Water cooling by ambient takes place with two mechanisms of heat and mass transfer. Using packings at wet cooling towers has disadvantages such as obstruction, reduction of life expectancy and production of algae and fungi. In shower cooling towers types of towers packings are completely removed and water intake is in direct contact and heat transfer takes place in two ways of latent and sensib...

car accidents are documented as a growing public health problem in iran as well as other developing countries. generally growing number of population and vehicles are not accompanied by extending road construction programs. these could be result in high death, disability, and economic loss in such country compare to develop one. this mainly affected young person who are economically more active...

cash transfer (cts) is an increasingly popular social protection mechanism used by many developing countries to improve the food security and nutritional status of lower socio-economic groups. this paper is a review of the literature regarding the impact of ct programs on the food security of recipient households in the developing countries, including iran. we looked for all original studies, p...

effect of cervical mucus aspiration with insulin syringe on pregnancy rate in art cycles     a. aflatoonian md1*, m. asgharnia md 2, n.tabibnejad gp3     1- associated professor, dept. of gynecology, university of medical sciences and research and clinical center of infertility, yazd, iran   2- assistant professor, dept. of gynecology, guilan university of medical sciences, rasht, iran   3- gen...

application of therapeutic gene transfer in the treatment of genetic diseases is a notable progress but there are some disadvantages and limitations in it. the process of overcoming these barriers is a drastic change in gene delivery. recently, calcium phosphate nanoparticles alone, or in combination with viral and nonviral vectors, were found to have a positive effect on gene transfer especial...

the objectives in the cold rolling process include improved sheet surface quality, enhanced steel mechanical strength, and better solidification operations. given the increasing demand for higher steel surface quality, more rapid production, and thinner steel plates, more attention has been directed toward the parameter of temperature in cold rolling as a means of achieving the above objectives...

background: natural endometrium in frozen-thawed embryo transfer (fet) may have some benefits upon implantation in patients with repeated implantation failure (rif). it might be due to possible differences between natural and stimulated endometrial growth factors and cytokins secretions. objective: the objective of this study was to compare the pregnancy rate of fet on modified natural cycle ve...

background: the role of embryo transfer (et) in the success of in vitro fertilization/intra cytoplasmic sperm injection treatment is not well understood. in the present study we classified et technique as difficult and easy types according to certain strict criteria, and compared the pregnancy outcome of the two et types.   methods: this study was performed retrospectively on 295 infertile pati...