Analysis of transport phenomena and electrochemical reactions in a micro PEM fuel cell with nature inspired flow field design.rnWind energy potential of Marmara region in Turkey.rnThe spatial distribution of dust sources in Iraq by using satellite images.rnDecomposition analysis of industry sector CO2 emissions from fossil fuel combustion in Kazakhstan.rnCosting energy efficiency improvements in buildings case study: Brasov, Romania.rnExergoeconomic optimization of an irreversible regenerated air refrigerator with constant-temperature heat reservoirs.rnPerformance analysis of an endoreversible rectangular cycle with heat transfer loss and variable specific heats of working fluid.rnNatural convection in a room with two opposite heated vertical walls.rnAnalytical performance investigation of parabolic through solar collector with computed optimum air gap.rnNajaf, new saffron homeland.