use of nano-materials has increased in various aspects of human life. however, possible outbreak of nano-materials toxicity in humans and other organisms is one of the future challenges. different chemical precursors which are used in chemical approaches for production of nano-materials may have secondary and sometimes toxic effects in living organisms. these secondary effects may be reduced in...

In this study, we examined a scale-up to production of nickel perovskite catalyst, used in the conversion of natural gas to synt...

network scale-up is an indirect method for estimating the size of hidden, hard-to-count or high risk populations. social network size estimation is the first step in this method. the present study was conducted with the purpose of estimating the social network size of the tehran province residents and its determinants.maximum likelihood estimation was applied to estimate people's network sizes ...

background: more than a billion people have some form of disabilities worldwide. persons living with a disability have many needs (including physically, mentally, and socially needs). estimating the size of disabled population is a challenge in health systems. an innovative indirect method to estimate the size of populations is network scale up (nsu) having widely used for hidden populations. t...