منابع مشابه
Extinction tsunami can be avoided.
In many senses, the recent publication in PNAS by Ceballos et al. (1) on population losses and declines in vertebrates can be traced back to efforts early in the 20th century led by the American Committee for International Wildlife Protection to document the extinction phenomenon (2–4). The focus at the time was very much on individual species, not on extinction rates, and certainly not on prec...
متن کاملAn update on nitrate tolerance: can it be avoided?
Organic nitrates have been recognized by physicians as potent vasodilators and effective therapy for angina pectoris for over 100 years."2 Despite the advent of beta-blockers and calcium channel antagonists in the 1960s the organic nitrates remain important antianginal agents and are well-established as the drugs of choice in acute angina. Recently interest in nitrate therapy has increased as a...
متن کاملLow Clearance Ahead: Can Predictable IT Crashes Be Avoided?
Just how many warnings are needed to prevent an accident? Apparently for many driving trucks and RVs under the Norfolk Southern–Gregson Street Overpass in Durham, North Carolina, multiple low-clearance signs, an LED warning sign, and ashing lights aren’t enough. Since 2008, the 11-foot, 8-inch bridge— nicknamed the “Can Opener” for the numerous vehicle tops it has sheared o —has been the site ...
متن کاملSupernumerary teat removal can be avoided in dairy sheep.
The aim of this work was to determine whether the removal of supernumerary teats from dairy sheep when they are born is a useful procedure in the farming routine. Ewes were divided into 3 groups according to the number of teats at milking: ewes who were born with 2 teats; ewes who were born with 4 teats and had the 2 supernumerary nipples cut just after birth; and ewes who were born with 4 teat...
متن کاملCan a collapse of global civilization be avoided?
Environmental problems have contributed to numerous collapses of civilizations in the past. Now, for the first time, a global collapse appears likely. Overpopulation, overconsumption by the rich and poor choices of technologies are major drivers; dramatic cultural change provides the main hope of averting calamity.
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ژورنال
عنوان ژورنال: Nature Reviews Endocrinology
سال: 2011
ISSN: 1759-5029,1759-5037
DOI: 10.1038/nrendo.2010.223