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  • Springer  (62)
  • American Geophysical Union  (13)
  • 2000-2004  (28)
  • 1985-1989  (22)
  • 1965-1969  (25)
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  • 1
    Electronic Resource
    Electronic Resource
    Carbohydrates of influenza virus. Structure of the oligosaccharides linked to asparagines 406 and 478 in the hemagglutinin of fowl plague virus, strain dutch (1987)
    Springer
    Glycoconjugate journal 4 (1987), S. 17-32 
    Details
    ISSN: 1573-4986
    Keywords: influenza virus ; hemagglutinin ; glycoprotein glycans ; oligosaccharide structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Fowl plague virus, strain Dutch, was metabolically labeled withd-[2-3H]mannose, or withd-[6-3H]glucosamine, and the small subunit (HA2; 0.8 mg in total) of the viral hemagglutinin was isolated by preparative sodium dodecylsulfate-polyacrylamide gel electrophoresis. After proteolytic digestion, the radioactive oligosaccharides were sequentially liberated from the glycopeptides by treatment with different endo-β-N-acetylglucosaminidases and with peptide:N-glycosidase or, finally, by hydrazinolysis. In this manner, four groups of glycans could be obtained by consecutive gel filtrations and were subfractionated by HPLC. The structures of the individual oligosaccharides were analyzed by micromethylation, by acetolysis or by digestion with exoglycosidases. The major species amongst the high mannose glycans at Ans-406 of the viral glycopolypeptide were found to be Manα1-2Manα1-3(Manα1-2Manα1-6)Manα1-6(Manα1-2Manα1-2Manα1-3)Manβ1-4GlcNacβ1-4GlcNAc and Manα1-3(Manα1-2Manα1-6)Manα1-6(Manα1-2Manα1-2Manα1-3)Manβ1-4GlcNAcβ1-4GlcNAc, while the complex glycans at Asn-478 are predominantly GlcNAcβ1-2Manα1-3(GlcNAcβ1-2Manα1-6)Manβ1-4GlcNAcβ1-4GlcNAc (lacking, in part, one of the outerN-acetylglucosamine residues) and GlcNAcβ1-2Manα1-3(Galβ1-4GlcNAcβ1-2Manα1-6)Manβ1-4GlcNAcβ1-4GlcNAc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048441
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  • 2
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    Carbohydrates of influenza virus. Structure of the oligosaccharides linked to asparagines 406 and 478 in the hemagglutinin of fowl plague virus, strain dutch (1987)
    Springer
    Details
    Publication Date: 1987-01-01
    Print ISSN: 0282-0080
    Electronic ISSN: 1573-4986
    Topics: Chemistry and Pharmacology
    Published by Springer
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    CH Cygni in the transition to its cool phase (1985)
    Springer
    Astrophysics and space science 116 (1985), S. 355-365 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract U, B, V-observations, supplemented by spectrophotometric measurements of the symbiotic variable CH Cyg in the years 1982 to 1984 show that the star has reached its ‘blue maximum phase’ of its recent outburst in the first half of 1984. From end of July, 1984 on the object underwent a considerable drop in brightness and an increase of its colour indices, and which indicates that it was on the way to its cool phase. Also the spectroscopic observations show that the ‘blue’ continuum still observed at the beginning of July, 1984 has disappeared in October–November, 1984 and the strong absorption features, typical for a M-type giant were re-appearing. A remarkable intensity increase of the emission features, especially those of the Balmer lines, took place within this time interval. The rapid flickering variations of CH Cyg had also reached the culmination amplitude in July, 1984. There seem to be three periodicities present in these flickering variations with cycle lengths of 7.7 min, 21 min, and 60 min. Though these observational findings would be consistent with the M-type blue subdwarf component binary model with mass flow from the M6-III giant to the companion, the genuine binary nature of CH Cyg could not be established beyond doubt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653790
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  • 4
    Electronic Resource
    Electronic Resource
    Atomic data relevant to line formation in strongly magnetized white dwarf stars (1987)
    Springer
    Astrophysics and space science 131 (1987), S. 595-599 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The discovery of magnetic field strengths in the range of 500 million Gauss in the objects Grw+70°8247 and PG1031+224 has given enormous impetus to investigations of magnetic white dwarf stars. We have determined intensities of Balmer transitions for B〉108 Gauss as a function of field and find strong oscillations of the transitions strengths, which are of importance to the quantitative analysis of the observed spectra and the interpretation of polarimetric measurements in these objects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00668143
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  • 5
    Electronic Resource
    Electronic Resource
    The heliometer principle and some modern applications (1985)
    Springer
    Astrophysics and space science 110 (1985), S. 183-192 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Beside some historical notes about the large Fraunhofer's heliometer used by Bessel and Argelander, some modern applications of the heliometer principle for the geometric and photometric autocalibration of detectors and the determination of absolute radial velocities with slitless field spectrographs are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00660628
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  • 6
    Electronic Resource
    Electronic Resource
    On stable fields in positive characteristic (1989)
    Springer
    Geometriae dedicata 29 (1989), S. 335-375 
    Details
    ISSN: 1572-9168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572450
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  • 7
    Electronic Resource
    Electronic Resource
    Measurement of the η production in proton-proton collisions with the COSY time-of-flight spectrometer (2003)
