National Library of Energy BETA

Sample records for fiber boxes cl

  1. Box Integrals

    E-Print Network [OSTI]

    Bailey, David H.; Borwein, Jonathan M.; Crandall, Richard E.

    2006-01-01

    Box integrals D.H. Bailey ? J.M. Borwein † April 3,Abstract. By a “box integral” we mean here an expectation |r· dr n . The study of box integrals leads one naturally into

  2. Sampling box

    DOE Patents [OSTI]

    Phillips, Terrance D. (617 Chestnut Ct., Aiken, SC 29803); Johnson, Craig (100 Midland Rd., Oak Ridge, TN 37831-0895)

    2000-01-01

    An air sampling box that uses a slidable filter tray and a removable filter cartridge to allow for the easy replacement of a filter which catches radioactive particles is disclosed.

  3. Technology and the Box

    E-Print Network [OSTI]

    Maitland, Padma

    2013-01-01

    its explorations of technology in partnership with radicalPadma Maitland Technology and the Box The room is thedisciplines. The theme of “Technology and the Box” emerged

  4. SF6432-CL

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

    on the Sandia-controlled premises comply with all Control : SF 6432-CL Title: Standard Terms & Conditions for Commercial Leases Owner: Procurement Policy Department Release Date:...

  5. prisoners and boxes 1 The condemned prisoners and the boxes.

    E-Print Network [OSTI]

    Taylor, Peter

    prisoners and boxes 1 The condemned prisoners and the boxes. A group of 100 condemned prisoners it there is the name of one of the prisoners, such that each of the 100 names appears exactly once. However, the ordering of the names in the boxes is random. 1 2 3 99 100 Once inside the room, each prisoner is allowed

  6. Projection optics box

    DOE Patents [OSTI]

    Hale, Layton C. (Livermore, CA); Malsbury, Terry (Tracy, CA); Hudyma, Russell M. (San Ramon, CA); Parker, John M. (Tracy, CA)

    2000-01-01

    A projection optics box or assembly for use in an optical assembly, such as in an extreme ultraviolet lithography (EUVL) system using 10-14 nm soft x-ray photons. The projection optics box utilizes a plurality of highly reflective optics or mirrors, each mounted on a precision actuator, and which reflects an optical image, such as from a mask, in the EUVL system onto a point of use, such as a target or silicon wafer, the mask, for example, receiving an optical signal from a source assembly, such as a developed from laser system, via a series of highly reflective mirrors of the EUVL system. The plurality of highly reflective optics or mirrors are mounted in a housing assembly comprised of a series of bulkheads having wall members secured together to form a unit construction of maximum rigidity. Due to the precision actuators, the mirrors must be positioned precisely and remotely in tip, tilt, and piston (three degrees of freedom), while also providing exact constraint.

  7. Impedance Measurement Box

    ScienceCinema (OSTI)

    Christophersen, Jon

    2013-05-28

    Energy storage devices, primarily batteries, are now more important to consumers, industries and the military. With increasing technical complexity and higher user expectations, there is also a demand for highly accurate state-of-health battery assessment techniques. IMB incorporates patented, proprietary, and tested capabilities using control software and hardware that can be part of an embedded monitoring system. IMB directly measures the wideband impedance spectrum in seconds during battery operation with no significant impact on service life. It also can be applied to batteries prior to installation, confirming health before entering active service, as well as during regular maintenance. For more information about this project, visit http://www.inl.gov/rd100/2011/impedance-measurement-box/

  8. Three fermions in a box

    E-Print Network [OSTI]

    Thomas Luu

    2008-10-13

    I calculate finite-volume effects for three identical spin-1/2 fermions in a box assuming short-ranged repulsive interactions of `natural size'. This analysis employs standard perturbation theory in powers of 1/L, where L^3 is the volume of the box. I give results for the ground states in the A_1, T_1, and E cubic representations.

  9. 2007 Formula SAE pedal box

    E-Print Network [OSTI]

    Schiller, Brad W

    2007-01-01

    The purpose of this thesis is the design and implementation of the pedal box for the 2007 MIT Formula SAE car. Formula SAE is a collegiate competition in which groups of degree seeking students design and manufacture small ...

  10. Physics: the big black box Mirror conjecture

    E-Print Network [OSTI]

    Cavalieri, Renzo

    Physics: the big black box Math Mirror conjecture A look into the mirror (I) an overview of Mirror Symmetry #12;Physics: the big black box Math Mirror conjecture Outline 1 Physics: the big black box 2 Math Symmetry #12;Physics: the big black box Math Mirror conjecture A slogan Mirror Symmetry is a correspondence

  11. Fast exact linear algebra, LinBox

    E-Print Network [OSTI]

    Pernet, Clément

    Fast exact linear algebra, LinBox Clément Pernet Introduction LinBox: an overview Principles-place eliminations Fast matrix multiplication Linear algebra over big integers Fast exact linear algebra: LinBox Clément PERNET SAGE Days 6, November 11, 2007 #12;Fast exact linear algebra, LinBox Clément Pernet

  12. Perspectives for the LinBox library

    E-Print Network [OSTI]

    Pernet, Clément

    Parallel Perspectives for the LinBox library Clément PERNET Introduction The LinBox library Principles Organisation of the library Dense computations BlackBox computations Parallelism perspectives Design considerations Algorithmic perspectives Conclusion Parallel Perspectives for the LinBox library

  13. Optimization Control Strategies for HVAC Terminal Boxes 

    E-Print Network [OSTI]

    Zhu, Y.; Batten, T.; Noboa, H.; Claridge, D. E.; Turner, W. D.; Liu, M.; Zhou, J.; Cameron, C.; Keeble, D.; Hirchak, R.

    2000-01-01

    was limited for some boxes due to the existing box design setting. In some cases, the boxes can only supply a certain amount of hot air even in the full heating mode even though the hot duct of the boxes can allow more air flow through. Instead, the boxes..., > CFMb(due to hot duct inlet size limit) Figure 3- 1. The new VAV box operation control schedule when minimum CFM requirements exceed hot duct capacity -Heating Load Cooling Load - If CFMmi, = CFM h,, Figure 3-2 The new VAV box operation control...

  14. Carbon Fiber

    SciTech Connect (OSTI)

    McGetrick, Lee

    2014-04-17

    Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

  15. Carbon Fiber

    ScienceCinema (OSTI)

    McGetrick, Lee

    2014-07-23

    Lee McGetrick leads ORNL's effort to produce light, durable carbon fiber at lower cost -- a key to improvements in manufacturing that will produce more fuel-efficient vehicles and other advances.

  16. Fiber Optics

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

    said Todd Eckman, vice president of Information Management for MSA. "This new fiber optics will benefit DOE, Benton PUD and NoaNet (Northwest Open Access Network) users. This,...

  17. NETL's JIC in a box

    ScienceCinema (OSTI)

    David Anna

    2010-01-08

    The National Energy Technology Laboratory developed the idea of a portable joint information center AKA JIC in-a-box. This video discribes some of the equipment in the portable JIC as well as some of the methodology that NETL developed as a result of this portable JIC concept.

  18. Foundation Accounting PO Box 3062739

    E-Print Network [OSTI]

    McQuade, D. Tyler

    Foundation Accounting PO Box 3062739 Tallahassee, FL 32306-2739 PH: (850) 644-6000 Revised 1 required): Date: Foundation Approval(s): Date: FOUNDATION ACCOUNTING USE ONLY Check Invoice Invoice Date Account Code Fund Project Amount Requisition Total Review Disb Supr. Signature Approvals for Payment

  19. Performance of miniaturized optical fiber interconnects between sensor-embedded composite panels

    E-Print Network [OSTI]

    Miller, Ethan L.

    the performance of low-profile multi-fiber connectors between sensor- embedded composite panels and Sensor Technologies P.O. Box 11704 Blacksburg, VA 24061-1704, (703) 231-4224 ABSTRACT This paper reports to locally weaken the material and to expose the fiber sensor channel to the external environment. We report

  20. Glove box for water pit applications

    DOE Patents [OSTI]

    Mills, William C. (Richland, WA); Rabe, Richard A. (North Fork, ID)

    2005-01-18

    A glove box assembly that includes a glove box enclosure attached to a longitudinally extending hollow tube having an entranceway, wherein the portion of the tube is in a liquid environment. An elevator member is provided for raising an object that is introduced into the hollow tube from the liquid environment to a gas environment inside the glove box enclosure while maintaining total containment.

  1. Illumination box and camera system

    DOE Patents [OSTI]

    Haas, Jeffrey S. (San Ramon, CA); Kelly, Fredrick R. (Modesto, CA); Bushman, John F. (Oakley, CA); Wiefel, Michael H. (La Honda, CA); Jensen, Wayne A. (Livermore, CA); Klunder, Gregory L. (Oakland, CA)

    2002-01-01

    A hand portable, field-deployable thin-layer chromatography (TLC) unit and a hand portable, battery-operated unit for development, illumination, and data acquisition of the TLC plates contain many miniaturized features that permit a large number of samples to be processed efficiently. The TLC unit includes a solvent tank, a holder for TLC plates, and a variety of tool chambers for storing TLC plates, solvent, and pipettes. After processing in the TLC unit, a TLC plate is positioned in a collapsible illumination box, where the box and a CCD camera are optically aligned for optimal pixel resolution of the CCD images of the TLC plate. The TLC system includes an improved development chamber for chemical development of TLC plates that prevents solvent overflow.

  2. Carbon Fiber Consortium | Partnerships | ORNL

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

    Carbon Fiber Consortium SHARE Carbon Fiber Consortium Oak Ridge Carbon Fiber Composites Consortium The Oak Ridge Carbon Fiber Composites Consortium was established in 2011 to...

  3. Antiport Mechanism for Cl in ClC-ec1 from Normal-Mode Analysis

    E-Print Network [OSTI]

    Harilal, S. S.

    Antiport Mechanism for ClÀ /Hþ in ClC-ec1 from Normal-Mode Analysis Gennady V. Miloshevsky, Ahmed. It functions as a ClÀ /Hþ anti- porter, not a ClÀ channel; however, the molecular mechanism for ClÀ /Hþ exchange is largely unknown. Using all-atom normal-mode analysis to explore possible mechanisms

  4. Polyethylene fiber drawing optimization

    E-Print Network [OSTI]

    Chiloyan, Vazrik

    2011-01-01

    Polymer fiber drawing creates fibers with enhanced thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve ...

  5. Fiber Lasers

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find whatGasEnergyfeature photoTheory ChalkboardFiber Lasers NIF

  6. Solving a transport equation with OpenCL Solving the shock tube problem with OpenCL

    E-Print Network [OSTI]

    Helluy, Philippe

    OpenCL Solving a transport equation with OpenCL Solving the shock tube problem with Open Introduction à OpenCL #12;OpenCL Solving a transport equation with OpenCL Solving the shock tube problem with OpenCL Sommaire 1 OpenCL 2 Solving a transport equation with OpenCL 3 Solving the shock tube problem

  7. Hydrotropic salt promotes anionic surfactant self-assembly into vesicles and ultralong fibers

    E-Print Network [OSTI]

    Huang, Jianbin

    Hydrotropic salt promotes anionic surfactant self-assembly into vesicles and ultralong fibers November 2011 Available online 6 December 2011 Keywords: Surfactant self-assembly Hydrotropic salt Fiber dodecylbenzene sulfo- nate, SDBS) and a hydrotropic salt (benzylamine hydrochloride, BzCl) in aqueous solution

  8. Workers Remove Glove Boxes from Ventilation at Hanford's Plutonium...

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

    boxes inside the facility's former processing area. This work is performed inside plastic enclosures to limit the spread of contamination. Preparing the glove boxes for...

  9. Palladium Nanoparticles by Electrospinning from Poly(acrylonitrile-co-acrylic acid)-PdCl2 Solutions. Relations between

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    Palladium Nanoparticles by Electrospinning from Poly(acrylonitrile-co-acrylic acid)-PdCl2 Solutions agglomeration can be elimi- nated. Electrospinning is a fiber fabrication technique that produces continuous, and membrane technology. The present work combines two methods of electrospinning and reduction of metal salts

  10. Solar Pizza Oven Box k - 6

    Office of Environmental Management (EM)

    Ready to Build? BUILD A PIZZA BOX SOLAR OVEN Background The sun is hot enough to bake food. Here's how to make a simple solar oven that gets hot enough to warm up cookies and other...

  11. Glove box on vehicular instrument panel

    DOE Patents [OSTI]

    Atarashi, Kazuya (Saitama, JP)

    1985-01-01

    A glove box for the upper surface of an automobile dashboard whereby it may be positioned close to the driver. The glove box lid is pivotally supported by arms extending down either side to swing forwardly for opening. A hook is pivotally support adjacent an arm and weighted to swing into engagement with the arm to prevent opening of the lid during abrupt deceleration. A toggle spring assists in maintaining the lid in either the open or closed position.

  12. Ceramic fiber reinforced filter

    DOE Patents [OSTI]

    Stinton, David P. (Knoxville, TN); McLaughlin, Jerry C. (Oak Ridge, TN); Lowden, Richard A. (Powell, TN)

    1991-01-01

    A filter for removing particulate matter from high temperature flowing fluids, and in particular gases, that is reinforced with ceramic fibers. The filter has a ceramic base fiber material in the form of a fabric, felt, paper of the like, with the refractory fibers thereof coated with a thin layer of a protective and bonding refractory applied by chemical vapor deposition techniques. This coating causes each fiber to be physically joined to adjoining fibers so as to prevent movement of the fibers during use and to increase the strength and toughness of the composite filter. Further, the coating can be selected to minimize any reactions between the constituents of the fluids and the fibers. A description is given of the formation of a composite filter using a felt preform of commercial silicon carbide fibers together with the coating of these fibers with pure silicon carbide. Filter efficiency approaching 100% has been demonstrated with these filters. The fiber base material is alternately made from aluminosilicate fibers, zirconia fibers and alumina fibers. Coating with Al.sub.2 O.sub.3 is also described. Advanced configurations for the composite filter are suggested.

  13. HYDROGEN AND VOC RETENTION IN WASTE BOXES

    SciTech Connect (OSTI)

    PACE ME; MARUSICH RM

    2008-11-21

    The Hanford Waste Management Project Master Documented Safety Analysis (MDSA) (HNF-14741, 2003) identifies derived safety controls to prevent or mitigate the risks of a single-container deflagration during operations requiring moving, venting or opening transuranic (TRU)-waste containers. The issue is whether these safety controls are necessary for operations involving TRU-waste boxes that are being retrieved from burial at the Hanford Site. This paper investigates the potential for a deflagration hazard within these boxes and whether safety controls identified for drum deflagration hazards should be applied to operations involving these boxes. The study evaluates the accumulation of hydrogen and VOCs within the waste box and the transport of these gases and vapors out of the waste box. To perform the analysis, there were numerous and major assumptions made regarding the generation rate and the transport pathway dimensions and their number. Since there is little actual data with regards to these assumptions, analyses of three potential configurations were performed to obtain some indication of the bounds of the issue (the concentration of hydrogen or flammable VOCs within a waste box). A brief description of each of the three cases along with the results of the analysis is summarized.

  14. Multimaterial fiber electronics

    E-Print Network [OSTI]

    Lestoquoy, Guillaume

    2014-01-01

    As the number of materials that are thermally-drawable into fibers is rapidly expending, numerous new multimaterial fiber architectures can be envisioned and fabricated. High-melting temperature metals, compound materials, ...

  15. Omnidirectional fiber optic tiltmeter

    DOE Patents [OSTI]

    Benjamin, B.C.; Miller, H.M.

    1983-06-30

    A tiltmeter is provided which is useful in detecting very small movements such as earth tides. The device comprises a single optical fiber, and an associated weight affixed thereto, suspended from a support to form a pendulum. A light source, e.g., a light emitting diode, mounted on the support transmits light through the optical fiber to a group of further optical fibers located adjacent to but spaced from the free end of the single optical fiber so that displacement of the single optical fiber with respect to the group will result in a change in the amount of light received by the individual optical fibers of the group. Photodetectors individually connectd to the fibers produce corresponding electrical outputs which are differentially compared and processed to produce a resultant continuous analog output representative of the amount and direction of displacement of the single optical fiber.

  16. Fiber draw synthesis

    E-Print Network [OSTI]

    Orf, Nicholas D.

    The synthesis of a high-melting temperature semiconductor in a low-temperature fiber drawing process is demonstrated, substantially expanding the set of materials that can be incorporated into fibers. Reagents in the solid ...

  17. Carbon Fiber Technology Facility

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

    precursors Textile polyacrylonitrile (PAN) aka acrylic fiber. Polyolefin Lignin Develop processing methodologies to convert low-cost precursors to usable...

  18. Helical Fiber Amplifier

    DOE Patents [OSTI]

    Koplow, Jeffrey P. (Washington, DC); Kliner, Dahy (San Ramon, CA); Goldberg, Lew (Fairfax, VA)

    2002-12-17

    A multi-mode gain fiber is provided which affords substantial improvements in the maximum pulse energy, peak power handling capabilities, average output power, and/or pumping efficiency of fiber amplifier and laser sources while maintaining good beam quality (comparable to that of a conventional single-mode fiber source). These benefits are realized by coiling the multimode gain fiber to induce significant bend loss for all but the lowest-order mode(s).

  19. Hybrid matrix fiber composites

    DOE Patents [OSTI]

    Deteresa, Steven J.; Lyon, Richard E.; Groves, Scott E.

    2003-07-15

    Hybrid matrix fiber composites having enhanced compressive performance as well as enhanced stiffness, toughness and durability suitable for compression-critical applications. The methods for producing the fiber composites using matrix hybridization. The hybrid matrix fiber composites include two chemically or physically bonded matrix materials, whereas the first matrix materials are used to impregnate multi-filament fibers formed into ribbons and the second matrix material is placed around and between the fiber ribbons that are impregnated with the first matrix material and both matrix materials are cured and solidified.

  20. Fiber optic laser rod

    DOE Patents [OSTI]

    Erickson, G.F.

    1988-04-13

    A laser rod is formed from a plurality of optical fibers, each forming an individual laser. Synchronization of the individual fiber lasers is obtained by evanescent wave coupling between adjacent optical fiber cores. The fiber cores are dye-doped and spaced at a distance appropriate for evanescent wave coupling at the wavelength of the selected dye. An interstitial material having an index of refraction lower than that of the fiber core provides the optical isolation for effective lasing action while maintaining the cores at the appropriate coupling distance. 2 figs.

  1. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, Joseph B. (Harriman, TN); Muhs, Jeffrey D. (Lenoir City, TN); Tobin, Kenneth W. (Harriman, TN)

    1995-01-01

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity.

  2. Fiber optic vibration sensor

    DOE Patents [OSTI]

    Dooley, J.B.; Muhs, J.D.; Tobin, K.W.

    1995-01-10

    A fiber optic vibration sensor utilizes two single mode optical fibers supported by a housing with one optical fiber fixedly secured to the housing and providing a reference signal and the other optical fiber having a free span length subject to vibrational displacement thereof with respect to the housing and the first optical fiber for providing a signal indicative of a measurement of any perturbation of the sensor. Damping or tailoring of the sensor to be responsive to selected levels of perturbation is provided by altering the diameter of optical fibers or by immersing at least a portion of the free span length of the vibration sensing optical fiber into a liquid of a selected viscosity. 2 figures.

  3. Fiber optic moisture sensor

    DOE Patents [OSTI]

    Kirkham, R.R.

    1984-08-03

    A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

  4. Promotion of solar box cooker technology

    SciTech Connect (OSTI)

    Stibravy, R.

    1992-09-01

    Over 1.5 billion people are affected by fuel wood shortage, according to the UN Food and Agricultural Organization. Meanwhile solar cookers are under-exploited. The author presents one version of this technology and discusses how it may be promoted world-wide. The increased use of non fossil fuel energy is essential world-wide in combating global warming trends, preserving the environment, conserving resources and achieving sustainable development. The Solar Box Cooker (SBC) - a box within a box - uses an easily available source of such energy that is also renewable (in contrast to energy that, once used, is not, such as oil, coal, gas, wood). It is also readily available for the developing world, and for much of the developed world too.

  5. Optical Fibers Optics and Photonics

    E-Print Network [OSTI]

    Palffy-Muhoray, Peter

    Optical Fibers Optics and Photonics Dr. Palffy-Muhoray Ines Busuladzic Department of Theoretical and Applied Mathematics The University of Akron April 21, 2008 #12;Outline · History of optical fibers · What are optical fibers? · How are optical fibers made? · Light propagation through optical fibers · Application

  6. Nondestructive assay of boxed radioactive waste

    SciTech Connect (OSTI)

    Gilles, W.P.; Roberts, R.J.; Jasen, W.G.

    1992-12-01

    This paper describes the problems related to the nondestructive assay (NDA) of boxed radioactive waste at the Hanford Site and how Westinghouse Hanford company (WHC) is solving the problems. The waste form and radionuclide content are described. The characteristics of the combined neutron and gamma-based measurement system are described.

  7. Safety evaluation for packaging CPC metal boxes

    SciTech Connect (OSTI)

    Romano, T.

    1995-05-15

    This Safety Evaluation for Packaging (SEP) provides authorization for the use of Container Products Corporation (CPC) metal boxes, as described in this document, for the interarea shipment of radioactive contaminated equipment and debris for storage in the Central Waste Complex (CWC) or T Plant located in the 200 West Area. Authorization is granted until November 30, 1995. The CPC boxes included in this SEP were originally procured as US Department of Transportation (DOT) Specification 7A Type A boxes. A review of the documentation provided by the manufacturer revealed the documentation did not adequately demonstrate compliance to the 4 ft drop test requirement of 49 CFR 173.465(c). Preparation of a SEP is necessary to document the equivalent safety of the onsite shipment in lieu of meeting DOT packaging requirements until adequate documentation is received. The equivalent safety of the shipment is based on the fact that the radioactive contents consist of contaminated equipment and debris which are not dispersible. Each piece is wrapped in two layers of no less than 4 mil plastic prior to being placed in the box which has an additional 10 mil liner. Pointed objects and sharp edges are padded to prevent puncture of the plastic liner and wrapping.

  8. Fiber composite flywheel rim

    DOE Patents [OSTI]

    Davis, D.E.; Ingham, K.T.

    1987-04-28

    A flywheel comprising a hub having at least one radially projecting disc, an annular rim secured to said disc and providing a surface circumferential to said hub, a first plurality of resin-impregnated fibers wound about said rim congruent to said surface, and a shell enclosing said first plurality of fibers and formed by a second plurality of resin-impregnated fibers wound about said rim tangentially to said surface. 2 figs.

  9. Product realization of the 2.007 control box

    E-Print Network [OSTI]

    Lin, Wey-Jiun

    2006-01-01

    A second generation control box using frequency hopping spread spectrum radio was designed and built for use in the Spring 2006 offering of 2.007 Design and Manufacturing I. A third generation control box that could hold ...

  10. White-Box Security Notions for Symmetric Encryption Schemes

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    in the last decade. Several white-box implementations of standard block-ciphers (DES, AES) have been proposed of a cryptosystem, cryptographers consider attack sce- narios where an adversary is only given a black-box access

  11. Fiber optic compass development 

    E-Print Network [OSTI]

    Park, Kyongtae

    2005-11-01

    magnetometer based on this principle, a single mode optical fiber coated with nickel [6] 3 or wrapped around a Metglas cylinder [7] experiences a strain which is dependent on the external magnetic field [8-10]. The fiber is deployed in one arm of a Michelson...

  12. Super capacitor with fibers

    DOE Patents [OSTI]

    Farmer, Joseph Collin; Kaschmitter, James

    2015-02-17

    An electrical cell apparatus includes a first current collector made of a multiplicity of fibers, a second current collector spaced from the first current collector; and a separator disposed between the first current collector and the second current collector. The fibers are contained in a foam.

  13. Fiber optic hydrophone

    DOE Patents [OSTI]

    Kuzmenko, Paul J. (Livermore, CA); Davis, Donald T. (Livermore, CA)

    1994-01-01

    A miniature fiber optic hydrophone based on the principles of a Fabry-Perot interferometer. The hydrophone, in one embodiment, includes a body having a shaped flexible bladder at one end which defines a volume containing air or suitable gas, and including a membrane disposed adjacent a vent. An optic fiber extends into the body with one end terminating in spaced relation to the membrane. Acoustic waves in the water that impinge on the bladder cause the pressure of the volume therein to vary causing the membrane to deflect and modulate the reflectivity of the Fabry-Perot cavity formed by the membrane surface and the cleaved end of the optical fiber disposed adjacent to the membrane. When the light is transmitted down the optical fiber, the reflected signal is amplitude modulated by the incident acoustic wave. Another embodiment utilizes a fluid filled volume within which the fiber optic extends.

  14. Fiber optic hydrophone

    DOE Patents [OSTI]

    Kuzmenko, P.J.; Davis, D.T.

    1994-05-10

    A miniature fiber optic hydrophone based on the principles of a Fabry-Perot interferometer is disclosed. The hydrophone, in one embodiment, includes a body having a shaped flexible bladder at one end which defines a volume containing air or suitable gas, and including a membrane disposed adjacent a vent. An optical fiber extends into the body with one end terminating in spaced relation to the membrane. Acoustic waves in the water that impinge on the bladder cause the pressure of the volume therein to vary causing the membrane to deflect and modulate the reflectivity of the Fabry-Perot cavity formed by the membrane surface and the cleaved end of the optical fiber disposed adjacent to the membrane. When the light is transmitted down the optical fiber, the reflected signal is amplitude modulated by the incident acoustic wave. Another embodiment utilizes a fluid filled volume within which the fiber optic extends. 2 figures.

  15. Neil S. Banas JISAO, Box 355672

    E-Print Network [OSTI]

    MacCready, Parker

    , Davis KA, Giddings SN, Hickey BM, MacCready P, Connolly TP, Geier S (2015) Seasonal and interannual010254. #12;Neil S. Banas ­ 2 Davis KA, Banas NS, Giddings SN, Siedlecki S, MacCready P, Hickey BM CL, Masura JE, Moore SK, Bill BD, Hay LR, Banas NS, Salathé EP, Mantua NJ, Anderson DM, Trainer VL

  16. Fiber optic hydrogen sensor

    DOE Patents [OSTI]

    Buchanan, B.R.; Prather, W.S.

    1991-01-01

    Apparatus and method for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading, by a single spectrophotometer.

  17. BIBLIOGRAPHY Abernethy, C.L. 2001. Financing River Basin Organizations. In Abernethy, C.L. (Ed.)

    E-Print Network [OSTI]

    Wolf, Aaron

    317 BIBLIOGRAPHY Abernethy, C.L. 2001. Financing River Basin Organizations. In Abernethy, C.L. (Ed.) Intersectoral Management of River Basins. Colombo: International Water Management Institute (IWMI). Africa. 1984: A New Approach to Water Management in the 21st Century. Paris: Réalisation les éditions Textuel

  18. Fiber bundle phase conjugate mirror

    DOE Patents [OSTI]

    Ward, Benjamin G.

    2012-05-01

    An improved method and apparatus for passively conjugating the phases of a distorted wavefronts resulting from optical phase mismatch between elements of a fiber laser array are disclosed. A method for passively conjugating a distorted wavefront comprises the steps of: multiplexing a plurality of probe fibers and a bundle pump fiber in a fiber bundle array; passing the multiplexed output from the fiber bundle array through a collimating lens and into one portion of a non-linear medium; passing the output from a pump collection fiber through a focusing lens and into another portion of the non-linear medium so that the output from the pump collection fiber mixes with the multiplexed output from the fiber bundle; adjusting one or more degrees of freedom of one or more of the fiber bundle array, the collimating lens, the focusing lens, the non-linear medium, or the pump collection fiber to produce a standing wave in the non-linear medium.

  19. Fiber alignment apparatus and method

    DOE Patents [OSTI]

    Kravitz, Stanley H. (Placitas, NM); Warren, Mial Evans (Albuquerque, NM); Snipes, Jr., Morris Burton (Albuquerque, NM); Armendariz, Marcelino Guadalupe (Albuquerque, NM); Word, V., James Cole (Albuqueruqe, NM)

    1997-01-01

    A fiber alignment apparatus includes a micro-machined nickel spring that captures and locks arrays of single mode fibers into position. The design consists of a movable nickel leaf shaped spring and a fixed pocket where fibers are held. The fiber is slid between the spring and a fixed block, which tensions the spring. When the fiber reaches the pocket, it automatically falls into the pocket and is held by the pressure of the leaf spring.

  20. Fiber alignment apparatus and method

    DOE Patents [OSTI]

    Kravitz, S.H.; Warren, M.E.; Snipes, M.B. Jr.; Armendariz, M.G.; Word, J.C. V

    1997-08-19

    A fiber alignment apparatus includes a micro-machined nickel spring that captures and locks arrays of single mode fibers into position. The design consists of a movable nickel leaf shaped spring and a fixed pocket where fibers are held. The fiber is slid between the spring and a fixed block, which tensions the spring. When the fiber reaches the pocket, it automatically falls into the pocket and is held by the pressure of the leaf spring. 8 figs.

  1. The PIC method PIC in OpenCL

    E-Print Network [OSTI]

    Helluy, Philippe

    The PIC method PIC in OpenCL Results La méthode PIC en OpenCL Anaïs Crestetto Journée GPU de Strasbourg 25 février 2010. Anaïs Crestetto La méthode PIC en OpenCL #12;The PIC method PIC in OpenCL Results Sommaire 1 The PIC method Presentation Algorithm 2 PIC in OpenCL How to parallelize ? computing Atomic

  2. Introgression & mapping Fiber cell

    E-Print Network [OSTI]

    Germplasm Introgression Genomics & mapping Fiber cell initiation Radiation hybrid (RH) mapping and breeding. Research activities commonly include plant breeding, genetics, genomics, cytogenetics, molecular methods. (C, S) · Contribute uniquely to genomics and its relevance to genetic improvement (C,S) · Harness

  3. Optoelectronic fiber interface design

    E-Print Network [OSTI]

    Spencer, Matthew Edmund

    2008-01-01

    Recent developments in materials science have led to the development of an exciting, new class of fibers which integrate metals, semiconductors and insulators in the same codrawing process. Various electrical devices have ...

  4. Multimaterial rectifying device fibers

    E-Print Network [OSTI]

    Orf, Nicholas D

    2009-01-01

    Electronic and optoelectronic device processing is commonly thought to be incompatible with much simpler thermal drawing techniques used in optical fiber production. The incorporation of metals, polymer insulators, and ...

  5. Dark Soliton Fiber Laser

    E-Print Network [OSTI]

    H. Zhang; D. Y. Tang; L. M. Zhao; X. Wu; Q. L. Bao; K. P. Loh

    2009-05-08

    We report on the experimental observation of stable dark solitons in an all normal dispersion fiber laser. We found experimentally that dark soliton formation is a generic feature of the fiber laser under strong continuous wave (CW) emission. However, only under appropriate pump strength and negative cavity feedback, stable single or multiple dark soliton could be achieved. Furthermore, we show that the features of the observed dark solitons could be well understood based on the nonlinear Schrodinger equation (NLSE).

  6. Hadronic ?Z box corrections in Møller scattering

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

    Hall, Nathan L.; Blunden, Peter G.; Melnitchouk, Wally; Thomas, Anthony W.; Young, Ross D.

    2014-04-01

    The possibility of measuring the parity-violating asymmetry in Moller scattering with sufficient accuracy to determine sin2?W to 0.1% offers a complementary path to the discovery of new physics to that followed at high energy colliders. We present a new calculation of the ?Z box contribution to parity-violating electron-proton scattering, which constitutes an important uncertainty in computing the background to this process. We show that while the ?Z correction grows rapidly with energy, it can be relatively well constrained by data from parity-violating inelastic scattering and parton distribution functions.

  7. Unlocking the Mysteries of the Bounding Box 

    E-Print Network [OSTI]

    Caldwell, Douglas R.

    2005-08-29

    ,50). This bounding box has a width of 360 degrees, rather than 20 degrees, exaggerating by eighteen times the width of the Boxtopia. The Global Gotchas can be clearly seen in Figure 3, where Russia, the United States, Kiribati, Fiji, New Zealand... Bounding Rectangle," MiMi.hu, http://en.mimi.hu/gis/ Page 18 minimum_bounding_rectangle.html 2. Open GIS Consortium, Inc., OpenGIS? Geography Markup Language (GML) Implementation Specification, OGC 02-023r4, Version 3.0, January 29, 2003. https://portal...

  8. Harmonic oscillator in a one-dimensional box

    E-Print Network [OSTI]

    Paolo Amore; Francisco M. Fernandez

    2009-07-31

    We study a harmonic molecule confined to a one--dimensional box with impenetrable walls. We explicitly consider the symmetry of the problem for the cases of different and equal masses. We propose suitable variational functions and compare the approximate energies given by the variation method and perturbation theory with accurate numerical ones for a wide range of values of the box length. We analyze the limits of small and large box size.

  9. Optical fiber switch

    DOE Patents [OSTI]

    Early, James W. (Los Alamos, NM); Lester, Charles S. (San Juan Pueblo, NM)

    2002-01-01

    Optical fiber switches operated by electrical activation of at least one laser light modulator through which laser light is directed into at least one polarizer are used for the sequential transport of laser light from a single laser into a plurality of optical fibers. In one embodiment of the invention, laser light from a single excitation laser is sequentially transported to a plurality of optical fibers which in turn transport the laser light to separate individual remotely located laser fuel ignitors. The invention can be operated electro-optically with no need for any mechanical or moving parts, or, alternatively, can be operated electro-mechanically. The invention can be used to switch either pulsed or continuous wave laser light.

  10. Development and Commercialization of Alternative Carbon Fiber...

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

    Alternative Carbon Fiber Precursors and Conversion Technologies - Advanced Conversion Development and Commercialization of Alternative Carbon Fiber Precursors and Conversion...

  11. Distributed optical fiber vibration sensing 

    E-Print Network [OSTI]

    Yu, Hui

    2001-01-01

    This thesis presents a distributed optical fiber vibration sensor. The purpose of this sensing system is to monitor, in real time, the status of railcars by burying an optical fiber underground beside the rails. Using a coherent homodyne technique...

  12. Genetics of Cotton Fiber Elongation 

    E-Print Network [OSTI]

    Ng, Eng Hwa

    2013-05-29

    for growers to produce high elongation cotton; lack of research interests among breeders; and absence of a reliable fiber testing system for elongation. This study was conducted to determine the genetics of cotton fiber elongation via a diallel and generation...

  13. Automated fiber pigtailing machine

    DOE Patents [OSTI]

    Strand, O.T.; Lowry, M.E.

    1999-01-05

    The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectronic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems. 26 figs.

  14. Automated fiber pigtailing machine

    DOE Patents [OSTI]

    Strand, Oliver T. (Castro Valley, CA); Lowry, Mark E. (Castro Valley, CA)

    1999-01-01

    The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectonic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems.

  15. Silicon fiber optic sensors

    DOE Patents [OSTI]

    Pocha, Michael D. (Livermore, CA); Swierkowski, Steve P. (Livermore, CA); Wood, Billy E. (Livermore, CA)

    2007-10-02

    A Fabry-Perot cavity is formed by a partially or wholly reflective surface on the free end of an integrated elongate channel or an integrated bounding wall of a chip of a wafer and a partially reflective surface on the end of the optical fiber. Such a constructed device can be utilized to detect one or more physical parameters, such as, for example, strain, through the optical fiber using an optical detection system to provide measuring accuracies of less than aboutb0.1%.

  16. Revisiting the BGE Attack on a White-Box AES Implementation

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    . White-box cryptography aims to protect the secret key of a cipher in an environment in which-box implementation of AES [5]. White-box cryptography aims to protect the confidentiality of the secret key device, or a set-top box. #12;In 2004, Billet et al. [3] presented an attack on the white-box AES

  17. HOCl and Cl2 observations in marine air

    E-Print Network [OSTI]

    2011-01-01

    phase reactions of Cl with ethane (C 2 H 6 ), methanol (CH 3Methanol Acetaldehyde Acetone Ethane Initial mixing ratios (

  18. BlindBox: Deep Packet Inspection over Encrypted Traffic

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    BlindBox: Deep Packet Inspection over Encrypted Traffic Justine Sherry UC Berkeley Chang Lan UC middleboxes perform deep packet inspection (DPI), a set of useful tasks which examine packet payloads that simultaneously provides both of these properties. The approach of Blind- Box is to perform the deep

  19. THE CLE-2000 TOOL-BOX Institut de genie nucleaire

    E-Print Network [OSTI]

    Meunier, Michel

    THE CLE-2000 TOOL-BOX Robert ROY Institut de g´enie nucl´eaire ´Ecole Polytechnique de Montr´eal e all over the world. Assuming a basic definition for the free-format procedure, an efficient CLE- 2000 codes, without recoding or defining new modules. The CLE-2000 tool-box is described in this report

  20. A solar box cooker for mass production in East Africa

    SciTech Connect (OSTI)

    Funk, P.A.; Wilcke, W.F.

