Abstract: Disclosed are a display panel and a driving method therefor, and a display device. Two adjacent rows of sub-pixels are taken as a row group, and the row group is provided with a first sub row group and a second sub row group that are arranged in a column direction; a gate electrode of a first transistor in the first sub row group is electrically connected to a first gate line; a gate electrode of a second transistor in the second sub row group is electrically connected to a second gate line; two adjacent sub-pixels in the column direction share one third transistor, and a gate electrode of the third transistor in the row group is electrically connected to a third gate line; and the first transistor and the second transistor in one column of sub-pixels are electrically connected to a data line by means of the shared third transistor.

Abstract: Provided is a display substrate. The display substrate includes: a base substrate including a display region and a non-display region surrounding the display region; a gate drive circuit disposed in the non-display region; a plurality of first signal lines disposed in the peripheral region and connected to the gate drive circuit; and a plurality of second signal lines disposed in the non-display region and connected to the gate drive circuit; wherein each of the first signal line and the second signal line is configured to supply a signal to the gate drive circuit, and a frequency of the signal supplied by the first signal line is lower than a frequency of the signal supplied by the second signal line.

Abstract: Disclosed is a C-shaped arm X-ray apparatus, comprising a C-shaped arm translation assembly (1), a support column (2), a base (3), a balancing weight (4) and an adjusting apparatus. One end of the support column (2) is connected to the base (3), and the other end of the support column is slidably connected to the C-shaped arm translation assembly (1). The balancing weight (4) is in sliding connection with the base (3). The adjusting apparatus is connected to the balancing weight (4), and when the C-shaped arm translation assembly (1) moves in a first direction, the adjusting apparatus enables the balancing weight (4) to move by a preset distance in the direction opposite to the first direction such that the gravity center of the C-shaped arm X-ray apparatus can be maintained at a preset position. The stability of the C-shaped arm X-ray apparatus can be guaranteed by adjusting the position of the balancing weight (4) by means of the adjusting apparatus.

Abstract: Disclosed are a novel tetrahydroisoquinoline compound, a method for preparing intermediates thereof, a pharmaceutical composition thereof and the use thereof. The tetrahydroisoquinoline compound of the present invention has a good inhibitory effect on phosphodiesterase (PDE4), and can be used in the prevention, treatment or auxiliary treatment of multiple diseases associated with the activity or expression of phosphodiesterase, especially PDE4-associated immune and inflammatory diseases, such as psoriasis and arthritis.