The forty-year history of agricultural production co-operatives in Iran shows that this type of exploitation system has faced with many challenges during this period. First, despite the help and support by the government, the co-operative sector has not been able to play a major role in the development of the country, and its share has not exceeded 3% of the development program. The Purpose of ...

This study was performed to evaluate the Tc-pyp SPECT role in determination of AMI severity and extension. Pyp SPECT imaging was done for 54 patients with AMI, who met the WHO criteria. SPECT findings were correlated with LVEF measurements. The abnormal scan was graded according to the intensity and was compared with the activity of the sternum in the same image. In addition, a segmental ...

diversity, accessibility and reliability are the three main factors governing the adoption of information sources by farmers in rural areas. based on the research hypothesis, the existing knowledge and information delivery system in the agricultural sector, functions far below the ever changing nature and tangible needs of existing farming systems. the main objective in this study is to determi...

Reef-building corals show a marked decrease in total species richness from the tropics to high latitude regions. Several hypotheses have been proposed account for this pattern context of abiotic and biotic factors, including temperature thresholds, light limitation, aragonite saturation, nutrient or sediment loads, larval dispersal constraints, competition with macro-algae other invertebrates, ...