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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 2 (1931), S. 245-260 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 7 (1936), S. 261-263 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 4 (1933), S. 280-300 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 1 (1930), S. 181-196 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung Das Gesamtresultat der vorhergehenden Ausführungen berechtigt meines Erachtens zur Annahme folgender Arbeitshypothese: Der Kern der ganzen Biochemie, sei es nun Atmung, Gärung oder Synthese, läßt sich zurückführen auf eine Kette von “freiwillig vor sich gehende” katalytischen Oxydoreduktionsvorgängen, welche sich ohne Ausnahme im folgenden Schema zusammenfassen lassen: $$\begin{gathered} I.{\text{ A H }} + {\text{ B}} \to {\text{A }} + {\text{ B H}} \hfill \\ {\text{ II}}{\text{. A H }}{\text{. B}} \to {\text{A }}{\text{. B H}} \hfill \\ {\text{III}}{\text{. A H }}{\text{. B}} \to {\text{A }} + {\text{ B H}} \hfill \\ {\text{IV}}{\text{. A H }} + {\text{ B}} \to {\text{A }}{\text{. B H}} \hfill \\ \end{gathered} $$ Die Erfahrung der letzten Jahre hat mich gelehrt, daß diese Arbeitshypothese in hohem Maße dazu beiträgt, die Ergründung der von den Mikroorganismen herbeigeführten chemischen Umwandlungen zu ermöglichen; und diese Überzeugung ist es auch, welche mich dazu führte, diese Anschauungen der Aufmerksamkeit der nicht nur praktisch orientierten mikrobiologischen Forscher zu unterbreiten.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 5 (1936), S. 539-560 
    ISSN: 0066-4154
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Biology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 14 (1926), S. 882-883 
    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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  • 7
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 16 (1950), S. 299-310 
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A brief discussion has been given of various devices available for the determination of micro-organisms in air. In order to investigate the efficiency of some of these devices it proved desirable to work with artificially contaminated air. Hereto clouds of spores ofBacillus cereus were produced with the aid of a modified model of aDe Vilbiss 40 nebulizer. Comparative tests were made with theFolin-bubbler, theWheeler-bubbler, theMoulton-atomizer and the capillary impinger as used byRosebury for the determination of the spore concentration in the contaminated air. The latter device proved to be by far the most efficient, 99% or more of the spores being retained by this simple apparatus.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 16 (1950), S. 311-324 
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. A method has been developed for testing the filtration efficiency of some filter materials. For each of the materials investigated — cotton wool, stillite and carbon — a suitable filter has been devised. 2. The filtered air was analyzed as to its germ content with the aid of a set of 3 capillary impingers. 3. The cotton wool filter gave on the whole satisfactory results provided that due attention was given to the packing of the filter and its sterilisation. Clear indications were obtained that the degree of the contamination of the air was of vital importance. 4. The stillite filter proved to have the advantage of combining a high filtration efficiency with a low resistance to the passing air. Also for the stillite filter a critical degree of contamination of the air was established; on surpassing this degree the filtration effect was endangered. 5. The carbon filter proved to be most efficient, but had a relatively low specific filtering capacity. It was found that the filtration result was depending on the height of the carbon column and on the velocity and the degree of contamination of the air. 6. It should be stressed that in all experiments artificially contaminated air was used, and that the number of germs present in the air to be filtered was in all cases many times larger than that usually occurring in normal air.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 17 (1951), S. 315-324 
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary With the aid of the replacement culture technique it was found that a strain ofAspergillus niger was able to produce homogentisic acid out of phenylacetic acid with a yield upto 15.7 % of the theoretical amount. Evidence is in favour of the view that homogentisic acid is a normal intermediate in the oxidation of the said substrate.
    Type of Medium: Electronic Resource
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