    1992-12-31

    A solar box cooker produced in Tanzania, East Africa with indigenous materials is described. When compared to a commercially produced glass and cardboard one, it was found to perform as well. Heat transfer through each major component of the cooker is presented. The smallest losses were through the walls of the box. The greatest losses were observed in the cover system.

  1. LightBox -Exploring Interaction Modalities with Colored Light

    E-Print Network [OSTI]

    of light to very subtle animations, transitions and dimmed lighting effects. Implementation LightBox is housed in an aluminum suitcase measuring 48x38x25cm. The lid of the suitcase contains a panel of 12x12 Design. Figure 1. An animated lighting sequence visualized on the hi-power LEDs of LightBox #12

  2. Matrix Power S-Box Construction Eligijus Sakalauskasa

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Matrix Power S-Box Construction Eligijus Sakalauskasa and Kestutis Luksysb Department of Applied.Sakalauskas@ktu.lt b Kestutis.Luksys@ktu.lt Abstract The new symmetric cipher S-box construction based on matrix power function is presented. The matrix consisting of plain data bit strings is combined with three round key

  3. On Virtual Grey Box Obfuscation for General Circuits Nir Bitansky

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    § Omer Paneth¶ July 18, 2014 Abstract An obfuscator O is Virtual Grey Box (VGB) for a class C of circuits unbounded computational resources and polynomially many oracle queries to C. VGB obfuscation is often of interest VGB is equivalent to full-fledged Virtual Black Box obfuscation. We investigate the feasibility

  4. Large core fiber optic cleaver

    DOE Patents [OSTI]

    Halpin, J.M.

    1996-03-26

    The present invention relates to a device and method for cleaving optical fibers which yields cleaved optical fiber ends possessing high damage threshold surfaces. The device can be used to cleave optical fibers with core diameters greater than 400 {micro}m. 30 figs.

  5. OF CARBON FIBERS TURBINE BLADE

    E-Print Network [OSTI]

    THE USE IN WIND DESIGN: OF CARBON FIBERS TURBINE BLADE A SERI-8BLADE EXAMPLE Cheng Printed March 2000 The Use of Carbon Fibers in Wind Turbine Blade Design: a SERI-8 Blade Example Cheng represent different volumes of carbon fibers in the blade, were also studied for two design options

  6. Large core fiber optic cleaver

    DOE Patents [OSTI]

    Halpin, John M. (Livermore, CA)

    1996-01-01

    The present invention relates to a device and method for cleaving optical fibers which yields cleaved optical fiber ends possessing high damage threshold surfaces. The device can be used to cleave optical fibers with core diameters greater than 400 .mu.m.

  7. Aerogel-clad optical fiber

    SciTech Connect (OSTI)

    Sprehn, G.A.; Hrubesh, L.W.; Poco, J.F.; Sandler, P.H.

    1997-11-04

    An optical fiber is surrounded by an aerogel cladding. For a low density aerogel, the index of refraction of the aerogel is close to that of air, which provides a high numerical aperture to the optical fiber. Due to the high numerical aperture, the aerogel clad optical fiber has improved light collection efficiency. 4 figs.

  8. Drying of fiber webs

    DOE Patents [OSTI]

    Warren, D.W.

    1997-04-15

    A process and an apparatus are disclosed for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquefied eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciatively stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers. 6 figs.

  9. Drying of fiber webs

    DOE Patents [OSTI]

    Warren, David W. (9253 Glenoaks Blvd., Sun Valley, CA 91352)

    1997-01-01

    A process and an apparatus for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquified eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciately stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers.

  10. ARM - PI Product - Vaisala CL51 ceilometer

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska OutreachCalendar NSAProductsMergedProductsVaisala CL51 ceilometer

  11. OpenCL Tutorial on Dirac

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesseworkSURVEY UNIVERSEHowScientificOmbuds OfficeOneFasterdataOpenOpenCL

  12. Measure Guideline: Optimizing the Configuration of Flexible Duct Junction Boxes

    SciTech Connect (OSTI)

    Beach, R.; Burdick, A.

    2014-03-01

    This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance (Rutkowski, H. Manual D -- Residential Duct Systems, 3rd edition, Version 1.00. Arlington, VA: Air Conditioning Contractors of America, 2009.). IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may impact pressure losses within junction boxes among various design configurations (Beach, R., Prahl, D., and Lange, R. CFD Analysis of Flexible Duct Junction Box Design. Golden, CO: National Renewable Energy Laboratory, submitted for publication 2013). These recommendations can help to ensure that a system aligns more closely with the design and the occupants' comfort expectations. Specifically, the recommendations described herein show how to configure a rectangular box with four outlets, a triangular box with three outlets, metal wyes with two outlets, and multiple configurations for more than four outlets. Designers of HVAC systems, contractors who are fabricating junction boxes on site, and anyone using the ACCA Manual D process for sizing duct runs will find this measure guideline invaluable for more accurately minimizing pressure losses when using junction boxes with flexible ducts.

  13. Safeguards Approaches for Black Box Processes or Facilities

    SciTech Connect (OSTI)

    Diaz-Marcano, Helly; Gitau, Ernest TN; Hockert, John; Miller, Erin; Wylie, Joann

    2013-09-25

    The objective of this study is to determine whether a safeguards approach can be developed for “black box” processes or facilities. These are facilities where a State or operator may limit IAEA access to specific processes or portions of a facility; in other cases, the IAEA may be prohibited access to the entire facility. The determination of whether a black box process or facility is safeguardable is dependent upon the details of the process type, design, and layout; the specific limitations on inspector access; and the restrictions placed upon the design information that can be provided to the IAEA. This analysis identified the necessary conditions for safeguardability of black box processes and facilities.

  14. Fiber optic fluid detector

    DOE Patents [OSTI]

    Angel, S. Michael (Livermore, CA)

    1989-01-01

    Particular gases or liquids are detected with a fiber optic element (11, 11a to 11j) having a cladding or coating of a material (23, 23a to 23j) which absorbs the fluid or fluids and which exhibits a change of an optical property, such as index of refraction, light transmissiveness or fluoresence emission, for example, in response to absorption of the fluid. The fluid is sensed by directing light into the fiber optic element and detecting changes in the light, such as exit angle changes for example, that result from the changed optical property of the coating material. The fluid detector (24, 24a to 24j) may be used for such purposes as sensing toxic or explosive gases in the atmosphere, measuring ground water contamination or monitoring fluid flows in industrial processes, among other uses.

  15. Fiber optic fluid detector

    DOE Patents [OSTI]

    Angel, S.M.

    1987-02-27

    Particular gases or liquids are detected with a fiber optic element having a cladding or coating of a material which absorbs the fluid or fluids and which exhibits a change of an optical property, such as index of refraction, light transmissiveness or fluoresence emission, for example, in response to absorption of the fluid. The fluid is sensed by directing light into the fiber optic element and detecting changes in the light, such as exit angle changes for example, that result from the changed optical property of the coating material. The fluid detector may be used for such purposes as sensing toxic or explosive gases in the atmosphere, measuring ground water contamination or monitoring fluid flows in industrial processes, among other uses. 10 figs.

  16. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, Emil F. (Los Alamos, NM)

    1991-01-01

    A fiber optic geophysical sensor in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects.

  17. Carbon Fiber Technology Facility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels| Departmentof Energy CaliforniaContentsForumCarbon Fiber

  18. Titanha Alloy Wwfacturbi: L'ivinien Hatioml Lead Camparw Box...

    Office of Legacy Management (LM)

    Llcm No. c- 3u3 xmAtdr cktebor 24, lp55 Titanha Alloy Wwfacturbi: L'ivinien Hatioml Lead Camparw Box C, Widgr, Station Uagara F&lb, New York Attention; &. steprmn F, Ijrbw...

  19. Little Boxes: High Tech and the Silicon Valley

    E-Print Network [OSTI]

    Crawford, Margaret

    2013-01-01

    Immigrant Workers and the High-Tech Global Economy (Newin a clerical position at high-tech firms like Varian. TheCrawford Little Boxes High-Tech and the Silicon Valley The

  20. Lab Ahead of Schedule Processing Waste in Large Boxes

    Broader source: Energy.gov [DOE]

    LOS ALAMOS, N.M. – The TRU Waste Program at Los Alamos National Laboratory is currently two months ahead of schedule processing and repackaging waste stored in large fiberglass-reinforced boxes (FRPs).

  1. GREEN SUPERCOMPUTING IN A DESKTOP BOX

    SciTech Connect (OSTI)

    HSU, CHUNG-HSING; FENG, WU-CHUN; CHING, AVERY

    2007-01-17

    The computer workstation, introduced by Sun Microsystems in 1982, was the tool of choice for scientists and engineers as an interactive computing environment for the development of scientific codes. However, by the mid-1990s, the performance of workstations began to lag behind high-end commodity PCs. This, coupled with the disappearance of BSD-based operating systems in workstations and the emergence of Linux as an open-source operating system for PCs, arguably led to the demise of the workstation as we knew it. Around the same time, computational scientists started to leverage PCs running Linux to create a commodity-based (Beowulf) cluster that provided dedicated computer cycles, i.e., supercomputing for the rest of us, as a cost-effective alternative to large supercomputers, i.e., supercomputing for the few. However, as the cluster movement has matured, with respect to cluster hardware and open-source software, these clusters have become much more like their large-scale supercomputing brethren - a shared (and power-hungry) datacenter resource that must reside in a machine-cooled room in order to operate properly. Consequently, the above observations, when coupled with the ever-increasing performance gap between the PC and cluster supercomputer, provide the motivation for a 'green' desktop supercomputer - a turnkey solution that provides an interactive and parallel computing environment with the approximate form factor of a Sun SPARCstation 1 'pizza box' workstation. In this paper, they present the hardware and software architecture of such a solution as well as its prowess as a developmental platform for parallel codes. In short, imagine a 12-node personal desktop supercomputer that achieves 14 Gflops on Linpack but sips only 185 watts of power at load, resulting in a performance-power ratio that is over 300% better than their reference SMP platform.

  2. Fiber optic sensor and method for making

    DOE Patents [OSTI]

    Vartuli, James Scott; Bousman, Kenneth Sherwood; Deng, Kung-Li; McEvoy, Kevin Paul; Xia, Hua

    2010-05-18

    A fiber optic sensor including a fiber having a modified surface integral with the fiber wherein the modified surface includes an open pore network with optical agents dispersed within the open pores of the open pore network. Methods for preparing the fiber optic sensor are also provided. The fiber optic sensors can withstand high temperatures and harsh environments.

  3. Distribution and Origin of 36Cl In Allende CAIs

    SciTech Connect (OSTI)

    Matzel, J P; Jacobsen, B; Hutcheon, I D; Krot, A N; Nagashima, K; Yin, Q; Ramon, E C; Weber, P; Wasserburg, G J

    2009-12-11

    The abundance of short-lived radionuclides (SLRs) in early solar system materials provide key information about their nucleosynthetic origin and can constrain the timing of early solar system events. Excesses of {sup 36}S ({sup 36}S*) correlated with {sup 35}Cl/{sup 34}S ratios provide direct evidence for in situ decay of {sup 36}Cl ({tau}{sub 1/2} {approx} 0.3 Ma) and have been reported in sodalite (Na{sub 8}Al{sub 6}Si{sub 6}O{sub 24}Cl{sub 2}) and wadalite (Ca{sub 6}Al{sub 5}Si{sub 2}O{sub 16}Cl{sub 3}) in CAIs and chondrules from the Allende and Ningqiang CV carbonaceous chondrites. While previous studies demonstrate unequivocally that {sup 36}Cl was extant in the early solar system, no consensus on the origin or initial abundance of {sup 36}Cl has emerged. Understanding the origin of {sup 36}Cl, as well as the reported variation in the initial {sup 36}Cl/{sup 35}Cl ratio, requires addressing when, where and how chlorine was incorporated into CAIs and chondrules. These factors are key to distinguishing between stellar nucleosynthesis or energetic particle irradiation for the origin of {sup 36}Cl. Wadalite is a chlorine-rich secondary mineral with structural and chemical affinities to grossular. The high chlorine ({approx}12 wt%) and very low sulfur content (<<0.01 wt%) make wadalite ideal for studies of the {sup 36}Cl-{sup 36}S system. Wadalite is present in Allende CAIs exclusively in the interior regions either in veins crosscutting melilite or in zones between melilite and anorthite associated with intergrowths of grossular, monticellite, and wollastonite. Wadalite and sodalite most likely resulted from open-system alteration of primary minerals with a chlorine-rich fluid phase. We recently reported large {sup 36}S* correlated with {sup 35}Cl/{sup 34}S in wadalite in Allende Type B CAI AJEF, yielding a ({sup 36}Cl/{sup 35}Cl){sub 0} ratio of (1.7 {+-} 0.3) x 10{sup -5}. This value is the highest reported {sup 36}Cl/{sup 35}Cl ratio and is {approx}5 times greater than values for sodalite in some CAIs and chondrules. We report here new {sup 36}Cl-{sup 36}S isotope measurements of wadalite in two Type B CAIs (TS34 and Egg-6) and sodalite in a fine-grained CAI (Pink Angel) from Allende.

  4. Infrared spectra of ClCN{sup +}, ClNC{sup +}, and BrCN{sup +} trapped in solid neon

    SciTech Connect (OSTI)

    Jacox, Marilyn E.; Thompson, Warren E. [Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8441 (United States)

    2007-06-28

    When a mixture of ClCN or BrCN with a large excess of neon is codeposited at 4.3 K with a beam of neon atoms that have been excited in a microwave discharge, the infrared spectrum of the resulting solid includes prominent absorptions of the uncharged isocyanide, ClNC or BrNC, and of the corresponding cation, ClCN{sup +} or BrCN{sup +}. The NC-stretching fundamentals of the isocyanides trapped in solid neon lie close to the positions for their previously reported argon-matrix counterparts. The CN-stretching absorptions of ClCN{sup +} and BrCN{sup +} and the CCl-stretching absorption of ClCN{sup +} appear very close to the gas-phase band centers. Absorptions of two overtones and one combination band of ClCN{sup +} are identified. Reversible photoisomerization of ClCN{sup +} to ClNC{sup +} occurs. The two stretching vibrational fundamentals and several infrared and near infrared absorptions associated with electronic transitions of ClNC{sup +} are observed. Minor infrared peaks are attributed to the vibrational fundamental absorptions of the CX and CX{sup +} species (X=Cl,Br)

  5. Preparation of silicon carbide fibers

    DOE Patents [OSTI]

    Wei, G.C.

    1983-10-12

    Silicon carbide fibers suitable for use in the fabrication of dense, high-strength, high-toughness SiC composites or as thermal insulating materials in oxidizing environments are fabricated by a new, simplified method wherein a mixture of short-length rayon fibers and colloidal silica is homogenized in a water slurry. Water is removed from the mixture by drying in air at 120/sup 0/C and the fibers are carbonized by (pyrolysis) heating the mixture to 800 to 1000/sup 0/C in argon. The mixture is subsequently reacted at 1550 to 1900/sup 0/C in argon to yield pure ..beta..-SiC fibers.

  6. Dr. StrangeBox or : how I learned to stop worrying and love urban big box retail

    E-Print Network [OSTI]

    Press, Jared Harding

    2013-01-01

    Over the past decade, Big Box retailers have been trying to tap into urban markets after years of explicitly avoiding them in favor of suburban environments. In the past few years, retailers have begun experimenting with ...

  7. Separation of CsCl from a Ternary CsCl-LiCl-KCl Salt via a Melt Crystallization Technique for Pyroprocessing Waste Minimization

    SciTech Connect (OSTI)

    Ammon Williams; Supathorn Phongikaroon; Michael Simpson

    2013-02-01

    A parametric study has been conducted to identify the effects of several parameters on the separation of CsCl from molten LiCl-KCl salt via a melt crystallization process. A reverse vertical Bridgman technique was used to grow the salt crystals. The investigated parameters were: (1) the advancement rate, (2) the crucible lid configuration, (3) the amount of salt mixture, (4) the initial composition of CsCl, and (5) the temperature difference between the high and low furnace zones. From each grown crystal, samples were taken axially and analyzed using inductively coupled plasma mass spectrometry (ICP-MS). Results show that CsCl concentrations at the top of the crystals were low and increased to a maximum at the bottom of the salt. Salt (LiCl-KCl) recycle percentages for the experiments ranged from 50% to 75% and the CsCl composition in the waste salt was low. To increase the recycle percentage and the concentration of CsCl in the waste form, the possibility of using multiple crystallization stages was explored to further optimize the process. Results show that multiple crystallization stages are practical and the optimal experimental conditions should be operated at 5.0 mm/hr rate with a lid configuration and temperature difference of 200 °C for a total of five crystallization stages. Under these conditions, up to 88% of the salt can be recycled.

  8. HOCl and Cl2 observations in marine air

    E-Print Network [OSTI]

    2011-01-01

    new comprehensive atmospheric chemistry module MECCA, Atmos.aerosols influence atmospheric chemistry? – a model study,3.0 License. Atmospheric Chemistry and Physics HOCl and Cl 2

  9. Carbon Fiber Cluster Strategy | ornl.gov

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

    Carbon Fiber Cluster Strategy SHARE Carbon Fiber Cluster Strategy ORNL has a 40-year history in R&D on fiber-reinforced composite materials, and has been leading DOE's low-cost...

  10. The Glass Box offers a unique environment to support research, development and evaluation of software

    E-Print Network [OSTI]

    The Glass Box offers a unique environment to support research, development and evaluation of software products used by workers performing real computer- based tasks. The Glass Box instrumentation and to retrieve, store, and share Glass Box data. · Test Bed environment­Glass Box serves as a test bed

  11. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, E.F.

    1991-03-19

    A fiber optic geophysical sensor is described in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects. 2 figures.

  12. Dark Fiber Testbed

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HAB Packet HanfordDOEDaniel Shechtman andDark Fiber Testbed Network

  13. Carbon Fiber Technology Facility | Department of Energy

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

    Carbon Fiber Technology Facility Carbon Fiber Technology Facility 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

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

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

    Natural Fiber Composites: Retting, Preform Manufacture & Molding Natural Fiber Composites: Retting, Preform Manufacture & Molding 2009 DOE Hydrogen Program and Vehicle Technologies...

  15. CFTF | Carbon Fiber Technology Facility | ORNL

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

    BTRIC CNMS CSMB CFTF Working with CFTF HFIR MDF NTRC OLCF SNS Carbon Fiber Technology Facility Home | User Facilities | CFTF CFTF | Carbon Fiber Technology Facility SHARE Oak...

  16. Pleated Ceramic Fiber Diesel Particulate Filter | Department...

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

    Pleated Ceramic Fiber Diesel Particulate Filter Pleated Ceramic Fiber Diesel Particulate Filter 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  17. Fiber Grating Environmental Sensing System

    DOE Patents [OSTI]

    Schulz, Whitten L. (Fairview, OR); Udd, Eric (Fairview, OR)

    2003-07-29

    Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.

  18. Potential curves and spectroscopic properties for the ground state of ClO and for the ground and various excited states of ClO

    E-Print Network [OSTI]

    Crawford, T. Daniel

    electron impact studies on ClO3F.13 The photodestruction spectra of ClO were observed by Lee et al. in 1979

  19. Aggregating CL-Signatures Revisited: Extended Functionality and Better Efficiency

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Aggregating CL-Signatures Revisited: Extended Functionality and Better Efficiency Kwangsu Lee Dong size, short aggregate signatures size, and efficient aggregate signing/verification. In this paper, we) whose security is reduced to that of CL signature which substantially improve efficiency conditions

  20. Cosmogenic 10 Cl geochronology of offset alluvial fans

    E-Print Network [OSTI]

    Frankel, Kurt L.

    Cosmogenic 10 Be and 36 Cl geochronology of offset alluvial fans along the northern Death Valley the first geochronologically determined slip rate for the NDVFZ. Our study focuses on the Red Wall Canyon Pleistocene. In situ terrestrial cosmogenic 10 Be and 36 Cl geochronology was used to date the Red Wall Canyon

  1. Integrated Box Interrogation System (IBIS) Preliminary Design Study

    SciTech Connect (OSTI)

    DR. Stephen Croft; Mr. David Martancik; Dr. Brian Young; Dr. Patrick MJ Chard; Dr. Robert J Estop; Sheila Melton; Gaetano J. Arnone

    2003-01-13

    Canberra Industries has won the tendered solicitation, INEEL/EST-99-00121 for boxed waste Nondestructive Assay Development and Demonstration. Canberra will provide the Integrated Box Interrogation System (IBIS) which is a suite of assay instrumentation and a data reduction system that addresses the measurement needs for Boxed Wastes identified in the solicitation and facilitates the associated experimental program and demonstration of system capability. The IBIS system will consist of the next generation CWAM system, i.e. CWAM II, which is a Scanning Passive/Active Neutron interrogation system which we will call a Box Segmented Neutron Scanner (BSNS), combined with a physically separate Box Segmented Gamma-ray Scanning (BSGS) system. These systems are based on existing hardware designs but will be tailored to the large sample size and enhanced to allow the program to evaluate the following measurement criteria:Characterization and correction for matrix heterogeneity Characterization of non-uniform radio-nuclide and isotopic compositions Assay of high density matrices (both high-Z and high moderator contents)Correction for radioactive material physical form - such as self shielding or multiplication effects due to large accumulations of radioactive materials.Calibration with a minimal set of reference standards and representative matrices.THis document summarizes the conceptual design parameters of the IBIS and indicates areas key to the success of the project where development is to be centered. The work presented here is a collaborative effort between scientific staff within Canberra and within the NIS-6 group at LANL.

  2. Methods of producing continuous boron carbide fibers

    DOE Patents [OSTI]

    Garnier, John E.; Griffith, George W.

    2015-12-01

    Methods of producing continuous boron carbide fibers. The method comprises reacting a continuous carbon fiber material and a boron oxide gas within a temperature range of from approximately 1400.degree. C. to approximately 2200.degree. C. Continuous boron carbide fibers, continuous fibers comprising boron carbide, and articles including at least a boron carbide coating are also disclosed.

  3. Ethanol extraction of phytosterols from corn fiber

    DOE Patents [OSTI]

    Abbas, Charles (Champaign, IL); Beery, Kyle E. (Decatur, IL); Binder, Thomas P. (Decatur, IL); Rammelsberg, Anne M. (Decatur, IL)

    2010-11-16

    The present invention provides a process for extracting sterols from a high solids, thermochemically hydrolyzed corn fiber using ethanol as the extractant. The process includes obtaining a corn fiber slurry having a moisture content from about 20 weight percent to about 50 weight percent solids (high solids content), thermochemically processing the corn fiber slurry having high solids content of 20 to 50% to produce a hydrolyzed corn fiber slurry, dewatering the hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, washing the residual corn fiber, dewatering the washed, hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, and extracting the residual corn fiber with ethanol and separating at least one sterol.

  4. Experimental determination of the elastic cotunneling rate in a hybrid single-electron box

    SciTech Connect (OSTI)

    Sun, Chia-Heng; Tai, Po-Chen; Chen, Yung-Fu, E-mail: yfuchen@ncu.edu.tw [Department of Physics, National Central University, Jhongli 32001, Taiwan (China); Jiang, Jheng-An; Wu, Cen-Shawn [Department of Physics, National Changhua University of Education, Changhua 500, Taiwan (China); Chen, Jeng-Chung [Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)

    2014-06-09

    We report measurements of charge configurations and charge transfer dynamics in a hybrid single-electron box composed of aluminum and copper. We used two single-electron transistors (SETs) to simultaneously read out different parts of the box, enabling us to map out stability diagrams of the box and identify various charge transfer processes in the box. We further characterized the elastic cotunneling in the box, which is an important source of error in electron turnstiles consisting of hybrid SETs, and found that the rate was as low as 1?Hz at degeneracy and compatible with theoretical estimates for electron tunneling via virtual states in the central superconducting island of the box.

  5. Fiber Laser Based Nonlinear Spectroscopy

    E-Print Network [OSTI]

    Adany, Peter

    2012-08-31

    To date, nonlinear spectroscopy has been considered an expensive technique and confined mostly to experimental laboratory settings. Over recent years, optical-fiber lasers that are highly reliable, simple to operate and relatively inexpensive have...

  6. Scintillator fiber optic long counter

    DOE Patents [OSTI]

    McCollum, Tom (Sterling, VA); Spector, Garry B. (Fairfax, VA)

    1994-01-01

    A flat response position sensitive neutron detector capable of providing neutron spectroscopic data utilizing scintillator fiber optic filaments embedded in a neutron moderating housing having an open end through which neutrons enter to be detected.

  7. High repetition rate fiber lasers

    E-Print Network [OSTI]

    Chen, Jian, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    This thesis reports work in high repetition rate femtosecond fiber lasers. Driven by the applications including optical arbitrary waveform generation, high speed optical sampling, frequency metrology, and timing and frequency ...

  8. Scintillator fiber optic long counter

    DOE Patents [OSTI]

    McCollum, T.; Spector, G.B.

    1994-03-29

    A flat response position sensitive neutron detector capable of providing neutron spectroscopic data utilizing scintillator fiber optic filaments embedded in a neutron moderating housing having an open end through which neutrons enter to be detected is described. 11 figures.

  9. Buried fiber optic intrusion sensor 

    E-Print Network [OSTI]

    Maier, Eric William

    2004-09-30

    piezoelectric transducer to produce a controllable optical phase shift at the 2 km point of a 12 km path length. Interrogation of the distributed sensor was accomplished by repetitively gating light pulses from the stable laser into the sensing fiber...

  10. Computer Science & Engineering Box 352350 Seattle, WA 98195-2350

    E-Print Network [OSTI]

    Borenstein, Elhanan

    Computer Science & Engineering #12;Box 352350 Seattle, WA 98195-2350 Nonprofit Org US Postage PAID in the Computer Science Department. He is a superb researcher in the design of interactive, visual data, Carnegie Mellon University's Finmeccanica Associate Professor in the School of Computer Science, is widely

  11. On Klee's Measure Problem for Grounded Boxes Hakan Yildiz

    E-Print Network [OSTI]

    Suri, Subhash

    is a standard step used in algorithms for the Klee's measure, but instead of solving the cross-section problem for computing Klee's measure for a set of n 2-grounded boxes. This is an improvement of roughly O( n) compared into one of maintaining its (d-1)-dimensional cross-section with a sweeping plane. The sweeping

  12. MATLAB package for solving Box-Constrained Integer Least

    E-Print Network [OSTI]

    Toronto, University of

    BILS: MATLAB package for solving Box-Constrained Integer Least Squares Problems User's Guide Xiao. This MATLAB package provides the solution to the BILS problem. The purpose of this document is to show how to use this package. For the theory and al- gorithms implemented in this package, see the paper "Solving

  13. Modeling of RTF Glove-Box and Stripper System

    SciTech Connect (OSTI)

    Hsu, R.H.

    2001-03-28

    The glove box-stripper system for the Replacement Tritium Facility (RTF) has been modeled to determine its steady-state performance. To permit comparison, simulations of modified cases were compared with a standard or base case. This paper discusses tests conducted, results obtained and makes recommendations.

  14. Energy Savings Assessment for Digital-to-Analog Converter Boxes

    SciTech Connect (OSTI)

    Cheung, Hoi Ying Iris; Meier, Alan; Brown, Richard

    2011-01-18

    The Digital Television (DTV) Converter Box Coupon Program was administered by the U.S. government to subsidize purchases of digital-to-analog converter boxes, with up to two $40 coupons for each eligible household. In order to qualify as Coupon Eligible Converter Boxes (CECBs), these devices had to meet a number of minimum performance specifications, including energy efficiency standards. The Energy Star Program also established voluntary energy efficiency specifications that are more stringent than the CECB requirements. In this study, we measured the power and energy consumptions for a sample of 12 CECBs (including 6 Energy Star labeled models) in-use in homes and estimated aggregate energy savings produced by the energy efficiency policies. Based on the 35 million coupons redeemed through the end of the program, our analysis indicates that between 2500 and 3700 GWh per year are saved as a result of the energy efficiency policies implemented on digital-to-analog converter boxes. The energy savings generated are equivalent to the annual electricity use of 280,000 average US homes.

  15. Troubleshoot Glove Box Cryo-pump Eric Sundholm

    E-Print Network [OSTI]

    Wager, John F.

    Troubleshoot Glove Box Cryo-pump Eric Sundholm 8-4-06 Background Pump and chamber were in good working order for many years. Pumping motion on the cold head suddenly, and without warning, stopped. The predictable pumping was replaced by a shaking and apparent short stroking like ticking. Data

  16. IBM ILOG CPLEX What is inside of the box?

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    IBM ILOG CPLEX What is inside of the box? Ricardo Lima rlima@andrew.cmu.edu EWO Seminar CarnegieEWO seminar #12;Introduction CPLEX Optimization software package Commercialized by IBM ILOG Interfaces by IBM Latest stable release: 12.2 CPLEX history and facts 12/07/2010 11EWO seminar 2008 ­ Bixby, Gu

  17. Recovery Act Begins Box Remediation Operations at F Canyon

    Broader source: Energy.gov [DOE]

    AIKEN, S.C. – The F Canyon box remediation program, an American Recovery and Reinvestment Act project at Savannah River Site (SRS), has come online to process legacy transuranic (TRU) waste for off-site shipment and permanent disposal at the Waste Isolation Pilot Plant (WIPP), a geological repository in New Mexico.

  18. Investigation of the use of an Er:YAG laser and a fluoride glass fiber for laser angioplasty 

    E-Print Network [OSTI]

    Kwark, Bongsin

    1989-01-01

    INVESTIGATION OF THE USE OF AN ER:YAG LASER AND A FLUORIDE ClLASS FIBER FOR LASER ANGIOPLASTY A Thes&s BONC'SIN KA'ARK Submitted to the Office of Clraduate Sturlies of Texas A&M University in partial fulfillment of the requirements... for the degree of 'tIASTER OF SGIEVCE December Iqg9 Major Subject: Electrical Engineering INVESTIGATION OF THE IJSE OF AN ER:YAG LASER. AND A FLUORIDE GLASS FIBER FOR LASER ANGIOPLASTY A Thesis bi BONGSIN I~AVARI~ Approved as to style and content by: ry...

  19. Optical fiber sensor having a sol-gel fiber core and a method of making

    DOE Patents [OSTI]

    Tao, Shiquan; Jindal, Rajeev; Winstead, Christopher; Singh, Jagdish P.

    2006-06-06

    A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cladding. Alternatively, air can be used as a low refractive index medium. The sol-gel fibers have a micro pore structure which allows molecules to diffuse into the fiber core from the surrounding environment. Chemical and biochemical reagents can be doped into the fiber core. The sol-gel fiber can be used as a transducer for constructing an optical fiber sensor. The optical fiber sensor having an active sol-gel fiber core is more sensitive than conventional evanescent wave absorption based optical fiber sensors.

  20. High energy KrCl electric discharge laser

    DOE Patents [OSTI]

    Sze, Robert C. (Santa Fe, NM); Scott, Peter B. (Los Alamos, NM)

    1981-01-01

    A high energy KrCl laser for producing coherent radiation at 222 nm. Output energies on the order of 100 mJ per pulse are produced utilizing a discharge excitation source to minimize formation of molecular ions, thereby minimizing absorption of laser radiation by the active medium. Additionally, HCl is used as a halogen donor which undergoes a harpooning reaction with metastable Kr.sub.M * to form KrCl.

  1. Optical fiber inspection system

    DOE Patents [OSTI]

    Moore, F.W.

    1985-04-05

    A remote optical inspection system including an inspection head. The inspection head has a passageway through which pellets or other objects are passed. A window is provided along the passageway through which light is beamed against the objects being inspected. A plurality of lens assemblies are arranged about the window so that reflected light can be gathered and transferred to a plurality of coherent optical fiber light guides. The light guides transfer the light images to a television or other image transducer which converts the optical images into a representative electronic signal. The electronic signal can then be displayed on a signal viewer such as a television monitor for inspection by a person. A staging means can be used to support the objects for viewing through the window. Routing means can be used to direct inspected objects into appropriate exit passages for accepted or rejected objects. The inspected objects are advantageously fed in a singular manner to the staging means and routing means. The inspection system is advantageously used in an enclosure when toxic or hazardous materials are being inspected. 10 figs.

  2. Fiber optic temperature sensor

    SciTech Connect (OSTI)

    Rabold, D.

    1995-12-01

    Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

  3. A LASER-BASED MONODISPERSE CARBON FIBER GENERATOR

    E-Print Network [OSTI]

    Loo, Billy W.

    2013-01-01

    BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,BASED MONODISPERSE CARBON FIBER GENERATOR Billy W. Loo,

  4. Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber...

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

    Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber Production, Reduces Carbon Fiber Costs by 30% Tennessee: Oak Ridge National Laboratory Optimizes Carbon Fiber...

  5. The MESSy aerosol submodel MADE3 (v2.0b): description and a box model test

    SciTech Connect (OSTI)

    Kaiser, J. C.; Hendricks, J.; Righi, M.; Riemer, Nicole; Zaveri, Rahul A.; Metzger, S.; Aquila, Valentino

    2014-06-17

    We introduce MADE3 (Modal Aerosol Dynamics for Europe, adapted for global applications, version 3), an aerosol dynamics submodel for application in a global chemistry general circulation model, that builds on the predecessor aerosol submodels MADE and MADE-in. The main new features of MADE3 are the explicit representation of coarse particle interactions with fine particles and gases, and the inclusion of the hydrochloric acid (HCl)/chloride (Cl􀀀) partitioning between the gas and condensed phases. The aerosol size distribution is represented in the new model as a superposition of nine lognormal modes: one for fully soluble particles, one for insoluble particles, and one for mixed particles in each of three size ranges (Aitken, accumulation, and coarse mode size ranges). In order to assess MADE3’s performance we compare it to its predecessor MADE and to the much more detailed particle-resolved aerosol model PartMC-MOSAIC in a box model application. MADE3 and MADE results are very similar, except when the aerosol is dominated by sea spray particles. In such cases, Cl􀀀 concentrations are lower in MADE3 than in MADE due to the HCl/Cl􀀀 partitioning. Additionally, the aerosol nitrate concentration is higher in MADE3 due to the uptake on coarse particles. MADE3 and PartMCMOSAIC show substantial differences in the fine particle size distributions (sizes . 2?m) that could be relevant when simulating climate effects on a global scale. Nevertheless, the agreement between MADE3 and PartMC-MOSAIC is very good when it comes to coarse particle size distribution, and also in terms of aerosol composition. Considering these results and the well-established ability of MADE in reproducing observed aerosol loadings and composition, MADE3 seems suitable for application within a global model.

  6. Optimal Terminal Box Control for Single Duct Air-Handling Units 

    E-Print Network [OSTI]

    Cho, Y.; Vondal, J.; Wang, G.; Liu, M.

    2006-01-01

    Terminal boxes maintain room temperature by modulating supply air temperature and airflow in building HVAC systems. Terminal boxes with conventional control sequences often supply inadequate airflow to a conditioned space, resulting in occupant...

  7. Manufacturing of the motor mount of the uBox, an intelligent pillbox

    E-Print Network [OSTI]

    León, Jessica (Jessica E.)

    2008-01-01

    The uBox has been developed to be a solution to the medication adherence problems for a multitude of applications. The box offers a way to collect and formulate patient and volunteer adherence data for use in the field ...

  8. Energy use of set-top boxes and telephony products in the U.S.

    E-Print Network [OSTI]

    Rosen, Karen B.; Meier, Alan K.; Zandelin, Stephan

    2001-01-01

    chargers are typically included as part of wireless phonechargers. LBNL-45305 5 CONCLUSIONS This study found that cable boxes, wireless

  9. 10/2/2014 CL Advertising Information http://uwpress.wisc.edu/journals/journals/cl_ads.html 1/2

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    10/2/2014 CL Advertising Information http://uwpress.wisc.edu/journals/journals/cl_ads.html 1 of this page) Print Ad Rates Cost Width Height Full page (B&W) $530 43/4" 73/4" Half page (B&W) $440 43/4" 33/4" Cover 3 (Full page, B&W) $560 43/4" 73/4" Online Ad Rates Cost Width Height Leaderboard $450 728px 90

  10. Electromotive force responses of Cl[sub 2] gas sensor using BaCl[sub 2]-KCl solid electrolyte

    SciTech Connect (OSTI)

    Aono, Hiromichi; Sugimoto, Eisuke . Dept. of Industrial Chemistry); Mori, Yoshiaki; Okajima, Yasuhiro . Niihama Research Lab.)

