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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 24 (1970), S. 135-158 
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
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    Baltimore : Periodicals Archive Online (PAO)
    Human Biology. 43:4 (1971:Dec.) 526 
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  • 3
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Protein fractions separated from the exines of species of Cruciferae and Gompositae can induce characteristic responses in stigma hair cells. Most notably, extracts from incompatible pollen will elicit a rejection reaction in stigma papillae, a reaction which leads ultimately to the deposition of ...
    Type of Medium: Electronic Resource
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  • 4
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    London : Periodicals Archive Online (PAO)
    RSA Journal. 122:5211 (1974:Feb.) 157 
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Mycopathologia 43 (1971), S. 297-307 
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Untersuchungen an zwei Stämmen vonS. parasitica haben gezeigt, daß diese Art, zusammen mit anderen Arten vonSaprolegnia, eine hohe Toleranz gegen Salinität hat, wenn das vegetative Wachstum allein in Betracht gezogen wird. Die Wirkung von Temperatur und Salinität an asexuellen Sporulation zeigt, daß bei Temperaturen bis zu 20°C eine gute Sporulation in einer Salinität von 3.5%. vorherrscht. Bei höheren Temperaturen wird Sporulation unterdrückt und bilden sich Gammae. Temperatur scheint eine bedeutende Wirkung an der initialen Germination von Zoosporen zu haben, jedoch ist diese Wirkung nach 12 Stunden minimal.
    Notes: Abstract Experiments on two strains ofS. parasitica have shown that this species together with other species ofSaprolegnia have a high tolerance to salinity when vegetative growth alone is considered. The effect of temperature and salinity on asexual sporulation shows that at temperatures of up to 20°C good sporulation occurs in salinities of 3.5%.. At temperatures above this, sporulation is repressed and gammae tend to be formed. Temperature appears to have a marked effect on the initial germination of zoospores, but after 12 hours this effect is minimized.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Earth, moon and planets 4 (1972), S. 103-112 
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Analysis of the gravity gradiometer developed by R. L. Forward and C. C. Bell at the Hughes Research Laboratories suggest than an accuracy, in the range 0.1 to 0.5 EU can be expected in a lunar orbiter application. This accuracy will allow gradient anomalies associated with mascons to be mapped with 1% accuracy and should reveal a great deal of new information about the lunar gravity field. The proposed experiment calls for putting such a gradiometer into a closely circular polar orbit at an average height of about 30 km above the lunar surface. This orbit allows the entire lunar surface to be covered in fourteen days, the gradiometer to be checked twice per revolution and results in successive passes above the lunar surface being spaced at about the resolution limit of about 30 km set both by the satellite altitude and instrumental integration time. Doppler tracking will be employed and the spacecraft will carry an electromagnetic altimeter. Gradient and altitude data from the far side of the Moon can be stored for replay when communication is re-established.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 225 (1970), S. 1066-1068 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We tested pollen from Gladiolus gandavensis Van Houtte cv. and Ambrosia trifida L. Earlier work showed that the relative thinness of the exine of gladiolus pollen facilitated the detection and localization of intine held proteins; Ambrosia (ragweed) pollen was selected for test because of its ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archiv der Mathematik 23 (1972), S. 319-323 
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Myoepithelzellen der Speicheldrüsen lassen sich bei der Katze — nicht jedoch bei Mensch und Hund — mittels der alkalischen Phosphatase-Reaktion darstellen. Der Nachweis für Adenosintriphosphatase fällt in diesen Zellen beim Menschen, nicht bei Katze und Hund, positiv aus. Elektronenmikroskopisch-cytochemisch zeigt sich, daß das Reaktionsprodukt der jeweiligen Methode bei der Katze und beim Menschen an den Plasmamembranen der Myoepithelzellen auftritt und zwar am regelmäßigsten und meistens am stärksten in der Nachbarschaft der Azinuszellen. Beim Hund fällt in der Ohrspeicheldrüse sowie den nicht-mukösen Acini der Glandulae submandibularis und sublingualis das Reaktionsprodukt der Adenosintriphosphatase-Reaktion an der Begrenzung der Azinuskanälchen und der Lumenoberfläche aus. Alkalische Phosphatase ist in der Glandula sublingualis in den Wänden der Kanälchen und an den Lumina lokalisiert. Diese bemerkenswerten Unterschiede zwischen den verschiedenen Tierarten zeigen, daß keine der verwendeten Methoden zur Universalmarkierung von Myoepithelzellen der Speicheldrüsen geeignet ist. Außerdem ist die Aktivität des Myoepithels bei den einzelnen Drüsen uneinheitlich. Dies legt die Vermutung nahe, daß man sich selbst bei Anwendung der richtigen Methode nicht darauf verlassen kann, alle in einem Gewebsschnitt vorhandenen Myoepithelzellen zu erfassen.
    Notes: Summary Salivary myoepithelial cells were demonstrated by alkaline-phosphatase techniques in cat, but not in man or dog, and by an adenosine-triphosphatase technique in man, but not in cat or dog. Electron-microscopical cytochemistry showed that the reaction product from the respective techniques in cat and man was associated with the myoepithelial plasma membrane and that it was most constant and usually strongest at the plasma membrane adjacent to the acinar cells. In the dog, the reaction product from the adenosine-triphosphatase technique was found lining the canaliculi and lumina of the acini of the parotid gland, and of the non-mucous acini of the submandibular and sublingual glands. Alkaline-phosphatase reaction product was found lining the canaliculi and lumina in the sublingual gland. These remarkable species differences indicate that neither technique can be regarded as a universal marker of salivary myoepithelial cells. Inconsistencies in activity were found within the myoepithelium of individual glands and suggest that even the appropriate technique may not be relied upon to demonstrate all the myoepithelial cells present in a tissue section.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 96 (1974), S. 305-317 
    ISSN: 1432-072X
    Keywords: Marine Fungi ; Ultrastructure ; Multilamellate Sporangial Wall ; Sagenogenetosome ; Zoospore Cleavage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphology and ultrastructure of aJaponochytrium sp. has been studied by light, scanning and transmission electron microscopy. The wall has been shown to be multilamellate and persistent. Stages in zoospore cleavage are described and sagenogenetosomes reported in mature sporangia.
    Type of Medium: Electronic Resource
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