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  • Polymer and Materials Science  (7)
  • cDNA cloning  (2)
  • 4-Pyridoxic acid  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The constituents of storage granules in the dermal glands of Xenopus laevis Structure of a basic polypeptide deduced from cloned cDNA
    Amsterdam : Elsevier
    FEBS Letters 249 (1989), S. 293-296 
    Details
    ISSN: 0014-5793
    Keywords: (Amphibian skin, Secretory gland) ; Amino acid sequence ; Nucleotide sequence ; cDNA cloning
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(89)80644-1
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dermal glands of Xenopus laevis contain a polypeptide with a highly repetitive amino acid sequence
    Amsterdam : Elsevier
    FEBS Letters 260 (1990), S. 145-148 
    Details
    ISSN: 0014-5793
    Keywords: Amino acid sequence ; Amphibian skin ; Nucleotide sequence ; Secretory gland ; cDNA cloning
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(90)80088-Z
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Beziehungen zwischen der Vitamin B6-Versorgung Schwangerer und der Vitamin B6-Ausstattung ihrer Neugeborenen (1973)
    Springer
    European journal of pediatrics 115 (1973), S. 163-174 
    Details
    ISSN: 1432-1076
    Keywords: Pregnancy ; Vitamin B6 deficiency ; Erythrocyte GOT ; 4-Pyridoxic acid ; Vitamin B6 status ; Birth weight
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 95 Schwangere erhielten im letzten Schwangerschaftstrimenon zusätzlich zur üblichen Kost eine kontrollierte Vitamin B6-Zufuhr. Von jeder Schwangeren wurde zur Zeit der Aufnahme in die Studie und zum Zeitpunkt der Entbindung der Vitamin B6-Status an Hand der Aktivitätsmessung der erythrocytären GOT (EGOT) bestimmt. Während des letzten Schwangerschaftstrimenons lagen deutliche Zeichen eines biochemischen Vitamin B6-Mangels vor. Bei fehlender zusätzlicher Pyridoxinzufuhr nahm das Defizit signifikant zu, Verabreichung von täglich 3 mg Vitamin B6 hingegen normalisierte die defizitären Enzymwerte. Bei den Neugeborenen wurde kurz nach der Geburt die Vitamin B6-Versorgung an Hand der EGOT, am. 3. und 5. Lebenstag zusätzlich durch die Messung der Harnausscheidung von 4-Pyridoxinsäure untersucht. Zwischen der Vitamin B6-Versorgung der Schwangeren und der des Neugeborenen zeigten sich sowohl kurz nach der Geburt als auch am. 3. und 5. Lebenstag signifikante Abhängigkeiten. Die Retention von einer am 4. Lebenstag parenteral verabreichten Dosis Vitamin B6 war ebenfalls signifikant abhängig von der Vitamin B6-Versorgungslage der Mutter. Eine weitere Beziehung bestand zwischen Geburtsgewicht und Vitamin B6-Versorgung der Schwangeren. Die Geburtsgewichte der Neugeborenen, deren Mütter Vitamin B6 zusätzlich erhalten hatten, waren signifikant höher als die der Vergleichsgruppe.
    Notes: Abstract The activity of erythrocyte GOT (EGOT) with and without in vitro repletion with pyridoxal phosphate was determined in 95 pregnant women between the 22nd and 30th week of pregnancy. Following controlled vitamin B6 (P) supplementation, the activity of this enzyme was determined again within 1 hr after delivery. During the last trimester of pregnancy significant P deficiency could be detected. Biochemical deficiency increased in pregnant women not receiving supplementary P. The activity of EGOT was determined in newborn intants sub partu; excretion of 4-pyridoxic acid was measured on the third and fifth day post partum. Significant correlations were found between the P status of the mother and the P nutriture of her newborn infant sub partu and on the third and fifth post partum day. There was also a correlation between P retention after a P load on the fourth post partum day and the P status of mother. Newborn infants of mothers supplemented with P had a significantly higher birth weight than those of the control group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440541
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  • 4
    Electronic Resource
    Electronic Resource
    Delivery of gonadotropin releasing hormone from polymer solutions - influence of viscosity (1985)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 9 (1985), S. 163-168 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1985.020091985123
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamics of non-uniform expanded polymer chains in dilute solutions (1982)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 291-296 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Im Rahmen der BIXON-ZWANZIG-Theorie wird die Dynamißk von Polymerlösungen unter Berücksichtigung voi hydrodynamischen and excluded-volume-Wechselwirkungen konsistent behandelt. Die Ergebnisse bestätigen die wesentlichsten Eigenschaften des “blob” -Bildes, d. h. den Einfluß der nicht-uniformen Ausdehnung der Kette auf die Relaxationszeiten und die Intrinsic-Viskosität, unterscheiden sich im Detail jedoch von den Ergebnissen von DAUD und JANNINK sowie WEILL und DES CLOIZEAUX. Entgegen den Voraussagen wird ein zweites Plateau in [η(ω)] nicht beobachtet.
