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  • Nature Publishing Group  (3,642)
  • Annual Reviews  (252)
  • PANGAEA
  • 1980-1984
  • 1955-1959  (3,901)
  • 1956  (3,901)
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  • 1980-1984
  • 1955-1959  (3,901)
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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1267-1267 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It was with a sense of genuine sorrow that the many friends of Dr. Arthur Lewis Clark learned of his death on September 20 at Kingston, Ontario, at the age of eighty-three. Dean of the Faculty of Applied Science at Queen s University, Ontario, for twenty-four years from 1919, an outstanding ...
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  • 2
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1267-1268 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Dr. G. F. Davidson DR. G. F. DAVIDSON, of the British Cotton Industry Research Association, head of the Chemistry Department at the Shirley Institute, Manchester, is resigning his post at the end of this year, though he will remain in the service of the Association. Dr. Davidson has already served ...
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  • 3
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    Nature 178 (1956), S. 1268-1268 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AT the anniversary meeting of the Royal Society held on November 30, Sir Cyril Hinshelwood was re-elected president. Sir William Penney, director of the Atomic Weapons Research Establishment, Alder-maston, was elected treasurer in succession to Sir Thomas Merton. The other officers re-elected for ...
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  • 4
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1269-1269 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] POLISH medical literature comprises at present no less than thirty-nine periodicals, but only a few of these reach medical men and scientists outside Poland. It is for that reason that the Polish Medical Alliance, an organization with editorial offices in Chicago, decided to present to the ...
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  • 5
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1437-1437 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE spectacular rise in fibre flax cultivation and the consequent increased demand for sowing seed during times of national emergency are common knowledge in the United Kingdom. The trend of cultivation of oil flax in the countries of northern Europe seem to follow a somewhat similar pattern. ...
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  • 6
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1436-1437 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Atom, the monthly bulletin of the United Kingdom Atomic Energy Authority, is distributed to the staff of the Authority, to similar organizations overseas, to industrial firms concerned with the exploitation of nuclear energy, to the Press and to those to whom a record of information on the work of ...
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  • 7
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1270-1270 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHILE numerous workers have claimed to have detected variations in the diameter of the Sun, other investigators have failed to find any variations, or to detect any significant differences between the equatorial and polar diameters. A paper entitled Greenwich Observations of the Horizontal and ...
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  • 8
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1436-1436 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE forty-eighth annual report of the Governing Body of the Imperial College of Science and Technology (London) for the year 1954-55 (from the College) notes that appointments were made to the new chairs of applied science, with special reference to engineering, soil mechanics, heavy electrical ...
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  • 9
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1437-1437 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE fourth edition of the Forestry Commission pamphlet, entitled The Dedication of Woodlands: Principles and Procedures (Booklet No. 2: pp. 60. London: H.M.S.O., 1956; 2s. 6d. net), has been issued with a foreword by Lord Radnor, chairman of the Forestry Commission, and Major Sir R. Proby, chairman ...
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  • 10
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1437-1438 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN further studies of the respiration of barley plants, E. W. Yemm and A. J. Willis (New Phytol, 55, 2, 229; 1956) have investigated the nature of the products formed during the assimilation of inorganic forms of nitrogen by excised roots. Some new analytical methods are described. They have ...
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  • 11
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    Nature 178 (1956), S. 1276-1277 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE major part of the inaugural address as president of the Institution of Electrical Engineers, delivered by Sir Gordon Radley, director general of the Post Office, on October 4, was devoted to a consideration of world telecommunication, a subject particularly topical in view of the recent opening ...
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  • 12
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    Nature 178 (1956), S. 1277-1277 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SOME new and interesting aspects of nitrogen metabolism in barley, especially as it is affected by potassium deficiency, have been investigated by R. G. Coleman and F. J. Richards (Ann. Bot., N.S., 20, 79, 393; 1956). Barley was grown in water and sand culture, using a variety of nutrient ...
