Abstract: Disclosed are a gene model for judging prognosis of hepatocellular carcinoma and a construction method and use thereof. According to the present invention, genes with differential expression are obtained by comparing data of hepatocellular carcinoma patient samples with transcriptome data of normal patient samples, and after integration with an extracellular matrix gene set, a LASSO-COX regression model is reduced to obtain a model of 18 genes. The model of the present invention can evaluate the prognosis of hepatocellular carcinoma patients, distinguish and select patients with poor prognosis, so as to guide clinicians to provide more active treatment schemes, and meanwhile avoid over treatment of low-risk hepatocellular carcinoma patients. The gene model helps to construct a tissue chip based on extracellular matrix genes, which can quickly evaluate the prognosis of the hepatocellular carcinoma patients after surgery and realize clinical transformation.

Abstract: A control method for digital light processing (DLP) printing based on an absorbance of a photocurable material includes: adding a light absorber to a photocurable material for DLP printing, measuring a liquid absorbance and a solid absorbance per unit thickness of the photocurable material at different concentrations of the light absorber, calculating an actual solid-liquid absorbance ratio, and comparing the ratio with a theoretically predicted value of a solid-liquid absorbance ratio to obtain an actual concentration of the light absorber in the photocurable material; measuring a curing threshold time of the photocurable material, substituting the solid absorbance per unit thickness, the liquid absorbance per unit thickness and the curing threshold time into a single-layer curing model to obtain a relationship between an exposure time tT and a curing thickness H; this method can accurately obtain the exposure time corresponding to the thickness of any material that needs to be printed.

Abstract: A control method for digital light processing (DLP) printing based on an absorbance of a photocurable material includes: adding a light absorber to a photocurable material for DLP printing, measuring a liquid absorbance and a solid absorbance per unit thickness of the photocurable material at different concentrations of the light absorber, calculating an actual solid-liquid absorbance ratio, and comparing the ratio with a theoretically predicted value of a solid-liquid absorbance ratio to obtain an actual concentration of the light absorber in the photocurable material; measuring a curing threshold time of the photocurable material, substituting the solid absorbance per unit thickness, the liquid absorbance per unit thickness and the curing threshold time into a single-layer curing model to obtain a relationship between an exposure time tT and a curing thickness H; this method can accurately obtain the exposure time corresponding to the thickness of any material that needs to be printed.