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  • 1
    ISSN: 1420-9071
    Keywords: Gonadotropin releasing hormone ; GnRH ; GnRH receptors ; hamsters ; photoperiod
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Both intact and ovariectomized+adrenalectomized hamsters on a short photoperiod, had a daily surge in plasma LH at approximately 16.00–18.00 h. The number of pituitary GnRH receptors was generally lower in ovariectomized+adrenalectomized hamsters than in intact animals, but both intact and ovariectomized+adrenalectomized hamsters had a decrease in the number of receptors just prior to the LH surge. These results show that gonadal steroids are not involved in regulating the pre-LH surge fall in the number of GnRH receptors.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 36 (1980), S. 614-615 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary On an absolute basis, the intradermal pigeon crop-sac bioassay (PCA) gave results that were 20.5% higher than the radioimmunoassay (RIA) in rat anterior pituitary (AP) preparations. A highly significant correlation (r=0.87) was obtained between RIA (in μg) and PCA (in Reece-Turner units) when 58 medium samples obtained by culturing rat APs in vitro were assayed for prolactin (PRL) content.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 38 (1982), S. 784-785 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary When cuprizone was fed to mice at a 0.5% level for 2 weeks, cupro-zinc superoxide dismutase activity in the liver declined, but there was an increase in mangano-enzyme activity.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 32 (1976), S. 941-943 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The infusion of linear somatostatin did not block prolactin release induced by either perphenazine, TRH or serotonin. Somatostatin infusion, however, potentiated prolactin release induced by perphenazine and TRH but not that induced by serotonin.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 33 (1977), S. 858-859 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Non-pregnant, pregnant and fibrosarcoma-bearing non-pregnant mice differ in their total hepatic mitochondrial protein content, as well as the electrophoretic pattern following separation on SDS acrylamide gels.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 16 (1972), S. 343-360 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung In der Arbeit wird geprüft, ob die Häufigkeit von bestimmten Infektionskrankheiten nach Taifunen in Verbindung mit Überschwemmungen in Manila, zunahm, wo 1970 3 Taifune auftraten, von denen einer der verheerendste war, der je vorher berichtet wurde. Die Krankheitshäufigkeiten von Cholera, Typhus, Gastroenteritis, Pneumonie, Bronchitis und Influenza wurden statistisch ausgewertet und mit den Häufigkeiten der gleichen Krankheiten in Baguio, einer Stadt ohne Taifune, verglichen. Trotz vermehrter Regenfälle, Zerstörungen und vorübergehendem Ausfall der sanitären Einrichtungen ergab sich kein signifikanter Anstieg in der Häufigkeit der Krankheiten als Folge der Taifune. Obwohl Cholera in Manila endemisch ist, ergab sich weder ein Anstieg von Cholera noch Typhus. Ein beobachteter Anstieg der Häufigkeit von Krankheiten der Atemwege und des Magendarmtraktes war statistisch nicht signifikant.
    Abstract: Resume Dans ce mémoire, on recherche si la fréquence de certaines maladies infectieuses augmente à Manille après le passage de typhons suivis d'innondations. Pour ce faire, on s'est basé sur 3 typhons de 1970, dont l'un fut le plus dévastateur de mémoire d'homme. Le nombre de décès dûs au choléra et à la typhoïde ainsi que celui des diagnostiques cliniques de gastroentérite, de pneumonie, de bronchite et de grippe signalés dans les rapports de routine furent analysés statistiquement et comparés aux valeurs correspondantes de Banguio, ville qui n'avait pas été ravagée par des cyclones. Malgré l'augmentation des précipitations, la destruction des canalisations et l'absence momentanée d'installations sanitaires, on n'a pas pu déceler d'augmentation significative, dûe aux typhons, du nombre de cas de maladies infectieuses. Bien que le choléra soit endémique à Manille, on n'en a pas constaté davantage de cas, d'ailleurs de ceux de typhus. L'augmentation constatée des maladies des voies respiratoires ou du système gastro-intestinal n'est pas significative, elle non plus.
