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various methods have been used to economically design wastewater and stormwater collection systems. in this article, discrete differential dynamic programming (dddp) which is a subsection of dynamic programming (dp) was used. for each pipe network, various alternatives such as depth and slope of pipe laying and various diameters could be considered to satisfy hydraulic and engineering constrain...

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background to treat viral infection of chronic hepatitis c (chc) is a main strategy to prevent progression of liver disease, and cancer. some patients with chc have failed to respond to the common antiviral therapy in different populations. objectives in the current study it was aimed to find out the possible role of multiple drug resistance gene1 (mdr1) in non-responder patients with chc infec...

immigration i s a n important subject which h as always attracted the attention of critics and authors . tahar ben - j e l l ou n , t h e french author , i s o ne such instance . h is opinion is exceptiona l . with downcast eyes i s a masterpiece by this author . i n this masterpiece , h e displays the problems o f a n african girl in two parts ( before and after immigration ) . the setting of ...