Abstract: A high-efficiency permeability enhancement device for coal-seam gas drainage, wherein, including: a high-pressure gas cylinder, an air compressor being connected to a gas outlet of the high-pressure gas cylinder, a drill pipe, a plurality of jet nozzles being evenly disposed in a circumferential direction of the drill pipe, located below a drill bit, arranged outwards along a radial direction of the drill pipe, and in communication with the gas outlet of the high-pressure gas cylinder; and a plurality of self-driving drill bits being evenly disposed in the circumferential direction of the drill pipe, and located below the jet nozzles, wherein an end of the drill pipe is provided with the drill bit, a front end of the self-driving drill bits is radially defined with a plurality of front spray holes, and the self-driving drill bits are in communication with the gas outlet of the high-pressure gas cylinder.

Abstract: The disclosure provides an air supply unit, the air supply unit provided in the disclosure includes a bearing seat, a drying mechanism, an air storage mechanism, an air supply mechanism and a control valve assembly; the air supply mechanism is connected with one end of the bearing seat, an air channel is formed in the other end of the bearing seat, and the control valve assembly is provided on one end of the bearing seat where the air channel is formed, and communicates with the air channel; and the drying mechanism is provided in the bearing seat, the air storage mechanism is sleeved on one end of the bearing seat that is provided with the air supply mechanism, and the air supply mechanism is located in the air storage mechanism.

Abstract: The present application provides a thunderstorm activity observation and management system and method applicable to a power transmission channel. The method comprises: acquiring the number of thunderstorm days in each analysis period; respectively adjusting combined with a preset discrepancy threshold so as to obtain a thunderstorm intensity value of each analysis period; determining a voltage intensity coefficient for each analysis period according to line feature data of a power transmission channel acquired in each thunderstorm activity; and determining a thunderstorm activity assessment value according to the above two result values, wherein the thunderstorm activity assessment value is used for determining a defense level, thereby, defense resources can be scientifically allocated according to the defense level.

Abstract: The disclosure provides an electric power transmission safety monitoring system for a thunderstorm area. The system includes a transmission platform, an area characteristic analysis unit and a transmission influence analysis unit, where the transmission platform may receive an electric power transmission request sent by a current power supply end, determine a power demand end and a transmission area where the power demand end is located. After receiving the area characteristic analysis signal sent by the transmission platform, the area characteristic analysis unit carries out thunderstorm characteristic analysis, and sends the analysis result to the transmission influence analysis unit and the transmission platform. The transmission platform further formulates an electric power transmission strategy.

Abstract: The present invention discloses a method and system for participating in grid frequency regulation within full range of charging and discharging of energy storage, comprising: collecting grid operation power and frequency data, and constructing a full-range droop coefficient; setting constraints of upper and lower limits of a frequency deadband, obtaining an actual output power command value based on the constraint function constructed from a theoretical power command value and a rated charging and generating power value, and controlling operation of the grid; and setting a hysteresis interval on the power command of an energy storage system, wherein when the demand of the grid exceeds the upper threshold, the energy storage system switches from the charging mode to the discharging mode; and when the demand of the grid falls below the lower threshold, the energy storage system switches from the discharging mode to the charging mode.

Abstract: A new method for extracting lithium from salt lake brine, comprising the following steps: a salt lake old brine raw material, desorption liquid, low-magnesium water, and adsorption tail liquid pass through an old brine feeding pipe (2), a desorption liquid feeding pipe (4), a low-magnesium water top desorption liquid feeding pipe (3), and an adsorption tail liquid top desorption liquid feeding pipe (11), respectively, which are located above and below a rotary disc of a multi-way valve system (1); and after respectively entering corresponding adsorption columns (6) by means of a duct and channel within the multi-way valve system (1), the entire process procedure is completed from an adsorption tail liquid discharge pipe (7), a qualified desorption liquid discharge pipe (10), a lithium-containing old brine discharge pipe (8), and an adsorption tail liquid top desorption liquid discharge pipe (5); and the adsorption columns (6) are connected in series or in parallel by means of channels located in the multi-way

