نتایج جستجو برای: karkhe
تعداد نتایج: 20 فیلتر نتایج به سال:
karkhe watershed (kw) with more than 5 million hectares recently encountered many problems in the natural, social and man-made habitats. unsuitable use of land, soil erosion and lack of rainfall are the most destructive factors in this watershed affecting the whole region fundamentally. as expected, these problems have caused a considerable fall in biodiversity in fauna and flora, a decrease in...
Deposition of sediment inside the conduit structures reduces the flow cross section area and increases the flow roughness which causes reduction of flow discharge passing through the conduit. Among the methods which can prevent sediment deposition is non sedimentation condition in the structure, Since the critical section of the inverted siphon in sedimentation is the outlet. In the begining of...
The most important role that the managed areas will play to attain sustainable development goals would be protecting ecosystem and genetic diversity to achieve the scientific, aesthetics, social and economic potential benefits in future. Proper management of protected areas requires a full understanding of the present conditions, detailed and exact implementation, planning, regular monitoring a...
In this study, in order to determe low flow conditions in Karkhe watershed, 5 indices of Q7,10, Q7,20, Q30,10, Q4,3 and Q95 were used for analyzing 12 hydrometric station data in the years of 1345-46 to 1380-81. Discharge data homogeneity was performed by Run Test. The Q95 index was determined by flow duration curve (FDC) and other indices were determined using 4, 7 and 30-day low flow frequenc...
The water supply is the crucial problem of human beings in the world. Earth dams are usually the most important structures to store and manage the main sources: surface waters. The safety of earth dams in different conditions especially under earthquake loadings plays a vital role in sustainable developments. Recently, mixed-clay soil is widely used as water- seal material in the core of earth ...
In recent years, the joint distribution properties of drought including severity and duration have been widely evaluated using copula. Few studies, however, have worked on drought modeling based on stream flow, especially in semi-arid regions such as the southern regions of Iran. This study followed two purposes. The first purpose was to find the appropriate marginal distribution function for h...
Barley next to wheat is the most important and widely adapted food cereal in the lower parts of Karkhe River Basin. This crop is one of the most salt-tolerant crop species. Varieties of the crop differ considerably in their ability to tolerate salinity. These differences can be used for selecting high yielding varieties under saline conditions. A field experiment was conducted in Dasht-e Azadeg...
from Karkhe river (khouzestan , Iran) were determined. 84 sample were collected in the middle month of each season and Total fatty acid compositions were investigated by a gas chromatographic method. . The most abundant fatty acids in the (SFAs) of the liver and muscle were at the highest in the autumn and spring, respectively. The total monounsaturated fatty acids (MUFAs) were at the highest ...
This research was conducted with the aim of identifying the gender identity of women in the movies of war period. Four movies of ‘Bashu little stranger’, ‘Gilaneh’ and ‘from Karkhe to the Rhine’ were selected and the kinds of women's identity were identified by using discourse analysis in these movies. In these movies, although women tried to fulfill the expectations of society in the form of t...
this research was conducted with the aim of identifying the gender identity of women in the movies of war period. four movies of ‘bashu little stranger’, ‘gilaneh’ and ‘from karkhe to the rhine’ were selected and the kinds of women's identity were identified by using discourse analysis in these movies. in these movies, although women tried to fulfill the expectations of society in the form...
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