منابع مشابه
Why keep climate records - and how to keep them
For all our concern about the damage caused to art by the environment, there are no data which allow us to connect measured environmental variables with the rate of deterioration of the art in exhibition or storage. Recent proposals for rating the suitability of spaces and the vulnerability of individual objects require a durability of electronic data which is very unlikely to be achieved. This...
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Cone photoreceptors, responsible for high-resolution and color vision, progressively degenerate following the death of rod photoreceptors in the blinding disease retinitis pigmentosa. Aït-Ali et al. describe a molecular mechanism by which RdCVF, a factor normally released by rods, controls glucose entry into cones, enhancing their survival.
متن کاملKeep Them or Free Them: A Contract Theory model about Slaves’ Manumission
Manumission, the freeing of a slave from bondage, has served as a powerful incentive for slaves throughout history. It was common enough in ancient times that economic historians have gone as far as to describe the Roman labor system as a functioning labor market: manumission was common enough that it encouraged slaves to work cooperatively with their owners. This paper develops a simple contra...
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ژورنال
عنوان ژورنال: Academic Medicine
سال: 1931
ISSN: 1040-2446
DOI: 10.1097/00001888-193105000-00003