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To complete the wiring operation of the main transmission line stripped of its insulating skin in a live power distribution system, a structured-light binocular vision method is utilized to identify and locate the line. First, aiming at the interference of the background information, a depth threshold segmentation method is used to filter the background area. Second, a mean filtering method is proposed to filter out the mismatch noise of a binocular vision camera in an outdoor environment. The Canny algorithm is then utilized to extract the contour, the central axis of the main transmission line is fitted, and the difference in the neighborhood pixel value is used to recognize the stripping area. Finally, the spatial equation and attitude of the central axis of the fitting transmission line are obtained along with the central coordinates of the stripping area, guiding the robot to carry out the wiring. [ABSTRACT FROM AUTHOR]

Purpose: To investigate the effects of DNA methyltransferase in mucoepidermoid carcinoma of human salivary glands tissues., Methods: Forty-three samples from mucoepidermoid carcinoma of salivary glands and 17 normal salivary gland tissues were collected from January 2010 to September 2013. Immunohistochemistry and Western blot were used to detect the expression of Dnmt1 and Dnmt3b in normal tissues and specimen of mucoepidermoid carcinoma of salivary glands. The data were analysed with SPSS 22.0 software package., Results: The positive expression rate of Dnmt1 in mucoepidermoid carcinoma tissue was 37.21%, and that in normal salivary gland tissues was 17.65%, there was no significant difference between them; the positive expression rate of Dnmt3b in mucoepidermoid carcinoma tissue was 83.72%, which was significantly higher than that in normal salivary gland tissue (11.76%, P<0.01). However, there was no significant correlation between high expression of Dnmt1 and Dnmt3b and clinicopathological parameters., Conclusions: Dnmt3b may play a role in the tumorigenesis of mucoepidermoid carcinoma in salivary glands.