    1993-11-01

    Chlorine is the most important halogen in industrial production. Chlorine exhaust gas has become a serious problem with regard to air pollution and acid rain in recent years. Solid electrolyte-type gas sensors are superior for SO[sub x] or CO[sub 2] detection because of their rapid response. A Cl[sub 2] gas sensor using BaCl[sub 2]-KCl solid electrolyte was investigated. The conductivity was greatly enhanced by KCl doping of the (1 [minus] x)BaCl[sub 2][minus]x KCl system, and a maximum conductivity of 5.6 [times] 10[sup [minus]5]S [times] cm[sup [minus]1] at 573 K was obtained for x = 0.02. The sensor probe was prepared by a melting method at 1,373 K. The electromotive force (EMF) measurement with the Cl[sub 2] gas sensor using the 0.97BaCl[sub 2]-0.03KCl solid electrolyte was performed with an Ag-AgCl solid reference electrode and an RuO[sub 2] measuring electrode. Good agreement between the measured and the calculated EMF values was obtained for Cl[sub 2] gas concentrations from 50 to 10,000 ppm at 623 K. The EMF response time with a change in Cl[sub 2] concentration is ca. 1 min for above 100 ppm and 2 to 5 min for lower concentrations. The measured EMF was not influenced by O[sub 2] or CO[sub 2] gas concentration. This sensor probe was very stable in the presence of water vapor at 623 K during a 90 day test period.

  11. On Reverse-Engineering S-Boxes with Hidden Design Criteria or Structure

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    On Reverse-Engineering S-Boxes with Hidden Design Criteria or Structure Alex Biryukov and Léo of F are far from random and propose a design criteria, along with an algorithm which generates S into the visual representation of S-box's DDT. Keywords: S-box design criteria, Skipjack, linearity, functional

  12. Black Box Design Ahmad Asi, Benjimin Chang, Mehdi Dadfarnia, Serge Kamta,

    E-Print Network [OSTI]

    Austin, Mark

    , Khan Black Box Design #12;Project Stakeholders ENES489P Black-Box Team and Advisors Military Logistics Use Case 4: Threats to System/Reliability Use Case 5: Maintenance Asi, Chang, Dadfarnia, Kamta, Khan Using the Black Box System Maintenance (has its own used case activity diagram) Data Rotator program

  13. Quick-Start Operating Guide Document No. 1800-13 Stainless Steel Glove Boxes

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Quick-Start Operating Guide Document No. 1800-13 Stainless Steel Glove Boxes (Series 300 ­ 600-Start Operating Guide Stainless Steel Glove Boxes (Series 300 ­ 600) © Copyright 2010 Terra Universal Inc. All.0Introduction This manual provides information on installing and operating your Terra Stainless Steel Glove Box

  14. Carbon nanotube fiber spun from wetted ribbon

    DOE Patents [OSTI]

    Zhu, Yuntian T; Arendt, Paul; Zhang, Xiefei; Li, Qingwen; Fu, Lei; Zheng, Lianxi

    2014-04-29

    A fiber of carbon nanotubes was prepared by a wet-spinning method involving drawing carbon nanotubes away from a substantially aligned, supported array of carbon nanotubes to form a ribbon, wetting the ribbon with a liquid, and spinning a fiber from the wetted ribbon. The liquid can be a polymer solution and after forming the fiber, the polymer can be cured. The resulting fiber has a higher tensile strength and higher conductivity compared to dry-spun fibers and to wet-spun fibers prepared by other methods.

  15. Continuous Fiber Ceramic Composites (CFCC)

    SciTech Connect (OSTI)

    R. A. Wagner

    2002-12-18

    This report summarizes work to develop CFCC's for various applications in the Industries of the Future (IOF) and power generation areas. Performance requirements range from relatively modest for hot gas filters to severe for turbine combustor liners and infrared burners. The McDermott Technology Inc. (MTI) CFCC program focused on oxide/oxide composite systems because they are known to be stable in the application environments of interest. The work is broadly focused on dense and porous composite systems depending on the specific application. Dense composites were targeted at corrosion resistant components, molten aluminum handling components and gas turbine combustor liners. The development work on dense composites led to significant advances in fiber coatings for oxide fibers and matrix densification. Additionally, a one-step fabrication process was developed to produce low cost composite components. The program also supported key developments in advanced oxide fibers that resulted in an improved version of Nextel 610 fiber (commercially available as Nextel 650) and significant progress in the development of a YAG/alumina fiber. Porous composite development focused on the vacuum winding process used to produce hot gas filters and infrared burner components.

  16. Modeling Time-dependent Responses of Piezoelectric Fiber Composite 

    E-Print Network [OSTI]

    Li, Kuo-An

    2011-02-22

    overall performance of PFCs having unidirectional piezoceramic fibers, such as PZT fibers, dispersed in viscoelastic polymer matrix. Two types of PFCs are studied, which are active fiber composites (AFCs) and macro fiber composites (MFCs). AFCs and MFCs...

  17. Fiber networks amplify active stress

    E-Print Network [OSTI]

    Pierre Ronceray; Chase Broedersz; Martin Lenz

    2015-07-22

    Large-scale force generation is essential for biological functions such as cell motility, embryonic development, and muscle contraction. In these processes, forces generated at the molecular level by motor proteins are transmitted by disordered fiber networks, resulting in large-scale active stresses. While these fiber networks are well characterized macroscopically, this stress generation by microscopic active units is not well understood. Here we theoretically study force transmission in these networks, and find that local active forces are rectified towards isotropic contraction and strongly amplified as fibers collectively buckle in the vicinity of the active units. This stress amplification is reinforced by the networks' disordered nature, but saturates for high densities of active units. Our predictions are quantitatively consistent with experiments on reconstituted tissues and actomyosin networks, and shed light on the role of the network microstructure in shaping active stresses in cells and tissue.

  18. Box- and peanut-shaped bulges: II. NIR observations

    E-Print Network [OSTI]

    R. Luetticke; R. -J. Dettmar; M. Pohlen

    2000-08-30

    We have observed 60 edge-on galaxies in the NIR in order to study the stellar distribution in galaxies with box/peanut-shaped bulges. The much smaller amount of dust extinction at these wavelengths allows us to identify in almost all target galaxies with box/peanut-shaped bulges an additional thin, central component in cuts parallel to the major axis. This structure can be identified with a bar. The length of this structure scaled by the length of the bulge correlates with the morphologically classified shape of the bulge. This newly established correlation is therefore mainly interpreted as the projection of the bar at different aspect angles. Galaxies with peanut bulges have a bar seen nearly edge-on and the ratio of bar length to thickness, 14 +/- 4, can be directly measured for the first time. In addition, the correlation of the boxiness of bulges with the bar strength indicates that the bar characteristic could partly explain differences in the bulge shape. Furthermore, a new size relation between the box/peanut structure and the central bulge is found. Our observations are discussed in comparison to a N-body simulation for barred galaxies (Pfenniger & Friedli 1991). We conclude that the inner region of barred disk galaxies are build up by three distinct components: the spheroidal bulge, a thin bar, and a b/p structure most likely representing the thick part of the bar.

  19. Breakthrough: Better Fiber for Better Products

    ScienceCinema (OSTI)

    Griffith, George; Garnier, John;

    2013-05-28

    Researchers at Idaho National Laboratory have developed a cost-effective method for the continuous production of alpha silicon carbide fiber. The exceptionally strong, lightweight fiber could enable significant performance improvements in many everyday products.

  20. Breakthrough: Better Fiber for Better Products

    SciTech Connect (OSTI)

    Griffith, George; Garnier, John;

    2012-01-01

    Researchers at Idaho National Laboratory have developed a cost-effective method for the continuous production of alpha silicon carbide fiber. The exceptionally strong, lightweight fiber could enable significant performance improvements in many everyday products.

  1. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

    1991-01-01

    A compact and portable diffraction grating maker comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate.

  2. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-05-21

    A compact and portable diffraction grating maker is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate. 4 figures.

  3. Development of a FiberDevelopment of a Fiber Continuity and LightContinuity and Light

    E-Print Network [OSTI]

    Minnesota, University of

    Development of a FiberDevelopment of a Fiber Continuity and LightContinuity and Light Calibration of light is collected by a WLS fiber;The flash of light is collected by a WLS fiber; the core contains a dye that shifts the bluethe core contains a dye that shifts the blue light wavelength to green.light

  4. NATIONAL RADIO ASTRONOMY OBSERVATORY POST OFFICE BOX 2 GREEN BANK, WEST VIRGINIA 24944-0002

    E-Print Network [OSTI]

    Groppi, Christopher

    Library ER Library Library Downtown VIA Library R. Lacasse IR Library Library Mountain P. Napier R. Weimer the last couple of years working with optical fibers. Fibers Two types of fiber are used on site. Both. A Fiber type 50/125 graded index - multimode. 6 6 dB/km attenuation. Bandwidth - 200 MHz - km. Wavelength

  5. Methanosaeta fibers in anaerobic migrating blanket reactors

    E-Print Network [OSTI]

    Angenent, Lars T.

    An anaerobic migrating blanket reactor (AMBR) was seeded with flocculent biomass from a digester and fedMethanosaeta fibers in anaerobic migrating blanket reactors L.T. Angenent,* D. Zheng,* S. Sung in these fibers. Keywords Anaerobic migrating blanket reactor; AMBR; fibers; oligonucleotide hybridization probes

  6. Moisture Penetration Through Optical Fiber Coatings

    E-Print Network [OSTI]

    Matthewson, M. John

    Moisture Penetration Through Optical Fiber Coatings J. L. Armstrong, M. J. Matthewson and C. R Fiber Coatings Janet L. Armstrong, 1 M. John Matthewson, 1 Charles R. Kurkjian 2 1 Rutgers University for measuring the diffusion coefficients of water vapor through optical fiber polymer coatings has been

  7. Assessing Deterioration of ADSS Fiber Optic Cables

    E-Print Network [OSTI]

    Assessing Deterioration of ADSS Fiber Optic Cables Due to Corona Discharge Final Project Report of ADSS Fiber Optic Cables Due to Corona Discharge Final Project Report George G. Karady, Project Leader-Supporting) fiber optic cables installed on high voltage lines. The high electric field on those lines generates

  8. Officials launch Carbon Fiber Technology Facility, announce

    E-Print Network [OSTI]

    Pennycook, Steve

    to reduce carbon fiber's high cost, Danielson noted: "Many of these new clean energy technologies are withinSCIENCE Officials launch Carbon Fiber Technology Facility, announce new manufacturing initiative and a large crowd of local business and civic leaders came to the Carbon Fiber Technology Facility (CFTF

  9. Monolithic fiber optic sensor assembly

    DOE Patents [OSTI]

    Sanders, Scott

    2015-02-10

    A remote sensor element for spectrographic measurements employs a monolithic assembly of one or two fiber optics to two optical elements separated by a supporting structure to allow the flow of gases or particulates therebetween. In a preferred embodiment, the sensor element components are fused ceramic to resist high temperatures and failure from large temperature changes.

  10. Scintillating fiber ribbon --- tungsten calorimeter

    SciTech Connect (OSTI)

    Bross, A.; Crisler, M.; Kross, B.; Wrbanek, J.

    1989-07-14

    We describe an ultra-high density scintillating fiber and tungsten calorimeter used as an active beam-dump for electrons. Data showing the calorimeter response to electrons with momenta between 50 and 350 GeV/c are presented. 9 figs.

  11. Fiber-type dosimeter with improved illuminator

    DOE Patents [OSTI]

    Fox, R.J.

    1985-12-23

    A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.

  12. Fiber-type dosimeter with improved illuminator

    DOE Patents [OSTI]

    Fox, Richard J. (Oak Ridge, TN)

    1987-01-01

    A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.

  13. Isothermal evaporation process simulation using the Pitzer model for the Quinary system LiCl–NaCl–KCl–SrCl2–H2O at 298.15 K

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

    Meng, Lingzong; Gruszkiewicz, Miroslaw S.; Deng, Tianlong; Guo, Yafei; Li, Dan

    2015-08-05

    In this study, the Pitzer thermodynamic model for solid-liquid equilibria in the quinary system LiCl–NaCl–KCl–SrCl2–H2O at 298.15 K was constructed by selecting the proper parameters for the subsystems in the literature. The solubility data of the systems NaCl–SrCl2–H2O, KCl–SrCl2–H2O, LiCl–SrCl2–H2O, and NaCl–KCl–SrCl2–H2O were used to evaluate the model. Good agreement between the experimental and calculated solubilities shows that the model is reliable. The Pitzer model for the quinary system at 298.15 K was then used to calculate the component solubilities and conduct computer simulation of isothermal evaporation of the mother liquor for the oilfield brine from Nanyishan district in themore »Qaidam Basin. The evaporation-crystallization path and sequence of salt precipitation, change in concentration and precipitation of lithium, sodium, potassium, and strontium, and water activities during the evaporation process were demonstrated. The salts precipitated from the brine in the order : KCl, NaCl, SrCl2?6H2O, SrCl2?2H2O, and LiCl?H2O. The entire evaporation process may be divided into six stages. In each stage the variation trends for the relationships between ion concentrations or water activities and the evaporation ratio are different. This result of the simulation of brines can be used as a theoretical reference for comprehensive exploitation and utilization of this type of brine resources.« less

  14. CL system: Giving instructions by corpus based selection Luciana Benotti

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    recorded au- dio clips rather than speech synthesis and recorded video for animating virtual humans contains human instructor's speech acts and the user's responses as physical actions, generates a virtual The CL system uses an algorithm that, given a task-based corpus situated in a virtual world, which

  15. ISSUE BRIEF 10 ClImATE TECHNOlOGy

    E-Print Network [OSTI]

    ISSUE BRIEF 10 ClImATE TECHNOlOGy DEPlOymENT POlICy RICHARD G. NEwEll 10 #12;CLIMATE TECHNOLOGy DEPLOYMENT POLICY OPTIONS 134 Richard G. Newell CLIMATE TECHNOLOGy DEPLOyMENT POLICy SUMMARy technology policies lower the overall cost #12;ASSESSING U.S. CLIMATE POLICy OPTIONS to society of achieving

  16. Interfacial Studies of Sized Carbon Fiber

    SciTech Connect (OSTI)

    Shahrul, S. N.; Hartini, M. N.; Hilmi, E. A.; Nizam, A. [Nanomaterials Program, Advance Materials Centre (AMREC), SIRIM Berhad, Lot 34, Jalan Hi-Tech Park, 09000, Kulim, Kedah (Malaysia)

    2010-03-11

    This study was performed to investigate the influence of sizing treatment on carbon fiber in respect of interfacial adhesion in composite materials, Epolam registered 2025. Fortafil unsized carbon fiber was used to performed the experiment. The fiber was commercially surface treated and it was a polyacrylonitrile based carbon fiber with 3000 filament per strand. Epicure registered 3370 was used as basic sizing chemical and dissolved in two types of solvent, ethanol and acetone for the comparison purpose. The single pull out test has been used to determine the influence of sizing on carbon fiber. The morphology of carbon fiber was observed by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The apparent interfacial strength IFSS values determined by pull out test for the Epicure registered 3370/ethanol sized carbon fiber pointed to a good interfacial behaviour compared to the Epicure registered 3370/acetone sized carbon fiber. The Epicure registered 3370/ethanol sizing agent was found to be effective in promoting adhesion because of the chemical reactions between the sizing and Epolam registered 2025 during the curing process. From this work, it showed that sized carbon fiber using Epicure registered 3370 with addition of ethanol give higher mechanical properties of carbon fiber in terms of shear strength and also provided a good adhesion between fiber and matrix compared to the sizing chemical that contain acetone as a solvent.

  17. Optical fiber sensors for harsh environments

    DOE Patents [OSTI]

    Xu, Juncheng; Wang, Anbo

    2007-02-06

    A diaphragm optic sensor comprises a ferrule including a bore having an optical fiber disposed therein and a diaphragm attached to the ferrule, the diaphragm being spaced apart from the ferrule to form a Fabry-Perot cavity. The cavity is formed by creating a pit in the ferrule or in the diaphragm. The components of the sensor are preferably welded together, preferably by laser welding. In some embodiments, the entire ferrule is bonded to the fiber along the entire length of the fiber within the ferrule; in other embodiments, only a portion of the ferrule is welded to the fiber. A partial vacuum is preferably formed in the pit. A small piece of optical fiber with a coefficient of thermal expansion chosen to compensate for mismatches between the main fiber and ferrule may be spliced to the end of the fiber.

  18. Widget:ExpandableBoxEnd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia: EnergyMaryland:Meadow Lake,Maine: EnergyWickliffe,ExpandableBoxEnd

  19. Box Butte County, Nebraska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine: Energy Resources Jump to: navigation, search EquivalentOhio:Box

  20. Numerical approach of the injection molding process of fiber-reinforced composite with considering fiber orientation

    SciTech Connect (OSTI)

    Nguyen Thi, T. B., E-mail: thanhbinh.skku@gmail.com, E-mail: yokoyama@kit.ac.jp; Yokoyama, A., E-mail: thanhbinh.skku@gmail.com, E-mail: yokoyama@kit.ac.jp [Department of Advanced Fibro-Science, Kyoto Institute of Technology (Japan); Ota, K., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp; Kodama, K., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp; Yamashita, K., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp; Isogai, Y., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp; Furuichi, K., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp; Nonomura, C., E-mail: kei-ota@toyobo.jp, E-mail: katsuhiro-kodama@toyobo.jp, E-mail: katsuhisa-yamashita@toyobo.jp, E-mail: yumiko-isogai@toyobo.jp, E-mail: kenji-furuichi@toyobo.jp, E-mail: chisato-nonomura@toyobo.jp [Toyobo Co., LTD. Research Center (Japan)

    2014-05-15

    One of the most important challenges in the injection molding process of the short-glass fiber/thermoplastic composite parts is being able to predict the fiber orientation, since it controls the mechanical and the physical properties of the final parts. Folgar and Tucker included into the Jeffery equation a diffusive type of term, which introduces a phenomenological coefficient for modeling the randomizing effect of the mechanical interactions between the fibers, to predict the fiber orientation in concentrated suspensions. Their experiments indicated that this coefficient depends on the fiber volume fraction and aspect ratio. However, a definition of the fiber interaction coefficient, which is very necessary in the fiber orientation simulations, hasn't still been proven yet. Consequently, this study proposed a developed fiber interaction model that has been introduced a fiber dynamics simulation in order to obtain a global fiber interaction coefficient. This supposed that the coefficient is a sum function of the fiber concentration, aspect ratio, and angular velocity. The proposed model was incorporated into a computer aided engineering simulation package C-Mold. Short-glass fiber/polyamide-6 composites were produced in the injection molding with the fiber weight concentration of 30 wt.%, 50 wt.%, and 70 wt.%. The physical properties of these composites were examined, and their fiber orientation distributions were measured by micro-computed-tomography equipment ?-CT. The simulation results showed a good agreement with experiment results.

  1. Use of coconut fiber as a low-cost thermal insulator

    SciTech Connect (OSTI)

    Kochhar, G.S.; Manohar, K. [Univ. of the West Indies, St. Augustine (Trinidad and Tobago)

    1997-11-01

    Cost is one of the major factors to be considered when choosing a thermal insulator. Design engineers continuously strive to provide the best at the lowest possible cost. In the tropics climate conditions are essentially hot and humid and a cause for daily discomfort. To some extent, air-conditioning of buildings has solved this problem. The major deterrent to air-conditioning is the exorbitant cost of imported thermal insulation materials. This has prompted a search for local, low-cost but effective thermal insulation for buildings. Coconut fiber is available at minimal cost from the copra industry in Trinidad, as it is a waste product from the coconut. The viability of using coconut fiber as building thermal insulation was explored by conducting thermal conductivity tests on 200 mm X 400 mm X 60 mm thick slab-like specimens. The test equipment used was a locally designed constant temperature hot box apparatus. This apparatus was designed to test slab-like specimens under steady-state conditions. The reliability if this experimental set up was checked using Gypsum Plaster. The thermal conductivity test results for coconut fiber over the density range 30 kg/m{sup 3} to 115 kg/m{sup 3} showed the characteristic hooked shape graph for fibrous material. For the 60 mm thick specimens at a mean temperature of 39 C, a minimum thermal conductivity of 0.058 W/mK occurred at an optimum density of 85 kg/m{sup 3}. The thermal conductivity of commonly used industrial insulators, namely loose-fill expanded vermiculite, cellular glass and blanket fiber glass, at a mean temperature of 38 C are 0.066 W/mK, 0.061 W/mK and 0.052 W/mK respectively. When compared, these results show that air dried coconut fiber has far reaching potential for use as an effective building thermal insulation.

  2. All-fiber Passively Q-switched Laser Based on Tm3+-doped Tellurite Fiber

    E-Print Network [OSTI]

    Kuan, Pei-Wen; Li, Kefeng; Zhang, Lei; Fan, Xiaokang; Hasan, Tawfique; Wang, Fengqiu; Hu, Lili

    2014-12-24

    the tellurite-based erbium-doped fiber and high numerical aperture (NA) silica fiber [20]. In practice, though commercial fusion splicers are available, the process of splicing two different fibers is complex. Due to this, ~2 µm tellurite fiber lasers have... monolithic single frequency 1.97 m Tm-doped fiber amplifier,” High Power Laser Sci. Eng., vol. 1, no 3-4, pp. 123-125, 2013. [4]. X. Wang, P. Zhou, X. Wang, H. Xiao, and Z. Liu, “Bursts with shape-alterable pulses in a compact Tm-doped fiber laser...

  3. Tritium stripping in a nitrogen glove box using palladium/zeolite and SAES St 198{trademark}

    SciTech Connect (OSTI)

    Klien, J.E.; Wermer, J.R.

    1995-01-01

    Glove box clean-up experiments were conducted in a nitrogen glove box using palladium deposited on zeolite (Pd/z) and a SAES St 198{trademark} getter as tritium stripping materials. Protium/deuterium samples spiked with tritium were released into a 620 liter glove box to simulate tritium releases in a 10,500 liter glove box. The Pd/z and the SAES St 198{trademark} stripper beds produced a reduction in tritium activity of approximately two to three orders of magnitude and glove box clean-up was limited by a persistent background tritium activity level. Attempts to significantly reduce the glove box activity to lower levels without purging were unsuccessful.

  4. Tritium stripping in a nitrogen glove box using palladium/zeolite and SAES St 198

    SciTech Connect (OSTI)

    Klein, J.E.; Wermer, J.R.

    1995-10-01

    Glove box clean-up experiments were conducted in a nitrogen glove box using palladium deposited on zeolite (Pd/z) and a SAES St 198 getter as tritium stripping materials. Protium/deuterium samples spiked with tritium were released into a 620 liter glove box to simulate tritium releases in a 10,500 liter glove box. The Pd/z and the SAES St 198 stripper beds produced a reduction in tritium activity of approximately two to three orders of magnitude and glove box clean-up was limited by a persistent background tritium activity level. Attempts to significantly reduce the glove box activity to lower levels without purging were unsuccessful. 3 refs., 6 figs., 1 tab.

  5. Interferometric fiber optic displacement sensor

    DOE Patents [OSTI]

    Farah, J.

    1999-04-06

    A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology. A resonant element in the form of a micro-bridge is incorporated in the ridge waveguide and produces a frequency output which is readily digitizeable and immune to laser frequency noise. Finally, monolithic mechanical means for phase modulation are provided on the same sensor substrate. This is done by vibrating the cantilever or micro-bridge either electrically or optically. 23 figs.

  6. Interferometric fiber optic displacement sensor

    DOE Patents [OSTI]

    Farah, John (M.I.T. Branch P.O. Box 301, Cambridge, MA 02139)

    1995-01-01

    A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology. A resonant element in the form of a micro-bridge is incorporated in the ridge waveguide and produces a frequency output which is readily digitizeable and immune to laser frequency noise. Finally, monolithic mechanical means for phase modulation are provided on the same sensor substrate. This is done by vibrating the cantilever or micro-bridge either electrically or optically.

  7. Interferometric fiber optic displacement sensor

    DOE Patents [OSTI]

    Farah, J.

    1995-05-30

    A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology. A resonant element in the form of a micro-bridge is incorporated in the ridge waveguide and produces a frequency output which is readily digitizeable and immune to laser frequency noise. Finally, monolithic mechanical means for phase modulation are provided on the same sensor substrate. This is done by vibrating the cantilever or micro-bridge either electrically or optically. 29 figs.

  8. Interferometric fiber optic displacement sensor

    DOE Patents [OSTI]

    Farah, John (M.I.T. P.O. Box 397301, Cambridge, MA 02139)

    1999-01-01

    A method is presented to produce a change in the optical path length in the gap between two single mode optical fibers proportional to the lateral displacement of either fiber end normal to its axis. This is done with the use of refraction or diffraction at the interface between a guiding and non-guiding media to change the direction of propagation of the light in the gap. A method is also presented for laying a waveguide on a cantilever so that the displacement of the tip of the cantilever produces a proportional path length change in the gap by distancing the waveguide from the neutral axis of the cantilever. The fiber is supported as a cantilever or a waveguide is deposited on a micromachined cantilever and incorporated in an interferometer which is made totally on a silicon substrate with the use of integrated-optic technology. A resonant element in the form of a micro-bridge is incorporated in the ridge waveguide and produces a frequency output which is readily digitizeable and immune to laser frequency noise. Finally, monolithic mechanical means for phase modulation are provided on the same sensor substrate. This is done by vibrating the cantilever or micro-bridge either electrically or optically.

  9. A Model for Fiber Length Attrition in Injection-Molded Long-Fiber Composites

    SciTech Connect (OSTI)

    TuckerIII, Charles L. [University of Illinois, Urbana-Champaign; Phelps, Jay H [University of Illinois, Urbana-Champaign; El-Rahman, Ahmed Abd [University of Illinois, Urbana-Champaign; Kunc, Vlastimil [ORNL

    2013-01-01

    Long-fiber thermoplastic (LFT) composites consist of an engineering thermoplastic matrix with glass or carbon reinforcing fibers that are initially 10 to 13 mm long. When an LFT is injection molded, flow during mold filling orients the fibers and degrades the fiber length. Fiber orientation models for injection molding are well developed, and special orientation models for LFTs have been developed. Here we present a detailed quantitative model for fiber length attrition in a flowing fiber suspension. The model tracks a discrete fiber length distribution (FLD) at each spatial node. Key equations are a conservation equation for total fiber length, and a breakage rate equation. The breakage rate is based on buckling of fibers due to hydrodynamic forces, when the fibers are in unfavorable orientations. The FLD model is combined with a mold filling simulation to predict spatial and temporal variations in fiber length distribution in a mold cavity during filling. The predictions compare well to experiments on a glassfiber/ PP LFT molding. Fiber length distributions predicted by the model are easily incorporated into micromechanics models to predict the stress-strain behavior of molded LFT materials. Author to whom correspondence should be addressed; electronic mail: ctucker@illinois.edu 1

  10. Optimization Online - RBFOpt: an open-source library for black-box ...

    E-Print Network [OSTI]

    Alberto Costa

    2014-09-12

    Sep 12, 2014 ... RBFOpt: an open-source library for black-box optimization with costly function evaluations. Alberto Costa ... Classification Scheme · Credits

  11. Predictive Engineering Tools for Injection-Molded Long-Carbon-Fiber Thermoplastic Composites - Second FY 2015 Quarterly Report

    SciTech Connect (OSTI)

    Nguyen, Ba Nghiep; Fifield, Leonard S.; Kijewski, Seth A.; Sangid, Michael D.; Wang, Jin; Costa, Franco; Tucker, III, Charles L.; Mathur, Raj N.; Gandhi, Umesh N.; Mori, Steven

    2015-05-19

    During the second quarter of FY 2015, the following technical progress has been made toward project milestones: 1) Autodesk reviewed 3D fiber orientation distribution (FOD) comparisons and provided support on improving accuracy. 2) Autodesk reviewed fiber length distribution (FLD) data comparisons and provided suggestions, assisted PNNL in FOD and FLD parameter settings optimization, and advised PNNL on appropriate through thickness thermal conductivity for improved frozen layer effect on FOD predictions. Autodesk also participated in project review meetings including preparations and discussions towards passing the go/no-go decision point. 3) Autodesk implemented an improved FOD inlet profile specification method through the part thickness for 3D meshes and provided an updated ASMI research version to PNNL. 4) The University of Illinois (Prof. C.L. Tucker) provided Autodesk with ideas to improve fiber orientation modeling 5) Purdue University re-measured fiber orientation for the fast-fill 50wt% LCF/PA66 edge-gated plaque, and delivered the fiber orientation data for this plaque at the selected locations (named A, B, and C, Figure 1) to PNNL. Purdue also re-measured fiber orientation for locations A on the fast-fill 30wt% LCF/PP and 50wt% LCF/PA66 center-gated plaques, which exhibited anomalous fiber orientation behavior. 6) Purdue University conducted fiber length measurements and delivered the length data to PNNL for the purge materials (slow-fill 30wt% LCF/PP and 30wt% LCF/PA66 purge materials) and PlastiComp plaques selected on the go/no-go list for fiber length model validation (i.e., slow-fill edge-gated 30wt% LCF/PP and 30wt% LCF/PA66 plaques, Locations A, B, and C). 7) PNNL developed a method to recover intact carbon fibers from LCF/PA66 materials. Isolated fibers were shipped to Purdue for length distribution analysis. 8) PNNL completed ASMI mid-plane analyses for all the PlastiComp plaques defined on the go/no-go list for fiber orientation (FO) model validation and compared the predicted fiber orientations with the measured data provided by Purdue at Locations A, B, and C on these plaques. The 15% accuracy criterion based on evaluation of tensile and bending stiffness was used to assess the accuracy in fiber orientation predictions. 9) PNNL completed ASMI mid-plane analyses for all the PlastiComp plaques defined on the go/no-go list for fiber length distribution (FLD) model validation and compared the predicted length distributions with the measured data provided by Purdue at Locations A, B, and C on these plaques. The 15% accuracy criterion based on evaluation of tensile and bending stiffness was used to assess the accuracy in fiber orientation predictions. 10) PNNL tested the new ASMI version received from Autodesk in March 2015, examined and discussed 3D fiber orientation predictions for PlastiComp plaques. 11) PlastiComp, Inc. (PlastiComp), Toyota Research Institute North America (Toyota) and Magna Exteriors and Interiors Corporation (Magna) participated in discussions with team members on the go/no-go plan. Toyota continued the discussion with Magna on tool modification for molding the complex part in order to achieve the target fiber length in the part.

  12. The Information Systems Constraint Language (ISyCL

    E-Print Network [OSTI]

    Decker, Louis Phillips

    1993-01-01

    Constructs B. Systems Layer Constructs C. Meta Layer Constructs IV. APPLICATION TO IDEF1 A. The IDEF1 Slice B. Sample IDEF1 Model V. CONCLUSIONS A. Applicability B. Effectiveness C, Reliability D. Verifiability E. Future Directions REFERENCES... method. The translation of the graphical model to an ISyCL representation is accomplished by the tool using meta layer definitions which would have been defined earlier. Very few people will ever see these definitions, much less write them...

  13. Programmable optic-fiber delay line 

    E-Print Network [OSTI]

    Fang, Shin-Puu

    1991-01-01

    . Motion of coupled pendula . 4. Circuit schematic of temperature control 5. Basic configuration of electric arc fusion splicer . . . 6. The arrangement of heater 7. The output optical power from one port versus the temperature of the heater 8... ( stripping tool ) and chemical stripping ( acetone or methylene chloride ) technique can be used to remove the protective polymer fiber coating. A commercial Fujikura ct-40 fiber cleaver used skillfully can produce an end surface suitable for fiber fusion...

  14. The effects of fiber waviness on the compressive response of fiber reinforced composite materials 

    E-Print Network [OSTI]

    Davis, John Jerome

    1989-01-01

    mathematical models, based on Euler- Bernoulli beams supported by elastic matrix layers, are developed for predicting the compressive behavior of composites with some initial waviness. The models include several single fiber models and one series of fibers... stability for the long slender fibers. Considerable effort has been spent studying the compressive response of composite materials, and the research presented herein focuses on the behavior of composite materials under compressive loads. Fiber waviness...

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

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

    Natural Fiber Composites: Retting, Preform Manufacture & Molding FY 2008 Progress Report for Lightweighting Materials - 8. Polymer Composites Research and Development FY 2009...

  16. The Influences of Fiber Feature and Polymer Melt Index on Mechanical Properties of Sugarcane Fiber/Polymer

    E-Print Network [OSTI]

    The Influences of Fiber Feature and Polymer Melt Index on Mechanical Properties of Sugarcane Fiber/Polymer.interscience.wiley.com). ABSTRACT: The fiber characteristics (i.e., the fiber type, morphology, and dimension) and polymer melt flow sugarcane fiber/polymer composites, the HDPE resins with a low MFI value presented high tensile and impact

  17. Analysis of a graphite foam-NaCl latent heat storage system for...

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

    Analysis of a graphite foam-NaCl latent heat storage system for supercritical CO2 power cycles for concentrated solar power Title Analysis of a graphite foam-NaCl latent heat...

  18. Fiber optic temperature sensor using a grating on an angled fiber tip 

    E-Print Network [OSTI]

    Varadarajan, Harini

    2000-01-01

    A fiber optic temperature sensor intended to sense temperatures up to 1400°C was investigated experimentally. A key element of the sensor is a grating on the 45°-angled tip of a single mode fiber. When light propagating in the fiber reaches the tip...

  19. FIBER OPTIC SENSING OF A CARBON FIBER PRESfRESSED CONCRETE HIGHWAY BRIDGE

    E-Print Network [OSTI]

    FIBER OPTIC SENSING OF A CARBON FIBER PRESfRESSED CONCRETE HIGHWAY BRIDGE R. M. Measuresl , T. Rizkalla5 1Fiber Optic Smart Structures Lab: UTlAS, 4925 Dufferin St., Downsview, Ontario, CANADA 2 Con ofsteel within large concrete structures, such as bridges are leading to consideration ofcarbonfiber based

  20. Efficiency of pump absorption in double-clad fiber amplifiers. I. Fiber with circular symmetry

    E-Print Network [OSTI]

    Kouznetsov, Dmitrii

    Efficiency of pump absorption in double-clad fiber amplifiers. I. Fiber with circular symmetry with an absorbing core is treated as a model for pump absorption in a double-clad optical fiber amplifier. Mode the pump absorption and is analyzed in the speckle-mode approximation for the example of a Kerr

  1. Failure of Carbon Fibers at a Crease in a Fiber-Reinforced Silicone Sheet

    E-Print Network [OSTI]

    Pellegrino, Sergio

    -based Weibull modulus of tensile failure mB Weibull modulus of bending failure M bending moment n number of 1 mm decrease the maximum strain in the fibers near the compression surface. This paper shows's modulus Et tensile Young's modulus of fiber Ec compressive Young's modulus of fiber F end force on looped

  2. Cl in modern groundwater dated by a multi-tracer approach (3

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    by S.K. Frape Abstract 36 Cl produced by thermonuclear bomb testing has been proposed as an additional

  3. Carbon Fiber and Clean Energy: 4 Uses for Industry | Department...

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

    Carbon Fiber and Clean Energy: 4 Uses for Industry Carbon Fiber and Clean Energy: 4 Uses for Industry February 7, 2014 - 3:27pm Addthis Oxidized fibers move to a high temperature...

  4. Low coverage spontaneous etching and hyperthermal desorption of aluminum chlorides from Cl2 Al,,111...

    E-Print Network [OSTI]

    Kummel, Andrew C.

    thermal desorption translational energy for AlCl3 . Cl2 sticking probability measurements and AlxCly etch the processes involved in both the thermal and ion-assisted etching of Al 111 by Cl2 .9 Spontaneous high products actually exit the surface at hyperthermal velocities which correspond to 2­30 times thermal energy

  5. 1Black Box Software Testing Copyright 2003 Cem Kaner The Role of Testers in XP

    E-Print Network [OSTI]

    1Black Box Software Testing Copyright © 2003 Cem Kaner The Role of Testers in XP Cem Kaner August reflect the views of the National Science Foundation (NSF). #12;2Black Box Software Testing Copyright © 2003 Cem Kaner Testing: The Traditional View · Many years ago, the software development community

  6. AN IMPROVEMENT IN HATCHING AND REARING BOXES; WITH NOTES ON THE CONTINUOUS .FEEDING

    E-Print Network [OSTI]

    of which the box is built, its rectangular form, and, last but not least, the position at which the waste. In the course of a few days the inside of the box up to water level- assuming, of course, that it is in use

  7. Probabilistic Analysis of Onion Routing in a Black-box Model JOAN FEIGENBAUM, Yale University

    E-Print Network [OSTI]

    , Tor 1. INTRODUCTION Every day, half a million people use the onion-routing network Tor [Dingledine etA Probabilistic Analysis of Onion Routing in a Black-box Model JOAN FEIGENBAUM, Yale University a probabilistic analysis of onion routing. The analysis is presented in a black-box model of anonymous

  8. A New Cauchy-Based Black-Box Technique for Uncertainty in Risk Analysis

    E-Print Network [OSTI]

    Kreinovich, Vladik

    A New Cauchy-Based Black-Box Technique for Uncertainty in Risk Analysis V. Kreinovich a,, S information in risk analysis. Several such techniques have been presented, often on a heuristic basis. Key words: Uncertainty, Risk analysis, Monte-Carlo, black-box techniques PACS: 02.70.Tt, 02.70.Uu, 02

  9. A New CauchyBased BlackBox Technique for Uncertainty in Risk Analysis

    E-Print Network [OSTI]

    Kreinovich, Vladik

    A New Cauchy­Based Black­Box Technique for Uncertainty in Risk Analysis V. Kreinovich a;\\Lambda , S information in risk analysis. Several such techniques have been presented, often on a heuristic basis. Key words: Uncertainty, Risk analysis, Monte­Carlo, black­box techniques PACS: 02.70.Tt, 02.70.Uu, 02

  10. S-box pipelining using genetic algorithms for high-throughput AES implementations: How

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    S-box pipelining using genetic algorithms for high-throughput AES implementations: How fast can we. In this manuscript, we explore how Genetic Algorithms (GAs) can be used for pipelining the AES substitution box based the implementation area [5,6]. However, when considering fast hardware implementations, pipelining is an obvious

  11. Regulating the ethylene response of a plant by modulation of F-box proteins

    DOE Patents [OSTI]

    Guo, Hongwei (La Jolla, CA); Ecker, Joseph R. (Carlsbad, CA)

    2010-02-02

    The invention relates to transgenic plants having reduced sensitivity to ethylene as a result of having a recombinant nucleic acid encoding a F-box protein, and a method of producing a transgenic plant with reduced ethylene sensitivity by transforming the plant with a nucleic acid sequence encoding a F-box protein.

