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  • Articles: DFG German National Licenses  (11)
  • 1995-1999  (6)
  • 1975-1979  (5)
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  • Articles: DFG German National Licenses  (11)
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Years
Year
  • 1
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 46 (1995), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Life history and population dynamic patterns of Gambusia affinis in southeastern Louisiana varied spatially and temporally in 1990 and 1991, but were consistent with previous reports of this species in the southern regions of its natural range. Several differences exist among populations in different geographic regions within the United States, as reported in the literature, which do not follow a‘ native v. introduced’ dichotomy: (1) brood size decreases and offspring size increases from north to south; (2) large overwintered females in northern areas produce more broods within a season than those in southern populations, while the reverse is true for young-of–year females; (3) minimum size at first reproduction follows a seasonal pattern within populations, but tends to be smaller in southern and larger in northern and Hawaiian populations; (4) synchronous reproduction early in the season is characteristic of northern populations, but does not occur in southern areas; and (5) mosquitofish reproduce year–round in Hawaii, while 'southern’ populations within the continental U.S. cease reproduction during winter.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  A novel virus of pigs, swine hepatitis E virus (swine HEV), was recently identified and shown to be antigenically and genetically related to human HEV. In the present study, we attempted to infect specific-pathogen-free (SPF) pigs experimentally with swine HEV or with human strains of HEV. Serum samples collected from naturally infected pigs were used as the source of swine HEV. Pigs inoculated intravenously with serum samples containing swine HEV seroconverted to anti-HEV 4 to 8 weeks postinoculation, and the virus spread to an uninoculated pig. Swine HEV was detected in nasal and rectal swab materials as early as 2 weeks postinoculation and for 4 to 8 weeks thereafter. Viremia appeared 4 to 6 weeks postinoculation and lasted 1 to 3 weeks. The inoculated pigs appeared clinically normal and serum liver enzymes were not significantly elevated. In contrast, pigs were not infected when inoculated intravenously with about 105 monkey infectious doses of one of two human strains of HEV (Sar-55 or Mex-14).
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 256 (1975), S. 52-54 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two separate preparations of KLH (Pacific Bio-Marine, Venice, California) were used for these studies. Hartley strain albino guinea pigs (250-300 g) were bred at the Division of Animal Care at Yale University School of Medicine. On day 0 animals were flank skin tested by intradermal injection of ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 34 (1978), S. 804-806 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 2-{benzoylamino} pyridinium benzoate (BAPB) has exhibited an antisickling effect with homozygous S/S erythrocytes in vitro. This study suggests that BAPB prevents sicklin by inhibiting the gelation of hemoglobin S.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 263 (1976), S. 767-769 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Parasites for culture were obtained from a splenectom-ised chimpanzee (Pan troglodytes) inoculated with a chimpanzee-adapted isolate of the Malayan Camp strain of P. falciparum12. Nine days after inoculation 52% of its erythrocytes were parasitised with ring forms and 6% with schizonts. A sample ...
