نتایج جستجو برای: central plains of iran
تعداد نتایج: 21211333 فیلتر نتایج به سال:
In recent decades, there has been growing interest among farming and scientific communities toward integrated crop– range–livestock farming because of evidence of increased crop production, soil health, environmental services and resilience to increased climatic variability. This paper reviews studies on existing cropping systems and integrated crop– range–livestock systems across the USA which...
The Great Plains are sometimes characterized as an economically lagging region. To shed some light on the region sprospects, the locational and structural changes in employment patterns in the northern and central Great Plains were examinedfor the 1980 to 1990 period. County-level data were drawn from CD-ROM census publications and matched with locational references using Atlas *GIS . Shift-sha...
the present dissertation aims to investigate four-word lexical bundles in applied linguistics research articles by iranian and internationally-published writers. the aims of this study are two-fold: first of all, attempts have been made to create a comprehensive list of the most commonly used four-word lexical bundles categorized by their type and token frequency, their structural characteristi...
Biological fertilizers are compounds comprising various free living microorganisms that are able to change the basic nutrients into available form through biological procedures. Being an important source of nutrients in sustainable agriculture, these fertilizers lead to better seed germination and development of root system. In order to investigate the effect of biological fertilizers on the me...
A great number of towns and villages are established along the rivers and especially on the terraces made by rivers. Under the influences of the river’s dynamic and discharge changes, these lands are constantly exposed to dangers such as the flood and instability of the river bed caused by the river meandering movements. Therefore, examining the meandering pattern of the rivers is necessary in ...
Soil surface roughness (SSR) is one of the important factors in wind and water erosion studies and control. Several parameters such as surface rock fragments influence SSR. Main objectives of this paper are to study and compare (Allmarass) random roughness (RR) and tortuosity (Tb) indices in coarse, medium and fine grain plains of Yazd-Ardakan and investigate the relationship between indices an...
this study is an outlook of iranians religious practices and customs in eras such as nasser one. it attempts to answer the main question, "religious practices and ceremonies in the society during naseri ruling" and other subsidiary questions with scientific and historical theories. iran was a traditional and religious community . people abided by their religious practices and duties within reli...
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