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  • Springer  (54)
  • Oxford University Press  (7)
  • American Heart Association (AHA)  (1)
  • 2010-2014  (8)
  • 1975-1979  (37)
  • 1970-1974  (17)
Document type
Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 33 (1979), S. 357-364 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By means of an ESR detection method based on the optical pumping technique theg-factors and ESR-linewidths of the relaxed excited state (RES) of a number ofF- andF A -centres have been measured. From the linewidths information on the spatial distribution of the RES is obtained: The data are interpreted in terms of a very diffuse wavefunction which is essentially the same for all crystals when scaled with the lattice constant. A numerical value for the parameter describing the spatial extension is given.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 216 (1973), S. 81-90 
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The incidence of galactorrhea in an unselected group of 5597 outpatients of our gynaecological department was 0.89%. Only one patient had amenorrhea simultaneously (0.02%). There is no age dependency of galactorrhea during the period of sexual maturity (between the age of 20 and 50). A few cases can be observed in the postmenopause. The percentage of galactorrhea ocouring after a previous pregnancy is extremely small. Based upon the chemical analysis of secretions from galactorrhea and of normal human breast milk it is obvious that the two fluids are not identical. Irregularities of the menstrual cycles are present mainly in the form of monophasic cycles. There is a high incidence of pathological fasting plasma glucose concentrations (approx. 20%). An attempt is made to detect the different causes for galactorrhea. In more than 50% of the patients morphological alterations of the mammary tissue can be found. Six times there were intracanalicular papillomas. A procedure for the diagnosis of an uncomplicated galactorrhea is suggested.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 13 (1975), S. 40-43 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 19 (1978), S. 556-563 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Although a transitory maternal zinc deficiency has been shown to result in an increased cadmium-induced fetotoxicity, the results of the present investigation indicated that a maternal zinc deficiency apparently did not affect the placental transfer of cadmium. However, a zinc deficiency did alter the maternal distribution of cadmium. The increased cadmium fetotoxicity associated with a maternal zinc deficiency may be caused by a maternal alteration rather than a direct effect on the fetus. Further study is necessary prior to any definitive statement concerning the effects of a maternal zinc deficiency on cadmium. fetotoxicity.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 19 (1978), S. 206-214 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary This investigation has shown that not only the extent of fetal resorption and malformation but also the types of malformation seen in rats depend upon the strain used and day of gestation. Furthermore, the effects of zinc deficiency and cadmium administration on the fetus can be at least additive, as was seen for malformations. For fetal resorption, zinc deficiency potentiated the action of cadmium.
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 6 (1971), S. 311-312 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Archives of environmental contamination and toxicology 6 (1977), S. 63-68 
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The research was undertaken to analyze the uptake and distribution of cadmium-109 in mice following repeated injections and to observe how the simultaneous administrations of zinc affected the cadmium retention. Mice were given one, two, or three intravenous administrations at 48-hr intervals. Animals were sacrificed 2 min to 48 hr after each injection. Zinc had little effect on the retention of cadmium in the samples analyzed, and injections behaved independently of each other.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 19 (1975), S. 127-135 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract After a 2 week control period at 400 m, cattle were exposed to 5,000 m simulated altitude for 2 weeks, which was followed by a 2-week post-altitude control period. Plasma cortisol values from blood samples taken every 30 min for a total of 24 h indicated that cortisol was secreted episodically and that a circadian rhythm existed. When cortisol values were grouped into 4, 6-h periods, plasma cortisol was most abundant from 06:00 to 12:00 h with an average of 0.96µ g/100 ml and least abundant from 00:30 to 06:00 h with an average of 0.55µ g/100 ml. Plasma cortisol increased from 0.42 to 3.08µ g/100 ml during the 4 h ascent to 5,000 m and decreased to near normal levels the following day. A rhythmic plasma cortisol pattern was maintained after one day at simulated high altitude.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Anatomy and embryology 130 (1970), S. 153-176 
    ISSN: 1432-0568