    Notes: Abstract The paper examines whether there was a greater risk of certain infectious diseases after typhoons combined with floods in Manila, which experienced three typhoons in 1970 one of which was the most disastrous ever recorded. The data on morbidity of cholera, typhoid and clinical syndromes diagnosed as gastroenteritis, pneumonia, bronchitis and influenza from routine but active collecting were statistically examined and compared for seasonal trends with those of Baguio, a town which did not experience typhoons. In spite of increased rainfall, destruction and temporary breakdown of sanitation, no significant differences attributable to the typhoons were detected in any of the studied diseases. In particular, there was no increase in typhoid nor in cholera in this cholera endemic town. The observed higher incidence of respiratory and to some extent also of gastrointestinal diseases was not statistically significant.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Physics and chemistry of minerals 16 (1989), S. 747-751 
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract The dielectric constants and dielectric loss values of BeAl2O4 (chrysoberyl), MgAl2O4 (spinel), Be2SiO4 (phenacite), and Mg2SiO4 (forsterite) were measured at 1 MHz using a two-terminal method and empirically determined edge corrections. The results are: chrysoberyl, κ′ a =9.436, κ′ b =9.071, κ′ c =8.269; spinel, κ′ a =8.18; phenacite, κ′ a =6.28, κ′ c =6.06; and forsterite, κ′ a =6.867, κ′ b =7.392, κ′ c =6.739. The agreement between measured dielectric polarizabilities as determined from the Clausius-Mosotti equation and those calculated from the sum of oxide polarizabilities according to αD(M2M′X4) = 2αD(MX)+αD(M′X2) is ~ 1.0%.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Physics and chemistry of minerals 18 (1991), S. 1-6 
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract The dielectric constants and dissipation factors of synthetic tephroite (Mn2SiO4), fayalite (Fe3SiO4) and a forsteritic olivine (Mg1.80Fe0.22SiO4) were measured at 1 MHz using a two-terminal method and empirically determined edge corrections. The results are: tephroite, κ′a= 8.79 tan δa = 0.0006 κ′b = 10.20 tan δb = 0.0006 κ′c= 8.94 tan δc= 0.0008 fayalite, gk′a = 8.80 tan δa = 0.0004 gk′b= 8.92 tan δb = 0.0018 gk′c = 8.58 tan δc = 0.0010 olivine, gk′a = 7.16 tan δa = 0.0006 gk′b = 7.61 tan δb = 0.0008 gk′c = 7.03 tan δc = 0.0006 The low dielectric constant and loss of the fayalite indicate an exceptionally low Fe3+ content. An FeO polarizability of 4.18 Å3, determined from αD(FeO) = [αD (Fe2SiO4)-αD(SiO2)]/2, is probably a more reliable value for stoichiometric FeO than could be obtained from FexO where x = 0.90–0.95. The agreement between measured dielectric polarizabilities as determined from the Clausius-Mosotti equation and those calculated from the sum of oxide polarizabilities according to αD(M2M′X2) = 2αD(MX) + αD(M′X2) is ∼+2.8% for tephroite and +0.2% for olivine. The deviation from additivity in tephroite is discussed.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Physics and chemistry of minerals 16 (1989), S. 741-746 
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract Using fused SiO2, CaF2, and SrF2 samples with accurately known dielectric constants, we have evaluated the accuracy and precision of two-terminal dielectric constant measurements on small single crystals using empirically determined edge corrections. Values of κ′ at 1 MHz of 3.836±0.05 for silica, 6.814±0.07 for CaF2 and 6.463±0.09 for SrF2 indicate an accuracy and precision of 1.0–1.5% for samples having areas of 0.05–1.0 cm2. Dielectric constants of BeO, MgO, and CaO measured by this technique are: BeO, κ′a=6.87 and κ′c=7.74; MgO, κ′= 9.90; and CaO, κ′=11.95 where κ′a and κ′c are the dielectric constants parallel to the a and c axes, respectively. Dielectric loss measurements on CaO in vacuum between 5–400 K at 10–105 Hz indicate significant dispersion at temperatures higher than 300 K, but the effect of the losses on the dielectric constant is less than 1% at 1 MHz and 300 K.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 99 (1986), S. 109-119 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The precipitation behaviour of basic plutonium(IV) compounds from dilute nitric acid medium with aliphatic dicarboxylic acids has been investigated. Unlike plutonium(IV) oxalate, which is precipitated in acid medium (1–4M), the higher dicarboxylates precipitate in 0.9–2.5 pH range and their elemental analysis indicate Pu/dicarboxylate ratio of 1∶1. The mode of formation, composition, solubility and thermal degradation behaviour for plutonium(IV) hydroxosuccinate has been studied. The hydroxy group determination by kinetic titration using fluoride complexing revealed that the compound has a Pu:OH ratio of 1∶1 and determination of bridging oxygen group gave a Pu:O ratio of 1∶0.5 suggest its formation as hydroxysuccinate having an oxobridged formula.
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