منابع مشابه
Whale comeback
Last month I came across a folder of papers I had written at the age of 16 for my high school English class. This occasion, in some ways like Proust’s madeleine, triggered recollections of how I, as a 16 year-old, framed the thoughts I had about what I wanted to do with my life. One of those early papers was about Frost’s poem The Road Not Taken. I remember not terribly liking the poem. But the...
متن کاملWhale song
was revived with the emergence of cognitive ethology. And the cycle of excess is being repeated, I think. All animals are proving to be really, really clever, and, more remarkably, in very human-like ways. Hmmm. That's not a very interesting kind of evolution. And I wonder if a lot of the results we're getting don't have more to do with the way we're conceptualizing the problems we put to anima...
متن کاملSurvival of bacteria in carcasses.
Bacteria injected into the bloodstream of guinea pigs shortly before death decreased in number in carcass tissues for about 1 h after death. If initial bacterial numbers were sufficiently low, all bacteria were eliminated, and carcass tissues were sterile 24 h after death. Carcass tissue sterility was maintained with an initial density of Clostridium perfringens or Salmonella typhimurium of 20 ...
متن کاملSperm whale sound production
largest, yet most elusive, creatures inhabiting deep ocean waters. Adult sperm whales undertake long, deep dives (Watkins et al., 1993) into the darkness and high pressure of the mesoand bathypelagic depths. They do this to locate and catch approximately 1000 kg (Lockyer, 1981) of medium-sized squid and fish (Clarke et al., 1993) each day. The most prominent feature of the sperm whale physique ...
متن کاملVirtual dissection of pig carcasses.
This paper proposes the use of computed tomography (CT) as a reference method for estimating the lean meat percentage (LMP) of pig carcasses. The current reference is manual dissection which has a limited accuracy due to variability between butchers. A contextual Bayesian classification scheme is applied to classify volume elements of full body CT-scans of pig carcasses into three tissue types....
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/349574a0