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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 100 (1978), S. 4307-4309 
    ISSN: 1520-5126
    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
    Plant, cell & environment 1 (1978), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. Green plants require a continuous supply of Fe as they grow, because Fe does not not move from the older to the newer leaves. Soils do not lack Fe per se, but it may not be available to plants grown in alkaline soils. Plants are classed ‘Fe-efficient’ if they respond to Fe-deficiency stress by inducing biochemical reactions that make Fe available in a useful form, and ‘Fe-inefficienT’ if they do not. Iron uptake induced in response to Fe stress involves release of hydrogen ions and reductants by the root. The lowered pH and presence of reductant at the root zone, along with reduction of Fe3+ to Fe2+ at the root surface, enables Fe2+ to be taken up primarily through the young lateral roots. Ferrous iron is present throughout the protozylem and may or may not have entered the root by a carrier. The root-absorbed Fe2+ is oxidized to Fe3+ at the junction of the protoxylem and the metaxylem, chelated by citrate, and then transported in the metaxylem to the plant top. In the plant, the chemical reactions injuced by Fe-deficiency stress may affect nitrate reductase activity, use of Fe from Fe3+ phosphate and chelating agents, and tolerance to heavy metals. An efficient mechanism for Fe uptake in roots appears to be important for the efficient use of Fe in plant tops.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 260 (1976), S. 420-421 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Northern Hemisphere has cooled down during the past 30 yr (refs 13); Kukla and Kukla2 have shown that the increase in the mean annual area of snow and ice over the Northern Hemisphere during the winter of 197172 was equivalent to one-sixth of the change necessary to bring back the full-ice ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    The @journal of modern African studies 14 (1976), S. 700-705 
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: In 1964, in response to a growing number of strikes, the recently-formed independent Government of Kenya established a new method of resolving industrial conflict. The purpose of this short article is to describe the operation and effects of the Kenyan Industrial Court, and to draw attention to some features that have affected its efficient operation.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 38 (1976), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Calcicolous plants are generally more Fe-efficient than calcifugous plants, because they respond to Fe stress by releasing H-ions and “reductants” from their roots that causes Fe to become available. The objective of our study was to determine if differential response to Fe stress in calcicolous and calcifugous varieties affects nitrate reductase activity. T3238FER (Fe-efficient) and T3238fer (Fe-inefficient) tomato (Lycopersicon esculentum Mill.) cultivars were grown in nutrient solutions supplied with N as NH4+-N plus NO3−-N, and as NO3−-N only. The chemical reactions induced by Fe stress concomitantly increased nitrate reductase activity in roots and tops of calcicolous, but not in calcifugous tomato. This nitrate reductase activity decreased, however, when Fe was made available to the plants. When Fe stress was eliminated by adding Fe, nitrate reductase activity was comparable in the two cultivars.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Celestial mechanics and dynamical astronomy 20 (1979), S. 389-404 
    ISSN: 1572-9478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Halo orbits originating in the vicinities of both,L 1 andL 2 grow larger, but shorter in period, as they shift towards the Moon. There is in each case a narrow band of stable orbits roughly half-way to the Moon. Nearer to the Moon, the orbits are fairly well-approximated by an ‘almost rectilinear’ analysis. TheL 2 family shrinks in size as it approaches the Moon, becoming stable again shortly before penetrating the lunar surface. TheL 1-family becomes longer and thinner as it approaches the Moon, with a second narrow band of stable orbits with perilune, however, below the lunar surface.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 3 (1979), S. 553-557 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La perfusion intraveineuse chez l'homme de GIP de porc provoque une libération d'insuline lorsqu'un certain degré d'hypoglycémie est atteint. Cette riposte insulinique dépendant de la glycémie survient pour une dose de GIP donnant un taux circulant de ±1 ng/ml, soit un taux physiologique qui peut être atteint après ingestion de glucose, d'huile de maïs, ou d'un repas varié. Nous avons mesuré les taux sériques de GIP par radio-immunoessai; l'antisérum utilisé dans toute l'étude mesure 2 formes immunoréactives de GIP. Chez les malades atteints de pancréatite chronique, les taux de GIP sont anormalement élevés après glucose per os ou après un repas liquide à plusieurs composantes. Les mêmes types de réponses exagérées ont été observées chez les sujets obéses ou dans le diabète débutant de l'adulte. La réponse est inférieure à la normale en cas de malade coeliaque. Le GIP a sans aucun doute une action physiologique sur l'axe entéro-insulaire. Mais son rôle dans les états pathologiques n'est pas encore clairement démontré.
    Notes: Abstract Intravenous infusion of porcine GIP in man induces insulin release when a degree of hyperglycemia is present. This glucose-dependent insulinotropic response occurs when a dose of GIP is administered to obtain circulating levels of approximately 1 ng/ml, a physiologic level that can be achieved by the ingestion of glucose or corn oil or a mixed meal. Serum GIP was measured by radioimmunoassay, and the single antiserum used in all the described studies measures 2 immunoreactive forms of GIP. In patients with chronic pancreatitis receiving an oral glucose load or a mixed liquid test meal, GIP levels have been shown to be exaggerated. Similar elevated responses have been observed in obese patients and in maturity onset diabetes. A reduced GIP response has been seen in patients with celiac disease. A physiologic role for GIP in the enteroinsular axis has been established. However, involvement of the hormone in pathophysiologic situations is equivocal.
    Type of Medium: Electronic Resource
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  • 8
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    Norman, Okla. : Periodicals Archive Online (PAO)
    World literature today. 51:2 (1977:Spring) 230 
    ISSN: 0196-3570
    Topics: Linguistics and Literary Studies
    Description / Table of Contents: COMMENTARIES
    Notes: VARIA ISSUE
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  • 9
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    Norman, Okla. : Periodicals Archive Online (PAO)
    World literature today. 51:2 (1977:Spring) 233 
    ISSN: 0196-3570
    Topics: Linguistics and Literary Studies
    Description / Table of Contents: COMMENTARIES
    Notes: VARIA ISSUE
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  • 10
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    Norman, Okla. : Periodicals Archive Online (PAO)
    World literature today. 52:4 (1978:Autumn) 580 
    ISSN: 0196-3570
    Topics: Linguistics and Literary Studies
    Description / Table of Contents: COMMENTARIES
    Notes: VARIA ISSUE
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