Abstract: The present invention relates to a method for removing protein corona on the surface of nanometer particle. Specifically, the invention provides a method for removing protein corona of protein corona modified nanometer particle, the method comprises the following steps: subjecting the protein corona modified nanometer particle to ultrasound stimulation to remove the protein corona of the protein corona modified nanometer particle; the nanometer particle comprises perfluoropentane. Ultrasound stimulation can remove protein corona on the surface of nanometer particle, overcome the masking effect of the protein corona on the ligand modified on the surface of nanometer particle, and prevent the protein corona from blocking the binding of the ligand modified on the surface of nanometer particle to cell receptor.

Abstract: Disclosed is a high-temperature virus-killing mask, including a sunhat, a heating component and a mask body. The heating component comprises a high-temperature microtube and a base, both arranged in the sunhat. The high-temperature microtube is provide with a resistance wire which may be energized to generate heat to enable the temperature in the high-temperature microtube to rise up to about 200° C.

Abstract: Disclosed is a waterseal virus-killing mask, including a mask body, a liquid virus-killing assembly, and two elastic ear loops. A breather valve is disposed on an outer surface of the mask body. The two elastic ear loops are disposed on two sides of the mask body, respectively. The liquid virus-killing assembly includes a U-shaped tube within which disinfectant is provided. A disinfectant replenishing tube is vertically disposed at an upper end in the middle of the U-shaped tube. A first horizontal straight tube and a second horizontal straight tube are separately disposed at two ends of the U-shaped tube. A left end of the first horizontal straight tube is in communication with an opening of the breather valve. A first filter mesh used to separate water and air is disposed at a right end of the first horizontal straight tube.

Abstract: Disclosed is a high-temperature virus-killing mask, including a sunhat, a heating component and a mask body. A high-temperature microtube with a resistance wire is arranged in the sunhat. The resistance wire may be energized to generate heat to enable the temperature in the high-temperature microtube to rise up to about 200° C., so that, when a user inhales air, the NCP in air flowing through the high-temperature microtube will be killed by the high temperature.

Abstract: Disclosed is a waterseal virus-killing mask, including a mask body, a liquid virus-killing assembly, and two elastic ear loops. A breather valve is disposed on an outer surface of the mask body. The two elastic ear loops are disposed on two sides of the mask body, respectively. The liquid virus-killing assembly includes a U-shaped tube within which disinfectant is provided. A disinfectant replenishing tube is vertically disposed at an upper end in the middle of the U-shaped tube. A first horizontal straight tube and a second horizontal straight tube are separately disposed at two ends of the U-shaped tube. A left end of the first horizontal straight tube is in communication with an opening of the breather valve. A first filter mesh used to separate water and air is disposed at a right end of the first horizontal straight tube.

Abstract: The present invention relates to the technical field of door closers, and particularly discloses an electromagnetic release door closer. The electromagnetic release door closer comprises a door closer body, a slide rail, and a rocker arm, one end of the rocker arm is articulated with the door closer body, wherein the slide rail is provided with a slide groove and a slide cavity which are parallel to each other, a through slot which is parallel to the slide groove is arranged between the slide groove and the slide cavity, wherein an electromagnetic limiting mechanism can be fixed at any position in the slide cavity.

Abstract: The present invention relates to the technical field of door closers, and particularly discloses an electromagnetic release door closer. The electromagnetic release door closer comprises a door closer body, a slide rail, and a rocker arm, one end of the rocker arm is articulated with the door closer body, wherein the slide rail is provided with a slide groove and a slide cavity which are parallel to each other, a through slot which is parallel to the slide groove is arranged between the slide groove and the slide cavity, wherein an electromagnetic limiting mechanism can be fixed at any position in the slide cavity.

Abstract: A concealed door closer includes a housing, an input shaft and an output shaft, the input shaft being connected to a motor, wherein a joining member is arranged between the input shaft and the output shaft, and two ends of the joining member are respectively provided with an upper connection piece and a lower connection piece, which are connected to a roller via vertical rotation shaft, and wherein both the input shaft and the output shaft are provided with a left connection piece and a right connection piece, which are horizontally connected to the roller via a horizontal rotation shaft. The components in the door closer have a simple structure and may be easily processed and assembled. The size of the joint after assembly is equivalent to that of the joining member, so the overall size is small.

Abstract: A concealed door closer includes a housing, an input shaft and an output shaft, the input shaft being connected to a motor, wherein a joining member is arranged between the input shaft and the output shaft, and two ends of the joining member are respectively provided with an upper connection piece and a lower connection piece, which are connected to a roller via vertical rotation shaft, and wherein both the input shaft and the output shaft are provided with a left connection piece and a right connection piece, which are horizontally connected to the roller via a horizontal rotation shaft. The components in the door closer have a simple structure and may be easily processed and assembled. The size of the joint after assembly is equivalent to that of the joining member, so the overall size is small.

Abstract: Described herein is the synthesis and pharmacology of a series of ?-substituted methylene phosphonate analogs, in which the ?-CH2 moiety is replaced with CHCl or CHBr.

Abstract: Described herein is the synthesis and pharmacology of a series of ?-substituted methylene phosphonate analogs, in which the ?-CH2 moiety is replaced with CHCl or CHBr.