  12. On highly nonlinear S-boxes and their inability to thwart DPA attacks (completed version)

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    of transparency order of S-boxes. This new characteristic is related to the ability of an S-box, used in a cryptosystem in which the round keys are introduced by addition, to thwart single-bit or multi-bit DPA attacks- tion about twice slower). We prove lower bounds on the transparency order of highly nonlinear S

  13. Starting pitch for carbon fibers

    SciTech Connect (OSTI)

    Uemura, S.; Takashima, H.; Kato, O.; Harakawa, M.

    1986-04-01

    This patent describes a starting pitch for producing carbon fiber. This pitch essentially consists of a mixture of (a) 100 parts by weight of a petroleum pitch and (b) 5 to 500 parts by weight of a methanol-insoluble and benzene-soluble component contained in a heavy oil obtained in a fluid catalytic cracking of petroleum. The heavy oil has a boiling range not lower than 200/sup 0/C. The component has been obtained by treating the heavy oil with methanol and benzene so as to remove methanol soluble and benzene insoluble fractions therefrom while retaining therein methanol-insoluble and benzene-soluble fractions.

  14. Evaluation of the performance of polypropylene fibers on soil stabilization 

    E-Print Network [OSTI]

    Sangineni, Srinivas Meherji

    1992-01-01

    the reinforcement or reinforcing material, whereas the continuous phase is termed as matrix (11). Composites having short fibers as reinforcement are termed as short-fiber composites. Composites having long fibers as reinforcement are termed as long or continuous-fiber... composites. The reinforcing material for this study is polypropylene fibers. The matrix material consists of clay, sand, clay/lime, and sand/cement. Bond - It is the interfacial bond between the fibers and the matrix material. If no slippage occurs...

  15. The mechanical properties of individual, electrospun fibrinogen fibers Christine R. Carlisle a

    E-Print Network [OSTI]

    Welch, Greg

    electrostatically into nanoscopic fibers. In this tech- nique, termed ``electrospinning'', fibers are formed from

  16. Fiber-Reinforced Polymer Composites: Pursuing the Promise

    SciTech Connect (OSTI)

    2014-02-01

    Fiber-reinforced polymer composites are made by combining a plastic polymer resin together with strong reinforcing fibers, which forms a new composite material with enhanced overall performance.

  17. SURFACE MORPHOLOGY OF CARBON FIBER POLYMER COMPOSITES AFTER LASER...

    Office of Scientific and Technical Information (OSTI)

    SURFACE MORPHOLOGY OF CARBON FIBER POLYMER COMPOSITES AFTER LASER STRUCTURING Citation Details In-Document Search Title: SURFACE MORPHOLOGY OF CARBON FIBER POLYMER COMPOSITES AFTER...

  18. Renewable, Low-Cost Carbon Fiber for Lightweight Vehicles: Summary...

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

    Renewable, Low-Cost Carbon Fiber for Lightweight Vehicles: Summary Report Renewable, Low-Cost Carbon Fiber for Lightweight Vehicles: Summary Report This report outlines the final...

  19. Oak Ridge National Laboratory Carbon Fiber Technology Facility

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

    Oak Ridge National Laboratory Carbon Fiber Technology Facility Low-Cost Carbon Fiber | Proposal Guidelines Proposal Guidelines Proposals should be no more than 5 single spaced...

  20. Fiber Reinforced Polymer Composite Manufacturing - RFI Part 2...

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

    6 More Documents & Publications Fiber Reinforced Polymer Composite Manufacturing Workshop Fiber Reinforced Polymer Composite Manufacturing - RFI DE-FOA-0000980: Summary of...

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

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

    80 More Documents & Publications Fiber Reinforced Polymer Composite Manufacturing Workshop Fiber Reinforced Polymer Composite Manufacturing - RFI Part 2 DE-FOA-0001056: Summary of...

  2. The Importance of Carbon Fiber to Polymer Additive Manufacturing...

    Office of Scientific and Technical Information (OSTI)

    The Importance of Carbon Fiber to Polymer Additive Manufacturing Citation Details In-Document Search Title: The Importance of Carbon Fiber to Polymer Additive Manufacturing...

  3. Fiber optic probe having fibers with endfaces formed for improved coupling efficiency and method using same

    DOE Patents [OSTI]

    O`Rourke, P.E.; Livingston, R.R.

    1995-03-28

    A fiber optic probe is disclosed for detecting scattered light, with transmitting and receiving fibers having slanted ends and bundled together to form a bevel within the tip of the probe. The probe comprises a housing with a transparent window across its tip for protecting the transmitting and receiving fibers held therein. The endfaces of the fibers are slanted, by cutting, polishing and the like, so that they lie in a plane that is not perpendicular to the longitudinal axis of the respective fiber. The fibers are held in the tip of the probe using an epoxy and oriented so that lines normal to the slanted endfaces are divergent with respect to one another. The epoxy, which is positioned substantially between the transmitting and receiving fibers, is tapered so that the transmitting fiber, the epoxy and the receiving fiber form a bevel of not more than 20 degrees. The angled fiber endfaces cause directing of the light cones toward each other, resulting in improved light coupling efficiency. A light absorber, such as carbon black, is contained in the epoxy to reduce crosstalk between the transmitting and receiving fibers. 3 figures.

  4. Transverse lightwave circuits in microstructured optical fibers

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    ´Ecole Polytechnique de Montr´eal, G´enie Physique, C.P. 6079, succ. Centre-Ville Montreal, Qu´ebec H3C3A, rather than proximity, energy transfer via transverse lightguides built into a fiber cross-core crosstalk via proximity coupling. Controllable energy transfer between fiber cores is then achieved

  5. Lee McGetrick Director, Carbon Fiber

    E-Print Network [OSTI]

    rayon and high-modulus PAN precursors. It is designed to process materials in either tow or web forms fiber and is designed to also spin lignin and pitch-based precursors in either tow or web forms speed · Melt-blown web production up to 300 mm width, packaged or direct-fed to carbon fiber line

  6. Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection

    DOE Patents [OSTI]

    Wood, C.B.

    1992-12-15

    A fiber optic voltage sensor is described which includes a source of light, a reference fiber for receiving a known percentage of the light and an electrostrictive element having terminals across which is applied, a voltage to be measured. The electrostrictive element is responsive to the applied voltage to assume an altered physical state. A measuring fiber also receives a known percentage of light from the light source and is secured about the electrostrictive element. The measuring fiber is provided with a cladding and exhibits an evanescent wave in the cladding. The measuring fiber has a known length which is altered when the electrostrictive element assumes its altered physical state. A differential sensor is provided which senses the intensity of light in both the reference fiber and the measuring fiber and provides an output indicative of the difference between the intensities. 3 figs.

  7. Method for preparing polyaniline fibers

    DOE Patents [OSTI]

    Mattes, Benjamin R. (Santa Fe, NM); Wang, Hsing-Lin (Los Alamos, NM)

    2000-01-01

    Stable, concentrated solutions of high molecular weight polyaniline. In order to process high quality fibers and other articles possessing good mechanical properties, it is known that solution concentrations of the chosen polymer should be in the range from 15-30% (w/w). Moreover, it is desirable to use the highest molecular weight consistent with the solubility properties of the polymer. However, such solutions are inherently unstable, forming gels before processing can be achieved. The present invention describes the addition gel inhibitors (GIs) to the polymer solution, thereby permitting high concentrations (>15% (w/w)) of high molecular weight ((M.sub.w)>120,000, and (M.sub.n)>30,000) emeraldine base (EB) polyaniline to be dissolved. Secondary amines have been used for this purpose in concentrations which are small compared to those which might otherwise be used in a cosolvent role therefor. The resulting solutions are useful for generating excellent fibers, films, coatings and other objects, since the solutions are stable for significant time periods, and the GIs are present in too small concentrations to cause polymer deterioration. It is demonstrated that the GIs found to be useful do not act as cosolvents, and that gelation times of the solutions are directly proportional to the concentration of GI. In particular, there is a preferred concentration of GI, which if exceeded causes structural and electrical conductivity degradation of resulting articles. Heating of the solutions significantly improves solubility.

  8. Remotely readable fiber optic compass

    DOE Patents [OSTI]

    Migliori, A.; Swift, G.W.; Garrett, S.L.

    1985-04-30

    A remotely readable fiber optic compass. A sheet polarizer is affixed to a magnet rotatably mounted in a compass body, such that the polarizer rotates with the magnet. The optical axis of the sheet polarizer is preferably aligned with the north-south axis of the magnet. A single excitation light beam is divided into four identical beams, two of which are passed through the sheet polarizer and through two fixed polarizing sheets which have their optical axes at right angles to one another. The angle of the compass magnet with respect to a fixed axis of the compass body can be determined by measuring the ratio of the intensities of the two light beams. The remaining ambiguity as to which of the four possible quadrants the magnet is pointing to is resolved by the second pair of light beams, which are passed through the sheet polarizer at positions which are transected by two semicircular opaque strips formed on the sheet polarizer. The incoming excitation beam and the four return beams are communicated by means of optical fibers, giving a remotely readable compass which has no electrical parts.

  9. Methods And Apparatus For Acoustic Fiber Fractionation

    DOE Patents [OSTI]

    Brodeur, Pierre (Smyrna, GA)

    1999-11-09

    Methods and apparatus for acoustic fiber fractionation using a plane ultrasonic wave field interacting with water suspended fibers circulating in a channel flow using acoustic radiation forces to separate fibers into two or more fractions based on fiber radius, with applications of the separation concept in the pulp and paper industry. The continuous process relies on the use of a wall-mounted, rectangular cross-section piezoelectric ceramic transducer to selectively deflect flowing fibers as they penetrate the ultrasonic field. The described embodiment uses a transducer frequency of approximately 150 kHz. Depending upon the amount of dissolved gas in water, separation is obtained using a standing or a traveling wave field.

  10. Carbon fiber manufacturing via plasma technology

    DOE Patents [OSTI]

    Paulauskas, Felix L. (Knoxville, TN); Yarborough, Kenneth D. (Oak Ridge, TN); Meek, Thomas T. (Knoxville, TN)

    2002-01-01

    The disclosed invention introduces a novel method of manufacturing carbon and/or graphite fibers that avoids the high costs associated with conventional carbonization processes. The method of the present invention avoids these costs by utilizing plasma technology in connection with electromagnetic radiation to produce carbon and/or graphite fibers from fully or partially stabilized carbon fiber precursors. In general, the stabilized or partially stabilized carbon fiber precursors are placed under slight tension, in an oxygen-free atmosphere, and carbonized using a plasma and electromagnetic radiation having a power input which is increased as the fibers become more carbonized and progress towards a final carbon or graphite product. In an additional step, the final carbon or graphite product may be surface treated with an oxygen-plasma treatment to enhance adhesion to matrix materials.

  11. Long glass fiber orientation in thermoplastic composites using a model that accounts for the flexibility of the fibers

    E-Print Network [OSTI]

    Wapperom, Peter

    Long glass fiber orientation in thermoplastic composites using a model that accounts, thermoplastics are reinforced with fibers to increase their stiffness, strength, and impact toughness

  12. UW School of Oceanography Box 357940 206-543-5062 UW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206-543-0463

    E-Print Network [OSTI]

    Riser, Stephen C.

    /Position: Address: Period of Use: From To Office Phone Number: Email Address: Cell Phone Number: 2. IndividualUW School of Oceanography Box 357940 206-543-5062 UW EH&S Radiation Safety Section Box 354400 201-543-5062 UW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206

  13. VCU International Admissions 408 West Franklin Street, P.O. Box 843043, Richmond, Virginia 23284-3012

    E-Print Network [OSTI]

    Gough, Christopher M.

    VCU International Admissions 408 West Franklin Street, P.O. Box 843043, Richmond, Virginia 23284-3012

  14. Isotopic hydrogen analysis via conventional and surface-enhanced fiber optic Raman spectroscopy

    SciTech Connect (OSTI)

    LASCOLA, ROBERT

    2004-09-23

    This report describes laboratory development and process plant applications of Raman spectroscopy for detection of hydrogen isotopes in the Tritium Facilities at the Savannah River Site (SRS), a U.S. Department of Energy complex. Raman spectroscopy provides a lower-cost, in situ alternative to mass spectrometry techniques currently employed at SRS. Using conventional Raman and fiber optics, we have measured, in the production facility glove boxes, process mixtures of protium and deuterium at various compositions and total pressures ranging from 1000-4000 torr, with detection limits ranging from 1-2 percent for as low as 3-second integration times. We are currently investigating fabrication techniques for SERS surfaces in order to measure trace (0.01-0.1 percent) amounts of one isotope in the presence of the other. These efforts have concentrated on surfaces containing palladium, which promotes hydrogen dissociation and forms metal hydride bonds, essentially providing a chemical enhancement mechanism.

  15. LeuT Na+-dependent pump KcsA K+ channel Ca2+ ATPase pump ClC Cl/H+ exchanger

    E-Print Network [OSTI]

    Alford, Simon

    LeuT Na+-dependent pump KcsA K+ channel Ca2+ ATPase pump ClC Cl­/H+ exchanger The number of binding in a K+ channel and a Ca2+ pump. Sunday, January 26, 14 #12;The Structure of the Calcium Channel: Basis

  16. The reaction ensemble method for the computer simulation of chemical and phase equilibria. II. The Br2 Cl2 BrCl system

    E-Print Network [OSTI]

    Lisal, Martin

    The reaction ensemble method for the computer simulation of chemical and phase equilibria. II of reaction and phase equilib- ria is of great interest in the chemical industry.1 The com- bined occurrence. The Br2 Cl2 BrCl system Martin Li´sal E. Ha´la Laboratory of Thermodynamics, Institute of Chemical

  17. Charging Properties of Cassiterite (alpha-SnO2) surfaces in NaCl and RbCl Ionic Media.

    SciTech Connect (OSTI)

    Rosenqvist, Jorgen K; Machesky, Michael L.; Vlcek, Lukas; Wesolowski, David J

    2009-09-01

    The acid-base properties of cassiterite (alpha-SnO2) surfaces at 10-50 degrees C were studied using potentiometric titrations of powder suspensions in aqueous NaCl and RbCl media. The proton sorption isotherms exhibited common intersection points in the pH range of 4.0-4.5 under all conditions, and the magnitude of charging was similar but not identical in NaCl and RbCl. The hydrogen bonding configuration at the oxide-water interface, obtained from classical molecular dynamics (MD) simulations, was analyzed in detail, and the results were explicitly incorporated in calculations of protonation constants for the reactive surface sites using the revised MUSIC model. The calculations indicated that the terminal SnOH2 group is more acidic than the bridging Sn2OH group, with protonation constants (log KH) of 3.60 and 5.13 at 25 degrees C, respectively. This is contrary to the situation on the isostructural alpha-TiO2 (rutile), apparently because of the difference in electronegativity between Ti and Sn. MD simulations and speciation calculations indicated considerable differences in the speciation of Na+ and Rb+, despite the similarities in overall charging. Adsorbed sodium ions are almost exclusively found in bidentate surface complexes, whereas adsorbed rubidium ions form comparable numbers of bidentate and tetradentate complexes. Also, the distribution of adsorbed Na+ between the different complexes shows a considerable dependence on the surface charge density (pH), whereas the distribution of adsorbed Rb+ is almost independent of pH. A surface complexation model (SCM) capable of accurately describing both the measured surface charge and the MD-predicted speciation of adsorbed Na+/Rb+ was formulated. According to the SCM, the deprotonated terminal group (SnOH(-0.40)) and the protonated bridging group (Sn2OH+0.36) dominate the surface speciation over the entire pH range of this study (2.7-10). The complexation of medium cations increases significantly with increasing negative surface charge, and at pH 10, roughly 40% of the terminal sites are predicted to form cation complexes, whereas anion complexation is minor throughout the studied pH range.

  18. Charging Properties of Cassiterite (alpha-SnO2) Surfaces in NaCl and RbCl Ionic Media.

    SciTech Connect (OSTI)

    Rosenqvist, Jorgen K; Machesky, Michael L.; Vlcek, Lukas; Wesolowski, David J

    2009-09-01

    The acid-base properties of cassiterite ({alpha}-SnO{sub 2}) surfaces at 10-50 C were studied using potentiometric titrations of powder suspensions in aqueous NaCl and RbCl media. The proton sorption isotherms exhibited common intersection points in the pH range of 4.0-4.5 under all conditions, and the magnitude of charging was similar but not identical in NaCl and RbCl. The hydrogen bonding configuration at the oxide-water interface, obtained from classical molecular dynamics (MD) simulations, was analyzed in detail, and the results were explicitly incorporated in calculations of protonation constants for the reactive surface sites using the revised MUSIC model. The calculations indicated that the terminal SnOH{sub 2} group is more acidic than the bridging Sn{sub 2}OH group, with protonation constants (log K{sub H}) of 3.60 and 5.13 at 25 C, respectively. This is contrary to the situation on the isostructural {alpha}-TiO{sub 2} (rutile), apparently because of the difference in electronegativity between Ti and Sn. MD simulations and speciation calculations indicated considerable differences in the speciation of Na{sup +} and Rb{sup +}, despite the similarities in overall charging. Adsorbed sodium ions are almost exclusively found in bidentate surface complexes, whereas adsorbed rubidium ions form comparable numbers of bidentate and tetradentate complexes. Also, the distribution of adsorbed Na{sup +} between the different complexes shows a considerable dependence on the surface charge density (pH), whereas the distribution of adsorbed Rb{sup +} is almost independent of pH. A surface complexation model (SCM) capable of accurately describing both the measured surface charge and the MD-predicted speciation of adsorbed Na{sup +}/Rb{sup +} was formulated. According to the SCM, the deprotonated terminal group (SnOH{sup -0.40}) and the protonated bridging group (Sn{sub 2}OH{sup +0.36}) dominate the surface speciation over the entire pH range of this study (2.7-10). The complexation of medium cations increases significantly with increasing negative surface charge, and at pH 10, roughly 40% of the terminal sites are predicted to form cation complexes, whereas anion complexation is minor throughout the studied pH range.

  19. Wind-Turbine Gear-Box Roller-Bearing Premature-Failure Caused by Grain-Boundary Hydrogen Embrittlement

    E-Print Network [OSTI]

    Grujicic, Mica

    Wind-Turbine Gear-Box Roller-Bearing Premature-Failure Caused by Grain-Boundary Hydrogen, 2014) To help overcome the problem of horizontal-axis wind-turbine (HAWT) gear-box roller of the damage progression in, and the final failure of a prototypical HAWT gear-box roller-bearing inner raceway

  20. Regulating the ethylene response of a plant by modulation of F-box proteins

    DOE Patents [OSTI]

    Guo, Hongwei [Beijing, CN; Ecker, Joseph R [Carlsbad, CA

    2014-01-07

    The relationship between F-box proteins and proteins invovled in the ethylene response in plants is described. In particular, F-box proteins may bind to proteins involved in the ethylene response and target them for degradation by the ubiquitin/proteasome pathway. The transcription factor EIN3 is a key transcription factor mediating ethylne-regulated gene expression and morphological responses. EIN3 is degraded through a ubiquitin/proteasome pathway mediated by F-box proteins EBF1 and EBF2. The link between F-box proteins and the ethylene response is a key step in modulating or regulating the response of a plant to ethylene. Described herein are transgenic plants having an altered sensitivity to ethylene, and methods for making transgenic plant haing an althered sensitivity to ethylene by modulating the level of activity of F-box proteins. Methods of altering the ethylene response in a plant by modulating the activity or expression of an F-box protein are described. Also described are methods of identifying compounds that modulate the ethylene response in plants by modulating the level of F-box protein expression or activity.

  1. METHODOLOGY FOR THE NUMBER OF FILTERS NEEDED IN A WASTE BOX

    SciTech Connect (OSTI)

    MARUSICH, R.M.

    2007-05-17

    Waste in large waste boxes can generate volatile organic compounds (VOCs) and hydrogen. These waste boxes may or may not have flow paths out of them (although it is believed that most do). These boxes will be retrieved, sampled, and then coated with polyurea. After coating, filters will be installed in the box to keep the concentration of VOCs and hydrogen acceptably low. The MDSA requires that a vent path must be protected during application of the polyurea coating. If the box has been sampled then it is vented and the vent path must be protected. This report provides a model in which the user inputs the free volume of the waste box, sample concentration (ppm of total VOC or volume fraction hydrogen) along with the number of filters to be placed into the waste box lid. Using this information, the model provides an estimate of concentration vs. time or the number of filters needed to reduce the concentration by a specified fraction. If the equations from this report are placed into spreadsheets which are then used to demonstrate TSR compliance, the spreadsheets must come under the Software QA Plan for such documents. Chapters 2 and 3 present the theory. Chapter 4 presents the method with examples of its use found in Chapter 5. Chapter 6 provides the basis far the use of 1,000 ppm as the concentration below which the method is valid under any condition.

  2. Transuranic and Low-Level Boxed Waste Form Nondestructive Assay Technology Overview and Assessment

    SciTech Connect (OSTI)

    G. Becker; M. Connolly; M. McIlwain

    1999-02-01

    The Mixed Waste Focus Area (MWFA) identified the need to perform an assessment of the functionality and performance of existing nondestructive assay (NDA) techniques relative to the low-level and transuranic waste inventory packaged in large-volume box-type containers. The primary objectives of this assessment were to: (1) determine the capability of existing boxed waste form NDA technology to comply with applicable waste radiological characterization requirements, (2) determine deficiencies associated with existing boxed waste assay technology implementation strategies, and (3) recommend a path forward for future technology development activities, if required. Based on this assessment, it is recommended that a boxed waste NDA development and demonstration project that expands the existing boxed waste NDA capability to accommodate the indicated deficiency set be implemented. To ensure that technology will be commercially available in a timely fashion, it is recommended this development and demonstration project be directed to the private sector. It is further recommended that the box NDA technology be of an innovative design incorporating sufficient NDA modalities, e.g., passive neutron, gamma, etc., to address the majority of the boxed waste inventory. The overall design should be modular such that subsets of the overall NDA system can be combined in optimal configurations tailored to differing waste types.

  3. Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same

    DOE Patents [OSTI]

    Wrenn, G.E. Jr.; Holcombe, C.E. Jr.

    1988-09-13

    A multilayered thermal insulating composite is formed of a first layer of zirconia-bonded zirconia fibers for utilization near the hot phase or surface of a furnace or the like. A second layer of zirconia-bonded metal oxide fibers is attached to the zirconia fiber layer by a transition layer formed of intermingled zirconia fibers and metal oxide fibers. The thermal insulation is fabricated by vacuum molding with the layers being sequentially applied from aqueous solutions containing the fibers to a configured mandrel. A portion of the solution containing the fibers forming the first layer is intermixed with the solution containing the fibers of the second layer for forming the layer of mixed fibers. The two layers of fibers joined together by the transition layer are saturated with a solution of zirconium oxynitrate which provides a zirconia matrix for the composite when the fibers are sintered together at their nexi.

  4. Multilayered thermal insulation formed of zirconia bonded layers of zirconia fibers and metal oxide fibers and method for making same

    DOE Patents [OSTI]

    Wrenn, Jr., George E. (Clinton, TN); Holcombe, Jr., Cressie E. (Farragut, TN)

    1988-01-01

    A multilayered thermal insulating composite is formed of a first layer of zirconia-bonded zirconia fibers for utilization near the hot phase or surface of a furnace or the like. A second layer of zirconia-bonded metal oxide fibers is attached to the zirconia fiber layer by a transition layer formed of intermingled zirconia fibers and metal oxide fibers. The thermal insulation is fabricated by vacuum molding with the layers being sequentially applied from aqueous solutions containing the fibers to a configured mandrel. A portion of the solution containing the fibers forming the first layer is intermixed with the solution containing the fibers of the second layer for forming the layer of mixed fibers. The two layers of fibers joined together by the transition layer are saturated with a solution of zirconium oxynitrate which provides a zirconia matrix for the composite when the fibers are sintered together at their nexi.

  5. Box- and peanut-shaped bulges: I. Statistics

    E-Print Network [OSTI]

    R. Luetticke; R. -J. Dettmar; M. Pohlen

    2000-06-26

    We present a classification for bulges of a complete sample of ~1350 edge-on disk galaxies derived from the RC3 (Third Reference Catalogue of Bright Galaxies, de Vaucouleurs et al. 1991). A visual classification of the bulges using the Digitized Sky Survey (DSS) in three types of b/p bulges or as an elliptical type is presented and supported by CCD images. NIR observations reveal that dust extinction does almost not influence the shape of bulges. There is no substantial difference between the shape of bulges in the optical and in the NIR. Our analysis reveals that 45% of all bulges are box- and peanut-shaped (b/p). The frequency of b/p bulges for all morphological types from S0 to Sd is > 40%. In particular, this is for the first time that such a large frequency of b/p bulges is reported for galaxies as late as Sd. The fraction of the observed b/p bulges is large enough to explain the b/p bulges by bars.

  6. WHAT'S INSIDE THE BLACK BOX - EXPLAINING PERFORMANCE ASSESSMENT TO STAKEHOLDERS

    SciTech Connect (OSTI)

    Seitz, R; Elmer Wilhite, E

    2009-01-06

    The performance assessment (PA) process is being applied to support an increasing variety of waste management decisions that involve the whole spectrum of stakeholders. As with many technical tools, the PA process can be seen as a black box, which can be difficult to understand when implemented. Recognizing the increasing use of PA and the concerns about difficulties with understanding, the Savannah River Site Citizens Advisory Board (CAB) made a recommendation that the U.S. Department of Energy (DOE) provide a Public Educational Forum on PAs. The DOE-Headquarters Environmental Management (DOE-EM) Office of Compliance and the DOE-Savannah River (DOE-SR) responded to this recommendation by supporting the Savannah River National Laboratory (SRNL) in developing several presentation modules that can be used to describe different aspects of the PA process. For the Public Educational Forum, the PA modules were combined with presentations on DOE perspectives, historical modeling efforts at the Savannah River Site, and review perspectives from the U.S. Nuclear Regulatory Commission (NRC). The overall goals are to help the public understand how PAs are implemented and the rigor that is applied, and to provide insight into the use of PAs for waste management decision-making.

  7. Coated Fiber Neutron Detector Test

    SciTech Connect (OSTI)

    Lintereur, Azaree T.; Ely, James H.; Kouzes, Richard T.; Stromswold, David C.

    2009-10-23

    Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. The main reason for having neutron detection capability is to detect fission neutrons from plutonium. The currently deployed radiation portal monitors (RPMs) from Ludlum and Science Applications International Corporation (SAIC) use neutron detectors based upon 3He-filled gas proportional counters, which are the most common large neutron detector. There is a declining supply of 3He in the world, and thus, methods to reduce the use of this gas in RPMs with minimal changes to the current system designs and sensitivity to cargo-borne neutrons are being investigated. Reported here are the results of tests of the 6Li/ZnS(Ag)-coated non-scintillating plastic fibers option. This testing measured the required performance for neutron detection efficiency and gamma ray rejection capabilities of a system manufactured by Innovative American Technology (IAT).

  8. 2 micron femtosecond fiber laser

    DOE Patents [OSTI]

    Liu, Jian; Wan, Peng; Yang, Lihmei

    2014-07-29

    Methods and systems for generating femtosecond fiber laser pulses are disclose, including generating a signal laser pulse from a seed laser oscillator; using a first amplifier stage comprising an input and an output, wherein the signal laser pulse is coupled into the input of the first stage amplifier and the output of the first amplifier stage emits an amplified and stretched signal laser pulse; using an amplifier chain comprising an input and an output, wherein the amplified and stretched signal laser pulse from the output of the first amplifier stage is coupled into the input of the amplifier chain and the output of the amplifier chain emits a further amplified, stretched signal laser pulse. Other embodiments are described and claimed.

  9. Fiber optic D dimer biosensor

    DOE Patents [OSTI]

    Glass, R.S.; Grant, S.A.

    1999-08-17

    A fiber optic sensor for D dimer (a fibrinolytic product) can be used in vivo (e.g., in catheter-based procedures) for the diagnosis and treatment of stroke-related conditions in humans. Stroke is the third leading cause of death in the United States. It has been estimated that strokes and stroke-related disorders cost Americans between $15-30 billion annually. Relatively recently, new medical procedures have been developed for the treatment of stroke. These endovascular procedures rely upon the use of microcatheters. These procedures could be facilitated with this sensor for D dimer integrated with a microcatheter for the diagnosis of clot type, and as an indicator of the effectiveness, or end-point of thrombolytic therapy. 4 figs.

  10. Subsea fiber-optic communications

    SciTech Connect (OSTI)

    High, G.; Wright, P.J.

    1997-05-01

    High-cost and hazardous nature of recovering hydrocarbons offshore have led to the trend towards growth in subsea production control. The extended step-out distances of subsea completions is increasing the volume and complexity of subsea data communications beyond the capacity of conventional systems. Improved reservoir management using intelligent sensors, metering, and process equipment, requiring real-time monitoring and control, dictates the use of wideband communication. Fiber optics offers the necessary volume of data transmission, with the high-noise immunity needed for data integrity and safe operation, under the severe Electro-Magnetic Interference (EMI) environments created where high power motors and power cables are used subsea. The marinizing of optical, opto-electronic communication components for production control, data acquisition of subsea completions for the offshore oil industry are described.

  11. Regulating the ethylene response of a plant by modulation of F-box proteins

    DOE Patents [OSTI]

    Guo, Hongwei (Beijing, CN); Ecker, Joseph R. (Carlsbad, CA)

    2011-03-08

    The invention relates to transgenic plants having reduced sensitivity to ethylene as a result of having a recombinant nucleic acid encoding an F-box protein that interacts with a EIN3 involved in an ethylene response of plants, and a method of producing a transgenic plant with reduced ethylene sensitivity by transforming the plant with a nucleic acid sequence encoding an F-box protein. The inventions also relates to methods of altering the ethylene response in a plant by modulating the activity or expression of an F-box protein.

  12. Dynamics of flexible fibers in shear flow

    E-Print Network [OSTI]

    Agnieszka M. Slowicka; Eligiusz Wajnryb; Maria L. Ekiel-Jezewska

    2015-04-03

    Dynamics of flexible non-Brownian fibers in shear flow at low-Reynolds-number are analyzed numerically for a wide range of the ratios A of the fiber bending force to the viscous drag force. Initially, the fibers are aligned with the flow, and later they move in the plane perpendicular to the flow vorticity. A surprisingly rich spectrum of different modes is observed when the value of A is systematically changed, with sharp transitions between coiled and straightening out modes, period-doubling bifurcations from periodic to migrating solutions, irregular dynamics and chaos.

  13. Microbend fiber-optic chemical sensor

    DOE Patents [OSTI]

    Weiss, Jonathan D. (Albuquerque, NM)

    2002-01-01

    A microbend fiber-optic chemical sensor for detecting chemicals in a sample, and a method for its use, is disclosed. The sensor comprises at least one optical fiber having a microbend section (a section of small undulations in its axis), for transmitting and receiving light. In transmission, light guided through the microbend section scatters out of the fiber core and interacts, either directly or indirectly, with the chemical in the sample, inducing fluorescence radiation. Fluorescence radiation is scattered back into the microbend section and returned to an optical detector for determining characteristics of the fluorescence radiation quantifying the presence of a specific chemical.

  14. Diode pumped alkali vapor fiber laser

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2006-07-26

    A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

  15. Diode pumped alkali vapor fiber laser

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2007-10-23

    A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

  16. Predictive Engineering Tools for Injection-molded Long-Carbon-Fiber Thermoplastic Composites - FY 2014 Third Quarterly Report

    SciTech Connect (OSTI)

    Nguyen, Ba Nghiep; Sanborn, Scott E.; Mathur, Raj N.; Sharma, Bhisham; Sangid, Michael D.; Wang, Jin; Jin, Xiaoshi; Costa, Franco; Gandhi, Umesh N.; Mori, Steven; Tucker III, Charles L.

    2014-08-15

    This report describes the technical progresses made during the third quarter of FY 2014: 1) Autodesk introduced the options for fiber inlet condition to the 3D solver. These options are already available in the mid-plane/dual domain solver. 2) Autodesk improved the accuracy of 3D fiber orientation calculation around the gate. 3) Autodesk received consultant services from Prof. C.L. Tucker at the University of Illinois on the implementation of the reduced order model for fiber length, and discussed with Prof. Tucker the methods to reduce memory usage. 4) PlastiComp delivered to PNNL center-gated and edge-fan-gated 20-wt% to 30-wt% LCF/PP and LCF/PA66 (7”x7”x1/8”) plaques molded by the in-line direct injection molding (D-LFT) process. 5) PlastiComp molded ASTM tensile, flexural and impact bars under the same D-LFT processing conditions used for plaques for Certification of Assessment and ascertaining the resultant mechanical properties. 6) Purdue developed a new polishing routine, utilizing the automated polishing machine, to reduce fiber damage during surface preparation. 7) Purdue used a marker-based watershed segmentation routine, in conjunction with a hysteresis thresholding technique, for fiber segmentation during fiber orientation measurement. 8) Purdue validated Purdue’s fiber orientation measurement method using the previous fiber orientation data obtained from the Leeds machine and manually measured data by the University of Illinois. 9) PNNL conducted ASMI mid-plane analyses for a 30wt% LCF/PP plaque and compared the predicted fiber orientations with the measured data provided by Purdue University at the selected locations on this plaque. 10) PNNL put together the DOE 2014 Annual Merit Review (AMR) presentation with the team and presented it at the AMR meetings on June 17, 2014. 11) PNNL built ASMI dual domain models for the Toyota complex part and commenced mold filling analyses of the complex part with different wall thicknesses in order to support part molding. 12) Toyota and Magna discussed with PNNL on tool modification for molding the complex part. Toyota sent the CAD files of the complex part to PNNL to build ASMI models of the part for mold filling analysis to provide guidance to tooling and part molding.

  17. Effects of fiber direction on heat conduction in unidirectionally aligned fiber composites 

    E-Print Network [OSTI]

    Havis, Clark Reagan

    1987-01-01

    of MASTER OF SCIENCE December 1987 Major Subject: Mechanical Engineering EFFECTS OF FIBER DIRECTION ON HEAT CONDUCTION IN UNIDIRECTIONALLY ALIGNED FIBER COMPOSITES A Thesis CLARK REAGAN HAVIS Approved as to style and content by: G. P. Peterson... classification the fibers are woven into a fabric in which the weave occurs at predetermined angles, normally 90 . This fabric is then impregnated with a resin and stacked in layers prior to curing. This type of composite material has fairly uniform mechanical...

  18. Optical fiber pressure and acceleration sensor fabricated on a fiber endface

    DOE Patents [OSTI]

    Zhu, Yizheng; Wang, Xingwei; Xu, Juncheng; Wang, Anbo

    2006-05-30

    A fiber optic sensor has a hollow tube bonded to the endface of an optical fiber, and a diaphragm bonded to the hollow tube. The fiber endface and diaphragm comprise an etalon cavity. The length of the etalon cavity changes when applied pressure or acceleration flexes the diaphragm. The entire structure can be made of fused silica. The fiber, tube, and diaphragm can be bonded with a fusion splice. The present sensor is particularly well suited for measuring pressure or acceleration in high temperature, high pressure and corrosive environments (e.g., oil well downholes and jet engines). The present sensors are also suitable for use in biological and medical applications.

  19. The morphological and chemical characteristics of respirable mineral wool fibers 

    E-Print Network [OSTI]

    Butler, Donnie Ray

    1976-01-01

    12 17 18 18 21 23 27 38 46 REFERENCES APPENDIX A TABLE OF CONTENTS continued ~Pa e 48 PHYSICAL CHARACTERISTICS OF OBSERVED FIBERS APPENDIX B X-RAY COUNT DATA OF OBSERVED FIBERS APPENDIX C PUMP CALIBRATION APPENDIX D COATING... LIST OF FIGURES continued 16. Lengths of fibers present in the respirable sample 17. Widths of fibers present in the respirable sample 18. Ternary diagram showing the Magnesium:Silicon: Calcium ratio of the observed fibers 19. Ternary diagram...

