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  • Nature Publishing Group  (72)
  • American Geophysical Union (AGU)
  • 2015-2019  (1)
  • 1955-1959  (57)
  • 1940-1944  (15)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 153 (1944), S. 763-764 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] GRIFFITH1 was the first to show that an attenuated and non-encapsulated 'rough' (JB) variant of one specific type of Pneumococcus could be transformed into a virulent and encapsulated 'smooth' (S) form of another specific type. The transformation was accomplished in vivo by injecting subcutaneously ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 153 (1944), S. 226-226 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] EMBEDDING rock or mineral particles in a uniform thin sheet of cellulose acetate facilitates their optical examination, transport and storage, especially during the field study of graded concentrates derived from detrital or crushed rocks. More than a hundred times the* quantity of such ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 482-482 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Although it is true that these effects do occur on plants, it is by no means certain which, if any, of these reactions is of primary importance, and which are secondary. The living plant represents a dynamic, balanced system, and any change which affects one function of the plant will necessarily ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1288-1288 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As Robbins8 has pointed out, grafting of adult stems on seedlings of many different kinds of plants has induced a juvenile type of growth in the adult scion. Attempts were made to induce juvenility and thereby enhance rooting ability in Hevea by grafting buds from a mature Hevea clone (Tjirandji 1) ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 477-477 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1132-1132 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] These facts suggested that a temporary nutritional stress at or about the time of mating may be able to cause infertility. To test this hypothesis, mice were subjected to transitory nutritional stress at or about the time of mating. Two groups of mice were used: (a) a control group of 19 female ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 1038-1040 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ONE of the problems of outstanding interest to the biochemist working in the field of human blood groups is the elucidation of the chemical structures which are responsible for the complete serological independence of the various blood-group characters. Water-soluble substances showing A, B, H or ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 664-665 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The following equation expresses the permeability of a porous material solely in terms of the size-distribution of its pores. If r L, r2 . and rn cm. represent the mean radius of the pores (in decreasing order of size) in each of n equal fractions of the total pore space, then permeability is given ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 287-287 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The field, on the black fen, was sampled to determine the level of infestation. The infestation was severe-5-24 viable cysts per gm. and 1,072 eggs per gm. of air-dried soil. When a field is lightly infested with potato root eelworm, the clamp site will quickly become contaminated, as some soil ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 176 (1955), S. 659-659 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Work study may be defined as "the systematic and objective examination of all the factors which directly govern the productive or operational efficiency of any specified activity in order to effect improvement". It is thus founded on scientific analysis and measure-ment in order to determine the ...
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