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Wink, Rudiger – International Journal of Learning and Change, 2008
The article analyses the role of gatekeepers between regional and disciplinary innovation systems in stem cell research as a case of integrative technologies. Which kind of gatekeepers is needed and which function can be fulfilled, differs along the knowledge value chain. Empirical results are used to explain the rationality of stem cell policies…
Descriptors: Foreign Countries, Epistemology, Genetics, Biotechnology
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Yip, Cheng-Wai – Journal of Biological Education, 2007
Extracts of fruit peels contain antioxidants that protect the bacterium "Escherichia coli" against damage induced by ultraviolet light. Antioxidants neutralise free radicals, thus preventing oxidative damage to cells and deoxyribonucleic acid. A high survival rate of UV-exposed cells was observed when grapefruit or grape peel extract was…
Descriptors: Safety, Scientific Methodology, Biology, Statistical Analysis