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  • 1
    Electronic Resource
    Electronic Resource
    Biospecific affinity chromatography of plasma fibronectin on cross-linked gelatin microbeads
    Amsterdam : Elsevier
    Journal of Chromatography B: Biomedical Sciences and Applications 419 (1987), S. 308-314 
    Details
    ISSN: 0378-4347
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0378-4347(87)80292-X
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of the time-temperature superposition of the relaxation modulus and time-to-break of preswollen gels (1974)
    Springer
    Rheologica acta 13 (1974), S. 116-126 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Die Spannungsrelaxation und die Bruchzeitt b als Funktion der Spannungσ wurden am gequollenen homogenen und heterogenen Poly(2-Hydroxyäthylmethacrylat) im gleichen Zeit- und Temperaturintervall untersucht. Die homogenen Proben wurden durch Vernetzungspolymerisation von 2-Hydroxyäthylmethacrylat mit Äthylendimethacrylat als Vernetzungsmittel (c = 0,21 und 0,65 104 mol cm−3) und Äthylenglykol als Verdünnungsmittel hergestellt; die heterogenen Proben mit verschiedener Porosität wurden mit Wasser als Verdünnungsmittel hergestellt. Die Verschiebungsfaktoren loga T aus Relaxations- und Bruchversuch stimmen nur bei Proben mit einem höheren Vernetzungsgrad überein. Für Systeme mit einem niedrigeren Vernetzungsgrad sind die viskoelastischen Kenngrößen weniger temperaturempfindlich. Bei höheren Temperaturen (T〉 30°C) ist die Konstruktion der generalisierten Kurven nur mit zusätzlichen Verschiebungsfaktoren möglich; dieses Verhalten wurde schon früher an anderen Polymethacrylaten vonFerry und Mitarb. beobachtet. Der Einfluß von Vernetzungsdichte und von Quellung auf die generalisierten Kurven logE(t) vs. logt/a T und logt b /a T vs. logσ wurde den Differenzen in dem viskoelastischen Mechanismus der Spannungsrelaxation und des Bruches sowie den Differenzen in der Netzwerk-Topologie zugeschrieben.
    Notes: Summary Both stress relaxation behaviour and time-to-breakt b as a function of stressσ were studied in identical time and temperature intervals using poly(2-hydroxyethyl-methacrylate) gels in the swollen state, prepared both in the homogeneous and in the heterogeneous form. Homogeneous samples were prepared by means of crosslinking polymerization (concentration of ethylene dimethacrylate as a crosslinking agentc=0.21 and 0.65×10−4mol cm−3) in the presence of ethylene glycol (v 0=0.6−0.3); heterogeneous samples with various degrees of porosity were prepared in the presence of water (v 0=0.8−0.2). Irrespective ofv 0, an agreement was found between the temperature shift factors, loga T , obtained from the viscoelastic and ultimate measurements for the systems prepared with a higher concentration of the crosslinking agent; for the lightly crosslinked systems thea T values from the viscoelastic data were less sensitive to temperature. The temperature dependence of loga T was not the same at temperaturesT〉30°C and additional horizontal-vertical shifts had to be used; this effect is very similar to that observed previously for the other polymethacrylates byFerry and coworkers. In the water preswollen systems the isochronous breaking stress vs.v 0 curves exhibit a maximum which disappears with time. The moduliE(t) of the same systems decrease approximately withv 0 -1 irrespective of the degree of preswelling. The effect of crosslinking and preswelling on the shape of the superimposed logE(t) vs. logt/a T and logt b /a T vs. logσ curves was ascribed to the different role of viscoelastic mechanism in the relaxation and in the ultimate process and to different topological features of the networks prepared.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01520864
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  • 3
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    Unknown
    Women in Mesopotamia (1995)
    London : Periodicals Archive Online (PAO)
    Journal of the Economic and Social History of the Orient. 38 (1995) 123 
    Details
    ISSN: 0022-4995
    Topics: Ethnic Sciences , History , Sociology , Economics
    Description / Table of Contents: ANCIENT NEAR EAST
    Notes: SUBJECTS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:6133-1995-038-00-000004
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  • 4
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    Unknown
    Review of: Engelbert Kaempfer, "Phoenix persicus. Die Geschichte der Dattelpalme" (1988)
    London : Periodicals Archive Online (PAO)
    Journal of the Economic and Social History of the Orient. 31 (1988) 226 
    Details
    ISSN: 0022-4995
    Topics: Ethnic Sciences , History , Sociology , Economics
    Notes: GENERAL
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:6133-1988-031-00-000001
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  • 5
    Electronic Resource
    Electronic Resource