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  • 13
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1280-1283 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is now well known that it is possible to communicate over long distances at very high frequencies by forward scatter from ionospheric turbulence1-3. Since the latter part of 1955, an elusive but persistent trouble has been experienced on an experimental scatter communications link from Gibraltar ...
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  • 14
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    Nature 178 (1956), S. 1292-1293 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Pacinian corpuscles of the cat s mesentery were isolated, together with a length of sensory axon. For mechanical stimulation, the deflexions of a piezoelectric crystal produced by square voltage pulses of 0 1 msec, duration were transmitted to the corpuscle by a glass stylus2. The deflexions could ...
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  • 15
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    Nature 178 (1956), S. 1293-1295 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The method presented here was found very useful for demonstrating the stepwise ribonuclease enzymic specificity. The technique depends on the fact that basic dyes which normally polymerize in aqueous solution are depolymerized by nucleic acid, resulting in complex formation. Ionophoretic mobility ...
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  • 16
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1301-1301 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Experiments carried out in the Earhart Laboratory at Pasadena on members of five clones of V. palustris gave results that may be summarized as follows. Flower initiation may occur in plants under both short (8 hr.) and long (16 hr.) photoperiods, and also in continuous light. Plants kept in long ...
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  • 17
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    Nature 178 (1956), S. 1303-1304 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Jeffreys-Bernal hypothesis has been investigated by a thermodynamic study of sub-solidus phase equilibria in the pseudo-binary system Ni2GeO4 MgaSiO4 (Fig. 1). At 1,500 C., nickel germanate, which possesses a spinel structure, dissolves 9 per cent of magnesium silicate. From this and other ...
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  • 18
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    Nature 178 (1956), S. 1301-1302 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The disease was found by Spencer and Glasscock1 to be caused by a water-borne fungus (probably a species of Spongospora) which infects the roots and causes them to become swollen, distorted and crooked . Infected plants lose vigour, become stunted and may eventually die. Investigations, since made ...
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  • 19
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    Nature 178 (1956), S. 1304-1304 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In this paper I tried to show that all the facts agree to this supposition, if at least the transition energy K per gram is smaller than an upper limit given by GIX *e - where the left-hand side is the mean value over the whole transition layer of the ratio of K to the product of the ...
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  • 20
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    Nature 178 (1956), S. 1304-1305 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A sheet of muscovite mica was partially immersed in a solution containing radioactive caesium chloride, rinsed and dried. The end of the sheet which had been immersed exhibited a counting-rate (Geiger Miiller counter) of the order calculated for the replacement of a half-filled layer of surface ...
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  • 21
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    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1308-1308 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The relation is as follows. If we suppose that φ(v) is a distribution function giving the number of words in a given vocabulary occurring Tv times in a given text of T words, φ (v) = a/v2 where a is a constant, is found to be approximately true. This relation was pointed out by Zipf1 and has been ...
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  • 22
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    Nature 178 (1956), S. 1310-1310 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] (not included in the monthly Books Supplement) Great Britain and Ireland Nuffleld Foundation. Report for the year ended 31 March 1956. Pp. 160. (London : Nuffield Foundation, 1956.) [249 Empire Cotton Growing Corporation. Progress Reports from Experiment Stations, Season 1954-55. Tanganyika ...
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  • 23
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    Nature 178 (1956), S. 1202-1202 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IONIZING radiations, in the form of X-rays and nuclear radiations, have been used in medicine for some sixty years, and lately the scope and intensity of their application have been immensely increased. In this time, however, comparatively few text-books have been available which both present to ...
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  • 24
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    Nature 178 (1956), S. 1453-1455 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN previous electron microscopic studies it was shown that pepsin treatment of vaccinia elementary bodies discloses a nucleus-like inner body1, which contains deoxyribonucleic acid2 3. If digestion is performed after Chabaud-fixation, this body has an annular shape caused by a central depression. ...
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  • 25
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    Nature 178 (1956), S. 1204-1204 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE sceptics are justified in ascribing much of the most interesting evidence in favour of telepathy and clairvoyance to chance; but this explanation cannot be applied to some of the experiments on card guessing, which have given results that would not have occurred by chance even if the whole ...
