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 hair remover is provided, including a main body, a positioning member, a mounting member and a blade assembly. The positioning member is mounted on the main body. The mounting member has one end connected to the blade assembly and one other end received in the positioning member and movably connected thereto. The mounting member defines a receiving chamber. At least one through hole communicating with the receiving chamber is defined on a periphery of the mounting member. The mounting member is slidable to enable the positioning member to completely cover the through hole.

Abstract: Disclosed is a massage beauty instrument, which includes a main body. The main body includes a host and a beauty massage head connected to the host. The beauty massage head is provided with a vibration portion therein. The vibration portion includes a driving motor fixed in the beauty massage head, a first eccentric wheel and a second eccentric wheel connected in series to both ends of an output shaft of the driving motor, respectively.

Abstract: The present disclosure provides an analysis method for a closed-loop supply chain (CLSC) with dual recycling channels. The analysis method includes: step S1: constructing recycling function models for dual recycling channels; step S2: constructing a decision model for a non-subsidized CLSC with dual recycling channels and a decision model for a subsidized CLSC with dual recycling channels respectively; step S3: obtaining optimal decisions of a manufacturer, the retailer and the online recycling platform in the non-subsidized CLSC with dual recycling channels and optimal decisions of the manufacturer, the retailer and the online recycling platform in the subsidized CLSC with dual recycling channels; and step S4: determining an influence law of a subsidy on the optimal decisions of the manufacturer, the retailer and the online recycling platform in the CLSC with dual recycling channels through a comparative analysis.

Abstract: A multi-spectral light generating unit, a fundus imaging system, and a fundus imaging method. The multi-spectral light generating unit includes one or more illumination units and a control unit; each illumination unit includes a light-emitting diode matrix, each light-emitting diode matrix emits light of multiple wavelengths; converting, by the control unit, the control instruction sent by the central controller into a control signal; triggering, by the control unit, the specified light-emitting diode matrix of the specified illumination unit to emit light of a preset wavelength and preset energy to output the multi-spectral light.

Abstract: Methods for forming composite objects, wherein the methods comprise providing a plurality of material particles, applying a liquid adhesive to at least a portion of the plurality of material particles, wherein the adhesive is comprised of droplets, at least about 80% of the droplets having an average droplet diameter of about 50 to about 200 microns, to form a material/adhesive mixture, and forming the material/adhesive mixture into a composite object.