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  • Polymer and Materials Science  (5)
  • Case-control study  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Smoking and risk of non-Hodgkin's lymphoma and multiple myeloma (1992)
    Springer
    Cancer causes & control 3 (1992), S. 49-55 
    Details
    ISSN: 1573-7225
    Keywords: Case-control study ; cigarettes ; epidemiology ; etiology ; multiple myeloma ; non-Hodgkin's lymphoma ; smoking ; tobacco ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Population-based case-control interview studies of 622 White men with non-Hodgkin's lymphoma and 820 controls from Iowa and Minnesota (United States) and 173 White men with multiple myeloma and 452 controls from Iowa offered the opportunity to investigate the relationship of these cancers with smoking. Risks were significantly elevated for all lymphoma (odds ratio [OR]=1.4), high-grade lymphoma (OR=2.3), and unclassified lymphoma (OR=2.8) for cigarette smokers. Dose-response gradients were not seen with intensity of cigarette use, but risks for these subtypes were greatest for cigarette smokers of longest duration. Similar elevations in risks were seen for tobacco users. The risk of multiple myeloma was not significantly elevated for either tobacco users or cigarette smokers. The findings from this study confirm the lack of an association between smoking and multiple myeloma and provide some support for an association between tobacco use and certain subtypes of non-Hodgkin's lymphoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00051912
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pesticide exposures and multiple myeloma in Iowa men (1993)
    Springer
    Cancer causes & control 4 (1993), S. 153-156 
    Details
    ISSN: 1573-7225
    Keywords: Case-control study ; epidemiology ; etiology ; farming ; multiple myeloma ; pesticides ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: A population-based case-control study of 173 White men with multiple myeloma (MM) and 650 controls was conducted in Iowa (United States), an area with a large farming population, to evaluate the association between MM, agricultural risk factors, and exposure to individual pesticides. A slight nonsignificantly elevated risk for MM was seen among farmers (odds ratio [OR]=1.2, 95 percent confidence interval [CI]=0.8–1.7). Although slight excesses were observed, there were no significant associations between MM and handling either classes of pesticides or specific pesticides. Thus, this study found little evidence to suggest an association between risk of MM and farming or pesticides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00053156
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Flow properties at elevated temperatures and clarity of HSPAN gel-water dispersions (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 57 (1995), S. 121-132 
    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: Dispersions of hydrolyzed-starch-polyacrylonitrile (HSPAN) gel and distilled water underwent permanent diminuntion of room-temperature viscosity after maintenance above a threshold temperature of 75°C for periods of several weeks. Below the threshold temperature, viscosity measured at room temperature was unaffected. Above the threshold temperature, the final room-temperature viscosity exponentially varied as the inverse absolute temperature, and the viscosity decreased with increasing temperature. The HSPAN gel-distilled water dispersions exhibited both yield stress and velocity slip at a solid boundary, but the latter was not present at low shearing stresses. The former inhibited natural convection in a vertical slot with an imposed horizontal temperature difference. Clarity of the dispersions was demonstrated by a character-visibility test. Deaerating the distilled water by boiling before mixing with HSPAN gel improved the clarity of the resulting dispersion by eliminating the formation of bubbles at elevated temperature. © 1995 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1995.070570201
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  • 4
    Electronic Resource
    Electronic Resource
    Viscosity, yield stress, slip, and natural convection of HSPAN gel-water dispersions (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 48 (1993), S. 625-637 
    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: Three hydrolyzed-starch-polyacrylonitrile (HSPAN) copolymer materials tested as gel-water dispersions in a Brookfield rotating spindle viscometer exhibited velocity slip at solid boundaries and a yield stress. Dispersions with 0.5% HSPAN concentrations were about 20,000 times more viscous than water when the shear stress surpassed the yield stress and viscous power-law flow ensued. The apparent viscosity of an HSPAN gel-water dispersion was reduced by nearly an order of magnitude when tap water was substituted for deionized water. The apparent viscosity of the HSPAN gel-water dispersions decreased by about 30% after the fluid was continuously maintained at a temperature of 80°C for 1 week, and by an order of magnitude or more after 3 weeks under those conditions. In natural convection tests, the yield stress enabled an HSPAN gel-water dispersion to withstand greater temperature differences across a horizontal layer before inception of natural convection than a fluid without one. © 1993 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070480406
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of fibronectin amount and conformation on the strength of endothelial cell adhesion to HEMA/EMA copolymers (1996)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 30 (1996), S. 13-22 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The effect of substrate surface hydrophobicity on fibronectin (Fn) adsorption and endothelial cell adhesion strength was studied. Bovine aortic endothelial cells (BAEC) were plated for 2 h with and without preadsorbed Fn on slides coated with homopolymers and copolymers of hydrophilic polyhydroxyethylmethacrylate (polyHEMA) and hydrophobic polyethylmethacrylate (polyEMA). The polarity of the substrate was determined by Wilhelmy plate contact angle. The amount of adsorbed Fn was determined using 125I-labeled Fn. Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy was used to detect gross conformational changes of adsorbed Fn on polyHEMA or polyEMA. BAEC were cultured in serum-free medium for 2 h and subjected to a brief exposure of laminar flow in a variable-height flow chamber that provided a range of shear stresses of 15-185 dynes/cm2. The critical shear stress to detach 50% of the cells increased with increasing EMA content to a maximum at 20% HEMA/80% EMA copolymer irrespective of the presence of preadsorbed Fn. However, the critical force increased even though there were similar amounts of Fn adsorbed on all substrates. ATR-FTIR spectroscopy showed only minor changes in β-sheet structure of Fn adsorbed to polyHEMA and polyEMA. These results show that the force to detach cells did not increase solely with increasing amounts of adsorbed Fn; rather, these results indicate a more complex interplay involving both the amount and conformation of adsorbed Fn. © 1996 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 6
    Electronic Resource
    Electronic Resource
    Wellenlängenabhängigkeit des streulichtes makromolekularer lösungen bis ins nahe ultrarot (1974)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 175 (1974), S. 3029-3033 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1974.021751022
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  • 7
    Electronic Resource
    Electronic Resource
    Poly-(pearfluoralkylen)-benzimidazole (1965)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 89 (1965), S. 199-204 
    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: HF and CO2 have been identified as decomposition products during the preparation of poly(perfluoroalkylene) benzimidazoles. The formed fluorinated benzimidazoles are instable above 250°C. as could be shown with pure model substances. The mechanism of the decomposition is too complex to be explained in simple manner.
    Notes: Bei der Herstellung von Poly-(perfluoralkylen)-benzimidazolen tritt neben HF vor allem CO2 als Zersetzungsprodukt auf. Die gebildeten, fluorhaltigen Benzimidazole sind oberhalb 250°C unbeständig, wie an Hand von reinen Modellsubstanzen gezeigt wurde. Der Abbaumechanismus ist so verwickelt, daß er nicht auf einfache Weise geklärt werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1965.020890114
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