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  • 26
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    Nature 178 (1956), S. 1205-1207 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE use of electronic computers has made it possible to calculate the electronic wave functions of simple molecules with any degree of accuracy desired. The wave function may be taken as a series of Slater determinants ; the one-electron functions contain adjustable parameters which can be found by ...
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  • 27
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    Nature 178 (1956), S. 1211-1212 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The working life of Colonel Sir Gerald Ponsonby Lenox-Conyngham, who was born at Moneymore, Londonderry, on August 21, 1866, the fifth son of Sir William Lenox-Conyngham, and educated at the Edinburgh Academy and the Royal Military Academy, Woolwich, may be reckoned from the time of his being ...
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    Nature 178 (1956), S. 1213-1213 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN moving the second reading of the Patents Bill in the House of Lords on November 22, Lord Mancroft said that when the Patents Act, 1949, was drafted it was envisaged that, on the restoration of normal peace-time conditions, the Patent Office examiner would make his first report about three months ...
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  • 29
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    Nature 178 (1956), S. 1458-1458 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the course of work at the Radcliffe Observatory on velocities of southern B stars, certain stars with distances probably greater than 3 k.parsecs were selected for study at a dispersion of 19 A./mm. at 3933 A., with the view of possible resolution of the interstellar K line into components due ...
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    Nature 178 (1956), S. 1221-1222 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] WHEN the dextran-producing organism Betacoccus arabinosaceous is grown on a medium containing sucrose and an appropriate second sugar (to serve as an acceptor of transferred glucose units) oligosaccharides are produced in appreciable quantities1. A particularly interesting example is the formation ...
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    Nature 178 (1956), S. 1460-1461 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] With the methyl-polymethacrylate we confirmed the results obtained by Deutsch, Wolf and Reddish1 : the dielectric dispersion appears below the glass temperature Tg and is prolonged through the transition temperature without any discontinuity. With the ethyl, n-butyl and isobutyl compounds, the ...
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    Nature 178 (1956), S. 1462-1462 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Until now most workers have used this thermal conductivity apparatus more or less in an empirical fashion and obtained calibration curves in terms of galvanometer deflexions against concentration when the same current is passed through the helix of the conductivity cell. This procedure involves ...
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    Nature 178 (1956), S. 1461-1461 
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    Notes: [Auszug] Based on thermodynamical reasoning, we have evolved a new concept of concentration potential (Cp) of an electrolyte solution, which may be denned as the ratio of moles of the electrolyte per 1,000 gm. of water at a given molality to the moles of the electrolyte per 1,000 gm. water at saturation at ...
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    Nature 178 (1956), S. 1462-1463 
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    Notes: [Auszug] Highly electropositive aromatic diamines can form stable solid paramagnetic salts with simple anions2, for example, the perchlorate of Wurster s ion, (CH3)2 N N(CH3)2]+C104-, and it was interesting to see if there also existed stable salts of quinones with simple cations: O Q O]-Na+ These should ...
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    Nature 178 (1956), S. 1463-1464 
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    Notes: [Auszug] The blowholes examined occurred in cast iron to which magnesium had been added. Water was poured upon the iron in the ladle. The object of this double treatment was to introduce hydrogen into the liquid metal by reaction between the magnesium and the water. It is believed that the blowholes were ...
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    Nature 178 (1956), S. 1233-1234 
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    Notes: [Auszug] It has been reported by West and Rinehart3 that one molecule of an endiol compound reacts with two molecules of ninhydrin to give rise to hydrindantin (C18H10O6), and it has recently been shown by us4 that 1 : 2 dienol glucose (I), which is formed on hydro-lysing the condensation product of glucose ...
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    Nature 178 (1956), S. 1236-1237 
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    Notes: [Auszug] When a nymphal locust approaches the moult it ceases feeding and becomes progressively less and less active. For a few hours before the moult and for a few hours again afterwards, it is almost motionless, except when it is seeking a suitable position in which to moult. Reflex movements of the limbs ...
