منابع مشابه
Electron Stains
Chemical studies have been carried out on the interaction of DNA with uranyl salts. The effect of variations in pH, salt concentration, and structural integrity of the DNA on the stoichiometry of the salt-substrate complex have been investigated. At pH 3.5 DNA interacts with uranyl ions in low concentration yielding a substrate metal ion complex with a UO(2) (++)/P mole ratio of about (1/2) and...
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The concept of authenticity -the idea of `being oneself' or being `true to oneself' -is central to modern moral thought. Yet it is a puzzling notion. This article discusses two accounts of it. Essentialism holds that each individual has a `true' nature or self. Feelings and actions are authentic when they correspond to this nature. This approach is contrasted with views of the self as a complex...
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Archivists and librarians play a critical role in preserving and making accessible cultural resources, but there is now an uncertainty as to whether their traditional expertise is sufficient when dealing with digital resources. A particular focus of concern is the authenticity of these resources. This article looks at how the concept of authenticity has been constructed in traditional environme...
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On one point an important difference of opinion may exist between medico-legal workers: should a positive chemical test, in the absence of finding spermatozoa under the microscope, be accepted a& evidence of semen ? Some are in favour of doing so (Bagchi, 1937), others against (Owens, 1935; Thomas, 1937; Kamath, 1938; Glaister, 1938; McNally, 1939; Modi, 1940; Rhodes, 1940) and yet others appea...
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2014
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat4054