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  • 1980-1984  (3)
  • 1960-1964  (1)
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  • 1
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    The @journal of modern African studies 1 (1963), S. 544-545 
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: Soon after the first session of the United Nations Economic Commission for Africa in Addis Ababa in January 1959, a Library was established to serve the needs of the Commission's secretariat. A comprehensive list of all the publications concerning Africa available at the U.N. Headquarters Library in New York was prepared as a basis for the acquisition of material. Lists were also drawn up of the government publications required from each individual country, dating back to 1950 (1958 for annuals and periodicals), and these were obtained from the governments concerned. Constant contact is maintained with them, to keep the collection up to date. Non-government publications were purchased through the Headquarters Library during the first four years. Since 1963, the Library has placed orders through booksellers in each country in Africa, and a few others elsewhere. A full list of booksellers in Africa is now being compiled, and will be published as soon as possible.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra of aqueous solutions of dimethylsulfoxide, dimethylsulfoxide-d6, acetone and acetonitrile are reported in the OH stretching region, and in the stretching regions of the functional groups of these solutes. Raman intensities and frequency shifts of these bands show definite trends with varying concentrations of the solutions. The results obtained are discussed in terms of the mixture model of water, and they are compared with results obtained from Raman spectral studies of aqueous electrolytes. It is proposed that water structure breaking and the formation of solute-solvent complexes when organic solutes are added to water can account for these results.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 15 (1984), S. 80-85 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra of solutions of dimethyl sulphoxide (DMSO) in carbon tetrachloride (CCl4) and water are reported for both parallel and perpendicular polarizations in the S=O stretching region. The various bands obtained were subjected to Gaussian band fittings. It was observed that the bands for solutions in CCl4 may be fitted satisfactorily by considering four components and those for solutions in water may be fitted by considering five components. It is inferred that the band at ca 1070 cm-1 observed in the spectra of DMSO in CCl4 belongs to the S=O stretching mode of free DMSO, whereas the two bands observed at ca 1058 cm-1 and ca 1040 cm-1 belong to out-of-phase and in-phase S=O stretchings of the cyclic dimer. The low-frequency band at ca 1025 cm-1 is assigned to linear dimer/higher polymers. Aqueous solutions of DMSO show an additional band at ca 1010 cm-1 due to DMSO hydrogen-bonded with water.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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