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  • Springer  (34)
  • Nature Publishing Group  (23)
  • Oxford University Press  (10)
  • American Chemical Society (ACS)
  • American Physical Society (APS)
  • 2020-2022  (35)
  • 1955-1959  (16)
  • 1950-1954  (16)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 978-979 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The method is based on the circular gas chromato-graph already described1. The apparatus consisted of two 5-ft. copper columns of -in. outside diameter connected through a circulating pump at one end and a thermal conductivity detector and injection system at the other. Each column contained 12'25 ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 373-373 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The following mechanism is suggested : CH3 CH3 + H + CH3 CH3------C- -c- OH, OH CH, VOL. 169 CH3 GH3 CH3 CH3------G------C------C------CHS CH3 OH CH3 CH3 CH3 CH3------C 0H3 CH3 CH3-C- - CH 8 CH3 o: CH3 CH3 -CH3 CH3------C------C- CH H CH3 CH3 Further work on this ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 71-72 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The light emission from homogeneously initiated explosions of acetylene and oxygen containing a small amount of nitrogen dioxide as photosensitizer have been recorded as a function of time in a number of wave-length regions each covering about 40 A. The emission curves in regions where radical ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 391-392 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The stationary liquid phase normally used in gas chromatography has a low volatility relative to the compounds being separated. With the circular apparatus, the liquid need not have a low volatility. Fig. 2 shows the record for separation at room temperature of acetone, boiling point 56 -2 C, and ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 326-326 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In certain micro-organisms, shikimic acid has been demonstrated to be in the direct path to aromatic ring biosynthesis5. Microbial response to exogenous quinic acid has been reported in secondary mutants of Aerobacter which grew well when supplied with quinic acid5. Similar results have been ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 130-130 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A study of the effect of wave-length on the primary products of photolysis of duroquinone is now in progress. Mr. Michael Reed has found that when a glass filter (cut-off at 300 mµ) is used, triplet-state absorption in liquid paraffin and formation of semiquinone radicals in ethanol are still ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 251-251 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The box now in regular use at the experimental mouse-breeding unit at Hampstead is made of imported cedar or other suitable hard wood. The internal dimensions are 12 in. long, 8 in. wide and 4J- in. deep. The sides and ends are f in. thick with mortised joints reinforced by brass pins ; and the ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 784-785 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recently, during the course of marrow transplantation experiments in irradiated dogs, search was made for a biological cell marker characteristic of the donor which would be identifiable in the host. The possibility of a sex difference in dogs' blood analogous to that seen in man was considered and ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 785-786 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE absorption spectrum of chlorine monoxide was first detected in the photochemical reaction between chlorine and oxygen1-2 and all direct studies of its reactions have so far been carried out on this system. The mechanisms of these reactions have been thoroughly elucidated, but3 it has been ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 508-509 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The fessential conditions to be fulfilled if a reactive species, such as an iodine atom, is to be permanently isolated are : (1) diffusion to the vicinity of another atom must be prevented by using a very viscous solvent; (2) reaction with the solvent must not occur; such reactions are usually ...
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