منابع مشابه
Restoring America's big, wild animals.
ered on a ranch in New Mexico to ponder a bold plan. The scientists, trained in a variety of disciplines, ranged from the grand old men of the field to those of us earlier in our careers. The idea we were mulling over was the reintroduction of large vertebrates—megafauna—to North America. Most of these animals, such as mammoths and cheetahs, died out roughly 13,000 years ago, when humans from E...
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While Rice may not have lost as much as of its investments as other universi t ies, its endowment still took a hit dur ing the most recent recession. For fiscal year 2009, Rice incurred an 18.2-percent loss on the e n d o w m e n t ' s investment returns, worth about $838 million. The university also spent $215 million of the endowment , $55 million of which was recouped in endowment gifts, acc...
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This papcrdescribes methods of managing or seeding to restore big sagebrush communities for wildlife habitat. The focus is on three bigsagebrush subspecies, Wyomingbigsagebrush (Artemi sia tridentata ssp. wyomingensis), basin big sagebrush (Artemisia tridentata ssp. tridentata), and mountain big sagebrush (Artemisia tridentata ssp. vaseyana). Natural colonization of the native plant community ...
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s Cardiology 2010;115:251–293 252 Severity of Valvular Involvement in Rheumatic Heart Disease on Echocardiography H.A. Aurakzai, A. Shahbaz, S. Hameed, S. Gohar, M. Qureshi, H. Khan, W. Sami, M. Azhar, J.S. Khan Punjab Institute of Cardiology, Lahore, Pakistan Objective: RHD continues to be a major public health problem in developing countries like Pakistan. We conducted this study to analyze t...
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ژورنال
عنوان ژورنال: Nature
سال: 1992
ISSN: 0028-0836,1476-4687
DOI: 10.1038/356649a0