Abstract: A freezing support device and method for a large thin-walled part, which belongs to the technical field of machining support. The present invention realizes freezing support for a large thin-walled part by a freezing system and an auxiliary system, wherein the freezing system comprises a heating source, a freezing source, flexible films, support plates, etc., and the auxiliary system comprises a rotating device, a moving plate and guide rails. The present invention utilizes ice with a certain thickness formed on a support side of a machining area and supports a workpiece through the ice, and the ice is always used as a support along with the progress of machining to have an effect of follow-up support. The present invention simplifies a support structure, and has the advantages of low cost, no contamination to a machine tool, and convenient use; plays a function of clamping the workpiece.

Abstract: An electric controlled bi-directional bending actuator with deformability and stiffness tunable capacity is disclosed. The electric controlled bi-directional bending actuator with deformability and stiffness tunable capacity comprises three kinds of functional layers that are electro-deformable layers, electro-variable stiffness layers and flexible electrodes. From up to bottom, they are the first flexible electrodes layer, the first electro-deformable layer, the second flexible electrodes layer, the electro-variable stiffness layer, the third flexible electrode layer, the second electro-deformable layer and the fourth flexible electrode layer. The adjacent layers are glued together. The electro-deformable layer is made from dielectric elastomers. The electro-variable stiffness layer is made from electro-rheological materials, including electro-rheological fluids, electro-rheological gels or electro-rheological elastomers.

Abstract: An outer finned tube includes a tube body, an outer wall of the tube body is provided with outer fins spirally arranged in an extension direction of the tube body; grid fins are arranged between two adjacent spiral parts of the outer fins correspondingly; two ends of each grid fin are connected to the two adjacent spiral parts of the corresponding outer fin respectively; a gap is kept between each grid fin and the outer wall of the tube body; and the plurality of grid fins are spaced in the extension direction of the tube body. An enhancing cavity is formed in an area defined by the outer wall of the tube body, inner walls of the grid fins and the outer fins in an encircling way, which can form a larger degree of superheat, provides a nucleation point for a boiling/condensation process and improves a heat exchange performance.

Abstract: Disclosed herein is an axial flux motor. The axial flux motor includes a rotating shaft, a rotor assembly, and a stator assembly. The rotor assembly includes a rotor disc, a plurality of rotor disc teeth provided on a first side of the rotor disc, and a cage. The stator assembly includes a stator base, a plurality of electromagnet assemblies, a supporting plate, and a bearing housing. An electromagnet assembly from the plurality of electromagnet assemblies comprising a core, a first fixture, a second fixture, a coil winding, and a couple of connecting screws. The yoke is configured to be secured between the first fixture and the second fixture.

Abstract: The present application belongs to the technical field of bridge engineering, and particularly relates to a structure for relieving cracking of a steel bridge deck. The structure for relieving cracking of a steel bridge deck comprises a steel bridge deck and a plurality of U-ribs welded and fixed to a bottom of the steel bridge deck, and further inventions an iron-based shape memory alloy (Fe-SMA) fixing unit, a filling unit, a structural layer, and a test wire. A Fe-SMA having a restoration capability in the case of heating is used and formed into a honeycomb structure to greatly reduce an amplitude of fatigue stress and an influence of fatigue cracking of a welding part on the bridge deck.

Abstract: The present invention discloses a determination method for a preferred habitat of fish and a terminal device, wherein the method comprises: acquiring parameter information of a water environment in which target fish is located, and establishing a 3D water environment model by utilizing the parameter information of the water environment; determining an ecological function of the target fish and constructing a bio-simulation model on the 3D water environment model by combining the ecological function; acquiring a movement locus of the target fish in the bio-simulation model and determining potential habitats of the target fish according to the movement locus; and determining the preferred habitat of the target fish from the potential habitats by utilizing a preference learning model based on a density accumulation method.

Abstract: The gas measurement device includes a plurality of electrodes arranged apart from each other so as to have a gap through which gas can pass, each electrode connected to a power source for applying voltage or current, and a gas sensor configured to detect gas molecules passing between the electrodes.

