منابع مشابه
DNA viruses: the really big ones (giruses).
Viruses with genomes greater than 300 kb and up to 1200 kb are being discovered with increasing frequency. These large viruses (often called giruses) can encode up to 900 proteins and also many tRNAs. Consequently, these viruses have more protein-encoding genes than many bacteria, and the concept of small particle/small genome that once defined viruses is no longer valid. Giruses infect bacteri...
متن کاملThe importance in fishery management of leaving the big ones.
Research by Berkeley et al. and by Bobko and Berkeley has recently demonstrated that older individuals of some fish species produce larvae that have substantially better survival potential than do larvae from younger fishes. These new findings augment established knowledge that larger individuals usually have exponentially greater fecundity. This is important because commercial fisheries and es...
متن کاملFish market prices drive overfishing of the ‘big ones’
The relationship between fish market price and body size has not been explored much in fisheries science. Here, the mean market prices and fish body size were collected in order to examine the hypothesis that large fish, both among- and within-species, are being selectively targeted by fisheries because they may yield greater profit. Trophic levels, vulnerability to fishing and global landings ...
متن کاملThe Ones We Know and the Ones We Don’t
When you open your eyes in the morning, you usually see what you expect to see. Often it will be your bedroom, with things where you left them before you went to sleep. What if you opened your eyes and unexpectedly found yourself in a steaming tropical jungle? Why do we have expectations about what is about to happen to us? Why do we get surprised when something unexpected happens to us? More g...
متن کاملAn Aged Man With One Big Chest Lesion and a Scattering of Smaller Ones
A 78-year-old man is seen upon admission to a behavioral hospital unit. Agitation and visual hallucinations led to this admission. A similar prior episode, complicating his established Lewy body dementia, cleared with hospitalization and clozapine therapy. PHYSICAL EXAMINATION Mildly obese man who is conversationally capable and friendly, though dementia is also evident. Vital signs normal. Has...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1993
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed070p260.5