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  • Springer  (211)
  • Wiley-Blackwell  (36)
  • Nature Publishing Group  (10)
  • American Geophysical Union (AGU)
  • American Physical Society (APS)
  • Oxford University Press
  • 1955-1959  (258)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 31 (1958), S. 179-190 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung Es wird über Versuche berichtet, in denen Sporen von Oospora lactis einzeln mit ultraviolettem Licht von der Wellenlänge 257 mμ bestrahlt und auch einzeln in ihrem weiteren Schicksal verfolgt wurden. Die Dosis wurde so gewählt, daß etwa die Hälfte der 90–100 bestrahlten Individuen überlebte, die andere Hälfte letal geschädigt wurde. Ein kleiner Anteil der so bestrahlten Individuen zeigte Wachstumsanomalien, die längere Zeit, auch über mehrere Einzell-Subkulturen hinweg, erhalten blieben, aber schließlich auf normale Formen hin regenerierten. Entsprechend den gefundenen Wachstumsanomalien ließen sich cytologische teilweise Veränderungen der Kernsubstanz (Kernpyknose, Kernzerfall), des Protoplasmas (Verfettung, Hydratation) und der Hyphenmembran (Deformationen an den Zellengrenzen und Hyphenenden, Behinderung der Oidienbildung und- abschnürung) nachweisen.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1958-01-01
    Print ISSN: 0003-9276
    Topics: Biology
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1922-1925 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] YAGI, Nagatsu and Ozawa1 reported recently that chlorpromazine (N- [3 '-dimethylaminopropy ] ] -3-chlorophenothiazine) is an inhibitor of d-amino-acid oxidase. They stated that substantial inhibition was achieved with 2 x 10~5 M chlorpromazine in a system consisting of a hog kidney d-amino-acid ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1567-1568 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The procedure is as follows: After conclusion of the electrophoretic experiment, the strips are air-dried and heated at 120 C. for 30 min. They are then dyed for 45 min. in a 0*1 per cent solution of bromophenol blue in 96 per cent ethanol to which 2 per cent glatial acetic acid has been added. ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 717-718 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From April 1958 until March 1959 inclusive, rain water was collected in Yangambi, in standard rain-gauges, and systematically analysed for inorganic nitrogen. During the first four months, analyses were made after each separate downpour, later only once a month, the collected water being kept in ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 810-811 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The presence in the leech of a potent hyaluronidase had been noted previously, including its effect on the physical properties of hyaluronic acid, the production of reducing sugars and its action as a spreading factor3. Paper chromatograms of the products of the 24-hr. digestion of sodium ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 61-61 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. EFFECT OF TEMPERATURE, INOCULATION WITH Rhizobium, AND POTASSIUM NITRATE ON THE YIELD AND PERCENTAGE PROTEIN NITROGEN OF SUBTERRANEAN CLOVER (MEANS OF FOUR REPLICATES) Treatment Yield of dry matter per tube (mgm.) Protein nitrogen in plants (per cent) 20 ° C. 30 ° C. 20 ° ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1800-1801 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Using commercially prepared y-globulin (Lederle C-496) as an antigen, potent antisera were prepared in rabbits. The distribution of y-globulins was studied with the aid of starch-gel immunoelectro-phoresis84. Fig. 1 shows the results obtained when a 2-5 per cent solution of the antigen and of ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 811-811 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Another way of producing zone lenses is based on the birefringent properties of certain crystals, such as basal sections of calcite or sodium nitrate. The crystal is sandwiched between two Polaroid films (G in Fig. 1). A is a monochromatic light source, B is an aspherical collecting lens, D a ...
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Acta biotheoretica 11 (1955), S. 57-74 
    ISSN: 1572-8358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Contenido Se demuestra que — como en laFisica — tambien en la Biologia existen complementarios sistemas de conocimiento. Como onda y corpúsculo dentro de la Fisica, asi son dentro de la Biologia entre otros forma y función, mundo internoy ambientey en primer lugar también herencia y adaptación principios complementarios. Esto será discutido y demonstrado en sus particularidades. Para el conocimiento de la realidad como totalidad sigue de tales consideraciones la conclusión que conocimientos sistematicamente construidos son posibles solo en esferas particulares de la realidad — como p.e. en la mecánica racional, en la electrodinámica, en la anatomia comparada, en la genética etc. —. Lo real en su totalidad posee al contrario ninguna estructura sistemática sino solo un históricadialectica. Metafisicamente hablado significa esto que la esencia de la realidad consiste en una libertad creativa en el sentido deGoethe, pero de ninguna manera en una necesidad absoluta en el sentido deSpinoza.
    Notes: Zusammenfassung Es wird der Nachweis versucht, dass es — ebenso wie in der Physik — auch in der Biologie komplementäre Erkenntnissysteme gibt. Wie Welle und Korpuskel in der Physik, so sind innerhalb der Biologie u.a. Form und Funktion, Innenwelt und Umwelt sowie auch vor allem Vererbung und Anpassung komplementäre Begriffsgefüge. Das wird im einzelnen diskutiert und nachgewiesen. Für die Erkenntnis der Wirklichkeit im Ganzen folgt daraus, dass systematisch aufgebaute Erkenntnisgefüge nur in Teilbereichen des Wirklichen möglich sind — nur in der klassischen Mechanik, der Elektrodynamik, der vergleichenden Anatomie, der Genetik usw. — Das Wirkliche in seiner Gesamthet hingegen besitzt keine systematische sondern nur eine historisch-dialektische Struktur. Metaphysisch bedeutet das, dass das Wesen der Wirklichkeit in schöpferischer Freiheit im Sinne etwaGoethes, aber nicht in sturer Notwendigkeit (dira necessitas im SinneSpinozas) besteht.
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