Abstract: This application describes a crystal of a benzofuran derivative free base and a preparation method. Specifically, this application describes crystal A, crystal B, crystal C, and crystal D of N-((4,6-dimethyl-2-carbonyl-1,2-dihydropyridin-3-yl)methyl)-5-ethyl-6-(ethyl(tetrahydro-2H-pyran)4-yl)amino)-2-(piperidin-1-ylmethyl)benzofuran-4-carboxamide and a preparation method for the crystals. The crystals of the compound of formula (I) have great crystal stability and provides improved uses in clinical treatment.

Abstract: A tool includes a housing, a drive assembly including an output shaft extending from the housing such that a tool element for performing work on a workpiece is attachable to the output shaft, and a bushing disposed within the housing. The bushing rotatably supports the output shaft. The bushing is impregnated with lubricant such that the bushing is self-lubricating, and the bushing has an impregnation ratio between about 5% and about 25%.

Abstract: An evaporation deposition device and a method of controlling same are provided. The evaporation deposition device includes a stage configured to carry a target substrate and an evaporation deposition component disposed opposite to the stage. The evaporation deposition component includes a first housing, a first switch configured to control opening or closing of the evaporation deposition component, an evaporation deposition source positioned in the first housing, and at least one recovery tank connected to the evaporation deposition source.

Abstract: A wooden house includes a roof, a wooden frame mechanism, a base, and a fixed wall panel, wherein the wooden frame mechanism with the roof mounted on the top is inserted on the base; the present invention realizes the quick mounting and dismounting of the first main cross beam and the upright post through the matching of the vertically movable wedge block and the first wedge that fixes the wedge tenon to the wedge mortise. At the same time, because the wedge mortise is connected to the common mortise, after dismounting the first main cross beam, the second wedge and third wedge are pushed into the wedge mortise through tools, to achieve the removal of the sub-cross beam from the upright post, thereby improving the efficiency of mounting and dismounting of the entire house.

Abstract: A shift register unit, a method of driving a shift register unit, a gate driving circuit, and a display device are disclosed. The shift register unit includes an input circuit and an output circuit. The input circuit is configured to write an input signal of the input terminal to the first node in response to an input control signal, so as to control a level of the first node. The output circuit is configured to receive a clock signal of the clock signal terminal and output a scanning signal through the pixel signal output terminal under control of the level of the first node. The output circuit includes a variable resistor, and the variable resistor is configured to adjust a level of the scanning signal according to a resistance value of the variable resistor.

Abstract: Provided are a preparation method of pyrrolo-amino-pyridazinone compound and an intermediate thereof. The reaction conditions are easy to control, the processing following the reaction is simple, the production rate is high, and the method is advantageous for industrial production.

Abstract: A Fusarium solani strain and a use thereof in the control of southern blight disease of Dendrobium officinale Kimura et Migo, and the strain JSNL007-2 has been identified as Fusarium solani and has been deposited in China Center for Type Culture Collection on Mar. 10, 2017 with a deposit number of CGMCC NO. 13687. The Fusarium solani JSNL007-2 of the present invention has a significant effect on the disease resistance of Dendrobium officinale Kimura et Migo, especially for improving the ability of Dendrobium officinale Kimura et Migo to resist southern blight disease, and has a certain effect on reducing the use of chemical pesticides, which is an important means to ensure food safety.

Abstract: An electrical connector includes an insulative housing and two rows of contacts retained in the housing, and a metallic shielding plate assembled in the housing and located between the two rows of contacts wherein the shielding plate includes a pair of spring fingers extending from the front edge into the mating cavity in front of the shielding plate, and a plurality of notches located around the pair of spring fingers and equipped with barbed structures extending into the notches so as to grasp the corresponding ribs of the housing so as to stabilize the whole shielding plate in the housing.

Abstract: An electrical connector includes an insulative housing having a first insulator integrally formed with the contacts via an insert-molding process, and a second insulator, i.e., the cover, overmolded upon the first insulator wherein an internal cavity is formed within the housing and between the first insulator and the second insulator in the transverse direction, through which a sliding block presses the first insulator in position in the transverse direction during overmolding the second insulator.

Abstract: The present disclosure provides a loudspeaker assembly and an electronic device, relating to the technical field of electronic devices, so as to solve the problems of single sound effect and lack of good sound effect. The loudspeaker assembly includes a first housing, a second housing, a loudspeaker vibrator and an adjusting mechanism. The first housing and the loudspeaker vibrator form a first cavity, and the second housing and the loudspeaker vibrator form a second cavity. The adjusting mechanism includes a driving mechanism and a filling part. The driving mechanism drives the filling part to move, so as to change the volume of the filling part extending into the second cavity.

Abstract: An electrical connector includes an insulative housing, a plurality of contacts assembled in the housing, opposite metal top and bottom shells attached upon opposite top face and bottom face of the housing, and a metallic shielding plate inserted into the housing and between two rows of contacts. The top shell, the bottom shell and the shielding plate have corresponding ears secured together in an intimately sandwiched manner.

