Nowadays, polymer nanofibers have gained attention due to remarkable characteristics such as high porosity and large surface area to volume ratio. Among their fabrication methods, electrospinning technique has been attracted as a simple and reproducible approach. It is a versatile, simple and cost-effective technique for the production of continuous nanofibers with acceptable characteristics su...

Background: Maximum infertility as the inability to conceive after one year of marriage without the use of contraceptive means. About 12-8% are couples without children, 35% of male infertility is just as relevant to their In addition, approximately 25% of infertile couples are men and women are involved Materials and Methods: This study was a descriptive - analytical and the study of 50 pregna...

Background & aim: Cesarean section (CS) rates have been increasing steadily, worldwide. The knowledge and attitude of health professionals towards natural childbirth and CS are important factors in selecting a mode of delivery. The purpose of this study was to determine the knowledge and attitude of midwifery and nursing students towards different modes of delivery. Methods:In this descriptive,...

abstract background: many factors have been mentioned to influence decision‑making for different kinds of delivery. decision‑making for vaginal delivery is under the influence of culture, perceptions, beliefs, values, attitudes, personalities, and knowledge. the current study aims at exploring the determinants of decision‑making for vaginal delivery in the north of iran from women’s perspective...

An increasing dependence on natural gas has amplified existing vulnerabilities to the power grid, including disruptions transmission networks from and man-made disasters. To address operational challenges arising these disruptions, we consider problem of estimating steady-state operating capacity a damaged pipeline network while ensuring maximal delivery load. Specifically, formulate mixed-inte...