Search Results - (Author, Cooperation:D. S. Srivastava)

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  1. 1
    Staff View
    Publication Date:
    2012-06-09
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; *Biodiversity ; Climate Change/statistics & numerical data ; Consensus ; Ecology/methods/trends ; *Extinction, Biological ; *Human Activities ; Humans
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Despite concern about the effects of tropical forest disturbance and clearance on biodiversity,, data on impacts, particularly on invertebrates, remain scarce. Here we report a taxonomically diverse inventory on the impacts of tropical forest modification at one locality. We examined a ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  3. 3
    SRIVASTAVA, D. S.

    [s.l.] : Nature Publishing Group
    Published 1952
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] The cupric chloride solution should be prepared separately and the neutral formol added just before use. Fix small pieces of fresh tissue for 2-4 hr. at about 20 C. Rinse quickly in two changes of distilled water, transfer to a freshly prepared 1-5 per cent solution of silver nitrate and keep in ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  4. 4
    SRIVASTAVA, D. S.

    [s.l.] : Nature Publishing Group
    Published 1952
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] My preparations of the ovaries of Lumbricus, fixed in Bouin's fluid and stained with Ehrlich's hsem-atoxylin or iron-hsematoxylin, show convincingly that extrusion of nucleolar material takes place. The nucleolus is stained a purplish colour with Ehrlich's hsematoxylin. Often the nucleus contains ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Paul, A. ; Sen, S. C. ; Srivastava, D. S.
    Springer
    Published 1973
    Staff View
    ISSN:
    1573-4803
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes:
    Abstract Absorption and emission spectra of Tl1+ in a series of (16−x)R2O, 2x RCl, 84B2O3 glasses (where R refers to Na or K, andx varies from 0 to 4 mole) have been studied; and the results compared with those of Tl1+ in exclusively oxide and exclusively chloride co-ordinated polyhedra in crystalline phosphors. Both absorption and emission spectra of Tl1+ in chloride containing glasses gave strong evidence for complexes of the type: [Tl(oxide)6−n (chloride) n ] m−.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Staff View
    ISSN:
    1588-2780
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Energy, Environment Protection, Nuclear Power Engineering
    Notes:
    Abstract The sandwiched pellet technique using Makrofol-E plastic track detectors has been employed to determine trace quantities of uranium in nine brands of flavored chewing tobaccos consumed by the Indian population. In this technique the nuclear reaction,235U(n,f), is used for the quantitative estimation of uranium. The maximum value of uranium (1.88 ppm) has been found in raw tobacco leaves (Surti), while the minimum (0.13 ppm) in Tulsi (Double Zero brand). Other seven brands showed intermediate values of U-contents which are also reported in this paper. These values are compared with the U-contents reported in the literature for other forms of tobaccos.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses