نتایج جستجو برای: agropastoral systems
تعداد نتایج: 1183457 فیلتر نتایج به سال:
To address the problems of soil acidity (pH values below 4.4) in surface and subsurface layers improve chemical fertility, this study evaluated three methodologies for application limestone (LS) (ensuring that calcium (Ca)2+ occupied 70%, 60% or 50% cation exchange capacity (CEC) at a depth 0.0–0.2 m) gypsum (GP, phosphogypsum) Ca2+ 60%, 40% effective (ECEC) 0.2–0.4 m). LS GP were applied conve...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
which dominates most of the economies in the region, relies heavily on the livestock subsector for its contribution to the gross domestic product (GDP), estimated at 32 percent in the last decades for the region as a whole (Winrock International 1992). The region's growing population relies heavily on livestock products for their daily dietary requirement. The provision of draught power and man...
unstable angina has progressive process and even in rest time, it happens frequently. it is a serious situation and 15-20 percent of patients are dying in duration of one year. treatment: patients often hospitalized because observation of their reactions to treatment is easier in hospital. treatment plan must be explain for them carefully. when patient’s situation due to anxiety is critical, be...
The main goal of this paper is to present results preliminary archaeological research on the south side Lake Issyk-Kul in Kyrgyzstan. We test hypothesis that agropastoral land use changed over four millennia from Bronze Age through Kirghiz period due economic, socio-political, and religious shifts prehistoric historic societies region. Our objectives are to: (1) describe analyze survey Lower Ki...
Archaeologists interested in the evolution of anthropogenic landscapes have productively adopted Niche Construction Theory (NCT), order to assess long-term legacies human-environment interactions. Applications NCT especially been used elucidate co-evolutionary dynamics agricultural and pastoral systems. Meanwhile, foraging and/or highly mobile small-scale communities, often thought as less inte...
در سال های اخیر به دلیل افزایش دمای متوسط کره زمین، بشر به دنبال روش های جایگزین برای تامین توان الکتریکی مورد نیاز خود بوده و همچنین در اکثر نقاط جهان سوزاندن سوخت های فسیلی در نیروگاه های حرارتی به عنوان مهم ترین روش تولید توان الکتریکی مطرح بوده است. به دلیل توجه به مسایل زیست محیطی، استفاده از منابع انرژی تجدید پذیر در سال های اخیر شدت یافته است. نیروگاه های بادی به عنوان یک منبع تولید توان...
OBJECTIVE The current study was conducted to assess experienced risk factors and perceptions of mycobacterial diseases in communities in northern Tanzania. METHODS We conducted a cross-sectional study in Arusha and Manyara regions in Northern Tanzania. We enrolled tuberculosis (TB) patients attending Mount Meru Hospital, Enduleni Hospital and Haydom Lutheran Hospitals in Arusha municipality, ...
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