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    Nature 178 (1956), S. 1238-1238 
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    Notes: [Auszug] In malignant disease there is an excessive protein demand by the rapidly growing tumour cells, which can only be met by utilizing the hosts dispensable protein and the labile serum proteins. This drain on the bodys store of protein is bound to bo reflected as a change in the concentration of the ...
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    Nature 178 (1956), S. 1234-1235 
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    Notes: [Auszug] The adrenal glands of atropinized, adult cats were depleted of their amine content by repeated, intravenous doses of acetylcholine. In all experiments one gland of each animal was used as a control and the depleted gland was compared with it. Also, control experiments were performed. The adrenaline ...
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    Nature 178 (1956), S. 1238-1239 
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    Notes: [Auszug] Chorio-allantoic membranes of 10-day fertile hens eggs were infected with herpes virus. After 2, 4, 6, 8 and 10 hr. incubation, membranes were excised, washed and put in diluted anti-herpes serum overnight at 4 C. The membranes were then washed, homogenized and diluted. Fixed and stained smears of ...
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    Nature 178 (1956), S. 1240-1241 
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    Notes: [Auszug] Yttrium-90 is a pure beta-ray emitter with a maximum energy of 2.2 MeV. corresponding to a maximum range of 1 gm./cm.2 and having a radioactive half-life of 61 hr. It can be prepared as sintered rods of oxide which are cut to size. The seeds are irradiated in the atomic pile at the Atomic Energy ...
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    Nature 178 (1956), S. 1242-1243 
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    Notes: [Auszug] To determine whether or not there exist conditions under which unimolecular hydrolysis occurs, we have hydrolysed suitably substituted amides in an acid solvent (95-100 per cent sulphuric acid) which possesses good ionizing properties but contains little free water, and which is therefore ...
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    Nature 178 (1956), S. 1244-1244 
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    Notes: [Auszug] Fig. 1. Glow-discharge detector Fig. 2. Detection of components of paraffin mixture Use is made of the fact that the voltage existing across a normal gaseous discharge is a function of the type of gas used. This voltage changes by several volts with the introduction of a minute amount of impurity ...
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    Nature 178 (1956), S. 1247-1248 
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    Notes: [Auszug] The principle of multiplication is based on a geometrical system, namely, a rectangular area which is deflected relative to a system of rectangular axes. The axes divide the rectangular area into four rectangles, A, B, C and D, which are equal in area in its undetected position. The areas in the ...
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    Nature 178 (1956), S. 1140-1140 
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    Notes: [Auszug] THIS introductory text-book, by one who has A taught biochemistry for many years to senior students who major in chemistry or in one of the biological sciences, has a flavour of a kind which is all too unusual in modern text-books of biochemistry. The historical approach has been widely used in the ...
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    Nature 178 (1956), S. 1249-1250 
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    Notes: [Auszug] In a recent paper4, I have derived the Lindemann law from the theory of Debye and Waller for the thermal dependence of the intensity of reflexion of X-rays by a crystal. The development yields5 a direct derivation of the Simon melting equation, which can be written Pm=A[(TmITm,0)Z-l] (1) where Tm ...
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    Nature 178 (1956), S. 1252-1252 
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    Notes: [Auszug] The method used for drying is to cook the fresh ripe fruit in the ashes of a fire for an hour. The cooked product is left for a day and then it is peeled, the seeds removed, and it is cut into small pieces which are arranged on a net to a depth of four or five inches. This net is suspended over a ...
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    Nature 178 (1956), S. 1253-1254 
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    Notes: [Auszug] APPLICATIONS are invited for the following appointments on or before the dates mentioned : biochemist (with at least three years experience in the procedures of biochemistry or chemical pathology, and a higher degree in biochemistry or physiological chemistry such as the M.Sc., Ph.D., or ...
