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  • 1995-1999
  • 1990-1994
  • 1975-1979  (38)
  • 1979  (38)
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  • 1995-1999
  • 1990-1994
  • 1975-1979  (38)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Herbage intake and milk production by grazing dairy cows 2. The effects of level of winter feeding and daily herbage allowance (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 34 (1979), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two experiments are described in which two levels of winter feeding and three levels of herbage allowance during the grazing season were imposed upon March/April calving British Friesian dairy cows. The winter treatments resulted in differences in live weight and milk yield at turnout of 35 and 53 kg and 3·4 and 3·2 kg d-1 for the two trials. Subsequently, when grazed at generous herbage allowances, the cows were able to compensate for much of this difference but when herbage was restricted the milk yield differences were accentuated.Groups of cows from each winter treatment were offered 25, 50 or 75 (Experiment 1) and 30, 50 or 70 (Experiment 2) g herbage DM per kg LW daily during the grazing season. Daily herbage intakes on the three allowances in each trial were 14·1, 13·3, 10·7 and 12·5, 12·1, 11·5 kg OM and milk yields were 16·0, 15·3, 12·5 and 15·2, 14·3, 11·8 kg SCM respectively. Both intake and milk production were depressed once the cows were forced to consume more than 50% of herbage on offer or to graze the sward down to a mean height of less than 8–10 cm. Grazing behaviour observations indicated that under rotational managements the cows did not compensate for restrictions in available herbage by grazing longer. Highest levels of milk production per unit area were observed in both trials when production per cow was depressed by 20–25%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1979.tb01477.x
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  • 2
    Electronic Resource
    Electronic Resource
    .gamma. Irradiation of subtropical fruits. 2. Volatile components, lipids and amino acids of mango, papaya, and strawberry pulp (1979)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 27 (1979), S. 42-48 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60221a038
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  • 3
    Electronic Resource
    Electronic Resource
    Dopamine inhibition of action potentials in a prolactin secreting cell line is modulated by oestrogen (1979)
    [s.l.] : Nature Publishing Group
    Nature 282 (1979), S. 855-857 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In this study GH3 B6 cells, a subclone of GH3 rat prolactin cell line were used. These cells secrete prolactin and respond to both TRH and oestradiol2. Stable intracellular recordings lasting between 10 min and 1 hour were obtained from 260 cells. Of the cells tested 51 % were electrically ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/282855a0
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  • 4
    Electronic Resource
    Electronic Resource
    Hyperdiploid species hybrids for gene mapping in Xenopus (1979)
    [s.l.] : Nature Publishing Group
    Nature 279 (1979), S. 157-158 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 is a schematic presentation of how such animals are obtained, in this case for X. laevis x X. gilli hybrids. First generation hybrid females from this and other species combinations frequently produce diploid eggs from allotetraploid oocytes produced by endo-reduplication in the germ line. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/279157a0
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  • 5
    Electronic Resource
    Electronic Resource
    Stress, Crisis, and Behaviour — a South African Case (1979)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 17 (1979), S. 117-140 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: It is March 1970 and a quiet warm Sunday afternoon in the town of Yungay. Most of the children are attending a performance by the visiting circus in the stadium, while their parents are relaxing in anticipation of the busy week ahead. The market is crowded with peasants who are selling and tourists who are buying. This picturesque town of 4,500 inhabitants is festive, and from many a house the radio can be heard broadcasting the World Cup soccer match from Mexico City.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00005206
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  • 6
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    Faith, Pharmacopoeia and Ritual (1979)
    Leiden : Periodicals Archive Online (PAO)
    Journal of Asian and African Studies. 14:3/4 (1979:July/Oct.) 283 
    Details
    ISSN: 0021-9096
    Topics: Ethnic Sciences , History , Political Science , Sociology , Economics
    Notes: Research Communications
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:n207-1979-014-03-000008
