Phytophotodermatitis is a cutaneous reaction caused by direct contact with phototoxic agents and subsequent sunlight exposure. Furocoumarins psoralens are 2 that can cause this reaction, these organic chemical compounds found in many plant species consumed humans. Following exposure to such foods ultraviolet radiation via sunlight, phytophotodermatitis occur. Due the etiology of rashes relating...

INTRODUCTION Vitamin D is essential for the maintenance of good health, and vitamin D deficiency has been reported from many countries, including those with a lot of sunshine. This study was conducted to evaluate the vitamin D status in healthy 6- to 7-year-old children in Isfahan, Iran. MATERIAL AND METHODS Five hundred and thirteen healthy children were enrolled. Serum PTH and 25-hydroxyvit...

growing tendency for urbanization and rapid development of the cities has resulted in urban neighborhoods obstructing the access of each other to the natural sources e.g. solar energy, natural ventilation. sunlight as the main part of input energy in urban energy balance equation and natural lighting is of vital importance. this paper attempts to achieve an optimum morphology for residential bl...