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    Nature 178 (1956), S. 1139-1140 
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    Notes: [Auszug] AN author who plans to teach the practice of design and analysis of experiments commits himself to writing more systematically and in greater detail than Fisher, yet at a lower level of mathematical sophistication than Kempthorne. However useful his book for reference purposes, he can scarcely ...
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    Nature 178 (1956), S. 1141-1144 
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    Notes: [Auszug] THE addition of salt (sodium chloride) to our food has been curiously taken for granted although there seems to be little physiological evidence as to whether or not we are benefited by this habit. Ever since historical records have been kept, salt has played an amazingly important part in the ...
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    Nature 178 (1956), S. 1149-1149 
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    Notes: [Auszug] The Nobel Prize in Physics for 1956 has been awarded, jointly, to Dr. W. Shockley, Prof. J. Bardeen and Dr. W. H. Brattain for their work o., semiconductors. During the years they worked together at the Bell Telephone Laboratories they removed many of the obscurities and much of the empiricism from ...
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    Nature 178 (1956), S. 1477-1477 
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    Notes: [Auszug] At autopsy the tip of a teat of an Ayrshire cow and pieces of skin from the end of the tail and from immediately above the hoof of an Ayrshire calf were obtained. They were fixed in 5 per cent formol-saline and embedded in paraffin. Serial sections of the blocks were cut and stained by Masson s ...
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    Nature 178 (1956), S. 1477-1478 
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    Notes: [Auszug] The technique can be used to determine the spatial relationships of different fungal species within plant tissue. An interesting example is the distribution of the mycelium of Fusarium culmorum in decomposing roots of rye-grass. In samples of 486 fragments, this fungus occurred in 135 outer and 24 ...
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    Nature 178 (1956), S. 1478-1479 
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    Notes: [Auszug] All mature Amoebae of this group contain some spores. For the sake of simplicity the species A. lescherae will be used to portray the new knowledge acquired. It is needless to emphasize the precaution of dealing with a culture of A. lescherae uncontaminated with any other amoeba species. Introduce ...
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    Nature 178 (1956), S. 1479-1479 
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    Notes: [Auszug] First 1953 returns showed repeated laying in following weeks of the season 2. But no 1953 turtle repeated in 1954 ; and so through 1954-55, until 1956 (about 4,000 tagged). It is unlikely that tags could be regularly overlooked at these three small beaches, where every female is numbered in, ...
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    Nature 178 (1956), S. 1479-1480 
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    Notes: [Auszug] One of the characters of the coliform soft rot bacteria is their ability to grow and produce an acid reaction in salicin basal-salt media. A solid medium was therefore devised which would be selective and would allow this reaction to take place as an aid to identification. The constituents are as ...
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    Nature 178 (1956), S. 1480-1480 
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    Notes: [Auszug] Commercial seed dressings of gamma-B.H.C., used for wireworm control, are normally applied at the rate of about 600 gm. of pure insecticide per gram of cereal seed, but Gough and Woods1 used dressings of three times this strength (40 per cent gamma-B.H.C. at 3 oz. per bushel). A small pilot trial ...
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    Notes: [Auszug] The mathematics involved in solving this problem for automatic exchanges were first developed by Erlang (Brockmeyer, Halstrom and Jensen)1. Subsequent extensions2 provide a basis for calculating subscriber delay, given the traffic-level, the number of operators available to deal with it, and the ...
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    Notes: [Auszug] The purpose of this communication is to point out that the above estimate has a property which, except for the 2x2 table (see ref. 1, p. 310), has not been recorded. The estimate is identical with that obtained by equating to zero a particular component of the highest-order interaction. This is the ...
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    Notes: [Auszug] (Meeting marked with an asterisk * is open to the public) Tuesday, January 1 INSTITUTION OF ELECTRICAL ENGINEERS (at Savoy Place, London, W.C.2), at 3 p.m. Mr. J. F. Coales : The Evolution of Automation . (Christmas Lecture for Older Schoolchildren. To be repeated on Wednesday, January 2, at 3 ...
