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ObjectiveTo evaluate the effectiveness of tooth guide trainer software (TGT) on the teaching of shade matching to dental students. MethodsForty undergraduate students were included in this study. All of the students learned theory knowledge of shade matching firstly and then were divided into two groups with 12 boys and 8 girls in each group. Students in one group accepted shade matching training...
Constructing and tuning self‐organized three‐dimensional (3D) superstructures with tailored functionality is crucial in the nanofabrication of smart molecular devices. Herein we fabricate a self‐organized, phototunable 3D photonic superstructure from monodisperse droplets of one‐dimensional cholesteric liquid crystal (CLC) containing a photosensitive chiral molecular switch with high helical twisting...
Fan Transform is a new scrambing method and in this paper we do Fan Transform to the color image in position and gray, in this way the image became desultory and the image's texture characteristics and statistical information were also changed, since the Fan Transform have inverse transform we can also restore the original image[8]. And the difficulty of cracking scrambling is related to the type...
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