Abstract: A high-efficiency permeability enhancement device for coal-seam gas drainage, wherein, including: a high-pressure gas cylinder, an air compressor being connected to a gas outlet of the high-pressure gas cylinder, a drill pipe, a plurality of jet nozzles being evenly disposed in a circumferential direction of the drill pipe, located below a drill bit, arranged outwards along a radial direction of the drill pipe, and in communication with the gas outlet of the high-pressure gas cylinder; and a plurality of self-driving drill bits being evenly disposed in the circumferential direction of the drill pipe, and located below the jet nozzles, wherein an end of the drill pipe is provided with the drill bit, a front end of the self-driving drill bits is radially defined with a plurality of front spray holes, and the self-driving drill bits are in communication with the gas outlet of the high-pressure gas cylinder.

Abstract: The disclosure provides an air supply unit, the air supply unit provided in the disclosure includes a bearing seat, a drying mechanism, an air storage mechanism, an air supply mechanism and a control valve assembly; the air supply mechanism is connected with one end of the bearing seat, an air channel is formed in the other end of the bearing seat, and the control valve assembly is provided on one end of the bearing seat where the air channel is formed, and communicates with the air channel; and the drying mechanism is provided in the bearing seat, the air storage mechanism is sleeved on one end of the bearing seat that is provided with the air supply mechanism, and the air supply mechanism is located in the air storage mechanism.

Abstract: Disclosed are a system and a process for preparing a refined sodium carbonate solution. The system includes a formulation tank for dissolving an industrial-grade sodium carbonate; a feeding mechanism, an outlet of which is connected to an inlet of the formulation tank; a pH regulator, the pH regulator being disposed in the formulation tank, and the feeding mechanism being connected to the pH regulator; a filtering mechanism, an inlet of which is connected to an outlet of the formulation tank; and an adsorption mechanism, an inlet of which is connected to an outlet of the filtering mechanism.

Abstract: Disclosed are peptides comprising an amphiphilic backbone and a cationic heparin-binding motif peptide. The peptides can be used in methods of antimicrobial treatment.

Abstract: The present disclosure provides a monitoring and warning device for rock burst in coal mine, which is configured for monitoring a rock mass in a drill hole, the monitoring and warning device for rock burst in coal mine includes: an integration rod, radial adjustment components, a plurality of bases, and a measuring instrument, the integration rod is extended into the drill hole; the radial adjustment components are provided on the integration rod, and have a plurality of radial adjustment ends; a plurality of bases are correspondingly provided in the radial adjustment ends, and the bases are further connected with attachment components through elastic components, and the attachment components are embedded with first strain gauges; the measuring instrument is rotatably provided in the integration rod, and is used to measure the distance between the measuring instrument and the attachment components.

Abstract: The present disclosure provides a monitoring and warning device for rock burst in coal mine, which is configured for monitoring a rock mass in a drill hole, the monitoring and warning device for rock burst in coal mine includes: an integration rod, radial adjustment components, a plurality of bases, and a measuring instrument, the integration rod is extended into the drill hole; the radial adjustment components are provided on the integration rod, and have a plurality of radial adjustment ends; a plurality of bases are correspondingly provided in the radial adjustment ends, and the bases are further connected with attachment components through elastic components, and the attachment components are embedded with first strain gauges; the measuring instrument is rotatably provided in the integration rod, and is used to measure the distance between the measuring instrument and the attachment components.

Abstract: A charging state analysis method of an electric vehicle based on electrical characteristic sequence analysis is provided. The method includes following steps: step S1, obtaining voltage sampling data and current sampling data of the electric vehicle during charging; step S2, setting a time interval, so as to divide the voltage sample data and the current sampling data obtained in step S1 into multiple data sets; step S3, calculating an electrical characteristic vector of each time interval; step S4. adding the calculation results of Step S3 to a temperature sensing value T, and generate an electrical characteristic sequence of whole charging cycle; step S5, inputting the electrical characteristic sequence of the electric vehicle into a trained TRNN in sequence to obtain corresponding results; if the result is 1, it is normal; if the result is 0, it is abnormal.