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    Nature 178 (1956), S. 1177-1178 
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    Notes: [Auszug] Twenty-two mature rats were used for the present investigation. Parts of the submaxillary and sub-lingual glands were processed at the same time under identical conditions. The glands were fixed in 10 per cent formol saline for 6 hr. Frozen sections 10-25µ thick were then cut and washed in ...
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    Nature 178 (1956), S. 1182-1182 
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    Notes: [Auszug] Administrations of thyroxine (thyroxine crystals, Squibb, in distilled water) were made to Silky fowl of both sexes during enforced feather regeneration in test of these questions. Three male and three female Silkies were deplumed regionally and, upon evidence of new feather growth, injected ...
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    Notes: [Auszug] A quick-drying coloured solution of cellulose acetate is applied to the plant organ from which measurements are required. When the dry film is removed it bears an impression of the sculpturing of the epidermis so that areas which were above lateral cell walls are thicker, and thus appear darker, ...
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    Nature 178 (1956), S. 1188-1189 
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    Notes: [Auszug] Fig. 1 is a drawing of a cross-section of the testa. All layers characteristic of the cruciferous seed-coat1 are present. The uneven height of the palisade cells is responsible for a distinct reticulation which is shown by the whole seed and, also, by surface preparations of the palisade layer. The ...
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    Notes: [Auszug] That these phenomena are not unique to apples has been shown by chromatographic examination of xylem sap extracted from shoots of a range of dicotyledons, monocotyledons and gymnosperms. The plants used were all selected as capable of yielding xylem sap2. However, not all species examined were ...
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    Notes: [Auszug] The geological formations exposed in the cirque cover the periods from Middle Triassic up to Ceno-manian. The fossil frogs were found in a lacustrine continental deposit. The profile of the place is as follows: Formations Depth (m.) Upper basaltic flow 10.00 Lacustrine deposit (Varvy silt ...
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    Notes: [Auszug] To be specific, assume a right circular cylinder of aluminium of 1/4 in. diameter symmetrically driven in fundamental longitudinal resonance at 22,000 cycles per second. Under these conditions there is a loop of motion at either end of the rod, the amplitude being 180 out of phase at one end from ...
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    Nature 178 (1956), S. 1368-1368 
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    Notes: [Auszug] THE French version of this book, the first edition of which appeared in 1952, has already become widely known, and the English translation deserves the warmest of welcomes. The senior author, F. Riesz, who died earlier this year (see Nature, 177, 870; 1956), was one of the pioneers of functional ...
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    Notes: [Auszug] THE opening chapter of this small book contains an interesting discussion of the general factors to be taken into account before building a pilot plant; these include, among others, cost estimation, the size and location of the plant, and the type of men required to operate it. It is also ...
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    Notes: [Auszug] THE arrangement and content of the third edition of this book are substantially the same as in the second edition. New material has been introduced in a few places in the text and, in seven pages of additional notes, at the end. An introduction has been added. It is to be regretted that the author ...
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    Notes: [Auszug] WITH the senior science master of Manchester Grammar School as editor and part author, one former member of the staff collaborating, and another participating with advice, this excellent text- book for middle school use has the hall-mark of thoroughness and sound teaching that would be expected. It ...
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    Notes: [Auszug] TEXTILE fibres are a class of technologically important materials with interesting mechanical properties : they are non-linear, strongly time-depen dent and sensitive to humidity and temperature. Their various chemical structures, and the physical and chemical treatments they receive in processing ...
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    Nature 178 (1956), S. 1087-1089 
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    Notes: [Auszug] THE annual open days of the Chemical Research Laboratory (Department of Scientific and Industrial Research) were held during October 2-5. Some of the exhibits by the six main research groups are described in the following paragraphs. One laboratory has been reconstructed to house the larger ...
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    Nature 178 (1956), S. 1093-1094 
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    Notes: [Auszug] AFTER an illness lasting almost three months, Prof. Doris Livingston Mackinnon died on September 10, at the age of seventy-two. She was the eldest of five talented children born to Lachlan Mackinnon, advocate of Aberdeen, and Theodora Mackinnon, ne Thompson, of London, and she was born on September ...
