National Library of Energy BETA

Sample records for detergents synthetic fibers

  1. Silica and acid-detergent fiber content of five varieties of bermudagrass 

    E-Print Network [OSTI]

    Jungman, Frederick Michael

    1971-01-01

    were grown on four different soils and at two fertility levels to determine variety, soil, and fertility effects on silica and acid-detergent fiber content of the plant tissues. Initial growth was harvested at three weeks of age and regrowth at five... content of bermudagrass. An average of three and five weeks of growth . 45 A7 Acid-detergent fiber content (T) of tissue of bermudagrass varieties grown on four soils at three and five weeks of growth 46 Silica content (X) of tissue of bermudagrass...

  2. Behavior of Concrete Panels Reinforced with Synthetic Fibers, Mild Steel, and GFRP Composites Subjected to Blasts

    SciTech Connect (OSTI)

    C. P. Pantelides; T. T. Garfield; W. D. Richins; T. K. Larson; J. E. Blakeley

    2012-03-01

    The paper presents experimental data generated for calibrating finite element models to predict the performance of reinforced concrete panels with a wide range of construction details under blast loading. The specimens were 1.2 m square panels constructed using Normal Weight Concrete (NWC) or Fiber Reinforced Concrete (FRC). FRC consisted of macro-synthetic fibers dispersed in NWC. Five types of panels were tested: NWC panels with steel bars; FRC panels without additional reinforcement; FRC panels with steel bars; NWC panels with glass fiber reinforced polymer (GFRP) bars; and NWC panels reinforced with steel bars and external GFRP laminates on both faces. Each panel type was constructed with three thicknesses: 152 mm, 254 mm, and 356 mm. FRC panels with steel bars had the best performance for new construction. NWC panels reinforced with steel bars and external GFRP laminates on both faces had the best performance for strengthening or rehabilitation of existing structures. The performance of NWC panels with GFRP bars was strongly influenced by the bar spacing. The behavior of the panels is classified in terms of damage using immediate occupancy, life safety, and near collapse performance levels. Preliminary dynamic simulations are compared to the experimental results.

  3. Multi-chord fiber-coupled interferometry of supersonic plasma jets andcomparisons with synthetic data

    SciTech Connect (OSTI)

    Merritt, Elizabeth C.; Lynn, Alan G.; Gilmore, Mark A.; Thoma, Carsten; Loverich, John; Hsu, Scott C.

    2012-05-03

    A multi-chord fiber-coupled interferometer [Merritt et al., Rev. Sci. Instrum. 83, 033506 (2012)] is being used to make time-resolved density measurements of supersonic argon plasma jets on the Plasma Liner Experiment [Hsu et al., Bull. Amer. Phys. Soc. 56, 307 (2011)]. The long coherence length of the laser (> 10 m) allows signal and reference path lengths to be mismatched by many meters without signal degradation, making for a greatly simplified optical layout. Measured interferometry phase shifts are consistent with a partially ionized plasma in which an initially positive phase shift becomes negative when the ionization fraction drops below a certain threshold. In this case, both free electrons and bound electrons in ions and neutral atoms contribute to the index of refraction. This paper illustrates how the interferometry data, aided by numerical modeling, are used to derive total jet density, jet propagation velocity ({approx} 15-50 km/s), jet length ({approx} 20-100 cm), and 3D expansion.

  4. Synthetic guide star generation

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA) [Castro Valley, CA; Page, Ralph H. (Castro Valley, CA) [Castro Valley, CA; Ebbers, Christopher A. (Livermore, CA) [Livermore, CA; Beach, Raymond J. (Livermore, CA) [Livermore, CA

    2008-06-10

    A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.

  5. Synthetic guide star generation

    SciTech Connect (OSTI)

    Payne, Stephen A.; Page, Ralph H.; Ebbers, Christopher A.; Beach, Raymond J.

    2004-03-09

    A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.

  6. Synthetic and Mechanistic Chemistry

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

    isotopes for biological applications Aaron S. Anderson: Synthetic chemistry of biosensors Andrew M. Dattelbaum: Synthetic chemistry and nanoparticles Sponsors, Funding...

  7. Outer membrane protein A of E. coli folds into detergent micelles, but not in the

    E-Print Network [OSTI]

    Kleinschmidt, Jörg H.

    Outer membrane protein A of E. coli folds into detergent micelles, but not in the presence-barrel membrane proteins, folding of OmpA was studied as a function of the hydrophobic chain length, the chemical; membrane protein folding; outer membrane protein A; porin; protein­detergent interaction; protein

  8. P R O T O C O L N O T E Detergent Removal with

    E-Print Network [OSTI]

    Lebendiker, Mario

    , CMC). Micelle formation results in aggregation of the detergent and leads to gross changes Corporation or an affiliated company, Bedford, MA. All rights reserved. Printed with soy inks on recycled

  9. Insight into the Structure of Light Harvesting Complex II and its Stabilization in Detergent Solution

    SciTech Connect (OSTI)

    Cardoso, Mateus B [ORNL; Smolensky, Dmitriy [ORNL; Heller, William T [ORNL; O'Neill, Hugh Michael [ORNL

    2009-01-01

    The structure of spinach light-harvesting complex II (LHC II), stabilized in a solution of the detergent n-octyl-{beta}-d-glucoside (BOG), was investigated by small-angle neutron scattering (SANS). Physicochemical characterization of the isolated complex indicated that it was pure (>95%) and also in its native trimeric state. SANS with contrast variation was used to investigate the properties of the protein-detergent complex at three different H{sub 2}O/D{sub 2}O contrast match points, enabling the scattering properties of the protein and detergent to be investigated independently. The topological shape of LHC II, determined using ab initio shape restoration methods from the SANS data at the contrast match point of BOG, was consistent with the X-ray crystallographic structure of LHC II (Liu et al. Nature 2004 428, 287-292). The interactions of the protein and detergent were investigated at the contrast match point for the protein and also in 100% D{sub 2}O. The data suggested that BOG micelle structure was altered by its interaction with LHC II, but large aggregate structures were not formed. Indirect Fourier transform analysis of the LHC II/BOG scattering curves showed that the increase in the maximum dimension of the protein-detergent complex was consistent with the presence of a monolayer of detergent surrounding the protein. A model of the LHC II/BOG complex was generated to interpret the measurements made in 100% D{sub 2}O. This model adequately reproduced the overall size of the LHC II/BOG complex, but demonstrated that the detergent does not have a highly regular shape that surrounds the hydrophobic periphery of LHC II. In addition to demonstrating that natively structured LHC II can be produced for functional characterization and for use in artificial solar energy applications, the analysis and modeling approaches described here can be used for characterizing detergent-associated {alpha}-helical transmembrane proteins.

  10. Design and implementation of nanoscale fiber mechanical testing apparatus

    E-Print Network [OSTI]

    Brayanov, Jordan, 1981-

    2004-01-01

    The rapid growth in the synthetic manufacturing industry demands higher resolution mechanical testing devices, capable of working with nanoscale fibers. A new device has been developed to perform single-axis tensile tests ...

  11. 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.

  12. 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.

  13. 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,...

  14. Biodegradable synthetic bone composites

    DOE Patents [OSTI]

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

    2013-01-01

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

  15. Lattice analogy of area-difference elasticity model for lipid-detergent bilayer vesiculation

    E-Print Network [OSTI]

    L. V. Elnikova

    2006-08-04

    The vesiculation process was examined in the lipid-detergent solution (dimyristoyl-sn-glycero-phoshatidylcholine/octaethylleneglycol n-dodecyl ether/water), using small-angle neutron scattering experiments \\cite{1}. When observing vesiculation proceeds from rod-like micelles to unilamellar vesicles, the transformation is induced by jump-like temperature increase and a monotonic increase in detergent concentration. Our numerical estimations of the vesicle shape parameters (the elasticity coefficients and its fraction on a macroscopic scale) are based upon the area-difference elasticity model \\cite{2, 3}. Thus, we composed the numerical Monte Carlo method, which connects the macroscopic and microscopic scales by the concept of self-avoiding random surfaces.

  16. Systematic analysis of protein–detergent complexes applying dynamic light scattering to optimize solutions for crystallization trials

    SciTech Connect (OSTI)

    Meyer, Arne [University of Hamburg, c/o DESY, Building 22a, Notkestrasse 85, 22603 Hamburg (Germany); Dierks, Karsten [University of Hamburg, c/o DESY, Building 22a, Notkestrasse 85, 22603 Hamburg (Germany); XtalConcepts, Marlowring 19, 22525 Hamburg (Germany); Hussein, Rana [University of Hamburg, c/o DESY, Building 22a, Notkestrasse 85, 22603 Hamburg (Germany); Brillet, Karl [ESBS, Pôle API, 300 Boulevard Sébastien Brant, CS10413, 67412 Illkirch CEDEX (France); Brognaro, Hevila [Săo Paulo State University, UNESP/IBILCE, Caixa Postal 136, Săo José do Rio Preto-SP, 15054 (Brazil); Betzel, Christian, E-mail: christian.betzel@uni-hamburg.de [University of Hamburg, c/o DESY, Building 22a, Notkestrasse 85, 22603 Hamburg (Germany)

    2015-01-01

    Application of in situ dynamic light scattering to solutions of protein–detergent complexes permits characterization of these complexes in samples as small as 2 µl in volume. Detergents are widely used for the isolation and solubilization of membrane proteins to support crystallization and structure determination. Detergents are amphiphilic molecules that form micelles once the characteristic critical micelle concentration (CMC) is achieved and can solubilize membrane proteins by the formation of micelles around them. The results are presented of a study of micelle formation observed by in situ dynamic light-scattering (DLS) analyses performed on selected detergent solutions using a newly designed advanced hardware device. DLS was initially applied in situ to detergent samples with a total volume of approximately 2 µl. When measured with DLS, pure detergents show a monodisperse radial distribution in water at concentrations exceeding the CMC. A series of all-transn-alkyl-?-d-maltopyranosides, from n-hexyl to n-tetradecyl, were used in the investigations. The results obtained verify that the application of DLS in situ is capable of distinguishing differences in the hydrodynamic radii of micelles formed by detergents differing in length by only a single CH{sub 2} group in their aliphatic tails. Subsequently, DLS was applied to investigate the distribution of hydrodynamic radii of membrane proteins and selected water-insoluble proteins in presence of detergent micelles. The results confirm that stable protein–detergent complexes were prepared for (i) bacteriorhodopsin and (ii) FetA in complex with a ligand as examples of transmembrane proteins. A fusion of maltose-binding protein and the Duck hepatitis B virus X protein was added to this investigation as an example of a non-membrane-associated protein with low water solubility. The increased solubility of this protein in the presence of detergent could be monitored, as well as the progress of proteolytic cleavage to separate the fusion partners. This study demonstrates the potential of in situ DLS to optimize solutions of protein–detergent complexes for crystallization applications.

  17. 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...

  18. Memprot: a program to model the detergent corona around a membrane protein based on SEC–SAXS data

    SciTech Connect (OSTI)

    Pérez, Javier, E-mail: javier.perez@synchrotron-soleil.fr [Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, Saint-Aubin, 91192 Gif-sur-Yvette (France); Koutsioubas, Alexandros [Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstrasse 1, 85747 Garching (Germany); Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, Saint-Aubin, 91192 Gif-sur-Yvette (France)

    2015-01-01

    Systematic SAXS simulations have been analysed over a wide range of parameters in order to better understand the detergent corona around a membrane protein. The application of small-angle X-ray scattering (SAXS) to structural investigations of transmembrane proteins in detergent solution has been hampered by two main inherent hurdles. On the one hand, the formation of a detergent corona around the hydrophobic region of the protein strongly modifies the scattering curve of the protein. On the other hand, free micelles of detergent without a precisely known concentration coexist with the protein–detergent complex in solution, therefore adding an uncontrolled signal. To gain robust structural information on such systems from SAXS data, in previous work, advantage was taken of the online combination of size-exclusion chromatography (SEC) and SAXS, and the detergent corona around aquaporin-0, a membrane protein of known structure, could be modelled. A precise geometrical model of the corona, shaped as an elliptical torus, was determined. Here, in order to better understand the correlations between the corona model parameters and to discuss the uniqueness of the model, this work was revisited by analyzing systematic SAXS simulations over a wide range of parameters of the torus.

  19. 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 ...

  20. Synthetic and Mechanistic Chemistry

    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 AdministrationRobust,Field-effectWorking With LivermoreSustainable Land LabEnergyNationalScience BeatSynthetic

  1. 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

  2. Research Councils UK Synthetic biology

    E-Print Network [OSTI]

    Crowther, Paul

    Research Councils UK Synthetic biology #12;Synthetic biology Research funded by the Research a variety of approaches to support innovation and deliver impact from research, including the development of collaborative research programmes, investment in major research capabilities, such as national research

  3. Simple Host?Guest Chemistry To Modulate the Process of Concentration and Crystallization of Membrane Proteins by Detergent Capture in a Microfluidic Device

    SciTech Connect (OSTI)

    Li, Liang; Nachtergaele, Sigrid; Seddon, Annela M.; Tereshko, Valentina; Ponomarenko, Nina; Ismagilov, Rustem F. (UC)

    2009-01-15

    This paper utilizes cyclodextrin-based host-guest chemistry in a microfluidic device to modulate the crystallization of membrane proteins and the process of concentration of membrane protein samples. Methyl-{beta}-cyclodextrin (MBCD) can efficiently capture a wide variety of detergents commonly used for the stabilization of membrane proteins by sequestering detergent monomers. Reaction Center (RC) from Blastochloris viridis was used here as a model system. In the process of concentrating membrane protein samples, MBCD was shown to break up free detergent micelles and prevent them from being concentrated. The addition of an optimal amount of MBCD to the RC sample captured loosely bound detergent from the protein-detergent complex and improved sample homogeneity, as characterized by dynamic light scattering. Using plug-based microfluidics, RC crystals were grown in the presence of MBCD, giving a different morphology and space group than crystals grown without MBCD. The crystal structure of RC crystallized in the presence of MBCD was consistent with the changes in packing and crystal contacts hypothesized for removal of loosely bound detergent. The incorporation of MBCD into a plug-based microfluidic crystallization method allows efficient use of limited membrane protein sample by reducing the amount of protein required and combining sparse matrix screening and optimization in one experiment. The use of MBCD for detergent capture can be expanded to develop cyclodextrin-derived molecules for fine-tuned detergent capture and thus modulate membrane protein crystallization in an even more controllable way.

  4. Investigation of Detergent Effects on the Solution Structure of Spinach Light Harvesting Complex II

    SciTech Connect (OSTI)

    Cardoso, Mateus B [ORNL; Smolensky, Dmitriy [ORNL; Heller, William T [ORNL; O'Neill, Hugh Michael [ORNL

    2010-01-01

    The properties of spinach light harvesting complex II (LHC II), stabilized in the detergents Triton X-100 (TX100) and n-Octyl-{beta}-D-Glucoside (BOG), were investigated by small-angle neutron scattering (SANS). The LHC II-BOG scattering curve overlaid well with the theoretical scattering curve generated from the crystal structure of LHC II indicating that the protein preparation was in its native functional state. On the other hand, the simulated LHC II curve deviated significantly from the LHC II-TX100 experimental data. Analysis by circular dichroism spectroscopy supported the SANS analysis and showed that LHC II-TX100 is inactivated. This investigation has implications for extracting and stabilizing photosynthetic membrane proteins for the development of biohybrid photoconversion devices.

  5. Synthesizing Law for Synthetic Biology

    E-Print Network [OSTI]

    Torrance, Andrew W.

    2010-01-01

    , metabolic pathways, cells, viruses, and whole organisms rapidly, inexpensively, and easily. Already, a number of institutions have helped synthetic biology achieve considerable success, both in terms of science and public awareness. The BioBricks Foundation...

  6. Synthetic biology and crop engineering

    Broader source: Energy.gov [DOE]

    Breakout Session 2: Frontiers and Horizons Session 2-A: Synthetic Biology and the Promise of Biofuels Jonathan Burbaum, Program Director, Department of Energy, Office of Science, ARPA–E

  7. 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.

