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  • 1985-1989  (2)
  • 1970-1974  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A new genetic model for the North African metasomatic siderite deposits (1986)
    Springer
    Mineralium deposita 21 (1986), S. 228-233 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Résumé Basée sur les notes publiées sur l'évolution diagénétique des diapirs évaporitiques, et sur les données géologiques et les résultats préliminaires concernant la géochimie et les inclusions fluides, un nouveau modèle génétique est présenté pour les minerais sidéritiques métasomatiques du Maghreb. Dans l'ensemble, des saumures chaudes, issues des évaporites enfouies, et/ou des eaux derivées du gypse et d'autres sediments, semblent avoir réagi avec leurs roches hôtes durant la diagenèse précoce, devenant ainsi acides et réductrices. Ceci entraine la mise en solution et le transport du fer et d'autres cations. Ces saumures sont canalisées vers les parties apicales des diapirs, où elles déposent leurs solutés par processus métasomatiques dans les fractures du toit carbonaté. D'autres modes de dépôt, aussi bien par chute de température et de pression que par mélange avec les eaux de subsurface, sont marqués par des filons occasionels minéralisés en fer et très rarement en barytine et fluorine. Le modèle est tout à fait comparable à ce publié récemment sur l'origine des minéralisations à Pb-Zn de la même région. Il est évident que les deux groupes de minéralisation partagent des caractéristiques métallogéniques non seulement spatiotemporelles mais aussi causales.
    Notes: Abstract Based on published accounts of the diagenetic evolution of evaporite diapirs and geological, preliminary geochemical, and fluid inclusion data a new genetic model is presented for the North African metasomatic siderite deposits. Essentially, hot brines from the buried evaporites, gypsum-derived and/or other formation waters are thought to have reacted with their host rocks during early diagenesis becoming acid and reducing, thus allowing solution and transport of Fe and other cations. They were channeled toward the apical parts of diapirs where they deposited their solute by metasomatic processes in fractured roof carbonates. Other depositional modes by pressure and temperature drop as well as by mixing with near-surface waters are indicated by the occasional vein-type iron ores and very minor barite and fluorite. The model is quite comparable to recently published thoughts on the origin of the Pb-Zn deposits of the same area. Obviously, both groups of deposits share not only temporal and spatial but also causal metallogenic characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00199805
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Influenza specific antibodies in the female genital tract of mice after oral administration of live influenza vaccine (1987)
    Springer
    Archives of gynecology and obstetrics 240 (1987), S. 153-157 
    Details
    ISSN: 1432-0711
    Keywords: Urogenital tract ; Immunization ; Secretory antibodies ; Influenza vaccine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to investigate the possible stimulation of antibodies in the genital tract by immunization female NMRI-mice were given orally a live influenca vaccine (A/PR/8/34, HlNl) on two occasions which were 10 days apart. Subsequently, virus specific IgA antibodies measured by an enzyme immunoassay in homogenates of urinary bladder, uterus and vagina and also in uterine washings. Specific IgA antibodies were not detectable in the sera of immunized mice. The high IgA titer in uterine washings, and in the homogenates suggests enhancement by vaccine of IgA antibody production in the genital tract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00207710
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Untersuchungen zur armverhältnisbestimmung am spätreplizierenden X-Chromosom des Menschen (1971)
    Springer
    Human genetics 〈Berlin〉 12 (1971), S. 302-315 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Das Armverhältnis des spätreplizierenden X-Chromosoms wurde bei 5 Kontrollpersonen, 5 47,XXY Klinefelter-Patienten, 1 46/47,XX/XXX-Mosaik und 1 45/46,X/XX-Mosaik bestimmt. Die statistische Analyse der erhaltenen Werte zeigt, daß die Methode der Armverhältnisbestimmung durch Messung der Armlängen an vergrößert projizierten Chromosomen als geeignet erscheint. Die Mittelwerte der Armverhältnisse der 5 Kontroll-personen können nicht als gleich angesehen werden. Der gesamte Mittelwert der Armverhältnisse ist signifikant kleiner (1,487) für die Klinefelter-Patienten als für die Kontrollpersonen (1,546). Die Werte für die Mosaike XX/XXX (1,557) und XO/XX (1,528) liegen im Bereich der Normalwerte.
    Notes: Summary The arm ratio of the late replicating X-chromosome was determined in 5 control persons, 5 47,XXY Klinefelter patients, 1 46/47,XX/XXX mosaic and 1 45/46,X/XX mosaic. The analysis of the values obtained shows that the method of defining the arm ratio by means of measuring arm lengths on drawings of highly magnified projected chromosomes proves practicable. The mean values of the arm ratios of the 5 control persons cannot be valued as equal. The total mean value of the arm ratios is significantly smaller (1.487) for the Klinefelter patients than for the normal control persons (1.546). The values of the mosaics XX/XXX (1.557) and XO/XX (1.528) lie in the range of the control values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278050
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Die Hellphase des Elektrooculogramms bei unterschiedlichen Beleuchtungsstärken (1971)
    Springer
    Graefe's archive for clinical and experimental ophthalmology 182 (1971), S. 357-362 
    Details
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Von 80 gesunden Versuchspersonen 200 EOG abgeleitet. Es sollte der Einfluß unterschiedlicher Netzhautbeleuchtungsstärke im Bereich von 10 000–70 000 td auf das EOG untersucht werden. Die Versuchsergebnisse zeigen, daß Netzhautbeleuchtungsstärken dieser Größenordnung (über 10 000 td) zu keiner weiteren Beeinflussung des EOG führen.
    Notes: Summary 80 normal persons were studied in order to access possible interrelationships between the EOG- and the retinal illumination of 10 000–70 000 td. The results of these experiments clearly indicated that the EOG is not affected by these different levels of retinal illumination. Increasing illumination beyond 10 000 td causes no further increase of the potentials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00411968
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    Paper (German National Licenses)
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