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    Nature 178 (1956), S. 1095-1095 
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    Notes: [Auszug] THE Council of the American Geographical Society has made the following awards : Cullum Geographical Medal: Prof. J. Russell Smith, emeritus professor of economic geography in Columbia University, and author of several books on North America that have become classics in their field; Charles P. Daly ...
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    Notes: [Auszug] PARALLEL to the increasing use of radioactive isotopes by industry, there has been an increase in the demand for advice on the precautions required to ensure safe handling and disposal of radioactive materials, and both the Health Physics Division and the Isotope Division's Advisory Service on the ...
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    Nature 178 (1956), S. 1097-1097 
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    Notes: [Auszug] THE Cambridge Instrument Co., Ltd., celebrated the seventy-fifth anniversary of its foundation this year, and in commemoration of this interesting event a 2 8-page illustrated brochure has been issued in which the history and development of the Company are briefly outlined. The Company was one of ...
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    Notes: [Auszug] The principle of the method is that the displacement to be measured causes a small strip of indium antimonide crystal to change its position relative to a permanent magnet, the poles of which are shaped in such a way that there is a strong field gradient in the direction of movement. The mean field ...
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    Notes: [Auszug] THE appearance of the first part of the seventh volume of Lavoisier s collected works marks, we hope, the beginning of the last phase in the publication of the literary remains of this many-sided genius. The first four volumes, containing his contribution to chemistry and physics, appeared during ...
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    Notes: [Auszug] THIS slender volume, the third of a series of Interscience Tracts on Physics and Astronomy , contains a comprehensive and accurate introduction to the study of physical phenomena exhibited by fully ionized gases. Both in electronics and astrophysics the interest in different manifestations of ...
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    Notes: [Auszug] ALTHOUGH the average university student of botany devotes no more than a small fraction of his time to the anatomy of the angiosperms and gymnosperms, there has, in recent years, been an increased interest in the study of wood structure. This is because it is being realized more and more that the ...
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    Notes: [Auszug] The X-ray powder reflexions of these clays consist of several broad reflexions near those of montmorillonite or hydrated halloysite (Fig. 1, 1, Awazu clay; 2, Nata clay), and a quartz reflexion (Q) is found associated with them. There is almost total absence of basal reflexions in the range 0 -20 ...
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    Notes: [Auszug] NEW opportunities for industry to acquire basic knowledge of nuclear energy are offered by a special course which has been arranged at the Harwell Reactor School. The standard Reactor School course is one of fourteen weeks duration, giving instruction primarily in reactor physics and engineering. ...
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    Notes: [Auszug] SIR JAMES SCOTT WATSON took the chair at the winter conference of the British Agricultural History Society held in December in co-operation with the Association of Agriculture at the Institute of Education, University of London. The conference listened to three papers : one by Mr. F. C. Payne, of ...
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    Notes: [Auszug] THE development of strains of insects which are resistant to the usual pesticides may make it necessary to change over to the use of more dangerous substances, for example, in the control of malaria. This is one reason why it is important that the study of the toxicity of modern pesticides and of ...
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    Notes: [Auszug] The diploid number of chromosomes of Gasterosteus aeuleatus as studied from squash preparations of testes, entire embryos and conjunctiva of the eyes of adult fishes is 42 ± 2. The small size of the chromosomes still leaves some doubt whether the observed variation in the counts is due to ...
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    Nature 178 (1956), S. 1127-1128 
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    Notes: [Auszug] The minute size of the specimen is indicated in Fig. 1 by comparing it with a fragment of the dust from an electric shaver. Copepods are delicate organisms living in water, and contract and shrivel so badly on drying that no zoologist would think that a recent specimen mounted on card would be ...
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    Nature 178 (1956), S. 1380-1381 
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    Notes: [Auszug] THE Textile Institute has decided to make a special award of a medal and £20, which, by arrangement with the City and Guilds of London Institute, is offered in that organizations Technical Teachers Certificate examination to the most successful can- didate who is a part-time teacher of ...