  8. SYNTHETIC SLING FAILURE - EVALUATIONS & RECOMMENDATIONS

    SciTech Connect (OSTI)

    MACKEY TC; HENDERSON CS

    2009-10-26

    The information and evaluations provided in this report were compiled to address the recurring problem of synthetic sling failure. As safety is the number one priority in all work aspects, a solution must be devised to prevent accidents from occurring. A total of thirteen cases regarding synthetic sling failure were evaluated in order to determine their causes, effects, and preventative measures. From the collected data, it was found that all cases in which the synthetic sling contacted the edge of its load resulted in sling failure. It is required that adequate synthetic sling protection devices be used to protect slings in any lift where the sling comes in direct contact with the edge or corner of its load. However, there are no consensus codes or standards stating the type, material, or purpose of the type of protective device used to protect the sling from being cut. Numerous industry standards and codes provide vague descriptions on how to protect synthetic slings. Without a clear, concise statement of how to protect synthetic slings, it is common for inadequate materials and sling protection devices to be used in an attempt to meet the intent of these requirements. The use of an inadequate sling protection device is the main cause of synthetic sling failure in all researched cases. Commercial sling protection devices come in many shapes and sizes, and have a variety of names, as well as advertised uses. 'Abrasion pads' and 'wear protectors' are two different names for products with the same intended purpose. There is no distinguishable way to determine the extent of sling protection which these devices will provide, or what specific scenarios they are made for. This creates room for error in a field where error is unacceptable. This report provides a recommended action for hoisting and rigging activities which require synthetic slings to contact a load, as well as recommended changes to industry standards which will benefit overall industry safety.

  9. 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, ...

  10. 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.

  11. 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 ...

  12. 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...

  13. 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).

  14. Holographic imaging of natural-fiber-containing materials

    DOE Patents [OSTI]

    Bunch, Kyle J [Richland, WA; Tucker, Brian J [Pasco, WA; Severtsen, Ronald H [Richland, WA; Hall, Thomas E [Kennewick, WA; McMakin, Douglas L [Richland, WA; Lechelt, Wayne M [West Richland, WA; Griffin, Jeffrey W [Kennewick, WA; Sheen, David M [Richland, WA

    2010-12-21

    The present invention includes methods and apparatuses for imaging material properties in natural-fiber-containing materials. In particular, the images can provide quantified measures of localized moisture content. Embodiments of the invention utilize an array of antennas and at least one transceiver to collect amplitude and phase data from radiation interacting with the natural-fiber-containing materials. The antennas and the transceivers are configured to transmit and receive electromagnetic radiation at one or more frequencies, which are between 50 MHz and 1 THz. A conveyance system passes the natural-fiber-containing materials through a field of view of the array of antennas. A computing device is configured to apply a synthetic imaging algorithm to construct a three-dimensional image of the natural-fiber-containing materials that provides a quantified measure of localized moisture content. The image and the quantified measure are both based on the amplitude data, the phase data, or both.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. Beyond the detergent effect: a binding site for sodium dodecyl sulfate (SDS) in mammalian apoferritin

    SciTech Connect (OSTI)

    Liu, Renyu Bu, Weiming; Xi, Jin; Mortazavi, Shirin R.; Cheung-Lau, Jasmina C.; Dmochowski, Ivan J.; Loll, Patrick J.

    2012-05-01

    Using X-ray crystallography and isothermal titration calorimetry, we show that sodium dodecyl sulfate (SDS) binds specifically to a pre-formed internal cavity in horse-spleen apoferritin. Although sodium dodecyl sulfate (SDS) is widely used as an anionic detergent, it can also exert specific pharmacological effects that are independent of the surfactant properties of the molecule. However, structural details of how proteins recognize SDS are scarce. Here, it is demonstrated that SDS binds specifically to a naturally occurring four-helix bundle protein: horse apoferritin. The X-ray crystal structure of the apoferritin–SDS complex was determined at a resolution of 1.9 Ĺ and revealed that the SDS binds in an internal cavity that has previously been shown to recognize various general anesthetics. A dissociation constant of 24 ± 9 µM at 293 K was determined by isothermal titration calorimetry. SDS binds in this cavity by bending its alkyl tail into a horseshoe shape; the charged SDS head group lies in the opening of the cavity at the protein surface. This crystal structure provides insights into the protein–SDS interactions that give rise to binding and may prove useful in the design of novel SDS-like ligands for some proteins.

  1. Future Prospects of Synthetic Fuels 

    E-Print Network [OSTI]

    Fryback, M. G.

    1982-01-01

    It is important for the future of this nation to reach the goal of demonstrated definition and quantification of the parameters which influence the ability to use this country's vast resources of coal and oil shale for production of synthetic fuels...

  2. Synthetic substrates for enzyme analysis

    DOE Patents [OSTI]

    Bissell, Eugene R. (Alamo, CA); Mitchell, Alexander R. (Livermore, CA); Pearson, Karen W. (Livermore, CA); Smith, Robert E. (Livermore, CA)

    1983-01-01

    Synthetic substrates are provided which may be represented as A-D. The A moiety thereof includes an amino acid, polypeptide, or derivative thereof. The D moiety thereof includes 7-amino coumarin derivatives having an electron withdrawing substituent group at the 3 position carbon or fused between the 3 and 4 position carbons.

  3. Synthetic substrates for enzyme analysis

    DOE Patents [OSTI]

    Bissell, E.R.; Mitchell, A.R.; Pearson, K.W.; Smith, R.E.

    1983-06-14

    Synthetic substrates are provided which may be represented as A-D. The A moiety includes an amino acid, polypeptide, or derivative. The D moiety includes 7-amino coumarin derivatives having an electron withdrawing substituent group at the 3 position carbon or fused between the 3 and 4 position carbons. No Drawings

  4. 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

  5. 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.

  6. Objective methods for evaluating synthetic intonation. 

    E-Print Network [OSTI]

    Clark, Robert A J; Dusterhoff, Kurt E

    1999-01-01

    This paper describes the development and evaluation of objective methods for testing synthetic intonation. While subjective methods are available for assessing the quality of synthetic intonation, such tests consume ...

  7. Synthetic LDL as targeted drug delivery vehicle

    DOE Patents [OSTI]

    Forte, Trudy M. (Berkeley, CA); Nikanjam, Mina (Richmond, CA)

    2012-08-28

    The present invention provides a synthetic LDL nanoparticle comprising a lipid moiety and a synthetic chimeric peptide so as to be capable of binding the LDL receptor. The synthetic LDL nanoparticle of the present invention is capable of incorporating and targeting therapeutics to cells expressing the LDL receptor for diseases associated with the expression of the LDL receptor such as central nervous system diseases. The invention further provides methods of using such synthetic LDL nanoparticles.

  8. Synthetic thermoelectric materials comprising phononic crystals

    DOE Patents [OSTI]

    El-Kady, Ihab F; Olsson, Roy H; Hopkins, Patrick; Reinke, Charles; Kim, Bongsang

    2013-08-13

    Synthetic thermoelectric materials comprising phononic crystals can simultaneously have a large Seebeck coefficient, high electrical conductivity, and low thermal conductivity. Such synthetic thermoelectric materials can enable improved thermoelectric devices, such as thermoelectric generators and coolers, with improved performance. Such synthetic thermoelectric materials and devices can be fabricated using techniques that are compatible with standard microelectronics.

  9. 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...

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. Synthetic carbonaceous fuels and feedstocks

    DOE Patents [OSTI]

    Steinberg, Meyer (Huntington Station, NY)

    1980-01-01

    This invention relates to the use of a three compartment electrolytic cell in the production of synthetic carbonaceous fuels and chemical feedstocks such as gasoline, methane and methanol by electrolyzing an aqueous sodium carbonate/bicarbonate solution, obtained from scrubbing atmospheric carbon dioxide with an aqueous sodium hydroxide solution, whereby the hydrogen generated at the cathode and the carbon dioxide liberated in the center compartment are combined thermocatalytically into methanol and gasoline blends. The oxygen generated at the anode is preferably vented into the atmosphere, and the regenerated sodium hydroxide produced at the cathode is reused for scrubbing the CO.sub.2 from the atmosphere.

  15. 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.

  16. 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.

  17. 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.

  18. 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

  19. 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 ...

  20. 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 ...

  1. 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).

  2. Entraining synthetic genetic oscillators Alexandre Wagemakers,1

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Entraining synthetic genetic oscillators Alexandre Wagemakers,1 Javier M. Buldú,2 Miguel A. F genetic oscillators, which consists in the entrainment of a colony of repressilators by external

  3. 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.

  4. 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...

  5. 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...

  6. 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...

  7. 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.

  8. 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.

  9. 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%.

  10. 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.

  11. 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

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. Computational Modelling in Systems and Synthetic Biology

    E-Print Network [OSTI]

    Romero-Campero, Francisco J.

    modules Networks Cells Colonies Systems Biology and Synthetic Biology #12;Stochasticity is important processes. Executable semantics. o Modularity in cellular systems, especially in gene regulatory networks been successfully applied. Monika Heiner, David Gilbert, Robin Donaldson. Petri Nets for Systems

  17. Synthetic analogs of bacterial quorum sensors

    DOE Patents [OSTI]

    Iyer, Rashi S.; Ganguly, Kumkum; Silks, Louis A.

    2013-01-08

    Bacterial quorum-sensing molecule analogs having the following structures: ##STR00001## and methods of reducing bacterial pathogenicity, comprising providing a biological system comprising pathogenic bacteria which produce natural quorum-sensing molecule; providing a synthetic bacterial quorum-sensing molecule having the above structures and introducing the synthetic quorum-sensing molecule into the biological system comprising pathogenic bacteria. Further is provided a method of targeted delivery of an antibiotic, comprising providing a synthetic quorum-sensing molecule; chemically linking the synthetic quorum-sensing molecule to an antibiotic to produce a quorum-sensing molecule-antibiotic conjugate; and introducing the conjugate into a biological system comprising pathogenic bacteria susceptible to the antibiotic.

  18. Synthetic analogs of bacterial quorum sensors

    DOE Patents [OSTI]

    Iyer, Rashi (Los Alamos, NM); Ganguly, Kumkum (Los Alamos, NM); Silks, Louis A. (Los Alamos, NM)

    2011-12-06

    Bacterial quorum-sensing molecule analogs having the following structures: ##STR00001## and methods of reducing bacterial pathogenicity, comprising providing a biological system comprising pathogenic bacteria which produce natural quorum-sensing molecule; providing a synthetic bacterial quorum-sensing molecule having the above structures and introducing the synthetic quorum-sensing molecule into the biological system comprising pathogenic bacteria. Further is provided a method of targeted delivery of an antibiotic, comprising providing a synthetic quorum-sensing molecule; chemically linking the synthetic quorum-sensing molecule to an antibiotic to produce a quorum-sensing molecule-antibiotic conjugate; and introducing the conjugate into a biological system comprising pathogenic bacteria susceptible to the antibiotic.

  19. Authentic teaching and learning through synthetic biology

    E-Print Network [OSTI]

    Kuldell, Natalie

    Synthetic biology is an emerging engineering discipline that, if successful, will allow well-characterized biological components to be predictably and reliably built into robust organisms that achieve specific functions. ...

  20. Foundational platform for mammalian synthetic biology

    E-Print Network [OSTI]

    Davidsohn, Noah (Noah Justin)

    2013-01-01

    The emergent field of synthetic biology is different from many other biological engineering efforts, in that its roots, design principles, and forward engineering perspective have been adopted from electrical engineering ...

  1. Synthetic CO.sub.2 acceptor

    DOE Patents [OSTI]

    Lancet, Michael S. (Pittsburgh, PA); Curran, George P. (Pittsburgh, PA)

    1981-08-18

    A synthetic CO.sub.2 acceptor consisting essentially of at least one compound selected from the group consisting of calcium oxide and calcium carbonate supported in a refractory carrier matrix, the carrier having the general formula Ca.sub.5 (SiO.sub.4).sub.2 CO.sub.3. A method for producing the synthetic CO.sub.2 acceptor is also disclosed.

  2. Synthetic heparin-binding growth factor analogs

    DOE Patents [OSTI]

    Pena, Louis A.; Zamora, Paul; Lin, Xinhua; Glass, John D.

    2007-01-23

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain that binds a heparin-binding growth factor receptor, covalently bound to a hydrophobic linker, which is in turn covalently bound to a non-signaling peptide that includes a heparin-binding domain. The synthetic heparin-binding growth factor analogs are useful as soluble biologics or as surface coatings for medical devices.

  3. Flow control via synthetic jet actuation 

    E-Print Network [OSTI]

    Miller, Adam Cole

    2005-02-17

    -1 FLOW CONTROL VIA SYNTHETIC JET ACTUATION A Thesis by ADAM COLE MILLER 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... 2004 Major Subject: Aerospace Engineering FLOW CONTROL VIA SYNTHETIC JET ACTUATION A Thesis by ADAM COLE MILLER Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE...

  4. 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.

  5. 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.

  6. 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.

  7. 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

  8. Surfactant/detergent titration analysis method and apparatus for machine working fluids, surfactant-containing wastewater and the like

    DOE Patents [OSTI]

    Smith, Douglas D. (Knoxville, TN); Hiller, John M. (Oak Ridge, TN)

    1998-01-01

    The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration.

  9. Surfactant/detergent titration analysis method and apparatus for machine working fluids, surfactant-containing wastewater and the like

    DOE Patents [OSTI]

    Smith, D.D.; Hiller, J.M.

    1998-02-24

    The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration. 1 fig.

  10. 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.

  11. 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.

  12. 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...

  13. 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.

  14. 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

  15. New Synthetic Methods for Hypericum Natural Products

    SciTech Connect (OSTI)

    Insik Jeon

    2006-12-12

    Organic chemistry has served as a solid foundation for interdisciplinary research areas, such as molecular biology and medicinal chemistry. An understanding of the biological activities and structural elucidations of natural products can lead to the development of clinically valuable therapeutic options. The advancements of modern synthetic methodologies allow for more elaborate and concise natural product syntheses. The theme of this study centers on the synthesis of natural products with particularly challenging structures and interesting biological activities. The synthetic expertise developed here will be applicable to analog syntheses and to other research problems.

  16. Synthetic heparin-binding factor analogs

    DOE Patents [OSTI]

    Pena, Louis A. (Poquott, NY); Zamora, Paul O. (Gaithersburg, MD); Lin, Xinhua (Plainview, NY); Glass, John D. (Shoreham, NY)

    2010-04-20

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain, and preferably two peptide chains branched from a dipeptide branch moiety composed of two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a linker, which may be a hydrophobic linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

  17. 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...

  18. 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...

  19. 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...

  20. 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...

  1. 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.

  2. BIODEGRADATION OF COMPOSITE NONWOVENS MADE OF NATURAL FIBERS AND SYNTHETIC POLYMERS

    E-Print Network [OSTI]

    Kg/year and 50- 10 kg per capita per year in industrialized countries [1]. World consumption. In the same period, per capita consumption is projected to climb by 85 percent in Southeast Asia alone in research, such as the development of cost-effective methods for producing/extracting plastics from

  3. Holographic imaging based on time-domain data of natural-fiber-containing materials

    DOE Patents [OSTI]

    Bunch, Kyle J.; McMakin, Douglas L.

    2012-09-04

    Methods and apparatuses for imaging material properties in natural-fiber-containing materials can utilize time-domain data. In particular, images can be constructed that provide quantified measures of localized moisture content. For example, one or more antennas and at least one transceiver can be configured to collect time-domain data from radiation interacting with the natural-fiber-containing materials. The antennas and the transceivers are configured to transmit and receive electromagnetic radiation at one or more frequencies, which are between 50 MHz and 1 THz, according to a time-domain impulse function. A computing device is configured to transform the time-domain data to frequency-domain data, to apply a synthetic imaging algorithm for constructing a three-dimensional image of the natural-fiber-containing materials, and to provide a quantified measure of localized moisture content based on a pre-determined correlation of moisture content to frequency-domain data.

  4. Immobilization of radioiodine in synthetic boracite

    DOE Patents [OSTI]

    Babad, H.; Strachan, D.M.

    1982-09-23

    A nuclear waste storage product is disclosed in which radioiodine is incorporated in a synthetic boracite. The boracite may be prepared by reacting a transition metal iodide with an alkali horate under mild hydrothermal conditions, drying the reaction product, and then hot pressing.

