Abstract: Provided are a porous silicone resin and a light-weight flexible flame-retardant composite material, belonging to the technical field of nano-porous materials. The porous silicon resin is prepared from a porous silicon resin precursor solution by means of curing and drying processes. The porous silicone resin precursor solution includes a flame retardant, a surfactant, a siloxane monomer, a catalyst, an auxiliary agent and a solvent. The porous silicone resin precursor solution is obtained by firstly dissolving the flame retardant and the surfactant in the solvent, and then adding the siloxane monomer, the catalyst and the auxiliary agent and mixing them uniformly. The porous silicone resin and the light-weight flexible flame-retardant composite material prepared therefrom have the excellent properties of high porosity, high flame retardancy, high elasticity and high strain.

Abstract: The invention discloses a method for preparing an anticorrosive surface layer of a metal material in a marine environment by laser, which belongs to the technical field of laser processing. First, the laser cladding method is used to prepare a cladding surface layer on the surface of the metal material that is not easy to undergo chemical substitution reaction with the chlorides (NaCl, MgCl2 , CaCl2 etc.) in the seawater. Then, on the surface of the cladding surface layer, ultrafast laser processing is used to form a surface layer with a wetting angle (and water) greater than 90 degrees and with hydrophobic characteristics.

Abstract: A method of crowdsourcing annotation for medical image data based on image comparison, includes developing an annotation task; acquiring and verifying medical images according to requirements of the annotation task, and performing statistics on the medical images that meet verification standards to obtain an amount of image data acquired; archiving the medical images that meet the verification standards to form a medical image database; setting up annotation rules, and generating annotation schemes and annotation samples according to the requirements of the annotation task and annotation rules; distributing the medical images in the medical image database to multiple crowdsourcing annotation sides, so that each medical image being annotated by the multiple crowdsourcing annotation sides; annotating, by the crowdsourcing annotation sides, the distributed medical images according to the annotation schemes and the annotation examples to form the annotated images; and merging multiple annotated images correspondi

Abstract: A display panel, a method of manufacturing the display panel, and a display device are provided. According to the display panel provided by the embodiment of the present application, a bonding structure is arranged between a display substrate and a circuit board to connect the display substrate and the circuit board together, and a width of the bonding structure is set to be 50 microns (?m)-200 ?m, so that when a plurality of display panels are spliced to realize a large-screen display, a width of an interval area between the adjacent display areas of the display panels may be significantly reduced.

Abstract: The present disclosure provides an electric jack with a current limiting protector, which relates to the technical field of mechanical equipment. The electric jack with the current limiting protector includes: a current limiting protector, a four-pin double-reset switch, a control motor, and a supporting leg main body. The current limiting protector is connected in parallel to the control motor through the four-pin double-reset switch. The current limiting protector, the four-pin double-reset switch, and the control motor are detachably mounted on the supporting leg main body. A first wiring terminal, a second wiring terminal, a third wiring terminal, a fourth wiring terminal, a fifth wiring terminal, and a current limiting protection circuit are distributed on the current limiting protector.

Abstract: The present invention discloses a device and method for measuring a horizontal/vertical permeability of a hydrate reservoir. The device includes a cooling water/saturated methane water tank, a water injection pump, a methane gas tank, a booster pump, an air compressor, a high-pressure gas tank, a back pressure valve, a gas tank, a data acquisition instrument, a constant-temperature water bath and a hydrate reservoir horizontal/vertical permeability measuring apparatus provided in the constant-temperature water bath, where the cooling water/saturated methane water tank is provided with a water circulation inlet and an intake line at an upper part and a water circulation outlet at the bottom; the intake line is provided thereon with an intake control gate valve; the bottom of the cooling water/saturated methane water tank is in communication with the water injection pump.

Abstract: An electric lifting bed is provided, it includes a frame, a controller, a lifting transmission mechanism, an electric transmission mechanism and a manual transmission mechanism. The electric transmission mechanism includes an electric lifting switch, a motor, a brake and an encoder, the brake is connected to an output shaft of the motor, the encoder is connected to the output shaft of the motor or the transmission rod, the motor is connected with the transmission rod, the electric lifting switch, the motor, the brake and the encoder are electrically connected with the controller respectively. The manual transmission mechanism includes a transmission box, a manual transmission assembly, a manual locking assembly and a manual switching assembly, the manual transmission assembly is connected with the transmission rod, the manual locking assembly is connected with the manual transmission assembly, and the manual switching assembly is connected with the manual locking assembly.

Abstract: A double-lifting device for a towing type traveling vehicle, has an active leg, a driven leg, a transmission member, a geared motor, a gear reduction structure, a first reverse gear reduction structure, and a second reverse gear reduction structure; the geared motor, the gear reduction structure, and the first reverse gear reduction structure are sequentially and drivably connected; the output end of the gear reduction structure is also used to drive the transmission member, and the transmission member is used to drive the second reverse gear reduction structure. The double-lifting device is able to achieve synchronous lifting and lowering. With a simple structure, ifs stable, easy to operate, and provides mechanical overload protection.

Abstract: The present invention discloses a device and method for measuring a horizontal/vertical permeability of a hydrate reservoir. The device includes a cooling water/saturated methane water tank, a water injection pump, a methane gas tank, a booster pump, an air compressor, a high-pressure gas tank, a back pressure valve, a gas tank, a data acquisition instrument, a constant-temperature water bath and a hydrate reservoir horizontal/vertical permeability measuring apparatus provided in the constant-temperature water bath, where the cooling water/saturated methane water tank is provided with a water circulation inlet and an intake line at an upper part and a water circulation outlet at the bottom; the intake line is provided thereon with an intake control gate valve; the bottom of the cooling water/saturated methane water tank is in communication with the water injection pump.

Abstract: A double-lifting device for a towing type traveling vehicle, has an active leg, a driven leg, a transmission member, a geared motor, a gear reduction structure, a first reverse gear reduction structure, and a second reverse gear reduction structure; the geared motor, the gear reduction structure, and the first reverse gear reduction structure are sequentially and drivably connected; the output end of the gear reduction structure is also used to drive the transmission member, and the transmission member is used to drive the second reverse gear reduction structure. The double-lifting device is able to achieve synchronous lifting and lowering. With a simple structure, ifs stable, easy to operate, and provides mechanical overload protection.