background: two of the important radionuclides which are entered to environment and human diet are radium-226 (226ra) and cesium-137 (137cs). it is clear that the methods for preparation of foods such as peeling, washing, cooking or frying can affect the dose which is received by human due the to consumption of foodstuffs. an experiment has been performed at the environmental monitoring section...

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,...

introduction: the risk of morbidity and mortality increases in neonates admitted to the neonatal intensive care units (nicus). various factors contribute to the prognosis of these newborns. in the current study, we aimed to investigate the role of mode of delivery on short-term neonatal outcomes. methods: this retrospective study was conducted on 215 neonates admitted to the nicu of shohada-e-t...

Polyacrylonitril (PAN)-supported chitosan (CS) nanocomposite membranes were prepared by cross-linking the CS with 3-aminopropyl-triethoxysilane (APTEOS) via sol-gel method. Pervaporative performances of the CS-SiO2/PAN membrane for dehydration of aqueous alcohol solutions were investigated. From SEM cross-sectional images of the membrane, the spongy pores and the finger-like pores we...

When presented with random-dot displays with little depth information, observers cannot determine their direction of self-motion accurately in the presence of rotational flow without appropriate extra-retinal information (Royden CS et al. Vis Res 1994;34:3197-214.). On theoretical grounds, one might expect improved performance when depth information is added to the display (van den Berg AV and ...