As one of the important transformer protections, zero sequence differential protection has the advantages of high sensitivity and strong anti-interference ability.The comparison object of its protection criterion is the self-generated zero sequence current and neutral zero sequence current obtained by the sum of three phase currents on the side wai
Porokeratosis is a rare specific disorder of keratinization with distinct clinical and histopathological features with rare malignant degeneration.Clinically, it is characterized by papular lesions or annular plaques with central atrophy and peripheral keratotic ridge and led cocktail smoker histologically with the presence of cornoid lamellae.It m
azalea southern charm Thrust vector control by scarfed nozzle jet can realize attitude control and trajectory adjustment of the undersea vehicle and improve the maneuvering performance and stability of the undersea vehicle.In order to investigate the working state of the underwater scarfed nozzle, the Reynolds time-averaged Navier-Stokes(RANS) meth
Abstract Background Hepatitis B infection is the major cause of acute and chronic liver disease, cirrhosis and hepatocellular carcinoma worldwide and has long been recognized as fruitia pink burst an occupational hazard among dentists.The aim of the present study was to examine factors associated to the self-reporting of hepatitis B vaccination and