Abstract: A coenzyme Q10 slow-release drug includes an isolation layer and a drug layer, where the drug layer is composed of coenzyme Q10 and a pharmaceutically acceptable carrier; the isolation layer is composed of a degradable gel; a diameter of the drug layer is not larger than that of the isolation layer. The coenzyme Q10 slow-release drug is prepared as follows. (S1) The degradable gel is laid on a mold for casting into a film to form the isolation layer. (S2) Coenzyme Q10 and the pharmaceutically acceptable carrier are mixed and laid on the mold in step (S1) for casting to form the drug layer on the isolation layer. (S3) Steps (S1) and (S2) are repeated, and then edges of adjacent controlled-release layers are bonded to obtain the coenzyme Q10 slow-release drug.

Abstract: A coenzyme Q10 slow-release drug includes an isolation layer and a drug layer, where the drug layer is composed of coenzyme Q10 and a pharmaceutically acceptable carrier; the isolation layer is composed of a degradable gel; a diameter of the drug layer is not larger than that of the isolation layer. The coenzyme Q10 slow-release drug is prepared as follows. (S1) The degradable gel is laid on a mold for casting into a film to form the isolation layer. (S2) Coenzyme Q10 and the pharmaceutically acceptable carrier are mixed and laid on the mold in step (S1) for casting to form the drug layer on the isolation layer. (S3) Steps (S1) and (S2) are repeated, and then edges of adjacent controlled-release layers are bonded to obtain the coenzyme Q10 slow-release drug.

Abstract: Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.

Abstract: Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.