    Notes: The dynamics of polymer solutions are consistently treated by the BIXON-ZWANZIG theory including both hydrodynamic and excluded volume interactions. The results confirm generally the essential features of the “blob” picture in polymer dynamics, i.e. the influence of non-uniform chain expansion on the relaxation time spectra and the intrinsic viscosity, but differs in detail from results by DAOUD and JANNINK and WEILL and DES CLOIZEAUX. Especially no second plateau in [η(ω)] is observed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1982.010330501
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrasonic attenuation of polymer solutions. I. Dilute solutions (1985)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 36 (1985), S. 652-654 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Ultraschalldämpfung in einer verdünnten Polymerlösung wird im Rahmen der Kirkwoodschen Diffusionsgleichung untersucht. Eine Frequenzabhängigkeit vom Rouse-Zimm-Typ und eine Relation zwischen Scher- und Volumenviskosität werden erhalten.
    Notes: The ultrasonic attenuation in dilute polymer solutions is treated in the framework of the Kirkwood diffusion equation. A Rouse-Zimm type relaxation behaviour of the ultrasonic attenuation results from the calculations, and a relationship between the intrinsic shear and bulk viscosity is derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1985.010361203
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  • 7
    Electronic Resource
    Electronic Resource
    Ultrasonic attenuation of polymer solutions. II. Concentrated solutionsPart 1: [1] (1986)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 226-229 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Im Rahmen des Edwards-Grant-Modells wird die Ultraschalldämpfung in konzentrierten Polymerlösungen untersucht. Verschlaufungen der Ketten ändern die Frequenzabhängigkeit der Ultraschalldämpfung von ∼ω-1/2zu∼ω-3/4.
    Notes: In the framework of the Edwards-Grant model, the ultrasonic attenuation of concentrated polymer solutions is calculated. Entanglements between the chains change the frequency behaviour of the ultrasonic attenuation from ∼ω-1/2zu∼ω-3/4
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1986.010370411
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  • 8
    Electronic Resource
    Electronic Resource
    Dynamisches Verhalten verdünnter Polymerlösungen (1981)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 32 (1981), S. 92-97 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The optimized ROUSE-ZIMM-theory by BIXON and ZWANZIG is used to derive consistently viscoelastic relaxation times of chain models including the hydrodynamic interaction and excluded volume. The intrinsic viscosity is calculated on the basis of these relaxation time spectra.
    Notes: Auf der Basis des von BIXON und ZWANZIG begründeten optimierten ROUSE-ZIMM-Modells werden viskoelastische Relaxationszeiten für Modellketten unter Berücksichtigung des excluded-volume-Effecktes und der hydrodynamischen Wechselwirkung in konsistenter Weise berechnet. Die Eigenviskosität wird auf der Grundlage der Relaxationszeit-spektren berechnet.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1981.010320205
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  • 9
    Electronic Resource
    Electronic Resource
    Gel permeation chromatograms: Approximate relation of line shape to polymer polydispersity (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 3643-3648 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Characteristics of gel permeation chromatograms are investigated for three molecular distribution functions assuming a linear relation between elution volume and the logarithm of solute molecular weight. The average molecular weight, Mgpc, determined by the peak position of a chromatogram lies between the Mw and Mn for a polydisperse polymer.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1965.100031026
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  • 10
    Electronic Resource
    Electronic Resource
    Polydisperse polymers with random trifunctional branching. II. Weight-averaging of chosen molecular size-dependent functions and a restatement of the approximate distribution function (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 4227-4234 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The product gzbZa is weight-averaged over the distribution of molecular species in a polydisperse polymer possessing randomly distributed trifunctional branch points. This permits comparison between branched and nonbranched polydisperse polymers of certain physical properties that depend upon the relative degree of polymerization, z, and upon the ratio of branched to nonbranched molecule mean-square radii, g = Rbr2/Rl2. Values of a, b, and γ (a branching index) are chosen for specific physical reasons and the computed ratios, \documentclass{article}\pagestyle{empty}\begin{document}$ (1 - \gamma )^a \int_0^\infty {g_z ^b z^a } W_z dz/\int_0^\infty {z^{a + 1} e^{ - z} dz} $\end{document} are tabulated. The distribution function for the polydisperse polymer possessing randomly distributed trifunctional branch points is restated in terms of a modified Bessel function of the first kind. This form is of use since properties of the Bessel function are known and the tabulated values of this function are generally available.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1965.100031218
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