نتایج جستجو برای: نمایه boyce
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خشکسالی یکی از مخاطرات اصلی مرتبط با هواشناسی است. این مخاطره طبیعی بر تمام جوانب زندگی بشر مؤثر است. این پدیده از عوامل متعددی همچون بارندگی، دما، تبخیر-تعرق، مقدار آب موجود درخاک و غیره تأثیر می-پذیرد. خشکسالی در هر وضعیت اقلیمی ممکن است رخ دهد. پیش¬بینی خشکسالی نقش مهمی در کاهش خسارات ناشی از آن در بخش¬های مختلف بر عهده دارد. برای این که بتوان خشکسالی را از نظر کمی تعریف کرد، روش¬های متعددی ...
In the design theory for the relational data base model [6] the decomposition of a relation scheme according to some normal form has been advocated for as one means to avoid undesired redundancy and anomalies [7,8,16]. Desired characteristics of such a decomposition in the case of a relation scheme R with an associated set F of functional dependencies are the lossless-join property and the pres...
Rob Alba, Zhangjun Fei, Paxton Payton, Yang Liu, Shanna L. Moore, Paul Debbie, Jonathan Cohn, Mark D’Ascenzo, Jeffrey S. Gordon, Jocelyn K. C. Rose, Gregory Martin, Steven D. Tanksley, Mondher Bouzayen, Molly M. Jahn and Jim Giovannoni Boyce Thompson Institute for Plant Research, Cornell University Campus, Ithaca, NY, USA, Department of Plant Biology, Cornell University, Ithaca, NY, USA, Depart...
1 Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA, 2 Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK, 3 Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA, USA, 4 Biology Department, Colgate University, Hamilton, NY, USA, 5 Section Plant Biol...
The Saline versus Albumin Fluid Evaluation (SAFE) Study is a collaboration of the Australian and New Zealand Intensive Care Society Clinical Trials Group, the Australian Red Cross Blood Service, and the George Institute for International Health. The writing committee (Simon Finfer, M.B., B.S., Rinaldo Bellomo, M.B., B.S., M.D., Neil Boyce, M.B., B.S., Ph.D., Julie French, R.N., John Myburgh, M....
is a group of chemicals, including nitrogen mustards, acridines, nitroT::gnidine, azaserine, nitrofurazone, mitomycin, nitrous acid, and 2-aminopurine, which, despite their diverse chemical or physical properties (see review by FREESE, 1963), share many biological properties among themselves and with ultraviolet radiation (UV) in affecting microorganisms. They are mutagenic; several of them ind...
BACTERIA are readily killed by exposure to ultraviolet light (UV) , presumably as the result of the formation of UV photoproducts in the bacterial DNA. It is also known that pyrimidine dimers are among the photoproducts formed with a high yield, and that bacteria normally contain an efficient mechanism for the repair of DNA containing these products. Pyrimidine dimers are excised from DNA durin...
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