نتایج جستجو برای: x rays

تعداد نتایج: 646783  

ژورنال: مجله دندانپزشکی 2015
داوودمنش, زینب, سناعی, فهیمه سادات, شمس, فرشید, عزیزی, نسیم, پیمانی, علی,

Background and Aims: According to concerns of technical errors in intraoral radiographs and reports of positive effects of central ray laser pointer on the students, technical errors and shortcomings of earlier research, this study was conducted at Department of Oral and Maxillofacial Radiology of Tehran Azad University to determine the role and use of laser pointer in the technical error mad...

Journal: :Environmental Health Perspectives 2000

H Mohammadi S Mehdizadeh Sh Derakhshan

An extensive study was undertaken to Investigate on the overall film badge service performance with which occupational radiation, exposures are reported In Iran, The study involved the analysis of film badges exposed to x-and gamma rays and beta particles. For test exposures, x-rays between 60 and 140 KVPCo-60 gamma radiation and Sr-90 beta particles were used. The actual delivered dose equival...

Journal: :The Journal of the American Dental Association 2019

Journal: :Nature 1987

Journal: :BMJ 1970

Journal: :Proceedings of the National Academy of Sciences 1924

Journal: :Science 1896

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید