Abstract: Provided are a separator thickness adjustment device and method, and a winding electrode assembly production system. The separator thickness adjustment device includes: a mounting base; an active roller and a passive roller disposed at the mounting base in parallel to each other, in which each of the active roller and the passive roller is rotatable about its own axis, a gap is formed between the active roller and the passive roller, a separator passes through the gap, and a position of the passive roller relative to the active roller is adjustable to change a size of the gap; a first drive component configured to drive the active roller to rotate about its own axis to move the separator; and a second drive component configured to drive the passive roller to move towards or away from the active roller.

Abstract: Disclosed are a display apparatus and a method for displaying a user interface. In response to a preset instruction, the display apparatus acquires local images to generate a local video stream, plays a local video picture, and displays a graphic element for identifying a preset expected position in a floating layer above the local video picture. When the moving target exists in the local video picture and an offset of a target position of the moving target in the local video picture relative to the expected position is greater than a preset threshold value, a prompt control for guiding the moving target to move to the expected position is presented in the floating layer above the local video picture according to the offset of the target position relative to the expected position.

Abstract: A method and a kit for the detection of Trichomonas infection by detecting N-acetyl-?-D-hexosaminidase activity in a sample, and a method and a kit for the detection of Trichomonas or Candida infection by detecting N-acetyl-?-D-hexosaminidase activity in a sample. The presence of a Trichomonas or a Candida infection can be distinguished by a pH of the sample.

Abstract: The invention relates to a method and a kit for the detection of Trichomonas infection by detecting N-acetyl-?-D-hexosaminidase activity. The invention also relates to a method and a kit for selective detection of presence of Trichomonas or Candida infection.