Rubber Varnish
نویسندگان
چکیده
منابع مشابه
Microbial origin of desert varnish.
Scanning electron microscopy and energy dispersive x-ray analyses of desert varnish reveal that microorganisms concentrate ambient manganese that becomes greatly enhanced in brown to black varnish. Specific characteristics of desert varnish and of varnish bacteria support a microbial origin for manganese-rich films. Varnish microbes can be cultured and produce laboratory manganese films. Accord...
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The present investigation was undertaken to determine whether cavity varnish can serve as a bacterial reservoir. Twenty-eight samples of cavity varnish were collected From bottles in use in a clinic and two From previously unopened bottles of the material. Samples were grown on a variety of media, both aerobically and anaerobically. Results indicated growth in 25 of 30 samples. The two Freshly ...
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Mixtures of small rigid sand particles Ds and large soft rubber particles Dr are prepared at different volume fractions and tested to investigate their small-strain and zero-lateral strain responses (Dr /Ds & 10). Both data sets are simultaneously gathered in an oedometer cell instrumented with bender elements. Data are analyzed in the context of mixture theory and with the aid of numerical sim...
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The bright pigments of cave pictures in Spain have been preserved from Paeleolithic times by the accidental formation of a surface film of calcite (Kuhn, 1952), and since then many glazes have been used deliberately for the protection of colours. The idea of varnishing glass slides is not novel, but practical difficulties concerning preparation, pH, and especially viscosity, have discouraged it...
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F luoride varnish is a valuable tool in the prevention of tooth decay. Studies have demonstrated its effectiveness at arresting early cavitated lesions, remineralizing interproximal incipient smooth surface lesions and preventing caries. Medical personnel in many public health clinics now are applying these varnishes in an attempt to minimize treatment needs and reduce accessto-care problems. S...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1898
ISSN: 0036-8733
DOI: 10.1038/scientificamerican11051898-19107bsupp