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  • 1
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 33 (2000), S. 184-189 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: MarqX is a computer program for the modelling of powder diffraction data. It can be used for an unconstrained profile fitting (pattern decomposition, PD) or constrained modelling of the whole powder pattern (Pawley method, PM), for single- as well as multiple-phase samples. The program output includes: lattice parameters or peak positions (for PM and PD, respectively), width and shape of the diffraction peak (in terms of half width at half-maximum and mixing parameter of a pseudo-Voigt function), corrected for the instrumental broadening component, intensity, peak area and profile asymmetry. In addition, errors on the goniometer zero and shift in sample position with respect to the goniometric axis can also be modelled, together with distance and relative intensity of the spectral components of the X-ray beam (e.g. Kα1 and Kα2). Specific output files are provided for line-profile analysis, including the Williamson–Hall plot and Warren–Averbach method.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2145
    Keywords: Key words Chitinase ; Defence ; Differential hybridization ; Fruit development ; Gibberellin ; Histone H2B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A set of fifteen cDNA clones from apple (Malus domestica Borkh) corresponding to fruit genes induced or enhanced by pollination have been identified by differential hybridization. Expression of corresponding mRNAs was induced in apple flowers by pollination, and in six clones mRNA levels also showed induction by gibberellin treatment of flowers. Sequence analysis and database searches showed that these cDNAs correspond to genes involved in defence responses, transport, protein and flavonoid synthesis, as well as cell division. One of the pollination-enhanced cDNAs was found to be similar to plant and animal genes encoding histone H2B. This mRNA was very highly expressed in flower buds and in fruit at early stages of development, but transcript levels were relatively low in young leaves and shoot tips. RNA in situ hybridization showed histone H2B mRNA detectable at high levels in the nucellus tissue of ovules in unopened flower buds. Five days after pollination, transcript levels decreased in the nucellus; however, weak signals were observed in the fleshy cortex tissue.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 16 (1997), S. 1205-1207 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Abstracts are not published in this journal
    Type of Medium: Electronic Resource
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