Background: Recent studies have shown that KIT is expressed in the cytoplasm of the spermatogonia, acrosomal granules and leydig cells. Reduction in KIT expression in oligozoospermia with an increase in the germ cell apoptosis process. Three single-nucleotide polymorphisms (SNPs) have been identified and these have been studied to discover KIT role in the male infertility. The aim of this study...

Background: Tssk2, a member of the testis specific serine/threonine kinase (TSSK) family, is expressed predominantly in the testis and crucial for the formation and function of the sperm cells in mouse. Targeted deletion of Tssk1 and 2 in male chimeric mice caused infertility due to haploinsufficiency of the genes. Therefore it is reasonable to postulate that mutations in its human homologue TS...

nowadays, scheduling problems have a considerable application in production and service systems. in this paper, we consider the scheduling of n jobs on a single machine assuming no machine idleness, non-preemptive jobs and equal process times. in many of previous researches, because of the delivery dalays and holding costs, earliness and tardiness penalties emerge in the form of linear combinat...

abstract because of relation between digestive enzyme activity and feeding of insects that directly is in relation with the damage of insects; studying digestive enzyme systems is important in finding new control methods based on inhibiting digestive enzyme activity. recently using transgenic plants containing enzyme inhibitors is important in improving resistance of crops to pests because of s...

nowadays, the concept of sustainable development has found a global application and attracted many parts andbasis of any community. among many factors affecting sustainable developments, educational system is remarkably effective in many ways. the effectiveness of the system is also a function of various factors and components. the managers and their management are one of the components playing...