  20. The Energy Box : comparing locally automated control strategies of residential electricity consumption under uncertainty

    E-Print Network [OSTI]

    Livengood, Daniel James

    2011-01-01

    The Energy Box is an always-on background processor automating the temporal management of one's home or small business electrical energy usage. Cost savings are achieved in a variety of environments, ranging from at pricing ...

  1. B and C class MADS-box genes and the developmental genetics of maize flower development

    E-Print Network [OSTI]

    Whipple, Clinton J.

    2006-01-01

    diversification of the two C-Class MADS box genes OSMADS32004). Conservation of B-class floral homeotic gene function2004). Conservation of B-class floral homeotic gene function

  2. Air and water flows in a large sand box with a two-layer aquifer system

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    the initial water table, the larger the vacuum, and the longer the time to reach the maximum vacuum table is close to the interface of the two layers. Keywords Sand box . Groundwater hydraulics

  3. Design and manufacture of the 2003 2.007 wireless control boxes

    E-Print Network [OSTI]

    Varady, Eric, 1980-

    2003-01-01

    A new smaller, lighter, and more durable wireless control box was designed and built for use in the 2.007 Design Contest. The new units can also be commanded by an external controller via a standard serial interface.

  4. Design of an instrumented workpart for robotic aircraft wing-box assembly

    E-Print Network [OSTI]

    Kaina, Leighton

    2006-01-01

    The idea of an underactuated robotic arm used in aircraft wing assembly and production was created to improve the wing-box assembly process. In order to display the robots capabilities and areas of improvement, a suitable ...

  5. Reliable Recovery of Piled Box-like Objects via Parabolically Deformable Superquadrics

    E-Print Network [OSTI]

    and generic depalletizing systems stems pri- marily from the car and food industries. Such systems and piled box-like objects. A vacuum gripper is used for grasping the objects from their exposed surfaces

  6. Cavity-nesting Bird Use of Nest Boxes in Vineyards of Central-Coast California1

    E-Print Network [OSTI]

    Cavity-nesting Bird Use of Nest Boxes in Vineyards of Central-Coast California1 Daniel P. Mummert,2, Robertson and Rendell 1990), lower predation rates (Nilsson 1984, Purcell and others 1997, Robertson

  7. Simple multistage closed-(box+reservoir) models of chemical evolution: an application to the inner Galactic halo

    E-Print Network [OSTI]

    Caimmi, R

    2010-01-01

    Simple closed-box (CB) models of chemical evolution are extended on two respects: (i) simple closed-(box+reservoir) (CBR) models allowing gas outflow from the box into the reservoir or gas inflow into the box from the reservoir with same composition as the preexisting gas and rate proportional to the star formation rate, and (ii) simple multistage closed-(box+reservoir) (MCBR) models allowing different stages of evolution characterized by different inflow or outflow rates. The stellar initial mass function is assumed to be universal, and mass conservation holds for the whole system (box+reservoir) while it is violated for each subsystem (box and reservoir). The theoretical differential oxygen abundance distribution (TDOD) predicted by the model, under the assumption of instantaneous recycling, is a continuous broken line, where different slopes are related to different inflow rates. For an application of the model (a) a fictitious sample is built up from two distinct samples and taken as representative of the...

  8. Distributed Light Sensing with Convex Potential Fibers

    E-Print Network [OSTI]

    Sorin, Fabien

    We report on a photoconductive fiber that supports decaying and convex electrical potential profiles capable of localizing a point of illumination, and propose a scheme to perform distributed optical sensing.

  9. Structural retrofitting using fiber reinforced polymers

    E-Print Network [OSTI]

    Dumas, Pierre, M. Eng. Massachusetts Institute of Technology

    2012-01-01

    Over the past decades, fiber reinforced polymers (FRP) have been widely used in the aeronautical and naval industries. Being more costly than conventional Civil Engineering materials such as steel or concrete, they have ...

  10. Fiber coupled optical spark delivery system

    DOE Patents [OSTI]

    Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO)

    2008-08-12

    A spark delivery system for generating a spark using a laser beam is provided, the spark delivery system including a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. In addition, the laser delivery assembly includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. In accordance with embodiments of the present invention, the assembly may be used to create a spark in a combustion engine. In accordance with other embodiments of the present invention, a method of using the spark delivery system is provided. In addition, a method of choosing an appropriate fiber for creating a spark using a laser beam is also presented.

  11. Fiber laser coupled optical spark delivery system

    DOE Patents [OSTI]

    Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO); Joshi, Sachin (Fort Collins, CO); Reynolds, Adam (Fort Collins, CO)

    2008-03-04

    A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.

  12. Fiber gasket and method of making same

    DOE Patents [OSTI]

    Bruck, Gerald Joseph (Murrysville, PA); Alvin, Mary Anne (Pittsburgh, PA); Smeltzer, Eugene E. (Export, PA)

    2003-01-01

    A gasket (1) is made by repetitively spirally winding a fiber (3) back on itself in a closed path. The gasket (1) so made has a multi-layer spiral winding (1) formed in a loop (5). The fiber (3) can be wound at a constant wrap rate to form a gasket with a uniform cross-section around the loop. Alternatively, the wrap rate can be varied, increased to increase cross-sectional bulk, and decreased to reduce cross-section bulk around the loop (5). Also, the spiral winding (7) can be applied over a core (13) of either strands of the fiber (3) or a dissimilar material providing a desired property such as resiliency, stiffness or others. For high temperature applications, a ceramic fiber (3) can be used. The gasket (1) can have any of various geometric configurations with or without a core (13).

  13. Temperature compensated two-mode fiber interferometer 

    E-Print Network [OSTI]

    Doma, Jagdish Ramchandra

    1993-01-01

    In this thesis we propose an innovative approach of designing and implementing a temperature compensated two-mode optical fiber interferometer in a control system of stabilizing the wavelength of a laser. We give the procedure for designing...

  14. Trapping cold rubidium in a fiber

    E-Print Network [OSTI]

    Brown, David Ross, S.B. Massachusetts Institute of Technology

    2007-01-01

    In this thesis, we demonstrate the novel technique of loading cold ??Rb into a red-detuned optical dipole trap within a hollow core photonic fiber. This confines the atoms to 6 microns in two dimensions. We initially cooled ...

  15. Letter box line blackener for the HDTV/conventional-analog hybrid system

    DOE Patents [OSTI]

    Wysocki, Frederick J.; Nickel, George H.

    2006-07-18

    A blackener for letter box lines associated with a HDTV/conventional-analog hybrid television transmission where the blackener counts horizontal sync pulses contained in the HDTV/conventional-analog hybrid television transmission and determines when the HDTV/conventional-analog hybrid television transmission is in letter-box lines: if it is, then the blackener sends substitute black signal to an output; and if it is not, then the blackener sends the HDTV/conventional-analog hybrid television transmission to the output.

  16. Ammonia fiber explosion (AFEX) treatment of grass 

    E-Print Network [OSTI]

    Ashok, Ganesh

    1991-01-01

    AMMONIA FIBER EXPLOSION (AFEX) TREATMENT OF GRASS A Thesis by GANESH ASHOK 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 December 1991... Major Subject: Chemical Engineering AMMONIA FIBER EXPLOSION (AFEX) TREATMENT OF GRASS A Thesis by GANESH ASHOK Approved as to style and content by: M. T. 1 e (Chair of Committee) R. W. Flumerfelt (Member) F. M, By (Membe C. R. Engler (Member...

  17. Optical fiber sensor technique for strain measurement

    DOE Patents [OSTI]

    Butler, Michael A. (Albuquerque, NM); Ginley, David S. (Albuquerque, NM)

    1989-01-01

    Laser light from a common source is split and conveyed through two similar optical fibers and emitted at their respective ends to form an interference pattern, one of the optical fibers having a portion thereof subjected to a strain. Changes in the strain cause changes in the optical path length of the strain fiber, and generate corresponding changes in the interference pattern. The interference pattern is received and transduced into signals representative of fringe shifts corresponding to changes in the strain experienced by the strained one of the optical fibers. These signals are then processed to evaluate strain as a function of time, typical examples of the application of the apparatus including electrodeposition of a metallic film on a conductive surface provided on the outside of the optical fiber being strained, so that strains generated in the optical fiber during the course of the electrodeposition are measurable as a function of time. In one aspect of the invention, signals relating to the fringe shift are stored for subsequent processing and analysis, whereas in another aspect of the invention the signals are processed for real-time display of the strain changes under study.

  18. Fiber optic probe for light scattering measurements

    DOE Patents [OSTI]

    Nave, Stanley E. (Evans, GA); Livingston, Ronald R. (Aiken, SC); Prather, William S. (Augusta, GA)

    1995-01-01

    A fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration of an analyte of interest are to be detected, and a sample is admitted into the chamber. Exciting light is transmitted into the sample chamber by the first fiber, where the light interacts with the sample to produce Raman-scattered light. At least some of the Raman-scattered light is received by the second fiber and transmitted to the detector for analysis. Two Raman spectra are measured, at different pressures. The first spectrum is subtracted from the second to remove background effects, and the resulting sample Raman spectrum is compared to a set of stored library spectra to determine the presence and concentration of the analyte.

  19. Fiber optic probe for light scattering measurements

    DOE Patents [OSTI]

    Nave, S.E.; Livingston, R.R.; Prather, W.S.

    1993-01-01

    This invention is comprised of a fiber optic probe and a method for using the probe for light scattering analyses of a sample. The probe includes a probe body with an inlet for admitting a sample into an interior sample chamber, a first optical fiber for transmitting light from a source into the chamber, and a second optical fiber for transmitting light to a detector such as a spectrophotometer. The interior surface of the probe carries a coating that substantially prevents non-scattered light from reaching the second fiber. The probe is placed in a region where the presence and concentration of an analyte of interest are to be detected, and a sample is admitted into the chamber. Exciting light is transmitted into the sample chamber by the first fiber, where the light interacts with the sample to produce Raman-scattered light. At least some of the Raman- scattered light is received by the second fiber and transmitted to the detector for analysis. Two Raman spectra are measured, at different pressures. The first spectrum is subtracted from the second to remove background effects, and the resulting sample Raman spectrum is compared to a set of stored library spectra to determine the presence and concentration of the analyte.

  20. Examination of a Junction-Box Adhesion Test for Use in Photovoltaic Module Qualification: Preprint

    SciTech Connect (OSTI)

    Miller, D. C.; Wohlgemuth, J. H.

    2012-08-01

    Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development. There are historical incidences of adverse effects (e.g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp heat' IEC qualification test is proposed to verify the basic robustness of its adhesion system. The details of the proposed test will be described, in addition to the preliminary results obtained using representative materials and components. The described discovery experiments examine moisture-cured silicone, foam tape, and hot-melt adhesives used in conjunction with PET or glass module 'substrates.' To be able to interpret the results, a set of material-level characterizations was performed, including thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. PV j-boxes were adhered to a substrate, loaded with a prescribed weight, and then placed inside an environmental chamber (at 85C, 85% relative humidity). Some systems did not remain attached through the discovery experiments. Observed failure modes include delamination (at the j-box/adhesive or adhesive/substrate interface) and phase change/creep. The results are discussed in the context of the application requirements, in addition to the plan for the formal experiment supporting the proposed modification to the qualification test.

  1. On the Role of Metal Contaminants in Catalyses with FeCl

    E-Print Network [OSTI]

    Bolm, Carsten

    Warning: Catalyzed N-, O-, and C-arylation reactions ascribed to FeCl3 can instead result from catalysis by trace quantities of copper salts.

  2. polyurethane foam Goods, S.H.; Neuschwanger, C.L.; Henderson...

    Office of Scientific and Technical Information (OSTI)

    Mechanical properties and energy absorption characteristics of a polyurethane foam Goods, S.H.; Neuschwanger, C.L.; Henderson, C.; Skala, D.M. 36 MATERIALS SCIENCE; FOAMS;...

  3. The effect of irregular fiber distribution and error in assumed transverse fiber CTE on thermally induced fiber/matrix interfacial stresses 

    E-Print Network [OSTI]

    Zu, Seung-Don

    2006-08-16

    Thermally induced interfacial stress states between fiber and matrix at cryogenic temperature were studied using three-dimensional finite element based micromechanics. Mismatch of the coefficient of thermal expansion between fiber and matrix...

  4. Formation and applications of nanoparticles in silica optical fibers

    E-Print Network [OSTI]

    Blanc, Wilfried

    2015-01-01

    Optical fibers are the basis for applications that have grown considerably in recent years (telecommunications, sensors, fiber lasers, etc). Despite undeniable successes, it is necessary to develop new generations of amplifying optical fibers that will overcome some limitations typical of silica glass. In this sense, the amplifying Transparent Glass Ceramics (TGC), and particularly the fibers based on this technology, open new perspectives that combine the mechanical and chemical properties of a glass host with the augmented spectroscopic properties of embedded nanoparticles. This paper is an opportunity to make a state of the art on silica-based optical fibers containing nanoparticles of various types, particularly rare-earth-doped oxide nanoparticles, and on the methods for making such fibers. In the first section of this article, we will review basics on standard optical fibers and on nanoparticle-doped fibers. In the second section we will recall some fabrication methods used for standard optical fibers, ...

  5. Soft capacitor fibers using conductive polymers for electronic textiles

    E-Print Network [OSTI]

    Gu, Jian Feng; Skorobogatiy, Maksim

    2010-01-01

    A novel, highly flexible, conductive polymer-based fiber with high electric capacitance is reported. In its crossection the fiber features a periodic sequence of hundreds of conductive and isolating plastic layers positioned around metallic electrodes. The fiber is fabricated using fiber drawing method, where a multi-material macroscopic preform is drawn into a sub-millimeter capacitor fiber in a single fabrication step. Several kilometres of fibers can be obtained from a single preform with fiber diameters ranging between 500um -1000um. A typical measured capacitance of our fibers is 60-100 nF/m and it is independent of the fiber diameter. For comparison, a coaxial cable of the comparable dimensions would have only ~0.06nF/m capacitance. Analysis of the fiber frequency response shows that in its simplest interrogation mode the capacitor fiber has a transverse resistance of 5 kOhm/L, which is inversely proportional to the fiber length L and is independent of the fiber diameter. Softness of the fiber materials...

  6. Mechanical Analysis of the Fuel Assembly Box of a HPLWR Fuel Assembly

    SciTech Connect (OSTI)

    Himmel, Steffen; Starflinger, Joerg; Schulenberg, Thomas; Hofmeister, Jan

    2006-07-01

    The aim of the work presented in this paper is to demonstrate that the assembly box of the fuel assembly for a HPLWR proposed by Hofmeister et al. will remain mechanically within the design limits. The commercial finite element code ANSYS has been used to investigate the deformation behaviour caused by thermal convective and pressure boundary conditions provided by the results from Waata et al. for the fuel assembly. The results of these ANSYS analyses show a bending of the assembly box caused by the applied temperature and pressure distribution which, however, is still within the geometrical allowances. The maximum bending of the 4.35 m long assembly box appears close to the mid section, i.e. at 2.45 m axial height, and amounts to about 2 mm, only. The maximum indentation is mainly caused by the pressure difference across the box wall and occurs near the top of the assembly. The indentation at this point can be evaluated to be around 0.2 mm. Both bending and indentation will influence the coolant mass flux and the moderator distribution, and thus needs to be considered for predictions of the power profile and of the coolant heat-up. They are not considered to be critical as long as these deformations are small compared with the nominal gap width of 1 mm between box wall and claddings and 10 mm between adjacent assembly boxes. A second analysis has been performed to study the effect on non-symmetric coolant temperature profiles. A coolant temperature increase by 30 deg. C on one side of the box increased the thermal bending to 4 mm, indicating the sensitivity of this design with respect to temperature non-uniformities. (authors)

  7. Activated carbon fibers and engineered forms from renewable resources

    DOE Patents [OSTI]

    Baker, Frederick S.

    2010-06-01

    A method of producing activated carbon fibers (ACFs) includes the steps of providing a natural carbonaceous precursor fiber material, blending the carbonaceous precursor material with a chemical activation agent to form chemical agent-impregnated precursor fibers, spinning the chemical agent-impregnated precursor material into fibers, and thermally treating the chemical agent-impregnated precursor fibers. The carbonaceous precursor material is both carbonized and activated to form ACFs in a single step. The method produces ACFs exclusive of a step to isolate an intermediate carbon fiber.

  8. Activated carbon fibers and engineered forms from renewable resources

    DOE Patents [OSTI]

    Baker, Frederick S

    2013-02-19

    A method of producing activated carbon fibers (ACFs) includes the steps of providing a natural carbonaceous precursor fiber material, blending the carbonaceous precursor material with a chemical activation agent to form chemical agent-impregnated precursor fibers, spinning the chemical agent-impregnated precursor material into fibers, and thermally treating the chemical agent-impregnated precursor fibers. The carbonaceous precursor material is both carbonized and activated to form ACFs in a single step. The method produces ACFs exclusive of a step to isolate an intermediate carbon fiber.

  9. Fast Marching farthest point sampling Carsten Moenning (cm230@cl.cam.ac.uk)

    E-Print Network [OSTI]

    Dodgson, Neil

    Fast Marching farthest point sampling Carsten Moenning (cm230@cl.cam.ac.uk) Neil A. Dodgson (nad@cl.cam.ac.uk) Introduction We introduce the Fast Marching farthest point sampling (FastFPS) approach for the progressive sampling of planar domains and curved manifolds in triangulated, point cloud or implicit form. We use Fast

  10. Surface organization of aqueous MgCl2 and application to atmospheric marine

    E-Print Network [OSTI]

    Surface organization of aqueous MgCl2 and application to atmospheric marine aerosol chemistry Nadia) Inorganic salts in marine aerosols play an active role in atmospheric chemistry, particularly in coastalCl2 surfaces as models of marine aerosol. Spectroscopy results reveal that the disturbance

  11. UPTAKE OF RADIONUCLIDE METALS BY SPME FIBERS

    SciTech Connect (OSTI)

    Duff, M; S Crump, S; Robert02 Ray, R; Keisha Martin, K; Donna Beals, D

    2006-08-28

    The Federal Bureau of Investigation (FBI) Laboratory currently does not have on site facilities for handling radioactive evidentiary materials and there are no established FBI methods or procedures for decontaminating high explosive (HE) and fire debris (FD) evidence while maintaining evidentiary value. One experimental method for the isolation of HE and FD residue involves using solid phase microextraction or SPME fibers to remove residue of interest. Due to their high affinity for organics, SPME fibers should have little affinity for most metals. However, no studies have measured the affinity of radionuclides for SPME fibers. The focus of this research was to examine the affinity of dissolved radionuclide ({sup 239/240}Pu, {sup 238}U, {sup 237}Np, {sup 85}Sr, {sup 133}Ba, {sup 137}Cs, {sup 60}Co and {sup 226}Ra) and stable radionuclide surrogate metals (Sr, Co, Ir, Re, Ni, Ba, Cs, Nb, Zr, Ru, and Nd) for SPME fibers at the exposure conditions that favor the uptake of HE and FD residues. Our results from radiochemical and mass spectrometric analyses indicate these metals have little measurable affinity for these SPME fibers during conditions that are conducive to HE and FD residue uptake with subsequent analysis by liquid or gas phase chromatography with mass spectrometric detection.

  12. Concentric core optical fiber with multiple-mode signal transmission

    DOE Patents [OSTI]

    Muhs, J.D.

    1997-05-06

    A concentric core optical fiber provides for the simultaneous but independent transmission of signals over a single optical fiber. The concentric optical fiber is constructed of a single-mode or multimode inner optical fiber defined by a core and a cladding of a lower index of refraction than the core and an outer optical fiber defined by additional cladding concentrically disposed around the cladding and of an index of refraction lower than the first mentioned cladding whereby the latter functions as the core of the outer optical fiber. By employing such an optical fiber construction with a single-mode inner core or optical fiber, highly sensitive interferometric and stable less sensitive amplitude based sensors can be placed along the same length of a concentric core optical fiber. Also, by employing the concentric core optical fiber secure telecommunications can be achieved via the inner optical fiber since an intrusion of the concentric optical fiber will first cause a variation in the light being transmitted through the outer optical fiber and this variation of light being used to trigger a suitable alarm indicative of the intrusion. 3 figs.

  13. CREOL Affiliates Day Presentation: 7th March 2014 A brief history of fiber lasers

    E-Print Network [OSTI]

    Van Stryland, Eric

    fibers has been critical to help grow fiber laser market · Multiple suppliers of the same standard DC fiber design (Snitzer et al.) 1988. · Ybdoped fiber lasers proposed as a viable alternative to Nddoped

  14. Gas Storage Potential of Li-decorated ExBox4+

    E-Print Network [OSTI]

    Das, Ranjita

    2014-01-01

    The newly developed compound ExBox4+ is explored to check whether it is a proficient hydrogen storage material. Both exoherdal and endohedral hydrogen adsorption on ExBox4+ are studied. Endohedral hydrogen molecules interact strongly than exohedral ones. The hydrogen adsorption energy is as good as the recently studied charged fullerenes. The hydrogen storage capacity appears to be ~4.3 wt%. The endohedral CO sorption is also analysed with the help of DFT. The first principle DFT calculation and MD simulation are performed to investigate the effect of lithium doping on the gas adsorbing capacity and adsorption enthalpy as well as adsorption energy of ExBox4+.The metal atom interaction with ExBox4+is found to be pretty strong, and the interaction energy appears to be higher than the metal cohesive energy.The thermodynamic parameters suggest that metal doping method is spontaneous in nature. The analysis of adsorption energy, thermodynamic properties and MD simulation results suggest that Li doped ExBox4+ can b...

  15. Trial Run of a Junction-Box Attachment Test for Use in Photovoltaic Module Qualification (Presentation)

    SciTech Connect (OSTI)

    Miller, D.; Deibert, S.; Wohlgemuth, J.

    2014-06-01

    Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development and manufacturing process control. There are historical incidences of adverse effects (e.g., fires), caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp-heat', 'thermal-cycle', or 'creep' tests within the IEC qualification protocol is proposed to verify the basic robustness of the adhesion system. The details of the proposed test are described, in addition to a trial run of the test procedure. The described experiments examine 4 moisture-cured silicones, 4 foam tapes, and a hot-melt adhesive used in conjunction with glass, KPE, THV, and TPE substrates. For the purpose of validating the experiment, j-boxes were adhered to a substrate, loaded with a prescribed weight, and then subjected to aging. The replicate mock-modules were aged in an environmental chamber (at 85 deg C/85% relative humidity for 1000 hours; then 100 degrees C/<10% relative humidity for 200 hours) or fielded in Golden, Miami, and Phoenix for 1 year. Attachment strength tests, including pluck and shear test geometries, were also performed on smaller component specimens.

  16. CARBON FIBER COMPOSITES IN HIGH VOLUME

    SciTech Connect (OSTI)

    Warren, Charles David; Das, Sujit; Jeon, Dr. Saeil

    2014-01-01

    Vehicle lightweighting represents one of several design approaches that automotive and heavy truck manufacturers are currently evaluating to improve fuel economy, lower emissions, and improve freight efficiency (tons-miles per gallon of fuel). With changes in fuel efficiency and environmental regulations in the area of transportation, the next decade will likely see considerable vehicle lightweighting throughout the ground transportation industry. Greater use of carbon fiber composites and light metals is a key component of that strategy. This paper examines the competition between candidate materials for lightweighting of heavy vehicles and passenger cars. A 53-component, 25 % mass reduction, body-in-white cost analysis is presented for each material class, highlighting the potential cost penalty for each kilogram of mass reduction and then comparing the various material options. Lastly, as the cost of carbon fiber is a major component of the elevated cost of carbon fiber composites, a brief look at the factors that influence that cost is presented.

  17. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

    Groves, S.E.; Deteresa, S.J.

    1998-07-14

    An interlayer toughening mechanism is described to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0{degree} to 90{degree} to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles. 2 figs.

  18. Interlayer toughening of fiber composite flywheel rotors

    DOE Patents [OSTI]

    Groves, Scott E. (Brentwood, CA); Deteresa, Steven J. (Livermore, CA)

    1998-01-01

    An interlayer toughening mechanism to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0.degree. to 90.degree. to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles.

  19. Simulations of carbon fiber composite delamination tests

    SciTech Connect (OSTI)

    Kay, G

    2007-10-25

    Simulations of mode I interlaminar fracture toughness tests of a carbon-reinforced composite material (BMS 8-212) were conducted with LSDYNA. The fracture toughness tests were performed by U.C. Berkeley. The simulations were performed to investigate the validity and practicality of employing decohesive elements to represent interlaminar bond failures that are prevalent in carbon-fiber composite structure penetration events. The simulations employed a decohesive element formulation that was verified on a simple two element model before being employed to perform the full model simulations. Care was required during the simulations to ensure that the explicit time integration of LSDYNA duplicate the near steady-state testing conditions. In general, this study validated the use of employing decohesive elements to represent the interlaminar bond failures seen in carbon-fiber composite structures, but the practicality of employing the elements to represent the bond failures seen in carbon-fiber composite structures during penetration events was not established.

  20. Carbon Fiber Damage in Particle Beam

    E-Print Network [OSTI]

    Dehning, B; Kroyer, T; Meyer, M; Sapinski, M

    2011-01-01

    Carbon fibers are commonly used as moving targets in beam wire scanners. The heating of the fiber due to energy loss of the particles travelling through is simulated with Geant4. The heating induced by the beam electromagnetic field is estimated with ANSYS. The heat transfer and sublimation processes are modelled. Due to the model nonlinearity, a numerical approach based on discretization of the wire movement is used to solve it for particular beams. Radiation damage to the fiber is estimated with SRIM. The model is tested with available SPS and LEP data and a dedicated damage test on the SPS beam is performed followed by a post-mortem analysis of the wire remnants. Predictions for the LHC beams are made.

  1. Hot Springs-Garrison Fiber Optic Project

    SciTech Connect (OSTI)

    Not Available

    1994-10-01

    Bonneville Power Administration (BPA) is proposing to upgrade its operational telecommunications system between the Hot Springs Substation and the Garrison Substation using a fiber optic system. The project would primarily involve installing 190 kilometers (120 miles) of fiber optic cable on existing transmission structures and installing new fiber optic equipment in BPA`s substation yards and control houses. BPA prepared an environmental assessment (EA) evaluating the proposed action. This EA was published in October 1994. The EA identifies a number of minor impacts that might occur as a result of the proposed action, as well as some recommended mitigation measures. This Mitigation Action Plan (MAP) identifies specific measures to avoid, minimize, or compensate for impacts identified in the EA.

  2. Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber...

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

    Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece Poster presented at the 16th Directions...

  3. Higher-order mode suppression in chalcogenide negative curvature fibers

    E-Print Network [OSTI]

    Maryland, Baltimore County, University of

    . Søndergaard, and A. Bjarklev, "Analysis of air-guiding photonic bandgap fibers," Opt. Lett. 25(2), 96­98 (2000, "Leakage loss and bandgap analysis in air-core photonic bandgap fiber for nonsilica glasses," Opt. Express

  4. Natural fiber reinforced aerated concrete : an experimental investigation

    E-Print Network [OSTI]

    Garbis, Leonidia Maria

    2013-01-01

    The purpose of this study is to compare existing research with aerated concrete and fiber reinforcement to original experiments completed investigating the benefits of adding natural fiber tensile reinforcement to aerated ...

  5. Fiber Sizing Sensor and Controller | Department of Energy

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

    sample size is large and usually consists of hundreds of fibers. FibrSizr consists of a laser instrument developed for the accurate real-time and in-situ determination of fiber...

  6. Wood-Fiber/High-Density-Polyethylene Composites: Compounding Process

    E-Print Network [OSTI]

    Wood-Fiber/High-Density-Polyethylene Composites: Compounding Process J. Z. Lu,1 Q. Wu,1 I. I parameters for the wood-fiber/high-density-polyethylene blends at 60 rpm were a temperature of 180°C

  7. Distributed fiber optic intrusion sensor system for monitoring long perimeters 

    E-Print Network [OSTI]

    Juarez, Juan C.

    2009-06-02

    A distributed sensor using an optical fiber for detecting and locating intruders over long perimeters (>10 km) is described. Phase changes resulting from either the pressure of the intruder on the ground immediately above the buried fiber or from...

  8. Boll and fiber development in long staple upland cotton 

    E-Print Network [OSTI]

    Braden, Chris Alan

    2001-01-01

    contributes to reduced yield and reduced fiber length, thus minimizing the profitability for the grower and the competitiveness of the fiber for the textile industry. For dryland cotton to remain a viable commodity for Texas producers its quality properties...

  9. 18-1165-29AA selectingHollow Fiber

    E-Print Network [OSTI]

    Lebendiker, Mario

    18-1165-29AA selectingHollow Fiber Cartridges and Systems #12;#12;introduction About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 chapter 1 - Selecting a hollow fiber cross flow membrane cartridge Introduction . . . . . . . . . . . . . 12 Cartridge selection illustrated with process examples

  10. Optimal Design Refrigeration System for a Mucilage Glue Fiber Factory 

    E-Print Network [OSTI]

    Tan, C.; Liu, J.; Tang, F.; Liu, Y.

    2006-01-01

    In a mucilage glue fiber factory, the design of the refrigeration system takes into account the characteristics of mucilage glue fiber production and fully uses the refrigeration compressor heat to economize energy and reduce the production cost...

  11. Intrinsic Fabry-Perot optical fiber sensors and their multiplexing

    DOE Patents [OSTI]

    Wang, Anbo (Blacksburg, VA)

    2007-12-11

    An intrinsic Fabry-Perot optical sensor includes a thin film sandwiched between two fiber ends. When light is launched into the fiber, two reflections are generated at the two fiber/thin film interfaces due to a difference in refractive indices between the fibers and the film, giving rise to the sensor output. In another embodiment, a portion of the cladding of a fiber is removed, creating two parallel surfaces. Part of the evanescent fields of light propagating in the fiber is reflected at each of the surfaces, giving rise to the sensor output. In a third embodiment, the refractive index of a small portion of a fiber is changed through exposure to a laser beam or other radiation. Interference between reflections at the ends of the small portion give rise to the sensor output. Multiple sensors along a single fiber are multiplexed using an optical time domain reflectometry method.

  12. Guidance Document Glove boxes allow the user to perform operations in an atmosphere different from the ambient. Gloves

    E-Print Network [OSTI]

    in Metallurgy). This second type of glove box is designed to contain a high purity inert atmosphere (e.g. argon

  13. Fiber optic mounted laser driven flyer plates

    SciTech Connect (OSTI)

    Paisley, Dennis L.

    1991-01-01

    A laser driven flyer plate where the flyer plate is deposited directly onto the squared end of an optical fiber. The plasma generated by a laser pulse drives the flyer plate toward a target. In another embodiment, a first metal layer is deposited onto the squared end of an optical fiber, followed by a layer of a dielectric material and a second metal layer. The laser pulse generates a plasma in the first metal layer, but the plasma is kept away from the second metal layer by the dielectric layer until the pressure reaches the point where shearing occurs.

  14. Fiber optic mounted laser driven flyer plates

    SciTech Connect (OSTI)

    Paisley, D.L.

    1990-12-31

    This invention is comprised of a laser driven flyer plate where the flyer plate is deposited directly onto the squared end of an optical fiber. The plasma generated by a laser pulse drives the flyer plate toward a target. In another embodiment, a first metal layer is deposited onto the squared end of an optical fiber, followed by a layer of a dielectric material and a second metal layer. The laser pulse generates a plasma in the first metal layer, but the plasma is kept away from the second metal layer by the dielectric layer until the pressure reaches the point where shearing occurs. 2 figs.

  15. Fiber optic mounted laser driven flyer plates

    SciTech Connect (OSTI)

    Paisley, D.L.

    1991-07-09

    A laser driven flyer plate is described where the flyer plate is deposited directly onto the squared end of an optical fiber. The plasma generated by a laser pulse drives the flyer plate toward a target. In another embodiment, a first metal layer is deposited onto the squared end of an optical fiber, followed by a layer of a dielectric material and a second metal layer. The laser pulse generates a plasma in the first metal layer, but the plasma is kept away from the second metal layer by the dielectric layer until the pressure reaches the point where shearing occurs.

  16. Fiber optic mounted laser driven flyer plates

    SciTech Connect (OSTI)

    Paisley, D.L.

    1990-01-01

    This invention is comprised of a laser driven flyer plate where the flyer plate is deposited directly onto the squared end of an optical fiber. The plasma generated by a laser pulse drives the flyer plate toward a target. In another embodiment, a first metal layer is deposited onto the squared end of an optical fiber, followed by a layer of a dielectric material and a second metal layer. The laser pulse generates a plasma in the first metal layer, but the plasma is kept away from the second metal layer by the dielectric layer until the pressure reaches the point where shearing occurs. 2 figs.

  17. Fiber-optic displacement sensor system 

    E-Print Network [OSTI]

    Cava, Norayda Nora

    1990-01-01

    FIBER-OPTIC DISPLACEMENT SENSOR SYSTEM A Thesis by NORAYDA NORA CAVA 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 1990 Major Subject...: Electrical Engineering FIBER-OPTIC DISPLACEMENT SENSOR SYSTEM A Thesis by NORAYDA NORA CAVA Approved as to style and content by: H nry F. Taylor (Chair of Committee) Brian Y ng (Member) Raghve n ey ( ember) Sohi Rastegar (Member) Jo owze (Head...

  18. Manufacture of thermoelectric generator structures by fiber drawing

    DOE Patents [OSTI]

    McIntyre, Timothy J; Simpson, John T; West, David L

    2014-11-18

    Methods of manufacturing a thermoelectric generator via fiber drawing and corresponding or associated thermoelectric generator devices are provided.

  19. Energy localization in nonlinear fiber arrays: Collapse-effect compressor

    SciTech Connect (OSTI)

    Aceves, A.B.; Luther, G.G.; De Angelis, C.; Turitsyn, S.K.

    1995-07-03

    We analyze a collapse mechanism of energy localization in nonlinear fiber arrays. The nonlinear fiber array is suggested as a device to amplify and compress optical pulses. Pulse propagation in one-dimensional fiber arrays has features of collapse (self-focusing) dynamics. Collapse-type compression leads to the localization of all energy initially dispersed in array into a few fibers. Numerical simulations demonstrate the robustness of the suggested compression mechanism.

  20. Fiber optically isolated and remotely stabilized data transmission system

    DOE Patents [OSTI]

    Nelson, Melvin A. (Santa Barbara, CA)

    1992-01-01

    A fiber optically isolated and remotely stabilized data transmission system s described wherein optical data may be transmitted over an optical data fiber from a remote source which includes a data transmitter and a power supply at the remote source. The transmitter may be remotely calibrated and stabilized via an optical control fiber, and the power source may be remotely cycled between duty and standby modes via an optical control fiber.

  1. Fiber optically isolated and remotely stabilized data transmission system

    DOE Patents [OSTI]

    Nelson, M.A.

    1992-11-10

    A fiber optically isolated and remotely stabilized data transmission systems described wherein optical data may be transmitted over an optical data fiber from a remote source which includes a data transmitter and a power supply at the remote source. The transmitter may be remotely calibrated and stabilized via an optical control fiber, and the power source may be remotely cycled between duty and standby modes via an optical control fiber. 3 figs.

  2. Fiber-optical analogue of the event horizon: Appendices

    E-Print Network [OSTI]

    Thomas G. Philbin; Chris Kuklewicz; Scott Robertson; Stephen Hill; Friedrich Konig; Ulf Leonhardt

    2007-12-13

    We explain the theory behind our fiber-optical analogue of the event horizon and present the experiment in detail.

  3. Characterization of carbon fibers: coefficient of thermal expansion and microstructure 

    E-Print Network [OSTI]

    Kulkarni, Raghav Shrikant

    2006-04-12

    and transverse CTE. The orthotropy in the CTE is tested by rotating the fibers through 45? about their axis. The method is validated by testing standard tungsten filaments of known CTE. Additionally, the microstructure of the fibers is studied in a field... strain vs. temperature for tungsten................................... 40 Figure 3.3 Strain vs. temperature for P55 fiber.................................................... 42 Figure 3.4 Cross sectional images of IM7 fibers failed in bending...

  4. Long period fiber gratings induced by mechanical resonance

    E-Print Network [OSTI]

    Shahal, Shir; Duadi, Hamootal; Fridman, Moti

    2015-01-01

    We present a simple, and robust method for writing long period fiber gratings with low polarization dependent losses. Our method is based on utilizing mechanical vibrations of the tapered fiber while pooling it. Our method enables real-time tunability of the periodicity, efficiency and length of the grating. We also demonstrate complex grating by writing multiple gratings simultaneously. Finally, we utilized the formation of the gratings in different fiber diameters to investigate the Young's modulus of the fiber.

  5. Communication Electric polarization in carbon fiber-reinforced cement

    E-Print Network [OSTI]

    Chung, Deborah D.L.

