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  • Chemistry  (332)
  • Wiley-Blackwell  (332)
  • American Association for the Advancement of Science (AAAS)
  • Cambridge University Press
  • Wiley
  • 1980-1984
  • 1970-1974  (332)
  • 1971  (332)
Sammlung
Schlagwörter
Verlag/Herausgeber
  • Wiley-Blackwell  (332)
  • American Association for the Advancement of Science (AAAS)
  • Cambridge University Press
  • Wiley
Erscheinungszeitraum
  • 1980-1984
  • 1970-1974  (332)
Jahr
  • 11
    Digitale Medien
    Digitale Medien
    Direkte Umwandlung von Benzol im zweiten angeregten Singulett-Zustand in Dewar-Benzol (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 803-804 
    Details
    ISSN: 0044-8249
    Schlagwort(e): Chemistry ; General Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/ange.19710832012
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  • 12
    Digitale Medien
    Digitale Medien
    Fluoreszenz und Fluoreszenz-Thermochromie von Kupfer(I)-Verbindungen (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 891-891 
    Details
    ISSN: 0044-8249
    Schlagwort(e): Chemistry ; General Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/ange.19710832219
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  • 13
    Digitale Medien
    Digitale Medien
    Stereospezifische Umwandlung von (-)-Tri-O-benzoyl-chinasäure-methylester in den entsprechenden Shikimisäureester (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 722-722 
    Details
    ISSN: 0044-8249
    Schlagwort(e): Chemistry ; General Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/ange.19710831708
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  • 14
    Digitale Medien
    Digitale Medien
    Kinetic and hydrodynamic studies of the complex of proflavine with poly A·poly U (1971)
    New York : Wiley-Blackwell
    Biopolymers 10 (1971), S. 465-480 
    Details
    ISSN: 0006-3525
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Relaxation kinetic experiments reveal general similarity between the mechanism of binding of proflavine to poly A·poly U and DNA. There are differences in detail, however. For example, the rate constants are roughly an order of magnitude smaller for the former, and the thermodynamic parameters of the individual steps are also different. The total heat and free energy for intercalation of free dye are quite similar in the two cases. As was the case with DNA, considerable dye (up to 25% of the bound form) is attached externally to the double helix, even in the strong binding region of the isotherm. Sedimentation measurements on small, rodlike fragments of poly A·poly U reveal a length increase on binding proflavine of a magnitude similar to that found with DNA. This length increase seems to become smaller under conditions (high temperature) where the relaxation measurements indicate a higher fraction of externally bound dye.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bip.360100304
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  • 15
    Digitale Medien
    Digitale Medien
    An experimental study of plasticating in a reciprocating-screw injection molding machine (1971)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 11 (1971), S. 353-360 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Experimental studies were performed with low density polyethylene, acrylonitrile-butadiene-styrene polymers and on polyvinyl chloride to elucidate the nature of the plasticating process in a reciprocating-screw injection molding machine. Melting data, obtained by use of the “cooling experiment,” and plastic temperature data reveal that the screw recharge process is a transient plasticating extrusion process which gradually approaches the equilibrium extrusion behavior as the screw rotates. If the screw rotation time is a high percentage of the total cycle time, the plasticating behavior is very similar to steady-state extrusion behavior, but if the screw rotation time is a small percentage of the total cycle time, the plasticating behavior is significantly different. Furthermore, better plasticating is obtained by use of a low RPM and high percentage rotation time than by a high RPM and low percentage rotation time.
