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  • 1
    Electronic Resource
    Electronic Resource
    Aluminatschmelzzemente aus ungarischen Bauxiten (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 40 (1927), S. 1164-1167 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19270404204
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  • 2
    Electronic Resource
    Electronic Resource
    Rules of supermolecular structure formation in sheared isotactic polypropylene melts (1996)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 34 (1996), S. 657-670 
    Details
    ISSN: 0887-6266
    Keywords: α-polypropylene ; β-polypropylene ; crystallization ; cylindrite ; isotactic polypropylene ; melting ; nucleation ; quiescent melt ; sheared melt ; supermolecular structure ; thermo-optical study ; transcrystallization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Shear-induced crystallization of isotactic polypropylene (iPP) homo-, block, and random copolymers was studied and compared to that in quiescent melt. It was evidenced by means of the thermo-optical technique that melt-shearing, caused by fiber pulling, is associated with the development of α-row-nuclei. The surface of the in situ formed α-row-nuclei may induce the growth of the β-modification of iPP resulting in a cylindrite of polymorphous composition. The polymorphous composition is controlled by the temperature-dependent relative growth rate of the α- and β-iPP for which a model explanation was given. The β-nucleation ability of the α-row-nuclei is lost by melt-shearing at high temperature or remelting. This was attributed to a coverage of the β-nuclei by the α-phase. The structural memory of the supermolecular structures was studied in repeated melting and crystallization cycles and discussed. It was found that the quality of the fiber did not influence the mechanisms concluded. The shear-induced crystallization of propylene block copolymers was highly analogous to the homopolymers. In case of the random copolymers, however, crystallization in sheared melt resulted in an α-cylindritic structure, because for propylene random copolymers the growth rate of the α-modification is always higher than that of the β. It was also demonstrated that the mechanism of shear-induced crystallization was unaffected when the crystallizing PP melt contained selective β-nucleants. © 1996 John Wiley & Sons, Inc.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Prediction of IgE(Lb4)-ligand complex structures by automated docking (1996)
    Chicester [u.a.] : Wiley-Blackwell
    Journal of Molecular Recognition 9 (1996), S. 239-246 
    Details
    ISSN: 0952-3499
    Keywords: automated docking ; simulated annealing ; multispecific IgEs ; allergic cross-reactions ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: A mouse monoclonal anti-2,4,6-trinitrophenyl IgE (clone Lb4) was screened with a random set of over 2000 compounds, and several ligands were found to bind with affinities comparable to that of the immunizing hapten (KD in the μM range). An automated docking algorithm was used for the prediction of complex structures formed by 2,4-dinitrophenyl (DNP) and non-DNP ligands in the fragment variable region of IgE(Lb4). All ligands were found to dock in an L-shaped cavity of 15 × 16 × 10 Å, surrounded by complementary-determining regions L1, L3, H2 and H3. The ligands were found to occupy the same binding site in different orientations. For rigid ligands the most stable orientation could be predicted with high probability, based on the calculated energy of binding and the occurrence frequencies of identical complexes obtained by repeated simulations. The localization of a flexible ligand (cycrimine-R) was more ambiguous, but it still docked in the same site. The results support a model for heteroligating antibody (Ab) binding sites, where different ligands utilize the total set of available contacts in different combinations. It is suggested that although pseudoenergies calculated by the docking algorithm do not correlate with experimentally measured binding energies, the screening-and-docking procedure can be useful for the mapping of Ab and other receptor binding sites ligating small molecules.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 4
    Electronic Resource
    Electronic Resource
    Multispecific recognition of allergens by IgE antibodies (1995)
    Chicester [u.a.] : Wiley-Blackwell
    Journal of Molecular Recognition 8 (1995), S. 161-161 
    Details
    ISSN: 0952-3499
    Keywords: IgE antibodies ; multispecificity ; computer-aided molecular modeling ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmr.300080129
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  • 5
    Electronic Resource
    Electronic Resource
    The synthesis and investigation of thermostable soluble polybenzazoles (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 128-130 
    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: Poly(benzimidazole) und Poly(amidobenzimidazole) auf Basis unterschiedlicher Tetramine, Diphenylate von Dicarbonsäuren sowie ε-Caprolactam und Diaminen wurden untersucht. Für die Synthese wurden 3,3′-Diaminobenzidin oder aromatische Tetramine mit Methylen-, Sauerstoff- oder Sulfongruppen zwischen den Benzenringen eingesetzt. Die erhaltenen Polymere sind thermostabile, lösliche Produkte mit ausreichend hohen Molekülmassen.
    Notes: The poly(benzimidazole)s and poly(amidobenzimidazole)s produced on the base of different tetramines, diphenylate of dicarboxylic acids, and ε-caprolactam or diamines are investigated. In the synthesis were used 3,3′-diaminobenzidine or aromatic tetramines containing methylene, oxygen, or sulfon groups between the benzene cycles. The produced polymers are thermostable, soluble, and have high enough molecular weights.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420221
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis of new N,N′-bisimides for thermostable polymers (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 130-132 
    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: Neue N,N′-Bis-maleinimide wurden durch Kondensationsreaktion von mehrkernigen aromatischen Diaminen mit Maleinsäureanhydrid synthetisiert. Die erhaltenen N,N′-Bis-maleinimide sind kristalline, gelb gefärbte Verbindungen, die in Aceton, Dioxan, Amidlösungsmitteln sowie in organischen und anorganischen Säuren löslich sind. Ihre Struktur wurde durch Elementaranalyse, NMR- und IR-Spektroskopie identifiziert. Die N,N′-Bis-maleinimide wurden in Cresol-Lösung mit Diaminen zu Polymeren polykondensiert.
