For preparation of an effective sunscreens three nanoparticles were added to the matrix for suitable improving of sun absorption. In this study, different types of hollow TiO2, ZnO, Fe2O3 were synthesized by sol-gel method. ...

In this study, ZnFe2O4, ZnO nanoparticles and nanocomposites of ZnFe2O4–ZnO (core-shell) have been made via simple coprecipitation manner which is a rapid, inexpensive and economical method, impact of green surfactants ...

Desalination could be a sustainable solution for responding to the ever-rising demand for water and the scarcity of freshwater resources. But given the substantial energy consumption of conventional desalination methods, ...

In this paper, a system of simultaneous production of power and heat and cooling in a Kalina cycle has been analyzed by energy, exergy and economic aspects. To provide heat in the cycle heating unit, four types of solar ...