Abstract: A method for fabricating the three-dimensional comb-tooth-shaped groove array surface, the surface of the bearing is first etched with grooves having a certain depth by means of femtosecond lase, then a PTFE film is impressed and attached to the surface of the inner ring of the bearing, the position of a laser focus is adjusted to focus on the lower surface of the PTFE film, the same pit is scanned repeatedly, ripple characteristic stripes occur on the surface of the inner ring of the bearing while the film gasifies instantly under the action of laser ablation heating, a part of polymer material in the gasified part is adsorbed to a mechanical surface in each pit under the action of mechanical interlocking, and a super-oleophobic PTFE surface is obtained in each groove.

Abstract: The disclosure belongs to the technical field of line contact lubrication characteristic test measurement, and provides a roller lubrication performance measuring and testing device, including a frame and two arc-shaped guide rails arranged in the frame, the frame is arranged on a workbench, the arc-shaped guide rails are slidably matched with the frame, inner arc surfaces of the two arc-shaped guide rails are oppositely arranged, and the two arc-shaped guide rails are fixedly connected; a roller rotatably connected to a bottom one of the arc-shaped guide rail; a contact ring arranged between the inner arc surfaces of the two arc-shaped guide rails; a first driving mechanism used for driving the contact ring to rotate, a second driving mechanism used for driving one of the arc-shaped guide rails to slide relative to the frame, and an image acquisition device used for acquiring oil film images on the surface of the roller.

Abstract: A method for fabricating the three-dimensional comb-tooth-shaped groove array surface, the surface of the bearing is first etched with grooves having a certain depth by means of femtosecond lase, then a PTFE film is impressed and attached to the surface of the inner ring of the bearing, the position of a laser focus is adjusted to focus on the lower surface of the PTFE film, the same pit is scanned repeatedly, ripple characteristic stripes occur on the surface of the inner ring of the bearing while the film gasifies instantly under the action of laser ablation heating, a part of polymer material in the gasified part is adsorbed to a mechanical surface in each pit under the action of mechanical interlocking, and a super-oleophobic PTFE surface is obtained in each groove.

Abstract: Provided herein are modified anti-SARS-COV-2 antibodies or antigen binding fragments thereof having extended half life and optimized immune activities. Disclosed herein is also directed to pharmaceutical compositions comprising the same and a method for treating or preventing a disease in human patients that is caused by or related to the infection of SARS-COV-2.

Abstract: Provided herein are modified anti-SARS-COV-2 antibodies or antigen binding fragments thereof having extended half life and optimized immune activities. Disclosed herein is also directed to pharmaceutical compositions comprising the same and a method for treating or preventing a disease in human patients that is caused by or related to the infection of SARS-COV-2.

Abstract: Provided herein are modified anti-SARS-COV-2 antibodies or antigen binding fragments thereof having extended half life and optimized immune activities. Disclosed herein is also directed to pharmaceutical compositions comprising the same and a method for treating or preventing a disease in human patients that is caused by or related to the infection of SARS-COV-2.

Abstract: Broadly neutralizing antibodies against HIV-1 which specifically bind to gp120 of HIV-1, a method of preparing such antibodies and the use thereof are provided.

Abstract: Broadly neutralizing antibodies against HIV-1 which specifically bind to gp120 of HIV-1, a method of preparing such antibodies and the use thereof are provided.

Abstract: A device and a method of shielding a region of a display screen in the device are provided. The method includes: acquiring at least one of shield information of an application executed in the device, and a shielding operation performed by a user to shield the region of the display screen; and shielding the region of the display screen based on the acquired at least one of the shield information and the shielding operation.