    Notes: New N,N′-bisimides were synthesized by condensation of polynuclear aromatic diamines with maleic anhydride. The obtained N,N′-bisimides are crystalline yellow-coloured compounds, soluble in acetone, dioxan, amidic solvents, organic and inorganic acids. Their structure was identified by elemental analysis, NMR and IR spectroscopy. The N,N′-bisimides were polycondensated with diamines in cresol solution to high polymers.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420222
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  • 7
    Electronic Resource
    Electronic Resource
    Untersuchungen über strahlenchemische polymerisation in fester phase. V.IV. Magyar Kémiai Folyóirat 70 (1964) 258. Die copolymerisation von N-vinylsuccinimid und N-vinylpyrrolidon in fester phase (copolymerisation in einem festen und unterkühlten, flüssigen eutektikum) (1965)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 85 (1965), S. 58-70 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The solid system of N-Vinylsuccinimide and N-Vinylpyrrolidone may be characterized by an eutectic point at a mole ratio of 3.4/6.6. The rate of the copolymerization in the eutectic system is higher than in mixtures characterized by any other different ratios of initial composition. The composition of the resulting copolymer is equal to that of the eutectic in each case. The composition of the copolymer formed in solid phase is dissimilar to the composition determined from the relative reactivities. Therefore this fact proves that the physical structure of the two-component solid system determines the structure of the resulting copolymer. The polymerization-rate of the mixture characterized by the eutectic composition in supercooled liquid phase is higher than in solid-state. The data of the resulting copolymer are between the data of the copolymers obtained in liquid state and in solid eutectic mixture.
    Notes: N-Vinylsuccinimid und N-Vinylpyrrolidon besitzen ein Eutetikum bei dem Molverhältnis 3,4/6,6. Beim Eutektikum ist die Copolymerisationsgeschwindigkeit größer als in Ausgangsgemischen, deren Zusammensetzung von der des Eutektikums abweicht. Die Zusammensetzung des entstandenen Copolymeren stimmt in jedem Fall mit der des Eutektikums überein. Die Zusammensetzung des in fester Phase entstandenen Copolymeren weicht von derjenigen ab, die der aus den relativen Reaktionsfähigkeiten bestimmten entsprechen würde. Dies beweist, daß die physikalische Struktur des festen Zweikomponentensystems die Zusammensetzung des entstandenen Copolymeren bestimmt. In unterkühlter, flüssiger Phase ist die Copolymerisationsgeschwindigkeit des Gemisches, dessen Zusammensetzung der des Eutektikums entspricht, noch größer als in fester Phase; die Zusammensetzung des entstandenen Copolymeren liegt zwischen derjenigen des in flüssiger Phase und der des im festen Eutektikum entstehenden Copolymeren.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1965.020850106
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  • 8
    Electronic Resource
    Electronic Resource
    Metal-containing coordination polymers. XI. Crystallization and melting behavior of a semicrystalline polyester and its Mg (II) complexes (1981)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 19 (1981), S. 703-717 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The effect of metal ion content and thermal history on the crystallization and melting behavior of a semicrystalline low-molecular-weight poly(butylene adipate) and its Mg complexes was studied by wide-angle x-ray diffractometry and differential scanning calorimetry. Both the polyester and the metal-containing derivatives are dimorphous, and a β to α transformation takes place as the annealing temperature is increased. The dependence of the degree of crystallinity on the thermal history is more pronounced at higher Mg contents because of the effect of metal ions on the rate of crystallization. Melting of specimens with nonequilibrium structure is accompanied by simultaneous recrystallization processes such as perfection of crystallites and transformation of the crystal forms. The rates of these processes decrease with increasing metal content. The crystallizability is also reduced in the presence of Mg. Above the stoichiometrically equivalent Mg content, an abrupt change in the percentage of crystallinity accompanied by a considerable alteration in the microstructure of the crystalline phase occurs.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1981.180190412
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  • 9
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    Paleomagnetic constraints on deformation of superfast-spread oceanic crust exposed at Pito Deep Rift (2011)
    Wiley-Blackwell
    Details
    Publication Date: 2011-12-13
    Description: The uppermost oceanic crust produced at the superfast spreading (∼142 km Ma−1, full-spreading rate) southern East Pacific Rise (EPR) during the Gauss Chron is exposed in a tectonic window along the northeastern wall of the Pito Deep Rift. Paleomagnetic analysis of fully oriented dike (62) and gabbro (5) samples from two adjacent study areas yield bootstrapped mean remanence directions of 38.9° ± 8.1°, −16.7° ± 15.6°, n = 23 (Area A) and 30.4° ± 8.0°, −25.1° ± 12.9°, n = 44 (Area B), both are significantly distinct from the Geocentric Axial Dipole expected direction at 23° S. Regional tectonics and outcrop-scale structural data combined with bootstrapped remanence directions constrain models that involve a sequence of three rotations that result in dikes restored to subvertical orientations related to (1) inward-tilting of crustal blocks during spreading (Area A = 11°, Area B = 22°), (2) clockwise, vertical-axis rotation of the Easter Microplate (A = 46°, B = 44°), and (3) block tilting at Pito Deep Rift (A = 21°, B = 10°). These data support a structural model for accretion at the southern EPR in which outcrop-scale faulting and block rotation accommodates spreading-related subaxial subsidence that is generally less than that observed in crust generated at a fast spreading rate exposed at Hess Deep Rift. These data also support previous estimates for the clockwise rotation of crust adjacent to the Easter Microplate. Dike sample natural remanent magnetization (NRM) has an arithmetic mean of 5.96 A/m ± 3.76, which suggests that they significantly contribute to observed magnetic anomalies from fast- to superfast-spread crust.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
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