Abstract: The present disclosure provides a device and method for measuring a correlation between fatigue performance and a microstructure of a one-dimensional (1D) nanomaterial in situ in a transmission electron microscope (TEM), belongs to the technical field of in-situ testing and characterization of microstructures of nanomaterials. The device includes a chip part, a supporting part, and a control circuit. The supporting part is a bracket and a cable disposed on a transmission sample holder, and the circuit part consists of cables connected to the chip and a power supply capable of applying different waveforms, variable voltages, and variable frequencies. This design breaks through a traditional mechanical stress-driven fatigue performance test method, and achieves controllable adjustment of different amplitudes and cycles by using an electric field formed by a voltage and adjusting a voltage size and frequency, such that the 1D nanomaterial vibrates in the electric field to achieve fatigue performance testing.

Abstract: Disclosed are a feed line filtering antenna and a communication device. The antenna comprises a feed line structure and radiator structures, the feed line structure serves as a first-order resonator, the radiator structures are loaded on the feed line structure, and form a two-order filter together with the feed line structure as a last-order resonator, a band-pass filtering effect of the radiator structures is achieved by controlling the coupling between the first-order resonator and the last-order resonator; when a feed line filtering antenna having three or more orders is achieved, an additional resonator is coupled on a feed line filtering antenna having two orders. According to the present invention, in-band and out-of-band interference can be effectively filtered, the return loss and efficiency of the antenna are not greatly changed compared with those of a single antenna, and the horizontal radiation and gain requirement of the vehicle-mounted antenna can be ensured.

Abstract: The present disclosure relates to the technical field of iron and steel, in particular to an electrical steel with low iron loss and method for controlling tension thereof during decarburization annealing. A tension of each procedure of decarburization annealing of the electrical steel is controlled and adjusted respectively, and further combined with temperature of the decarburization annealing furnace, treatment time of the electrical steel in decarburization annealing furnace, and width and thickness of the electrical steel to prevent deflecting, cracking and narrowing of the electrical steel in the furnace and nodules on the bottom of roller. Compared with products of same brand, surface roughness and magnetic hysteresis loss of product are decreased by 10-20% and 10-15%.

Abstract: The present invention provides novel mito-pyridinium compounds, prodrugs and the uses thereof for the treatment of cancer, particularly drug resistant cancer.

Abstract: The present invention discloses an intelligent industrial design measurement and control device and method of application. The key points of the technical solution include the construction and application of an AIGC agile industrial design model, a human-machine collaborative design process, the construction of an application paradigm for industrial product generation scenarios, model optimization decisions based on cognitive analysis, and application case studies and verification. The AIGC model significantly improves design efficiency and innovation by rapidly generating and optimizing design solutions. Through precise demand analysis and optimization decisions, it ensures that the design solution is highly consistent with user expectations, thereby improving user satisfaction. Agile design methods and multiple iterative optimizations ensure that the design process is efficient and accurate, and improve design quality and reliability.

Abstract: The present disclosure provides a quantitative accuracy evaluation method and system for a result of remote sensing inversion. The method includes the following steps: acquiring measured data of a target element content in a preset zone; acquiring, based on acquired remote sensing image reflectivity of the preset zone, predicted data of the target element content in the preset zone by a remote sensing inversion model; and conducting comprehensive index evaluation of abnormal feature similarity between the measured data and the predicted data. The technical solution adopted in the present disclosure can solve the problem with quantitative accuracy evaluation of remote sensing inversion that inverted object content and measured object content are distributed inconsistently in space.

Abstract: A process method for preparing magnesium oxide from dolomite includes the following steps: S1, pretreating dolomite to obtain the calcined dolomite; S2, hydrating the calcined dolomite according to the solid-liquid ratio, controlling the hydration temperature and the hydration time, filtering, washing and drying after hydration to obtain the hydration product; S3, configuring a complex solution, using the sodium hydroxide solution to adjust the pH value to 8-10; S4, performing the complexation reaction by mixing the hydration product in S2 with the complex solution in S3, and controlling the complexation temperature and the complexation time, obtaining the magnesium oxide by filtration, washing and drying after the reaction is completed. The invention uses dolomite as raw material, and the amount of magnesium hydroxide produced by magnesium oxide at a specific hydration temperature and hydration time can be ignored.

Abstract: An attitude adjustment apparatus for a self-propelled bio-inspired robotic fish includes a fish body, where the fish body includes: a housing; a center-of-gravity adjustment assembly, located in the housing to adjust a center of gravity of the fish body, and including at least one counterweight and a screw-slider mechanism that drives the counterweight to move in a head-to-tail direction; and a suction and drainage system, located in the housing to adjust a weight of the fish body, and including a ballast tank and a water control assembly for controlling a water level in the ballast tank. The center-of-gravity adjustment assembly is combined with the suction and drainage system to rapidly change the weight and center of gravity of the fish body, so as to quickly adjust the pitching attitude and heaving state of the robotic fish.

Abstract: Disclosed are a crack self-healing agent for cement-based materials capable of binding corrosive ions in seawater, and a preparation method thereof. A core material of the agent is an active inorganic composite component capable of chemically binding Cl, Mg, and S, a wall layer is polymethyl methacrylate, and an interface improvement layer is a cement layer. A preparation method includes: (1) thoroughly mixing active components capable of binding corrosive ions, and filling a resulting mixture into a direct compression mold; (2) applying a pressure to the direct compression mold and holding the pressure on using a pressing machine, and demolding to obtain a core material body; (3) placing the core material body obtained in a solution of PMMA in acetone for coating, and taking out the core material body and drying; (4) coating a layer of cement before the acetone is completely volatilized to obtain the crack self-healing agent.

