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  • 1960-1964  (10)
  • 1930-1934  (2)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 71-72 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ability of a number of different nitrogenous materials, and amino-acids when individually used as the sole source of nitrogen and of various sugars and carbohydrates to produce pigment in Sabourauds medium, have been determined. The extent of pigmentation observed after 8 days is given in ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 1291-1292 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Five-mm. sections of 4-days old Avena coleoptiles (var. N.P.I) were incubated with radioactive di-sodium hydrogen phosphate (Na2H82PO4) and different concentrations of IAA in Jf/150 phosphate buffer of pS. 6-0 for 1 and 2 hr. The tissues were extracted with 80 per cent ethanol and the concentrated ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 1290-1291 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The auxin Hised was naphthalene acetic acid-l-14C (NAA-14C) obtained from Tracerlab Inc., Waltham, Mass., United States. The specific activity of this preparation was rather low (6-7 (jtc./mgm.); in the experiments described here, concentrations lower than 5 X 10-* M could not be used. To study the ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 134 (1934), S. 664-664 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE mouth-parts hitherto recognised in ticks comprise a hypostome and a pair of cheliceræ, the three together forming what is believed to be the piercing and sucking organ. The actual mouth-opening, however, has never been observed. In the course of my studies upon the anatomy of ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 127 (1931), S. 128-129 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE first requisite of tornado formation is a violent updraught of moist air. In a paper on the nor'-westers in Bengal, which will be published shortly, it is being shown from a large number of weather charts that the nor'wester squalls during the period February to June are due to the ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 17 (1964), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 16 (1960), S. 135-136 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es scheint, dass DNase und RNase bei der photosynthetischen Fixierung des CO2 verschiedene und komplizierte Wirkung ausüben. Die Saccharaose-Synthese wird durch die Behandlung mit DNase und RNase deutlich vermindert.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 1362-1363 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The species 0. perennis is mostly cross-pollinated and it has a wide range of variation with a number of distinct geographical races. In the work recorded here a Cam-bodian type of O. perennis Moench was used and Belling's simple acetocarmine technique adopted. Twelve pachytene bivalents were ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 167 (1962), S. 20-25 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The measurements on the luminescence spectra of TlCl+KCl mixed phosphor under low energy cathode rays at 80° K have been presented here. The reflectance as well as excitation spectra of this mixed phosphors have also been studied. The X-ray diffraction studies of the samples along with the optical studies show that the mixed phosphor consists of two phases: (1) KCl:Tl (2) TlCl:K. It has been observed that the emission bands due to thallous chloride are gradually quenched with the increase in potassium chloride content of the phosphor; further, the emission bands supposed to be due to KCl:Tl phosphors gradually appear. Since some of the emission bands obtained with KCl:Tl phosphors at high thallium content are also present in the luminescence spectra of thallous chloride it is suggested that such bands should be attributed to undissociated thallous chloride present in KCl:Tl phosphor. The quenching of thallous chloride emission by the incorporation of potassium chloride in the system has been explained as being due to the absence of stoichiometric excess of thallium in such mixed system. The results also show that the absorption spectra of the mixed system is determined by the minor components KCl:Tl. This indicates that the absorption spectra of KCl:Tl phosphor should not be affected by the presence of undissociated thallous chloride.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Zwischen der tetraploidenSesbania aculeata Pers. (2n=24) und der diploidenSesbania speciosa Taub. ex Engler (2n=12) wurden experimentell Artkreuzungen durchgeführt. 49 Kreuzungen vonS. aculeata ×S. speciosa ergaben in 4 Fällen (8.2%) Hülsenansatz. 3 dieser Hülsen konnten geerntet werden. Sie enthielten 25 taube Samen. Bei 56 reziproken Kreuzungen wurden 7 Hülsen angesetzt (12,5%) und 4 davon geerntet. Sie enthielten 62 taube und 4 entwickelte, aber nicht keimfähige Samen. Es wird gefolgert, dass für den Ausfall der Samenentwicklung die Genom-Unterschiede der beidenSesbania-Arten die Hauptursache darstellen.
    Notes: Summary InSesbania aculeata Pers. ♀ ×Sesbania speciosa Taub. ex Engler ♂, pod set was 8.2 per cent and the percentage of pod harvested (out of set pods) was 75. All seeds out of those harvested corss pods were nonviable. InSesbania speciosa Taub. ex Engler ♀ ×Sesbania aculeata Pers. ♂, the pod set was 12.5 per cent and the percentage of pod harvested (out of set pods) was 57.1 All seeds out of those harvested pods were nonviable. The genomic difference of the two species,aculeata (4n race) andspeciosa (1n race) is the main cause of failure of seed development.
    Type of Medium: Electronic Resource
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