نتایج جستجو برای: sample area
تعداد نتایج: 963786 فیلتر نتایج به سال:
the assessment of the quantitative and qualitative changes, the result of the impacts imposed by natural factors, and human interventions during specific sampling periods has a substantial influence on nature, management method and tending operation of every region’s forests. the present research was carried out in golestan province forests (iran) over an 11- year period and the obtained statis...
Small area estimation has received a lot of attention in recent years due to growing demand for reliable small area statistics. Traditional area-specific estimators may not provide adequate precision because sample sizes in small areas are seldom large enough. This makes it necessary to employ indirect estimators based on linking models. Basic area level and unit level models have been extensiv...
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
اسانس گیاهان خشک شده در سایه haplophyllum acutifolium، salvia chloroleuca به دو روش1.تقطیر با آب 2. روش میکرواستخراج فاز جامد با نمونه برداری از فضای فوقانی گرفته شد و سپس به روشgc/ms مورد آنالیز و شناسایی قرار گرفت. عمده ترکیبات اسانس گیاه haplophyllum acutifolium: stem oil (%) flower oil (%) leaf oil (%) ri compound with head space area %)) ri compound with hydrodistillation 19.19 17.55 3...
چکیده: فرض کنید که تابعی از اپسیلون یک مجموع نامتناهی از احتمالات موزون مربوط به مجموع های جزئی براساس یک دنباله از متغیرهای تصادفی مستقل و همتوزیع باشد، و همچنین فرض کنید توابعی مانند g و h وجود دارند که هرگاه امید ریاضی توان دوم x متناهی و امیدریاضی x صفر باشد، در این صورت می توان حد حاصلضرب این توابع را بصورت تابعی از امید ریاضی توان دوم x نوشت. حالت عکس نیز برقرار است. همچنین ما با استفاده...
In‐situ Monitoring of Flow‐Permeable Surface Area of High Explosive Powder using Small Sample Masses
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