Abstract: A visual navigation inspection and obstacle avoidance method for a line inspection robot is provided. The line inspection robot is provided with a motion control system, a visual navigation system and an inspection visual system; and the method comprises the following steps: (1) according to an inspection image, the inspection visual system determining and identifying the type of a tower for inspection; (2) the visual navigation system shooting a visual navigation image in real time to obtain the type of a target object; (3) coarse positioning; (4) accurate positioning; and (5) according to the type of the tower and the type of the target object, the visual navigation system sending a corresponding obstacle crossing strategy to the motion control system, such that the inspection robot completes obstacle crossing. The inspection and obstacle avoidance method is real-time and efficient.

Abstract: Provided is a method for synthesizing a chiral amine compound. A transaminase is used to transaminate a ketone substrate under the action of an amino donor, to obtain the chiral amine compound; and the conserved amino acid sequence region of the transaminase at least includes a region 1 (MAGLWCVN) and a region 2 (YNTFFKT). With the transaminase with the specific conserved amino acid sequence region to synthesize a large sterically hindered chiral amine, the enzyme catalytic reaction volume is small, the synthesizing route is short, the product yield is high, a high-cost noble metal is not required for catalysis under the synthesizing conditions, three wastes are reduced, and the production cost is saved.

Abstract: A method for preparing a tungsten sulfide thin film is provided. The method includes the steps of: applying a one-atom-thick W layer on a silicon substrate; applying a one-atom-thick S layer on the W layer; and applying another one-atom-thick W layer on the S layer, to obtain a thin film that is a single-layer thin film having a W—S—W layered structure.

Abstract: The present invention relates to the technical field of inorganic nanofilm materials, and provides a method for preparing a tungsten sulfide thin film. The method comprises the steps of: applying a one-atom-thick W layer on a silicon substrate; applying a one-atom-thick S layer on the W layer; and applying another one-atom-thick W layer on the S layer, to obtain a thin film that is a single-layer thin film having a W—S—W layered structure. The present invention further provides a tungsten sulfide thin film prepared through the method. By means of the method according to the present invention, large-area preparation of the W—S—W thin film is realized, and the quality of the prepared W—S—W thin film is considerably improved, which greatly improves the electrical performance of the W—S—W thin film.

Abstract: A programmable logic block for an asynchronous circuit design is disclosed. After a programmable setup, the logic block not only has the processing function of common devices, but also communicates using the asynchronous protocol so as to design an asynchronous device.

Abstract: A programmable logic block for an asynchronous circuit design is disclosed. After a programmable setup, the logic block not only has the processing function of the common devices but also communicates using the asynchronous protocol so as to design an asynchronous device.