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  • Chemistry  (10)
  • [abr] DHET; Dihydroxyeicosatrienoic acid  (2)
  • Cancer Registry  (1)
  • 1
    Electronic Resource
    Electronic Resource
    19(S)-hydroxyeicosatetraenoic acid is a potent stimulator of renal Na^+-K^+-ATPase
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 152 (1988), S. 1269-1274 
    Details
    ISSN: 0006-291X
    Keywords: [abr] DHET; Dihydroxyeicosatrienoic acid ; [abr] EET; Epoxyeicosatrienoic acid ; [abr] HETE; Hydroxyeicosatetraenoic acid ; [abr] THF; Tetrahydrofuran
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(88)80422-4
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    19(S)-hydroxyeicosatetraenoic acid is a potent stimulator of renal Na^+-K^+-ATPase
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 152 (1988), S. 1269-1274 
    Details
    ISSN: 0006-291X
    Keywords: [abr] DHET; Dihydroxyeicosatrienoic acid ; [abr] EET; Epoxyeicosatrienoic acid ; [abr] HETE; Hydroxyeicosatetraenoic acid ; [abr] THF; Tetrahydrofuran
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(88)80422-4
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cancer registry of French Polynesia: Results for the 1990–1995 period among native and immigrant population (2000)
    Springer
    European journal of epidemiology 16 (2000), S. 661-667 
    Details
    ISSN: 1573-7284
    Keywords: Cancer incidence ; Cancer Registry ; French Polynesia ; Natives/Immigrants ; South Pacific
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present the data of the Cancer Registry of French Polynesia (FP) for the 1990–1995 period, highlighting the difference between the incidences among inhabitants born in FP and in immigrants. A total of 1606 incident cases of cancer were registered during the 6-year period from 1990 to 1995, about 90% of which were histologically confirmed. Among these incident cases, 1361 occurred in native French Polynesians (FPs) and 245 in immigrants. Overall cancer incidence was found to be very slightly higher among women in the native population (209/105) than among immigrants (191/105), and lower among men in the native population (186/105) than in the immigrants (241/105). Cervix, corpus uteri, and thyroid cancer incidence rates were higher among women born in FP than among immigrant women. In contrast, colorectal cancer and melanoma incidences rates were lower, and colorectal cancer was similar. Laryngeal cancer incidence was higher among men born in FP than among immigrant men. In contrast, cancers of the oral cavity, colon and rectum, prostate gland, bladder and melanoma were less frequent. This first report, based on the data from the Cancer Registry of French Polynesia, shows high cancer incidence rates in females and low incidence in males born in FP, as compared to those recorded in France; and low cancer incidence rates, as compared to New Zealand Maoris and Hawaiians. For certain cancers, for example colorectal cancer, the incidence in the immigrant population seems to be between that of the native FP population and that of the population living in France, and lower than in New Zealand Maoris and Hawaiians.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007641009097
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Model-Filled polymers. III: Rheological behavior of polystyrene containing cross-linked polystyrene beads (1990)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 30 (1990), S. 1158-1164 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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 steady shear viscosity and dynamic moduli, at 180 and 200°C, of polystyrene composites, containing cross-linked monodisperse polystyrene beads varying in diameter from 0.2 to 0.8 μm, are independent of bead size and cross-link density, but increase with the volume fraction of beads. Steady shear viscosities exhibit power-law regions up to 40% concentration of beads, but no yield stress. Storage and loss moduli are initially linear with frequency, on double logarithmic plots, with limiting slopes of 1.3 and 0.9, respectively. Uncross-linked beads and beads cross-linked with 0.1% divinylbenzene are destroyed by thermomechanical dispersion in the melt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760301808
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  • 5
    Electronic Resource
    Electronic Resource
    Model filled polymers. V. Synthesis of crosslinked monodisperse polymethacrylate beads (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 30 (1992), S. 137-144 
    Details
    ISSN: 0887-624X
    Keywords: fillers ; emulsifier free emulsion polymerization ; monodisperse beads ; polymethacrylates ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Monodisperse polymethacrylate beads of varied size and crosslink density are prepared by emulsion copolymerization of methacrylate and divinyl monomers in the absence of emulsifiers. The sizes of polybutyl and polyethyl methacrylate beads decreased with increasing polymerization temperature, while polymethyl methacrylate beads were largely unchanged in size. The molar mass of polymer in polymethyl metnacrylate beads markedly exceeded that in polystyrene beads. The rate of polymerization increased, and bead size decreased, with increasing initiator concentration or decreasing monomer concentration. The polymethacrylate beads are used as filler particles in polymer composites.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1992.080300118
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  • 6
    Electronic Resource
    Electronic Resource
    Polymer-supported Ziegler-Natta catalysts. II. Ethylene homo- and copolymerization with TiCl4/MgR2/poly(ethylene-co-acrylic acid) catalyst (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 2135-2145 
    Details
    ISSN: 0887-624X
