today, due to the direct and reverse logistics plays an important role in reducing the costs in supply chain. in this paper, in order to provide a closed-loop supply chain network including supply centers, production, distribution, collection, recycling and disposal of a used linear mixed integer programming. this paper to consider multi-period and multi-product in multi-level supply chain and ...

Tahini is a food product that frequently preferred both directly and as main ingredient in various ready-to-eat products consumed with interest, especially the Middle East geography. Its reputation has recently spread across continents to countries like Canada United States of America. was subjected number analyses ascertain its physicochemical microbiological quality within context study since...

Background and Objectives: Traditionally, depression among adolescents has been considered uncommon, with around 5% estimated to suffer from depressive disorder. The purpose is to investigate occurrence and psychological correlates for depressive symptoms in male and female high school adolescents in urban and rural settings. Methods: Participants were 1,069 high school students (response rate ...

Morton, Marcus, and Frankish (1976) report that listeners hear acoustically isochronous digit sequences as anisochronous. Moreover, given a chance to adjust intervals in the sequences until they are perceptually isochronous, the listeners introduce systematic deviations from isochrony. The present series of studies investigates these phenomena further. They indicate that when asked to produce i...