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  • Springer  (22)
  • American Institute of Physics  (2)
  • American Institute of Physics (AIP)  (2)
  • 1985-1989  (26)
  • 1
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): influenza virus ; hemagglutinin ; glycoprotein glycans ; oligosaccharide structure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: 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.
    Materialart: Digitale Medien
    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
    Publikationsdatum: 1987-01-01
    Print ISSN: 0282-0080
    Digitale ISSN: 1573-4986
    Thema: Chemie und Pharmazie
    Publiziert von Springer
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  • 3
    Digitale Medien
    Digitale Medien
    Spectral characteristics of plasma emission during ArF excimer laser ablation of YBa2Cu3O7 (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 469-471 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: In order to characterize the laser ablation process as it relates to the deposition of high Tc superconducting thin films, optical emission spectra produced during ArF excimer laser ablation of the high Tc superconductor YBa2Cu3O7 were studied. The population of excited states within the gas phase blow-off material depends strongly on excimer laser fluence at 193 nm. Ablation using relatively low excimer laser fluences produces a significant fraction of YO in the gas phase. The plasmas derived from ablation of targets made from the high Tc material are similar to plasmas observed from ablation of the individual components BaCO3, CuO, and Y2O3.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.101555
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  • 4
    Digitale Medien
    Digitale Medien
    Spectra and structure of small ring compounds. XLVIII. Conformational stability of methylcyclobutane from low frequency Raman data of the gas (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 545-551 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: The low frequency (500–80 cm−1) Raman spectra of gaseous methylcyclobutane, c-C4H7CH3, and methyl-d3-cyclobutane have been recorded. A series of Q branches beginning at 161 cm−1 for the light molecule and 154 cm−1 for the d3 compound with successive transitions falling to lower frequencies have been assigned to the ring puckering vibrations of both the low energy equatorial and high energy axial conformers. These data have been fitted to an asymmetric potential function of the form: V(cm−1)=(4.78±0.10)×105X4−(3.08±0.04)×104X2 +(2.18±0.1)×104X3 with an assumed reduced mass of 160 amu for the light compound. Utilizing this potential the difference between the puckering angles for the two conformers was calculated to be 4.3° with the equatorial conformer having the larger value of 20.7°. A similar potential was obtained for the d3 molecule. The energy difference between the equatorial and axial forms was found to be 247±20 cm−1 (706 cal/mol) and a barrier of 641±20 cm−1 (1.83 kcal/mol) was found for the interconversion. Experimental values for the ΔH of both the liquid (354±179 cm−1) and gas (295±75 cm−1) from relative intensities of different Raman band pairs over 85 and 37 °C temperature ranges, respectively, were found to be consistent with the value obtained from the potential function. These results are compared to the corresponding quantities for similar molecules.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.452305
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  • 5
    Digitale Medien
    Digitale Medien
    CH Cygni in the transition to its cool phase (1985)
    Springer
    Astrophysics and space science 116 (1985), S. 355-365 
    Details
    ISSN: 1572-946X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00653790
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  • 6
    Digitale Medien
    Digitale Medien
    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
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00668143
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  • 7
    Digitale Medien
    Digitale Medien
    The heliometer principle and some modern applications (1985)
    Springer
    Astrophysics and space science 110 (1985), S. 183-192 
    Details
    ISSN: 1572-946X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00660628
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  • 8
    Digitale Medien
    Digitale Medien
    On stable fields in positive characteristic (1989)
    Springer
    Geometriae dedicata 29 (1989), S. 335-375 
    Details
    ISSN: 1572-9168
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00572450
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  • 9
    Digitale Medien
    Digitale Medien
    Rotational analysis of nitrosyl chloride (1988)
    Springer
    Microchimica acta 95 (1988), S. 429-431 
    Details
    ISSN: 1436-5073
    Schlagwort(e): nitrosyl chloride ; vibrational-rotational
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The vibrational-rotational spectra of the fundamentals of nitrosyl chloride have been recorded with a Fourier transform interferometer at an apodized resolution of 0.004 cm−1. The data have been analyzed to determine excited state molecular constants forv 1 v 2, andv 3.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01349802
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  • 10
    Digitale Medien
    Digitale Medien
    Nonlocal light-cone operators describing hadrons in processes with large momentum transfer (1987)
    Springer
    Czechoslovak journal of physics 37 (1987), S. 516-520 
    Details
    ISSN: 1572-9486
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The application of a special version of the nonlocal light-cone expansion to hadron processes with large momentum transfer is reviewed. The light-cone operators introduced in this approach may be considered as the relevant hadron operators: Their matrix elements between the vacuum and a one-hadron state coincide with the quark distribution amplitude, and their anomalous dimensions are unique extensions of the well known Brodsky-Lepage evolution kernels having also a simple relation to the Altarelli-Parisi kernels.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01599957
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