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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 48 (1983), S. 309-315 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 12 (1983), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Epithelial outgrowths from hamster cheek pouch explants were cultured for 14 days in media containing calcium concentrations of 0.05 mM, 0.075 mM, 0.1 mM, 0.25 mM, 0.75 mM or 1.45 mM (control). Compared with controls, the cultures grown at lower calcium concentrations (0.25–0.75 mM), exhibited higher mitotic indices and an increase in outgrowth size. The mitotic index of cultures at 0.25 mM calcium concentration was 30 ± 2.26, compared to 24 ± 2.24 for controls. Increase in size of the outgrowths was also observed at 0.25 mM calcium concentration compared with those grown in control medium. The epithelial outgrowths grown in control media exhibited cell stratification not observed at lower calcium concentrations. These studies indicate that lower calcium concentration in the media (0.25–0.75 mM) increased epithelial cell proliferation and inhibited keratinization.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of advanced nursing 8 (1983), S. 0 
    ISSN: 1365-2648
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: As part of a wider study concerned with the changing nurse employment patterns a detailed questionnaire was completed by a total of 2325 qualified female nurses, 841 of whom were working fulltime in nursing, 634 were inactive, 678 were offering their services on a part-time basis and 172 were working in some other occupation. In a previous article the results of the analysis conducted on the responses to the attitude questions were presented. In this paper the replies to those questions aimed at soliciting the reasons felt to have impacted on the respondent's decision to take up nursing, to stay or to leave the profession and to re-enter the profession are analysed. As the questionnaires were distributed in the course of two projects separated by 4 years, what is of particular interest is the similarity of the two sets of results. These indicate that there is still a very high level of job satisfaction as evidenced by the extent to which nursing would be recommended to a friend or relative. The primary obvious reason for inactivity is the existence of a young child but when further intentions are explored it is clear that there is a large pool of qualified nurses keen to resume a career the main obstacle being the lack of sufficient flexibility of hours of working.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 39 (1983), S. 99-100 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An inversion within the subterminal inversion in 2L ofDrosophila ananassae has been detected in a laboratory strain originating from Kuala Lumpur, Malaysia. The break points of inversion have been located in the reference map of salivary chromosomes. The data on the frequencies of different karyotypes indicate that inversion heterozygotes exhibit heterosis.
    Type of Medium: Electronic Resource
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  • 5
    facet.materialart.
    Unknown
    New York : Periodicals Archive Online (PAO)
    Population and environment. 6:2 (1983:Summer) 84 
    ISSN: 0199-0039
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Sociology
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 261 (1983), S. 390-393 
    ISSN: 1435-1536
    Keywords: vinyl polymerization ; Ce(IV)-initiated polymerization ; polymerization by Ce(IV)-glucose redox system ; redox polymerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Aqueous polymerization of acrylonitrile (M) initiated by the Ce(IV)-glucose (R) redox system has been studied under nitrogen in the temperature range of 30–40 °C. The rate of polymerization (Rp) is proportional to [M]2, [R] and inversely proportional to [Ce(IV)]. The rate of ceric ion disappearance is proportional to [R] and [Ce(IV)]. The end group in the polymer is characterised by IR spectra. A suitable kinetic scheme has been proposed and explained in the light of these experimental findings.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Transition metal chemistry 8 (1983), S. 195-198 
