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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 100 (1974), S. 253-270 
    ISSN: 1432-072X
    Keywords: Phycobiliproteins ; Rhodophyceae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung 1. Die Zusammensetzung des Phycobiliproteidgehalts der einzelligen marinen Rotalge Rhodella violacea wurde untersucht. 2. Eine Methode zur Massenanzucht der Alge wird vorgestellt. 3. Die Isolierung und Reinigung der Phycobiliproteide aus Rohextrakten im Anschluß an die Ultraschallfraktionierung der Zellen erfolgte durch Gel- und Ionenaustauschchromatographie. 4. Das Vorkommen von B-Phycoerythrin, C-Phycocyanin und Allophycocyanin konnte für Rhodella violacea nachgewiesen werden. 5. Der hohe Reinheitsgrad der isolierten nativen Phycobiliproteide erlaubte ihre Charakterisierung durch Spektraldaten (Absorptionsspektren, Extinktionsverhältnisse und Fluorescenz-Emissionsspektren) und durch Bestimmung ihrer Molekulargewichte und isoelektrischen Punkte; die letzteren wurden mit 4,39, 4,46 und 4,79 für B-Phycoerythrin I, C-Phycocyanin bzw. Allophycocyanin ermittelt. 6. Die Phycobiliproteidkomposition unterscheidet Rhodella violacea deutlich von den Arten der Gattung Porphyridium und unterstützt damit die kürzlich vorgeschlagene Trennung von dieser Gattung.
    Notes: Abstract The phycobiliproteins of the unicellular marine red alga, Rhodella violacea, were investigated. A method of mass culture of the alga is presented. B-phycoerythrin, C-phycocyanin, and allophycocyanin were isolated from crude extracts by the combination of gel and ion exchange chromatography. The highly purified native phycobiliproteins were characterized by absorption spectra, absorption ratios, and fluorescence emission spectra, molecular weights, and isoelectric points. The latter were found to be 4.39, 4.46, and 4.79 for B-phycoerythrin I, C-phycocyanin, and allophycocyanin, respectively. The phycobiliprotein composition clearly distinguishes Rhodella violacea from Porphyridium aerugineum and P. cruentum, thus, supporting the separation of Rhodella violacea from the genus Porphyridium recently proposed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 250 (1974), S. 148-150 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Swiss Webster mice 28 d old were given lead orally (1,375, 137.5 or 13.75 p.p.m.) as lead acetate in deionised water for 56 d. The controls were given deionised water. There were 120 mice in each group. The diet fed to all the mice was contaminated with 1.12 p.p.m. lead9. After 56 d, all the mice ...
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 244 (1971), S. 258-259 
    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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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 379-381 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Materials and structures 6 (1973), S. 277-281 
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Résumé Cet article décrit la confection de nouvelles éprouvettes cylindriques creuses de pâte de ciment pour les essais de fluage à humidité variable et, éventuellement, à température variable. L'épaisseur des parois n'est que de 0.75 mm, de sorte que l'équilibre des humidités à l'intérieur de l'éprouvette soit atteint suffisamment vite (en moins d'un jour) après une modification des conditions d'ambiance. Dans des conditions programmées d'humidité et de température ambiante lentement variable, l'éprouvette reste ainsi dans un état presque uniforme et de quasi équilibre, et l'on peut alors observer directement les propriétés du matériau à température et humidité variable. Le moule de confection des éprouvettes (dont le rapport eau/ciment est d'environ 0,45) est en téflon, ce qui assure une faible adhérence. Etant donné que le moulage s'accompagne de pressions élevées, le téflon est renforcé par de l'aluminium. La pâte de ciment est malaxée sous vide. Le démoulage (24 heures après) s'accomplit en eau glacée, par retrait thermique différentiel; le moule a été conçu de sorte que le refroidissement provoque une extension du diamètre externe du moule, tandis que le diamètre du mandrin intérieur se rétracte. Afin d'éviter la carbonatation, l'éprouvette est conservée dans de l'eau de chaux et les essais réalisés en atmosphère exempte de CO2. On présente quelques résultats d'essais préliminaires.
    Notes: Abstract Production of cement paste cylindrical specimens developed for creep tests at variable humidities and/or temperatures is described. The wall thickness is only 0.75 mm, which is required so that an equilibrium humidity distribution can be achieved in a short time with the result that the material parameters may be obtained directly by experiment.
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  • 6
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die beiden Annahmen, dass sich bei Thoraxkompression die Verminderung der Impulssequenz der Lungendehnungsrezeptoren analog zum Lungenentdehnungsreflex auswirke, und dass sich dessen inspiratorische Atmungseffekte zu jenen des Lungenkollapsreflexes addieren, erscheinen gerechtfertigt. Diese Annahmen ermöglichen eine quantitative Differenzierung zwischen dem respiratorischen Einfluss der Lungendehnungs-und Lungenkollapsrezeptoren bei Thoraxkompression. Damit können die auf die Erregung der Lungenkollapsrezeptoren zu beziehenden Atmungsveränderungen (Δf,ΔI/E) erstmals isoliert und quantitativ dargestellt werden.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 58 (1971), S. 339-344 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 22 (1971), S. 396-398 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Girardeau's Hamiltonian is used to develop the separated pair theory. The method does not involve the strong orthogonality condition.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 260 (1972), S. 31-31 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 174 (1973), S. 243-245 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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