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  • 1995-1999  (719)
  • 1965-1969  (290)
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  • 1
    Call number: 8/M 00.0036
    In: NATO ASI series
    Type of Medium: Monograph available for loan
    Pages: xviii, 255 S.
    ISBN: 0792355873
    Series Statement: NATO ASI series : Partnership sub-series 2, Environmental security 52
    Classification:
    B.3.1.
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Stuttgart : Enke
    Call number: AWI G1-97-0183
    Description / Table of Contents: Ein Buch über Methoden der Sedimentologie in deutscher Sprache hat lange gefehlt. Eine Reihe von Fachleuten geben eine Einführung in die verschiedensten Techniken zur Untersuchung von Sedimentgesteinen, von der Geländearbeit über die Korngrößenanalyse, die Licht- und Elektronenmikroskopie und die Kathodolumineszenz bis zur geochemischen Analyse. Jede Methode wird beschrieben und hinsichtlich ihrer Grenzen diskutiert. Anhand von Beispielen aus der Literatur werden die Anwendungsmöglichkeiten deutlich gemacht.
    Type of Medium: Monograph available for loan
    Pages: IX, 366 S. : zahlr. Ill. und graph. Darst.
    ISBN: 343226691X
    Uniform Title: Techniques in sedimentology
    Language: German
    Branch Library: AWI Library
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  • 3
    Publication Date: 2019-07-17
    Description: Heavy metal fluoride glass fibers show promise in applications such as surgical lasers, spectroscopy and imaging fiber bundles. ZBLAN, which is within this class has been studied for a number of years. ZBLAN's theoretical attenuation coefficient is approximately 0.002 dB/km which is much better than that of fused silica at 0.2 dB/km. However, due to impurities and crystallites the attenuation coefficients achieved to date are considerably larger than those of fused silica. Impurities can be controlled with better processing techniques. Crystallization has been found to be a function of gravity. It is found that heating to the crystallization temperature in unit gravity results in crystallization while heating in reduced gravity does not. The exact mechanism for this phenomenon is not known but is speculated to be related to stress.
    Keywords: Nonmetallic Materials
    Type: Non-Oxide Glasses; Apr 10, 2000 - Apr 11, 2000; Florianopolis; Brazil
    Format: text
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 73 (1969), S. 3820-3829 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 31 (1966), S. 2658-2661 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 752-758 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Multiple energy N (at 500 °C) and Al (at 800 °C) ion implantations were performed into bulk semi-insulating 4H–SiC at various doses to obtain uniform implant concentrations in the range 1×1018–1×1020 cm−3 to a depth of 1.0 μm. Implant anneals were performed at 1400, 1500, and 1600 °C for 15 min. For both N and Al implants, the carrier concentration measured at room temperature for implant concentrations ≤1019 cm−3 is limited by carrier ionization energies, whereas for the 1020 cm−3 implant, the carrier concentration is also limited by factors such as the solubility limit of the implanted nitrogen and residual implant damage. Lattice quality of the as-implanted and annealed material was evaluated by Rutherford backscattering spectroscopy measurements. Residual lattice damage was observed in the implanted material even after high temperature annealing. Atomic force microscopy revealed increasing deterioration in surface morphology (due to the evaporation of Si containing species) with increasing annealing temperature. The surface damage is in the form of long furrows running in one direction across the wafer to a depth of ∼25 nm from the surface for samples annealed at 1600 °C for 15 min. We measured room temperature sheet resistivities of ∼70 and 1.2×104 Ω/sq., respectively, for 2×1019 cm−3 N (1500 °C annealing) and 1×1020 cm−3 Al (1600 °C annealing) implanted samples. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 4394-4397 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This computer-controlled instrument has a battery life in excess of 16 h and fits on a circuit board that is 11.9 mm wide and 27.8 mm long. A programmable microcontroller digitizes the output of a single-axis accelerometer and stores up to 4096 acceleration values in memory. A personal computer can connect to the instrument and retrieve the data through a parallel port. The instrument can be calibrated on a small centrifuge, and the data have a linear relation to acceleration between 1 and 22 g (expandable to 50 g) with a resolution of 0.3 g. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 3242-3244 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A simple, automated, fine-control, inexpensive, mechanical apparatus for coring thin samples is described. The apparatus consists of a motor-driven wheel attached to the feed handle of a microdrill press through an adjustable linkage that produces a peck drilling action. Using a Pb–Sn solder-tipped Cu or stainless steel core drill as a lapidary tool, cylindrical samples of ceramics, metals, and minerals with densities in the range 2.3–12.4 g/cm3 and as small as 250 μm in diam and 1.0 mm in length have been cored. Textures on the cored surface depend on sample type, grit size, core drill speed, etc., but surface height variations of 0.05–0.4 μm have been achieved with coring times in the range 1–6 h. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 4005-4007 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A system for grabbing integrated video frames produced by a remote camera is described. As part of the pointed platform in a balloon-borne experiment, we use a video charge-coupled-device camera to obtain wide field star images. To obtain images with a sufficient signal-to-noise ratio, integration times of up to 1 s are required. In applications where the frame grabber and camera are physically close to each other, timing the frame grabber trigger is straightforward; however, there are several advantages to locating the frame grabber not on the balloon payload. As a result commands issued simultaneously to the frame grabber on the ground and the camera on the balloon can be delayed relative to each other, resulting in failure to acquire an image. We have developed a system where, at the end of an integration, a tone is injected into the video field preceding the transmission of the integrated frame; the tone is used on the ground by a decoder circuit to control the frame grabber acquisition of the integrated frame. The system has operated successfully in the flight of a stratospheric balloon-borne telescope. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 15 (1967), S. 1005-1008 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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