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  • 2010-2014
  • 1985-1989  (26)
  • 1935-1939  (4)
  • 1989  (26)
  • 1939  (4)
  • 1
    Series available for loan
    Series available for loan
    Würzburg : Freunde der Würzburger Geowiss.
    Associated volumes
    Call number: SR 93.0596(1)
    In: Beringeria
    Type of Medium: Series available for loan
    Pages: 143 S.
    Series Statement: Beringeria 1
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 6296-6303 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 469-471 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to characterize the laser ablation process as it relates to the deposition of high Tc superconducting thin films, optical emission spectra produced during ArF excimer laser ablation of the high Tc superconductor YBa2Cu3O7 were studied. The population of excited states within the gas phase blow-off material depends strongly on excimer laser fluence at 193 nm. Ablation using relatively low excimer laser fluences produces a significant fraction of YO in the gas phase. The plasmas derived from ablation of targets made from the high Tc material are similar to plasmas observed from ablation of the individual components BaCO3, CuO, and Y2O3.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Geometriae dedicata 29 (1989), S. 335-375 
    ISSN: 1572-9168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 27 (1939), S. 429-433 
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 27 (1939), S. 443-444 
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 27 (1939), S. 735-738 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In this study, the antigenic mosaic of the vesicular fluid (VF) and hydrosoluble cyst-wall extract (CWE) ofT. crassiceps (Tc; harvested from mice) andT. saginata (Ts) metacestodes was analyzed by combined precipitation maps developed in single and bidimensional immunoelectrophorsis against the respective rabbit antiserum. Hostserum proteins demonstrated by immunodiffusion within TcVF (albumin, transferrin, IgG, and another five noncharacterized proteins), TcCWE (albumin, IgG, and six additional unknown proteins), TsVF (albumin) and TsCWE (albumin and IgG) were removed by immunoaffinity chromatography prior to immunoelectrophoretic analysis. Neither TcVF nor TcCWE contained demonstrable amounts of mouse IgM and IgA. In TcVF a total of 18 and in TcCWE a total of 36 parasitic antigens were recognized by the corresponding antiserum. In the case of TsVF and TsCWE, antiserum to the crude extract ofT. saginata larvae developed a total of 26 and 30 precipitates, respectively. Examination of the precipitation maps developed by the respective heterologous antiserum (vice-versa testing) showed that both TcVF and TsVF contained ten antigens sharing identity. For TcCWE and TsCWE, nearly the same number of shared antigens (20 and 18, respectively) could be demonstrated. For screening of IgG antibodies againstT. saginata metacestodes from heavily and moderately infected calves (n=6) by ELISA, VF and CWE antigens of bothTaenia species were found to be potent reagents; TsVF was the most sensitive antigen.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0170-2041
    Keywords: Resolution, kinetic ; Chiral tertiary amines ; Chiral esters ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Kinetic Resolutions Starting with rac-Alcohols or rac-Acyl Halides Using Optically Active Inductor BasesIn the reaction of one mole equivalent of achiral acyl halides with two equivalents of rac-alcohols in the presence of one equivalent of an optically active inductor base (tertiary amine) partially optically active esters and partially optically active alcohols are formed, having in some cases high optical purity (60 - 70%). The alcohol moiety of the ester and the unchanged alcohol are of opposite configuration. Treatment of two equivalents of rac-acylhalides with one equivalent of an achiral alcohol and an inductor base also leads to a high degree of optical induction. The carbonic acid moiety in the ester and the unchanged acid are of opposite configuration. The optical induction is influenced a) by the ligands linked to the reaction centers, b) by the relative quantities of the reacting partners, c) by the solvent, and d) by the temperature.
    Notes: Bei der Umsetzung eines Moläquivalents achiraler Carbonsäurehalogenide mit zwei Moläquivalenten rac-Alkoholen entstehen unter Mitwirkung von einem Moläquivalent einer optisch aktiven Induktorbase (tertiäres Amin) partiell optisch aktive Ester sowie partiell optisch aktive Alkohole in zum Teil hoher optischer Reinheit (60 - 70%). Der im Ester gebundene Anteil an Alkohol sowie der nicht umgesetzte Alkohol haben entgegengesetzte Konfiguration. Der Induktionsgrad ist ähnlich hoch, wenn man zwei Moläquivalente eines rac-Carbonsäurehalogenids mit je einem Moläquivalent eines achiralen Alkohols und einer Induktorbase umsetzt. Der Carbonsäureanteil im Ester und die freie Säure haben entgegengesetzte Konfiguration. Die optischen Induktionen werden beeinflußt a) durch die Art der mit den Reaktionszentren verknüpften Liganden, b) durch die relativen Mengen der Reaktionspartner, c) durch das Lösungsmittel und d) durch die Temperatur.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0192-253X
    Keywords: Transposable element ; Transcription factor ; Suppression ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We have used the yellow gene of Drosophila melanogaster as a model system in which to study the molecular mechanisms by which the gypsy retrotransposon causes mutant phenotypes that can be reversed by nonalleiic mutations at the suppressor of Hairy-wing locus. This gene encodes a 109,000 dalton protein that contains an acidic domain and 12 copies of the Zn finger motif, which are characteristic of some transcription factors and DNA binding proteins. The suppressible y2 allele is caused by the insertion of the gypsy element at -700 bp from the start of transcription of the Yellow gene, resulting in a phenotype characterized by mouth parts and denticle belts in the larvae, and by bristles in the adults, that show wildtype coloration, but mutant wings and body cuticle in the adult flies. This phenotype is the result of the interaction of gypsy sequences homologous to mammalian enhancers with tissue-specific yellow transcriptional regulatory elements located upstream from the gypsy insertion site and responsible for the expression of the yellow gene in the mutated tissues. This interaction is dependent on the binding of the su(Hw) protein to the specific gypsy sequences involved in the induction of the mutant phenotype.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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