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  • 1950-1954  (25)
  • 1954  (13)
  • 1950  (12)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 1197-1198 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This evidence is most clearly seen in the Swartkrans skull SKA9, the occipital region of which has now been prepared in acetic acid. The skull has been sheared considerably, but the region from slightly posterior to the glabella to approximately the position of the bregma, as well as a good deal of ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 262-263 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recently published essay1, Prof. S. Zuckerman has discussed at some length the evolutionary position of the australopithecines under the three headings of evidence relating to: (1) the brain, (2) the face and teeth, and (3) upright posture. The first two sections are dismissed after very brief ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 730-731 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Thus, an isotonic solution corresponding to the "Medium A.2" (rf. 3) was prepared by mixing 0*154 M sodium nitrate, 232 ml., 0-154 M potassium nitrate, 8 ml., 0-11 M calcium nitrate, 3 ml., and 0-1542" magnesium sulphate, 2 ml., and adding 24 ml. of phosphate buffer prepared by bringing M/15 ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 989-990 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] No. of expts. Respiratiμ*l./mgm./hr.) on ± S.D. Total wa % tissue ter ±S.D. Normal medium + Af/200 cyanide + 10-M 2,4-dini-trophenol 44813 4.20.44.6 0.40.150.5 77.584.282.6 0.80.91.0 In recent experiments, 10-4 M 2,4-dinitrophenol was added to the isotonic medium in ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 843-844 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN 1925, Prof. Dart announced the discovery of a new type of higher primate that seemed to be somewhat intermediate between ape and man. This was the skull of the Taungs child which he called Australopithecus africanus. For some years there was considerable dispute between those of us who regarded ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 453-454 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Three such reactions are (I) the nuclear chlorination of phenolic ethers1, (II) the benzoylation of anilines2, and (HI) the alkaline hydrolysis of ethyl benzoates8. Hitherto, in both the benzoylation of anilines and the hydrolysis of ethyl benzoates, investigations have been confined to the study ...
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 46 (1954), S. 2539-2540 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 8
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 46 (1954), S. 49-49 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 42 (1954), S. 49-52 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Kalium kann in Mengen von 0,1 bis 2,0 mg durch Fällung als 12-Phosphomolybdat bestimmt werden. Die Abscheidung so geringer Mengen wird durch Abdampfen des überschüssigen Reagens bis zur beginnenden Kristallisation begünstigt. Nach Filtration des Niederschlages wird dieser alkalimetrisch bestimmt. Diese Art der Durchführung kann auch bei größeren Kaliummengen angewendet werden und verkürzt das kürzlich beschriebene Verfahren der Verfasser. Die Methode erwies sich als geeignet für die Kaliumbestimmung in Blutserum.
    Abstract: Résumé On peut doser le potassium dans le domaine 0,1–2,0 mg par précipitation du duodéciphosphomolybdate. La précipitation de si petites quantités est déclanchée par évaporation de l'excès de réactif jusqu' à ce que la cristallisation commence. Après filtration, on dose le précipité par acidimétrie. Cette modification peut aussi s'appliquer à de plus grandes quantités de potassium et elle abrège la méthode précédemment décrite. La méthode paraît s'appliquer au dosage du potassium dans le sérum sanguin.
    Notes: Summary Potassium can be determined in the range 0.1–2.0 mg by precipitation as the 12-phosphomolybdate. The precipitation of these small amounts is promoted by evaporating the excess reagent until crystallisation begins. After filtration the precipitate is determined alkalimetrically. This modification can also be applied to larger amounts of potassium and shortens the method described previously. The method appears to be suitable for the determination of potassium in blood serum.
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  • 10
    Publication Date: 1954-01-15
    Print ISSN: 0031-899X
    Electronic ISSN: 1536-6065
    Topics: Physics
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