Abstract: A switching power supply structure includes a housing, a base and circuit boards, where the housing and the base enclose a cavity for accommodating the circuit boards, and a first heat dissipation channel is formed at an opening of the cavity; the housing consists of a top plate and two side plates, and a plurality of heat dissipation holes, including polygonal holes, are reserved in the housing in an array form, which forms a second heat dissipation channel. The first and second heat dissipation channels are provided, with the heat dissipation holes of the second heat dissipation channel having polygonal structures, which enlarges the heat dissipation area, achieving simple structure and good heat dissipation effect. Furthermore, due to the structural optimization of the housing and the base, the automation degree of product assembly is improved, thus lowering the cost of materials for the entire power supply housing structure.

Abstract: The present invention relates to ?-carboline, dihydro-?-carboline and tetrahydro-?-carboline alkaloid derivatives (I) and a method for preparing same and the use in the aspects of preventing and treating plant viruses, fungicides and insecticides. For the meaning of each group in formula (I) see the description. The ?-carboline, dihydro-?-carboline and tetrahydro-?-carboline alkaloid derivatives of the present invention show a particularly ourstanding anti-plant virus activity, and also have fungicidal and insecticidal activities.

Abstract: According to an example, a client device determines at least one virus sample according to at least one anti-virus engine, transmits sample information of the at least one virus sample to a server, such that the server determines a first virus sample set needs to be reported according to the sample information of the at least one virus sample and a predefined sample information list in the server, and returns to the first virus sample set to the client device. The client device receives the first virus sample set needs to be reported and performs a virus reporting operation according to the virus sample set.

Abstract: The present invention relates to ?-carboline, dihydro-?-carboline and tetrahydro-?-carboline alkaloid derivatives (I) and a method for preparing same and the use in the aspects of preventing and treating plant viruses, fungicides and insecticides. For the meaning of each group in formula (I) see the description. The ?-carboline, dihydro-?-carboline and tetrahydro-?-carboline alkaloid derivatives of the present invention show a particularly ourstanding anti-plant virus activity, and also have fungicidal and insecticidal activities.

Abstract: According to an example, a client device determines at least one virus sample according to at least one anti-virus engine, transmits sample information of the at least one virus sample to a server, such that the server determines a first virus sample set needs to be reported according to the sample information of the at least one virus sample and a predefined sample information list in the server, and returns to the first virus sample set to the client device. The client device receives the first virus sample set needs to be reported and performs a virus reporting operation according to the virus sample set.