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  • 7
    Electronic Resource
    Electronic Resource
    Interaction of 24,25-Dihydroxyvitamin D3 and parathyroid hormone on bone enzymes in vitro (1979)
    Springer
    Calcified tissue international 27 (1979), S. 47-52 
    Details
    ISSN: 1432-0827
    Keywords: Calvarium ; Phosphatase ; Vitamin D3 Metabolites ; Parathyroid hormone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The in vitro effects of vitamin D3 metabolites, parathyroid extract (PTE), purified parathyroid hormone (bPTH), vitamin A, and heparin on acid and alkaline phosphatases in rat or mouse calvaria in culture were investigated. Results show that: (a) when compared to values found in half calvaria incubated for 24 h in control medium, the bone acid and alkaline phosphatase content is significantly higher in paired halves incubated with PTE (1 USP/ml), bPTH (4×10−8M), heparin (5 USP/ml), vitamin A (23 USP/ml), 25-(OH)D3 (2.5×10−11 to 2.5×10−8M), 24,25-(OH)2D3, and 1,25(OH)2D3 (2.5×10−12 to 2.5×10−7M); (b) the presence of 24,25-(OH)2D3 at low concentrations in the incubation medium decreases significantly the PTE, bPTH, vitamin A, or heparin induced stimulation of the phosphatase activities. This interaction is also observed when measuringβ glucuronidase and glucose-6-phosphatase activities and45Ca release from previously labeled mouse calvaria; (c) a similar activity could not be found with 1,25-(OH)2D3 suggesting that 24,25-(OH)2D3 may have a specific role in bone metabolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441160
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  • 8
    Electronic Resource
    Electronic Resource
    Gas chromatographic conditions for the linearity of the relationship between σT,t and tR in open tubes (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 456-460 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography ; Capillary ; Theory ; Linearity between peak width and retention data ; Evaluation of GC equipment ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The linearity of the relationship between σT,t2 and (1 + k)2 is studied with the view of using it for the evaluation of GC equipment. Based on appropriate analytical expressions it is concluded that in general this relationship is not linear and that practical procedures for column evaluation should be developed that take this non-linearity into account.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240020716
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  • 9
    Electronic Resource
    Electronic Resource
    The preparation of thick-film glass capillary columns (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 613-616 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, capillary, glass ; 5 mikrometer quartz powder roughening layer fused onto boro silicate glass during drawing process ; Complete procedure given reproducible preparation of stable thick film capillaries ; Static impregnation with 1.5% (w/v) rubber solutions possible ; Very low column bleed, ideal for GC-MS ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A detailed method for the routine preparation of glass capillary columns is presented. The method consists of coating a glass tube with quartz powder prior to pulling the tube into a capillary. The inner surface of the capillary consists of an even distribution of quartz particles fused to the walls. This surface has been found readily deactivated by standard procedures and ideal for the preparation of thick-film glass capillary columns. The method has been thoroughly tested in two independent laboratories to ensure that the procedures described are reproducible.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240021006
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  • 10
    Electronic Resource
    Electronic Resource
    Die Reduktion von Germanium- und Zinntetrabromid durch Tri-tert-butylphosphin: Brom-tri-tert-butylphosphonium-SalzeProfessor Kurt Issleib zum 60. Geburtstage gewidmet (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 458 (1979), S. 85-88 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reduction of Germanium and Tin Tetrabromide by Tri-tert-butylphosphine: Bromo-tri-tert-butylphosphonium IonsTri-tert-butylphosphine react with equimolar amounts of germanium or tin tetrabromide with formation of “1:1 adducts”. The new compounds are characterized as bromo-tri-tert-butylphosphonium salts (t-C4H9)3PBr+MBr3- by 1H n.m.r., 31P n.m.r., infrared and Raman spectroscopy (M = Ge, Sn).
    Notes: Germanium- und Zinntetrabromid reagieren mit Tri-tert-butylphosphin unter Bildung von 1:1 „Addukten“ der Zusammensetzung (t-C4H9)3PMBr4 (M = Ge, Sn). Die neuen Verbindungen werden durch 1H- und 31P-NMR-Spektren sowie durch Infrarot- und Ramanspektren als Brom-tri-tert-butylphosphoniumsalze (t-C4H9)3PBr+MBr3- charakterisiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794580111
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