    Communication Electric polarization in carbon fiber-reinforced cement Sihai Wen, D.D.L. Chung-reinforced cement paste during resistivity measurement. The effect was diminished by increasing the conductivity of the cement paste through the use of carbon fibers that were more crystalline, the increase of the fiber

  6. Effective Splices for a Carbon Fiber-Reinforced Polymer

    E-Print Network [OSTI]

    r Effective Splices for a Carbon Fiber-Reinforced Polymer Strengthening System for Steel Bridges and Structures Mina Dawood. Murthy GUddati. and Sami Rizkalla Carbon fiber-reinforced polymer (CFRP) materials to strengthen steel bridges and structures. Fiber-reinforced polymer (FRP) materials have been successfully used

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

    E-Print Network [OSTI]

    Wadley, Haydn

    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 carbon fiber braids and Divinycell H250 polymer foam trapezoids. These have been stitched to 3D woven

  8. STABILITY PROPERTIES OF LIGHT PROPAGATING IN FIBER OPTICS

    E-Print Network [OSTI]

    Kasman, Alex

    STABILITY PROPERTIES OF LIGHT PROPAGATING IN FIBER OPTICS ST´EPHANE LAFORTUNE Summary The study is crucial in applications such as lasers and optical fibers. In this proposal I will focus on a model of fiber optics: the Manakov system. This system consists of two differential equations, that is two

  9. EFFECTS OF FIBER WAVINESS ON COMPOSITES FOR WIND TURBINE BLADES

    E-Print Network [OSTI]

    EFFECTS OF FIBER WAVINESS ON COMPOSITES FOR WIND TURBINE BLADES J.F. Mandell D.D. Samborsky and L Composite materials of interest for wind turbine blades use relatively low cost fibers, resins and processes WORDS: Composite Materials, Fiber Waviness, Compressive Strength #12;1. INTRODUCTION Wind turbine blades

  10. Thermal Decomposition of Natural Fibers: Global Kinetic Modeling with Nonisothermal

    E-Print Network [OSTI]

    with consideration of fiber as one pseudocomponent. Ma´lek method with activation energy values previously obtainedThermal Decomposition of Natural Fibers: Global Kinetic Modeling with Nonisothermal.interscience.wiley.com). ABSTRACT: The modeling of thermal decomposition process of ten natural fibers commonly used in polymer

  11. Thermal Phenomena in Fiber-reinforced Thermoplastic Tape Winding Process

    E-Print Network [OSTI]

    Daraio, Chiara

    Thermal Phenomena in Fiber-reinforced Thermoplastic Tape Winding Process: Computational Simulations-reinforced thermoplastic tapes, thermal simulation, convective coefficient of gas torches, fiber-reinforced thermoplastic a pre-impregnated fiber-reinforced thermoplastic tape is bounded on-line to the substrate. The bonding

  12. A study of micro fiber dispersion using digital image analysis 

    E-Print Network [OSTI]

    Hendrarsakti, Jooned

    2004-11-15

    of this dissertation is to investigate the use of texture analysis as a tool to micro fiber dispersion measurement. Micro fiber dispersion can be found in many applications such as in paper and industry powder engineering. Three cases related to micro fiber...

  13. The sup 36 Cl ages of the brines in the Magadi-Natron basin, east Africa

    SciTech Connect (OSTI)

    Kaufman, A.; Margaritz, M.A.; Hollos, G. ); Paul, M.; Boaretto, E. ); Hillaire-Marcel, C. ); Taieb, M. )

    1990-10-01

    The depression in the East African Rift which includes both Lake Magadi and Lake Natron forms a closed basin within which almost all the dissolved chloride originates in precipitation, since there is no important source of very ancient sedimentary chloride. This provides an ideal setting for the evaluation of the {sup 36}Cl methodology as a geochemical and hydrological tracer. The main source of recent water, as represented by the most dilute samples measured, is characterized by a {sup 36}Cl/Cl ratio of 2.5 {times} 10{sup {minus}14}, in agreement with the calculated value expected in precipitation. Surface evaporation increases the chlorinity of the local freshwater inflow by about a factor of 110 without changing the isotopic ratio, indicating that little chloride enters the system in the form of sediment leachate. A second type of brine found in the basin occurs in a hot deep groundwater reservoir and is characterized by lower {sup 36}Cl/Cl ratios (<1.2 {times} 10{sup {minus}14}). By comparing this value with the 2.5 {times} 10{sup {minus}14} in recent recharge, one obtains an approximate salt accumulation age of 760 Ka which is consistent with thee time of the first appearance of the lake. These older brines also have lower {sup 18}O and {sup 2}H values which indicate that they were recharged during a climatically different era. The {sup 36}Cl/Cl ratios in the inflowing waters and in the accumulated brine, together with the known age of the Lake Magadi basin, may be used to estimate the importance of the hypogene and epigene, as opposed to the meteoric, mode of {sup 36}Cl production. Such a calculation shows that the hypogene and epigene processes together contribute less than 6% of the total {sup 36}Cl present in the lake.

  14. Method for the continuous processing of hermetic fiber optic components and the resultant fiber optic-to-metal components

    DOE Patents [OSTI]

    Kramer, Daniel P. (Centerville, OH)

    1994-08-09

    Hermetic fiber optic-to-metal components and method for making hermetic fiber optic-to-metal components by assembling and fixturing elements comprising a metal shell, a glass preform, and a metal-coated fiber optic into desired relative positions and then sealing said fixtured elements preferably using a continuous heating process. The resultant hermetic fiber optic-to-metal components exhibit high hermeticity and durability despite the large differences in thermal coefficients of expansion among the various elements.

  15. Singlet-Triplet Splittings in CX2 (X ) F, Cl, Br, I) Dihalocarbenes via Negative Ion Photoelectron Spectroscopy

    E-Print Network [OSTI]

    Lineberger, W. Carl

    Singlet-Triplet Splittings in CX2 (X ) F, Cl, Br, I) Dihalocarbenes via Negative Ion Photoelectron2, and CI2. In addition to the long list of theoretical studies on CX2 (X ) F, Cl, Br, I

  16. New 34Cl proton-threshold states and the thermonuclear 33S(p,gamma)34Cl rate in ONe novae

    E-Print Network [OSTI]

    A. Parikh; T. Faestermann; R. Hertenberger; R. Kruecken; D. Schafstadler; H. -F. Wirth; T. Behrens; V. Bildstein; S. Bishop; K. Eppinger; C. Herlitzius; C. Hinke; M. Schlarb; D. Seiler; K. Wimmer

    2009-06-19

    Analysis of presolar grains in primitive meteorites has shown isotopic ratios largely characteristic of the conditions thought to prevail in various astrophysical environments. A possible indicator for a grain of ONe nova origin is a large 33S abundance: nucleosynthesis calculations predict as much as 150 times the solar abundance of 33S in the ejecta of nova explosions on massive ONe white dwarfs. This overproduction factor may, however, vary by factors of at least 0.01 - 3 because of uncertainties of several orders of magnitude in the 33S(p,gamma)34Cl reaction rate at nova peak temperatures (Tpeak ~ 0.1 - 0.4 GK). These uncertainties arise due to the lack of nuclear physics information for states within ~ 600 keV of the 33S+p threshold in 34Cl (Sp(34Cl) = 5143 keV). To better constrain this rate we have measured, for the first time, the 34S(3He,t)34Cl reaction over the region Ex(34Cl) = 4.9 - 6 MeV. We confirm previous states and find 15 new states in this energy region. New 33S(p,gamma)34Cl resonances at ER = 281(2), 301(2) and 342(2) keV may dominate this rate at relevant nova temperatures. Our results could affect predictions of sulphur isotopic ratios in nova ejecta (e.g., 32S/33S) that may be used as diagnostic tools for the nova paternity of grains.

  17. Single-fiber multi-color pyrometry

    DOE Patents [OSTI]

    Small, IV, Ward; Celliers, Peter

    2004-01-27

    This invention is a fiber-based multi-color pyrometry set-up for real-time non-contact temperature and emissivity measurement. The system includes a single optical fiber to collect radiation emitted by a target, a reflective rotating chopper to split the collected radiation into two or more paths while modulating the radiation for lock-in amplification (i.e., phase-sensitive detection), at least two detectors possibly of different spectral bandwidths with or without filters to limit the wavelength regions detected and optics to direct and focus the radiation onto the sensitive areas of the detectors. A computer algorithm is used to calculate the true temperature and emissivity of a target based on blackbody calibrations. The system components are enclosed in a light-tight housing, with provision for the fiber to extend outside to collect the radiation. Radiation emitted by the target is transmitted through the fiber to the reflective chopper, which either allows the radiation to pass straight through or reflects the radiation into one or more separate paths. Each path includes a detector with or without filters and corresponding optics to direct and focus the radiation onto the active area of the detector. The signals are recovered using lock-in amplification. Calibration formulas for the signals obtained using a blackbody of known temperature are used to compute the true temperature and emissivity of the target. The temperature range of the pyrometer system is determined by the spectral characteristics of the optical components.

  18. Single-fiber multi-color pyrometry

    DOE Patents [OSTI]

    Small, IV, Ward (Livermore, CA); Celliers, Peter (Berkeley, CA)

    2000-01-01

    This invention is a fiber-based multi-color pyrometry set-up for real-time non-contact temperature and emissivity measurement. The system includes a single optical fiber to collect radiation emitted by a target, a reflective rotating chopper to split the collected radiation into two or more paths while modulating the radiation for lock-in amplification (i.e., phase-sensitive detection), at least two detectors possibly of different spectral bandwidths with or without filters to limit the wavelength regions detected and optics to direct and focus the radiation onto the sensitive areas of the detectors. A computer algorithm is used to calculate the true temperature and emissivity of a target based on blackbody calibrations. The system components are enclosed in a light-tight housing, with provision for the fiber to extend outside to collect the radiation. Radiation emitted by the target is transmitted through the fiber to the reflective chopper, which either allows the radiation to pass straight through or reflects the radiation into one or more separate paths. Each path includes a detector with or without filters and corresponding optics to direct and focus the radiation onto the active area of the detector. The signals are recovered using lock-in amplification. Calibration formulas for the signals obtained using a blackbody of known temperature are used to compute the true temperature and emissivity of the target. The temperature range of the pyrometer system is determined by the spectral characteristics of the optical components.

  19. Special fiber elements for thermal analysis

    E-Print Network [OSTI]

    Qin, Qinghua

    of this paper is to present a new special element model for thermal analysis of composites. Design analysis, Hybrid FEM, Fundamental solution, Special inclusion element, Representative volume cell Paper type Research paper 1. Introduction Fiber-reinforced composites (Chung, 1994) are structural materials

  20. Fiber metal interlayer improves ceramic coating performance

    SciTech Connect (OSTI)

    Jarrabet, G.P.

    1994-11-01

    This article is a review of the use of a compliant fiber metal inner layer between a ceramic coating and metal. The material used is Zirconia with phase stabilizers of magnesium oxide, calcium oxide, and yttrium oxide. Design, fabrication, and testing of the stabilized zirconia is discussed.

  1. Long glass fiber orientation in thermoplastic composites using a model that accounts for the flexibility of the fibers

    E-Print Network [OSTI]

    Wapperom, Peter

    Long glass fiber orientation in thermoplastic composites using a model that accounts Mechanical properties of long glass fiber composites, used in various industrial applications, are dependant are explored to predict the orientation of long glass fibers in the concentrated regime that take the flexible

  2. Special purpose modes in photonic band gap fibers

    DOE Patents [OSTI]

    Spencer, James; Noble, Robert; Campbell, Sara

    2013-04-02

    Photonic band gap fibers are described having one or more defects suitable for the acceleration of electrons or other charged particles. Methods and devices are described for exciting special purpose modes in the defects including laser coupling schemes as well as various fiber designs and components for facilitating excitation of desired modes. Results are also presented showing effects on modes due to modes in other defects within the fiber and due to the proximity of defects to the fiber edge. Techniques and devices are described for controlling electrons within the defect(s). Various applications for electrons or other energetic charged particles produced by such photonic band gap fibers are also described.

  3. Fiber-bragg grating-loop ringdown method and apparatus

    SciTech Connect (OSTI)

    Wang, Chuji

    2008-01-29

    A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

  4. Determination of mechanisms by which soluble fibers lower serum cholesterol 

    E-Print Network [OSTI]

    Sun, Xiao-Qing

    1991-01-01

    differ between fibers. We tested the efi'ect of five fiber sources on serum and liver cholesterol and hepatic cholesterol biosynthesis. Also, we tested the effect of fiber sources on fecal neutral sterol and bile acid excretion. Six groups of 12... Sprague Dawley rats were each fed either a fiber-free (FF) cholesterol and cholic acid supplemented diet or the same diet uniformly diluted by the addition of 8% dietary fiber from cellulose (C), pectin (P), oat bran (OB), whole amaranth (WA...

  5. Method of producing a hybrid matrix fiber composite

    DOE Patents [OSTI]

    Deteresa, Steven J. (Livermore, CA); Lyon, Richard E. (Absecon, NJ); Groves, Scott E. (Brentwood, CA)

    2006-03-28

    Hybrid matrix fiber composites having enhanced compressive performance as well as enhanced stiffness, toughness and durability suitable for compression-critical applications. The methods for producing the fiber composites using matrix hybridization. The hybrid matrix fiber composites comprised of two chemically or physically bonded matrix materials, whereas the first matrix materials are used to impregnate multi-filament fibers formed into ribbons and the second matrix material is placed around and between the fiber ribbons that are impregnated with the first matrix material and both matrix materials are cured and solidified.

  6. Method for enhancing signals transmitted over optical fibers

    DOE Patents [OSTI]

    Ogle, James W. (Goleta, CA); Lyons, Peter B. (Whiterock, NM)

    1983-01-01

    A method for spectral equalization of high frequency spectrally broadband signals transmitted through an optical fiber. The broadband signal input is first dispersed by a grating. Narrow spectral components are collected into an array of equalizing fibers. The fibers serve as optical delay lines compensating for material dispersion of each spectral component during transmission. The relative lengths of the individual equalizing fibers are selected to compensate for such prior dispersion. The output of the equalizing fibers couple the spectrally equalized light onto a suitable detector for subsequent electronic processing of the enhanced broadband signal.

  7. FUNCTIONAL ADHESIVENESS OF THE CX3CL1 CHEMOKINE REQUIRES ITS AGGREGATION: ROLE OF THE TRANSMEMBRANE DOMAIN*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    FUNCTIONAL ADHESIVENESS OF THE CX3CL1 CHEMOKINE REQUIRES ITS AGGREGATION: ROLE OF THE TRANSMEMBRANE: CX3CL1 clustering Address correspondence to: Philippe Deterre, Laboratoire Immunologie Cellulaire Paris. FAX: +33 (0)1 40 77 97 34; E-mail: deterre@ccr.jussieu.fr In its native form, the chemokine CX3CL

  8. A Fundamental Study on the [(?-Cl)3Mg2(THF)6]+ Dimer Electrolytes for Rechargeable Mg Batteries

    SciTech Connect (OSTI)

    Liu, Tianbiao L.; Cox, Jonathan T.; Hu, Dehong; Deng, Xuchu; Hu, Jian Z.; Hu, Mary Y.; Xiao, Jie; Shao, Yuyan; Tang, Keqi; Liu, Jun

    2015-01-01

    We present a fundamental study on [(?-Cl)3Mg2(THF)6]+dimer electrolytes using various physical methods including Subambient Pressure Ionization with Nanoelectrospray Mass spectrometry (SPIN-MS), Raman spectroscopy, 25Mg{1H} NMR, 27Al{1H} NMR and electrochemical analysis. For the first time, long time sought THF solvated [MgCl]+ species was experimentally characterized by SPIN mass spectrometry in the solution of the Mgdimer containing electrolyte, confirming the mono-Cl- abstraction reaction between MgCl2 and an Al Lewis acid. Solvated MgCl2 in the electrolyte was confirmed by Raman spectroscopy. The experimental results establish the previously proposed dimerization equilibrium of solvated [MgCl]+ and MgCl2 with [(?-Cl)3Mg2(THF)6]+. 25Mg{1H} NMR, 27Al{1H} NMR and electrochemical analysis on chloration reaction of [(?-Cl)3Mg2(THF)6]AlPh3Cl with external Cl- led to further insights on the coordination chemistry of the dimer electrolyte. Finally, a comprehensive mechanism is proposed for the reversible electrochemical Mg deposition and stripping and Mg2+ and Cl- ion transports of the Mg dimer electrolytes in rechargeable Mg batteries.

  9. Metal matrix coated fiber composites and the methods of manufacturing such composites

    DOE Patents [OSTI]

    Weeks, Jr., Joseph K. (Salt Lake City, UT); Gensse, Chantal (Salt Lake City, UT)

    1993-01-01

    A fiber coating which allows ceramic or metal fibers to be wetted by molten metals is disclosed. The coating inhibits degradation of the physical properties caused by chemical reaction between the fiber and the coating itself or between the fiber and the metal matrix. The fiber coating preferably includes at least a wetting layer, and in some applications, a wetting layer and a barrier layer between the fiber and the wetting layer. The wetting layer promotes fiber wetting by the metal matrix. The barrier layer inhibits fiber degradation. The fiber coating permits the fibers to be infiltrated with the metal matrix resulting in composites having unique properties not obtainable in pure materials.

  10. HumanWildlife Interactions 5(1):100105, Spring 2011 A rat-resistant artificial nest box for

    E-Print Network [OSTI]

    to the island of Kauai, Hawaii. The sole population of about 500 birds is currently restricted to remote, higher, Hawaii Field Station, P.O. Box 10880, Hilo, HI 96721, USA will.pitt@aphis.usda.gov LAURA C. DRISCOLL, USDA/APHIS/Wildlife Services' National Wildlife Research Center, Hawaii Field Station, P.O. Box 10880

  11. Petteri Harjulehto, Department of Mathematics and Statistics, P.O. Box 4, FIN-00014 University of Helsinki, Finland

    E-Print Network [OSTI]

    Hasto, Peter

    of Helsinki, Finland (petteri.harjulehto@helsinki.fi) Peter H¨ast¨o, Department of Mathematics and Statistics, P.O. Box 4, FIN-00014 University of Helsinki, Finland (peter.hasto@helsinki.fi) Mikko Pere, Department of Mathematics and Statistics, P.O. Box 4, FIN-00014 University of Helsinki, Finland (mikko

  12. *Corresponding author. Department of Biology, University of Crete, P.O. Box 2208, GR-71409 Heraklion, Crete, Greece.

    E-Print Network [OSTI]

    Petratos, Kyriacos

    Heraklion, Crete, Greece. Tel.: #30-81-394455; fax: #30-81-394351. E-mail address: kokkinid@imbb.forth.gr (M of Crete, P.O. Box 2208, GR-71110 Heraklion, Crete, Greece Institute of Molecular Biology and Biotechnology (IMBB), P.O. Box 1527, GR-71110 Heraklion, Crete, Greece Faculty of Pharmaceutical Sciences, Chiba

  13. VERIFICATION OF A FINITE ELEMENT MODEL OF AN UNMANNED AERIAL VEHICLE WING TORQUE BOX VIA EXPERIMENTAL MODAL TESTING

    E-Print Network [OSTI]

    Yaman, Yavuz

    VERIFICATION OF A FINITE ELEMENT MODEL OF AN UNMANNED AERIAL VEHICLE WING TORQUE BOX VIA Aeronautical Association, Faculty of Aeronautics and Astronautics, TURKEY KEYWORDS Unmanned Aerial Vehicle Wing (FEM) of an unmanned aerial vehicle wing torque box was verified by the experimental modal testing

  14. Learning from history: Adaptive calibration of 'tilting spine' fiber positioners

    E-Print Network [OSTI]

    Gilbert, James

    2015-01-01

    This paper discusses a new approach for determining the calibration parameters of independently-actuated optical fibers in multi-object astronomical fiber positioning systems. This work comes from the development of a new type of piezoelectric motor intended to enhance the 'tilting spine' fiber positioning technology originally created by the Australian Astronomical Observatory. Testing has shown that the motor's performance can vary depending on the fiber's location within its accessible field, meaning that an individual fiber is difficult calibrate with a one-time routine. Better performance has resulted from constantly updating calibration parameters based on the observed movements of the fiber during normal closed-loop positioning. Over time, location-specific historical data is amassed that can be used to better predict the results of a future fiber movement. This is similar to a technique previously proposed by the Australian Astronomical Observatory, but with the addition of location-specific learning....

  15. Fiber optic moisture sensor with moisture-absorbing reflective target

    DOE Patents [OSTI]

    Kirkham, Randy R. (Richland, WA)

    1987-01-01

    A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

  16. Parking Citation Appeal UVA Parking and Transportation, P.O. Box 400000, Charlottesville, Va. 229044000

    E-Print Network [OSTI]

    Acton, Scott

    UNACCEPTABLE GROUNDS FOR APPEAL ARE: Parking for SHORT periods, parking in a nearly empty lot, not knowing Parking Citation Appeal UVA Parking and Transportation, P.O. Box 400000, Charlottesville, Va. 229044000 (434)9247231 Office: 1101 Millmont Street, Charlottesville, Va. 22904 www.virginia.edu/parking

  17. Fast 3D Triangle-Box Overlap Testing Tomas Akenine-Moller

    E-Print Network [OSTI]

    acceptance/rejection tests early on, and then testing each triangle edge for intersection with the cube faces. They also use fast acceptance/rejectance tests, but recast the testing of an edge against the cubeFast 3D Triangle-Box Overlap Testing Tomas Akenine-M¨oller Department of Computer Engineering

  18. DEVELOPMENT OF A NEW GLOVE FOR GLOVE BOXES WITH HIGH-LEVEL PERFORMANCES

    SciTech Connect (OSTI)

    Blancher, J.; Poirier, J.M.

    2003-02-27

    This paper describes the results of a joint technological program of COGEMA and MAPA to develop a new generation of glove for glove boxes. The mechanical strength of this glove is twice as high as the best characteristics of gloves available on the market. This new generation of product has both a higher level of performance and better ergonomics.

  19. On the Occurrence of Thermal Runaway in Diode in the J-Box

    Broader source: Energy.gov [DOE]

    This PowerPoint presentation, focused on the environmental testing of diodes, was originally presented at the International PV Module Quality Assurance Forum on Feb. 26-27, 2013 in Denver, CO. It details the thermal runaway tests of J-boxes and discusses the Tj measurement method for bypass diodes. The presentation wraps up with a discussion of the team's anticipated next steps.

  20. Probabilistic Analysis of Onion Routing in a Black-box [Extended Abstract

    E-Print Network [OSTI]

    --Distributed applications General Terms Algorithms, Security, Theory Keywords Anonymity, onion routing, Tor A full version-1-59593-883-1/07/0010 ...$5.00. 1. INTRODUCTION Every day, thousands of people use the onion-routing net- work Tor [6Probabilistic Analysis of Onion Routing in a Black-box Model [Extended Abstract] Joan Feigenbaum

  1. Down the borehole but outside the box: innovative approaches to wireline log data interpretation

    E-Print Network [OSTI]

    Bodin, Thomas

    Down the borehole but outside the box: innovative approaches to wireline log data interpretation or more different properties, with depth down a borehole. They are routinely correlated with, and, such as oil and gas, wireline log interpretation is highly developed. In other industries, such as geothermal

  2. The Recursive NanoBox Processor Grid: A Reliable System Architecture for Unreliable Nanotechnology Devices

    E-Print Network [OSTI]

    Minnesota, University of

    The Recursive NanoBox Processor Grid: A Reliable System Architecture for Unreliable Nanotechnology, Minneapolis, MN 55455 Telephone: 612-625-5007 Fax: 612-625-4583 Abstract Advanced molecular nanotechnology designed for fabrication with unreliable nanotechnology devices. This architecture is composed of many

  3. A Grey-Box Approach to Automated Mechanism Design (Extended Abstract)

    E-Print Network [OSTI]

    Parsons, Simon

    A Grey-Box Approach to Automated Mechanism Design (Extended Abstract) Jinzhong Niu, Kai Cai auction mechanisms using the framework of the TAC Market Design Game and relates the performance that the strongest mechanisms we found using this approach are able to win the Market Design Game against known

  4. Black-Box Identification for PLC based MPC of a Binary Distillation Column

    E-Print Network [OSTI]

    Black-Box Identification for PLC based MPC of a Binary Distillation Column B. Huyck ,, F. Logist J is to upgrade the control system with a linear MPC running on a PLC. However, before a model based controller can be used on a PLC, an accurate (but simple) process model has to be constructed. Hence, the aim

  5. Philadelphia University P.O. Box (1) Philadelphia University 19392 Jordan

    E-Print Network [OSTI]

    [1/3] Philadelphia University P.O. Box (1) Philadelphia University 19392 Jordan Fax Number: +962-mail Address : mmahafzah@philadelphia.edu.j Curriculum Vitae Dr. Mohammed Mahafzah Associate Professor Faculty of Information Technology, Philadelphia University, Jordan. Responsibilities include teaching

  6. Hanford Workers Achieve Success in Difficult Glove Box Project at Plutonium Finishing Plant

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. – EM’s Richland Operations Office and contractor CH2M HILL Plateau Remediation Company (CH2M HILL) recently finished safely separating three glove boxes for removal from Hanford’s Plutonium Finishing Plant (PFP) after months of planning and preparation.

  7. Comparisons of box model calculations and measurements of formaldehyde from the 1997 North Atlantic Regional Experiment

    E-Print Network [OSTI]

    Comparisons of box model calculations and measurements of formaldehyde from the 1997 North Atlantic October 2001; accepted 16 November 2001; published 18 April 2002. [1] Formaldehyde (CH2O) measurements: formaldehyde, photochemical modeling, aircraft measurements, North Atlantic troposphere 1. Introduction [2

  8. Opening the Black Box: Low-dimensional dynamics in high-dimensional

    E-Print Network [OSTI]

    Columbia University

    it on three high-dimensional RNN examples: a 3-bit flip-flop device, an input- dependent sine wave generator temporally complex input- output relationships, input-dependent pattern generation, or autonomous patternOpening the Black Box: Low-dimensional dynamics in high-dimensional recurrent neural networks David

  9. AUTOMATIC MAPMAKING Dept of Mathematics, Lund Inst. of Technology, Box 118, S-221 00 Lund, Sweden

    E-Print Network [OSTI]

    Lunds Universitet

    AUTOMATIC MAPMAKING K. STR M Dept of Mathematics, Lund Inst. of Technology, Box 118, S-221 00 Lund, Sweden Abstract. In this paper the problem of automatic mapmaking is treated. The principles- tonomous vehicles; automatic surveying 1. INTRODUCTION Generation of a model of the environment

  10. Uranium Watch 76 South Main Street, # 7 | P.O. Box 344

    E-Print Network [OSTI]

    Uranium Watch 76 South Main Street, # 7 | P.O. Box 344 Moab, Utah 84532 435-26O-8384, May 2, 2014. Dear Mr. Rosnick: REQUEST FOR EXTENSION OF TIME TO SUBMIT COMMENTS Uranium Watch requests Rosnick/EPA 2 June 10, 2014 1 http://www.radiationcontrol.utah.gov/Uranium_Mills/uraniumone/docs/2012

  11. Smart Home in a Box: A Large Scale Smart Home Deployment

    E-Print Network [OSTI]

    Cook, Diane J.

    B) Project. The upcoming SHiB Project targets building 100 smart homes in several kinds of living spacesSmart Home in a Box: A Large Scale Smart Home Deployment Aaron S. CRANDALL a and Diane J. COOK a,1 a School of Electrical Engineering and Computer Science, Washington State University, USA Abstract. Smart

  12. University Library Box 19497 817-272-3000 www.uta.edu/library/

    E-Print Network [OSTI]

    Texas at Arlington, University of

    University Library Box 19497 · 817-272-3000 · www.uta.edu/library/ The UT Arlington Library includes the Central Library, two branch libraries (Architecture and Fine Arts, Science and Engineering) two electronic libraries (Business and Social Work) and the Library Collection Depository

  13. Evaluation of the Effect of Different Modified Atmosphere Packaging Box Liners on the

    E-Print Network [OSTI]

    Crisosto, Carlos H.

    that the use of MAP box liners is recommended to improve market life of `Friar' plums up to 45 days cold with different permeabilities to oxygen and carbon dioxide to pro- long the shelf life of fruit and vegeta- bles and Shelf Life of `Friar' Plums Celia M. Canti´n1 , Carlos H. Crisosto2,4 , and Kevin R. Day3 ADDITIONAL

  14. Technical task plan for testing filter box sorbent-paint filter test

    SciTech Connect (OSTI)

    Kilpatrick, L.L.

    1993-09-01

    At the Savannah River Plant, High Level Waste Engineering (HLWE) asked Interim Waste Technology (IWT) to choose and test a sorbent to add to the ITP filter box that meets the EPA requirement for land disposal of containerized liquid hazardous wastes per Paint Filter Liquids (PFL) test method 9095. This report outlines the process to be used in accomplishing this task.

  15. INTERNATIONAL ATOMIC ENERGY AGENCY Wagramer Strasse 5, P.O. Box 100

    E-Print Network [OSTI]

    always driven human development. New technologies in energy production, starting from the use of fireINTERNATIONAL ATOMIC ENERGY AGENCY Wagramer Strasse 5, P.O. Box 100 A-1400 Vienna, Austria www Germany (page 10,11,15), ORNL Oak Ridge National Laboratory USA (page 6), IAEA Archives Vienna (page 8

  16. "BLUE BOX" POWER ELECTRONICS CONTROL MODULES FOR LABORATORY-BASED EDUCATION

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    for Electric Machinery and Electromechanics Department of Electrical and Computer Engineering University. L. CHAPMAN CEME-TR-2004-02 June 2004 Grainger Center for Electric Machinery and Electromechanics of design documents detailing the design and fabrication of "blue box" power electronics control modules

  17. Building America Technology Solutions for New and Existing Homes: New Insights for Improving the Designs of Flexible Duct Junction Boxes (Fact Sheet)

    Office of Energy Efficiency and Renewable Energy (EERE)

    IBACOS explored the relationships between pressure and physical configurations of flexible duct junction boxes by using computational fluid dynamics simulations to predict individual box parameters and total system pressure, thereby ensuring improved HVAC performance.

  18. JOURNAL DE PHYSIQUE Colloque Cl, suppl6ment au n02, Tome 47, f6vrie-r 1986 page cl-703

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    fibres de carbone, Sic ou A1203. Abstract - The introduction of continuous fibers in a ceramic matrix concerning their processing and mechanical behavior are still imperfectly understood. This is particularly CERAMIC-CERAMIC COMPOSITE MATERIALS PROCESSING AND PROPERTIES R. NASLAIN Laboratoire de Chirnie du Solide

  19. Magnetomechanically induced long period fiber gratings

    SciTech Connect (OSTI)

    Causado-Buelvas, Jesus D.; Gomez-Cardona, Nelson D.; Torres, Pedro

    2008-04-15

    In this work, we report a simple, flexible method to create long period fiber gratings mechanically by controlling the repulsion/attraction force between two magnets that pressing a plate with a periodic array of small glass cylinders to a short length of optical fiber. Via the photoelastic effect, the pressure points induce the required periodic refractive index modulation to create the LPFG. We found that the induced device exhibits spectral characteristics similar to those of other types of LPFG. As the optical properties of LPFGs are directly related to the nature of the applied perturbations, we show, to our knowledge for the frrst time, how is the evolution of birefringence effects in mechanically induced LPFGs.

  20. Fiber-optic shock position sensor

    SciTech Connect (OSTI)

    Weiss, J.D.

    1993-03-01

    This report describes work performed for the development of a fiber-optic shock position sensor used to measure the location of a shock front in the neighborhood of a nuclear explosion. Such a measurement would provide a hydrodynamic determination of nuclear yield. The original proposal was prompted by the Defense Nuclear Agency's interest in replacing as many electrical sensors as possible with their optical counterparts for the verification of a treaty limiting the yield of a nuclear device used in underground testing. Immunity to electromagnetic pulse is the reason for the agency's interest; unlike electrical sensors and their associated cabling, fiber-optic systems do not transmit to the outside world noise pulses from the device containing secret information.

  1. Photonic bandgap narrowing in conical hollow core Bragg fibers

    SciTech Connect (OSTI)

    Ozturk, Fahri Emre; Yildirim, Adem; Kanik, Mehmet; Bayindir, Mehmet

    2014-08-18

    We report the photonic bandgap engineering of Bragg fibers by controlling the thickness profile of the fiber during the thermal drawing. Conical hollow core Bragg fibers were produced by thermal drawing under a rapidly alternating load, which was applied by introducing steep changes to the fiber drawing speed. In conventional cylindrical Bragg fibers, light is guided by omnidirectional reflections from interior dielectric mirrors with a single quarter wave stack period. In conical fibers, the diameter reduction introduced a gradient of the quarter wave stack period along the length of the fiber. Therefore, the light guided within the fiber encountered slightly smaller dielectric layer thicknesses at each reflection, resulting in a progressive blueshift of the reflectance spectrum. As the reflectance spectrum shifts, longer wavelengths of the initial bandgap cease to be omnidirectionally reflected and exit through the cladding, which narrows the photonic bandgap. A narrow transmission bandwidth is particularly desirable in hollow waveguide mid-infrared sensing schemes, where broadband light is coupled to the fiber and the analyte vapor is introduced into the hollow core to measure infrared absorption. We carried out sensing simulations using the absorption spectrum of isopropyl alcohol vapor to demonstrate the importance of narrow bandgap fibers in chemical sensing applications.

  2. Method for optical and mechanically coupling optical fibers

    DOE Patents [OSTI]

    Toeppen, John S. (Livermore, CA)

    1996-01-01

    A method and apparatus for splicing optical fibers. A fluorescing solder glass frit having a melting point lower than the melting point of first and second optical fibers is prepared. The solder glass frit is then attached to the end of the first optical fiber and/or the end of the second optical fiber. The ends of the optical fibers are aligned and placed in close proximity to each other. The solder glass frit is then heated to a temperature which is lower than the melting temperature of the first and second optical fibers, but which is high enough to melt the solder glass frit. A force is applied to the first and second optical fibers pushing the ends of the fibers towards each other. As the solder glass flit becomes molten, the layer of molten solder glass is compressed into a thin layer between the first and second optical fibers. The thin compressed layer of molten solder glass is allowed to cool such that the first and second optical fibers are bonded to each other by the hardened layer of solder glass.

  3. Low-Cost Fiber Optic Pressure Sensor

    DOE Patents [OSTI]

    Sheem, Sang K. (Pleasanton, CA)

    2004-05-18

    The size and cost of fabricating fiber optic pressure sensors is reduced by fabricating the membrane of the sensor in a non-planar shape. The design of the sensors may be made in such a way that the non-planar membrane becomes a part of an air-tight cavity, so as to make the membrane resilient due to the air-cushion effect of the air-tight cavity. Such non-planar membranes are easier to make and attach.

  4. Low-Cost Fiber Optic Pressure Sensor

    DOE Patents [OSTI]

    Sheem, Sang K. (Pleasanton, CA)

    2003-07-22

    The size and cost of fabricating fiber optic pressure sensors is reduced by fabricating the membrane of the sensor in a non-planar shape. The design of the sensors may be made in such a way that the non-planar membrane becomes a part of an air-tight cavity, so as to make the membrane resilient due to the air-cushion effect of the air-tight cavity. Such non-planar membranes are easier to make and attach.

  5. Ternary liquid scintillator for optical fiber applications

    DOE Patents [OSTI]

    Franks, Larry A. (Santa Barbara, CA); Lutz, Stephen S. (Santa Barbara, CA)

    1982-01-01

    A multicomponent liquid scintillator solution for use as a radiation-to-light converter in conjunction with a fiber optic transmission system. The scintillator includes a quantity of 5-amino-9-diethylaminobenz (a) phenoxazonium nitrate (Nile Blue Nitrate) as a solute in a fluor solvent such as benzyl alcohol. The use of PPD as an additional solute is also disclosed. The system is controllable by addition of a suitable quenching agent, such as phenol.

  6. Liquid scintillators for optical fiber applications

    DOE Patents [OSTI]

    Franks, Larry A. (Santa Barbara, CA); Lutz, Stephen S. (Santa Barbara, CA)

    1982-01-01

    A multicomponent liquid scintillator solution for use as a radiation-to-light converter in conjunction with a fiber optic transmission system. The scintillator includes a quantity of 1, 2, 4, 5, 3H, 6H, 1 OH, tetrahydro-8-trifluoromethyl (1) benzopyrano (9, 9a, 1-gh) quinolizin-10-one (Coumarin) as a solute in a fluor solvent such as benzyl alcohol or pseudo-cumene. The use of BIBUQ as an additional or primary solute is also disclosed.

  7. Transferring Capital Equipment To Surplus First you need to find the asset you wish to surplus. On the Main Menu screen under the Lookup and Maintenance box

    E-Print Network [OSTI]

    . On the Main Menu screen under the Lookup and Maintenance box in the middle of the screen look under

  8. Full Scale Coated Fiber Neutron Detector Measurements

    SciTech Connect (OSTI)

    Kouzes, Richard T.; Ely, James H.; Erikson, Luke E.; Kernan, Warnick J.; Stromswold, David C.; Woodring, Mitchell L.

