Abstract: An integrated plugging and perforating operation system is provided, including an operation truck, a wellhead equipment pry, and a centralized control room. A mechanical mechanism and a power mechanism are arranged on a chassis of the operation truck. The mechanical mechanism includes a turntable assembly, where a telescopic arm assembly is installed on the turntable assembly, a mechanical arm assembly for logging operation is installed at an operating end of the telescopic arm assembly, and a logging winch assembly and a follow-up winch assembly are arranged at a counterweight end of the telescopic arm assembly to form a counter weight of the telescopic arm assembly. The power mechanism is configured for providing power output to the mechanical mechanism.

Abstract: A wellhead automatic positioning method and a system of a plugging and perforating operation machine are provided. The method includes: determining a wellhead position, and acquiring standard positioning parameters of a boom according to the wellhead position and a tool string length, where the positioning parameters include a standard extension length L of the boom, a standard lifting length J, and an included angle ? between a projection of the boom and a wellhead; acquiring actual positioning parameters of the boom, where the actual positioning parameters include an actual length L? of the boom, an actual lifting length J?, and an initial angle ?? between the projection of the boom and the wellhead; and according to the standard positioning parameters and the actual positioning parameters of the boom, making the boom to extend and retract, lift and lower, and rotate to complete automatic positioning of the wellhead.

Abstract: The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution.

Abstract: The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution.

Abstract: A composite fertilizer containing magnesium ammonium phosphate and polyglutamic acid. A weight ratio of the polyglutamic acid to the magnesium ammonium phosphate is 1:100 to 10000, preferably 1:200 to 8000. An experimental result indicates that the composite fertilizer can well regulate the growth of crops, improve the disease resistance and stress tolerance, promote the healthy effect of the crops, and increase the yield of the crops.

Abstract: The present invention discloses a plant growth regulator. The effective ingredients of the plant growth regulator comprise active components A and B, wherein the active component A is thidiazuron, and the active component B is amino-oligosaccharin. Also provided are a preparation method and use of the composition. Experimental results indicate that the composition of the present invention is effective in regulating the growth, increasing the disease and stress resistance, promoting the health and increasing the yield and quality of crops.

Abstract: Provided is a keyword verification method including: acquiring keywords corresponding to the content of a verification object, such as a video, an audio and a picture, displayed and broadcast by a client; and using an identifier to mark the content, generating a verification prompt according to the keyword or the identifier, and further determining a verification result according to a feedback of a user of a corresponding client. Further disclosed is a generation device for implementing the verification method.

Abstract: The present invention discloses a plant growth regulator. The effective ingredients of the plant growth regulator comprise active components A and B, wherein the active component A is thidiazuron, and the active component B is amino-oligosaccharin. Also provided are a preparation method and use of the composition. Experimental results indicate that the composition of the present invention is effective in regulating the growth, increasing the disease and stress resistance, promoting the health and increasing the yield and quality of crops.

Abstract: Provided is a keyword verification method including: acquiring keywords corresponding to the content of a verification object, such as a video, an audio and a picture, displayed and broadcast by a client; and using an identifier to mark the content, generating a verification prompt according to the keyword or the identifier, and further determining a verification result according to a feedback of a user of a corresponding client. Further disclosed is a generation device for implementing the verification method.