Abstract: The invention discloses a charging state analysis method of a electric vehicle based on electrical characteristic sequence analysis. The method includes following steps: step S1, obtaining voltage sampling data and current sampling data of the electric vehicle during charging; step S2, setting a time interval, so as to divide the voltage sample data and the current sampling data obtained in step S1 into multiple data sets; step S3, calculating an electrical characteristic vector of each time interval; step S4. adding the calculation results of Step S3 to a temperature sensing value T, and generate an electrical characteristic sequence of whole charging cycle; step S5, inputting the electrical characteristic sequence of the electric vehicle into a trained Time Recurrent Neural Network (TRNN) in sequence to obtain corresponding results; if the result is 1, it means normal; if the result is 0, it means abnormal.

Abstract: A new method for extracting lithium from salt lake brine, comprising the following steps: a salt lake old brine raw material, desorption liquid, low-magnesium water, and adsorption tail liquid pass through an old brine feeding pipe (2), a desorption liquid feeding pipe (4), a low-magnesium water top desorption liquid feeding pipe (3), and an adsorption tail liquid top desorption liquid feeding pipe (11), respectively, which are located above and below a rotary disc of a multi-way valve system (1); and after respectively entering corresponding adsorption columns (6) by means of a duct and channel within the multi-way valve system (1), the entire process procedure is completed from an adsorption tail liquid discharge pipe (7), a qualified desorption liquid discharge pipe (10), a lithium-containing old brine discharge pipe (8), and an adsorption tail liquid top desorption liquid discharge pipe (5); and the adsorption columns (6) are connected in series or in parallel by means of channels located in the multi-way

Abstract: A non-intrusive load identification method based on the Power Fingerprint characteristics of the load is provided. The method includes: S1, collecting Power Fingerprint characteristic data of several loads of the same type; S2, after preprocessing Power Fingerprint characteristic data of load, establishing convolution neural network based on attention mechanism to learn load characteristics; S3, using sliding time window algorithm to realize load switching event detection, In order to extract the change of electrical data of user bus before and after the switching event, the non-intrusive load identification problem is converted into the single load identification problem; S4, the load identification is realized, and the extracted electrical information features of single load are identified using the trained model.

Abstract: Disclosed are peptides comprising an amphiphilic backbone and a cationic heparin-binding motif peptide. The peptides can be used in methods of antimicrobial treatment.

Abstract: Disclosed are peptides comprising an amphiphilic backbone and a cationic heparin-binding motif peptide. The peptides can be used in methods of antimicrobial treatment.

Abstract: A particulate profile control agent self-adaptive to a size of formation pore throat and a preparation method thereof include: raw materials and mass fraction for preparing a system including a main agent of 0.04˜0.2%, a nucleating agent of 0.005˜0.01%, a crosslinking agent of 0.002˜0.04%, an additive of 0.005˜0.01% and water. The preparation method includes: adding the main agent in proportion to the water and evenly mixing the mixture of the main agent and the water, and then adding the additive, the crosslinking agent and the nucleating agent in turn so as to form the profile control agent; pumping the profile control agent into the formation to be reacted at a reservoir temperature for a period of time to form colloidal particles on the spot for sealing off a high-permeability layer. The present disclosure is of easy operation and low cost, low initial viscosity and good injectivity.

Abstract: A particulate profile control agent self-adaptive to a size of formation pore throat and a preparation method thereof include: raw materials and mass fraction for preparing a system including a main agent of 0.04˜0.2%, a nucleating agent of 0.005˜0.01%, a crosslinking agent of 0.002˜0.04%, an additive of 0.005˜0.01% and water. The preparation method includes: adding the main agent in proportion to the water and evenly mixing the mixture of the main agent and the water, and then adding the additive, the crosslinking agent and the nucleating agent in turn so as to form the profile control agent; pumping the profile control agent into the formation to be reacted at a reservoir temperature for a period of time to form colloidal particles on the spot for sealing off a high-permeability layer. The present disclosure is of easy operation and low cost, low initial viscosity and good injectivity.