نتایج جستجو برای: us department of agriculture
تعداد نتایج: 21198995 فیلتر نتایج به سال:
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
در حالت کلی معادلات دیفرانسیل با مقادیر اولیه را نمی توان دیفرانسیل می توان جواب طیف وسیعی از مسائل کاربردی را مشخص نمود با روش های تئوری حل نمود، لذا با حل عددی معادلات یک حالت خاص از مسأله مقدار اولیه، مسأله ای به فرم: y^=f(x,y) , y(a)=?, y^ (a)=?^^ است که مشتق اول در آن ظاهر نمی شود. این معادلات طیف وسیعی از پدیده های اطراف ما را شامل می شود، مثلاً معادلاتی که دارای جواب نوسانی هستند از ...
Abbreviations: BRAD: US EPA Biopesticides Registration Action Document, EA: Environmental Assessment, EC: European Commission, EPA: US Environmental Protection Agency, FAO: U.N. Food and Agriculture Organization, FDA: US Food and Drug Administration, FFDCA: Federal Food, Drug and Cosmetic Act, FIFRA: Federal Insecticide, Fungicide and Rodenticide Act, GE: genetically engineered, MRID: Master Re...
a Department of Emerging Infectious Diseases, the US Army Medical Research Unit, Kenya b Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Kenya c Kenya Medical Research Institute, Kenya d Department of Biochemistry, School of Medicine, University of Nairobi, Kenya _____________ * Corresponding author: Department of Emerging Infectious Diseases, US Army Medical...
three medium magnitude events happened inside the transitional border of south alborz and central iran; namely kahak-qom 2007/06/18 event with ml 5.6, zanjan 2008/05/27 event with ml 5.3 and aradan-garmsar 2007/11/19 event with ml 5.1. this provides us the opportunity to compute focal mechanism and stress drop of the events and compare them with those events happened within the alborz range.
Journal of Environmental Science and Health, Part B Pesticides, Food Contaminants, and Agricultural Wastes Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713597269 Review of potential environmental impacts of transgenic glyphosate-resistant soybean in Brazil Antonio L. Cerdeira a; Dionsio L. P. Gazziero b; St...
The global research and development community in general as well as most of the farmers worldwide are at a crossroad, and must decide on the question: which way forward with agriculture in the 21 st century? The empirical evidence provided by the farming communities as presented in this paper tells us that farmer-led transformation of agricultural production systems based on Conservation Agricu...
let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...
X.-Z. HUANG *, M. A. CHAHINE, J. G. FRYE , D. M. CASH , E. P. LESHO, D. W. CRAFT 1, L. E. LINDLER3 AND M. P. NIKOLICH 1 1 Division of Bacterial and Rickettsial Diseases, Walter Reed Army Institute of Research, Silver Spring, MD, USA 2 Bacterial Epidemiology and Antimicrobial Resistance Research Unit, Agriculture Research Service, US Department of Agriculture, Athens, GA, USA 3 Chemical Biologic...
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