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  • 2000-2004  (72)
  • 1995-1999  (79)
  • 1975-1979  (89)
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  • 1
    Electronic Resource
    Electronic Resource
    A simple, inexpensive, hyperthermal atomic oxygen sensor (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 3557-3562 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: With the increasing duration of space flights, the development of a permanent facility in space, and the increasing use of ground-based hyperthermal atomic oxygen sources there is a need for a simple instrument to provide long-term monitoring of the beam flux. Such an instrument can also be used as a diagnostic tool to investigate the material degradation process. Reliance on models of the upper atmosphere to determine the fluence of atomic oxygen is not only necessarily complex but also imprecise due to the strong dependence of oxygen concentration on day/night, latitude, and solar activity. Mass spectroscopy, the traditional method for determining the gas phase species densities at low pressure, is not only expensive but is limited in the area that it can monitor as well as subject to effects of material degradation. Our group has developed a simple and inexpensive dosimeter to measure the atomic oxygen fluence via the change in resistance as the sensor element is gradually oxidized. The sensors consist of thin-film circuit elements of selected material deposited on a suitable substrate. Four-point resistance measurements are used to monitor the change in sensor resistance with respect to time. Results obtained from silver and carbon dosimeters flown on STS-46 (CONCAP-II-01) indicate that such sensors are sensitive enough to monitor the diurnal variations in atomic oxygen distribution and sufficiently durable to last the lifetime of a mission. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148322
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  • 2
    Electronic Resource
    Electronic Resource
    Instrumentation for the Genome Project (1999)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biomedical Engineering 1 (1999), S. 649-678 
    Details
    ISSN: 1523-9829
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Technology , Medicine
    Notes: Abstract Much of the recent rapid progress in large-scale genomic sequencing has been driven by the dramatic improvements both in the area of biological protocols and in the availability of improved laboratory instrumentation and automation platforms. We discuss recent developments in the area of bioinstrumentation that are contributing to the current revolution in genetic analysis. Examples of systems for laboratory automation are described together with specific single-purpose instruments. Emphasis is placed on those tools that are contributing significantly to the scale-up of genomic mapping and sequencing efforts. In addition, we present a selection of more advanced measurement techniques and instrumentation developments that are likely to contribute significantly to future advances in sequencing and genome analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bioeng.1.1.649
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  • 3
    Electronic Resource
    Electronic Resource
    Hopes and Realities for the (p,pi) Reaction (1979)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 29 (1979), S. 121-160 
    Details
    ISSN: 0163-8998
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ns.29.120179.001005
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  • 4
    Electronic Resource
    Electronic Resource
    Capacitance Transient Spectroscopy (1977)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 7 (1977), S. 377-448 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.07.080177.002113
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  • 5
    Electronic Resource
    Electronic Resource
    Molecular beam chemistry: reactions of cesium(1+) ion with chlorobenzene and the electronic state of the phenyl cation (1976)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 98 (1976), S. 8274-8276 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00441a072
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  • 6
    Electronic Resource
    Electronic Resource
    Phase dynamics of Kármán vortices in cylinder wakes (1996)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 8 (1996), S. 91-96 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temporal evolution of Kármán vortex shedding patterns in the wake of a cylinder placed at right angles to a uniform flow is studied for Reynolds numbers (based on cylinder diameter) between 80 and 140. Focusing on the dynamics of the vortex shedding phase in the wake planview (the plane spanned by the free-stream direction and the cylinder axis) we study experimentally and model the response of shedding patterns to time-dependent boundary conditions imposed at the cylinder ends. By appropriate impulsive changes of end conditions, spanwise wave number "shocks'' can be produced that travel along the cylinder span. These shock experiments, together with data from steady oblique shedding patterns, are used to determine the parameters for the spanwise Ginzburg–Landau model, which has already been used successfully to describe many of the phenomena observed in cylinder wakes. We then demonstrate experimentally that, in analogy to gasdynamics, it is also possible to produce "expansion waves'' of the spanwise wave number, which are well described by the Ginzburg–Landau model without further adjustment of its parameters. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.868817
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  • 7
    Electronic Resource
    Electronic Resource
    Cold Storage as a Quarantine Treatment to Prevent the Introduction of Spodoptem littoralis (Boisd.) into Glasshouses in the U.K. (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 25 (1976), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In laboratory tests, eggs and young larvae of Spodoptera littoralis were exposed to cold treatments of varying temperature and duration in an attempt to find an alternative to the current quarantine treatment of 10 days’ storage at 1–2°C, which damages some imported chrysanthemum cuttings. The alternative cold regimes tested, i.e., 1°C for four to eight days, is for seven days, 4°C for four to six, eight and ten days, and 7°C for seven days, did not eradicate S. littoralis. Differences in response to cold were observed both between strains and within developmental stages of S. littoralis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1976.tb01957.x
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  • 8
    Electronic Resource
    Electronic Resource
    PORPHYRINS IN MUSCLE AND RED BONE MARROW OF BEEF (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A method for the determination of total porphyrins in beef biceps femoris and semitendinosus muscles, in beef red bone marrow and in lamb biceps femoris and semitendinosus muscles is reported. Tissues of decreasing levels of porphyrins were: red marrow, beef biceps femoris, beef semitendinosus, lamb biceps femoris, lamb semitendinosus. Protoporphyrin was the major, if not only, porphyrin present in the muscle and marrow samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1978.tb02373.x
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  • 9
    Electronic Resource
    Electronic Resource
    A Bioctahedral NbIV Cluster with Bridging Sulfides: [Nb2(μ-S)2Cl4(thf)4] (1997)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 1041-1043 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270197004277
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  • 10
    Electronic Resource
    Electronic Resource
    Hexamolybdenum Octatelluride, Mo6Te8 (1998)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 54 (1998), S. 709-710 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270197017812
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