فهرس المقالات ultrasonic phenomenon حرية الوصول المقاله صفحة الملخص نص كامل 1 - Experimental Investigation of the Magnetic Field Effect Using Fe3O4 Ferrofluid and the Study of the Ultrasonic Phenomenon in Solar Water Desalination Efficiency hamidreza goshayeshi kimya samadi Vahid Nejati Reza Saleh Issa Chaer