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  • 1
    Electronic Resource
    Electronic Resource
    Thermonuclear 36 Cl pulse in natural water (1982)
    [s.l.] : Nature Publishing Group
    Nature 300 (1982), S. 737-740 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Chloride is widely used as a natural and artificial tracer in studies of freshwater systems. In most conditions, it is negligibly sorbed on solid particles, which greatly enhances its potential value. However, the timing and size of the 36C1 fallout pulse, which have not been reported previously, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/300737a0
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  • 2
    Electronic Resource
    Electronic Resource
    Pharmaceutical progress (1987)
    [s.l.] : Nature Publishing Group
    Nature 329 (1987), S. 371-371 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Anti-Cancer Drug Design. Editors Stanley Crooke, Stephen Neidle and Shigeru Tsukagoshi. Macmillan, London. 4/yr. UK £55; elsewhere £75. Drug Design and Delivery. Editor J.S. Morley. Harwood. 4 issues per volume. $286 (institutional); $194 (libraries). THE greater understanding of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/329371a0
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  • 3
    Electronic Resource
    Electronic Resource
    Meandering of water rivulets (1984)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 30 (1984), S. 263-267 
    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: Water rivulets are produced on inclined flat plates made of high-density polyethylene, Mylar, Plexiglas and acetate film. Conditions are obtained for straight rivulets to begin to meander and for measuring rivulets to cease their unsteadiness. These critical conditions are correlated using a one-dimensional theory of high Reynolds number slender rivulets in which pressure gradients generated by curvature, surface tensionand contact-angle hysteresis balance.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690300214
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  • 4
    Electronic Resource
    Electronic Resource
    Poly(organo phosphazene) nanoparticles surface modified with poly(ethylene oxide) (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 52 (1996), S. 89-95 
    Details
    ISSN: 0006-3592
    Keywords: poly(organo phosphazenes) ; nanoparticles ; poly(ethylene oxide) ; biodegradable materials ; surface modification ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The use of biodegradable derivatives of poly(organo phosphazenes) for the preparation of nanoparticles and their surface modification with the novel poly(ethylene oxide) derivative of poly(organo phosphazene) has been assessed using a range of in vitro characterization methods. The nanoparticles were produced by the precipitation solvent evaporation method from the derivative co-substituted with phenylalanine and glycine ethyl ester side groups. A reduction in particle size to less than 200 nm was achieved by an increase in pH of the preparation medium. The formation (and colloidal stability) of these nanoparticles seems to be controlled by two opposite effects: attractive hydrophobic interactions between phenylalanine ester groups and electrostatic repulsions arising from the carboxyl groups formed due to (partial) hydrolysis of the ester bond(s) at the high pH of the preparation medium. The poly[(glycine ethyl ester)phosphazene] derivative containing 5000-Da poly(ethylene oxide) as 5% of the side groups was used for the surface modification of nanoparticles. Adsorbed onto the particles, the polymer produced a thick coating layer of approximately 35 nm. The coated nanoparticles exhibited reduced surface negative potential and improved colloidal stability toward electrolyte-induced flocculation, relative to the uncoated system. However, the steric stabilization provided was less effective than that of a Poloxamine 908 coating. This difference in effectiveness of the steric stabilization might indicate that, although both the stabilizing polymers possess a 5000-Da poly(ethylene oxide) moiety, there is a difference in the arrangements of these poly(ethylene oxide) chains at the particle surface. © 1996 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Microstructural evolution of a silicon oxide phase in a perfluorosulfonic acid ionomer by an in situ sol-gel reaction (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 55 (1995), S. 181-190 
    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: Nanocomposites were produced via sol-gel reactions for tetraethylorthosilicate within the cluster morphology of perfluorosulfonic acid films. Small-angle x-ray scattering revealed that the polar/nonpolar nanophase-separated morphological template persists despite invasion by the silicon oxide phase. Scanning electron microscopy (ESEM-EDAX) studies have indicated that the greatest silicon oxide concentration occurs near the surface and decreases to a minimum in the middle. Optical and ESEM micrographs revealed a brittle, surface-attached silica layer at high silicon oxide contents. © 1995 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1995.070550120
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