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  • 1975-1979  (5)
Material
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Year
  • 1
    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 Photoperiodism, known to control the level of CAM in different types of CAM plants (e.g. Kalanchoe blossfeldiana, Bryophyllum daigremontianum), would act as a reliable timer for seasonal coherent adaptation. Two different endogenous rhythms (malic enzyme activity, PEP carboxylase capacity) appear to be separately coupled to dawn and dusk, respectively, thus achieving time-compartmentation of CAM; this feature suggests involvement of an ‘internal coincidence’ type of clock mechanism.Persistence in continuous darkness of the rhythm of malic enzyme activity (measured by label incorporation into pyruvate or by CO2 output) establishes its endogenous character and shows that light is not necessary for malate decarboxylation. The role of the dawn signal would be to entrain the CAM system, i.e. to phase the endogenous rhythm of malic enzyme activity correctly to local time. The possibility of an effect of the phase of the PEP carboxylase rhythm on the phase of the decarboxylation rhythm is ruled out by the presence of the intermediary malate storage step. Phase responses to red and to far-red show that phytochrome is involved in rephasing the rhythm of malic enzyme activity.The relative position of dusk affords a ‘measurement’ of the season by the CAM system entrained by dawn. According to the dusk-dawn interval, the level of PEP carboxylase capacity (amount of active enzyme) is modified, resulting in changes of CAM level (high activity under short days).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Infection 7 (1979), S. S463 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Ampicillinkonzentrationen im Serum und im Bronchialsekret wurden nach oraler Gabe von Bacampicillin bestimmt. Achtundzwanzig hospitalisierte Patienten mit akuten bronchopulmonalen Infektionen erhielten eine Einzeldosis von 800 mg Bacampicillin. Proben von Bronchialsekret wurden während einer diagnostischen Bronchoskopie gewonnen, gleichzeitig wurden Blutproben abgenommen. In den Bronchialsekreten wurden signifikante Ampicillinkonzentrationen gefunden; der Spitzenspiegel der nach etwa zwei Stunden erreicht wurde, betrug dabei im Mittel 0,27 µg/ml. Die Penetration von Ampicillin in das Bronchialsekret nach Gabe von Bacampicillin schien mit dem Grad der bronchialen Entzündung korreliert zu sein, der an der makroskopisch erkennbaren Purulenz oder der Eiweißkonzentration des Sekrets bemessen wurde. Die Ergebnisse lassen annehmen, daß Bacampicillin ein geeignetes Medikament zur Behandlung von akuten bronchopulmonalen Infektionen darstellt.
    Notes: Summary Ampicillin concentrations in serum and bronchial secretions after oral administration of bacampicillin were evaluated. Twenty-eight hospitalized patients with acute bronchopulmonary infections received a single dose of 800 mg of bacampicillin. Samples of bronchial secretions were obtained during diagnostic bronchoscopy and blood samples were drawn simultaneously. Significant concentrations of ampicillin were found in bronchial secretions, the peak level, reached after approximately two hours, being 0.27 µg/ml on an average. The penetration of ampicillin into the bronchial secretions after the administration of bacampicillin could be correlated with the degree of bronchial inflammation, as illustrated either by macroscopic purulence or protein concentration in the secretions. The results suggest that bacampicillin is a useful drug in acute bronchopulmonary infections.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Empirical economics 3 (1978), S. 183-201 
    ISSN: 1435-8921
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract In this paper price and wage determination is analyzed for 35 industries in West-Germany. Tests are made to classify industries as being competitive, discriminatory or sheltered. The chosen approach is related to the “Scandinavian” model. It is shown that about a third of the industries in the sample are not price takers in spite of international trade. Wages are strongly influenced by world market and exchange rate developments. As to the effectiveness of revaluations the results imply that, first, revaluations do provide a protection against imported inflation. Second, revaluations can be expected to produce real effects since they affect the relative price between competitively and non-competitively produced commodities and the terms of trade.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We review 258 cases of craniofacial vascular lesion treated by endovascular occlusion in the past 7 years in the Neuroradiology Departments of Nancy, Nantes, and Toulouse. Dural fistulas very often need both embolization and surgery. Craniofacial angiomas are not straightforward indications for therapy: the age of the patient, the unpredictability of evolution, and possible sequelae have to be taken into account; embolization is very successful in counteracting hemorrhage. Angiomatoses such as Rendu-Osler disease can respond well to repeated embolizations over several years. Lesions such as hemolymphangiomas are also excellent indications for embolization, either alone or with surgery. Occlusion by detachable balloon is ideally the most elegant method, but it is not always technically feasible, nor free from complications. *** DIRECT SUPPORT *** A2404071 00044
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 33 (1977), S. 443-444 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The presence of a conservative excitonic term in the ultraviolet circular dichroism spectra of NADP(H)-Cu2+ complexes in equimolar solution (5·10−4M/l) shows the existence of an intermolecular association by formation of a stable Cu2+-bridged stacked adduct between the purine moieties of 2 neighbouring dinucleotides.
    Type of Medium: Electronic Resource
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