    Zusätzliches Material: 19 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760110502
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  • 16
    Digitale Medien
    Digitale Medien
    Effects of corona treatment on composite formation. Adhesion between incompatible polymersNational Research Council of Canada, Issue NRCC No. 11779. (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 15 (1971), S. 129-143 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Polypropylene-nylon 6 10 composites were prepared by the in situ polymerization of the nylon monomers on polypropylene films. The adhesion between the nylon and the polypropylene was markedly improved by a brief corona discharge treatment of the films in nitrogen prior to coating. This improvement was demonstrated by an increase in the peel strength of the nylon coating and a decrease in brittleness of photo-oxidized compesites when corona treatment was used. Adhesive bonding between the nylon and substrate was sufficiently strong to cause cohesive failure in the corona-treated polypropylene. Only interfacial failure was observed at untreated surfaces. These effects were demonstrated by electron microscopy of the surfaces produced in peel tests. The effects of corona treatment on adhesive bonding characteristics of surfaces are discussed in terms of the chemical and physical changes observed in treated surfaces.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1971.070150112
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  • 17
    Digitale Medien
    Digitale Medien
    Diffusion in concentrated polystyrene solutions (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 15 (1971), S. 1553-1570 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: The wedge interferometer technique was used to measure the diffusion coefficients for concentrated solutions of polystyrene. A wide range of molecular weights, all monodisperse except for one, and 14 solvents were studied. Reproducibility of the data was demonstrated in the concentrated region, and good agreement with the sparse literature was observed. The experimental results are discussed and analyzed in terms of current knowledge and theories. In the concentrated region, the solvent type plays a significant role in determining the diffusion coefficient. Its effect cannot be explained simply in terms of hydrodynamics nor the molecular structure of the solvent. In cyclohexanone the diffusion coefficient was found to increase with polymer molecular weight up to 100,000 and to become independent thereafter.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1971.070150701
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  • 18
    Digitale Medien
    Digitale Medien
    Thermische, nichtkatalysierte Cycloadditionen der Acrylverbindungen an Cycloheptatrien (1971)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 54 (1971), S. 463-473 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The cycloaddition reactions of cycloheptatriene with acrylonitrile and methyl acrylate have been investigated in some detail. The exo (1) and endo (2) adducts resulting from the [2+2+2]-cycloaddition of acrylic components to the 2,5-positions of cycloheptatriene have been separated and the structures have been elucidated by NMR. The by-products are 7-endo-substitued derivatives of bicyclo[4,2,1]nona-2,4-diene (3), resulting from the formal [6+2]-cycloaddition to the 1,6-positions of cycloheptatriene. The mechanism of their formation is discussed.Irradiation (λ = 253,7 nm) of 3 in various solvents gave an almost quantitativ yield of [2+2]-cyclodimers of the 14 type. No intramolecular photocyclization of 3 to cyclobutenes 13a and/or 13b was observed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19710540205
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  • 19
    Digitale Medien
    Digitale Medien
    Flexural properties of equine metacarpus (1971)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 5 (1971), S. 63-79 
    Details
    ISSN: 0021-9304
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin , Technik allgemein
    Notizen: The flexural tests on 37 whole equine metacarpus bones are described and the results are given in terms of fundamental material properties as a function of age. The moduli of elasticity, rupture, and failure increase then decrease with increasing age. The rupture and failure deformations decrease with age. The stiffness and fragility indices increase with age. Averaging the data for all ages, the modulus of rupture was 35 ksi, the deflection at rupture was 0.22 inches, and the modulus of elasticity was 1.7 × 10 psi. The flexural rupture strength is about twice the uniaxial compression strength and about five times greater than the torsional strength for whole bone tests. The moduli of elasticity are about the same for flexure and uniaxial compression, and about five times greater than the torsional modulus of rigidity for whole equine bone.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbm.820050106
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  • 20
    Digitale Medien
    Digitale Medien
    In vitro performance of installed internal fixation plates in compression (1971)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 5 (1971), S. 389-405 
    Details
    ISSN: 0021-9304
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin , Technik allgemein
    Notizen: This paper deals with the performance of current designs of bone fixation plates, mountedon the anterior surface of fractued equine third metacarpale and tested in uniaxial compression. A full factorial experimental design on three variables, plate length, plate width, and fasterner size provided 27 different variations of the basic design. No replicate ests were conducted. All loads were normalized on mid-shaft done gemetry and compared to he ultimate compressive strength that could be expected of a similar bone of the same age. No capacities above 33% of the strength of an unfractured bone were observed.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jbm.820050409
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