نتایج جستجو برای: spatial distribution
تعداد نتایج: 914935 فیلتر نتایج به سال:
Dust is influenced by the interaction of the atmosphere-Earth system and, by changing radiation energy, atmospheric chemistry and physics, affects the climate of an area. Due to the necessity of the role of dust and its spatial-dynamic distribution in the atmosphere of a region, as well as the existence of advanced remote sensing techniques and modeling in the field of dust simulation, the pres...
Some bioecological aspects of grape leafhopper, Arboridia kermanshah Dlabola, including: the egg distribution under the leaf surface, eggs and nymphs spatial distribution on the vine arms, the adult distribution on three strata of the vine canopy, the adult diel activities and the geographical distribution of this species in Isfahan province were studied. Samplings were done in the 1997. The eg...
Water resources such as wetlands, in addition to their economic and social importance, are ecologically valuable sources of aquaculture production. Due to its effects on aquatic environments, necessity of monitoring and awareness of the spatial and temporal distribution of chlorophyll-a is important for environmental studies. In the new approach to such studies, application of spatial statistic...
درصد قابل توجهی از زمینهای تحت آبیاری جهان در مناطق خشک و نیمهخشک دنیا واقع شده است که در این مناطق، غالب خاکها حاوی مقدار زیادی نمک هستند. در ایران شوری از مهمترین مشکلات کشاورزی بهشمار میرود. لذا این تحقیق با هدف ارزیابی و تحلیل تغییرات مکانی شوری خاک بهعنوان یکی از جنبههای تخریب خاک و تهیهی نقشهی پراکنش مکانی شوری و همچنین بور خاک انجام شده است. منطقه ی مورد مطالعه، در شمالغربی ش...
چکیده ندارد.
Lectin binding histochemistry was performed on the developing sympathetic ganglionic cells to investigate the distribution and density of defined carbohydrate terminals on the cell surface glycoproteins during autonomic system morphogenesis. Sprague-Dauley rat embryos from 9th gestational day to birth were fixed and paraffinized. Serial sections of these specimens were incubated with different ...
Background The provision, maintenance and promotion of the health of infants as a vulnerable group in health care services are a high priority, and the first step in reducing infant mortality and improving their health is undoubtedly the identification of their mortality status. We aimed to study the spatial distribution of premature infant mortality in 194 count...
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