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  • 1
    Electronic Resource
    Electronic Resource
    Nucleoproteins. (1961)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 83 (1961), S. 1267-1268 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01466a077
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  • 2
    Electronic Resource
    Electronic Resource
    Mechanism of Clot Lysis (1960)
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 624-625 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I wish to report here some attempts made to distinguish a true fibrinolytic enzyme from other proteolytic enzymes which can also dissolve clots. Fibrinolytic activity as defined by the ability of a substance to dissolve a clot is measured by noting the time required to dissolve a standard fibrin ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/185624a0
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  • 3
    Electronic Resource
    Electronic Resource
    Mechanism of Antitumour Action of 1-Amino- Cyclo pentane Carboxylic Acid (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 1082-1083 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Steinberg et al.5 and many other workers6-7 previously demonstrated that synthetically prepared amino-acid analogues like the ammo-acids themselves could be incorporated into proteins and they can thus compete with the natural ammo -acids for the latter's incorporation into proteins. That ACPC ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1941082a0
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  • 4
    Electronic Resource
    Electronic Resource
    Catalysis of Incorporation of 14 C-Uridine into Rat Lens Ribonucleic Acid by Rat Lens Enzyme System (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 1094-1095 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Rats 6-8 weeks old and weighing approximately 100-120 gm. each were given intraperitoneal injections of 0-2 ml. of 2-14C-uridine (specific activity 2-2 x 106 c.p.m.) prepared in normal saline. The animals were killed at different time-intervals after injection. The lenses from each rat were ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1911094a0
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  • 5
    Electronic Resource
    Electronic Resource
    Role of Deoxyribonuclease in Synthesis of Deoxyribonucleic Acid (1963)
    [s.l.] : Nature Publishing Group
    Nature 200 (1963), S. 1205-1206 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Based on the observations that concentrations of both DNase activity and DNA are considerably higher in the liver of young rats than normally found in the same tissue of 210 months old rats, Devi et al.1,2 suggested a possible role of DNase in synthesis of DNA. The recent reports on the ability of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2001205a0
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of Age on Some Aspects of the Synthesis of Ribonucleic Acid (1966)
    [s.l.] : Nature Publishing Group
    Nature 212 (1966), S. 474-475 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE the first successful attempt to synthesize ribo-nucleic acid (RNA) from four nncleoside triphosphates and rat liver nuclei which served as the source of UNA polymerase1, many investigators have studied the nature of the deoxyribonueleic acid (DNA) primer (two-stranded or single-stranded DNA) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/212474a0
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  • 7
    Electronic Resource
    Electronic Resource
    Electrochemistry of the saline corrosion of conventional dental amalgams (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 2 (1975), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The electrochemical behaviour of the component phases of dental amalgam, viz. Ag3Sn (γ), Ag2Hg3 (γ1), Sn7–8Hg (γ2), Cu3Sn, Cu6Sn5 and a composite of γ1 +γ2 phases were evaluated in saline solution by standard anodic polarization techniques. Using multi-electrode theory a theoretical polarization diagram was constructed from the composite phases and compared with an anodic polarization profile attained from conventional dental amalgam. A strong agreement was obtained.From analysis of the electrochemical reactions it was found that the passivity of γ2 is due to the formation of stannous and/or stannic oxide (hydroxide) and that the corrosion failure of dental amalgam occurs through the dissolution of this passive oxide in γ2 at potentials of −250 mV Vs. SCE with the formation of tin oxychloride. The corrosion behaviour of Cu6Sn5 is similar to that of γ2 phase and its presence impairs the corrosion resistance of dental amalgam. If the copper containing phase is Cu3Sn, it will be passive in Ringer's solution, possibly as a result of Tamman's ‘multiple rule of eight’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1975.tb00910.x
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  • 8
    Electronic Resource
    Electronic Resource
    The in vivo corrosion of Dispersalloy (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 11 (1984), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The in vivo corrosion of Dispersalloy amalgam restorations was characterized by scanning electron microscopy and energy dispersive X-ray analysis. It was observed that the corrosion of CuSn resulted in pitting on the restoration surface. Corrosion of Sn-rich grain boundaries led to intergranular separation of γ1 grains. The tin released through corrosion reacted with Ca, P, Cl and O forming various insoluble complexes on the external surface, at the tooth-amalgam interface, and within the interior of the restoration. The demineralization of the amalgam-adjacent margin has been attributed to corrosion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1984.tb00586.x
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  • 9
    Electronic Resource
    Electronic Resource
    Heat treatment, microstructure and corrosion of a low-gold casting alloy (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 13 (1986), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of this study was to understand the relationship between heat treatment, microstructure and corrosion of a low-gold casting alloy. Potentiostatic and potentiodynamic polarization techniques were used to evaluate the chloride corrosion resistance of the alloy in the following conditions: (A) as cast, (B) bench cooled, (C) homogenized, (D) homogenized and aged for 2 h, and (E) homogenized and aged for 4 h.The microstructure of each sample, before and after corrosion, was examined by optical and/or scanning electron microscopy. In general, heterogeneous structures containing dendritic segregations and precipitates were found to be more prone to corrosion than the single phase solid solution structure produced by homogenization. On the basis of the potentiodynamic polarization data, the samples were ranked as follows: C〉D〉B〉A〉E, C being the most corrosion resistant structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1986.tb00675.x
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  • 10
    Electronic Resource
    Electronic Resource
    Degree of conversion in denture base materials for varied polymerization techniques 1 (2000)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 27 (2000), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: New processing techniques for denture base acrylic resins have been introduced which have not comparatively quantified the residual monomer content. While proper processing keeps the residual monomer in a tolerable range for most patients, tissue irritation and reaction due to potentially higher residual monomer in these alternative techniques could be a clinical concern. Decreased degree of conversion may influence physical properties as well as biocompatibility. This investigation evaluated the residual monomer content of acrylic resins cured by three different polymerization modes. Materials (polymerization system) evaluated were: Lucitone 199® (conventional process), Accelar 20® (rapid boil-out), and Acron MC® (microwave). Fourier transform infrared spectrometry (FTIR) was employed to determine the degree of conversion. All curing methods produced similar results (Lucitone 199®=92·7% (0·21), Acron MC®=92·6% (0·57), Accelar 20®=90·9% (0·73). Conversion for Accelar 20® (rapid boil-out technique), though statistically different (P〈0·05, anova) from the other two materials and polymerization techniques, was only slightly less. It is unlikely that the rapid boil-out technique would induce more adverse tissue responses than the other techniques included in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2000.00536.x
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