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in order to determine the critical period of weed control and investigation the effect of periodical control and interference of weeds natural population on yield and yield components of winter canola (brassica napus l. cv. okapi) in west region of tehran an experiment was carried out at research field of tarbiat modarres university, tehran, iran on 2004-5 growing season. fourteen experimental ...
in a military organization, the role of transportation should be much more strong and strategic character for the organization. in this context, the evaluation of operating ability of transportation and eliminate defects and problems, can help the managers to improve performance and increase the effectiveness and efficiency of transportation in the assigned missions. in this study, a model is p...
abstract: the potato tuberworm, phthorimaea operculella (zeller), is an important insect pest of potato (solanum tuberosum l.) in the storage and field in most parts of the world especially in tropical and subtropical regions due to its close relationship with the host, high reproductive potential and high economic losses. information on host preference, life table parameters and digestive en...
in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...
background: non-alcoholic fatty liver disease (nafld) is characterized by fatty change of liver without inflammation. the aim of this study was to evaluate presence of clinical and metabolic components in non-diabetic patients with nafld and to assess the relationship between insulin resistance and these factors. materials andmethods: in this study, a group of 50 sonographically confirmed patie...
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
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