The effects of water current increment on rainbow trout ( Oncorhynchus mykiss ) culture were investigated   during a 35 day experiment. Fish weighing 5.5 g were stocked in aquarium tanks. Four different water speeds (0, 3.5, 7, 10.5 cm/s) were provided for each treatment in three replicates. These different currents water were provided by reusing outlet water of each culture unit...

this study analyzes the contribution of the sectoral total factor productivity growth (tfpg) and the input's growth to the iran's economy sectors growth during 1345 -1383. the major findings show that the average contribution of tfp growth to non-oil output's growth during first, second and third development plans has been 39.5%, 12.2% and 24.8% respectively, amounting to (as est...

 Beijing’s industrial structure is service-oriented with a high degree of economic openness, and GDP has maintained rapid growth. This paper analyzes the international financial crisis and the impact of China’s anti-crisis policies on Beijing’s economic development as well as its transmission mechanism. Impact Index (excluding seasonal factors) and ARMA Model are employed in the empirical...

Background: Given the concerns about the use of chemical preservatives in food, the consumers and producers have been interested in natural alternatives, such as plant essential oils and extracts. Since there are limited studies about the effect of saffron (Crocus sativus L.) on the behavior of foodborne pathogens in food models, this study aimed to determine the inhibitory effect of aqueous ex...

sulfur (s) is an essential macronutrient influencing plant growth, nutrient efficiency, quality and health of agricultural crops. the purpose of this research was to study the effects of s rates and sources on growth and fruit quality of apple (malus domestica l.) trees of ‘golden delicious’ at west azerbaijan, iran. experiment was conducted during four seasons (2003-2007), using a factorial ra...