  5. A modelling framework for Synthetic Biology

    E-Print Network [OSTI]

    in large gene compositions. Keywords: Synthetic biology; Gene regulated networks; Stochastic simulation; Petri net modelling; Genetic design automation; Genetic logic synthesis #12;ii #12;Summary (Danish gensammensætninger. Nøgleord: Syntesebiologi; Genregulerede netværk; Stokastisk simulering; Petri net mo- dellering

  6. Coal based synthetic fuel technology assessment guides

    SciTech Connect (OSTI)

    Not Available

    1981-09-01

    Seventeen synthetic fuel processes are described in detail and compared on a uniform basis. This work was supported by the Energy Information Administration for the purpose of technology assessment of the processes, their efficiency, the capitalized and operating cost of plants of similar size, possible constraints, possible siting problems, regional effects, pollution control, etc. (LTN)

  7. Cellular CSK resembles natural and synthetic materials

    E-Print Network [OSTI]

    Sniadecki, Nathan J.

    Theory Pinned-pinned, three-point bending Es is modulus of elasticity for beam (F-actin GPa) d 3 48 s F l E ISession 15 #12;2 Cellular CSK resembles natural and synthetic materials Felt Paper Cotton NASA r r #12;6 (a/k/a Second Moment of Area) Geometric resistance of a beam to bending 2 2

  8. Synthetic Biology for Therapeutic Applications Zhanar Abil,

    E-Print Network [OSTI]

    Zhao, Huimin

    Synthetic Biology for Therapeutic Applications Zhanar Abil, Xiong Xiong, and Huimin Zhao of Bioengineering, Department of Chemistry, Center for Biophysics and Computational Biology and Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois

  9. CO2 Capture with Enzyme Synthetic Analogue

    SciTech Connect (OSTI)

    Harry Cordatos

    2010-11-08

    Overview of an ongoing, 2 year research project partially funded by APRA-E to create a novel, synthetic analogue of carbonic anhydrase and incorporate it into a membrane for removal of CO2 from flue gas in coal power plants. Mechanism background, preliminary feasibility study results, molecular modeling of analogue-CO2 interaction, and program timeline are provided.

  10. Feedback control of flow separation using synthetic jets 

    E-Print Network [OSTI]

    Kim, Kihwan

    2006-04-12

    The primary goal of this research is to assess the effect of synthetic jets on flow separation and provide a feedback control strategy for flow separation using synthetic jets. The feedback control synthesis is conducted based upon CFD simulation...

  11. Active flow separation control using synthetic jet actuators 

    E-Print Network [OSTI]

    Rao, Preetham P

    2000-01-01

    The use of synthetic jet actuators for controlling the boundary layer flow and flow separation over a wing is investigated. A theory for the optimum design of actuators using motors is developed. A motor driven synthetic jet actuator is built...

  12. Aspects of the political economy of development and synthetic biology

    E-Print Network [OSTI]

    Wellhausen, Rachel

    What implications might synthetic biology’s potential as a wholly new method of production have for the world economy, particularly developing countries? Theories of political economy predict that synthetic biology can ...

  13. 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.

  14. Axisymmetric Synthetic Jets: An Experimental and Theoretical Examination

    E-Print Network [OSTI]

    Mohseni, Kamran

    Axisymmetric Synthetic Jets: An Experimental and Theoretical Examination Gopi Krishnan and Kamran synthetic jet driven by a piezoelectric membrane issuing into a quiescent environment is studied in this paper. The self-similar behavior exhibited by both synthetic and continuous turbulent jets leads

  15. 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.

  16. PRODUCTION OF FOAMS, FIBERS AND PITCHES USING A COAL EXTRACTION PROCESS

    SciTech Connect (OSTI)

    Chong Chen; Elliot B. Kennel; Liviu Magean; Pete G. Stansberry; Alfred H. Stiller; John W. Zondlo

    2004-06-20

    This Department of Energy National Energy Technology Laboratory sponsored project developed processes for converting coal feedstocks to carbon products, including coal-derived pitch, coke foams and fibers based on solvent extraction processes. A key technology is the use of hydrogenation accomplished at elevated temperatures and pressures to obtain a synthetic coal pitch. Hydrogenation, or partial direct liquefaction of coal, is used to modify the properties of raw coal such that a molten synthetic pitch can be obtained. The amount of hydrogen required to produce a synthetic pitch is about an order of magnitude less than the amount required to produce synthetic crude oil. Hence the conditions for synthetic pitch production consume very little hydrogen and can be accomplished at substantially lower pressure. In the molten state, hot filtration or centrifugation can be used to separate dissolved coal chemicals from mineral matter and insolubles (inertinite), resulting in the production of a purified hydrocarbon pitch. Alternatively, if hydrogenation is not used, aromatic hydrocarbon liquids appropriate for use as precursors to carbon products can obtained by dissolving coal in a solvent. As in the case for partial direct liquefaction pitches, undissolved coal is removed via hot filtration or centrifugation. Excess solvent is boiled off and recovered. The resultant solid material, referred to as Solvent Extracted Carbon Ore or SECO, has been used successfully to produce artificial graphite and carbon foam.

  17. 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...

  18. 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.

  19. 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 ...

  20. 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.

  1. 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...

  2. Cellular CSK resembles natural and synthetic materials

    E-Print Network [OSTI]

    Sniadecki, Nathan J.

    -pinned, three-point bending 7 Es is modulus of elasticity for beam (F-actin GPa) 3 48 s F l E I = #12;StressSession 15 #12;Cellular CSK resembles natural and synthetic materials Felt Paper Cotton 2 Cotton = #12;(a/k/a Second Moment of Area) Geometric resistance of a beam to bending 2 x A I y dA= y 6 2 4 4 4

  3. 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.

  4. 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.

  5. 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.

  6. 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,

  7. 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...

  8. Analysis of Energy Use in Building Services of the Industrial Sector in California: A Literature Review and a Preliminary Characterization

    E-Print Network [OSTI]

    Akbari, H.

    2008-01-01

    Organic Industrial Agricultural Plastics and Synthetics Drugs Soaps, detergents, toilet paper Paints,

  9. 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.

  10. 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.

  11. Micro/nanofabricated environments for synthetic biology

    SciTech Connect (OSTI)

    Collier, Pat [ORNL; Simpson, Michael L [ORNL

    2011-01-01

    A better understanding of how confinement, crowding and reduced dimensionality modulate reactivity and reaction dynamics will aid in the rational and systematic discovery of functionality in complex biological systems. Artificial micro- and nanofabricated structures have helped elucidate the effects of nanoscale spatial confinement and segregation on biological behavior, particularly when integrated with microfluidics, through precise control in both space and time of diffusible signals and binding interactions. Examples of nanostructured interfaces for synthetic biology include the development of cell-like compartments for encapsulating biochemical reactions, nanostructured environments for fundamental studies of diffusion, molecular transport and biochemical reaction kinetics, and regulation of biomolecular interactions as functions of micro- and nanofabricated topological constraints.

  12. 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...

  13. 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.

  14. Chemistry in Motion: Tiny Synthetic Motors

    E-Print Network [OSTI]

    Peter H. Colberg; Shang Yik Reigh; Bryan Robertson; Raymond Kapral

    2014-11-03

    In this Account, we describe how synthetic motors that operate by self-diffusiophoresis make use of a self-generated concentration gradient to drive motor motion. A description of propulsion by self-diffusiophoresis is presented for Janus particle motors comprising catalytic and noncatalytic faces. The properties of the dynamics of chemically powered motors are illustrated by presenting the results of particle-based simulations of sphere-dimer motors constructed from linked catalytic and noncatalytic spheres. The geometries of both Janus and sphere-dimer motors with asymmetric catalytic activity support the formation of concentration gradients around the motors. Because directed motion can occur only when the system is not in equilibrium, the nature of the environment and the role it plays in motor dynamics are described. Rotational Brownian motion also acts to limit directed motion, and it has especially strong effects for very small motors. We address the following question: how small can motors be and still exhibit effects due to propulsion, even if only to enhance diffusion? Synthetic motors have the potential to transform the manner in which chemical dynamical processes are carried out for a wide range of applications.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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

  20. A model for improving microbial biofuel production using a synthetic...

    Office of Scientific and Technical Information (OSTI)

    loop Cells use feedback to implement a diverse range of regulatory functions. Building synthetic feedback control systems may yield insight into the roles that feedback can...

  1. Synthetic nanotubes lay foundation for new technology: Artificial...

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

    Synthetic nanotubes lay foundation for new technology: Artificial pores mimic key features of natural pores By Tona Kunz * July 17, 2012 Tweet EmailPrint Scientists have overcome...

  2. Molecular Recognition by Synthetic Receptors in Biomimetic and Cellular Systems

    E-Print Network [OSTI]

    Ghang, Yoo-Jin

    2015-01-01

    Synthetic Glycopolymers into Cellular Membranes. ” J. Am.between siRNA Localization, Cellular Uptake, and RNAi inas an Anti-Tumor Drig: Cellular Mechanisms of Activity, Drug

  3. Copy of Synthetic Biology of Novel Thermophilic Bacteria for...

    Office of Scientific and Technical Information (OSTI)

    Copy of Synthetic Biology of Novel Thermophilic Bacteria for Enhanced Production of Ethanol from 5-Carbon Sugars (LDRD %23 105944). Citation Details In-Document Search Title: Copy...

  4. Development of a removable conformal coating through the synthetic...

    Office of Scientific and Technical Information (OSTI)

    Conference: Development of a removable conformal coating through the synthetic incorporation of Diels-Adler thermally reversible adducts into an epoxy resin. Citation Details...

  5. Inversion of synthetic aperture radar interferograms for sources...

    Open Energy Info (EERE)

    Inversion of synthetic aperture radar interferograms for sources of production-related subsidence at the Dixie Valley geothermal field Jump to: navigation, search OpenEI Reference...

  6. 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

  7. 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

  8. 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

  9. 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

  10. Palmitoylation of SARS-CoV S protein is necessary for partitioning into detergent-resistant membranes and cell-cell fusion but not interaction with M protein

    SciTech Connect (OSTI)

    McBride, Corrin E.; Machamer, Carolyn E.

    2010-09-15

    Coronaviruses are enveloped RNA viruses that generally cause mild disease in humans. However, the recently emerged coronavirus that caused severe acute respiratory syndrome (SARS-CoV) is the most pathogenic human coronavirus discovered to date. The SARS-CoV spike (S) protein mediates virus entry by binding cellular receptors and inducing fusion between the viral envelope and the host cell membrane. Coronavirus S proteins are palmitoylated, which may affect function. Here, we created a non-palmitoylated SARS-CoV S protein by mutating all nine cytoplasmic cysteine residues. Palmitoylation of SARS-CoV S was required for partitioning into detergent-resistant membranes and for cell-cell fusion. Surprisingly, however, palmitoylation of S was not required for interaction with SARS-CoV M protein. This contrasts with the requirement for palmitoylation of mouse hepatitis virus S protein for interaction with M protein and may point to important differences in assembly and infectivity of these two coronaviruses.

  11. 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.

  12. 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.

  13. Synthetic magnetoelectric coupling in a nanocomposite multiferroic

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

    Jain, P.; Wang, Q.; Roldan, M.; Glavic, A.; Lauter, V.; Urban, C.; Bi, Z.; Ahmed, T.; Zhu, J.; Varela, M.; et al

    2015-03-13

    Given the paucity of single phase multiferroic materials (with large ferromagnetic moment), composite systems seem an attractive solution to realize magnetoelectric coupling between ferromagnetic and ferroelectric order parameters. Despite having antiferromagnetic order, BiFeO? (BFO) has nevertheless been a key material due to excellent ferroelectric properties at room temperature. We studied a superlattice composed of 8 repetitions of 6 unit cells of La?.?Sr?.?MnO? (LSMO) grown on 5 unit cells of BFO. Significant net uncompensated magnetization in BFO, an insulating superlattice, is demonstrated using polarized neutron reflectometry. Remarkably, the magnetization enables magnetic field to change the dielectric properties of the superlattice, whichmore »we cite as an example of synthetic magnetoelectric coupling. Importantly, controlled creation of magnetic moment in BFO is a much needed path toward design and implementation of integrated oxide devices for next generation magnetoelectric data storage platforms.« less

  14. Environmental data energy technology characterizations: synthetic fuels

    SciTech Connect (OSTI)

    Not Available

    1980-04-01

    Environmental Data Energy Technology Characterizations are publications which are intended to provide policy analysts and technical analysts with basic environmental data associated with key energy technologies. This publication provides documentation on synthetic fuels (coal-derived and oil shale). The transformation of the energy in coal and oil shale into a more useful form is described in this publication in terms of major activity areas in the synthetic fuel cycles, that is, in terms of activities which produce either an energy product or a fuel leading to the production of an energy product in a different form. The activities discussed in this document are coal liquefaction, coal gasification, in-situ gasification, and oil shales. These activities represent both well-documented and advanced activity areas. The former activities are characterized in terms of actual operating data with allowance for future modification where appropriate. Emissions are assumed to conform to environmental standards. The advanced activity areas examined are those like coal liquefaction and in-situ retorting of oil shale. For these areas, data from pilot or demonstration plants were used where available; otherwise, engineering studies provided the data. The organization of the chapters in this volume is designed to support the tabular presentation in the summary volume. Each chapter begins with a brief description of the activity under consideration. The standard characteristics, size, availability, mode of functioning and place in the fuel cycle are presented. Next, major legislative and/or technological factors influencing the commercial operation of the activity are offered. Discussions of resources consumed, residuals produced, and economics follow. To aid in comparing and linking the different activity areas, data for each area are normalized to 10/sup 12/ Btu of energy output from the activity.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. Controlled polymer synthesis--from biomimicry towards synthetic biology

    E-Print Network [OSTI]

    Davis, Ben G.

    Controlled polymer synthesis--from biomimicry towards synthetic biology George Pasparakis assembly of synthetic polymer structures is now possible with an unprecedented range of functional groups). Introduction Life depends on polymers, and the adage `the whole is greater than the sum of the parts

  20. FOREST ENTOMOLOGY Blending Synthetic Pheromones of Cerambycid Beetles to Develop

    E-Print Network [OSTI]

    Hanks, Lawrence M.

    (F.),Neoclytusmucronatus(F.),andXylotrechuscolonus(F.).Beetlesofthesespecieswere signiŢcantly attracted to synthetic blends that contained their pheromone components (isomers of 3FOREST ENTOMOLOGY Blending Synthetic Pheromones of Cerambycid Beetles to Develop Trap Lures.1603/EC11434 ABSTRACT We evaluated attraction of cerambycid beetle species to blends of known cerambycid

  1. 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.

  2. Target Discrimination in Synthetic Aperture Radar (SAR) using Artificial Neural Networks 1 TargetDiscriminationinSyntheticApertureRadar(SAR)

    E-Print Network [OSTI]

    Slatton, Clint

    Target Discrimination in Synthetic Aperture Radar (SAR) using Artificial Neural Networks 1 Target principe@cnel.ufl.edu Abstract: This paper addresses target discrimination in synthetic aperture radar (SAR classification but here the goal is discrimination. We will show that the two applications require different cost

  3. 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...

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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

  9. Motion Measurement for Synthetic Aperture Radar.

    SciTech Connect (OSTI)

    Doerry, Armin W.

    2015-01-01

    Synthetic Aperture Radar (SAR) measures radar soundings from a set of locations typically along the flight path of a radar platform vehicle. Optimal focusing requires precise knowledge of the sounding source locations in 3 - D space with respect to the target scene. Even data driven focusing techniques (i.e. autofocus) requires some degree of initial fidelity in the measurements of the motion of the radar. These requirements may be quite stringent especially for fine resolution, long ranges, and low velocities. The principal instrument for measuring motion is typically an Inertial Measurement Unit (IMU), but these instruments have inherent limi ted precision and accuracy. The question is %22How good does an IMU need to be for a SAR across its performance space?%22 This report analytically relates IMU specifications to parametric requirements for SAR. - 4 - Acknowledgements Th e preparation of this report is the result of a n unfunded research and development activity . Although this report is an independent effort, it draws heavily from limited - release documentation generated under a CRADA with General Atomics - Aeronautical System, Inc. (GA - ASI), and under the Joint DoD/DOE Munitions Program Memorandum of Understanding. Sandia National Laboratories is a multi - program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of En ergy's National Nuclear Security Administration under contract DE - AC04 - 94AL85000.

