Abstract: Provided a catalyst for OER/ORR, including: an alloy oxide core having a particle size of 30 to 40 nm; and a carbon layer having a thickness of 1 to 7 nm, which is coated on a surface of the alloy oxide core, wherein the alloy oxide is a ternary to quinary alloy oxide, and the metal element contained in the alloy oxide is a transition metal element. Also provided is a method for preparing catalysts for OER/ORR by an electrospinning process. Accordingly, the prepared catalyst has excellent OER and ORR characteristics.

Abstract: Provided is a bioreactor apparatus including: a liquid storage chamber for storing a culture medium; a pump for providing pressure to drive the flow of the culture medium; a plurality of culture chambers providing an accommodating space to accommodate the culture medium and a cell to be cultured; and a pipeline connecting the liquid storage chamber, the pump, and the culture chamber to form a closed loop. Also provided is a bioreactor system including the bioreactor apparatus of the present disclosure, the culture medium, and a cell. Further provided is a method for culturing a cell or an organoid by the bioreactor apparatus of the present disclosure. The bioreactor apparatus, bioreactor system, and method of the present disclosure can form a biomimetic circulatory system, which is beneficial for simulating and evaluating the complex microenvironment and physiological mechanism in the living body.

Abstract: The present patent discloses a backboard fastener, comprising a male buckle and a female buckle; the male buckle and the female buckle are fitted to each other; a plurality of barbs are provided at one end of the male buckle, while a pressing face is provided at the other end thereof; and, a plurality of externally circular barbs are provided on the female buckle, an enlarged opening is provided at one end of the female buckle, and bumps corresponding to the barbs are provided inside the female buckle. The present patent has a simple structure, solves the problem of nail or screw rusting, does not need any mounting tool, and has a plurality of barbs so that falling-off is prevented. The present patent is suitable for components of various thicknesses and various occasions.

Abstract: The present patent discloses an expansive fastener, comprising a male buckle and a female buckle, wherein the male buckle comprises a main body, round-head bumps and a front opening, the front opening being located at a front end of the body and being conical, the circular head bumps being located in front of the main body and behind the front opening, a rear end of the main body being connected to a pressing face; and, the female buckle comprises a main body, grooves, an enlarged opening, externally circular barbs and a cone, the enlarged opening being located at the rearmost end of the main body, both the grooves and the cone being located inside the main body, the externally circular barbs being sheathed outside the main body. With the round-head bumps, the detachability is excellent and it is convenient for mounting and replacement.

Abstract: The present patent discloses a device for preventing components from loosening caused by reverse travel, comprising a shell and a cylindrical pin, wherein the cylindrical pin is clamped inside the shell, is in sliding connection with the shell and is capable of retracting into or extending out of the shell. Because of the presence of track positioning, the device disclosed by the present patent can ensure the positioning of the installed components just by performing positioning while fasteners are installed, can avoid the situation of reverse rotation or slip of the components and can be assembled without using any tool or spare parts kit. The device disclosed by the present patent is a hidden device which is automatically telescopic following actions, thereby being convenient to operate and not affecting the appearance.

Abstract: A printer having a body and a fixing mechanism is provided. The body has a first transporting track. The fixing mechanism has a heating mechanism and a pressurized mechanism, and the first transporting track is disposed between the heating mechanism and the pressurized mechanism. During a printing procedure, the heating mechanism provides a toner fixed temperature, and the pressurized mechanism provides a toner fixed pressure. During laminating procedure, the heating mechanism provides a laminating temperature, and the pressurized mechanism provides a laminating pressure. There is no additional laminating mechanism disposed inside the printer. The printer can execute a toner fixed function or a laminating function by adjusting the temperature and the pressure of the fixing mechanism originally disposed in the printer.

Abstract: The present invention is correlated with a derivative of 18?-glycyrrhetinic acid apt to suppressing cancer cells, which is selected from a group comprising of structure I and structure II: wherein residue R1 is selected from one of CH3 and CH2C6H5, residue R2 is selected from one of COOCH3, COOCH2CH3, COOCH(CH3)2, CONHCH2CH3, CONHCH2CH2CH3, and CONHCH2(CH3)2, and residue R3 is selected from one of COOCH2CH3, COOCH(CH3)2, CONHCH2CH3, CONHCH2CH2CH3, and CONHCH2(CH3)2.

Abstract: The present invention is correlated with a derivative of 18?-glycyrrhetinic acid apt to suppressing cancer cells, which is selected from a group comprising of structure I and structure II: wherein residue R1 is selected from one of CH3 and CH2C6H5, residue R2 is selected from one of COOCH3, COOCH2CH3, COOCH(CH3)2, CONHCH2CH3, CONHCH2CH2CH3, and CONHCH2(CH3)2, and residue R3 is selected from one of COOCH2CH3, COOCH(CH3)2, CONHCH2CH3, CONHCH2CH2CH3, and CONHCH2(CH3)2.

Abstract: A printer having a body and a fixing mechanism is provided. The body has a first transporting track. The fixing mechanism has a heating mechanism and a pressurized mechanism, and the first transporting track is disposed between the heating mechanism and the pressurized mechanism. During a printing procedure, the heating mechanism provides a toner fixed temperature, and the pressurized mechanism provides a toner fixed pressure. During laminating procedure, the heating mechanism provides a laminating temperature, and the pressurized mechanism provides a laminating pressure. There is no additional laminating mechanism disposed inside the printer. The printer can execute a toner fixed function or a laminating function by adjusting the temperature and the pressure of the fixing mechanism originally disposed in the printer.

Abstract: A lubricant backflow structure of a compressor includes a casing, a scrolling set, and a transmission mechanism. An oil tank is arranged under the casing, an internally longitudinal wall of which is formed as an oil backflow passage, an inlet of which is corresponded to one side of the scrolling set for receiving a lubricant, and an outlet of which is formed above the oil tank. Thereby, when a working fluid (e.g. refrigerant) enters into the casing, it won't mix with the lubricant therein, capable of reducing oil consumption and enhancing thermally exchanging efficiency of the system.