Background & Aims of the Study: Due to one-way flow of water in rivers Guilan, pollution trade theory and the system of Ratio-Trade (TRS) and Streeter - Phelps equation has been used. This system, with a view of the river self- purification and how the distribution and transport of pollutants, determined Ratio-Trade system (TRS) between the units and using this method offers optimal pat...

The Economic Partnership Agreements between the African, Caribbean and Pacific countries and the European Union should serve as an opportunity to accelerate ACP global and regional trade integration and as an important tool for development and the eradication of poverty. There are, however, a number of preconditions. This article argues that institutional quality plays a key role in successful ...

Life-history theory posits a fundamental trade-off between number and size of offspring that structures the variability in parental investment across and within species. We investigate this 'quantity-quality' trade-off across primates and present evidence that a similar trade-off is also found across natural-fertility human societies. Restating the classic Smith-Fretwell model in terms of allom...

Many constraints of organismal design at the cell and organ level, including muscle fiber types, musculoskeletal gearing and control-surface geometry, are believed to cause performance trade-offs at the whole-organism level. Contrary to this expectation, positive correlations between diverse athletic performances are frequently found in vertebrates. Recently, it has been proposed that trade-off...

The issue of the integrity of edible oils and fats can be considered in three main areas of safety, authenticity and quality in accordance with the standardization approach. Safety is the most essential part of the food, including edible oils, due to effects on health of consumers. Authenticity equivalent to purity is also an important aspect of this approach. The nature and prevention of fraud...

a r t i c l e i n f o This study addresses the business-to-business (B2B) trade fair from a relationship marketing perspective. The main purpose is to comprehend buyer and seller interactions in the context of the trade fair, evaluating their impact on relationship quality and on the development of the relationship in the long-term. A research model is proposed with the underlying rationale tha...