Abstract: A shrimp shell separation and cleaning device for Euphausia superba comprises a hollow main body; a screening cylinder installed rotationally inside the main body and having a bottom installed with a filter screen; a stirring assembly provided rotationally inside the main body and comprising a cylindrical cam installed inside the screening cylinder, wherein a sleeve frame is sleeved over the cylindrical cam, stirring rods are provided on the sleeve frame in an array mode and rotationally installed on the sleeve frame through driving grooves, the driving grooves run through the sleeve frame and each have one end, which penetrates through the sleeve frame, rotationally installed in one driving groove of the cylindrical cam, and the sleeve frame is arranged in self-rotating manner; a feeding port installed fixedly on communicating with the main body; and a spray head arranged fixedly inside the main body for spraying water into the screening cylinder.

Abstract: Laser additive manufacturing and a method for preparing thin-walled preforms by laser metal deposition and follow-up rolling. This can solve the problems that when the existing laser metal deposition technology prepares the thin-walled preforms, the limit width size of a molten pool at high power affects the forming wall thickness of the preforms so that it is difficult to prepare preforms with wall thickness less than 2 mm, and the problems of poor surface quality and low accuracy of preforms due to convex and concave peaks caused by the interlayer overlapping, but also can solve the problems that a laser beam with a preset trajectory cannot act on the end surfaces of the preforms due to preform deformation caused by residual stress in a printing process so that the preforms cannot be continuously formed.

Abstract: A device for targeted repair of micro-nano damage of an inner ring of an aeroengine bearing by an electric-magnetic composite field includes a driving device, an ultrasonic shot peening device, a pulsed current generator and a magnet yoke-coil device. The driving device includes a motor and a rotating shaft. The motor drives the rotating shaft to drive a bearing inner ring to synchronously rotate. The ultrasonic shot peening device includes an ultrasonic shot peening cavity, an ultrasonic probe and steel balls, the ultrasonic probe extends into the cavity from an opening in a lower end of the cavity, and the steel balls are placed on the ultrasonic probe. An opening in an upper end of the cavity is placed below the bearing inner ring. The pulsed current generator generates pulsed current on the bearing inner ring. The magnet yoke-coil device can excite a magnetic field around the bearing inner ring.

Abstract: The present invention provides a polarization-independent terahertz wave control element, and provides a method for manufacturing a polarization-independent terahertz wave control element.

Abstract: The gas measurement device includes a gas sensor disposed in a gas chamber, a filter configured to control passing gas molecules to the gas chamber, and a driving unit configured to move at least a part of a member defining the gas chamber.

Abstract: A method for calculating a sensitivity of a displacement of Synthetic Aperture Radar (SAR) along line-of-sight direction to a slope gradient and a slope aspect is provided, comprising: obtaining SAR data and Digital Elevation Model (DEM) data covering slope bodies, and extracting a local incident angle of an image by utilizing a satellite side-looking imaging principle; carrying out geometric distortion on the slope bodies under ascending and descending orbits by utilizing the local incident angle, to obtain specific locations of geometric distortion areas under ascending and descending orbit; calculating sensitivities of detections to changes of the slope gradient and the slope aspect under ascending and descending orbits according to the extracted parameter information of the SAR satellite in ascending and descending orbits and satellite heights, and dividing a sensitivity distribution by combining the sensitivity and the specific locations of the geometric distortion.

Abstract: Disclosed are to a pixel circuit, a method for driving the pixel circuit and a display panel. The pixel circuit includes a data write module, a storage module, a drive module and a light emitting device. The drive module includes a first control terminal and a second control terminal. The data write module is configured to write, at a data write stage, a data signal into the first control terminal of the drive module, the storage module is configured to maintain a potential of the first control terminal, the second control terminal is electrically connected to a pulse-width modulation (PWM) signal input terminal of the pixel circuit, and is configured to control the drive module to provide discontinuous drive current according to a PWM signal from the PWM signal input terminal at a light emission stage, and the light emitting device emits light in response to the discontinuous drive current.

