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  • Chemistry  (2)
  • 3-Cl-N-vinylcarbazole  (1)
  • Albumin  (1)
  • Chaco vegetation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Downregulation of hepatic albumin mRNA in response to induced hypercholesterolemia in rabbits
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 1128 (1992), S. 77-82 
    Details
    ISSN: 0005-2760
    Keywords: (Rabbit liver) ; Albumin ; Hypercholesterolemia ; mRNA
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2760(92)90260-3
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Vegetation changes along a precipitation gradient in Central Argentina (1993)
    Springer
    Plant ecology 109 (1993), S. 5-14 
    Details
    ISSN: 1573-5052
    Keywords: Chaco vegetation ; Humidity gradient ; Monte vegetation ; Physiognomic plant characters ; Vegetation structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Changes in vegetation along a precipitation gradient in Central Argentina were studied. Floristic samples were taken along an east-west transect of about 300 km. Correlation analysis between precipitation and ordination axes was used to provide an environmental interpretation of vegetation variability. Floristic analysis produced an ordination of plant communities from evergreen forests (precipitation 〉500 mm) to desert shrublands and therophyte communities (precipitation 〈200 mm). Results showed a trend of floristic and structural impoverishment towards the west. There is a replacement of species along the transect and a shift in dominant growth forms. The first ordination axis is significantly, negatively correlated with annual precipitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00149541
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  • 3
    Electronic Resource
    Electronic Resource
    Halogenated poly-(N-vinylcarbazoles): flexibility and viscometric constants (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 320-323 
    Details
    ISSN: 1435-1536
    Keywords: 3-Cl-N-vinylcarbazole ; 3-Br-N-vinylcarbazole ; monomericunitprojectionlength ; viscometricconstants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract N-vinylcarbazole, 3-Cl-N-vinylcarbazole, and 3-Br-N-vinylcarbazole were homopolymerized via radical polymerization. Several monodispersed samples of respective polymers were obtained by fractionation and their intrinsic viscosities were measured in tetrahydrofurane at 25°C. The viscometric constantsK anda, the monomeric unit projection length ℏ, and the flexibility parameter λ were determined using the gel permeation chromatography technique to determine the elution volumeVe and apply a newly derived relationship between the flexibility parameter and molecular weight. The presence of halogen atoms in the carbazole group of PNVC varies the value of ℏ and, consequently, the rigidity of the polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00654578
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  • 4
    Electronic Resource
    Electronic Resource
    1H-nmr studies on the structure of a new thionin from barley endosperm (1995)
    New York : Wiley-Blackwell
    Biopolymers 36 (1995), S. 751-763 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new thionin from barley, ω-hordothionin, has been shown to exist in aqueous solution as a mixture of two different isoforms in a 3:2 ratio, as revealed by a complete analysis of its two-dimensional 1H-nmr spectra. The conformational heterogeneity arises frtm cis-trans isomerism ahout the Phe 12-Pro 13 peptide bond, where the major, form corresponds to the cis conformation. The complete assignment of chemical shifts and nuclear Overhaiiser effects (NOES) of the two isoforms allow a detailed comparative analysis of their conformational properties, even though a complete calculation of their solution structures is not possible because of a somewhat limited number of NOE constraints. Structures for the two isomers could be modeled, however, on the basis of the high structural homology between ω-hordothionin and related γ-thionins, and under the conditions of satisfying all observed experimental data. The two isoforms adopt practically identical global folds and the structural changes imposed by cis-trans isomerization are confined to the region proximal to Pro 13. The cis-trans isomerism occurs in a conserved loop connecting the first β-strand of the triple-stranded antiparallel β-sheet and the α-helix. A comparative analysis of the sequences of this loop in the different thionins suggests that the cis-trans equilibrium about the X-Pro peptide bond depends on the size of the side chain of X (X = Gly in γ-thionins and Phe in ω-thionin). The structural homology of this new thionin with γ-thionins as well as with some scorpion toxins and insect defensins suggests that these proteins may share a common mode of functional activity. © 1995 John Wiley & Sons, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360360608
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Kenntniss der Parawolframate (1887)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 36 (1887), S. 44-56 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18870360104
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