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  • 1
    Electronic Resource
    Electronic Resource
    Calculation of relaxation time in polyurethanes using additive group contributions (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 60 (1996), S. 1985-1993 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The method of additive properties was used to calculate the dynamic mechanical relaxation time for a series of polyurethanes. Calculations were also made of density and glass transition temperature. Group contributions for nine component groups were determined. With these group values, the densities of the 12 polymers used to determine the groups were calculated and found to agree with measured values within an average of 0.2%. Calculated glass transition temperatures also agreed with measured values within 0.2%. The relaxation time, defined as a parameter in the Havriliak-Negami equation, was shown to be correlated with the glass transition temperature, allowing relaxation time to also be expressed as an additive property. Calculated logarithms of relaxation times agree with measured values to within 7% over a range of relaxation times covering many decades. © 1996 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Use of porous ceramics to obliterate mastoid cavities (1973)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 7 (1973), S. 85-95 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The mastoid process of the temporal bone can become infected with possible serious complications. If the infection does not respond to antibiotics, the infected area must be surgically removed, with the result that a cavity is formed. This cavity must be obliterated before the soft tissues can be closed over the site.Many biological tissues have been used in attempts to obliterate the mastoid cavity. Fat grafts and diced cartilage have shown less than optimum success because of their tendency to suffer various degrees of resorption. The most popular obliterative technique has been the musculoplasty in which a flap is cut from the temporalis muscle and rotated into the cavity. This method shows a great deal of success, but is a difficult procedure to do since the flap must be provided with adequate vascularity and must be cut to exactly the correct length. Hence this procedure works best for otologic surgeons who have had a great deal of experience in this method.Various forms of ceramics (either impervious spheres or porous pieces) have been used to obliterate the surgically produced cavity in the feline tympanic bulla. This bulla is a common model for the human mastoid. Since the ceramics must only fill the cavity and no stress is involved in this application, the brittle nature of ceramics is not a factor in their usefulness.The ceramics are held in place well by the ingrowing soft tissue and hence obliterate the cavity. Porous pieces of alumina seem to be best from the point of view of rapid tissue ingrowth holding them in place faster than the impervious spheres which require tissue to grow around them.The use of bioceramics to obliterate mastoid cavities would lead to an obliterative procedure in which an otologic surgeon would only have to excavate the infected cavity, fill it with ceramics, and close the site. He would not have to be involved with the tricky business of tailoring muscle flaps or obtaining homologous or autologous tissue.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820070307
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  • 3
    Electronic Resource
    Electronic Resource
    Carbon-13 NMR investigation of some substituted 1,3-thiazolidin-4-ones (1993)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 31 (1993), S. 348-351 
    Details
    ISSN: 0749-1581
    Keywords: 2,3-Diaryl-1,3-thiazolidin-4-ones ; 1-Oxides ; 1,1-Dioxides ; 3-Benzyl-2-phenyl-1,3-thiazolidin-4-one ; 3-Butyl-2-phenyl-1,3-thiazolidin-4-one ; 2,3-Diphenyl-5-methyl-1,3-thiazolidin-4-one ; 13C NMR ; Chemical shift variations ; Relaxation times ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 13C NMR spectra of a series of 2,3-diaryl-1,3-thiazolidin-4-ones were measured and the resonance signals produced by the methylene, methine and carbonyl groups of the heterocyclic ring assigned. The variations in their chemical shifts were examined and the influence of S-oxidation was investigated. 3-Benzyl-2-phenyl-1,3-thiazolidin-4-one, 3-butyl-2-phenyl-1,3-thiazolidin-4-one and 2,3-diphenyl-5-methyl-1,3-thiazolidin-4-one were also examined, the last compound being shown to exist as a mixture of isomers. T1 relaxation times were determined for three thiazolidinones and related to structural effects.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260310407
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  • 4
    Electronic Resource
    Electronic Resource
    Proton NMR investigation of some substituted 1,3-thiazolidin-4-ones (1992)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 30 (1992), S. 1075-1078 
    Details
    ISSN: 0749-1581
    Keywords: 2,3-Diaryl-1,3-thiazolidin-4-ones ; 1-Oxides ; 1,1-Dioxides ; 3-Benzyl-2-phenyl-1,3-thiazolidin-4-one ; 3-Butyl-2-phenyl-1,3-thiazolidin-4-one ; 1H NMR ; Chemical shift variations ; Coupling constant variations ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 1H NMR spectra of a series of 2,3-diaryl-1,3-thiazolidin-4-ones were measured and the ABX systems due to the heterocyclic ring protons were formally analysed. The chemical shifts and coupling constants were examined in relation to the structures concerned. The effects of S-oxidation of these compounds on the spectral parameters were investigated. The 1H chemical shifts of 3-benzyl-2-phenyl-1,3-thiazolidin-4-one and 3-butyl-2-phenyl-1,3-thiazolidin-4-one suggested the presence of a preferred conformation about the N—CH2 bond.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260301109
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  • 5
    Electronic Resource
    Electronic Resource
    Explosion in vessels: Recent results. New data on explosions in closed and vented vessels provide valuable tools for loss-prevention engineers (1983)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 2 (1983), S. 84-89 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720020205
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  • 6
    Electronic Resource
    Electronic Resource
    Analysis of combustion in closed or vented rooms and vessels (1984)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 3 (1984), S. 239-247 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720030410
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  • 7
    Electronic Resource
    Electronic Resource
    Pressure development in closed and vented vessels (1982)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 1 (1982), S. 75-85 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720010203
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  • 8
    Electronic Resource
    Electronic Resource
    Bemerkung zu der Arbeit von Hans Ruhkopf: Über einige neue Abkömmlinge des Cyclotetramethylen-pyrazols usw (1937)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 70 (1937), S. 1835-1835 
    Details
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19370700834
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