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  • 1
    Electronic Resource
    Electronic Resource
    Pancreatic Lipase: a Scheme of its Specificity and a Hypothesis of the Mechanism of its Action (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 777-778 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From the available evidence1, the following conditions appear to be necessary for lipase to exert its optimal action : (1) the acid residue should be electron donating ; (2) the alcohol residue should be electron attracting. The action of lipase is inhibited by aldehydes and ketones with an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172777a0
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  • 2
    Electronic Resource
    Electronic Resource
    Demonstration of Keratin with Aldehyde-Fuchsin (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 674-675 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Studies2*3 in our laboratory on the staining reactions of Gomori's aldehyde-fuchsin4 with various mouse tissues have shown that this stain has a strong affinity for tissue elements with a relatively high sulphur content. Mast cell granules and cartilage matrix, tissue elements containing highly ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172674a0
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  • 3
    Electronic Resource
    Electronic Resource
    ‘Azidine’ Transformations (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 922-923 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE carbamylazides, as a group, were classified by Bertho1 as resistant to the Curtius rearrangement. However, other work2 showed that while some members of this group (1, Rx or i?2 = H, R2 or R1 = alkyl/aryl) failed to become rearranged, others (1, Rt or R2 = C6H5) did so. K (2) II O (i) Hurd3 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170922b0
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  • 4
    Electronic Resource
    Electronic Resource
    Relativity and Indeterminacy (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 582-582 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the case of deterministic theories, we must surely distinguish between reversible and irreversible determined processes. Time, in statistical but determined laws, as distinct from dynamical laws, surely has a very definite significance, for example, in its relation to entropy changes and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170582a0
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  • 5
    Electronic Resource
    Electronic Resource
    A New Route to Substituted Guanidines (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 72-73 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Using hydrazine itself, the products by either of these schemes are identical. With an asymmetric hydrazine, however, the results by mode A would be, for example, with phenylhydrazine, a pyrazole derivative containing a free imino group in the 1-position, and a phenyl-substituted aminoguanidine ; ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169072a0
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  • 6
    Electronic Resource
    Electronic Resource
    Carbamidine-substituted Pyrazoles (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 1037-1037 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Aminoguanidine, although of the acyl hydrazide class, has shown differences from semicarbazide in many respects. It possesses considerably stronger basic powers. It yields imino-triazenes with aromatic -diketones, whereas semicarbazide forms osazones5 and its azide, guanyl azide, can be cyclized to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1671037a0
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  • 7
    Electronic Resource
    Electronic Resource
    Aminolævulinic Acid and Porphyrin Biosynthesis (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 1093-1094 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been known for some time that the proto -porphyrin molecule is synthesized in the red blood cell by condensation of eight molecules of glycine with eight molecules of a compound derivable from a-oxoglutarate1-2. Shemin and Kumin3 showed by means of isotopically labelled acetate and succinate ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1721093a0
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  • 8
    Electronic Resource
    Electronic Resource
    Melting Points of Mixtures of Cetyl Caprate with Lauryl Myristate (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 485-486 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Alternate possible arrangements of lauryl myristate and cetyl caprate in composite crystal lattices Al = size of gaps (in number of C-atoms) in the lattice Fig 2 Melting-point curves of n.ixtures of lauryl myristate (m.p. 35-3 C.) and cetyl caprate (m.p. 29-4 C.) This expectation was ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167485b0
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  • 9
    Electronic Resource
    Electronic Resource
    Thermal Reactions of Kenya Cattle vaccinated with Lapinized Rinderpest Virus (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 44-44 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. FIFTH DAY POST-INOCULATION : THE DIFFERENCE BETWEEN THE TEMPERATURES OF VACCINATED AND CONTROL CATTLE WHICH WERE HOUSED TOGETHER X ± tQ6 S~ P X t Control 1 : 10 1 : 2,000 1 : 4,000 1 : 10,000 100-7 ± 0-09 101-0 ± 0-10 101-0 ± 0-12 100-8 ± 0-10 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174044a0
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  • 10
    Electronic Resource
    Electronic Resource
    A New Approach to the Study of Electric Fields produced by Growing Roots (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 924-925 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have made an essentially new approach by studying the currents which are generated by a plant organ in a weakly conducting medium. Potential differences are measured between points in the medium near the plant without disturbing its normal growth in any way. If these measurements are made in a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174924a0
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