    Gel-fabric prostheses of the ureter (1967)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 1 (1967), S. 325-336 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: In 14 canines the ureter was substituted with a new type of ureteral gel-fabric prosthesis. The prosthesis is a tube of knitted fabric of polyester fiber case in a layer of hydrophilous glycol methacrylate gel. Anastomoses were carried out by inserting the prosthesis ends into the ureter lumen and by suturing the stump of the ureter to a special fixing ring on the prosthesis. Preliminary results of short-term obsevations (4 months) are quite promising. The prosthesis is non-irritating and conducts the urine satisfactorily.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820010304
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  • 6
    Electronic Resource
    Electronic Resource
    Use of spongy hydron in plastic surgery (1968)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 2 (1968), S. 237-243 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: A hydrophilic plastic material (USA trademark Hydron), developed by Wichterle and Lím, was used as a sponge for augmentation of breasts in the clinic for plastic surgery. The preparation of the prosthesis and the operational procedures are described.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820020207
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  • 7
    Electronic Resource
    Electronic Resource
    Water sorption and mechanical properties of 2-hydroxyethyl-methacrylate and methylmethacrylate copolymers (1984)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 18 (1984), S. 137-146 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Randomly cross-linked copolymers of 2-hydroxyethyl-methacrylate (HEMA) and methyl-methacrylate (MMA) have been prepared and studied in the dry and swollen state. Tensile and indentation tests indicate that by changing the composition of copolymers, it is possible to obtain materials with a wide range of mechanical properties and corresponding glass transition temperatures. Water diffusion coefficients in sorption and desorption experiments have been calculated and compared.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820180204
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  • 8
    Electronic Resource
    Electronic Resource
    Employment of hydron polymer antibiotic vehicle in otolaryngology (1969)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 3 (1969), S. 443-454 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Hydrophilic poly (glycolmethacrylate) HydronU. S. Trade Mark, National Patent Development Corporation, 375 Park Avenue, New York, N. Y. gels were used as vehicles for selected antibiotics. Polymer vehicles with various antibiotics were prepared and their biological activity tested by sensitivity tests on solid and liquid media by means of reference microbe strains. Polymer vehicles with chosen antibiotics were implanted in rats and the rate of diffusion tested in vivo by removing the vehicles at fixed time intervals and ascertaining the content of the remaining antibiotic in the vehicle. In the clinical part, the favorable results of application of antibiotics saturated gel vehicles in tympanoplastic operations and healing of inflammatory states after middle-ear operations are described.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820030306
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  • 9
    Electronic Resource
    Electronic Resource
    Equilibrium adsorption of human serum albumin and human fibrinogen on hydrophobic and hydrophilic surfaces (1984)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 18 (1984), S. 685-693 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The adsorption of human serum albumin and human fibrinogen on flat surfaces was quantitatively determined by measuring the decrease in UV absorption in the adsorption solution. The applicability of the method is discussed for hydrophilic and hydrophobic materials. The values of equilibrium adsorption are presented - albumin on polyethylene, and fibrinogen on polyethylene, carbon, poly(2-hydroxyethyl methacrylate), and cellophane.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820180609
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  • 10
    Electronic Resource
    Electronic Resource
    Surgical suture materials coated with a layer of hydrophilic HydronU.S. Trademark, National Patent Development Corporation, 375 Park Avenue, New York, N. Y. gel (1969)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 3 (1969), S. 305-313 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Surgical suture materials were coated with a layer of hydrophilic Hydron gel. By tests carried out on tissue cultures, it has been verified that this layer itself improves the tolerance of the fiber by the organism. In addition, appropriate biologically active substances (e.g., antibiotics), preventing either the development or spreading of an infection along the fiber, may be incorporated into the gel layer. Neither the knotting ability nor other mechanical properties of the fiber are influenced by the gel coating. Preliminary clinical experiments showed good results.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820030210
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