Abstract: A dosimetry assessment method for an organ at risk (OAR) in an esophageal radiotherapy plan includes: acquiring volumetric-modulated arc therapy (VMAT) plan data of a patient with esophageal cancer, and obtaining a distance-target histogram (DTH); subjecting a geometric feature vector of the DTH to dimension reduction to obtain a dimension-reduced geometric feature vector; establishing a deep belief network (DBN) model, and completing training the DBN model; non-linearly fitting a correlation between a dose feature vector and the dimension-reduced geometric feature vector to obtain a dose feature vector with a dimension being identical to a dimension of the dimension-reduced geometric feature vector; and reconstructing the dose feature vector through a decoding layer of an autoencoder structure to obtain a dose feature vector with a dimension being identical to a dimension of the geometric feature vector before the dimension reduction, and finally obtaining a dose-volume histogram (DVH) for predicting the OAR

Abstract: The present invention relates to an amine curable epoxy resin composition comprising: (A) epoxy resin component comprising: 8-31 wt % of diglycidyl ether of bisphenol A, 3-14 wt % of diglycidyl ether of bisphenol F, 1-5 wt % of monoglycidylether, 0.6-5 wt % of alkylsulphonic phenyl ester, 0.16-1 wt % of wetting and dispersing agent, 0.

Abstract: A water-proof coating system for reflecting solar radiation, which comprises optionally a base layer on a substrate and a reinforcing layer on the base layer; a white reflective and water-proof layer on the substrate or on the reinforcing layer; and a white decorative and reflective layer on the white reflective and water-proof layer; wherein the decorative and reflective layer is formed from a water-borne coatings comprising acrylic polymers, white infrared-reflective pigments and UV cross-linking agents. Water-borne coatings for forming the white decorative and reflective layer in the coating system, which comprise acrylic polymers, white infrared-reflective pigments and UV cross-linking agents. Said coating system can reflect solar radiation with high efficiency and effectively prevent water from penetrating through, has strong stain resistance and good weather resistance; has strong adhesion to various substrates. Said water-borne coatings can be applied easily, and are environment friendly.

Abstract: A water-proof coating system for reflecting solar radiation, which comprises optionally a base layer on a substrate and a reinforcing layer on the base layer; a white reflective and water-proof layer on the substrate or on the reinforcing layer; and a decorative and reflective layer on the white reflective and water-proof layer; wherein the decorative and reflective layer comprises colored infrared-reflective pigments. Water-borne coatings for forming a decorative and reflective layer in the coating system, which comprise acrylic polymers, colored infrared-reflective pigments and UV cross-linking agents. Said coating system can reflect solar radiation with high efficiency and effectively prevent water from penetrating through; has strong stain resistance and good weather resistance; has strong adhesion to various substrates; and also offers diversified colors for choosing. Said water-borne coatings can be applied easily, and are environment friendly.