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  • 1985-1989  (7)
  • 1900-1904
  • Polymer and Materials Science  (5)
  • ranitidine  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Effect of terfenadine and ranitidine on histamine and suxamethonium wheals (1988)
    Springer
    European journal of clinical pharmacology 34 (1988), S. 591-594 
    Details
    ISSN: 1432-1041
    Keywords: terfenadine ; ranitidine ; antihistamines ; histamine-/suxamethonium wheal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effects of the H-1 receptor blocker terfenadine and the H-2 receptor blocker ranitidine have been experimentally tested in wheals induced with histamine and suxamethonium chloride. Ranitidine alone in the standard and a four-fold higher dose did not notably reduce the size of the wheal and flare as compared to placebo. As expected, both parameters were markedly reduced by the H-1 antihistamine terfenadine in full and half-dosage. A combination of the two drugs both in “standard” and modified dosage resulted in the greatest reduction in the wheal and flare. Histamine and suxamethonium-induced wheals reacted in a similar manner to the antihistamines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615222
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Treatment of chronic urticaria with terfenadine and ranitidine (1986)
    Springer
    European journal of clinical pharmacology 31 (1986), S. 277-280 
    Details
    ISSN: 1432-1041
    Keywords: urticaria ; terfenadine ; ranitidine ; randomized double-blind study ; therapeutic response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary 45 patients with chronic urticaria were randomized to double blind therapy with terfenadine an H1-antihistamine or ranitidine, an H2-antihistamine, or a combination of both drugs. The therapeutic response was assessed by diary scores. The primary effect variable was “itching”. The inference-statistical evaluation of the patient scores showed varying therapeutic effects. The Type-I error wasp=0.015. Itching was reported to be significantly lower by patients receiving both drugs than by those who were given terfenadine alone, while ranitidine in monotherapy had no significant effect on itching. A similar trend was seen in assessment of the severity of weals, while the treatment regimens had no influence on swelling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00981123
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Thermotropic polyester amide-carbon fiber composites (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 965-977 
    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: Liquid crystal polymers (LCP) have been developed for the first time as a thermoplastic matrix for high-performance composites. A successful melt impregnation method has been developed that results in the production of continuous carbon fiber (CF)-reinforced LCP prepreg tape. Subsequent layup and molding of prepreg into laminates has yielded composites of good quality.Tensile and flexural properties of LCP-CF composites are comparable to those of epoxy-CF composites. LCP-CF composites have better impact resistance than the latter, although epoxy-CF composites possess superior compression and shear strength. LCP-CF composites have good property retention until 200°F (67% of room temperature value). Above 200°F, mechanical properties are found to decrease significantly. Experimental results indicate that the poor compression and shear strength may be due to the poor interfacial adhesion between the matrix and carbon fiber.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070310402
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  • 4
    Electronic Resource
    Electronic Resource
    Thermotropic polyester amide-carbon fiber composites (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 32 (1986), S. 5245-5245 
    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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070320538
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Alkyllithium-initiated polymerization of butadiene in presence of a bi-1,3-dioxane derivative (1989)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 15 (1989), S. 31-37 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Some results are reported on the alkyllithium-initiated polymerization of butadiene in cyclopentane in presence of 2,′2-bis(4,4,6-trimethyl-1,3-dioxane). The effect of this lithium chelating agent on one-unit model active centres is also reported. Comparisons are made with another highly efficient polymer structure modifier, 1,2-dipiperidinoethane. Conclusions are reached on the reasons why both are particularly effective in inducing the formation of polydienes having extremely high vinyl content.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1989.020151989104
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Spectroscopic studies of polymerized surfactants: 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 23 (1985), S. 2203-2216 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Spectroscopic studies have been performed on aqueous dispersions of the surfactant 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine before and after polymerization with ul-traviolet light. Monomers of this lipid can, under certain conditions, convert from the expected spherical liposomal form to a unique phase consisting of hollow tubules. To determine the molecular conformation of these structures we have used Raman and infrared spectroscopies to probe the structure of the hydrocarbon chains and head groups of the lipids, and used absorption spectroscopy and resonance enhanced Raman scattering of the colored polymer to monitor the length and structure of the diacetylenic polymer backbone. Unusual C—H stretch-ing Raman bands imply that the hydrocarbon chain packing in the monomeric bilayers is different from that observed in other phosphatidylcholines, and that a distrubance in alkyl chain packing occurs on polymerization. Depending on irradiation conditions and the dispersal state of the lipid the polymer chains may be of at least three different colors, from which distinct resonance Raman spectra are obtained. The effective bond conjugation lengths range from quite short in the yellow polymer produced in sonicated vesicles to extremely long in a blue component seen in polymerized tubules.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.180231015
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Silica coatings on α-alumina particles: Analysis and deposition mechanism (1989)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 14 (1989), S. 46-52 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Coatings are applied to particulate materials to enhance surface properties while retaining desired bulk properties. Characterization of such coatings presents a challenge. In this paper we present an example of a particle surface analysis and assess how factors such as roughness and coating thickness distributions affect quantitative conclusions. Silica coatings were deposited from aqueous solution on to α-alumina particles of 150 nm average size. Transmission electron microscopy, x-ray photoemission spectroscopy and secondary ion mass spectrometry/depth profiling were used to analyze coatings of thicknesses of tens of nanometers to submonolayer. The three techniques were in excellent agreement in the thickness ranges where they overlapped. XPS does not allow assessment of the uniformity or thickness distribution of the coatings. However, depth profiles are quantitatively consistent with a model of random attachment of the silica units to the particle surface during growth, with no preference for the uncoated alumina surface over the previously deposited silica.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740140111
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    Paper (German National Licenses)
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