Abstract: The present disclosure provides the use of ?-1,3-glucan synthase like 5 (GSL5) for the improvement of the clubroot resistance in cruciferous crops as well as related products development, belonging to the area of molecular engineering for plant breeding. GSL5 gene is highly conserved in cruciferous plants and mutation of GSL5 can confer a broad-spectrum and high clubroot resistance to the cruciferous crops, demonstrating that molecular engineering of GSL5 can achieve the improvement of the clubroot resistance in cruciferous crops. The present disclosure provides a key gene and techniques for the improvement of the clubroot disease resistance and durable prevention and control of the clubroot disease in cruciferous crops.

Abstract: A reaming device connects to downhole motor with paralleled driving structure. The downhole motor contains power section assembly, sleeve and connection pad. The power section assembly has a rotor and a stator in which the stator covers the rotor. The sleeve is located inside the rotor that drives the sleeve to make rotation. The connection pad is affixed to and rotates with the sleeve is disposed on the one end of the extended part of rotor from the bottom of sleeve. The reamer is set on the stator of power section assembly or on the cover connecting to the stator from power section assembly. The rotor drives the reamer to rotate with the stator or on the cover connecting to the stator through the sleeve and the connection pad.

Abstract: A reaming device connects to downhole motor with paralleled driving structure. The downhole motor contains power section assembly, sleeve and connection pad. The power section assembly has a rotor and a stator in which the stator covers the rotor. The sleeve is located inside the rotor that drives the sleeve to make rotation. The connection pad which is fixed and rotates with the sleeve is on the one end of the extended part of rotor from the bottom of sleeve. The reamer is set on the stator of power section assembly or on the cover connecting to the stator from power section assembly. The rotor drives the reamer to rotate on the stator or on the cover connecting to the stator through the sleeve and the connection pad.

Abstract: A heat exchanger includes a shell; multiple exchange tubes disposed in multiple layers from the center to the wall of the shell inside the shell; a first board and a second board arranged in parallel inside the shell; and a first spiral gas tube winding in a same direction, the first spiral gas tube having a first wall provided with a plurality of first gas pores, and the first spiral gas tube has a first inlet and a first outlet that respectively communicates with out-source gas. The heat exchanger can carry out online disturbance to the fluid in the shell internally, even in the case that the fluid media are dirty and viscous, the mixing of the fluid media tends to be uniform continuously, thus effectively improving the heat exchange effect, and convenient for cleaning, purging and maintaining the interior of the device.

Abstract: A heat exchange, which includes a casing having a cylinder; two connectors respectively attached to one end of the cylinder through the small opening; two convex heads respectively connected through the opening end to the large opening of a connector; a core disposed inside the casing; and two heat transfer medium passages. In this way, the space at the ends of the casing of the heat exchanger may be enlarged, thereby providing a space large enough to accommodate the construction personal and better working environment for two-side welding and future maintenance and wider selection range of material of the casing of the heat exchanger; a buffer area is provided for the flow of the heat transfer medium, and the auxiliary like baffles may be mounted inside the convex heads as required to further improve the heat exchange efficiency and reduce the cost.

Abstract: A heat exchange, which includes a casing having a cylinder; two connectors respectively attached to one end of the cylinder through the small opening; two convex heads respectively connected through the opening end to the large opening of a connector; a core disposed inside the casing; and two heat transfer medium passages. In this way, the space at the ends of the casing of the heat exchanger may be enlarged, thereby providing a space large enough to accommodate the construction personal and better working environment for two-side welding and future maintenance and wider selection range of material of the casing of the heat exchanger; a buffer area is provided for the flow of the heat transfer medium, and the auxiliary like baffles may be mounted inside the convex heads as required to further improve the heat exchange efficiency and reduce the cost.