among several pests of rice as one of the main agricultural products in iran, rice borer, chilo suppressalis is one of the most important pests of this crop. use of pesticides coincided with the occurrence of this pest in the northern region of iran in 1972. at present in order to control this pest, more than 12000 tones of pesticides granules are used annually. ecological effects of pesticides...

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evaluation diversity of agricultural plants and effectiveness of management factors in non-hunting of gharaviz abstract biodiversity is the basis of agriculture. sustainable agriculture both promotes and is enhanced by biodiversity. during present study, agrobiodiversity and management factors were investigated in three villages of gharaviz area and four villages in surroundings area, in sarpol...

industrial waste management is one of the most properly approaches which make industry and environment collaborating and coacting as well as reduce impacts of industry on environment. in this study, present management of yazd industrial township located in yazd province was studied. in order to properly manage and control waste production, questionnaires were used to collect data regarding type...

the structural and energetic characteristics of o3–h2o complexes have been investigated by means of b3lyp, mp2, mp4(sdtq), ccsd(t) and qcisd(t) methods in conjunction with the aug-cc-pvdz and aug-cc-pvtz basis sets. six conformers were found for the o3–h2o complex. two different intermolecular interactions were expected to participate in the formation of complexes, namely conventional o∙∙∙h hyd...

background unlike congenital auricular malformations which are identified by underdevelopment of dermal and cartilaginous tissues, deformed ears are less sever congenital anomalies characterized only by a misshaped pinna structure and can be improved with acceptable cosmetic results and minimal cost through ear molding if treated in early neonatal period. in this study, authors present the firs...

the present study is intended to examine the effect of accounting conservatism on firms’ non-profitability in tehran stock exchange in 48 unprofitable firms and 57 profitable firms over a period of seven years from 2001 to 2007. this study was conducted according to givoly and hayn model to measure accounting conservatism index in non-profitable and profitable) firms. data analysis performed wi...