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The reactions of niobium and tantalum pentaethoxides withtrans-cinnamic acid (HCA) and dihydrocinnamic acid (HDCA) were carried out in different stoichiometric ratios. The complexes of the type M(OEt)5−n(CA)n and M(OEt)5−n(DCA)n, (n=1, 2 or 3 and M=Nb or Ta) were obtained. Infrared studies indicate that both acids act as monodentate and monofunctional ligands,i.e. only the hydroxyl oxygen takes part in bonding to the central metal atom. The corresponding tertiary butoxide derivatives [M(OBut)5−n(CA)n] and [M(OBut)5−n(DCA)n] (M=Nb or Ta and n=1, 2 or 3) were prepared by the alcohol-interchange technique.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Genetica 60 (1983), S. 231-235 
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In Drosophila ananassae, three cosmopolitan inversions are very common in natural populations. Chromosomal polymorphism due to these inversions often persists when strains are maintained in the laboratory. A chromosomal analysis of a number of strains was made. Data on the frequencies of different gene sequences will be described separately. During the present investigation the same data have been analyzed in order to test the intra- and interchromosomal interactions in D. ananassae. The results reveal that interchromosomal interactions do not occur with respect to viability as unlinked inversions are associated randomly. However, the linked inversions of the third chromosome show non-random associations maintained by epistatic gene interaction and suppression of crossing over.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 27 (1983), S. 263-273 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Das thermische Zersetzungsverhalten des Hemihydrats von Kupferoxalat, sowie Scine Komplexe mit verschiedenen Aminen wurden mit den TG- und DTA-Methoden in Nitrogen- und Luft-Atmosphere untersucht. Die Komplexe CuC2O4 · 0.5 H2O, CuC2O4(NH3)2 und CuC2O4(py) ergaben nach der Zersetzung Cu2O als Endprodukt, wogegen eine andere Gruppe der Komplexe, d.h. CuC2O4(EtNH2)2. CuC2O4(MeNH2)2. CuC2O4(en)2 und CuC2O4(An)2 ein Endprodukt von CuO ergaben. All diese Komplexe zersetzten sich keine isolierbare, stabile Zwischenprodukte geformt zu haben, mit einer Ausnahme des CuC2O4(en)2, welches ein binukleares Zwischenkomplex, das [CuC2O4en]2 bildete.
    Abstract: Резюме Методами ТГ и ДТА изуч ено в атмосфере кислорода и азота тер мическое разложение полугидрата оксалат а меди и его комплексо в с различными аминами. П ри разложении комплексов CuC2O4 · O.5 H2O, CuC2O4(NH3)22 и CuC2O4(py) в качестве конечного продукта реакции обр азуется Cu2O, тогда как пр и разложении комплекс ов CuC2O4(EtNH2)2, CuC2O4(MeNH2)2, CuC2O4(en)2 и CuC2O4(An)2 — qoбразуется CuO. Все комплексы разлагают ся без образования ка ких-либо выделяемых стабильн ых промежуточных продуктов. Исключени е составлял комплекс CuC2O4(еn)2, который образует двухядерный комплек с (CuC2O4еn]2.
    Notes: Abstract The thermal decomposition behaviour of copper oxalate hemihydrate and its complexes with different amines has been studied by TG and DTA methods in nitrogen and air atmospheres. The complexes CuC2O4 · 0.5 H2O, CuC2O4(NH3)2 and CuC2O4(py) produced Cu2O as final residue after decomposition, whereas, another group of complexes, CuC2O4(EtNH2)2, CuC2O4(MeNH2)2, CuC2O4(en)2 and CuC2O4(An)2, gave a final residue of CuO. All the complexes decomposed without forming any isolable stable intermediate; an exception was CuC2O4(en)2, which formed a binuclear intermediate complex, [CuC2O4en]2.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Earth, moon and planets 28 (1983), S. 29-35 
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Employing the Haselgrove ray tracing equations and a diffusive equilibrium model of the ionosphere, the propagation characteristics of hook whistlers recorded at low-latitude ground station Varanasi (geomag. lat., 16°6′.N) are discussed. It is shown that the two traces of the hook whistlers are caused by the VLF waves radiated from the return stroke of a lightning discharge which after penetrating the ionosphere at two different entry points, propagated to the opposite hemisphere in the whistler mode and were received at 16 geomagnetic latitude. Further the crossing of ray paths for the same frequency leads to the explanation of the hook whistler. The lower and higher cut-off frequencies are explained in terms of their deviating away from the bunch of the recorded whistler waves and crossing of ray paths for the same frequency.
    Type of Medium: Electronic Resource
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