    Keywords: polymer support ; Ziegler-Natta catalyst ; ethylene ; polymerization ; copolymerization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A novel polymer-supported titanium-based catalyst shows high activity and nondecaying kinetic profiles for ethylene polymerization. The presence of 1-hexene comonomer drastically increases the catalyst activity, exhibiting a similarity to the MgCl2-supported catalysts. However, the nondecaying kinetic profiles of copolymerization distinguish this catalyst from the latter. Infrared analysis indicates that the transition metals were immobilized on the polymer support via functional groups. The effects of polymerization conditions on catalyst activity have been assessed. Characterization of the resulting polymer product by means of 13C-NMR, DSC, and SEM demonstrates a branch-free structure with high melting point, high crystallinity, and high molecular weight for the ethylene homopolymer. The reactivity ratios of ethylene-1-hexene copolymerization are evaluated from 13C-NMR analysis data. © 1994 John Wiley & Sons, Inc.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1994.080321116
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  • 7
    Electronic Resource
    Electronic Resource
    Model filled polymers. I. Synthesis of crosslinked monodisperse polystyrene beads (1990)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 28 (1990), S. 1909-1921 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Monodisperse crosslinked polystyrene beads of varied size and crosslink density are prepared by emulsion copolymerization of styrene and divinylbenzene in the absence of emulsifier. Tumbling and internally stirred reactors were used for synthesis, with minimal agglomeration at at least 0.22 wt % potassium persulfate and up to 10% by weight of styrene in aqueous emulsion in the absence of oxygen. Particle sizes decreased from 800 to 200 nm on raising the polymerization temperature from 60 to 95°C. The glass transition temperature of the beads increased from 104.4 to 133°C by the inclusion of up to 10% by weight of divinylbenzene. The thermal stability of the beads was higher for peroxide than for persulfate initiation. The crosslink density estimated from the degree of swelling was about one third that expected from stoichiometry. The polystyrene beads are used as filler particles in polymer composites.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1990.080280722
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  • 8
    Electronic Resource
    Electronic Resource
    Polymer-supported Ziegler-Natta catalysts. I. A preliminary study of catalyst synthesis (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 2127-2134 
    Details
    ISSN: 0887-624X
    Keywords: Ziegler-Natta catalyst ; polymer support ; ethylene ; polymerization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polymer-supported Ziegler-Natta catalysts based on various polymer carriers were synthesized by different methods, including (1) loading TiCl4 directly onto the polymer supports; (2) loading TiCl4 onto the polymer supports modified by magnesium chloride (MgCl2); (3) loading TiCl4 onto the polymer supports modified by Grignard reagent (RMgCl); and (4) loading TiCl4 onto the polymer supports modified by magnesium alkyls (MgR2). The activity and kinetic features of the catalysts for ethylene polymerization were examined. Among the combinations tested, the best was found to be TiCl4/n-Bu2Mg.Et3Al/poly(ethylene-co-acrylic acid) (92:8), which produced a catalyst of very high activity for ethylene polymerization. © 1994 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1994.080321115
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  • 9
    Electronic Resource
    Electronic Resource
    An improved finite difference method for fixed-bed multicomponent sorption (1991)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 37 (1991), S. 244-254 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A new computational procedure based on the finite difference methods is developed to solve the coupled partial differential equations describing nonisothermal and nonequilibrium sorption of multiple adsorbate systems on a fixed bed that contains bidispersed pellets. In this numerical method, a solution-adaptive gridding technique (SAG) is applied in combination with a four-point quadratic upstream differencing scheme to satisfactorily resolve very sharp concentration and temperature variations occurring in the case of small dispersing effects. Furthermore, the method resorts to a noniterative implicit procedure for solving the coupling between the column transport equations and the adsorption kinetics inside the pellets, which may be particularly efficient when the particle kinetics equations are highly stiff.The numerical model will be tested for one-, two- and three-transition systems. The results are compared to available analytical and equilibrium theory solutions.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690370210
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal frequency response method for the study of mass-transfer kinetics in adsorbents (1996)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 42 (1996), S. 700-712 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The frequency response method measuring the temperature and pressure of an adsorbent sample determines the mass- and heat-transfer kinetics in adsorbents, especially in zeolites. The temperature of the sample (large crystals or monolayers of pellets) is measured by infrared detection. The main aspects of the in-phase and out-of-phase functions as given by an analytical bidispersed model are described. They depend on characteristic times related to kinetic paprameters. Experimental results on adsorption of water on NaX zeolite (crystals or pellets) show that this method allows heat transfer to be very clearly delineated from mass-transfer modes and the separation of different mass-transfer modes. For a bidispersed sample, macro- and microporous mass-transfer parameters may be obtained with the same sample. Results on a contaminated 5A zeolite-propane system show the presence of mass-transfer resistance at the pellet surface. The infrared temperature measurement associated with the frequency response appears to be powerful in determining kinetic adsorption, and gives more information than the pressure measurement.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690420311
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