  10. Naphthene upgrading with pillared synthetic clay catalysts

    SciTech Connect (OSTI)

    Sharma, R.K.; Olson, E.S. [Univ. of North Dakota, Grand Forks, ND (United States)

    1995-12-31

    Catalytic hydrotreatment of methylcyclohexane was investigated to model upgrading of coal-derived naphthenes. Nickel-substituted synthetic mica montmorillonite (NiSMM), alumina-pillared NiSMM and Zirconia-pillared NiSMM were prepared and tested for hydrocracking and hydroisomerization of methylcyclohexane. Infrared and thermal desorption studies of the pyridine-adsorbed catalysts indicated the presence of Lewis and Bronsted acid sites. Total acidity and surface area increased with pillaring of NiSMM with polyoxy aluminum and polyoxy zirconium cations. Methylcyclohexane was reacted with these catalysts under a variety of conditions. Pillared clays gave higher gas yields and higher hydrocracking but lower hydroisomerization activity than nonpillared clay. The majority of the products were branched alkanes (isoparaffinic). These catalysts effectively use hydrogen as indicated by the minimal formation of aromatic hydrocarbons, coke, or other oligomeric materials. The effect of various operating conditions, i.e., reaction temperature, contact time, H{sub 2} pressure, and catalyst, on the product distribution will be described.

  11. 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...

  12. 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...

  13. 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...

  14. 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

  15. 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...

  16. 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

  17. 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

  18. 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

  19. Computational optimization of synthetic water channels.

    SciTech Connect (OSTI)

    Rogers, David Michael; Rempe, Susan L. B.

    2012-12-01

    Membranes for liquid and gas separations and ion transport are critical to water purification, osmotic energy generation, fuel cells, batteries, supercapacitors, and catalysis. Often these membranes lack pore uniformity and robustness under operating conditions, which can lead to a decrease in performance. The lack of uniformity means that many pores are non-functional. Traditional membranes overcome these limitations by using thick membrane materials that impede transport and selectivity, which results in decreased performance and increased operating costs. For example, limitations in membrane performance demand high applied pressures to deionize water using reverse osmosis. In contrast, cellular membranes combine high flux and selective transport using membrane-bound protein channels operating at small pressure differences. Pore size and chemistry in the cellular channels is defined uniformly and with sub-nanometer precision through protein folding. The thickness of these cellular membranes is limited to that of the cellular membrane bilayer, about 4 nm thick, which enhances transport. Pores in the cellular membranes are robust under operating conditions in the body. Recent efforts to mimic cellular water channels for efficient water deionization produced a significant advance in membrane function. The novel biomimetic design achieved a 10-fold increase in membrane permeability to water flow compared to commercial membranes and still maintained high salt rejection. Despite this success, there is a lack of understanding about why this membrane performs so well. To address this lack of knowledge, we used highperformance computing to interrogate the structural and chemical environments experienced by water and electrolytes in the newly created biomimetic membranes. We also compared the solvation environments between the biomimetic membrane and cellular water channels. These results will help inform future efforts to optimize and tune the performance of synthetic biomimetic membranes for applications in water purification, energy, and catalysis.

  20. Synthetic strategies for the design of platinum anticancer drug candidates

    E-Print Network [OSTI]

    Wilson, Justin Jeff

    2013-01-01

    Chapter 1. The Synthetic Chemistry of Platinum Anticancer Agents Since the inception of cisplatin as a clinically approved anticancer agent, a large number of platinum compounds have been synthesized with the aim of finding ...

  1. A Transport Synthetic Acceleration method for transport iterations 

    E-Print Network [OSTI]

    Ramone, Gilles Lionel

    1996-01-01

    We present a family of Transport Synthetic Acceleration (TSA) methods to iteratively solve within-group scattering problems. A single iteration in these schemes consists of a transport sweep followed by a low-order calculation ...

  2. Microwave-induced thermoacoustic tomography: reconstruction by synthetic aperture 

    E-Print Network [OSTI]

    Feng, Dazi

    2001-01-01

    We have applied the synthetic-aperture method to linear-scanning microwave-induced thermoacoustic tomography in biological tissues. A non-focused ultrasonic transducer was used to receive thermoacoustic signals, to which the delay-and-sum algorithm...

  3. Synthetic scaffolds and protein assemblies for engineering applications

    E-Print Network [OSTI]

    Norville, Julie Erin, 1980-

    2004-01-01

    S-layer proteins, which naturally self-assemble on the exterior of cells, provide an interesting basis for the creation of synthetic scaffolds. In this thesis, I created a plasmid which produces a recombinant form of a ...

  4. Amino : a domestic system for synthetic biology and continuous culturing

    E-Print Network [OSTI]

    Legault, Julie, S.M. Massachusetts Institute of Technology

    2015-01-01

    With the ability to transfer a trait from one creature to another purposefully, synthetic biology is advancing across unforeseen domains. From algae cells that convert carbon dioxide to fuel, biocementation bacteria to ...

  5. What rough beast? Synthetic Biology and the Future of Biosecurity

    E-Print Network [OSTI]

    Mohr, Scott C.

    Synthetic biology seeks to create modular biological parts that can be assembled into useful devices, allowing the modification of biological systems with greater reliability, at lower cost, with greater speed, and by a ...

  6. Development of a synthetic phase contrast imaging diagnostic

    E-Print Network [OSTI]

    Rost, Jon C.

    A “synthetic diagnostic” has been developed to calculate the expected experimental response of phase contrast imaging (PCI), a scattering diagnostic used to measure density fluctuations in laboratory plasmas, to a tokamak ...

  7. Expansion of Automotive Industries to Boost the Global Synthetic...

    Open Energy Info (EERE)

    on the key players in the global synthetic and bio-based lubricants market such as BP plc, Chevron, and Exxon Mobil Corporation, including financial overview, data gained from...

  8. Defossiling Fuel: How Synthetic Biology Can Transform Biofuel Production

    E-Print Network [OSTI]

    Defossiling Fuel: How Synthetic Biology Can Transform Biofuel Production David F. Savage , Jeffrey through natural intermediates to final molecule is long, and biofuel production is perhaps the ultimate engineering, economic, political, and environmental realities. Are biofuels sustainable? Consider U

  9. Recent and future trends in synthetic greenhouse gas radiative forcing

    E-Print Network [OSTI]

    O'Doherty, S.

    Atmospheric measurements show that emissions of hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons are now the primary drivers of the positive growth in synthetic greenhouse gas (SGHG) radiative forcing. We infer recent ...

  10. 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...

  11. Synthetic reverberating activity patterns embedded in networks of cortical neurons

    E-Print Network [OSTI]

    Roni Vardi; Avner Wallach; Evi Kopelowitz; Moshe Abeles; Shimon Marom; Ido Kanter

    2012-03-26

    Synthetic reverberating activity patterns are experimentally generated by stimulation of a subset of neurons embedded in a spontaneously active network of cortical cells in-vitro. The neurons are artificially connected by means of conditional stimulation matrix, forming a synthetic local circuit with a predefined programmable connectivity and time-delays. Possible uses of this experimental design are demonstrated, analyzing the sensitivity of these deterministic activity patterns to transmission delays and to the nature of ongoing network dynamics.

  12. 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.

  13. 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...

  14. 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

  15. 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.

  16. 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...

  17. 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...

  18. 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...

  19. 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...

  20. 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...

  1. 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...

  2. 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.

  3. 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

  4. 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

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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

  11. 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.

  12. 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.

  13. 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).

  14. 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.

  15. 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.

  16. 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.

  17. Approaches to mitigate the impact of dissolved organic matter on the adsorption of synthetic organic contaminants by porous carbonaceous sorbents

    SciTech Connect (OSTI)

    Yanping Guo; Abhishek Yadav; Tanju Karanfil [Clemson University, Anderson, SC (United States). Department of Environmental Engineering and Earth Sciences

    2007-11-15

    Adsorption of trichloroethylene (TCE) and atrazine, two synthetic organic contaminants (SOCs) having different optimum adsorption pore regions, by four activated carbons and an activated carbon fiber (ACF) was examined. Adsorbents included two coconut-shell based granular activated carbons (GACs), two coal-based GACs (F400 and HD4000) and a phenol formaldehyde-based activated carbon fiber. The selected adsorbents had a wide range of pore size distributions but similar surface acidity and hydrophobicity. Single solute and preloading (with a dissolved organic matter (DOM)) isotherms were performed. Single solute adsorption results showed that (i) the adsorbents having higher amounts of pores with sizes about the dimensions of the adsorbate molecules exhibited higher uptakes, (ii) there were some pore structure characteristics, which were not completely captured by pore size distribution analysis, that also affected the adsorption, and (iii) the BET surface area and total pore volume were not the primary factors controlling the adsorption of SOCs. The preloading isotherm results showed that for TCE adsorbing primarily in pores <10 {angstrom}, the highly microporous ACF and GACs, acting like molecular sieves, exhibited the highest uptakes. For atrazine with an optimum adsorption pore region of 10-20 {angstrom}, which overlaps with the adsorption region of some DOM components, the GACs with a broad pore size distribution and high pore volumes in the 10-20 {angstrom} region had the least impact of DOM on the adsorption. 25 refs., 3 figs., 3 tabs.

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. Apparatus, systems, and methods for ultrasound synthetic aperature focusing

    DOE Patents [OSTI]

    Schuster, George J.; Crawford, Susan L.; Doctor, Steven R.; Harris, Robert V.

    2005-04-12

    One form of the present invention is a technique for interrogating a sample with ultrasound which includes: generating ultrasonic energy data corresponding to a volume of a sample and performing a synthetic aperture focusing technique on the ultrasonic energy data. The synthetic aperture focusing technique includes: defining a number of hyperbolic surfaces which extend through the volume at different depths and a corresponding number of multiple element accumulation vectors, performing a focused element calculation procedure for a group of vectors which are representative of the interior of a designated aperture, performing another focused element calculation procedure for vectors corresponding to the boundary of the aperture, and providing an image corresponding to features of the sample in accordance with the synthetic aperture focusing technique.

  3. 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...

  4. Kapitza problem for the magnetic moments of synthetic antiferromagnetic systems

    SciTech Connect (OSTI)

    Dzhezherya, Yu. I.; Demishev, K. O.; Korenivskii, V. N.

    2012-08-15

    The dynamics of magnetization in synthetic antiferromagnetic systems with the magnetic dipole coupling in a rapidly oscillating field has been examined. It has been revealed that the system can behave similar to the Kapitza pendulum. It has been shown that an alternating magnetic field can be efficiently used to control the magnetic state of a cell of a synthetic antiferromagnet. Analytical relations have been obtained between the parameters of such an antiferromagnet and an external magnetic field at which certain quasistationary states are implemented.

  5. Dual chain synthetic heparin-binding growth factor analogs

    DOE Patents [OSTI]

    Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY)

    2012-04-24

    The invention provides synthetic heparin-binding growth factor analogs having two peptide chains each branched from a branch moiety, such as trifunctional amino acid residues, the branch moieties separated by a first linker of from 3 to about 20 backbone atoms, which peptide chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a second linker, which may be a hydrophobic second linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

  6. Dual chain synthetic heparin-binding growth factor analogs

    DOE Patents [OSTI]

    Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY)

    2009-10-06

    The invention provides synthetic heparin-binding growth factor analogs having two peptide chains each branched from a branch moiety, such as trifunctional amino acid residues, the branch moieties separated by a first linker of from 3 to about 20 backbone atoms, which peptide chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a second linker, which may be a hydrophobic second linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

  7. Resolution and synthetic aperture characterization of sparse radar arrays

    E-Print Network [OSTI]

    Stiles, James Marion; Goodman, N. A.

    2003-07-01

    : RESOLUTION AND SYNTHETIC APERTURE CHARACTERIZATION 923 position in each of three spatial directions. These are, by definition, the spatial frequencies k x (x), k y (x), and k z (x) of the wave scattered from a target at x. Likewise, the fourth term provides..., the transmitting antenna can be focused on the mean scatterer location Ż x by forcing a phase taper of Ş a (l)=#0;?(k 0 l ) † ˘l: (24) Then, the transmit pattern is g(x)= #0;= S A #0;Mw l (l)#0;Mexp(#0;?j˘x † ¤ l ˘l)dl: (25) B. Synthetic Aperture Interpretation...

  8. 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.

  9. 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...

  10. 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.

  11. 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 ...

  12. 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.

  13. 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.

  14. 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).

  15. 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...

  16. 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 ...

  17. 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...

  18. 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.

  19. 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.

  20. 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.

  1. Factors Contributing to Petroleum Foaming. 2. Synthetic Crude Oil Systems

    E-Print Network [OSTI]

    Kilpatrick, Peter K.

    Factors Contributing to Petroleum Foaming. 2. Synthetic Crude Oil Systems Nael N. Zaki, Michael K to the petroleum industry. Nonaqueous foams occur in the production of and refining of crude oil. Crude oil foams can pose major problems for operators of gas/oil separation plants, causing a loss of crude

  2. Co-transport of H+ by a synthetic prodigiosin mimic{

    E-Print Network [OSTI]

    Smith, Bradley D.

    Co-transport of H+ /Cl2 by a synthetic prodigiosin mimic{ Philip A. Gale,*a Mark E. Light,a Beth Mc.1039/b503906a An amidopyrrole with appended imidazole group can bind and co-transport H+ /Cl2 across of the weak bases are compounds that act as H+ /Cl2 co-transporters. The best known examples

  3. SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale M. O. Eshkalak, SPE, S. D of hydrocarbons from the reservoirs, notably shale, is attributed to realizing the key fundamentals of reservoir and mineralogy is crucial in order to identify the "right" pay-zone intervals for shale gas production. Also

  4. Library of libraries: A novel approach in synthetic combinatorial libraries

    E-Print Network [OSTI]

    Lam, Kit S.

    are defined. In other words, the first step of the iterative process consists of screening libraries with veryLibrary of libraries: A novel approach in synthetic combinatorial libraries Nikolai F. Sepetov peptide libraries for pharmacological purposes is not necessarily to find the most active peptide

  5. New synthetic derivatives of triterpenoids in the treatment of cancer 

    E-Print Network [OSTI]

    Papineni, Sabitha

    2009-05-15

    Methyl 2-cyano-3,11-dioxo-18?-olean-1,12-dien-30-oate (?-CDODA-Me) and methyl 2-cyano-3,11-dioxo-18?-olean-1,12-dien-30-oate (?-CDODA-Me ) isomers are synthetic analogs of the naturally occurring triterpenoid glycyrrhetinic ...

  6. HIGH SCHOOL PHYSICS PATHWAY: TEACHERS HELPING TEACHERS THROUGH SYNTHETIC INTERVIEWS*

    E-Print Network [OSTI]

    , physics pedagogy, physics education 1. INTRODUCTION Physics Teaching Web Advisory (Pathway) is a researchHIGH SCHOOL PHYSICS PATHWAY: TEACHERS HELPING TEACHERS THROUGH SYNTHETIC INTERVIEWS* *Published the iterative development of a dynamic web environment for exploring physics pedagogy: the Physics Teaching Web

  7. Electricity Generation from Synthetic Acid-Mine Drainage (AMD) Water

    E-Print Network [OSTI]

    Electricity Generation from Synthetic Acid-Mine Drainage (AMD) Water using Fuel Cell Technologies, 2007. Acid-mine drainage (AMD) is difficult and costly to treat. We investigated a new approach to AMD and systems suitable for scale-up. Introduction Acid-mine drainage (AMD) is a serious environmental problem

  8. Passive Synthetic Aperture Radar Imaging of Ground Moving Targets

    E-Print Network [OSTI]

    Yazici, Birsen

    waves due to illuminating sources of opportunity such as commercial television, radio, and cell phone of opportunity such as radio, cell phone, and television transmission towers. The absence of active signal synthetic aperture radar. A passive radar imaging system uses small, mobile receivers that do not radiate

  9. Synthetic aperture design for increased SAR image rate

    DOE Patents [OSTI]

    Bielek, Timothy P. (Albuquerque, NM); Thompson, Douglas G. (Albuqerque, NM); Walker, Bruce C. (Albuquerque, NM)

    2009-03-03

    High resolution SAR images of a target scene at near video rates can be produced by using overlapped, but nevertheless, full-size synthetic apertures. The SAR images, which respectively correspond to the apertures, can be analyzed in sequence to permit detection of movement in the target scene.