    2010-03-17

    Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. The main reason for having neutron detection capability is to detect fission neutrons from plutonium. The currently deployed radiation portal monitors (RPMs) from Ludlum and Science Applications International Corporation (SAIC) use neutron detectors based upon 3He-filled gas proportional counters, which are the most common large neutron detector. There is a declining supply of 3He in the world, and thus, methods to reduce the use of this gas in RPMs with minimal changes to the current system designs and sensitivity to cargo-borne neutrons are being investigated. Four technologies have been identified as being currently commercially available, potential alternative neutron detectors to replace the use of 3He in RPMs. These technologies are: 1) Boron trifluoride (BF3)-filled proportional counters, 2) Boron-lined proportional counters, 3) Lithium-loaded glass fibers, and 4) Coated non-scintillating plastic fibers. Reported here are the results of tests of the full-scale 6Li/ZnS(Ag)-coated non-scintillating plastic fibers option. This testing measured the required performance for neutron detection efficiency and gamma ray rejection capabilities of a system manufactured by Innovative American Technology (IAT) and Saint Gobain, and is a follow-up report to an earlier one on a smaller prototype system.

  9. Reinterpretation of rate data for the reaction of ClF and F{sub 2}

    SciTech Connect (OSTI)

    Trowbridge, L.D.

    1994-01-01

    Experimental data reported by Reiner and Simmons on the rate of recombination of ClF + F{sub 2} have been reinterpreted to yield a single rate equation. This reinterpretation assumes that the recombination reaction is surface area dependent and is first order in partial pressure of each of F{sub 2} and ClF. The recombination rate equation used fits quite well three data sets which varied significantly in available NiF{sub 2} surface area. Resulting equation is dn(ClF{sub 3})/dt = A S P(F{sub 2})P(ClF)(1 {minus} {Theta})e-{sup {minus}E/RT}, where dn(ClF{sub 3})/dt is the rate of formation of ClF{sub 3}in mol/s, S is the surface area of NiF{sub 2} catalyst in cm{sup 2}, P(X) is the partial pressure of species X in Torr, R is the gas constant (1.987 cal/mol-K), and T is the temperature in Kelvin. The pre-exponential A, and activation energy E are given by: A = 2.853 {times} 10{sup {minus}8} mole/s-cm{sup 2} {minus} Torr{sup 2}, and E = 11665 cal/mole, and the term (1 {minus} {Theta}), a product surface-coverage related inhibition factor, is given by: (1 {minus} {Theta}) = (1 + 0.184 P(ClF{sub 3})){sup {minus}1} (but (1 {minus} {Theta}) is never allowed to be less than 16%)

  10. Functionally-graded fiber-reinforced cement composite: Processing, microstructure, and properties

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Functionally-graded fiber-reinforced cement composite: Processing, microstructure, and properties-graded fiber-reinforced cement composite (FGFRCC). Fiber volume fractions were increased linearly from 0: Fiber-reinforced cement composite (FRCC); Functionally-graded fiber-reinforced cement composite (FGFRCC

  11. Evaluation of interphase properties in a cellulose fiber-reinforced polypropylene composite by nanoindentation

    E-Print Network [OSTI]

    Wang, Siqun

    fibers such as glass, carbon or aramid fibers and talc [1­4]. Natural fibers have numerous advantages of carbon dioxide and can aid in the conservation of petroleum. Natural fiber-reinforced polymer composites (NFRPC) have also attracted attention as a method of recycling natural fibers and plastic waste

  12. Progress in the development of scintillating optical fibers

    SciTech Connect (OSTI)

    Borenstein, S.R.; Strand, R.C.

    1983-01-01

    Starting with 1 inch diameter PVT scintillator as a preform, the authors have drawn fibers of several diameters ranging from 1 to 4 mm. These fibers have been coated in line with the draw to form optical fibers. Several cladding materials whose index of refraction ranges from 1.35 to 1.55 have been used. The most successful fiber has been obtained with an extra thick (200 micron) cladding of silicone in combination with a linear draw, as opposed to a spool draw. This fiber is acceptable, but it is extremely fragile and its quality is difficult to control. The authors are currently constructing a 12 channel hodoscope with 1 mm spatial resolution using 4 mm diameter fibers. An account is also given of the progress made in using the Avalanche Photo Diode (APD) operated in the Geiger mode as the photo detector.

  13. H{sub 2}—AgCl: A spectroscopic study of a dihydrogen complex

    SciTech Connect (OSTI)

    Grubbs, G. S.; Obenchain, Daniel A.; Pickett, Herbert M.; Novick, Stewart E.

    2014-09-21

    H{sub 2}—AgCl has been observed on a Fourier transform microwave spectrometer equipped with laser ablation source and determined to be a dihydrogen complex. Transitions up to J = 3–2 have been measured and analyzed for four isotopologues of the complex containing ortho and para H{sub 2}. The ortho and para spin states have been included in one fit, a deviation from the typical H{sub 2} complex. Rotational constants B and C, centrifugal distortion constants ?{sub J} and ?{sub JK}, nuclear electric quadrupole coupling constants ?{sub aa}, ?{sub bb}, and ?{sub cc} for {sup 35}Cl and {sup 37}Cl have been fit for both spin states while nuclear spin-nuclear spin constants D{sub aa}, D{sub bb}, and D{sub cc}, and nuclear spin-rotation constant C{sub aa} have been reported for the ortho spin state. Quantum chemical calculations predict a strong bonding interaction and the strength of the complex has been related to reported ?{sub aa} and ?{sub J} values amongst a host of comparable species, including the AgCl monomer itself. Bond lengths have been determined for Ag—Cl, Ag—H{sub 2} center-of-mass, and H—H and are reported.

  14. Fabry-Perot fiber optic sensor using multimode laser diode 

    E-Print Network [OSTI]

    Chu, Siu Yi Andrew

    1993-01-01

    irm. CD laser diodes are a candidate to be considered as a light source for our proposed fiber optic sensing scheme. A cost effective fiber sensing scheme would enable production of high volume affordable sensing devices for commercial... etc. The input light source of a fiber optic sensing scheme is usually a semiconductor singlemode laser diode, a high coherence light source; or a LED, a low coherence light source. The input optical power is launched into a singlemode or multimode...

  15. Faceted ceramic fibers, tapes or ribbons and epitaxial devices therefrom

    SciTech Connect (OSTI)

    Goyal, Amit

    2012-07-24

    A crystalline article includes a single-crystal ceramic fiber, tape or ribbon. The fiber, tape or ribbon has at least one crystallographic facet along its length, which is generally at least one meter long. In the case of sapphire, the facets are R-plane, M-plane, C-plane or A-plane facets. Epitaxial articles, including superconducting articles, can be formed on the fiber, tape or ribbon.

  16. Faceted ceramic fibers, tapes or ribbons and epitaxial devices therefrom

    DOE Patents [OSTI]

    Goyal, Amit

    2013-07-09

    A crystalline article includes a single-crystal ceramic fiber, tape or ribbon. The fiber, tape or ribbon has at least one crystallographic facet along its length, which is generally at least one meter long. In the case of sapphire, the facets are R-plane, M-plane, C-plane or A-plane facets. Epitaxial articles, including superconducting articles, can be formed on the fiber, tape or ribbon.

  17. Packing of softly repulsive particles in a spherical box - a generalised Thomson problem

    E-Print Network [OSTI]

    A. Mughal

    2013-06-12

    We study the (near or close to) ground state distribution of N softly repelling particles trapped in the interior of a spherical box. The charges mutually interact via an inverse power law potential of the form $1/r^\\gamma$. We study three regimes in which the charges form an single spherical shell at the edge of the box ($\\gamma=1$), a series of concentric shells of increasing density ($\\gamma=2$) and $\\gamma=12$ for which the charges form shells with a more uniform charge distribution. We conduct numerical simulations for clusters containing up to 5000 charges and compare charge density across the system with continuum limit results. The agreement between numerical (discrete) results and the continuum limit is found to improve with increasing N.

  18. Higher-Derivative $f(R,\\Box R, T)$ Theories of Gravity

    E-Print Network [OSTI]

    Houndjo, M J S; Mazhari, N S; Momeni, D; Myrzakulov, R

    2016-01-01

    In literature there is a model of modified gravity in which the matter Lagrangian is coupled to the geometry via trace of the stress-energy momentum tensor $T=T_{\\mu}^{\\mu}$. This type of modified gravity is called as $f(R,T)$ in which $R$ is Ricci scalar $R=R_{\\mu}^{\\mu}$. We extend manifestly this model to include the higher derivative term $\\Box R$. We derived equation of motion (EOM) for the model by starting from the basic variational principle. Later we investigate FLRW cosmology for our model. We show that de Sitter solution is unstable for a generic type of $f(R,\\Box R, T)$ model. Furthermore we investigate an inflationary scenario based on this model. A graceful exit from inflation is guaranteed in this type of modified gravity.

  19. Resolving optical illumination distributions along an axially symmetric photodetecting fiber

    E-Print Network [OSTI]

    Lestoquoy, Guillaume

    2012-01-01

    Photodetecting fibers of arbitrary length with internal metal, semiconductor and insulator domains have recently been demonstrated. These semiconductor devices display a continuous translational symmetry which presents ...

  20. Resolving optical illumination distributions along an axially symmetric photodetecting fiber

    E-Print Network [OSTI]

    Sorin, Fabien

    Photodetecting fibers of arbitrary length with internal metal, semiconductor and insulator domains have recently been demonstrated. These semiconductor devices exhibit a continuous translational symmetry which presents ...

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

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

    technology is the next wave of productivity...The acceleration of this trend in carbon fiber manufacturing will impact three workforce development trends. First is the need for...

  2. Fiber delivered probe for efficient CARS imaging of tissues

    E-Print Network [OSTI]

    Balu, Mihaela; Liu, Gangjun; Chen, Zhongping; Tromberg, Bruce J; Potma, Eric O

    2010-01-01

    atherosclerotic lesions by CARS-based multimoddal nonlinearanti-Stokes Raman scattering (CARS) microscopy,” Proc. Natl.fiber for interferometric CARS microscopy,” Opt. Express 14,

  3. Optimization Online - Wavelength Assignment in Multi-Fiber WDM ...

    E-Print Network [OSTI]

    Arie M.C.A. Koster

    2005-03-17

    Mar 17, 2005 ... By this relation, we show that for a network with an even number of fibers ... proceedings of the International Network Optimization Conference, ...

  4. Fiber-Optic Sensor for Industrial Process Measurement and Control...

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

    Fiber-Optic Sensor for Industrial Process Measurement and Control Reliable Advanced Laser Sensor Helps Control High Temperature Gas Combustion Through a marketing agreement...

  5. Method and apparatus for assaying wood pulp fibers

    DOE Patents [OSTI]

    Gustafson, Richard (Bellevue, WA); Callis, James B. (Seattle, WA); Mathews, Jeffrey D. (Neenah, WI); Robinson, John (Issaquah, WA); Bruckner, Carsten A. (San Mateo, CA); Suvamakich, Kuntinee (Seattle, WA)

    2009-05-26

    Paper pulp is added to a stain solution. The stain solution and pulp fibers are mixed to form a slurry. Samples are removed from the slurry and are admixed with dilution water and a bleach. Then, the fibers are moved into a flow cell where they are subjected to a light source adapted to stimulate fluorescence from the stained pulp fiber. Before the fiber slurry enters the flow cell it is mixed with a dilution water of bleach to reduce background fluorescence. The fluorescent light is collimated and directed through a dichroic filter onto a fluorescence splitting dichroic filter.

  6. Sandia Energy - Sandia and EMCORE: Solar Photovoltaics, Fiber...

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

    EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency Home Renewable Energy Energy Partnership Concentrating Solar Power Photovoltaic Research & Capabilities Solar...

  7. Fiber optics interface for a dye laser oscillator and method

    DOE Patents [OSTI]

    Johnson, Steve A. (Tracy, CA); Seppala, Lynn G. (Pleasanton, CA)

    1986-01-01

    A dye laser oscillator in which one light beam is used to pump a continuous tream of dye within a cooperating dye chamber for producing a second, different beam is generally disclosed herein along with a specific arrangement including an optical fiber and a fiber optics interface for directing the pumping beam into the dye chamber. The specific fiber optics interface illustrated includes three cooperating lenses which together image one particular dimension of the pumping beam into the dye chamber from the output end of the optical fiber in order to insure that the dye chamber is properly illuminated by the pumping beam.

  8. Contact Lee McGetrick Director, Carbon Fiber Technology Facility

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

    www.ornl.govmanufacturing Demonstrating Innovative Low-Cost Carbon Fiber for Energy and National Security Applications Oak Ridge National Laboratory is home to the...

  9. GENERIC FIBER RINGS OF MIXED POWER SERIES/POLYNOMIAL ...

    E-Print Network [OSTI]

    fibers encode important information about the structure of R. For example, the. local ring R is ... National Security Agency for its support. Typeset by AMS-TEX. 1

  10. Manufacturing Demonstration Facility Low-Cost Carbon Fiber Available...

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

    Low-Cost Carbon Fiber Available to US Manufacturers for Market Development and Demonstration Oak Ridge National Laboratory (ORNL) is making available market development quantities...

  11. Fiber optics interface for a dye laser oscillator and method

    DOE Patents [OSTI]

    Johnson, S.A.; Seppala, L.G.

    1984-06-13

    A dye laser oscillator in which one light beam is used to pump a continuous stream of dye within a cooperating dye chamber for producing a second, different beam is generally disclosed herein along with a specific arrangement including an optical fiber and a fiber optics interface for directing the pumping beam into the dye chamber. The specific fiber optics interface illustrated includes three cooperating lenses which together image one particular dimension of the pumping beam into the dye chamber from the output end of the optical fiber in order to insure that the dye chamber is properly illuminated by the pumping beam.

  12. Corn fiber hulls as a food additive or animal feed

    DOE Patents [OSTI]

    Abbas, Charles (Champaign, IL); Beery, Kyle E. (Decatur, IN); Cecava, Michael J. (Decatur, IN); Doane, Perry H. (Decatur, IN)

    2010-12-21

    The present invention provides a novel animal feed or food additive that may be made from thermochemically hydrolyzed, solvent-extracted corn fiber hulls. The animal feed or food additive may be made, for instance, by thermochemically treating corn fiber hulls to hydrolyze and solubilize the hemicellulose and starch present in the corn fiber hulls to oligosaccharides. The residue may be extracted with a solvent to separate the oil from the corn fiber, leaving a solid residue that may be prepared, for instance by aggolmerating, and sold as a food additive or an animal feed.

  13. Glass fiber composition. [for use as thermal insulation

    DOE Patents [OSTI]

    Wolf, G.A.; Kupfer, M.J.

    1980-12-19

    The invention relates to a glass fiber composition useful for thermal insulation having a low melting temperature and high chemical durability.

  14. Multiparameter Fiber Optic Sensing System for Monitoring Enhanced...

    Open Energy Info (EERE)

    Multiparameter Fiber Optic Sensing System for Monitoring Enhanced Geothermal Systems Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title...

  15. Kenaf Bast Fibers—Part I: Hermetical Alkali Digestion

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

    Shi, Jinshu; Shi, Sheldon Q.; Barnes, H. Michael; Horstemeyer, Mark; Wang, Jinwu; Hassan, El-Barbary M.

    2011-01-01

    The objective of this study was to develop a hermetical alkali digestion process to obtain single cellulosic fibers from kenaf bast. Kenaf bast were hermetically digested into single fiber using a 5% sodium hydroxide solution for one hour at four different temperatures (80 ° C, 110 ° C, 130 ° C, and 160 ° C). The hermetical digestion process used in this study produced fibers with high cellulose content (84.2–92.3%) due to the removal of lignin and hemicelluloses. The surface hardness and elastic modulus of the fibers digested at 130 ° C and 160 ° C were improved significantlymore »compared with those digested at 80 ° C. The tensile modulus and tensile strength of the individual fibers reduced as the digestion temperature increased from 110 ° C to 160 ° C. Micropores were generated in fiber cell wall when the fibers were digested at 130 ° C and 160 ° C. The studies on the composites that were made from polypropylene reinforced with the digested fibers indicated that the compatibility between the digested fibers and polypropylene matrix was poor. « less

  16. High power 938 nanometer fiber laser and amplifier

    DOE Patents [OSTI]

    Dawson, Jay W. (Livermore, CA); Liao, Zhi Ming (Pleasanton, CA); Beach, Raymond J. (Livermore, CA); Drobshoff, Alexander D. (Livermore, CA); Payne, Stephen A. (Castro Valley, CA); Pennington, Deanna M. (Livermore, CA); Hackenberg, Wolfgang (Munich, DE); Calia, Domenico Bonaccini (Garching, DE); Taylor, Luke (Montauban de Bretagne, FR)

    2006-05-02

    An optical fiber amplifier includes a length of silica optical fiber having a core doped with neodymium, a first cladding and a second cladding each with succeeding lower refractive indices, where the first cladding diameter is less than 10 times the diameter of the core. The doping concentration of the neodymium is chosen so that the small signal absorption for 816 nm light traveling within the core is less than 15 dB/m above the other fiber losses. The amplifier is optically pumped with one laser into the fiber core and with another laser into the first cladding.

  17. Mesoscopic Effects in Bose-Einstein Condensate Fluctuations of an Ideal Gas in a Box 

    E-Print Network [OSTI]

    Dorfman, Konstantin Evgenievich

    2009-05-15

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 ix LIST OF FIGURES FIGURE Page 1 Negative binomial distribution of the number of noncondensed atoms for an ideal Bose gas in a box with total number of particles N = 10000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2... Temperature scaling of the normalization factor, i.e. ?(N ?n) for an ideal Bose gas (N = 100 - grey line, N = 1000 - black line). Temperature is normalized by the standard thermodynamic limit critical value Tc(N = ?) that differs from the finite-size Tc(N...

  18. Molecular dynamics simulations of the electrical double layer on smectite surfaces contacting concentrated mixed electrolyte (NaCl-CaCl?) solutions

    SciTech Connect (OSTI)

    Bourg, Ian C.; Sposito, Garrison

    2011-01-01

    We report new molecular dynamics results elucidating the structure of the electrical double layer (EDL) on smectite surfaces contacting mixed NaCl–CaCl2 electrolyte solutions in the range of concentrations relevant to pore waters in geologic repositories for CO2 or high-level radioactive waste (0.34–1.83 molc dm-3). Our results confirm the existence of three distinct ion adsorption planes (0-, ?-, and d-planes), often assumed in EDL models, but with two important qualifications: (1) the location of the ?- and d-planes are independent of ionic strength or ion type and (2) “indifferent electrolyte” ions can occupy all three planes. Charge inversion occurred in the diffuse ion swarm because of the affinity of the clay surface for CaCl+ ion pairs. Therefore, at concentrations {>=0.34 molc dm-3}, properties arising from long-range electrostatics at interfaces (electrophoresis, electro-osmosis, co-ion exclusion, colloidal aggregation) will not be correctly predicted by most EDL models. Co-ion exclusion, typically neglected by surface speciation models, balanced a large part of the clay mineral structural charge in the more concentrated solutions. Water molecules and ions diffused relatively rapidly even in the first statistical water monolayer, contradicting reports of rigid “ice-like” structures for water on clay mineral surfaces.

  19. 4.5-K Cold Box for SNS - A Successful Cooperation

    SciTech Connect (OSTI)

    Fleck, U.; Kurtcuoglu, K. [Linde Kryotechnik AG, CH-8422 Pfungen (Switzerland); Urbin, J.; Howe, D. [Linde BOC Process Plants LLC, Tulsa, Oklahoma, 74133-1923 (United States)

    2004-06-23

    The US Department of Energy is constructing the next generation, accelerator-based, neutron source, the Spallation Neutron Source at the Oak Ridge National Laboratory. The superconducting LINAC requires a large custom cryogenic helium system that was specified and ordered by the Thomas Jefferson National Accelerator Laboratory. Two groups of Linde AG's engineering division teamed to design, fabricate, and deliver the 4.5-K cold box for the SNS Central He liquefier. Linde Kryotechnik AG (LK), Switzerland provided design, engineering support and the gas bearing turbine systems. Process design for 4.5 K cooling as well as 38-K shield cooling will be explained. Control logic, including turbine related logic, was specified by LK and implemented successfully by ORNL in their control system in cooperation with LK. Linde BOC Process Plants LLC, Tulsa, Oklahoma fabricated, tested and delivered the cold box. Skills and techniques specific to helium cold box fabrication will be discussed. Finally, an overview of the commissioning will be provided according to the project status.

  20. Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges

    E-Print Network [OSTI]

    R. Luetticke; M. Pohlen; R. -J. Dettmar

    2004-01-06

    Inspecting all 1224 edge-on disk galaxies larger than 2' in the RC3 on DSS images we have found several galaxies with extraordinary bulges meeting two criteria: They are box shaped and large in respect to the diameters of their galaxies. These bulges are often disturbed, show frequently prominent irregularities and asymmetries, and some possess possible merger remnants or merging satellites. For these bulges we have introduced the term "Thick Boxy Bulges" (TBBs). About 2% of all disk galaxies (S0-Sd), respectively 4% of all galaxies with box- and peanut-shaped (b/p) bulges, belong to this class of galaxies. Using multicolour CCD and NIR data we have enlarged and followed up our sample of nearly 20 galaxies with a TBB. The disturbed morphology of a large fraction of these galaxies shows that many of the TBB galaxies are not dynamically settled. For the TBBs the extent of the box shape seems to be too large to result from a normal bar potential. Therefore we conclude that two classes of b/p bulges exist with different origins. While most (~96%) b/p bulges can be explained by bars alone, the extended boxy structures of TBBs result most likely from accreted material by infalling satellite companions (soft merging).

  1. Substituted copper phthalocyanine/multiwalled carbon nanotubes hybrid material for Cl{sub 2} sensing application

    SciTech Connect (OSTI)

    Sharma, Anshul Kumar, E-mail: dramanmahajan@yahoo.co.in; Saini, Rajan, E-mail: dramanmahajan@yahoo.co.in; Singh, Rajinder, E-mail: dramanmahajan@yahoo.co.in; Mahajan, Aman, E-mail: dramanmahajan@yahoo.co.in; Bedi, R. K., E-mail: dramanmahajan@yahoo.co.in [Material Science Laboratory, Department of Physics, Guru Nanak Dev University, Amritsar-143005 (India); Aswal, D. K. [Technical Physics Division, Bhabha Atomic Research Center, Mumbai-400085 (India)

    2014-04-24

    In this work, hybrid of soluble copper phthalocyanine (CuPcOC{sub 8}) and functionalized multi-walled carbon nanotubes (MWCNTs) has been synthesized. The formation of CuPcOC{sub 8}-MWCNTs hybrid is confirmed by atomic force microscopy, UV-Visible and FTIR spectroscopy. Subsequently, a chemi-resistive sensor is fabricated by drop casting CuPcOC{sub 8}-MWCNTs hybrid onto glass substrate. It has been demonstrated that CuPcOC{sub 8}-MWCNTs hybrid is highly selective towards Cl{sub 2} gas with minimum detection limit of 100 ppb. The response of sensor increases linearly with increase in the concentration of Cl{sub 2} gas. For 2000 ppb of Cl{sub 2}, CuPcOC{sub 8}-MWCNTs hybrid gives a response as large as 53% in 40 seconds.

  2. Method for the continuous processing of hermetic fiber optic components and the resultant fiber optic-to-metal components

    DOE Patents [OSTI]

    Kramer, D.P.

    1994-08-09

    Hermetic fiber optic-to-metal components and method for making hermetic fiber optic-to-metal components by assembling and fixturing elements comprising a metal shell, a glass preform, and a metal-coated fiber optic into desired relative positions and then sealing said fixtured elements preferably using a continuous heating process is disclosed. The resultant hermetic fiber optic-to-metal components exhibit high hermeticity and durability despite the large differences in thermal coefficients of expansion among the various elements. 3 figs.

  3. Advanced Metal Fiber Wall-Flow DPF For Diesel Emission Control...

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

    Metal Fiber Wall-Flow DPF For Diesel Emission Control Advanced Metal Fiber Wall-Flow DPF For Diesel Emission Control A new metal fiber wall-flow DPF with up to 99% efficiency and...

  4. Characterization of interphase in natural fiber reinforced polymer composites using nano-

    E-Print Network [OSTI]

    Gray, Matthew

    1 Characterization of interphase in natural fiber reinforced polymer composites using nano Results · Future works INTRODUCTION Natural fiberNatural fiber--reinforcedreinforced polymer consumption,properties, low energy consumption, carbon dioxide neutral, no residuescarbon dioxide neutral

  5. PURDUE UNIVERSITY ULTRAFAST OPTICS & OPTICAL FIBER COMMUNICATIONS LABORATORY Andrew M. Weiner and Ehsan Hamidi

    E-Print Network [OSTI]

    Purdue University

    PURDUE UNIVERSITY ULTRAFAST OPTICS & OPTICAL FIBER COMMUNICATIONS LABORATORY Andrew M. Weiner ULTRAFAST OPTICS & OPTICAL FIBER COMMUNICATIONS LABORATORY Ultrawideband (UWB) Radio-frequency Photonics UWB;PURDUE UNIVERSITY ULTRAFAST OPTICS & OPTICAL FIBER COMMUNICATIONS LABORATORY Femtosecond Pulse Shaping A

  6. Development of a Seed Cotton Fiber Quality Sensing System For Cotton Fiber Quality Mapping 

    E-Print Network [OSTI]

    Schielack, Vincent Paul

    2012-02-14

    .......................................................................................... 5 Cotton Quality Variation ...................................................................... 5 Fiber Quality Mapping ......................................................................... 6 Objectives... ................................................................................. 19 Figure 5 Transmission curve for the 1450-nm band-pass filter with 12-nm FWHM ................................................................................. 20 Figure 6 Transmission curve for the 1550-nm band-pass filter with 12-nm...

  7. Low Cost Carbon Fiber Produc on Carbon Fiber Manufacturing Cost Modeling

    E-Print Network [OSTI]

    a lengthy and energy intensive oxidative stabilization step so that the fibers can endure the high be developed in order to evaluate the cost- effectiveness of alternative manufacturing pathways being considered by the industry today. Approach ORNL is investigating various alternative precursors and advanced

  8. Precise half-life measurements for the superallowed beta(+) emitters Ar-34 and Cl-34 

    E-Print Network [OSTI]

    Iacob, V. E.; Hardy, John C.; Brinkley, J. F.; Gagliardi, Carl A.; Mayes, V. E.; Nica, N.; Sanchez-Vega, M.; Tabacaru, G.; Trache, L.; Tribble, Robert E.

    2006-01-01

    To contribute meaningfully to any test of the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the measured ft value of a superallowed 0(+)-> 0(+) beta(+) transition must be obtained to a precision of 0.1% or better. We have determined the half-life of the superallowed emitter Ar-34 to be 843.8(4)ms... daughter Cl-34. We achieved the required precision on Ar-34 by analyzing the parent-daughter composite decay with a new fitting technique. We also obtained an improved half-life for Cl-34 of 1.5268(5) s, which has 0.03% precision and is a factor of two...

  9. Fiber Reinforced Polymer Composite Manufacturing Workshop

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n cEnergyNaturaldefinesMay 4,ofLeifer-29,CoalSunShotDepartmentFiber

  10. Fiber Characterization and Analysis | Argonne National Laboratory

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article) | SciTechSubmitted MoreTrafficFerrin Moore,FerryFiber

  11. Box Canyon 

    E-Print Network [OSTI]

    Unknown

    2011-09-05

    to understand the significance of periodic orbits on a simple dynamic system. Two hybrid system applications with different levels of complexity will be considered in this thesis – an anthropomorphic Bipedal walking robot and a Double Pendulum with a...

  12. Pandora's Box

    E-Print Network [OSTI]

    Kazzi, A Antoine

    2004-01-01

    AACEM, CORD, EMRA, and the ACEP Councilors and membershipCORD, AACEM, SAEM and the ACEP Council & members did notfrom AAEM, AAEM/RES, ACEP, and CORD. However, these written

  13. Box Canyon 

    E-Print Network [OSTI]

    Unknown

    2011-09-05

    , little is known about their mechanisms of formation and the relationship of sub-surface structure to current seep activity. In this study, we examined three seafloor seeps in the Garden Banks and Mississippi Canyon areas using exploration and reprocessed...

  14. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    for Actuators and Sensors,” Journal of Intelligent MaterialOptical Fiber Sensors,” Journal of Intelligent Materialcoatings for intelligent structure fiber optic sensors,” San

  15. Low-Cost Carbon-Fiber Integration / Users Facility and Commercializati...

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

    Low-Cost Carbon-Fiber Integration Users Facility and Commercialization of Textile Precursors Low-Cost Carbon-Fiber Integration Users Facility and Commercialization of Textile...

  16. Evaluation of microstructure and properties deterioration in short fiber reinforced thermoplastics

    E-Print Network [OSTI]

    Sevostianov, Igor

    Evaluation of microstructure and properties deterioration in short fiber reinforced thermoplastics. Effective elastic stiffnesses and thermal diffusivities of glass fiber reinforced thermoplastic are measured

  17. Low-Cost Bio-Based Carbon Fibers for High-Temperature Processing

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

    resources such as Carbon Fiber Technology Facility (CFTF). Approach Lignin, a biopolymer, has potential to be a low-cost carbon fiber precursor if certain technical...

  18. Communication Seebeck effect in steel fiber reinforced cement

    E-Print Network [OSTI]

    Chung, Deborah D.L.

    Communication Seebeck effect in steel fiber reinforced cement Sihai Wen, D.D.L. Chung* Composite Abstract Cement pastes containing short steel fibers, which contribute to electron conduction, exhibit.0% by mass of cement gives a higher value of the absolute thermoelectric power than a content of 0.5% by mass

  19. Fiber delivered probe for efficient CARS imaging of tissues

    E-Print Network [OSTI]

    Potma, Eric Olaf

    Fiber delivered probe for efficient CARS imaging of tissues Mihaela Balu1, Gangjun Liu1, Zhongping-Stokes Raman scattering (CARS) signal in biological tissues. We discuss the design challenges including capturing the back- scattered forward generated CARS signal in the sample and the effects of fiber

  20. Ferry Slik Economic Botany -UBD What are fibers?

    E-Print Network [OSTI]

    Slik, Ferry

    treatment for dying - Attacked by fungi, molds and termites - Not elastic - Generally water absorbant #12 material - Drying makes the material breakable - Rolling breaks the woody parts, but does not affect that swells the fibers - The process prevents the shrinking of the fibers after washing #12;Seed and f

  1. Flexible fiber batteries for applications in smart textiles

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    Flexible fiber batteries for applications in smart textiles Hang Qu1 , Oleg Semenikhin2 and Maksim as electrolyte, and it is introduced into the battery after the drawing process. The capacity of a 1 m long fiber battery is measured to be 10 mAh. We also detail assembly and optimization of the electrical circuitry

  2. Extrinsic fiber optic displacement sensors and displacement sensing systems

    DOE Patents [OSTI]

    Murphy, Kent A. (Roanoke, VA); Gunther, Michael F. (Blacksburg, VA); Vengsarkar, Ashish M. (Scotch Plains, NJ); Claus, Richard O. (Christiansburg, VA)

    1994-01-01

    An extrinsic Fizeau fiber optic sensor comprises a single-mode fiber, used as an input/output fiber, and a multimode fiber, used purely as a reflector, to form an air gap within a silica tube that acts as a Fizeau cavity. The Fresnel reflection from the glass/air interface at the front of the air gap (reference reflection) and the reflection from the air/glass interface at the far end of the air gap (sensing reflection) interfere in the input/output fiber. The two fibers are allowed to move in the silica tube, and changes in the air gap length cause changes in the phase difference between the reference reflection and the sensing reflection. This phase difference is observed as changes in intensity of the light monitored at the output arm of a fused biconical tapered coupler. The extrinsic Fizeau fiber optic sensor behaves identically whether it is surface mounted or embedded, which is unique to the extrinsic sensor in contrast to intrinsic Fabry-Perot sensors. The sensor may be modified to provide a quadrature phase shift extrinsic Fizeau fiber optic sensor for the detection of both the amplitude and the relative polarity of dynamically varying strain. The quadrature light signals may be generated by either mechanical or optical means. A plurality of the extrinsic sensors may connected in cascade and multiplexed to allow monitoring by a single analyzer.

  3. Extrinsic fiber optic displacement sensors and displacement sensing systems

    DOE Patents [OSTI]

    Murphy, K.A.; Gunther, M.F.; Vengsarkar, A.M.; Claus, R.O.

    1994-04-05

    An extrinsic Fizeau fiber optic sensor comprises a single-mode fiber, used as an input/output fiber, and a multimode fiber, used purely as a reflector, to form an air gap within a silica tube that acts as a Fizeau cavity. The Fresnel reflection from the glass/air interface at the front of the air gap (reference reflection) and the reflection from the air/glass interface at the far end of the air gap (sensing reflection) interfere in the input/output fiber. The two fibers are allowed to move in the silica tube, and changes in the air gap length cause changes in the phase difference between the reference reflection and the sensing reflection. This phase difference is observed as changes in intensity of the light monitored at the output arm of a fused biconical tapered coupler. The extrinsic Fizeau fiber optic sensor behaves identically whether it is surface mounted or embedded, which is unique to the extrinsic sensor in contrast to intrinsic Fabry-Perot sensors. The sensor may be modified to provide a quadrature phase shift extrinsic Fizeau fiber optic sensor for the detection of both the amplitude and the relative polarity of dynamically varying strain. The quadrature light signals may be generated by either mechanical or optical means. A plurality of the extrinsic sensors may connected in cascade and multiplexed to allow monitoring by a single analyzer. 14 figures.

  4. Organically modified silicate coatings for optical fibers A. B. Wojcik

    E-Print Network [OSTI]

    Matthewson, M. John

    Organically modified silicate coatings for optical fibers A. B. Wojcik L. C. Klein V. V. Rondinella been prepared to be used as protective coatings for optical fibers. The synthesis involves the reaction, solvent-free resins were obtained that hardened in seconds when exposed to UV radiation. The coating

  5. Pulse confinement in optical fibers with random dispersion

    E-Print Network [OSTI]

    Gabitov, Ildar

    Pulse confinement in optical fibers with random dispersion M. Chertkov , I. Gabitov, and J. Moeser and eventually destroys all initially ultra-short pulses. However, under the con- straint that the integral- periodically along the fiber, the dynamics of the pulse propagation changes dramatically. For the case

  6. Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs

    E-Print Network [OSTI]

    Federspiel, William J.

    Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs HEIDE J. EASH,* HEATHER in artificial lungs (ox- ygenators) undergo plasma leakage (or wetting) in which blood plasma slowly fills2 gas permeance of a plasma resistant fiber imposes the greatest constraint upon artificial lung

  7. Method for forming hermetic coatings for optical fibers

    DOE Patents [OSTI]

    Michalske, Terry A. (P.O. Box 1042, Cedar Crest, NM 87008); Rye, Robert R. (1304 Espanola NE., Albuquerque, NM 87110); Smith, William L. (9916 Fostoria Rd., NE., Albuquerque, NM 87111)

    1993-01-01

    A method for forming hermetic coatings on optical fibers by hot filament assisted chemical vapor deposition advantageously produces a desirable coating while maintaining the pristine strength of the pristine fiber. The hermetic coatings may be formed from a variety of substances, such as, for example, boron nitride and carbon.

  8. Design implications of fiber orientation in molded thermoplastic composites 

    E-Print Network [OSTI]

    Boulios, Konstantinos Elephtherios

    1991-01-01

    for the degree of MASTERS OF SCIENCE May 1991 Major Subject: Mechanical Engineering DESIGN IMPLICATIONS OF FIBER ORIENTATION IN MOLDED THERMOPLASTIC COMPOSITES A Thesis by KONSTANTINOS ELEPHTHERIOS BOULIOS Approved as to style and content by: Alan... Test. PAGE . . . . 69 . . . . 76 IV MECHANICAL BEHAVIOR SIMULATION OF A COMPRESSION MOLDING FIBER REINFORCED STRUCTURE. . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . IV. I Description of the Finite Element Model. IV. 2 Discussion...

