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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 19 (1974), S. 117-138 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    International organization 28 (1974), S. 435-466 
    ISSN: 0020-8183
    Source: Cambridge Journals Digital Archives
    Topics: Political Science
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 29 (1973), S. 2160-2163 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für angewandte Mathematik und Physik 23 (1972), S. 338-340 
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 252 (1974), S. 173-175 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Nu/Nu lymphocytes (B cells) sensitised with RAMB (T-cell-associated antigen). Cells were 5?7 mm in diameter and relatively homogeneous with a smooth surface. Usually 10?20 basal pseudopodial attachments and 50?100 micro-stubs covering the remaining surface could be visualised after ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 216 (1973), S. 23-32 
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Rasterelektronenmikroskopische Untersuchungen am normalen cervicalen Drüsenfeld des Uterus von 5 Frauen im Alter zwischen 34–42 Jahren ergeben neben den bekannten plicae palmatae eine Dreiteilung des Oberflächenreliefs im Cervixkanal: einen zottenreichen portionahen einen kraterähnlichen intermediären einen strukturarmen isthmusnahen Abschnitt. Die Drüsenzellen sind entweder in einem sekretorischen Ruhezustand oder in der Phase der Sekretbildung bzw. -ausschleusung. Ein morphologisch faßbarer cervicaler Cyclus besteht nicht. Dagegen nimmt die sekretorische Aktivität von der Portio zum Isthmus hin in Übereinstimmung mit früheren eigenen Untersuchungen ab.
    Notes: Summary Scanning electron microscopical investigations on the normal glandular area of the Cervix uteri were performed. 5 uteri, ranging between the 34th and the 42th year of life were examined. These investigations yield, beside the already known plicae palmatae, a treble subdivision of the surface structure of the cervical canal: The upper cervical canal, rich in villons structures the intermediary portion, rich in crater-like structures the lower cervical canal, which is structurally less differentiated. The glandular cells are either in a state of secretory activity or of no secretory activity at all. There is no morphologically definable cervical cycle. Secretory activity, however, decreases from the upper cervical canal to the lower cervical canal. This is in accordance with former investigations of ours.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 42 (1973), S. 319-330 
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary The variational theorem according to Reissner for the circular cylindrical shell is reduced to an extensive system of 1st order ordinary differential equations by polynomials of 2nd order, defined for finite strips only. Neglecting transverse shear deformation, the differential equations are decreased in number. The general solution is found in form of exponential functions. Results are given for an open shell which is rigidly clamped at one edge and free of forces at the other edges. Three cases of temperature distribution are considered. For one case the numerical results are compared with those according to a more accurate theory, for another case with experimental values.
    Notes: Übersicht Mit Hilfe quadratischer Parabeln als lokale Ansatzfunktionen wird das Reissnersche Variationsprinzip für die Kreiszylinderschale in ein umfangreiches System gewöhnlicher Differentialgleichungen 1. Ordnung überführt. Durch die Vernachlässigung der Querkraftverformung verringert sich die Anzahl dieser Gleichungen. Die allgemeine Lösung wird in Form von Exponentialfunktionen angegeben. Für eine an einem Rand eingespannte, an den drei übrigen Rändern kräftefreie offene Schale wird der Spannungszustand für drei Temperaturfälle berechnet. Die Ergebnisse werden in einem Fall mit denen nach der genaueren Theorie, in einem weiteren Fall mit Meßwerten verglichen.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-4927
    Keywords: Neurospora crassa ; cytochromes ; mitochondria ; respiration ; isoleucinevaline biosynthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Several of the isoleucine-valine requiring mutants of Neurospora crassa have been shown to have differences in growth rate, oxygen uptake rate, cyanide sensitivity, and cytochrome spectral patterns as compared to wild type. This pleiotropic effect seems to be true for mutants with changes at all three known loci affecting isoleucine and valine biosynthesis, the iv-1, iv-2, and iv-3 loci.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 4 (1970), S. 243-251 
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The isoleucine-valine requiring mutants of Neurospora crassa which map at the iv-1 locus lack, or have a very low level of activity for, the enzyme dihydroxy acid dehydratase in the mitochondrial fractions derived from them. This enzyme is, however, present in the soluble fractions of the mutant homogenates. The enzyme is present in both mitochondrial and soluble fractions from homogenates of wild-type and from homogenates of iv mutants blocked at other steps in the isoleucine-valine pathway.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 5 (1971), S. 549-561 
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Mitochondrial isoleucine-valine biosynthesis in strain 330a, an iv-1 mutant of Neurospora, is blocked at the dihydroxy acid dehydration step owing to a mutation in the nuclear structural gene for the specific enzyme dihydroxy acid dehydratase. Dehydratase purified from either the soluble or the mitochondrial fraction of wild-type Neurospora, and incubated in vitro with 330a mitochondria, restores valine synthesis from pyruvate-C 14 to wild type levels. Up to 29% of the restored synthesis could be attributed to the penetration of enzyme into the mitochondria. However, the bulk of the restored synthesis was found to be mediated via the secretion of dihydroxyvaline (DHV) by the mitochondria into the assay milieu, with subsequent enzymatic catalysis of this metabolite to ketovaline occurring outside the organelle. The ketovaline apparently diffuses back into mitochondria for final transamination to valine. This shunting of valine precursors in and out of mitochondria has been demonstrated to be the mechanism whereby two different populations of mitochondria isolated from mutants 330a and 305A (an iv-2 mutant lacking a functional reductoisomerase) can complement each other for the biosynthesis of valine, even when each population is enclosed in a separate dialysis bag. This observation provides the basis for a biochemical understanding of the growth complementation at the organismic level when these two iv-requiring mutants are cultured together in minimal medium.
    Type of Medium: Electronic Resource
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