  10. Tunable Signal Processing in Synthetic MAP Kinase Cascades

    E-Print Network [OSTI]

    Collins, James J.

    Tunable Signal Processing in Synthetic MAP Kinase Cascades Ellen C. O'Shaughnessy,1 Santhosh Palani profiles. This work demonstrates that tunable signal processing is inherent to minimal MAPK modules are ubiquitous, versatile signaling modules found in all eukaryotic cells. They transmit and process signals

  11. The formation and evolution of synthetic jets Barton L. Smitha)

    E-Print Network [OSTI]

    Smith, Barton L.

    The formation and evolution of synthetic jets Barton L. Smitha) and Ari Glezer Woodruff School 1997; accepted 6 May 1998 A nominally plane turbulent jet is synthesized by the interactions of a train of a flexible diaphragm in a sealed cavity. Even though the jet is formed without net mass injection

  12. Microwave-induced thermoacoustic tomography: Reconstruction by synthetic aperture

    E-Print Network [OSTI]

    Wang, Lihong

    Microwave-induced thermoacoustic tomography: Reconstruction by synthetic aperture Dazi Feng, Yuan thermoacoustic signals, to which the delay-and-sum algorithm was applied for image reconstruc- tion. We greatly-induced thermoacoustic tomography based on focused transducers. Two mi- crowave sources, which had frequencies of 9 and 3

  13. Magnetic characterization of synthetic titanomagnetites: Quantifying the recording

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    Kasama Centre for Electron Nanoscopy, Technical University of Denmark, Kongens Lyngby, Denmark Rafal, and transmission electron microscopy (TEM) demonstrate the reaction product composition consisted of mainly Fe3- x for visualization of the magnetic behavior of the synthetic Fe3-xTixO4 grains. Energy dispersive X-ray analysis

  14. Entrainment of a Population of Synthetic Genetic Oscillators

    E-Print Network [OSTI]

    Tsimring, Lev S.

    Entrainment of a Population of Synthetic Genetic Oscillators Octavio Mondragón-Palomino,1 Tal-sustained oscillators that adjust their phase to the daily environmental cycles in a process known as entrainment, but quantitative insights on the entrainment of clocks are relatively sparse. We simultaneously tracked the phases

  15. Matching a Human Walking Sequence with a VRML Synthetic Model

    E-Print Network [OSTI]

    Buades Rubio, Jose María

    animation, computer vision, medical rehabilitation, virtual reality and entertainment. There is a greatMatching a Human Walking Sequence with a VRML Synthetic Model J. M. Buades, Ramon Mas and Francisco University of the Balearic Islands 07071 Palma de Mallorca, SPAIN {josemaria,ramon,paco}@anim.uib.es Abstract

  16. A Protophenomenological Analysis of Synthetic Emotion in Robots

    E-Print Network [OSTI]

    MacLennan, Bruce

    J. MacLennan* Department of Electrical Engineering & Computer Science University of Tennessee?" (a chapter submitted for the Handbook of Research on Synthetic Emotions and Sociable Robotics: New a renaissance in the scientific investigation of consciousness, but a fundamental issue has been neglected

  17. 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...

  18. 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, ...

  19. 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...

  20. Safe, secure and ethical? : assessing and regulating risks associated with synthetic biology

    E-Print Network [OSTI]

    Regĺrdh, Pernilla C. (Pernilla Christina)

    2011-01-01

    Synthetic biology is an emerging field, with a rapidly developing academic-industrial base and the promise of extensive product launches over the next few years. An intense debate over the risks and benefits of synthetic ...

  1. 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.

  2. 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.

  3. Method and apparatus for removing heat from electronic devices using synthetic jets

    DOE Patents [OSTI]

    Sharma, Rajdeep; Weaver, Jr., Stanton Earl; Seeley, Charles Erklin; Arik, Mehmet; Icoz, Tunc; Wolfe, Jr., Charles Franklin; Utturkar, Yogen Vishwas

    2014-04-15

    An apparatus for removing heat comprises a heat sink having a cavity, and a synthetic jet stack comprising at least one synthetic jet mounted within the cavity. At least one rod and at least one engaging structure to provide a rigid positioning of the at least one synthetic jet with respect to the at least one rod. The synthetic jet comprises at least one orifice through which a fluid is ejected.

  4. 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.

  5. Synthetic Lung Tumor Data Sets for Comparison of Volumetric Algorithms1

    E-Print Network [OSTI]

    Bernal, Javier

    Synthetic Lung Tumor Data Sets for Comparison of Volumetric Algorithms1 Adele P. Peskin of synthetic lung tumor data in which synthetic tumors of known volume are embedded in clinical lung computerized tomographic (CT) data in different background settings in the lung. Because the change

  6. A comparison between synthetic jets and continuous jets B.L. Smith, G.W. Swift

    E-Print Network [OSTI]

    Smith, Barton L.

    A comparison between synthetic jets and continuous jets B.L. Smith, G.W. Swift Abstract Experimental measurements and flow visualiza- tion of synthetic jets and continuous jets with matched Reynolds numbers are described. Although they have the same profile shape, synthetic jets are wider and slower than

  7. 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.

  8. 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

  9. Renewable Energy from Synthetic Biology (LBNL Science at the Theater)

    ScienceCinema (OSTI)

    Keasling, Jay

    2011-04-28

    Jay Keasling, co-leader of Berkeley Lab's Helios Project, is a groundbreaking researcher in the new scientific field of synthetic biology. In Helios, he directs the biology program, incorporating a range of approaches to increasing the efficacy and economy of plants and cellulose-degrading microbes to make solar-based fuels. He is a UC Berkeley professor of Chemical and Bioengineering, and founder of Amyris Biotechnologies, a company that was honored as a Technology Pioneer for 2006 by the World Economic Forum. Keasling has succeeded in using synthetic biology to develop a yeast-based production scheme for precursors of the antimalarial drug artemisinin in work funded by the Bill & Melinda Gates Foundation.

  10. Synthetic aperture integration (SAI) algorithm for SAR imaging

    DOE Patents [OSTI]

    Chambers, David H; Mast, Jeffrey E; Paglieroni, David W; Beer, N. Reginald

    2013-07-09

    A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. Synthetic Biology: Engineering, Evolution and Design (SEED) Conference 2014

    SciTech Connect (OSTI)

    Voigt, Christopher

    2014-07-01

    SEED2014 focused on advances in the science and technology emerging from the field of synthetic biology. We broadly define this as technologies that accelerate the process of genetic engineering. It highlighted new tool development, as well as the application of these tools to diverse problems in biotechnology, including therapeutics, industrial chemicals and fuels, natural products, and agriculture. Systems spanned from in vitro experiments and viruses, through diverse bacteria, to eukaryotes (yeast, mammalian cells, plants).

  18. Pentavalent Uranium Chemistry - Synthetic Pursuit Of A Rare Oxidation State

    SciTech Connect (OSTI)

    Graves, Christopher R; Kiplinger, Jaqueline L

    2009-01-01

    This feature article presents a comprehensive overview of pentavalent uranium systems in non-aqueous solution with a focus on the various synthetic avenues employed to access this unusual and very important oxidation state. Selected characterization data and theoretical aspects are also included. The purpose is to provide a perspective on this rapidly evolving field and identify new possibilities for future developments in pentavalent uranium chemistry.

  19. CO2 Removal using a Synthetic Analogue of Carbonic Anhydrase

    SciTech Connect (OSTI)

    Harry Cordatos

    2010-09-14

    Project attempts to develop a synthetic analogue for carbonic anhydrase and incorporate it in a membrane for separation of CO2 from coal power plant flue gas. Conference poster presents result of first 9 months of project progress including concept, basic system architecture and membrane properties target, results of molecular modeling for analogue - CO2 interaction, and next steps of testing analogue resistance to flue gas contaminants.

  20. 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...

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

    E-Print Network [OSTI]

    Maryland, Baltimore County, University of

    . Sřndergaard, 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

  2. 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 ...

  3. 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...

  4. 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

  5. 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...

  6. 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...

  7. 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

  8. 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...

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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...

  15. Method for producing and regenerating a synthetic CO[sub 2] acceptor

    DOE Patents [OSTI]

    Lancet, M. S.; Curran, G. P.; Gorin, E.

    1982-05-18

    A method is described for producing a synthetic CO[sub 2] acceptor by feeding a mixture of finely divided silica and at least one finely divided calcium compound selected from the group consisting of calcium oxide and calcium carbonate to a fluidized bed; operating the fluidized bed at suitable conditions to produce pellets of synthetic CO[sub 2] acceptor and recovering the pellets of synthetic CO[sub 2] acceptor from the fluidized bed. Optionally, spent synthetic CO[sub 2] acceptor can be charged to the fluidized bed to produce regenerated pellets of synthetic CO[sub 2] acceptor. 1 fig.

  16. Method for producing and regenerating a synthetic CO.sub.2 acceptor

    DOE Patents [OSTI]

    Lancet, Michael S. (Pittsburgh, PA); Curran, George P. (Pittsburgh, PA); Gorin, Everett (San Rafael, CA)

    1982-01-01

    A method for producing a synthetic CO.sub.2 acceptor by feeding a mixture of finely divided silica and at least one finely divided calcium compound selected from the group consisting of calcium oxide and calcium carbonate to a fluidized bed; operating the fluidized bed at suitable conditions to produce pellets of synthetic CO.sub.2 acceptor and recovering the pellets of synthetic CO.sub.2 acceptor from the fluidized bed. Optionally, spent synthetic CO.sub.2 acceptor can be charged to the fluidized bed to produce regenerated pellets of synthetic CO.sub.2 acceptor.

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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...

  3. 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.

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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...

  12. 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.

  13. 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.

  14. 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.

  15. 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

  16. 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.

  17. 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

  18. 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.

  19. 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.

  20. 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...

  1. 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.

  2. 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.

  3. 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.

  4. 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....

  5. 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.

  6. Apodized RFI filtering of synthetic aperture radar images.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2014-02-01

    Fine resolution Synthetic Aperture Radar (SAR) systems necessarily require wide bandwidths that often overlap spectrum utilized by other wireless services. These other emitters pose a source of Radio Frequency Interference (RFI) to the SAR echo signals that degrades SAR image quality. Filtering, or excising, the offending spectral contaminants will mitigate the interference, but at a cost of often degrading the SAR image in other ways, notably by raising offensive sidelobe levels. This report proposes borrowing an idea from nonlinear sidelobe apodization techniques to suppress interference without the attendant increase in sidelobe levels. The simple post-processing technique is termed Apodized RFI Filtering (ARF).

  7. Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

    SciTech Connect (OSTI)

    Jessica Sanderson

    2007-12-31

    This report presents and discusses results from the project 'Fate of Mercury in Synthetic Gypsum Used for Wallboard Production', performed at five different full-scale commercial wallboard plants. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies involve the capture of mercury in FGD systems. The objective of this study has been to determine whether any mercury is released into the atmosphere at wallboard manufacturing plants when the synthetic gypsum material is used as a feedstock for wallboard production. The project has been co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope included seven discrete tasks, each including a test conducted at various USG wallboard plants using synthetic gypsum from different wet FGD systems. The project was originally composed of five tasks, which were to include (1) a base-case test, then variations representing differing power plant: (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5,could not be conducted as planned and instead was conducted at conditions similar to Task 3. Subsequently an opportunity arose to test gypsum produced from the Task 5 FGD system, but with an additive expected to impact the stability of mercury, so Task 6 was added to the project. Finally, Task 7 was added to evaluate synthetic gypsum produced at a power plant from an additional coal type. In the project, process stacks in the wallboard plant were sampled using the Ontario Hydro method. In every task, the stack locations sampled included a gypsum dryer and a gypsum calciner. In Tasks 1 and 4 through 7, the stack of the dryer for the wet wallboard product was also tested. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. These results and process data were used to construct mercury mass balances across the wallboard plants. The results from the project showed a wide range of percentage mercury losses from the synthetic gypsum feedstocks as measured by the Ontario Hydro method at the process stacks, ranging from 2% to 55% of the mercury in the gypsum feedstock. For the tasks exceeding 10% mercury loss across the wallboard plant, most of the loss occurred across the gypsum calciner. When total wallboard emissions remained below 10%, the primary emission location varied with a much less pronounced difference in emission between the gypsum dryer, calciner and board dryer. For all seven tasks, the majority of the mercury emissions were measured to be in the elemental form (Hg{sup 0}). Overall, the measured mercury loss mass rates ranged from 0.01 to 0.17 grams of mercury per dry ton of synthetic gypsum processed, or 0.01 to 0.4 pounds of mercury released per million square feet of wallboard produced from synthetic gypsum. The Coal Combustion Product Production and Use Survey from the American Coal Ash Association (ACAA) indicate that 7,579,187 short tons of synthetic gypsum were used for wallboard production in 2006. Extrapolating the results of this study to the ACAA industry usage rate, we estimate that mercury releases from wallboard production plants in 2006 ranged between 150 to 3000 pounds for the entire U.S. wallboard industry. With only seven sets of wallboard plant measurements, it is difficult to draw firm conclusions about what variables impact the mercury loss percentages across the wallboard plants. One significant o

  8. Phase correction system for automatic focusing of synthetic aperture radar

    DOE Patents [OSTI]

    Eichel, Paul H. (Albuquerque, NM); Ghiglia, Dennis C. (Placitas, NM); Jakowatz, Jr., Charles V. (Albuquerque, NM)

    1990-01-01

    A phase gradient autofocus system for use in synthetic aperture imaging accurately compensates for arbitrary phase errors in each imaged frame by locating highlighted areas and determining the phase disturbance or image spread associated with each of these highlight areas. An estimate of the image spread for each highlighted area in a line in the case of one dimensional processing or in a sector, in the case of two-dimensional processing, is determined. The phase error is determined using phase gradient processing. The phase error is then removed from the uncorrected image and the process is iteratively performed to substantially eliminate phase errors which can degrade the image.

  9. Synthetic fuel concept to steal CO2 from air

    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 AdministrationRobust,Field-effectWorking With LivermoreSustainable Land LabEnergyNationalScienceSynthetic fuel

  10. Synthetic limbs: Rasmussen's lifelong quest | Princeton Plasma Physics

    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 AdministrationRobust,Field-effectWorking With LivermoreSustainable Land LabEnergyNationalScienceSynthetic

  11. Synthetic muscle developed with PPPL scientists' help launches | Princeton

    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 AdministrationRobust,Field-effectWorking With LivermoreSustainable Land LabEnergyNationalScienceSyntheticPlasma

  12. Sandia National Laboratories: Synthetic Aperture Radar (SAR) Imagery

    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 RoomPreservation ofAlbuquerque AlbuquerqueCybernetics:Defense Systems &Vision,Synthetic

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. Molecular Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite

    E-Print Network [OSTI]

    Hu, Yung-Jin

    2011-01-01

    VI) with the Iron Oxide Goethite, University of California,Values for Synthetic Goethite and Pyrolusite" submitted tothe two Mn-substituted goethite minerals used in this study.

  3. Molecular Interactions of Plutonium(VI) with Synthetic Manganese-Substituted Goethite

    E-Print Network [OSTI]

    Hu, Yung-Jin

    2011-01-01

    E. , Thesis, Reactions of Plutonium(VI) with the Iron Oxideof Uranium, Neptunium, Plutonium, Americium and Technetium;Molecular Interactions of Plutonium(VI) with Synthetic

  4. Uncertainty in synthetic biology for release and possibilities for regulation under the Toxic Substances Control Act

    E-Print Network [OSTI]

    Lightfoot, Shlomiya

    2014-01-01

    The emerging field of synthetic biology is developing rapidly and promises diverse applications. Many anticipated applications, particularly those involving release of engineered microbes into the environment or human ...

