منابع مشابه
Vitrification and levitation of a liquid droplet on liquid nitrogen.
The vitrification of a liquid occurs when ice crystal formation is prevented in the cryogenic environment through ultrarapid cooling. In general, vitrification entails a large temperature difference between the liquid and its surrounding medium. In our droplet vitrification experiments, we observed that such vitrification events are accompanied by a Leidenfrost phenomenon, which impedes the hea...
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Genomic DNA extraction with a high quantity and quality is a basic requirement in molecular biology. The DNA obtained was free of any contamination proteins, polysaccharide, polyphenols and colored pigments. These compounds would interfere with the genomic isolation procedures and downstream reactions such as restriction enzyme analysis and gene amplification. The isolated genomic DNA was fo...
متن کاملHazards of Liquid Nitrogen Cryovials
There have been several recent incidents involving the exploding of cryopreservation vials in Trust and Medical School laboratories. This occurs when liquid nitrogen (LN ) leaks into the vials and rapidly expands when removed from the tank. In one incident in our Medical School a research worker’s hand was injured. At Edinburgh University the lid of a cryovial was projected into a student’s eye...
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Solution and suspension N sources have been developed as substitutes Cor urea in spray solutions used by lawn-care proCessionals. A field study was conducted to evaluate the response of Kentucky bluegrass (Poa prarensis L.) growing on a Catlin silt loam (Typic ArgiudoLl), to applications oC the nell' solution and suspension N sources, alone or combined with urea, by comparison to turC response ...
متن کاملPrebreakdown events in liquid nitrogen
2014 It was shown previously that a small volume of liquid nitrogen in front of a sharp metal tip can withstand an extremely high field without any sign of breakdown or charge injection. Subsequently, the influence of the tip radius on the critical field has been investigated and is described here. Also, by monitoring the injection, it has been possible to analyse the influence of the injected ...
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ژورنال
عنوان ژورنال: The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
سال: 1849
ISSN: 1941-5966,1941-5974
DOI: 10.1080/14786444908646195