Abstract: A cleaning system and a method suitable for an ultra-large-scale photovoltaic power station are provided; including a control terminal, an intelligent control center, and a large-load unmanned helicopter, the control terminal is provided with an operation interface to receive an instruction from an operator and transmit the instruction to the intelligent control center through a wireless communication, the intelligent control center is provided with a processor, a wireless communication module, a flight monitoring and control module, and a data feedback and optimization module; the present invention adopts the above system and method, the use of large-load unmanned helicopters is wide, which is more suitable for ultra-large-scale photovoltaic power stations, the high-pressure gas-liquid two-phase flow cleaning device is mounted on the large-load unmanned helicopter, which can carry out precise cleaning operations along the arrangement of photovoltaic panels, and spray high-pressure water and gas to remove dus

Abstract: The invention discloses a method, a device and a medium for predicting a flue dust concentration, which calculate a flue dust emission amount of each batch of coal fed into a furnace based on hourly coal consumption of a unit as a label value of a prediction model, generate a general rule between data of the coal fed into the furnace and a corresponding flue dust emission amount through training the prediction model, accurately identify a relationship between material and the flue dust emission amount, reduce workloads of manual accounting and verification, and provide a reference for CEMS flue dust monitoring data. At the same time, using an Adam algorithm to optimize a BPNN allows for automatic adjustment of a learning rate for each parameter, enabling fast and efficient training of the prediction model.

Abstract: A head-up display (HUD) system wherein an individually optimized polarization state is provided for each incident beam from an image display device.

Abstract: The present invention relates to a haptic actuator using a magnetorheological elastomer and a magnetorheological fluid, which has a shape in which a magnetorheological elastomer surrounds a ferrous elastomer and a magnetorheological fluid, the haptic actuator being capable of providing kinesthetic feedback related to an external force by increasing rigidity of the magnetorheological elastomer and increasing viscosity of the magnetorheological fluid, and capable of providing vibration feedback by generating vibration by being repeatedly compressed and restored in shape when an alternating current magnetic field is applied.

Abstract: Disclosed is a high-precision BeiDou satellite positioning method and system for a complex urban environment. The method includes the following steps: acquiring measurement data; solving the measurement data based on Kalman filtering before predicting to obtain an initial positioning result; performing graph-based data modeling based on the measurement data to obtain a sky satellite graph; and performing feature extraction on the sky satellite graph based on a Transformer model with a graph-structure perception module, and outputting a position correction value. By using the present disclosure, the positioning accuracy and generalization performance of a positioning model in complex scenarios can be improved. The present disclosure is widely applicable in the field of satellite positioning.

Abstract: According to various embodiments, there may be provided a monocopter. The monocopter may include a body chassis. The monocopter may further include a wing structure extending from the body chassis, the body chassis being at a root of the wing structure. The wing structure may include a plurality of rigid wing segments distributed along a spanwise direction extending between the root and a tip of the wing structure. The wing structure may further include a plurality of flexible wing segments, each flexible wing segment adjoining a pair of adjacent rigid wing segments of the plurality of rigid wing segments. The monocopter may further include a propulsion unit coupled to a rigid wing segment of the plurality of rigid wing segments between a midspan of the wing structure and the tip of the wing structure.

Abstract: A method for improving deformability of a cementitious composite by using PET powder is provided. The aggregate in the cementitious composite is replaced with PET powder at a volume replacement ratio of 0-25%, and the value of the volume replacement ratio is not 0%. The method including following steps: mixing components of the raw materials to obtain the cementitious composite.

Abstract: A crude oil transportation drag-reducing agent testing loop test bench and its use method is provided. The test bench includes a gas supply and pressurization system, a pressurized storage tank system, a pipeline testing system, a reflux and circulation system, a valve switching system, a heating and insulation testing system, and a sensor testing system. The test bench can evaluate the performance of drag-reducing agents in transportation pipeline devices within a laboratory setting, and further inspect, evaluate, and test the effective performance of different proportions and types of drag-reducing agents. The test bench also ensures the safety of experimental test, reduces testing costs, avoids the production of large amounts of waste liquid, and minimizes test space.

Abstract: Detonation nanodiamond nanocarrier platforms to transport quaternary oxime antidotes into the central nervous system have been developed. The nanodiamond-based AChE reactivators contain an organophosphorus poisoning antidote (e.g., a 4-hydroximinopyridinium moiety) bound to a biocompatible linker covalently attached to the nanodiamonds. These functionalized nanodiamonds successfully cross the layer of Madin-Darby Canine Kidney (MDCK) cells, the epithelial cell surrogate BBB model, and demonstrate a measurable dose-independent in vitro reactivation capacity towards human AChE inhibited by toxic organophosphorus compounds.

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: A high-power large-aperture fundamental mode vortex optical waveguide coherent VCSEL array is provided, and the coherent VCSEL array is a large-aperture array light-emitting structure, including an N electrode layer, an N-type DBR, an active region, an P-type DBR and a P electrode layer; micro/nanostructures pores with hexagonal lattice arrangement are etched on the surface of light output aperture on the each light-emitting unit mesa of the coherent VCSEL array, the micro/nanostructures pores are filled with highly doped semiconductor transparent materials to form a vortex optical waveguide structure.