  5. Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

    SciTech Connect (OSTI)

    Jessica Sanderson; Gary M. Blythe; Mandi Richardson

    2006-12-01

    This report presents and discusses results from Task 6 of the study 'Fate of Mercury in Synthetic Gypsum Used for Wallboard Production,' performed at a full-scale commercial wallboard plant. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies involve the capture of mercury in FGD systems. The objective of this study is to determine whether any mercury is released into the atmosphere when the synthetic gypsum material is used as a feedstock for wallboard production. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope now includes six discrete tasks, each conducted at various USG wallboard plants using synthetic gypsum from different FGD systems. The project was originally composed of five tasks, which were to include (1) a baseline test, then variations representing differing power plant: (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5, which was to include testing with an alternate FGD reagent, could not be conducted as planned. Instead, Task 5 was conducted at conditions similar to Task 3, although with gypsum from an alternate FGD system. Subsequent to conducting Task 5 under these revised conditions, an opportunity arose to test gypsum produced at the same FGD system, but with an additive (Degussa Corporation's TMT-15) being used in the FGD system. TMT-15 was expected to impact the stability of mercury in synthetic gypsum used to produce wallboard, so Task 6 was added to the project to test this theory. In this project, process stacks in the wallboard plant have been sampled using the Ontario Hydro method. For every task, the stack locations sampled have included a dryer for the wet gypsum as it enters the plant and a gypsum calciner. For Tasks 1, 4, 5 and 6, the stack of the dryer for the wet wallboard product was also tested. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. The Ontario Hydro results, process sample mercury concentration data, and process data were used to construct mercury mass balances across the wallboard plants. Task 6 was conducted at a wallboard plant processing synthetic gypsum from a power plant that fires Eastern bituminous coal. The power plant has a single-loop, open spray tower limestone forced oxidation FGD system, with the forced oxidation conducted in the reaction tank integral with the FGD absorber. The FGD system has gypsum fines blow down as part of the dewatering step. The power plant is equipped with a selective catalytic reduction (SCR) system for NOX emissions control, and the SCR was in service during the time period the gypsum tested was produced. Also, as mentioned above, Degussa additive TMT-15 was being added to the FGD system when this gypsum was produced. The results of the Task 6 stack testing, as measured by the Ontario Hydro method, detected that an average of 55% of the incoming mercury was emitted during wallboard production. These losses were distributed as about 4% across the dryer mill, 6% across the board dryer kiln, and 45% across the kettle calciner. Emissions were similar to what Task 5 results showed on a percentage basis, but about 30% lower on a mass basis. The same power plant FGD system produced the synthetic gypsum used in Task 5 (with no use of TMT-15) and in Task 6 (with TMT-15 added to the FGD system). The lower emissions on a mass basis appeared

  6. Kent and Riegel's Handbook of industrial chemistry and biotechnology. 11th ed.

    SciTech Connect (OSTI)

    Kent, James A. (ed.)

    2007-07-01

    This handbook provides extensive information on plastics, rubber, adhesives, textile fibers, pharmaceutical chemistry, synthetic organic chemicals, soaps and detergents, as well as various other major classes of industrial chemistry. There is detailed coverage of coal utilization technology, dyes and dye intermediates, chlor-alkali and heavy chemicals, paints and pigments, chemical explosives, propellants, petroleum and petrochemicals, natural gas, industrial gases, synthetic nitrogen products, fats and oils, sulfur and sulfuric acid, phosphorous and phosphates, wood products, and sweeteners. The chapter on coal is entitled: coal technology for power, liquid fuels and chemicals. 100 ills.

  7. 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

  8. 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

  9. 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.

  10. 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...

  11. 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.

  12. 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.

  13. Synthetic Spectra from PIC Simulations of Relativistic Collisionless Shocks

    E-Print Network [OSTI]

    Sironi, Lorenzo

    2009-01-01

    We extract synthetic photon spectra from first-principles particle-in-cell simulations of relativistic shocks propagating in unmagnetized pair plasmas. The two basic ingredients for the radiation, namely accelerated particles and magnetic fields, are produced self-consistently as part of the shock evolution. We use the method of Hededal & Nordlund (2005) and compute the photon spectrum via Fourier transform of the electric far-field from a large number of particles, sampled directly from the simulation. We find that the spectrum from relativistic collisionless shocks is entirely consistent with synchrotron radiation in the magnetic fields generated by Weibel instability. We can recover the so-called "jitter'' regime only if we artificially reduce the strength of the electromagnetic fields, such that the wiggler parameter K = qB lambda/mc^2 becomes much smaller than unity ("B" and "lambda" are the strength and scale of the magnetic turbulence, respectively). These findings may place constraints on the orig...

  14. X-ray Moiré deflectometry using synthetic reference images

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

    Stutman, Dan; Valdivia, Maria Pia; Finkenthal, Michael

    2015-06-25

    Moiré fringe deflectometry with grating interferometers is a technique that enables refraction-based x-ray imaging using a single exposure of an object. To obtain the refraction image, the method requires a reference fringe pattern (without the object). Our study shows that, in order to avoid artifacts, the reference pattern must be exactly matched in phase with the object fringe pattern. In experiments, however, it is difficult to produce a perfectly matched reference pattern due to unavoidable interferometer drifts. We present a simple method to obtain matched reference patterns using a phase-scan procedure to generate synthetic Moiré images. As a result, themore »method will enable deflectometric diagnostics of transient phenomena such as laser-produced plasmas and could improve the sensitivity and accuracy of medical phase-contrast imaging.« less

  15. Time-frequency analysis of synthetic aperture radar signals

    SciTech Connect (OSTI)

    Johnston, B.

    1996-08-01

    Synthetic aperture radar (SAR) has become an important tool for remote sensing of the environment. SAR is a set of digital signal processing algorithms that are used to focus the signal returned to the radar because radar systems in themselves cannot produce the high resolution images required in remote sensing applications. To reconstruct an image, several parameters must be estimated and the quality of output image depends on the degree of accuracy of these parameters. In this thesis, we derive the fundamental SAR algorithms and concentrate on the estimation of one of its critical parameters. We show that the common technique for estimating this particular parameter can sometimes lead to erroneous results and reduced quality images. We also employ time-frequency analysis techniques to examine variations in the radar signals caused by platform motion and show how these results can be used to improve output image quality.

  16. Synthetic thrombus model for in vitro studies of laser thrombolysis

    SciTech Connect (OSTI)

    Hermes, R.E.; Trajkovska, K.

    1998-07-01

    Laser thrombolysis is the controlled ablation of a thrombus (blood clot) blockage in a living arterial system. Theoretical modeling of the interaction of laser light with thrombi relies on the ability to perform in vitro experiments with well characterized surrogate materials. A synthetic thrombus formulation may offer more accurate results when compared to in vivo clinical experiments. The authors describe the development of new surrogate materials based on formulations incorporating chick egg, guar gum, modified food starch, and a laser light absorbing dye. The sound speed and physical consistency of the materials were very close to porcine (arterial) and human (venous) thrombi. Photographic and videotape recordings of pulsed dye laser ablation experiments under various experimental conditions were used to evaluate the new material as compared to in vitro tests with human (venous) thrombus. The characteristics of ablation and mass removal were similar to that of real thrombi, and therefore provide a more realistic model for in vitro laser thrombolysis when compared to gelatin.

  17. Characterization of phase evolution during lead immobilization by synthetic hydroxyapatite

    SciTech Connect (OSTI)

    Mavropoulos, Elena [CBPF, Rio de Janeiro (Brazil); Rocha, Nilce C.C. [IQ/UFRJ, Rio de Janeiro (Brazil); Moreira, Josino C. [ENSP/FIOCRUZ, Rio de Janeiro (Brazil); Rossi, Alexandre M. [CBPF, Rio de Janeiro (Brazil); Soares, Gloria A. [Metallurgical and Materials Engineering Department, Federal University of Rio de Janeiro, P.O. Box 68505, Rio de Janeiro, 21941-972, RJ (Brazil)]. E-mail: Gloria@ufrj.br

    2004-09-15

    Immobilization of toxic metals by calcium phosphates is a promising technology for treating contaminated soil, water and wastes. A detailed study on the mechanisms of lead immobilization by hydroxyapatite has been carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). For this, synthetic hydroxyapatite powder were submitted to a sorption process through exposure to an aqueous solution containing 917 mg L{sup -1} of lead for times that varied from 3 min to 54 h. The results obtained reinforce the hypothesis that hydroxypyromorphite formation is the end of a kinetic process in which the hydroxyapatite crystals are continuously dissolved and recrystallized in order to form more stable structures with higher lead content. Consequently, the use of calcium phosphates to immobilize lead ions seems to be technically viable.

  18. 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 ...

  19. 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 ...

  20. 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...

  1. 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,

  2. 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, ...

  3. 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...

  4. 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.

  5. 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...

  6. 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.

  7. 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...

  8. 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

  9. 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...

  10. 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.

  11. 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.

  12. 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.

  13. 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...

  14. 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

  15. 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.

  16. Abstract The ability of Trametes versicolor ATCC 20869 to colonize several natural and synthetic materials (wheat

    E-Print Network [OSTI]

    Ramsay, Juliana

    materials (wheat straw, jute, hemp, maple woodchips, and nylon and poly- ethylene teraphthalate fibers such as woodchips is cheaper. In M. Shin · T.

  17. A NEW SYNTHETIC LIBRARY OF THE NEAR-INFRARED Ca II TRIPLET INDICES. I. INDEX DEFINITION, CALIBRATION, AND RELATIONS WITH STELLAR ATMOSPHERIC PARAMETERS

    SciTech Connect (OSTI)

    Du, W.; Luo, A. L.; Zhao, Y. H. E-mail: lal@nao.cas.cn

    2012-02-15

    Adopting the SPECTRUM package, which is a stellar spectral synthesis program, we have synthesized a comprehensive set of 2890 near-infrared (NIR) synthetic spectra with a resolution and wavelength sampling similar to the Sloan Digital Sky Survey (SDSS) and the forthcoming Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectra. During the synthesis, we applied the 'New grids of ATLAS9 Model Atmosphere' to develop a grid of local thermodynamic equilibrium model atmospheres for effective temperatures (T{sub eff}) ranging from 3500 to 7500 K, for surface gravities (log g) from 0.5 to 5.0 dex, for metallicities ([Fe/H]) from -4.0 to 0.5 dex, and for solar ([{alpha}/Fe] = 0.0 dex) and non-solar ([{alpha}/Fe] = +0.4 dex) abundances. This synthetic stellar library is composed of 1350 solar scaled abundance (SSA) and 1530 non-solar scaled abundance (NSSA) spectra, grounding on which we have defined a new set of NIR Ca II triplet indices and an index CaT as the sum of the three. These defined indices were automatically measured on every spectrum of the synthetic stellar library and calibrated with the indices computed on the observational spectra from the INDO-U.S. stellar library. In order to check the effect of {alpha}-element enhancement on the so-defined Ca II indices, we compared indices measured on the SSA spectra with those on the NSSA ones at the same trine of stellar parameters (T{sub eff}, log g, [Fe/H]); luckily, little influences of {alpha}-element enhancement were found. Furthermore, comparisons of our synthetic indices with the observational ones from measurements on the INDO-U.S. stellar library, the SDSS-DR7 and SDSS-DR8 spectroscopic survey are presented, respectively, for dwarfs and giants in specific. For dwarfs, our synthetic indices could well reproduce the behaviors of the observational indices versus stellar parameters, which verifies the validity of our index definitions for dwarfs. For giants, the consistency between our synthetic indices and the observational ones does not appear to be as good. However, a new synthetic library of NIR Ca II indices has been founded for deeper studies on the NIR wave band of stellar spectra, and this library is particularly appropriate for the SDSS and the forthcoming LAMOST stellar spectra. We have regressed the strength of the CaT index as a function of stellar parameters for both dwarfs and giants after a series of experimental investigations into relations of the indices with stellar parameters. For dwarfs, log g has little effect on the indices, while [Fe/H] and T{sub eff} play a role together. The leading factor is probably [Fe/H], which changes the strength of the indices by a positive trend. For giants, log g starts to influence the strength of the indices by a negative trend for the metal-poor, and even impact deeply for the metal-rich; besides, [Fe/H] and T{sub eff} still matter. In addition, we briefly discussed the major differences between our Ca II triplet indices and the CaHK doublet indices. Ultimately, a supplemental experiment was carried out to show that spectral noises do have effects on our set of NIR Ca II indices. However, the influence is not weak enough to be ignored if the signal-to-noise ratio falls below 20.

  18. THREE-DIMENSIONAL LONGWAVE INFRARED (LWIR) SYNTHETIC IMAGE GENERATION INCORPORATING ANGULAR EMJSSWITY EFFECTS USING RAY-

    E-Print Network [OSTI]

    Salvaggio, Carl

    . These routines require a sequence of images to evaluate tracking algorithms. The evaluation of sensor performanceTHREE-DIMENSIONAL LONGWAVE INFRARED (LWIR) SYNTHETIC IMAGE GENERATION INCORPORATING ANGULAR Memorial Drive Rochester, New York 14623-0887 ABSTRAO A technique for longwave infrared (LWIR) synthetic

  19. Monitoring of SAGD Process: Seismic Interpretation of Ray+Born Synthetic 4D Data

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Monitoring of SAGD Process: Seismic Interpretation of Ray+Born Synthetic 4D Data C. Joseph1, G ­ Monitoring of SAGD Process: Seismic Interpretation of Ray+Born Synthetic 4D Data ­ The objective of this study is to evaluate which production information can be deduced from a 4D seismic survey during

  20. Computational Study of the Effect of Slot Orientation on Synthetic Jet-Based

    E-Print Network [OSTI]

    Mittal, Rajat

    -space average of jet exit velocity during the expulsion phase, m/sec vJ = jet exit velocity, m/sec v = cross-stream1 Computational Study of the Effect of Slot Orientation on Synthetic Jet-Based Separation Control, MD-21218 Abstract A computational study is conducted to explore the effect of synthetic jet

  1. Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic

    E-Print Network [OSTI]

    Boyer, Edmond

    Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic SAGD and Seismic Attributes: Application to a Synthetic SAGD Produced Field Case -- The joint use of production such as facies, porosity and permeability into reservoirs from production data and seismic attributes

  2. Numerical Study of Large Aspect-Ratio Synthetic Jets B. R. Ravi*

    E-Print Network [OSTI]

    Mittal, Rajat

    Numerical Study of Large Aspect-Ratio Synthetic Jets B. R. Ravi* and R. Mittal Department jets. A rectangular synthetic jet of aspect-ratio (AR) 8.0 issuing into quiescent air at jet Reynolds number of 300 and Stokes numbers of 6.84 and a jet of infinite aspect ratio with jet Reynolds number 200

  3. The Evolutionary Systems Biology Team Synthetic Biology/Citizen Science Post-doctoral position

    E-Print Network [OSTI]

    The Evolutionary Systems Biology Team Synthetic Biology/Citizen Science Post-doctoral position We in citizen science projects.The post-doc will join the extended CRI lab that includes synthetic and systems-sourcing, DIY approaches and gamification as part of a new European- funded project, Citizen CyberLab - a three

  4. Facilitated Phospholipid Flip-Flop Using Synthetic Steroid-Derived Translocases

    E-Print Network [OSTI]

    Smith, Bradley D.

    Facilitated Phospholipid Flip-Flop Using Synthetic Steroid-Derived Translocases Timothy N. Lambert research.4 Previously, we have reported that tris(2-aminoethyl)amine (tren)-derived translocases can of significantly more active synthetic translocases derived from cholic acid.6 Cholate derivatives 1-5 were

  5. 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.

  6. 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...

  7. 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

  8. 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

  9. 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...

