Weilian Sun

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During the cutting machine’s work time, the wear of the cutting piece is a constant process of gradually wear. So it is difficult to ensure the accuracy and efficiency of processing. This paper introduces the principles and compositions of a linear CCD diameter measurement system, makes a non-contact automated on-line measurement for the grinding(More)
OBJECTIVE To investigate the effect of local delivery of delta12-prostaglandinJ2-loaded poly (lactic-co-glycolic acid) (Δ(12)-PGJ2-NC) on growth factors expression and bone formation. METHODS Δ(12)-PGJ2-NC was prepared by the emulsion solvent diffusion method. The physical and chemical properties of the nanoparticles were evaluated by particle size(More)
Tooth eruption is an orientating action which migrates teeth coronally during life, even in bone or after occlusion contact is lost. The eruption pathway is due to bone resorption near the enamel crown and bone deposition around the cementum-covered roots. Due to their proximity to bone resorption and deposition, we hypothesize that the hard tissues enamel,(More)
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