  9. Fiber Optic Sensors for PEM Fuel Cells Nigel David

    E-Print Network [OSTI]

    Victoria, University of

    Fiber Optic Sensors for PEM Fuel Cells by Nigel David B.Sc., Simon Fraser University, 2004 M or other means, without the permission of the author. #12;ii Fiber Optic Sensors for PEM Fuel Cells Fyles, Outside Member (Department of Chemistry) ABSTRACT Fibre-optic sensing techniques for application

  10. Mechanisms, Models, and Simulations of Metal-Coated Fiber Consolidation

    E-Print Network [OSTI]

    Wadley, Haydn

    pro-gas turbine engines and other aerospace structures because cess.[6] Recent micromechanicalMechanisms, Models, and Simulations of Metal-Coated Fiber Consolidation R. VANCHEESWARAN, J of Ti-6Al-4V­coated SiC fibers contained in cylindrical canisters have revealed an unexpectedly high

  11. Photocatalytic Self Cleaning Textile Fibers by Coaxial Electrospinning

    E-Print Network [OSTI]

    Cincinnati, University of

    Photocatalytic Self Cleaning Textile Fibers by Coaxial Electrospinning N. M. Bedford,§ and A. J Photocatalytic self-cleaning textile fibers have been created using coaxial electrospinning. This is accomplished by electrospinning cellulose acetate as the core phase and a dispersion of nanocrystalline TiO2, a well

  12. Developments in Oxide Fiber Composites Frank W. Zokw

    E-Print Network [OSTI]

    Zok, Frank

    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

  13. Brief Report Replacement of Adenovirus Type 5 Fiber Shaft

    E-Print Network [OSTI]

    Hemminki, Akseli

    Brief Report Replacement of Adenovirus Type 5 Fiber Shaft Heparan Sulfate Proteoglycan-binding domain of the fiber shaft to GATK results in liver transduction detargeting, but it is not compatible shaft location efficiently enhances the infectivity of adenovirus and improves the tumor

  14. Grizzly Substation Fiber Optics : Environmental Assessment.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1998-02-01

    This notice announces BPA`s decision to construct, operate, and maintain the Grizzly Substation Fiber Optic Project (Project). This Project is part of a continuing effort by BPA to complete a regionwide upgrade of its existing telecommunications system. The US Forest Service and BPA jointly prepared the Grizzly Substation Fiber Optic Project Environmental Assessment (EA) (DOE/EA-1241) evaluating the potential environmental impacts of the Proposed Action, the Underground Installation Alternative, and the No Action Alternative. Based on the analysis in the EA, the US Forest Service and BPA have determined that the Proposed Action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an Environmental Impact Statement (EIS) is not required and BPA is issuing this FONSI. The US Forest Service has separately issued a FONSI and Decision Notice authorizing BPA to construct, operate, and maintain the Project within the Crooked River National Grassland (Grassland).

  15. Fiber-optic sensors and geothermal reservoir engineering

    SciTech Connect (OSTI)

    Angel, S.M.; Kasameyer, P.W. )

    1988-12-01

    Perhaps the first demonstrations of fiber-optic sensors in a geothermal well occurred in early 1988 on the Island of Hawaii. The first of two fiber-optic optrode tests was at the HGP-A well and 3-megawatt power plant facility managed by the Hawaii National Energy Institute at the University of Hawaii. The second test was in a nearby geothermal exploratory well, Geothermal Test Well 2. Both sites are in the Kilauea East Rift zone. A fiber-optic temperature sensor test will be undertaken soon in a deeper, hotter geothermal well. Problems will be examined that may occur with a stainless steel-sleeved, fiber-optic cable. The paper describes fiber optic technology and its use in geothermal reservoir engineering.

  16. A Fiber Interferometer for the Magnetized Shock Experiment

    SciTech Connect (OSTI)

    Yoo, Christian [Los Alamos National Laboratory

    2012-08-30

    The Magnetized Shock Experiment (MSX) at Los Alamos National Laboratory requires remote diagnostics of plasma density. Laser interferometry can be used to determine the line-integrated density of the plasma. A multi-chord heterodyne fiber optic Mach-Zehnder interferometer is being assembled and integrated into the experiment. The advantage of the fiber coupling is that many different view chords can be easily obtained by simply moving transmit and receive fiber couplers. Several such fiber sets will be implemented to provide a time history of line-averaged density for several chords at once. The multiple chord data can then be Abel inverted to provide radially resolved spatial profiles of density. We describe the design and execution of this multiple fiber interferometer.

  17. Tunable transport of drops on a vibrating inclined fiber

    E-Print Network [OSTI]

    Bick, Alison; Sauret, Alban; Stone, Howard A

    2015-01-01

    Transport of liquid drops in fibrous media occurs in various engineering systems such as fog harvesting or cleaning of textiles. The ability to tune or to control liquid movement can increase the system efficiency and enable new engineering applications. In this Letter, we experimentally investigate how partially wetting drops on a single fiber can be manipulated by vibrating the fiber. We show that a sliding motion along the fiber or a dripping of the drop can be triggered by standing waves. We identify the conditions on the drop volume, the fiber tilt angle and the amplitude and frequency of oscillations to observe these different behaviors. Finally, we experimentally illustrate that vibrations can be used to control the transport and the collection of water drops along a fiber using a combination of the sliding and dripping transitions.

  18. Measurement of large strains in ropes using plastic optical fibers

    DOE Patents [OSTI]

    Williams, Jerry Gene; Smith, David Barton; Muhs, Jeffrey David

    2006-02-14

    A method for the direct measurement of large strains in ropes in situ using a plastic optical fiber, for example, perfluorocarbon or polymethyl methacrylate and Optical Time-Domain Reflectometer or other light time-of-flight measurement instrumentation. Protective sheaths and guides are incorporated to protect the plastic optical fiber. In one embodiment, a small rope is braided around the plastic optical fiber to impose lateral compressive forces to restrain the plastic optical fiber from slipping and thus experience the same strain as the rope. Methods are described for making reflective interfaces along the length of the plastic optical fiber and to provide the capability to measure strain within discrete segments of the rope. Interpretation of the data allows one to calculate the accumulated strain at any point in time and to determine if the rope has experienced local damage.

  19. Low-temperature hermetic sealing of optical fiber components

    SciTech Connect (OSTI)

    Kramer, D.P.

    1995-12-31

    A method for manufacturing low-temperature hermetically sealed optical fiber components is provided. The method comprises the steps of: inserting an optical fiber into a housing, the optical fiber having a glass core, a glass cladding and a protective buffer layer disposed around the core and cladding; heating the housing to a predetermined temperature, the predetermined temperature being below a melting point for the protective buffer layer and above a melting point of a solder; placing the solder in communication with the heated housing to allow the solder to form an eutectic and thereby fill a gap between the interior of the housing and the optical fiber; and cooling the housing to allow the solder to form a hermetic compression seal between the housing and the optical fiber.

  20. Fine-grained hodoscopes based on scintillating optical fibers

    SciTech Connect (OSTI)

    Borenstein, S.R.; Strand, R.C.

    1981-01-01

    In order to exploit the high event rates at ISABELLE, it will be necessary to have fast detection with fine spatial resolution. The authors are currently constructing a prototype fine-grained hodoscope, the elements of which are scintillating optical fibers. The fibers have been drawn from commercially available plastic scintillator which has been clad with a thin layer of silicone. So far it has been demonstrated with one mm diameter fibers, that with a photodetector at each end, the fibers are more than 99% efficient for lengths of about 60 cm. The readout will be accomplished either with small diameter photomultiplier tubes or avalanche photodiodes used either in the linear or Geiger mode. The program of fiber development and evaluation is described. The status of the APD as a readout element is discussed, and an optical encoding readout scheme is described for events of low multiplicity.

  1. Apparatus and method for carbon fiber surface treatment

    DOE Patents [OSTI]

    Paulauskas, Felix L. (Knoxville, TN); Sherman, Daniel M. (Knoxville, TN)

    2012-07-24

    An apparatus and method for enhancing the surface energy and/or surface chemistry of carbon fibers involves exposing the fibers to direct or indirect contact with atmospheric pressure plasma generated using a background gas containing at least some oxygen or other reactive species. The fiber may be exposed directly to the plasma, provided that the plasma is nonfilamentary, or the fiber may be exposed indirectly through contact with gases exhausting from a plasma discharge maintained in a separate volume. In either case, the process is carried out at or near atmospheric pressure, thereby eliminating the need for vacuum equipment. The process may be further modified by moistening the fibers with selected oxygen-containing liquids before exposure to the plasma.

  2. Low-temperature hermetic sealing of optical fiber components

    DOE Patents [OSTI]

    Kramer, D.P.

    1996-10-22

    A method for manufacturing low-temperature hermetically sealed optical fiber components is provided. The method comprises the steps of: inserting an optical fiber into a housing, the optical fiber having a glass core, a glass cladding and a protective buffer layer disposed around the core and cladding; heating the housing to a predetermined temperature, the predetermined temperature being below a melting point for the protective buffer layer and above a melting point of a solder; placing the solder in communication with the heated housing to allow the solder to form an eutectic and thereby fill a gap between the interior of the housing and the optical fiber; and cooling the housing to allow the solder to form a hermetic compression seal between the housing and the optical fiber. 5 figs.

  3. A Novel Cl Inward-Rectifying Current in the Plasma Membrane of the Calcifying Marine Phytoplankton

    E-Print Network [OSTI]

    Taylor, Alison

    A Novel Cl Inward-Rectifying Current in the Plasma Membrane of the Calcifying Marine Phytoplankton cation currents and in some cases evoked action potential currents. We propose that these major ion such as Emiliania huxleyi and Coccolithus pelagicus of- ten form massive monospecific blooms in oceanic waters

  4. SCOSTA-CL Specifications v 1.2 Issue Date July 06, 2007

    E-Print Network [OSTI]

    Moona, Rajat

    Ministry of Communication and Information Technology Government of India Indian Institute of Technology Kanpur #12;SCOSTA-CL Specifications Page 2 of 42 History 1. March 15, 2007 First Release Version 1.0 2.01 4. July 06, 2007 Public Release of Draft Version 1.2 Table of Contents History

  5. Study of the nanobubble phase of aqueous NaCl solutions by dynamic light scattering

    SciTech Connect (OSTI)

    Bunkin, N F; Shkirin, A V [A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Burkhanov, I S; Chaikov, L L [P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Lomkova, A K [N.E. Bauman Moscow State Technical University, Moscow (Russian Federation)

    2014-11-30

    Aqueous NaCl solutions with different concentrations have been investigated by dynamic scattering of laser radiation. It is experimentally shown that these solutions contain scattering particles with a wide size distribution in a range of ?10 – 100 nm. The experimental results indirectly confirm the existence of quasi-stable gas nanobubbles in the bulk of aqueous ionic solutions. (light scattering)

  6. JOURNAL DE PHYSIQUE Colloque Cl, Suppl6ment au n03, Tome 49, Mars 1988

    E-Print Network [OSTI]

    Boyer, Edmond

    JOURNAL DE PHYSIQUE Colloque Cl, Suppl6ment au n03, Tome 49, Mars 1988 SOLAR PHYSICS FROM SPACELAB systematic observations of the solar atmosphere at high resolution and to measure specific global properties of the sun. The Solar Optical Universal Polarimeter recorded series of white light images with which

  7. Electrochemistry of LiCl-Li2O-H2O Molten Salt Systems

    SciTech Connect (OSTI)

    Natalie J. Gese; Batric Pesic

    2013-03-01

    Uranium can be recovered from uranium oxide (UO2) spent fuel through the combination of the oxide reduction and electrorefining processes. During oxide reduction, the spent fuel is introduced to molten LiCl-Li2O salt at 650 degrees C and the UO2 is reduced to uranium metal via two routes: (1) electrochemically, and (2) chemically by lithium metal (Li0) that is produced electrochemically. However, the hygroscopic nature of both LiCl and Li2O leads to the formation of LiOH, contributing hydroxyl anions (OH-), the reduction of which interferes with the Li0 generation required for the chemical reduction of UO2. In order for the oxide reduction process to be an effective method for the treatment of uranium oxide fuel, the role of moisture in the LiCl-Li2O system must be understood. The behavior of moisture in the LiCl-Li2O molten salt system was studied using cyclic voltammetry, chronopotentiometry and chronoamperometry, while reduction to hydrogen was confirmed with gas chromatography.

  8. Don Juan Pond, Antarctica: Near-surface CaCl2-brine feeding Earth's most saline

    E-Print Network [OSTI]

    Marchant, David R.

    Don Juan Pond, Antarctica: Near-surface CaCl2-brine feeding Earth's most saline lake on Earth. We report on new studies of Don Juan Pond (DJP), which exists at the upper limit of ephemeral on Juan Pond (DJP), found at the lowest point in the South Fork of Upper Wright Valley, Antarctica (Figure

  9. Correlated energy disposal and scattering dynamics of the Cl CD4(m3 2) reaction

    E-Print Network [OSTI]

    Zare, Richard N.

    Correlated energy disposal and scattering dynamics of the Cl þ CD4(m3 ¼ 2) reaction HANS A-of-flight spectrometer. After preparing the first overtone of the antisymmetric stretch (3 ¼ 2) with direct IR excitation to the stretch­bend combination (11 121 1) band. The product correlated energy disposal and the scattering

  10. Mass of astrophysically relevant $^{31}$Cl and the breakdown of the isobaric multiplet mass equation

    E-Print Network [OSTI]

    Kankainen, A; Eronen, T; Hakala, J; Jokinen, A; Koponen, J; Moore, I D; Nesterenko, D; Reinikainen, J; Rinta-Antila, S; Voss, A; Äystö, J

    2015-01-01

    The mass of $^{31}$Cl has been measured with the JYFLTRAP double Penning trap mass spectrometer at the Ion-Guide Isotope Separator On-Line (IGISOL) facility. The determined mass-excess value, -7034.7(34) keV, is 15 times more precise than in the Atomic Mass Evaluation 2012. The quadratic form of the isobaric multiplet mass equation for the T=3/2 quartet at A=31 fails ($\\chi^2_n$=11.6) and a non-zero cubic term, d=-3.49(44) keV, is obtained when the new mass value is adopted. $^{31}$Cl has been found to be less proton-bound with a proton separation energy of $S_p$=265(4) keV. Energies for the excited states in $^{31}$Cl and the photodisintegration rate on $^{31}$Cl have been determined with significantly improved precision using the new $S_p$ value. The improved photodisintegration rate helps to constrain astrophysical conditions where $^{30}$S can act as a waiting point in the rapid proton capture process in type I x-ray bursts.

  11. Mass of astrophysically relevant $^{31}$Cl and the breakdown of the isobaric multiplet mass equation

    E-Print Network [OSTI]

    A. Kankainen; L. Canete; T. Eronen; J. Hakala; A. Jokinen; J. Koponen; I. D. Moore; D. Nesterenko; J. Reinikainen; S. Rinta-Antila; A. Voss; J. Äystö

    2015-11-25

    The mass of $^{31}$Cl has been measured with the JYFLTRAP double Penning trap mass spectrometer at the Ion-Guide Isotope Separator On-Line (IGISOL) facility. The determined mass-excess value, -7034.7(34) keV, is 15 times more precise than in the Atomic Mass Evaluation 2012. The quadratic form of the isobaric multiplet mass equation for the T=3/2 quartet at A=31 fails ($\\chi^2_n$=11.6) and a non-zero cubic term, d=-3.49(44) keV, is obtained when the new mass value is adopted. $^{31}$Cl has been found to be less proton-bound with a proton separation energy of $S_p$=265(4) keV. Energies for the excited states in $^{31}$Cl and the photodisintegration rate on $^{31}$Cl have been determined with significantly improved precision using the new $S_p$ value. The improved photodisintegration rate helps to constrain astrophysical conditions where $^{30}$S can act as a waiting point in the rapid proton capture process in type I x-ray bursts.

  12. Graduation/ Student assistent (9 months) combination: Gas production decline due to salt deposition (NaCl)

    E-Print Network [OSTI]

    Vuik, Kees

    (NaCl) Mentors: Hans Bruining1 (reactive flow, chemistry), Han Velthuis/Aris Twerda (TNO Oil & Gas: · The source of salt in the gas reservoir · The location, rate and field condition dependence of salt precipitation. · How to rinse the near-well bore reservoir efficiently (frequency and amount fresh water washes

  13. Ca2 -dependent activation of Cl currents in Xenopus oocytes is modulated by voltage

    E-Print Network [OSTI]

    Parker, Ian

    a fast electrical block to polyspermy in the egg (7). Voltage-clamp recordings of Cl current provide- acteristics that complicate interpretation of the under- lying Ca2 signals (11, 21). In particular, it remains sources of Ca2 can be discriminated by recording ICl,Ca evoked by hyperpolarizing voltage steps because

  14. Kinetic study of the collisional quenching of spinorbitally excited atomic chlorine, Cl(2

    E-Print Network [OSTI]

    Kono, Mitsu

    Kinetic study of the collisional quenching of spin­orbitally excited atomic chlorine, Cl(2 P1 Solar-Terrestrial Environment Laboratory and Graduate School of Science, Nagoya University, 3 interactions, there have been a number of studies on the kinetics of physical and chemical relaxation processes

  15. KEITH SCHAEFER brings more than 25 years of leadership experience to his position of Chairman, City Paper Box, an international manufacturer of paper products serving the food service industry. Throughout his career, he has held a

    E-Print Network [OSTI]

    Sibille, Etienne

    Paper Box, an international manufacturer of paper products serving the food service industry. Throughout

  16. The effect of second phase particles in the fiber/matrix interfacial strength of carbon fiber reinforced thermoset composites 

    E-Print Network [OSTI]

    Lu, Chung-Yuan

    1996-01-01

    The fiber/matrix interfacial strength of graphite fiber reinforced epoxy (DGEBF cured with diprimary amine (9,9-bis[3-methyl-4-aminophenyl]fluorene) has been studied to determine the effect of second phase additions of rubber and glass...

  17. Achieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber

    E-Print Network [OSTI]

    Chao, Shih-Ho

    : rapid increase in the permeability occurred for plain concrete under stress; increasep y p ; remainedAchieving "Green" Concrete Through The Use Of High Performance FiberThe Use Of High Performance Fiber Reinforced Concrete ShihShih--Ho Chao,Ho Chao, Ph.DPh.D Assistant Professor, Department of Civil

  18. Hybrid glass coatings for optical fibers: effect of coating thickness on strength and dynamic fatigue characteristics of silica fibers

    E-Print Network [OSTI]

    Matthewson, M. John

    Hybrid glass coatings for optical fibers: effect of coating thickness on strength and dynamic coatings. Recently developed sol-gel derived inorganic- organic hybrid materials called hybrid glass offered improved protective performance as compared to standard dual polymer coated fibers [1

  19. "Little Box Challenge" Inverters Arrive at NREL - News Releases | NREL

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXuRod Hunt (208) 386-52542 120"Geek"Little Box

  20. Completely inverted ClO vibrational distribution from OClO,,2 A2 24,0,0...

    E-Print Network [OSTI]

    Nijmegen, University of

    phase leads almost exclusively to the formation of ClO radi- cals with only a few percent mode dependent therein . The major dis- sociation channel in the gas phase, ClO O, which is the subject in the present

  1. Characterization of acid flux in osteoclasts from patients harboring a G215R mutation in ClC-7

    SciTech Connect (OSTI)

    Henriksen, Kim [Nordic Bioscience A/S, Herlev Hovedgade 207, DK-2730 Herlev (Denmark)], E-mail: kh@nordicbioscience.com; Gram, Jeppe [Department of Endocrinology, Ribe County Hospital, Esbjerg (Denmark)], E-mail: Jeppe.Gram@svs.regionsyddanmark.dk; Neutzsky-Wulff, Anita Vibsig [Nordic Bioscience A/S, Herlev Hovedgade 207, DK-2730 Herlev (Denmark)], E-mail: avn@nordicbioscience.com; Jensen, Vicki Kaiser [Nordic Bioscience A/S, Herlev Hovedgade 207, DK-2730 Herlev (Denmark)], E-mail: vkj@nordicbioscience.com; Dziegiel, Morten H. [HS Blodbank, Copenhagen University Hospital, Copenhagen (Denmark)], E-mail: morten.dziegiel@rh.hosp.dk; Bollerslev, Jens [Section of Endocrinology, Dept. of Medicine, National University Hospital, Oslo (Norway)], E-mail: jens.bollerslev@medisin.uio.no; Karsdal, Morten A. [Nordic Bioscience A/S, Herlev Hovedgade 207, DK-2730 Herlev (Denmark)], E-mail: mk@nordicbioscience.com

    2009-01-23

    The chloride-proton antiporter ClC-7 has been speculated to be involved in acidification of the lysosomes and the resorption lacunae in osteoclasts; however, neither direct measurements of chloride transport nor acidification have been performed. Human osteoclasts harboring a dominant negative mutation in ClC-7 (G215R) were isolated, and used these to investigate bone resorption measured by CTX-I, calcium release and pit scoring. The actin cytoskeleton of the osteoclasts was also investigated. ClC-7 enriched membranes from the osteoclasts were isolated, and used to test acidification rates in the presence of a V-ATPase and a chloride channel inhibitor, using a H{sup +} and Cl{sup -} driven approach. Finally, acidification rates in ClC-7 enriched membranes from ADOII osteoclasts and their corresponding controls were compared. Resorption by the G215R osteoclasts was reduced by 60% when measured by both CTX-I, calcium release, and pit area when comparing to age and sex matched controls. In addition, the ADOII osteoclasts showed no differences in actin ring formation. Finally, V-ATPase and chloride channel inhibitors completely abrogated the H{sup +} and Cl{sup -} driven acidification. Finally, the acid influx was reduced by maximally 50% in the ClC-7 deficient membrane fractions when comparing to controls. These data demonstrate that ClC-7 is essential for bone resorption, via its role in acidification of the lysosomes and resorption lacunae in osteoclasts.

  2. PAN@FIRE: Overview of the Cross-Language !ndian News Story Search (CL!NSS) Track

    E-Print Network [OSTI]

    Rosso, Paolo

    PAN@FIRE: Overview of the Cross-Language !ndian News Story Search (CL!NSS) Track Parth Gupta1 , Paul Clough2 , Paolo Rosso1 , and Mark Stevenson2 1 NLE Lab - ELiRF, Universitat Politècnica de-language India news story search (CL!NSS), focuses to address the news story linking task across languages

  3. Fiber optical assembly for fluorescence spectrometry

    DOE Patents [OSTI]

    Carpenter, II, Robert W. (Pagosa Springs, CO); Rubenstein, Richard (Staten Island, NY); Piltch, Martin (Los Alamos, NM); Gray, Perry (Los Alamos, NM)

    2010-12-07

    A system for analyzing a sample for the presence of an analyte in a sample. The system includes a sample holder for containing the sample; an excitation source, such as a laser, and at least one linear array radially disposed about the sample holder. Radiation from the excitation source is directed to the sample, and the radiation induces fluorescent light in the sample. Each linear array includes a plurality of fused silica optical fibers that receive the fluorescent light and transmits a fluorescent light signal from the first end to an optical end port of the linear array. An end port assembly having a photo-detector is optically coupled to the optical end port. The photo-detector detects the fluorescent light signal and converts the fluorescent light signal into an electrical signal.

  4. Carbon fiber electrode for redox flow battery

    SciTech Connect (OSTI)

    Inoue, M.; Tsuzuki, Y.; Iizuka, Y.; Shimada, M.

    1987-03-01

    Advanced secondary batteries have been developed as electrical energy storage systems for use in electrical utility load-levelling and stand-alone photovoltaic installations. Among them, the redox flow system based on aqueous iron and chromium redox couple is one of the most advanced. An important key to its feasibility is electrode fabrication. Woven and non-woven fabrics of carbon fibers have been used as thin but three dimensional electrodes of the redox flow system in view of their electric conductivity, chemical stability, and economy. One of the electrochemical problems of iron-chromium redox battery related to the electrode is the slow reaction rate of reduction and oxidation of chromium complex ion. As the electron transfer rate of chromium complex ion is lower than that of iron ion, the voltaic efficiency of the battery tends to decrease.

  5. Stable nonlinear Mach-Zehnder fiber switch

    DOE Patents [OSTI]

    Digonnet, Michel J. F. (Palo Alto, CA); Shaw, H. John (Palo Alto, CA); Pantell, Richard H. (Menlo Park, CA); Sadowski, Robert W. (Camp Doha, KW)

    1999-01-01

    An all-optical fiber switch is implemented within a short Mach-Zehnder interferometer configuration. The Mach-Zehnder switch is constructed to have a high temperature stability so as to minimize temperature gradients and other thermal effects which result in undesirable instability at the output of the switch. The Mach-Zehnder switch of the preferred embodiment is advantageously less than 2 cm in length between couplers to be sufficiently short to be thermally stable, and full switching is accomplished by heavily doping one or both of the arms between the couplers so as to provide a highly nonlinear region within one or both of the arms. A pump input source is used to affect the propagation characteristics of one of the arms to control the output coupling ratio of the switch. Because of the high nonlinearity of the pump input arm, low pump powers can be used, thereby alleviating difficulties and high cost associated with high pump input powers.

  6. RADIATION EFFECTS ON EPOXY CARBON FIBER COMPOSITE

    SciTech Connect (OSTI)

    Hoffman, E

    2008-05-30

    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.

  7. Electrical and chemical properties of XeCl*(308 nm) exciplex lamp created by a dielectric barrier discharge

    SciTech Connect (OSTI)

    Baadj, S.; Harrache, Z., E-mail: zharrache@yahoo.com; Belasri, A. [Université des Sciences et de la Technologie d’Oran, USTO-MB, Laboratoire de Physique des Plasmas, Matériaux Conducteurs et leurs Application (LPPMCA) (Algeria)

    2013-12-15

    The aim of this work is to highlight, through numerical modeling, the chemical and the electrical characteristics of xenon chloride mixture in XeCl* (308 nm) excimer lamp created by a dielectric barrier discharge. A temporal model, based on the Xe/Cl{sub 2} mixture chemistry, the circuit and the Boltzmann equations, is constructed. The effects of operating voltage, Cl{sub 2} percentage in the Xe/Cl{sub 2} gas mixture, dielectric capacitance, as well as gas pressure on the 308-nm photon generation, under typical experimental operating conditions, have been investigated and discussed. The importance of charged and excited species, including the major electronic and ionic processes, is also demonstrated. The present calculations show clearly that the model predicts the optimal operating conditions and describes the electrical and chemical properties of the XeCl* exciplex lamp.

  8. Raman fiber optic probe assembly for use in hostile environments

    DOE Patents [OSTI]

    Schmucker, John E. (Hurt, VA); Falk, Jon C. (Pittsburgh, PA); Archer, William B. (Bethel Park, PA); Blasi, Raymond J. (Harrison City, PA)

    2000-01-01

    This invention provides a device for Raman spectroscopic measurement of composition and concentrations in a hostile environment by the use of a first fiber optic as a means of directing high intensity monochromatic light from a laser to the hostile environment and a second fiber optic to receive the lower intensity scattered light for transmittal to a monochromator for analysis. To avoid damage to the fiber optics, they are protected from the hostile environment. A preferred embodiment of the Raman fiber optic probe is able to obtain Raman spectra of corrosive gases and solutions at temperatures up to 600.degree. F. and pressures up to 2000 psi. The incident exciting fiber optic cable makes an angle of substantially 90.degree. with the collecting fiber optic cable. This 90.degree. geometry minimizes the Rayleigh scattering signal picked up by the collecting fiber, because the intensity of Rayleigh scattering is lowest in the direction perpendicular to the beam path of the exciting light and therefore a 90.degree. scattering geometry optimizes the signal to noise ratio.

  9. Carbon fiber composite characterization in adverse thermal environments.

    SciTech Connect (OSTI)

    Gomez-Vasquez, Sylvia; Brown, Alexander L.; Hubbard, Joshua A.; Ramirez, Ciro J.; Dodd, Amanda B.

    2011-05-01

    The behavior of carbon fiber aircraft composites was studied in adverse thermal environments. The effects of resin composition and fiber orientation were measured in two test configurations: 102 by 127 millimeter (mm) test coupons were irradiated at approximately 22.5 kW/m{sup 2} to measure thermal response, and 102 by 254 mm test coupons were irradiated at approximately 30.7 kW/m{sup 2} to characterize piloted flame spread in the vertically upward direction. Carbon-fiber composite materials with epoxy and bismaleimide resins, and uni-directional and woven fiber orientations, were tested. Bismaleimide samples produced less smoke, and were more resistant to flame spread, as expected for high temperature thermoset resins with characteristically lower heat release rates. All materials lost approximately 20-25% of their mass regardless of resin type, fiber orientation, or test configuration. Woven fiber composites displayed localized smoke jetting whereas uni-directional composites developed cracks parallel to the fibers from which smoke and flames emanated. Swelling and delamination were observed with volumetric expansion on the order of 100% to 200%. The purpose of this work was to provide validation data for SNL's foundational thermal and combustion modeling capabilities.

  10. CREEP MODELING FOR INJECTION-MOLDED LONG-FIBER THERMOPLASTICS

    SciTech Connect (OSTI)

    Nguyen, Ba Nghiep; Kunc, Vlastimil; Bapanapalli, Satish K.

    2008-06-30

    This paper proposes a model to predict the creep response of injection-molded long-fiber thermoplastics (LFTs). The model accounts for elastic fibers embedded in a thermoplastic resin that exhibits the nonlinear viscoelastic behavior described by the Schapery’s model. It also accounts for fiber length and orientation distributions in the composite formed by the injection-molding process. Fiber length and orientation distributions were measured and used in the analysis that applies the Eshelby’s equivalent inclusion method, the Mori-Tanaka assumption (termed as the Eshelby-Mori-Tanaka approach) and the fiber orientation averaging technique to compute the overall strain increment resulting from an overall constant applied stress during a given time increment. The creep model for LFTs has been implemented in the ABAQUS finite element code via user-subroutines and has been validated against the experimental creep data obtained for long-glass-fiber/polypropylene specimens. The effects of fiber orientation and length distributions on the composite creep response are determined and discussed.

  11. Trial-Run of a Junction-Box Attachment Test for Use in Photovoltaic Module Qualification: Preprint

    SciTech Connect (OSTI)

    Miller, D. C.; Deibert, S. L.; Wohlgemuth, J. H.

    2014-06-01

    Engineering robust adhesion of the junction box (j-box) is a hurdle typically encountered by photovoltaic module manufacturers during product development and manufacturing process control. There are historical incidences of adverse effects (e.g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the 'damp-heat,' 'thermal-cycle,' or 'creep' tests within the IEC qualification protocol is proposed to verify the basic robustness of the adhesion system. The details of the proposed test are described, in addition to a trial-run of the test procedure. The described experiments examine four moisture-cured silicones, four foam tapes, and a hot-melt adhesive used in conjunction with glass, KPE, THV, and TPE substrates. For the purpose of validating the experiment, j-boxes were adhered to a substrate, loaded with a prescribed weight, and then subjected to aging. The replicate mock-modules were aged in an environmental chamber (at 85 degrees C/85% relative humidity for 1000 hours; then 100 degrees C/<10% relative humidity for 200 hours) or fielded in Golden (CO), Miami (FL), and Phoenix (AZ) for one year. Attachment strength tests, including pluck and shear test geometries, were also performed on smaller component specimens.

  12. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, T.M.; Lowden, R.A.

    1990-05-29

    An improved cathode structure is described for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 C can be used.

  13. Observation of images in graded-index multimode fiber 

    E-Print Network [OSTI]

    Begum, Sultana

    1992-01-01

    . As the length of the multimode fiber changes, the reflection from the multimode fiber end also changes periodically with a constant beat length. This is accomplished by hand polishing the multimode fiber on I tun grit size aluminium oxide paper. The experiment... holds the glued tubing and it goes inside another block of materials which has a threaded cylindrical brass block (32 threads per inch) at the bottom and a marked aluminium round slab at the top. The slab has a total of 12g divisions along its...

  14. Nonlinear transmission through a tapered fiber in rubidium vapor

    E-Print Network [OSTI]

    S. M. Hendrickson; T. B. Pittman; J. D. Franson

    2008-12-01

    Sub-wavelength diameter tapered optical fibers surrounded by rubidium vapor can undergo a substantial decrease in transmission at high atomic densities due to the accumulation of rubidium atoms on the surface of the fiber. Here we demonstrate the ability to control these changes in transmission using light guided within the taper. We observe transmission through a tapered fiber that is a nonlinear function of the incident power. This effect can also allow a strong control beam to change the transmission of a weak probe beam.

  15. Use of a fiber optic probe for organic species determination

    DOE Patents [OSTI]

    Ekechukwu, Amy A. (Augusta, GA)

    1996-01-01

    A fiber optic probe for remotely detecting the presence and concentration organic species in aqueous solutions. The probe includes a cylindrical housing with an organic species indicator, preferably diaminonaphthyl sulfonic acid adsorbed in a silica gel (DANS-modified gel), contained in the probe's distal end. The probe admits aqueous solutions to the probe interior for mixing within the DANS-modified gel. An optical fiber transmits light through the DANS-modified gel while the indicator reacts with organic species present in the solution, thereby shifting the location of the fluorescent peak. The altered light is reflected to a receiving fiber that carries the light to a spectrophotometer or other analysis device.

  16. Distributed Fiber Optic Gas Sensing for Harsh Environment

    SciTech Connect (OSTI)

    Juntao Wu

    2008-03-14

    This report summarizes work to develop a novel distributed fiber-optic micro-sensor that is capable of detecting common fossil fuel gases in harsh environments. During the 32-month research and development (R&D) program, GE Global Research successfully synthesized sensing materials using two techniques: sol-gel based fiber surface coating and magnetron sputtering based fiber micro-sensor integration. Palladium nanocrystalline embedded silica matrix material (nc-Pd/Silica), nanocrystalline palladium oxides (nc-PdO{sub x}) and palladium alloy (nc-PdAuN{sub 1}), and nanocrystalline tungsten (nc-WO{sub x}) sensing materials were identified to have high sensitivity and selectivity to hydrogen; while the palladium doped and un-doped nanocrystalline tin oxide (nc-PdSnO{sub 2} and nc-SnO{sub 2}) materials were verified to have high sensitivity and selectivity to carbon monoxide. The fiber micro-sensor comprises an apodized long-period grating in a single-mode fiber, and the fiber grating cladding surface was functionalized by above sensing materials with a typical thickness ranging from a few tens of nanometers to a few hundred nanometers. GE found that the morphologies of such sensing nanomaterials are either nanoparticle film or nanoporous film with a typical size distribution from 5-10 nanometers. nc-PdO{sub x} and alloy sensing materials were found to be highly sensitive to hydrogen gas within the temperature range from ambient to 150 C, while nc-Pd/Silica and nc-WO{sub x} sensing materials were found to be suitable to be operated from 150 C to 500 C for hydrogen gas detection. The palladium doped and un-doped nc-SnO{sub 2} materials also demonstrated sensitivity to carbon monoxide gas at approximately 500 C. The prototyped fiber gas sensing system developed in this R&D program is based on wavelength-division-multiplexing technology in which each fiber sensor is identified according to its transmission spectra features within the guiding mode and cladding modes. The interaction between the sensing material and fossil fuel gas results in a refractive index change and optical absorption in the sensing layer. This induces mode coupling strength and boundary conditions changes and thereby shifts the central wavelengths of the guiding mode and cladding modes propagation. GE's experiments demonstrated that such an interaction between the fossil fuel gas and sensing material not only shifts the central wavelengths of the guide mode and cladding modes propagation, but also alters their power loss characteristics. The integrated fiber gas sensing system includes multiple fiber gas sensors, fiber Bragg grating-based temperature sensors, fiber optical interrogator, and signal processing software.

  17. Activated carbon fiber composite material and method of making

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Weaver, Charles E. (Knoxville, TN); Chilcoat, Bill R. (Knoxville, TN); Derbyshire, Frank (Lexington, KY); Jagtoyen, Marit (Lexington, KY)

    2001-01-01

    An activated carbon fiber composite for separation and purification, or catalytic processing of fluids is described. The activated composite comprises carbon fibers rigidly bonded to form an open, permeable, rigid monolith capable of being formed to near-net-shape. Separation and purification of gases are effected by means of a controlled pore structure that is developed in the carbon fibers contained in the composite. The open, permeable structure allows the free flow of gases through the monolith accompanied by high rates of adsorption. By modification of the pore structure and bulk density the composite can be rendered suitable for applications such as gas storage, catalysis, and liquid phase processing.

  18. Activated carbon fiber composite material and method of making

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Weaver, Charles E. (Knoxville, TN); Chilcoat, Bill R. (Knoxville, TN); Derbyshire, Frank (Lexington, KY); Jagtoyen, Marit (Lexington, KY)

    2000-01-01

    An activated carbon fiber composite for separation and purification, or catalytic processing of fluids is described. The activated composite comprises carbon fibers rigidly bonded to form an open, permeable, rigid monolith capable of being formed to near-net-shape. Separation and purification of gases are effected by means of a controlled pore structure that is developed in the carbon fibers contained in the composite. The open, permeable structure allows the free flow of gases through the monolith accompanied by high rates of adsorption. By modification of the pore structure and bulk density the composite can be rendered suitable for applications such as gas storage, catalysis, and liquid phase processing.

  19. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, Theodore M. (Knoxville, TN); Lowden, Richard A. (Knoxville, TN)

    1990-01-01

    An improved cathode structure for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 deg. C can be used.

  20. Fabrication of fiber supported ionic liquids and methods of use

    DOE Patents [OSTI]

    Luebke, David R; Wickramanayake, Shan

    2013-02-26

    One or more embodiments relates to the production of a fabricated fiber having an asymmetric polymer network and having an immobilized liquid such as an ionic liquid within the pores of the polymer network. The process produces the fabricated fiber in a dry-wet spinning process using a homogenous dope solution, providing significant advantage over current fabrication methods for liquid-supporting polymers. The fabricated fibers may be effectively utilized for the separation of a chemical species from a mixture based on the selection of the polymer, the liquid, and the solvent utilized in the dope.