نتایج جستجو برای: uses area
تعداد نتایج: 812673 فیلتر نتایج به سال:
Planning, construction and assessment of road network are among the investigations for infrastructure development at watershed scales. The main aim of this study is assessing the road network connectivity in the Chehel-Chay Watershed, located in Golestan Province using Alpha (α), Beta (β), Gamma (γ), Eta (η), network density and detour indices in graph theory. The available road network ma...
چکیده : دو گیاه perovskia abrotanoides karel و zeravschania aucheri در سایه تحت جریان ملایم هوا خشک شدند. اسانس گیری از گیاهان خشک شده توسط دو روش تقطیر با آب و میکرواستخراج فاز جامد در فضای فوقانی انجام گرفت و اسانس ها با استفاده ار روش کروماتوگرافی گازی- طیف سنج جرمی (gc-ms) مورد تجزیه و تحلیل قرار گرفتند. ترکیبات عمده شناسایی شده در اسانس برگ و گل و ساقه گیاه p.abrotanoides عبارتند از: ...
A transistor sizing algorithm for row-based layouts is presented under a improved area model. This algorithm uses convex programming to nd a minimal area circuit for a given delay speci cation. The new area model uses a concept of row heights as opposed to the conventional metric of sum of gate sizes. Results over a number of circuit indicate a signi cant reduction both in the minimum delay ach...
bazargan and poldasht plains are located in the north of west azarbaijan, northwest of iran. in this area, groundwater supplies main water demands. aim of this research is assessment of aquifer vulnerability for contamination potential on the basis of hydrogeological conditions of the study area. for this purpose the combined use of the drastic and geographical information system (gis) demonstr...
road network (rn) can affect patterns and distribution of land uses and covers. road network expansion has both direct and indirect impacts on land uses and covers changes. agricultural land conversions (alcs) are especially known as one of the main important types of land use changes. the purpose of this paper, in addition to estimation of the direct impact of rn expansion on alcs, is to evalu...
heavy metals in high concentrations in soils are potential health risk for humans, animals, and plants. soil samples were collected in five replicates from 20 points with four land use including: roads, refineries, residential area (sadra town), and farmland. heavy metals were determined using flame atomic absorption (analyticjena), while dtpa was chosen as trace elements extractor. in this stu...
Population growth and urbanization development are the main triggering factors of changes in urban land uses. These, in turn, result in changes in the components of radiation balance. The present study tries to analyze the role of urban land uses in radiation balance by calculating net radiation and its analysis. For this purpose, the Landsat 8 satellite image of 2016 was used. Characteristics ...
Extended abstract 1- Introduction Land use includes all types of land uses to meet different human needs. In other words, land use refers to the type of human use of land, and this type of use is related to the value of the land and (its) natural characteristics. To understand and identify, land use changes using satellite data to provide a broad and integrated view of an area, reproduci...
Introduction: Awareness of soil quality in agricultural lands and natural resources is essential to achieve maximum production and environmental sustainability. Although soil quality is not directly assessed, soil quality indicators are widely used today, including the physical indicators which are of great importance in measuring the soil quality, as they directly influence the plant growth an...
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