Abstract: A rhein amide derivative and a preparation method and use thereof, and a drug for treating hepatocellular carcinoma (HCC) caused by a specific expression of RECQL4. The rhein amide derivative has a structure shown in any one of formulas I to IV. The rhein amide derivative has a relatively strong inhibitory effect on proliferation of HCC cells SNU-398 with RECQL4 high expression. Development of a novel anti-cancer drug for RECQL4 high expression-caused HCC and clinical personalized treatment of the RECQL4 high expression-caused HCC.

Abstract: A method and an apparatus for generating a widget are provided. This technical solution belongs to the field of network application technology. The method includes the following steps: the attribute information of the data to be obtained is created according to the web page specified by a user and the page fragment marked by the user on the web page (101); the structured data is obtained according to the created attribute information of the data to be obtained (102); the obtained structured data is converted to visual content (103). The apparatus includes a creation module, an obtaining module, and a converting module. By creating the attribute information of the data to be obtained and obtaining the structured data according to the created attribute information, this technical solution has the effect of meeting diverse user demands as far as possible.

Abstract: The present invention relates to prism-nonlinear optical crystal couplers for frequency conversion, including M pieces of nonlinear optical crystal and one coupling prism stuck to the incident surface or/and exit surface of the crystal by optical stick or a matching liquid. The coupling prisms are the same triangle prisms of right triangle prism, equilateral triangle prism, or inequlateral triangle prism, or are different triangle prisms. It is hopeful to obtain frequency 6th harmonic output.

Abstract: The present invention relates to prism-nonlinear optical crystal couplers for frequency conversion, including M pieces of nonlinear optical crystal and one coupling prism stuck to the incident surface or/and exit surface of the crystal by optical stick or a matching liquid. The coupling prisms are the same triangle prisms of right triangle prism, equilateral triangle prism, or inequilateral triangle prism, or are different triangle prisms. It is hopeful to obtain frequency 6th harmonic output.