منابع مشابه
To cut or not to cut?
acres, and you enjoy a variety of activities on your land: watching wildlife, hiking, hunting, picking berries, picnicking or taking photos of wildlife and wildflowers. You delight in the beauty and solitude that comes with owning a woodland. You warm yourself in late fall and winter by cutting a little firewood, and you wouldn’t mind making a little extra cash, though managing your woodland fo...
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Settings and participants. Researchers enrolled children with uncomplicated cases of SAM at 18 feeding clinics in rural Malawi. Children presenting to the clinics were measured for weight, height, and mid-upper arm circumference. Eligible patients were 6 to 59 months of age presenting with kwashiorkor (edema), marasmus (weightfor-height z score of less than –3), or both (marasmic kwashiorkor) a...
متن کاملSeparation cut-offs for birth and death chains
This paper gives a necessary and sufficient condition for a sequence of birth and death chains to converge abruptly to stationarity, that is, to present a cut-off. The condition involves the notions of spectral gap and mixing time. Y. Peres has observed that for many families of Markov chains, there is a cutoff if and only if the product of spectral gap and mixing time tends to infinity. We est...
متن کاملClose - to - Death Experience after Trauma
تجربه نزدیک به مرگ، یکسری وقایع واضحی است که توسط افراد معدودی بعد از دوره ای از مرگ بالینی گزارش می گردد (بعضی از افراد این تجربیات را به دنبال جراحی، تولد بچه و خودکشی عنوان می نمایند. برخی از مؤلفین برآورد کرده اند که تقریبا ۴۰ درصد افرادی که بطور موفق احیاء شده اند و یا در موقعیتهای تهدید کننده زندگی قرار گرفته اند، تجربه نزدیک مرگ داشته اند. قربانیان اغلب بعضی از وقایع را در طول احیاء بیاد...
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ژورنال
عنوان ژورنال: Nature Reviews Molecular Cell Biology
سال: 2002
ISSN: 1471-0072,1471-0080
DOI: 10.1038/nrm946