Abstract: A water-soluble conjugated polymer for photothermal therapy, a polymerized monomer thereof, a preparation method therefor, and application thereof. The water-soluble conjugated polymer has good solubility in an aqueous solution, has excellent biocompatibility, does not need to be subjected to coating treatment, can be directly used for photothermal therapy, is easy to use, has a nanometer size, and can enter cells easily. Polar groups are contained in side chains, and the water-soluble conjugated polymer is capable of targeting, can locate intracellular organelles, has excellent photostability and chemical properties as well as high photothermal conversion efficiency, can achieve photothermal therapy of near-infrared region I or II, with high treatment efficiency and few side effects. In the preparation method for the water-soluble conjugated polymer, raw materials can be easily obtained, synthesis conditions are mild, and the purification is convenient.

Abstract: The invention discloses a device for producing biogas with high methane content by utilizing livestock and poultry feces, wherein the interior of a tank body of a biogas fermentation tank is divided by a baffle, so as to form a main reaction chamber and an auxiliary reaction chamber which are communicated in upper portions, so that a reactant flows into the auxiliary reaction chamber only after entering the main reaction chamber via a relatively low feeding hole and then reaching a high position of a liquid level, and extension of fermentation time is realized, meanwhile, scales formed at the top of fermentation broth flow into the auxiliary reaction chamber along with liquid, so that the interior of the main reaction chamber keeps a liquid state all the time, and sealing and reduction of quantity of anaerobic bacteria are avoided.

Abstract: Disclosed are adhesives comprising a first compound comprising three or more 1,2-dihydroxybenzene groups; and a second compound that is a functionalized polymer; wherein the first compound and second compound are in the form of a mixture, and wherein the adhesive has adhesive properties when wet. Additional embodiments to methods of preparing an adhesive, adhesives prepared by the method, and articles prepared from the adhesive are disclosed.

Abstract: An driving motor with hybrid excitation of electromagnetism and invisible magnetic pole, wherein each magnetic pole comprises two first magnets, one second magnet and one third magnet; wherein the first magnet is placed along a diameter direction of a rotor core, the second magnet is located at a middle and lower portion of two first magnets of each magnetic pole corresponding to the second magnet at a diameter direction, and a magnetic isolation groove is disposed at an inner end of the first magnet and extends toward two sides of the inner end of the first magnet. The magnetic isolated air gap can adjust a spatial distribution of a magnetic field generated by permanent magnets of each pole to replace the permanent magnets, so as to save the number of the permanent magnets, reduce the weight of the motor, and reduce the cost of the motor.

Abstract: The gas measurement device includes a filter having a plurality of openings, each opening being variable in size, an adjustment mechanism configured to vary size of the plurality of openings, a first gas sensor configured to detect gas molecules passing through an opening of the filter and output a first measurement value corresponding to the detected gas molecules, and a second gas sensor configured to detect the gas molecules passing through the opening of the filter, output a second measurement value corresponding to the detected gas molecules, and detect gas molecules of a gas species different from the gas molecules detected by the second gas sensor.

Abstract: A hollow spherical cerium dioxide nanomaterial, preparation method and application thereof; wherein the preparation method uses glucose as a carbon source, urea as a precipitant, cerium trichloride as a cerium source, and water as a solvent to prepare a cerium dioxide/carbon composite material by a hydrothermal method, and then, a hollow spherical cerium dioxide nanomaterial with a multi-shell layer structure is obtained by calcination in a muffle furnace. By adjusting the amount of urea and the calcination temperature, a number of shell layers of the material can be adjusted. Moreover, in the nanomaterial, the number of shell layers can be adjusted, large spacing exists between shell layers, specific surface area can be increased, wherein contact area of the material with an electrolyte increases, but also structural collapse caused by a volume expansion of an electrode material during charging and discharging can be alleviated, and the electrochemical performance is effectively improved.