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0428
    Keywords: Keywords Amylin ; hypertension ; calcitonin ; ACE inhibition ; calcitonin gene related peptide.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Amylin (or islet amyloid polypeptide) has been reported to have binding sites in the central nervous system and the kidney and has been shown to activate plasma renin. It has been postulated that this peptide may be an important mechanistic link between hypertension and diabetes in the insulin resistance syndrome. To explore this issue, the effects of rat amylin on mean arterial blood pressure were investigated in anaesthetised rats. Amylin elicited a pressor response of approximately 10 mmHg (maximal at 100 pmol · kg–1) which was apparent within 30–60 s and persisted over 15 min. At higher concentrations amylin elicited a hypotensive response (negative log IC50 8.52 mol · kg–1). The novel amylin receptor antagonist AC413 (12 nmol · kg–1· min–1) reduced the pressor response but not the hypotensive effects of amylin. The peptide antagonist calcitonin gene-related peptide (CGRP)8–37 (12 nmol · kg–1· min–1) reduced the pressor response elicited by amylin and also antagonized the hypotensive effect of amylin. Pre-treatment of animals with the ganglion blocker mecamylamine (3 mg · kg–1 s. c.) reduced the pressor effect of amylin. Following the administration of the angiotensin converting enzyme inhibitor ramiprilat (300 nmol · kg–1 i. v.) the pressor response to amylin was reduced. Salmon calcitonin also elevated blood pressure in the anaesthetised rat; doses of amylin and salmon calcitonin associated with a pressor effect were associated with increases in plasma renin activity. We conclude that amylin may act centrally to elevate blood pressure in the anaesthetised rat, possibly through activation of the renin angiotensin system. [Diabetologia (1997) 40: 256–261]
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 21 (1977), S. 57-62 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Durch fraktionierte Dosen von insgesamt 6250 und 8000 rads einer Gammabestrahlung (25 bzw. 32 Teilbehandlungen zu 250 rads mit 4 h-Intervallen) wurden Puppen des Baumwollkapselkäfers, Anthonomus grandis Boheman, in beiden Geschlechtern sexuell sterilisiert. Die Sterblichkeit, 5 d nach der Behandlung, betrug bei den so behandelten Männchen bei 6250 rads 14%, bei 8000 rads 27% im Vergleich zu 46%, wenn eine äquivalente akute Dosis bei frisch geschlüpften Käfern angewendet wurde. Die Pheromonproduktion der Männchen in den ersten 4 d erreichte bei 6250 rads-Bestrahlung 1/3 derjenigen der Kontrolltiere; 5–11 d nach der Behandlung war kein Unterschied. Dieses Verfahren eignet sich für die Massensterilisation von Kapselkäfern, wie sie bei einem Ausrottungsprogramm nötig ist. Diese Technik ist anwendbar auf andere Insekten, die gegenüber akuten Dosen hochempfindlich sind.
    Notes: Abstract Fractionated doses of 6,250–8,000 rads of gamma irradiation when administered to pupae of the boll weevil, Anthonomus grandis Boh., sexually sterilized both sexes. Mortality of males thus treated with 6,250 and 8,000 rads via fractionation was 14% and 27% respectively, by 5 days posttreatment compared with 46% mortality when an equivalent acute dose was administered to newly emerged adults. Pheromone production of males irradiated at 6,250 rads was one-third that of the control for the first 4 days, but equal that of the control during 5–11 days posttreatment. This procedure lends itself to the large-scale sterilization of weevils needed in an eradication program. This technique is applicable to other insects that are highly susceptible to acute doses.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 257 (1979), S. 559-559 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-4889
    Keywords: SCALE FRACTURE ; OXIDE SCALES ; ALUMINA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The isothermal- and cyclic-oxidation behavior ofthermal barrier coating (TBC) systems consisting ofvacuum plasma-sprayed (VPS) Ni-22Cr-10Al-1Y (wt.%) bondcoatings and air plasma-sprayed (APS)Y2O3-stabilized ZrO2 (YSZ) top coatings (onsingle-crystal superalloys) was investigated. Themicrostructures, flaw contents, and fracture behavior ofthe Al2O3 scales formed duringoxidation testing at 1150°C were characterized (by analysis of coating andscale fracture surfaces and metallographic crosssections). Significant localized fracture and bucklingof the Al2O3 scales that formedalong the bond-coat-top-coat interfaces were observed after cyclic oxidationof TBCs. However, substantial amounts of localized scaledamage did not induce rapid TBC failure. Decohesion ofthe columnar alumina scales on the rough bond-coat surfaces occurred by both internalAl2O3 fracture (parallel to themetal surface) and oxide-metal delamination. There weremicrostructural indications ofAl2O3 scale crack healing bysintering into planar arrays of voids. Alumina scales that formed onconvex NiCrAlY surfaces (with radii of 50 μm or less)often contained significant amounts of internal voids(along grain boundaries) after cyclic oxidation, whereas scales formed by isothermal oxidationcontained few visible voids. Accelerated void growth inAl2O3 scales on the irregularNiCrAlY surfaces appeared to be creep-related and wasattributed to the synergistic effects of geometric and thermalstresses.
    Type of Medium: Electronic Resource
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