    Keywords: Alkaline phosphatases ; Blood vessels ; Lymphatic system ; Mast cells ; Nucleotidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei der Ratte wurden die Arterien und lymphgefäße, die Blut- und Lymphcapillaren sowie die Gewebsmastzellen der Zunge hinsichtlich des Gehaltes an unspezifischer alkalischer Phosphatase, 5′-Nucleotidase und Polyphosphatasen (ATP'asen) untersucht. Der Nachweis der Enzyme erfolgte über einen größeren pH-Bereich (pH 9,4; 8,8; 8,4; 8,0; 7,6 und 7,2). Unspezifische alkalische Phosphataseaktivität fand sich in den innersten Bezirken der Adventitia von Arterien oberhalb eines Durchmessers von 120 μ, im Endothel des Abgangsbereiches von Arterien mit Durchmessern von 25–50 μ, im Endothel der Arteriolen, in den Endothelien der Blutcapillaren sowie in den Gewebsmastzellen. In den Blutgefäßcapillaren konnte immer ein höherer Gehalt an unspezifischer alkalischer Phosphatase in arteriellen als in venösen Schenkeln nachgewiesen werden. Die Gewebstmastzellen zeigten nur eine sehr schwache unspezifische alkalische Phosphataseaktivität. Durch Zusatz von 0,0025 M L-Cystein ließ sich die unspezifische alkalische Phosphatase vollkommen hemmen. Weder 0,0025 M p-Chloromercuribenzoesäure (PCMB) noch 10−4M Nickelionen beeinflußten die nachweisbare unspezifische alkalische Phosphataseaktivität. 5′-Nucleotidaseaktivität fand sich in der glatten Muskulatur der Lymphgefäße, in den Endothelien der Blut- und Lymphcapillaren sowie in den Gewebsmastzellen. Die Abgrenzung gegen die unspezifische alkalische Phosphatase gelang durch das unterschiedliche Reaktionsoptimum (pH-Optimum) beider Enzyme und durch die starke Aktivierbarkeit der 5′-Nucleotidase durch Nickelionen. Eine deutliche Polyphosphataseaktivität konnte von uns in der glatten Muskulatur der Arterien und Lymphgefäße, in den Blut- und Lymphcapillaren sowie in den Gewebsmastzellen nachgewiesen werden. Die Polyphosphatase der glatten Muskulatur der Arterien und Lymphgefäße ließ sich gegen die Polyphosphatase der Blut- und Lymphcapillaren (Endothelpolyphosphatase) durch das unterschiedliche Reaktionsverhalten beider Polyphosphatasen gegen ATP und ADP abgrenzen. Beide Polyphosphatasen zeigten eine deutliche Steigerung der Aktivität durch Zusatz von 0,0025 M PCMB. Dieser Effekt war jedoch mit Ausnahme der Muskelcapillaraktivität erst bei pH 8,0; 7,6 und 7,2 nachweisbar. Von diesen Polyphosphatasen unterschied sich die Polyphosphatase der Gewebsmastzellen durch ihre Hemmbarkeit mittels 0,0025 M PCMB. 0,0025 M L-Cystein beeinflußte die beschriebene Polyphosphataseaktivität nicht. Die Rolle dieser Enzyme im Stoffwechsel der Blut- und Lymphgefäße sowie der Gewebsmastzellen wurden diskutiert.
    Notes: Summary In the tongue of the rat the arteries and lymph vessels, the blood and lymph capillaries and the tissue mast cells have been examined with respect to their content of unspecific alkaline phosphatase, 5′-nucleotidase and polyphosphatases (ATP'ases). The histochemical investigation of these enzymes was carried out at pH 9.4; 8.8; 8.4; 8.0; 7.6 and 7.2. Unspecific alkaline phosphatase was found in the inner parts of the adventitia of arteries with diameters above 120 micra, in the endothelium of arteries with diameters from 25 to 50 micra at the origin from the parent vessel, in the endothelium of arterioles, in the endothelium of blood capillaries and in the tissue mast cells. A regularly, higher activity of unspecific alkaline phosphatase could be demonstrated in the arterial than in the venous parts of blood capillaries. In the tissue mast cells there was only a very weak activity. By adding 0.0025 M L-cystein to the incubation medium the unspecific alkaline phosphatase activity was completely abolished. The activity of the unspecific alkaline phosphatase was not influenced by addition of either p-chloromercuribenzoic acid 0.0025 M (PCMB) or 10−4M nickel ions to the incubation medium. 5′-nucleotidase activity was found in the smooth muscle of lymph vessels, in the endothelium of blood and lymph capillaries, as well as in the tissue mast cells. The differentiation against unspecific alkaline phosphatase was accomplished by making use of the different reaction optimum (pH-optimum) of both enzymes and the strong activation of 5′-nucleotidase by nickel ions. Polyphosphatase activity was demonstrated in the smooth muscle of arteries and lymph vessels, in the endothelium of blood and lymph capillaries, and in the tissue mast cells. The polyphosphatase of the smooth muscle of arteries and lymph vessels could be differentiated from the polyphosphatase of the blood and lymph capillaries by means of their different behaviour against ATP and ADP. Both polyphosphatases showed an increase of activity following the addition of 0.0025 M PCMB to the incubation medium. Except for the polyphosphatase activity of blood capillaries of the striated muscle, this activation could be demonstrated only at pH 8.0; 7.6 and 7.2. From these two polyphosphatases at least the polyphosphatase of the tissue mast cells could be differentiated because the reaction was inhibited after addition of 0.0025 M PCMB to the incubation medium. L-cystein (0.0025 M) had no influence on the polyphosphtase activity. The role of these enzymes in the metabolism of the blood and lymph vessels and the tissue mast cells is discussed.
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