background: pentoxifylline (px) prevents camp breakdown by inhibiting the activity of the camp-phosphatase and presumably, stimulates sperm motion. incubation with px causes hyperactivation of sperm, an important step in achieving fertilization, and leads to changes in membranes associated with sperm capacitation. objective: the purpose of this study was to examine the effects of pentoxifylline...

food preservation has always been a concern for mankind. different methods have been developed to preserve food for long periods, such as cold storage, plastic covers, and modified atmospherethis study examined the physicochemical and biological effects of a modified atmosphere on packaged romaine lettuce at three levels (g1: 40% oxygen, 15% carbon dioxide, 45% nitrogen; g2: 70% oxygen, 15% car...

premature ejaculation (pe) is one of prevalent male sexual dysfunctions worldwide. despite many psychiatric backgrounds, yet there are speculations about organic etiologies considering both anatomic and physiologic points of view. this survey assesses effect of frenular web preservation on premature ejaculation. one thousand and forty otherwise healthy men being visited for urolithiasis (asympt...

This study models a joint pricing, inventory, and preservation decision-making problem for deteriorating items subject to stochastic demand and promotional effort. The generalized price-dependent stochastic demand, time proportional deterioration, and partial backlogging rates are used to model the inventory system. The objective is to find the optimal pricing, replenishment, and preservation t...

purpose: to evaluate the influence of donor characteristics (age, death-to-preservation time, preservation-to-surgery time, graft rating, and endothelial cell features) on clinical outcomes following deep anterior lamellar keratoplasty (dalk) in patients with keratoconus. methods: in this retrospective study, 290 consecutive keratoconic eyes underwent dalk using donor corneas of different quali...

purpose: this study evaluated the effect of donor and eye bank characteristics on graft rating and clinical outcomes after penetrating keratoplasty (pk) in keratoconus-affected patients. methods: a total of 252 consecutive keratoconic eyes that underwent pk were reviewed in this retrospective interventional case series. donor data included age and sex, cause of death, death-to-preservation time...