Nick Sheppard

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2. THE NEED FOR METRICS Increasingly there is a need for quantitative evidence in order to help demonstrate the value of online services. Such evidence can also help to detect emerging patterns of usage and identify associated operational best practice. This paper seeks to initiate a discussion on approaches to metrics for institutional repositories by(More)
Skin can be exposed to high-intensity UV-radiation in hot countries and during sunbed use; however, the free-radical damage at these intensities is unknown. We used electron spin resonance spectroscopy to measure free-radical generation in ex vivo human skin/substitutes +/- the spin-trap 5,5 dimethyl-1-pyrroline N-oxide (DMPO) exposed to solar-irradiation(More)
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