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    Nature 178 (1956), S. 1132-1132 
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    Notes: [Auszug] What I did say was that an increase of production is inflationary if it means an increase in the aggregate cost of production. In quoting me as having said that automation reduces the effect of inflation, Mr. Albu omitted my all-important reservation other things being ...
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    Nature 178 (1956), S. 1011-1014 
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    Notes: [Auszug] IN view of the attempts which are frequently made to compare both the magnitude and the organization of the research effort in Great Britain with that in the United States, the report Organization of the Federal Government for Scientific Activities which has recently been issued by the National ...
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    Nature 178 (1956), S. 1031-1031 
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    Notes: [Auszug] REPLYING to a Parliamentary question in the House of Commons on October 23, Mr. J. R. Bevins, Parliamentary Secretary to the Minister of Works, as representing the Lord President of the Council, said that the five-year plan for the expansion of the activities of the Department of Scientific and ...
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    Nature 178 (1956), S. 1125-1125 
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    Notes: [Auszug] Both the Cree Indians and the Eskimos were patients in tuberculosis sanatoria. Since the frequency of the factor in these Crees was essentially the same as in the neighbouring healthy Chippewa it would not seem that there could be any relationship between the facts that the Eskimos had tuberculosis ...
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    Nature 178 (1956), S. 1128-1129 
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    Notes: [Auszug] The photoperiodic treatments have been tabulated in the order of increasing time-interval from germination to flowering (Table 1). Individual treatment means have been omitted, and photoperiodic indications have been bracketed into statistically homogeneous groups, each group being furnished with ...
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    Nature 178 (1956), S. 1036-1037 
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    Notes: [Auszug] THE annual conference of the Society of Leather Trades Chemists was held in the University of Leeds during September 21-22, the chair being occupied by the president, Dr. R. G. Mitton. The morning session of the first day was opened with a paper by Dr. G. H. Green on the mechanism of liming and ...
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    Nature 178 (1956), S. 1387-1387 
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    Notes: [Auszug] A TTACHED to the bald eagle is a degree of popular interest far beyond that normally associated with other birds of prey. Early in the history of the United States the bald eagle, of all the varied forms of wildlife in North America, was selected as the national emblem. By act of Congress, on June ...
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    Nature 178 (1956), S. 1387-1389 
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    Notes: [Auszug] THE characteristic energy losses of electrons passing through thin foils1 have been interpreted in terms of collective oscillations by Bohm and Pines2 and in terms of high-lying quasi-stationary excited states by Hayasi3. It is the purpose of the present article to outline an alternative ...
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    Nature 178 (1956), S. 1014-1015 
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    Notes: [Auszug] MANY text-books on experimental design tend to concentrate on the combinatorial aspects of the subject and on methods of analysis. (The notable exception is, of course, Sir Ronald Fishers original treatise.) As a result, many biological research workers and students are discouraged in their efforts ...
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    Nature 178 (1956), S. 1027-1028 
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    Notes: [Auszug] Dr. J. W. TREVAN was well known as a pharmacologist and as a pioneer of the biological testing of drugs. He died on October 13 last at the age of sixty-nine. He was born in Bodmin and after education in Plymouth he gained scholarships to St. Bartholomews Hospital, London, where he obtained several ...
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    Nature 178 (1956), S. 1391-1392 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] TUMOURS irradiated with sublethal X-ray doses can be schematically considered as containing two kinds of tumour cells, differing in their prospective reproductive potentialities. One fraction has been damaged irreversibly so as to lose the ability for continued reproduction. These cells may die ...
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    Nature 178 (1956), S. 1053-1054 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] In order to determine the absorption and metabolism of BHC isomers, deposits of carbon-14-labelled isomers were made from carbon tetrachloride solution in stoppered 100-ml. Ehrlenmeyer flasks and a weighed batch of mosquitoes (50100 mixed sexes) added. A piece of untreated filter paper was included ...
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