Abstract: A vapor chamber having sealing structure, comprising a body and a capillary wick. The body has a first plate and a second plate. The first and second plates are attached to each other, which collectively define a sealed chamber therein and form a lip side. The lip side has an inlet channel and a stamping seal. The inlet channel is connected to the sealed chamber at one end and is connected to the stamping seal at the other end. The stamping seal is formed in a non-I shape. The capillary wick is selectively disposed within the sealed chamber of the body. Therefore, the air-tightness of the vapor chamber is increased by the stamping seal.

Abstract: A shift register unit, a method of driving a shift register unit, a gate driving circuit, and a display device are disclosed. The shift register unit includes an input circuit and an output circuit. The input circuit is configured to write an input signal of the input terminal to the first node in response to an input control signal, so as to control a level of the first node. The output circuit is configured to receive a clock signal of the clock signal terminal and output a scanning signal through the pixel signal output terminal under control of the level of the first node. The output circuit includes a variable resistor, and the variable resistor is configured to adjust a level of the scanning signal according to a resistance value of the variable resistor.

Abstract: Disclosed is a method for preparing a benzofuran derivative. In particular, provided is a method for preparing a benzofuran derivative, wherein according to the method provided, reaction steps required to synthesize the benzofuran substance in the prior art can be effectively shortened.

Abstract: An object of the present disclosure is to provide a gas-electric parallel-serial hybrid marine power train system with LNG cooling, including a gas engine, an electric generator, a motor, a natural gas storage supplier. The gas engine is connected to the shaft belt motor through a gearbox, the motor is connected to the gearbox through a clutch, propellers are connected to the motor, and an engine cooling system and a fuel cell cooling system are connected to an LNG vaporization heat exchange apparatus; the electrical energy sources are the fuel cell, the electric generator and a storage battery. The arrangement of multiple power sources according to the present disclosure can meet ship requirements under various environments and circumstances, improve operating efficiencies of the gas engine, the shaft belt motor and the electric motor.

Abstract: A power tool includes a housing having a motor housing portion and a front casing coupled to the motor housing portion. The power tool also includes an electric motor positioned within the motor housing portion, a drive assembly having an output shaft to which a tool element for performing work on a workpiece is attachable, and a powdered metal bushing disposed within the front casing that rotatably supports the output shaft.

Abstract: A three-dimensional memory device includes an alternating stack of insulating layers and electrically conductive layers, rows of memory openings vertically extending through the alternating stack, memory opening fill structures located within a first subset of the rows of memory openings, where each of the memory opening fill structures includes a respective memory film and a respective vertical semiconductor channel extending through an opening at a bottom portion of the respective memory film and contacting a respective underlying semiconductor material portion, and dummy memory opening fill structures located within a second subset of the rows of memory openings that do not belong the first subset, where each of the dummy memory opening fill structures includes a respective dummy memory film and a respective dummy vertical semiconductor channel that is electrically isolated from a respective underlying semiconductor material portion by a bottom portion of the respective dummy memory film.

Abstract: A charging method includes: charging a battery according to a second current value after charging the battery according to a first current value in each of N charging cycles, the second current value being less than the first current value, and N being a positive integer; and charging the battery according to a target cutoff voltage value in the case where a target voltage value is greater than or equal to the target cutoff voltage value at the end of the N charging cycle. The target voltage value is a charging voltage value corresponding to the first current value, and the target cutoff voltage value is a first cutoff voltage value, or the target voltage value is a charging voltage value corresponding to the second current value, the target cutoff voltage value is a second cutoff voltage value.

Abstract: This application describes a crystal of a benzofuran derivative free base and a preparation method. Specifically, this application describes crystal A, crystal B, crystal C, and crystal D of N-((4,6-dimethyl-2-carbonyl-1,2-dihydropyridin-3-yl)methyl)-5-ethyl-6-(ethyl(tetrahydro-2H-pyran)4-yl)amino)-2-(piperidin-1-ylmethyl)benzofuran-4-carboxamide and a preparation method for the crystals. The crystals of the compound of formula (I) have great crystal stability and provides improved uses in clinical treatment.

Abstract: An experimental device for studying the propagation characteristics of stress wave in jointed rock mass at high temperatures. The device includes a launch system, a loading system, a measuring system and a heating device. The heating device can be heated in sections to meet complicated test requirements. The measuring system includes two sets of measuring devices to ensure test accuracy. One measuring device uses a strain gauge to measure the local displacement of rock, thus obtaining the change of wave velocity; this method can be used when sample temperature is low. The other device adopts digital image processing technology. The experimental device can control the initial wave form and initial wave velocity, which can better meet the test requirements. The position of the sample can be fine-tuned to avoid the impact of errors left by rock processing on the test results.