  10. 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

  11. 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

  12. 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

  13. Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

    SciTech Connect (OSTI)

    Jessica Marshall Sanderson

    2006-06-01

    This report presents and discusses results from Task 5 of the study ''Fate of Mercury in Synthetic Gypsum Used for Wallboard Production,'' performed at a full-scale commercial wallboard plant. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. The FGD process is used to control the sulfur dioxide emissions which would result in acid rain if not controlled. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies developed for power plants involve the capture of mercury in FGD systems. The objective of this study is to determine whether any mercury is released into the atmosphere when the synthetic gypsum material is used as a feedstock for wallboard production. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope includes five discrete tasks, each conducted at various USG wallboard plants using synthetic gypsum from different FGD systems. The five tasks were to include (1) a baseline test, then variations representing differing power plant (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5, which was to evaluate gypsum produced from an alternate FGD reagent, could not be conducted as planned. Instead, Task 5 was conducted at conditions similar to a previous task, Task 3, although with gypsum from an alternate FGD system. In this project, process stacks in the wallboard plant have been sampled using the Ontario Hydro method. The stack locations sampled for each task include a dryer for the wet gypsum as it enters the plant and a gypsum calciner. The stack of the dryer for the wet wallboard product was also tested as part of this task, and was tested as part of Tasks 1 and 4. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. The Ontario Hydro results, process sample mercury concentration data, and process data were used to construct mercury mass balances across the wallboard plants. Task 5 was conducted at a wallboard plant processing synthetic gypsum from a power plant that fires Eastern bituminous coal. The power plant is equipped with a selective catalytic reduction (SCR) system for NOX emissions control, but the SCR was bypassed during the time period the gypsum tested was produced. The power plant has a single-loop, open spray tower, limestone reagent FGD system, with forced oxidation conducted in a reaction tank integral with the FGD absorber. The FGD system has gypsum fines blow down as part of the dewatering step. Gypsum fines blow down is believed to be an important variable that impacts the amount of mercury in the gypsum byproduct and possibly its stability during the wallboard process. The results of the Task 5 stack testing, as measured by the Ontario Hydro method, detected that an average of 51% of the incoming mercury in the FGD gypsum was emitted during wallboard production. These losses were distributed as 2% or less each across the wet gypsum dryer and product wallboard dryer, and about 50% across the gypsum calciner. Emissions were similar to what Task 3 results showed, on both a percentage and a mass basis, for gypsum produced by a power plant firing bituminous coal and also having gypsum fines blow down as part of the FGD dewatering scheme. As was seen in the Task 1 through 4 results, most of the mercury detected in the stack testing on the wet gypsum dryer and kettle calciner was in the form of elemental mercury. In the wallboard dryer kiln, a more signific

  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. Lynx: A High-Resolution Synthetic Aperture Radar

    SciTech Connect (OSTI)

    Doerry, A.W.; Hensley, W.H.; Pace, F.; Stence, J.; Tsunoda, S.I.; Walker, B.C.; Woodring, M.

    1999-03-08

    Lynx is a high resolution, synthetic aperture radar (SAR) that has been designed and built by Sandia National Laboratories in collaboration with General Atomics (GA). Although Lynx may be operated on a wide variety of manned and unmanned platforms, it is primarily intended to be fielded on unmanned aerial vehicles. In particular, it may be operated on the Predator, I-GNAT, or Prowler II platforms manufactured by GA Aeronautical Systems, Inc. The Lynx production weight is less than 120 lb. and has a slant range of 30 km (in 4 mm/hr rain). It has operator selectable resolution and is capable of 0.1 m resolution in spotlight mode and 0.3 m resolution in stripmap mode. In ground moving target indicator mode, the minimum detectable velocity is 6 knots with a minimum target cross-section of 10 dBsm. In coherent change detection mode, Lynx makes registered, complex image comparisons either of 0.1 m resolution (minimum) spotlight images or of 0.3 m resolution (minimum) strip images. The Lynx user interface features a view manager that allows it to pan and zoom like a video camera. Lynx was developed under corporate finding from GA and will be manufactured by GA for both military and commercial applications. The Lynx system architecture will be presented and some of its unique features will be described. Imagery at the finest resolutions in both spotlight and strip modes have been obtained and will also be presented.

  4. 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...

  5. 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

  6. 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

  7. Experimental Study on Shear Fatigue Behavior and Stiffness Performance of Warm Mix Asphalt by adding Synthetic Wax

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by adding Synthetic Wax C. Petita , A. Milliena , F. Canestrarib , V. Pannunziob , A. Virgilib a Université.petit@unilim.fr , Phone : +33555934519 Abstract Synthetic waxes produced by standard and registered processes may be used. The present article serves to compare the mechanical performance of a WMA produced by adding synthetic wax

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. Experimental Demonstration of a Synthetic Lorentz Force by Using Radiation Pressure

    E-Print Network [OSTI]

    Šanti?, N; Aumiler, D; Buljan, H; Ban, T

    2015-01-01

    Synthetic magnetism in cold atomic gases opened the doors to many exciting novel physical systems and phenomena. Ubiquitous are the methods used for the creation of synthetic magnetic fields. They include rapidly rotating Bose-Einstein condensates employing the analogy between the Coriolis and the Lorentz force, and laser-atom interactions employing the analogy between the Berry phase and the Aharonov-Bohm phase. Interestingly, radiation pressure - being one of the most common forces induced by light - has not yet been used for synthetic magnetism. We experimentally demonstrate a synthetic Lorentz force, based on the radiation pressure and the Doppler effect, by observing the centre-of-mass motion of a cold atomic cloud. The force is perpendicular to the velocity of the cold atomic cloud, and zero for the cloud at rest. Our novel concept is straightforward to implement in a large volume, for a broad range of velocities, and can be extended to different geometries.

  16. Syntrophic exchange in synthetic microbial communities Michael T. Meea,b

    E-Print Network [OSTI]

    Collins, James J.

    modeling Microbes are abundantly found in almost every part of the world, living in communities synthetic microbiomes for various biotechnological applications (1­3). Numerous such examples have been

  17. Revisiting the security of speaker verification systems against imposture using synthetic speech 

    E-Print Network [OSTI]

    De Leon, P. L.; Apsingekar, V. R.; Pucher, M.; Yamagishi, Junichi

    2010-01-01

    In this paper, we investigate imposture using synthetic speech. Although this problem was first examined over a decade ago, dramatic improvements in both speaker verification (SV) and speech synthesis have renewed ...

  18. Global Synthetic & Bio-Based Lubricants Market | OpenEI Community

    Open Energy Info (EERE)

    picture Submitted by John55364(100) Contributor 14 May, 2015 - 05:53 Expansion of Automotive Industries to Boost the Global Synthetic and Bio-Based Lubricants Market Global...

  19. Tools and reference standards supporting the engineering and evolution of synthetic biological systems

    E-Print Network [OSTI]

    Kelly, Jason R. (Jason Robert)

    2008-01-01

    Biological engineers have constructed a number of multi-part synthetic biological systems that conduct logical operations on input signals, produce oscillatory output signals, store memory, or produce desired products. ...

  20. Identification of conserved chromatin-regulatory complexes among the class B synthetic multivulva proteins

    E-Print Network [OSTI]

    Harrison, Melissa M

    2006-01-01

    The class A, B, and C synthetic Multivulva (synMuv) genes act redundantly to antagonize Ras-mediated vulval induction in C. elegans. Many of these genes encode proteins that are likely to function in transcriptional ...

  1. A portable RNA sequence whose recognition by a synthetic antibody facilitates structural determination

    E-Print Network [OSTI]

    Koldobskaya, Yelena

    RNA crystallization and phasing represent major bottlenecks in RNA structure determination. Seeking to exploit antibody fragments as RNA crystallization chaperones, we have used an arginine-enriched synthetic Fab library ...

  2. High-field remanence properties of synthetic and natural submicrometre haematites and goethites: significance

    E-Print Network [OSTI]

    High-field remanence properties of synthetic and natural submicrometre haematites and goethites September 2004 Editor: V. Courtillot Abstract Haematite and goethite are significant magnetic components both of marine and terrestrial sediments. Variable magnetic behaviour in haematite and goethite has

  3. Landauer in the age of synthetic biology: energy consumption and information processing in biochemical networks

    E-Print Network [OSTI]

    Mehta, Pankaj; Schwab, David J

    2015-01-01

    A central goal of synthetic biology is to design sophisticated synthetic cellular circuits that can perform complex computations and information processing tasks in response to specific inputs. The tremendous advances in our ability to understand and manipulate cellular information processing networks raises several fundamental physics questions: How do the molecular components of cellular circuits exploit energy consumption to improve information processing? Can one utilize ideas from thermodynamics to improve the design of synthetic cellular circuits and modules? Here, we summarize recent theoretical work addressing these questions. Energy consumption in cellular circuits serves five basic purposes: (1) increasing specificity, (2) manipulating dynamics, (3) reducing variability, (4) amplifying signal, and (5) erasing memory. We demonstrate these ideas using several simple examples and discuss the implications of these theoretical ideas for the emerging field of synthetic biology. We conclude by discussing h...

  4. Synthetic hepcidin causes rapid dose-dependent hypoferremia and is concentrated in ferroportin-containing organs

    E-Print Network [OSTI]

    Rivera, Seth; Nemeth, E; Gabayan, V; Lopez, M A; Farshidi, D; Ganz, T

    2005-01-01

    M). 8 Figure 1. Hepcidin causes a dose-dependent fall inNUMBER 6 Figure 3. Hepcidin causes a rapid, sustained fallRED CELLS Synthetic hepcidin causes rapid dose-dependent

  5. Structural Analysis of Human and Bovine Bone for Development of Synthetic Materials 

    E-Print Network [OSTI]

    Jang, Eunhwa

    2012-10-19

    With increasing demands in bone repair and replacement, this research investigates the microstructure, properties and performance of bovine bone, human bone, and synthetic materials. Doing so, experimental approaches were used to exam and compare...

  6. Synthetic mimics of mammalian cell surface receptors: prosthetic molecules that augment living cells

    E-Print Network [OSTI]

    Peterson, Blake R.

    2005-09-08

    -alkyl derivatives of 3?-cholesterylamine linked to motifs that bind cell-impermeable ligands. When added to living mammalian cells, these synthetic receptors insert into cellular plasma membranes, project ligand-binding small molecules or peptides from the cell...

  7. Volumetric analysis of fish swimming hydrodynamics using synthetic aperture particle image velocimetry

    E-Print Network [OSTI]

    Mendelson, Leah Rose

    2013-01-01

    Abstract This thesis details the implementation of a three-dimensional PIV system to study the hydrodynamics of freely swimming Giant Danio (Danio aequipinnatus). Volumetric particle fields are reconstructed using synthetic ...

  8. New target detector based on geometrical perturbation filters for polarimetric Synthetic Aperture Radar (POL-SAR) 

    E-Print Network [OSTI]

    Marino, Armando

    2010-01-01

    Synthetic Aperture Radar (SAR) is an active microwave remote sensing system able to acquire high resolution images of the scattering behaviour of an observed scene. The contribution of SAR polarimetry (POLSAR) in detection ...

  9. Strategies for designing, testing and demonstrating safety : what synthetic biology can learn from retrospective cases

    E-Print Network [OSTI]

    Yeddanapudi, Neelima, 1976-

    2009-01-01

    Synthetic biology is an emerging technology field within the realm of genetic engineering, differing from traditional genetic engineering in that it focuses on the modularization of genetic parts and the creation of de ...

  10. Modeling of D/C motor driven synthetic jet acutators for flow separation control 

    E-Print Network [OSTI]

    Balasubramanian, Ashwin Kumar

    2004-11-15

    The objective of this research is to present a theoretical study of the compressibility effects on the performance of an electric D/C motor driven synthetic jet actuator for flow separation control. Hot wire anemometer experiments were conducted...

  11. Ribozyme-based insulator parts buffer synthetic circuits from genetic context

    E-Print Network [OSTI]

    Lou, Chunbo

    Synthetic genetic programs are built from circuits that integrate sensors and implement temporal control of gene expression. Transcriptional circuits are layered by using promoters to carry the signal between circuits. In ...

  12. Interbilayer-crosslinked multilamellar vesicles as synthetic vaccines for potent humoral and cellular immune responses

    E-Print Network [OSTI]

    Moon, James J.

    Vaccines based on recombinant proteins avoid the toxicity and antivector immunity associated with live vaccine (for example, viral) vectors, but their immunogenicity is poor, particularly for CD8+ T-cell responses. Synthetic ...

  13. Focused synthetic aperture radar processing of ice-sounder data collected over the Greenland ice sheet

    E-Print Network [OSTI]

    Legarsky, J.; Gogineni, Sivaprasad; Akins, T. L.

    2001-10-01

    We developed a synthetic aperture radar (SAR) processing algorithm for airborne/spaceborne ice-sounding radar systems and applied it to data collected in Greenland. By using focused SAR (phase-corrected coherent averaging), we improved along...

  14. 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.

  15. 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...

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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.

  3. Communication Origin of the thermoelectric behavior of steel fiber cement paste

    E-Print Network [OSTI]

    Chung, Deborah D.L.

    Communication Origin of the thermoelectric behavior of steel fiber cement paste Sihai Wen, D fiber cement. The scattering sites include the fiber­matrix interface, which is like a pn junction, since the fiber and cement paste have opposite signs of the absolute thermoelectric power

  4. 12/22/2000 State of Art Fiber Optic 1 UTILITY APPLICATION OF

    E-Print Network [OSTI]

    12/22/2000 State of Art Fiber Optic 1 UTILITY APPLICATION OF FIBER OPTIC CABLES George G. Karady Arizona State University 2000 © Arizona State University. All rights reserved. #12;12/22/2000 State of Art) Wrap-type · 3) ADSS (all dielectric self supporting #12;12/22/2000 State of Art Fiber Optic 3 FIBER

  5. Effect of optically modified polyethylene terephthalate fiber socks on chronic foot pain

    E-Print Network [OSTI]

    York, Robyn MB; Gordon, Ian L

    2009-01-01

    of optically modified polyethylene terephthalate fiber sockswhether socks made from polyethylene terephthalate (PET)

  6. Fibers and fabrics with insulating, water-proofing, and flame-resistant properties

    DOE Patents [OSTI]

    Hrubesh, Lawrence W.; Poco, John F.; Coronado, Paul R.

    2004-04-20

    Fibers, and fabrics produced from the fibers, are made water repellent, fire-retardant and/or thermally insulating by filling void spaces in the fibers and/or fabrics with a powdered material. When the powder is sufficiently finely divided, it clings tenaciously to the fabric's fibers and to itself, resisting the tendency to be removed from the fabric.

  7. Effect of Solvent Evaporation on Fiber Morphology in Rotary Jet Holly McIlwee Golecki,,

    E-Print Network [OSTI]

    Parker, Kevin Kit

    and solvent evaporation enables production of nanoscale polymer fibers. RJS surpasses the electrospinning

  8. Method of making a continuous ceramic fiber composite hot gas filter

    DOE Patents [OSTI]

    Hill, Charles A. (Lynchburg, VA); Wagner, Richard A. (Lynchburg, VA); Komoroski, Ronald G. (Lynchburg, VA); Gunter, Greg A. (Lynchburg, VA); Barringer, Eric A. (Lynchburg, VA); Goettler, Richard W. (Lynchburg, VA)

    1999-01-01

    A ceramic fiber composite structure particularly suitable for use as a hot gas cleanup ceramic fiber composite filter and method of making same from ceramic composite material has a structure which provides for increased strength and toughness in high temperature environments. The ceramic fiber composite structure or filter is made by a process in which a continuous ceramic fiber is intimately surrounded by discontinuous chopped ceramic fibers during manufacture to produce a ceramic fiber composite preform which is then bonded using various ceramic binders. The ceramic fiber composite preform is then fired to create a bond phase at the fiber contact points. Parameters such as fiber tension, spacing, and the relative proportions of the continuous ceramic fiber and chopped ceramic fibers can be varied as the continuous ceramic fiber and chopped ceramic fiber are simultaneously formed on the porous vacuum mandrel to obtain a desired distribution of the continuous ceramic fiber and the chopped ceramic fiber in the ceramic fiber composite structure or filter.

  9. Procedure for matching synfuel users with potential suppliers. Appendix B. Proposed and ongoing synthetic fuel production projects

    SciTech Connect (OSTI)

    1981-08-07

    To assist the Department of Energy, Office of Fuels Conversion (OFC), in implementing the synthetic fuel exemption under the Powerplant and Industrial Fuel Use Act (FUA) of 1978, Resource Consulting Group, Inc. (RCG), has developed a procedure for matching prospective users and producers of synthetic fuel. The matching procedure, which involves a hierarchical screening process, is designed to assist OFC in: locating a supplier for a firm that wishes to obtain a synthetic fuel exemption; determining whether the fuel supplier proposed by a petitioner is technically and economically capable of meeting the petitioner's needs; and assisting the Synthetic Fuels Corporation or a synthetic fuel supplier in evaluating potential markets for synthetic fuel production. A data base is provided in this appendix on proposed and ongoing synthetic fuel production projects to be used in applying the screening procedure. The data base encompasses a total of 212 projects in the seven production technologies.

