Abstract: A power supply system and a control method therefor, and an electronic device are provided. The power supply system includes: a plurality of battery cells, connected in series with each other; a first power supply circuit, configured to generate a first power supply voltage of the power supply system based on a series voltage of the plurality of battery cells; a second power supply circuit, configured to generate a second power supply voltage of the power supply system based on a voltage of a subset of the plurality of battery cells; and a switch circuit, configured to control at least one of the first power supply circuit or the second power supply circuit to be turned on or turned off based on the first power supply voltage and the second power supply voltage.

Abstract: The present application relates to a charging and discharging balance control method, a system and an electronic device. The method includes: obtaining status information of a plurality of batteries connected in series during the charging or discharging process; and, according to the capacities and the state information of the plurality of batteries, adjusting the charging current and/or discharging current of the battery connected to at least one balancing branch, such that the voltage difference of the plurality of batteries is within a preset range. Therefore, the charging or discharging rates of batteries having different capacities may be balanced under the condition of current balancing adjustment, so as to ensure that the batteries may be simultaneously fully charged or completely discharged. Thus, the structural space of devices having foldable screen forms or irregularly-shaped battery compartments may be utilized to the maximum extent.

Abstract: The disclosure belongs to the technical field of well completion engineering in oil and gas engineering, and particularly relates to a high-flow-conductivity proppant and its preparation method. The high-flow-conductivity proppant includes dumbbell-shaped framework granules and an oil-soluble film coating layer coated on the surfaces of the framework granules; the oil-soluble film coating layer melts when meeting oil at the temperature of 30-120° C. The high-flow-conductivity proppant prepared by the method has low bulk density, and the problems that the traditional proppant cannot be transported to the far end of a crack, has poor flow conductivity and the like can be effectively solved.

Abstract: The disclosure belongs to the technical field of well completion engineering in oil and gas engineering, and particularly relates to a high-flow-conductivity proppant and its preparation method. The high-flow-conductivity proppant includes dumbbell-shaped framework granules and an oil-soluble film coating layer coated on the surfaces of the framework granules; the oil-soluble film coating layer melts when meeting oil at the temperature of 30-120° C. The high-flow-conductivity proppant prepared by the method has low bulk density, and the problems that the traditional proppant cannot be transported to the far end of a crack, has poor flow conductivity and the like can be effectively solved.

Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.

Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.

Abstract: A test device and method for top-of-the-line corrosion (TLC) of a high-temperature high-pressure wet gas pipeline. The device mainly includes: a metal top cap, a metal reaction cylinder, a first thermometer, a second thermometer, a plastic transparent measuring cylinder, a condensed water collection tube, an atomic spectrometer, a third thermometer, a rubber seal cover, a condensate droplet, a threaded hole, a condensation chamber, a pipeline sample, a temperature measuring hole, and a 30-degree tilt angle. The device and method can effectively simulate TLC of a wet gas pipeline under a high-temperature high-pressure environment. The device and method can test the high-temperature high-pressure TLC of the wet gas pipeline under different temperature differences (between a surface temperature of the pipeline and a gas temperature) and various corrosion media.

Abstract: A test device and method for top-of-the-line corrosion (TLC) of a high-temperature high-pressure wet gas pipeline. The device mainly includes: a metal top cap, a metal reaction cylinder, a first thermometer, a second thermometer, a plastic transparent measuring cylinder, a condensed water collection tube, an atomic spectrometer, a third thermometer, a rubber seal cover, a condensate droplet, a threaded hole, a condensation chamber, a pipeline sample, a temperature measuring hole, and a 30-degree tilt angle. The device and method can effectively simulate TLC of a wet gas pipeline under a high-temperature high-pressure environment. The device and method can test the high-temperature high-pressure TLC of the wet gas pipeline under different temperature differences (between a surface temperature of the pipeline and a gas temperature) and various corrosion media.

Abstract: The present invention relates to the field of medicinal synthesis, and discloses a method for synthesizing degarelix. The method of the present invention as a whole divides the synthesis of degarelix into two parts from amino acids at positions 5 and 6, employs proper protective groups in part of the protected amino acids therein, and finally uses in association with a specific acidolysis agent to complete the whole synthesis process. In the present invention, a proper synthesizing scheme is selected, and adaptive protective group and acidolysis agent are selected, so that the overall synthesis process is optimized, the purity of degarelix is significantly improved with a higer total yield, and the production of the toxic hydantoin degradation product is avoided.

Abstract: A method for preparing bivalirudin. The method includes preparing a bivalirudin resin by a solid phase synthesis, performing acidolysis of the bivalirudin resin to obtain crude bivalirudin, and purifying the crude bivalirudin to obtain purified bivalirudin. The solid phase synthesis method includes successively coupling Fmoc-protected amino acids corresponding to a sequence represented by SEQ. ID NO. 2 on an Fmoc-Leu-carrier resin through solid phase coupling synthesis to obtain the bivalirudin resin represented by SEQ. ID NO. 2.

Abstract: The present invention disclosed a tri-layer structured metal composite oxides material which used in a catalyst coat for purifying vehicle exhaust gas, and the method for manufacturing the same.