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  • 1
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    Innovative materials processing strategies: a biomimetic approach (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-02-28
    Description: Many organisms construct structural ceramic (biomineral) composites from seemingly mundane materials; cell-mediated processes control both the nucleation and growth of mineral and the development of composite microarchitecture. Living systems fabricate biocomposites by: (i) confining biomineralization within specific subunit compartments; (ii) producing a specific mineral with defined crystal size and orientation; and (iii) packaging many incremental units together in a moving front process to form fully densified, macroscopic structures. By adapting biological principles, materials scientists are attempting to produce novel materials. To date, neither the elegance of the biomineral assembly mechanisms nor the intricate composite microarchitectures have been duplicated by nonbiological processing. However, substantial progress has been made in the understanding of how biomineralization occurs, and the first steps are now being taken to exploit the basic principles involved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heuer, A H -- Fink, D J -- Laraia, V J -- Arias, J L -- Calvert, P D -- Kendall, K -- Messing, G L -- Blackwell, J -- Rieke, P C -- Thompson, D H -- New York, N.Y. -- Science. 1992 Feb 28;255(5048):1098-105.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1546311" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Matrix ; Calcification, Physiologic ; *Ceramics ; Chickens ; Crystallography
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Role for the target enzyme in deactivation of photoreceptor G protein in vivo (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-02
    Description: Heterotrimeric guanosine 5'-triphosphate (GTP)-binding proteins (G proteins) are deactivated by hydrolysis of the GTP that they bind when activated by transmembrane receptors. Transducin, the G protein that relays visual excitation from rhodopsin to the cyclic guanosine 3',5'-monophosphate phosphodiesterase (PDE) in retinal photoreceptors, must be deactivated for the light response to recover. A point mutation in the gamma subunit of PDE impaired transducin-PDE interactions and slowed the recovery rate of the flash response in transgenic mouse rods. These results indicate that the normal deactivation of transducin in vivo requires the G protein to interact with its target enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tsang, S H -- Burns, M E -- Calvert, P D -- Gouras, P -- Baylor, D A -- Goff, S P -- Arshavsky, V Y -- EY05750/EY/NEI NIH HHS/ -- EY10336/EY/NEI NIH HHS/ -- T32 EY07105/EY/NEI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Oct 2;282(5386):117-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Edward S. Harkness Eye Institute and Department of Biochemistry and Molecular Biophysics, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9756475" target="_blank"〉PubMed〈/a〉
    Keywords: 3',5'-Cyclic-GMP Phosphodiesterases/genetics/*metabolism ; Animals ; Cyclic Nucleotide Phosphodiesterases, Type 6 ; Electroretinography ; Enzyme Activation ; Female ; Guanosine 5'-O-(3-Thiotriphosphate)/pharmacology ; Guanosine Triphosphate/metabolism ; Hydrolysis ; Light ; Male ; Mice ; Mice, Knockout ; Mice, Transgenic ; Point Mutation ; Retina/cytology/physiology ; Retinal Degeneration ; Rod Cell Outer Segment/*metabolism ; Transducin/*metabolism ; Transgenes ; *Vision, Ocular
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Controlled structure methacrylic copolymers as dispersants for ceramics processing (1992)
    s.l. : American Chemical Society
    Chemistry of materials 4 (1992), S. 1200-1207 
    Details
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cm00024a018
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  • 4
    Electronic Resource
    Electronic Resource
    Membrane protein diffusion sets the speed of rod phototransduction (2001)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 411 (2001), S. 90-94 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Retinal rods signal the activation of a single receptor molecule by a photon. To ensure efficient photon capture, rods maintain about 109 copies of rhodopsin densely packed into membranous disks. But a high packing density of rhodopsin may impede other steps in phototransduction ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35075083
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  • 5
    Electronic Resource
    Electronic Resource
    Precipitation of magnetic oxides in polymers (1987)
    Springer
    Journal of materials science 6 (1987), S. 901-904 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01729863
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  • 6
    Electronic Resource
    Electronic Resource
    Second-harmonic generation by composite materials (1987)
    Springer
    Journal of materials science 6 (1987), S. 167-170 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01728974
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  • 7
    Electronic Resource
    Electronic Resource
    Photopolymerizable binders for ceramics (1986)
    Springer
    Journal of materials science 5 (1986), S. 81-83 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01671445
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  • 8
    Electronic Resource
    Electronic Resource
    Polymer diffusion disentangled (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 113-113 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN 1971 de Gennes predicted that the diffusion coefficient of a polymer chain in a gel would be proportional to the inverse square of the molecular weight (M) and with some reservations extended this prediction to self diffusion of molten polymers (J. Chem. Phys. 55, 572; 1972). At the time the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/271113b0
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  • 9
    Electronic Resource
    Electronic Resource
    Stresses at spherulite boundaries (1977)
    [s.l.] : Nature Publishing Group
    Nature 268 (1977), S. 321-323 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 shows a 5-um thick film of polyethylene (Mn = 11,100, Mw = 68,000) prepared by dropping a^-xylene solution on to a hot microscope slide, drying and melting the polymer and rapidly cooling. The dark lines surrounding the banded spherulites can be seen. Note that boundaries are not dark if ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/268321a0
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  • 10
    Electronic Resource
    Electronic Resource
    Organotitanate dispersants for BaTiO3 and Al2O3 (1987)
    Springer
    Journal of materials science 22 (1987), S. 1677-1681 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An alkoxytitanium carboxylate of a branched carboxylic acid was synthesized and its effectiveness as a dispersant for oxide powders determined. The amount of titanate required to produce stable dispersions & nonaqueous media corresponded to monomolecular layer coverage of the oxide particles by the titanate. Low-molecular-weight organotitanate dispersants should prove useful as substitutes for fish oil or polymers in ceramics processing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132391
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