    Springer
    The European physical journal 16 (2003), S. 127-137 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 25.40.Ve Other reactions above meson production thresholds (energies 400 MeV) – 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) – 14.40.Aq π, K, and η mesons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The reaction pp → ppη was measured at excess energies of 15 and 41 MeV at an external target of the Jülich Cooler Synchrotron COSY with the time-of-flight spectrometer. About 25000 events were measured for the excess energy of 15 MeV and about 8000 for 41 MeV. Both protons of the process ppη were detected with an acceptance of nearly 100% and the η was reconstructed by the missing-mass technique. For both excess energies the angular distributions are found to be nearly isotropic. In the invariant-mass distributions strong deviations from the pure phase space distributions are seen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2002-10079-7
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  • 8
    Electronic Resource
    Electronic Resource
    Studien zur Benzotropolonbildung aus 3-Hydroxy-o-benzochinon (1967)
    Springer
    Monatshefte für Chemie 98 (1967), S. 852-873 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The formation of benzotropolone compounds from catechol and pyrogallol derivatives depends upon the type, size, and position of the substituents in the reactants. Electrophilic substituents can be installed only in the 5-position of pyrogallol without loosing the capability of forming benzotropolones. This behavior is explained by the symmetrical electronic structure of the anion acting as 1.3-dipole. Pyrogallols, substituted in the 4- and 6-position by either methyl-, ethyl- or phenyl-groups, yield benzotropolones with 3-methoxy-o-benzoquinone. Isopropyl- andtert. butyl-groups in the same positions hinder benzotropolone formation because of steric hindrance. It was attempted to clarify the effect of the factors on the reaction mechanism by analysis of mixtures of benzotropolones, formed by oxidative coupling of catechol derivatives with pyrogallol-derivatives. On account of deficient yields this could not be done.
    Notes: Zusammenfassung Die Benzotropolonbildung aus Brenzcatechin- und Pyrogallolderivaten hängt von Art, Größe und Stellung der Substituenten in den Reaktionspartnern ab. Nur in die 5-Stellung des Pyrogallols können elektrophile Substituenten eingebaut werden, ohne daß die Fähigkeit zur Benzotropolonbildung verlorengeht. Dieses Verhalten wird durch die Symmetrie der elektronischen Struktur des als 1,3-Dipol wirkenden Anions erklärt. In 4- und 6-Stellung durch Methyl-, Äthyl- und Phenylgruppen substituierte Pyrogallole liefern mit 3-Methoxy-o-benzochinon Benzotropolone; Isopropyl- undtert. Butylgruppen in den gleichen Positionen verhindern aus sterischen Gründen die Benzotropolonbildung. Es wird versucht, aus der Produktanalyse von Benzotropolongemischen, die durch oxydative Verknüpfung von Brenzcatechinderivaten mit Pyrogallolderivaten hervorgegangen sind, Einblick in die den Mechanismus bestimmenden Faktoren zu erhalten. Verbindliche Aussagen hierüber werden durch die mangelhaften Stoffbildungen unmöglich gemacht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901389
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  • 9
    Electronic Resource
    Electronic Resource
    Histochemie und Feinstruktur der Prosekretgranula in den Panethschen Zellen der Maus (1965)
    Springer
    Naturwissenschaften 52 (1965), S. 14-15 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00631541
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  • 10
    Electronic Resource
    Electronic Resource
    Zur faziellen Entwicklung des subbetischen Juras in Südspanien (1967)
    Springer
    International journal of earth sciences 56 (1967), S. 973-992 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract The facies development of the Jurassic in the subbetic realm of Spain shows many common features on the whole in spite of differences in detail. “Neritic limestone facies“ may be distinguished from “Nodular limestone facies“ and “Limestone-marl-facies“. This paper deals with the stratigraphie range of red nodular limestones and “Limonite Crusts“ as equivalents of the celtiberic “Boundary Oolites“. The occurrence ofNucleata, Pygope andPosidonia in the Subbetic is discussed. There are certain facies relations to the Jurassic of the adjacent celtiberic area and especially to the Jurassic of the Western and Southern Alps.
    Abstract: Résumé Les faciès dans le Jurassique subbétique montrent, malgré des différences dans les détails beaucoup de traits communs. Il faut cependant distinguer entre le « faciès des calcaires néritiques», le « faciès des calcaires noduleux» et le « faciès des marnes et calcaires». La distribution stratigraphique des calcaires noduleux rouges et des « croutes de limonite», qui représentent les équivalents des «oolites limitrophes» celtibériques, est discuté. On commente alors l'existence deNucleata, Pygope etPosidonia dans le Subbétique. On peut constater des relations plus ou moins nettes non seulement avec le Jurassique celtibérique, mais aussi, avant tout, avec le Jurassique alpin occidental et méridional.
    Notes: Zusammenfassung Die fazielle Entwicklung des subbetischen Juras weist trotz Differenzierung im einzelnen viele gemeinsame Züge auf. Grundsätzlich ist aber zwischen einer „Neritischen Kalk-Fazies“ einer „Knollenkalk-Fazies“ und einer „Kalk-MergelFazies“ zu unterscheiden. Auf die stratigraphische Verbreitung der Roten Knollenkalke und die „Limonitkrusten“ als Äquivalente der keltiberischen „Grenzoolithe“ wird näher eingegangen, das Auftreten vonNucleata, Pygope undPosidonia im subbetisehen Jura besprochen. Sowohl zum benachbarten keltiberischen Jura als auch zum west- und südalpinen Jura sind mehr oder weniger deutliche Beziehungen vorhanden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01848775
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