  10. Process for gasification using a synthetic CO.sub.2 acceptor

    DOE Patents [OSTI]

    Lancet, Michael S. (Pittsburgh, PA); Curran, George P. (Pittsburgh, PA)

    1980-01-01

    A gasification process is disclosed using a synthetic CO.sub.2 acceptor consisting essentially of at least one compound selected from the group consisting of calcium oxide and calcium carbonate supported in a refractory carrier matrix, the carrier having the general formula Ca.sub.5 (SiO.sub.4).sub.2 CO.sub.3. A method for producing the synthetic CO.sub.2 acceptor is also disclosed.

  11. Lighting system with thermal management system having point contact synthetic jets

    DOE Patents [OSTI]

    Arik, Mehmet; Weaver, Stanton Earl; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Sharma, Rajdeep

    2013-12-10

    Lighting system having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system includes a plurality of synthetic jets. The synthetic jets are arranged within the lighting system such that they are secured at contact points.

  12. Muffle furnace evaluation of FGD sludge-coal-clay mixtures as potential synthetic aggregates 

    E-Print Network [OSTI]

    Pettit, Jesse William

    1978-01-01

    MUFFLE FURNACE EVALUATION OF FGD SLUDGE-COAL-CLAY MIXTURES AS POTENTIAL SYNTHETIC AGGREGATES A Thesis JESSE WILLIAM PETTIT Submitted to the Graduate College of Texas ASM University in Partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1978 Major Suoject: Civil Engineering MUFFLE FURNACE EVALUATION OF FGD SLUDGE-COAL-CLAY MIXTURES AS POTENTIAL SYNTHETIC AGGREGATES A Theseus by JESSE WILLIAM PETTIT Approved as to style and content by: r n of Commi tee...

  13. Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials

    DOE Patents [OSTI]

    Woodward, J.

    1998-12-01

    A method for enzymatically separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials. The cellulosic material, such as newsprint, is introduced into a first chamber containing a plastic canvas basket. This first chamber is in fluid communication, via plastic tubing, with a second chamber containing cellobiase beads in a plastic canvas basket. Cellulase is then introduced into the first chamber. A programmable pump then controls the flow rate between the two chambers. The action of cellulase and stirring in the first chamber results in the production of a slurry of newsprint pulp in the first chamber. This slurry contains non-inked fibers, inked fibers, and some cellobiose. The inked fibers and cellobiose flow from the first chamber to the second chamber, whereas the non-inked fibers remain in the first chamber because they are too large to pass through the pores of the plastic canvas basket. The resulting non-inked and inked fibers are then recovered. 6 figs.

  14. Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials

    DOE Patents [OSTI]

    Woodward, Jonathan (Kingston, TN)

    1998-01-01

    A method for enzymatically separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials. The cellulosic material, such as newsprint, is introduced into a first chamber containing a plastic canvas basket. This first chamber is in fluid communication, via plastic tubing, with a second chamber containing cellobiase beads in a plastic canvas basket. Cellulase is then introduced into the first chamber. A programmable pump then controls the flow rate between the two chambers. The action of cellulase and stirring in the first chamber results in the production of a slurry of newsprint pulp in the first chamber. This slurry contains non-inked fibers, inked fibers, and some cellobiose. The inked fibers and cellobiose flow from the first chamber to the second chamber, whereas the non-inked fibers remain in the first chamber because they are too large to pass through the pores of the plastic canvas basket. The resulting non-inked and inked fibers are then recovered.

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

    DOE Patents [OSTI]

    Weeks, J.K. Jr.; Gensse, C.

    1993-09-14

    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. 8 figures.

  16. Interactions of Jet Fuels with Nitrile O-Rings: Petroleum-Derived versus Synthetic Fuels

    SciTech Connect (OSTI)

    Gormley, R.J.; Link, D.D.; Baltrus, J.P.; Zandhuis, P.H.

    2008-01-01

    A transition from petroleum-derived jet fuels to blends with Fischer-Tropsch (F-T) fuels, and ultimately fully synthetic hydro-isomerized F-T fuels has raised concern about the fate of plasticizers in nitrile-butadiene rubber o-rings that are contacted by the fuels as this transition occurs. The partitioning of plasticizers and fuel molecules between nitrile o-rings and petroleum-derived, synthetic, and additized-synthetic jet fuels has been measured. Thermal desorption of o-rings soaked in the various jet fuels followed by gas chromatographic analysis with a mass spectrometric detector showed many of the plasticizer and stabilizer compounds were removed from the o-rings regardless of the contact fuel. Fuel molecules were observed to migrate into the o-rings for the petroleum-derived fuel as did both the fuel and additive for a synthetic F-T jet fuel additized with benzyl alcohol, but less for the unadditized synthetic fuel. The specific compounds or classes of compounds involved in the partitioning were identified and a semiquantitative comparison of relative partitioning of the compounds of interest was made. The results provide another step forward in improving the confidence level of using additized, fuIly synthetic jet fuel in the place of petroleum-derived fueL

  17. Interactions of Jet Fuels with Nitrile O-Rings: Petroleum-Derived versus Synthetic Fuels

    SciTech Connect (OSTI)

    Gormley, R.J.; Link, D.D.; Baltrus, J.P.; Zandhuis, P.H.

    2009-01-01

    A transition from petroleum-derived jet fuels to blends with Fischer-Tropsch (F-T) fuels, and ultimately fully synthetic hydro-isomerized F-T fuels has raised concern about the fate of plasticizers in nitrile-butadiene rubber a-rings that are contacted by the fuels as this transition occurs. The partitioning of plasticizers and fuel molecules between nitrile a-rings and petroleum-derived, synthetic, and additized-synthetic jet fuels has been measured. Thermal desorption of o-rings soaked in the various jet fuels followed by gas chromatographic analysis with a mass spectrometric detector showed many of the plasticizer and stabilizer compounds were removed from the o-rings regardless of the contact fuel. Fuel molecules were observed to migrate into the o-rings for the petroleum-derived fuel as did both the fuel and additive for a synthetic F-T jet fuel additized with benzyl alcohol, but less for the unadditized synthetic fuel. The specific compounds or classes of compounds involved in the partitioning were identified and a semiquantitative comparison of relative partitioning of the compounds of interest was made. The results provide another step forward in improving the confidence level of using additized, fully synthetic jet fuel in the place of petroleum-derived fuel.

  18. Masters Thesis Optimization of fiber-based optical microcavities

    E-Print Network [OSTI]

    Hänsch, Theodor W.

    -machining of optical fibers - characterization of surface profiles with a home-built white light interferometer spatio-temporal confinement of light, i.e. the combination of a large quality factor and a microscopic

  19. Synthesis of electromagnetic modes in photonic band gap fibers

    E-Print Network [OSTI]

    Hu, Qichao

    2007-01-01

    In this paper, we report on the successful synthesis of three individual modes, HE11, TEo0, and TE02 for transmission in photonic band gap fibers at near infrared wavelengths. We measure the propagation losses of the HE11 ...

  20. Natural stiffening increases flaw tolerance of biological fibers

    E-Print Network [OSTI]

    Giesa, Tristan

    Many fibers in biomaterials such as tendon, elastin, or silk feature a nonlinear stiffening behavior of the stress-strain relationship, where the rigidity of the material increases severely as the material is being stretched. ...

  1. Hermetic fiber optic-to-metal connection technique

    DOE Patents [OSTI]

    Kramer, Daniel P. (Centerville, OH)

    1992-09-01

    A glass-to-glass hermetic sealing technique is disclosed which can be used to splice lengths of glass fibers together. A solid glass preform is inserted into the cavity of a metal component which is then heated to melt the glass. An end of an optical fiber is then advanced into the molten glass and the entire structure cooled to solidify the glass in sealing engagement with the optical fiber end and the metal cavity. The surface of the re-solidified glass may be machined for mating engagement with another component to make a spliced fiber optic connection. The resultant structure has a helium leak rate of less than 1.times.10.sup.-8 cm.sup.3 /sec.

  2. Hollow-Fiber Membrane Compressed Air Drying System

    Broader source: Energy.gov [DOE]

    With the support of a NICE3 grant, a new hollow-fiber membrane for dehydrating gases has been developed by Air Products and Chemicals, Inc. The membrane has 5 times higher water vapor permeation...

  3. Fiber optic signal amplifier using thermoelectric power generation

    DOE Patents [OSTI]

    Hart, M.M.

    1993-01-01

    A remote fiber optic signal amplifier for use as a repeater/amplifier, such as in transoceanic communication, powered by a Pu{sub 238} or Sr{sub 90} thermoelectric generator. The amplifier comprises a unit with connections on the receiving and sending sides of the communications system, and an erbium-doped fiber amplifier connecting each sending fiber to each receiving fiber. The thermoelectric generator, preferably a Pu{sub 238} or Sr{sub 90} thermoelectric generator delivers power to the amplifiers through a regulator. The heat exchange surfaces of the thermoelectric generator are made of material resistant to corrosion and biological growth and are directly exposed to the outside, such as the ocean water in transoceanic communications.

  4. Method for dissolution and stabilization of silica-rich fibers

    DOE Patents [OSTI]

    Jantzen, C.M.

    1997-11-11

    A method is described for dissolving silica-rich fibers such as borosilicate fibers, fiberglass and asbestos to stabilize them for disposal. The method comprises (1) immersing the fibers in hot, five-weight-percent sodium hydroxide solution until the concentration of dissolved silica reaches equilibrium and a only a residue is left (about 48 hours), then immersing the residue in hot, five-weight-percent nitric acid until the residue dissolves (about 96 hours). After adjusting the pH of the dissolved fibers to be caustic, the solution can then be added to a waste vitrification stream for safe disposal. The method is useful in disposing contaminated HEME and HEPA filters. 1 fig.

  5. Loading rubidium atoms into a hollow core fiber

    E-Print Network [OSTI]

    Chu, Yiwen

    2007-01-01

    We demonstrate a procedure for cooling, trapping, and transferring rubidium atoms into a hollow core photonic band gap fiber. The atoms are first collected in a magneto-optical trap (MOT) and then cooled using polarization ...

  6. Transverse lightwave circuits in microstructured optical fibers: resonator

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    Skorobogatiy ´Ecole Polytechnique de Montr´eal, G´enie Physique, C.P. 6079, succ. Centre-Ville Montreal, Qu Abstract: Novel type of microstructured optical fiber couplers is introduced where energy transfer

  7. Calling all “Fiberhoods”: Google Fiber and the Politics of Visibility

    E-Print Network [OSTI]

    Halegoua, Germaine R.

    2014-01-01

    and use, and experiment with new deployment models for large scale fiber optic infrastructure in the US. However, the author focuses on how the process of transformation rendered certain pre-existing digital divides and inequities more visible rather than...

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

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

    would need to be developed. Previous work has sought to use lignin from pulp and paper mills as a feedstock for carbon fiber, with varying levels of success. Current...

  9. Fabrication and characterization of thermally drawn fiber capacitors

    E-Print Network [OSTI]

    Lestoquoy, Guillaume

    We report on the fabrication of all-in-fiber capacitors with poly(vinylidene fluoride) (PVDF) as the dielectric material. Electrodes made of conductive polymer are separated by a PVDF thin film within a polycarbonate casing ...

  10. Fiber optic diagnostic techniques for the electrical discharge machining process 

    E-Print Network [OSTI]

    Pillans, Brandon William

    1998-01-01

    Plasma sparks from an electrical discharge machining phics. (EDM) process were observed using fiber optics positioned the dielectric oil. New measurement techniques were developed to observe the spark in the extremely noisy environment. Optical data...

  11. On healable polymers and fiber-reinforced composites

    E-Print Network [OSTI]

    Nielsen, Christian Eric

    2012-01-01

    124 Figure 8.3 A PTFE mold designed to apply pressure toA polytetrafluoroethylene (PTFE) mold was designed to allowTo minimize fiber Figure 8.3 A PTFE mold designed to apply

  12. Low Cost Carbon Fiber Research in the ALM Materials Program ...

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

    ALM Materials Program Low Cost Carbon Fiber Research in the ALM Materials Program Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February...

  13. Demonstrating Innovative Low-Cost Carbon Fiber for Energy and...

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

    Demonstrating Innovative Low-Cost Carbon Fiber for Energy and National Security Applications Front-end creel for processing precursor in tow format In-line melt spinning for...

  14. Fatigue Enhancement of a Carbon Fiber Reinforced Nanocomposite 

    E-Print Network [OSTI]

    Wilkerson, Justin W.

    2008-08-19

    The primary objective of the present investigation is to study the fatigue characteristics of a woven carbon fiber reinforced polymer which has been modified with either amine or fluorine functionalized carbon nanotubes ...

  15. Fiber optic signal amplifier using thermoelectric power generation

    DOE Patents [OSTI]

    Hart, M.M.

    1995-04-18

    A remote fiber optic signal amplifier for use as a repeater/amplifier, such as in transoceanic communications, powered by a Pu{sub 238} or Sr{sub 90} thermoelectric generator. The amplifier comprises a unit with connections on the receiving and sending sides of the communications system, and an erbium-doped fiber amplifier connecting each sending fiber to each receiving fiber. The thermoelectric generator, preferably a Pu{sub 238} or Sr{sub 90} thermoelectric generator delivers power to the amplifiers through a regulator. The heat exchange surfaces of the thermoelectric generator are made of materials resistant to corrosion and biological growth and are directly exposed to the outside, such as the ocean water in transoceanic communications. 2 figs.

  16. Fiber optic signal amplifier using thermoelectric power generation

    DOE Patents [OSTI]

    Hart, Mark M. (Aiken, SC)

    1995-01-01

    A remote fiber optic signal amplifier for use as a repeater/amplifier, such as in transoceanic communications, powered by a Pu.sub.238 or Sr.sub.90 thermoelectric generator. The amplifier comprises a unit with connections on the receiving and sending sides of the communications system, and an erbium-doped fiber amplifier connecting each sending fiber to each receiving fiber. The thermoelectric generator, preferably a Pu.sub.238 or Sr.sub.90 thermoelectric generator delivers power to the amplifiers through a regulator. The heat exchange surfaces of the thermoelectric generator are made of materials resistant to corrosion and biological growth and are directly exposed to the outside, such as the ocean water in transoceanic communications.

  17. SPECTRALLY EFFICIENT MULTICARRIER SYSTEMS FOR FIBER-OPTIC TRANSMISSION

    E-Print Network [OSTI]

    Zhang, Yuanyuan

    2012-05-31

    The purpose of this research is to provide a comprehensive study of spectrally efficient multicarrier systems for fiber-optic transmission. Multicarrier optical systems partition a high-data rate digital signal in a wavelength channel into multiple...

  18. Optical fiber based ultrashort pulse multispectral nonlinear optical microscopy 

    E-Print Network [OSTI]

    Larson, Adam Michael

    2009-05-15

    Nonlinear optical microscopy (NLOM) utilizing femtosecond laser pulses is well suited for imaging living tissues. This work reports on the design and development of an optical fiber based multispectral NLOM developed around ...

  19. Specialty Fibers for Terahertz Generation and Transmission: A Review

    E-Print Network [OSTI]

    Barh, Ajanta; Agrawal, G P; Varshney, R K; Rahman, B M A

    2015-01-01

    Terahertz (THz) frequency range, lying between the optical and microwave range covers a significant portion of the electro-magnetic spectrum. Though its initial usage started in the 1960s, active research in the THz field started only in the 1990s by researchers from both optics and microwaves disciplines. The use of optical fibers for THz application has attracted considerable attention in recent years. In this article, we review the progress and current status of optical fiber-based techniques for THz generation and transmission. The first part of this review focuses on THz sources. After a review on various types of THz sources, we discuss how specialty optical fibers can be used for THz generation. The second part of this review focuses on the guided wave propagation of THz waves for their transmission. After discussing various wave guiding schemes, we consider new fiber designs for THz transmission.

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

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

    from a melt-spun process and will continue to develop and optimize the process. Further optimization of these processes has the potential to result in carbon fibers with...