Condition-based maintenance decision-making of transformers is essential to electric enterprises for avoiding financial losses.However, precise transformer condition assessment was tough to accomplish because of the negligence of the influence of bushing and accessories, the difficulty of fuzzy grade division, and miracle academy clothing the lack
Nakhlak lead mine is located at the Nakhlak mountain 55 km NE of Anarak town in Isfahan province.The rosy teacup dogwood mineralogy is simple; galena and barite are the main primary minerals and cerussite is the main secondary mineral.Sphalerite, pyrite, chalcopyrite, tetrahedrite-tennantite and acanthite occur as minor and trace mineral inclusions
Introduction: Aesthetic materials for direct restorations can suffer changes in the oral cavity due to multiple factors acting at this level.The aim of the study was to demonstrate that aesthetic materials undergo structural changes in fp9550bk texture and chemicals, depending on the nature of the extrinsic factor, concentration, and exposure time.