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  • 1995-1999  (4)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 2747-2756 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A capacitive-discharge spot welder is described which is primarily intended for making electrical connections between small (〈25–150 μm diameter) wires and samples of metallic materials, although it can be used in many applications where miniature welds must be made. It has been particularly useful in allowing low resistance (several mΩ) contacts to be created on samples of rare earth and actinide intermetallic compounds which are highly resistant to soldering. The device has a minimum time constant of about 25 μs and can deliver a maximum of between 700 μJ and 400 mJ of energy to the weld region, depending on the resistance of the latter. A suitable electrode holder is also described, and considerations for choosing the electrode materials, selecting the contact wires, preparing the sample, and creating a weld are discussed. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 132 (1995), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Human piebaldism is a rare autosomaal dominant disorder characterized by congenital depigmented patches of skin and hair. Piebaldism results from mutations of the kit proto-oncogene, which encodes a cell-surface receptor, tyrosine kinase, whose ligand is the stem/mast cell growth factor. We report four unrelated patients with piebaldism and consider the variations in phenotype in relation to the site of the kit gene mutation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1612-1112
    Keywords: Gas chromatography-IR spectroscopy ; Propanediol ; Acyclovir
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A simple procedure is described for the determination of the 1,2-propanediol (propylene glycol) content of cream formulations containing the antiviral drug Acyclovir. Analysis of a solvent extract by gas chromatography coupled to an infra-red spectrometer enables the target analyte to be positively identified and an estimate of its concentration to be made. This application utilises the newer Tracer cryogenic deposition interface for gas chromatography and infra-red spectroscopy. This offers an alternative and complementary analytical strategy to gas chromatography coupled to mass spectrometry.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 16 (1997), S. 1437-1440 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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