Abstract: A metal oxide semiconductor material includes a semiconductor base material and at least one kind of rare earth compound doped in the semiconductor base material, Each kind of rare earth compound has a general formula represented as (MFD)aAb, where in s the general formula (MFD)aAb, MFD is an element selected from rare earth elements capable of undergoing f-d transition and/or charge transfer transition, A is selected from elements capable of stretching a wavelength range of an absorption spectrum of MFD capable of undergoing the f-d transition and/or the charge transfer transition towards red light into a visible light range, a is a number of the element MFD in the general formula (MFD)aAb, and b is a number of the element A in the general formula (MFD)aAb.

Abstract: Disclosed is a flow control system for digital and mechanical redundant pressure compensation. On the basis of an original pressure compensation valve, two-position three-way electromagnetic valves are added to control the opening and closing of pressure compensation valves. Furthermore, pressure sensors and a controller are added, so that the system has a digital pressure compensation function. When the pressure sensor breaks down, the flow control system is switched to a mechanical compensation mode to achieve mechanical pressure compensation, the problem that system flow cannot be controlled when the sensor breaks down is solved, and the purpose of redundancy control is achieved. Moreover, the pressure compensation valve in the loop where the highest load is located can be controlled to be completely opened through the two-position three-way electromagnetic valve to reduce pressure loss of the valve port, and the pressure is not affected by load fluctuation.

Abstract: A method for detecting a particular syndrome based on hemodynamic analysis that includes steps of: obtaining a piece of hemodynamic data representing a hemodynamic waveform; performing moving average (MA) filtering on the hemodynamic waveform to obtain a filtered waveform; determining troughs in order to determine waveform segments of the filtered waveform; determining smoothness of the waveform segments; and determining a relation between the hemodynamic waveform and a particular syndrome based on the smoothness of the waveform segments, and generating a detection result.

Abstract: A method for detecting a particular syndrome based on hemodynamic analysis that includes steps of: obtaining a piece of hemodynamic data representing a hemodynamic waveform; performing moving average (MA) filtering on the hemodynamic waveform to obtain a filtered waveform; determining troughs in order to determine waveform segments of the filtered waveform; determining systolic peaks for determining first and second portions of the waveform segments; determining smoothness of the second portions; and determining a relation between the hemodynamic waveform and a particular syndrome based on the smoothness of the second portions, and generating a detection result.

Abstract: A dedicated device for shattering phenolics with mechanochemical synthesis and a shattering method thereof. The dedicated device includes a supporting frame, a primary shattering device, a secondary shattering device, a three-stage shattering device and an automatic regulating device. The primary shattering device includes a shattering box, a first motor, a first transmission rod, a plurality of tool frames, a plurality of blades, at least one screen mesh, a plurality of fixed cutters and a guide hopper. The secondary shattering device includes a first roller, a second roller, a second transmission rod and a set of helical gears. The three-stage shattering device includes a second motor, a set of tapered blade sets and a plurality of strain sensors. This realizes the regeneration of new mixed materials and the chemical properties of materials control of some micro changes such as material morphology.

Abstract: A fiber pre-dispersing device for fiber reinforced concrete, comprising: a dispersing chamber, a feed inlet is installed on the upper side of a dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged at both sides of dispersing chamber, supporting legs are installed in the grooves.

Abstract: A fertilizer grinding mechanism, a water and fertilizer mixing device, and an aqueous fertilizer solution preparation production line. A fertilizer receiving body, where an edge is provided with a arranged first channel; a connecting body, fixed to a bottom of the fertilizer receiving body and provided with a second channel with the first channel, a bottom of the second channel is communicated with a buffer bin, a pushing block is arranged in the buffer bin, and the pushing block is connected with a drive mechanism for driving the block to move in direction of the body; and an inner grinding block, where the block is fixed to a bottom of the connecting body, an outer side of the inner grinding block is with a vertically movable grinding roller, the pushing block can push fertilizer under vertical movement of the roller. The grinding mechanism has a heat dissipation effect.

Abstract: The present invention discloses a dual-microphone adaptive filtering algorithm for collecting body sound signals, characterized in that, using at least two microphones, a primary microphone and a secondary microphone, to collect signals; the primary microphone is used to collect noisy body sound signals, and the secondary microphone is used to collect environmental noise; applying a same high-pass filtering to signals collected by the primary microphone and signals collected by the secondary microphone; using a normalized least mean square algorithm on the primary microphone signals and the secondary microphone signals after the high-pass filtering to calculate a weight of the adaptive filter and to calculate an error signal to filter out environmental noise in the primary microphone signals; processing the error signal for a first time by a low-pass filtering to restore the body sound signals, to obtain the body sound signals output by the adaptive filtering algorithm.

Abstract: A non-blind area real-time monitoring and alarming system for an accident on a freeway is provided, which belongs to the field of photoelectric technology and can solve the existing problems in whole journey information monitoring for freeways, such as failure to cover all freeway sections and lack of all-weather and prompt monitoring, and being subject to severe environments such as rain, fog and snow, or conditions such as poor visibility at night. The system includes a distributed sound wave detection fiber-optic cable, a sound wave signal demodulator, a network switch, a workstation, and a monitoring terminal. A fiber-optic sensing network composed of a series of reflection nodes distributed at equal distances is utilized to monitor sound wave signals from traffic accidents efficiently in real time without blind areas, accurately locate a traffic incident by analyzing frequency components, and transmit alarming information in time.

Abstract: The present disclosure provides a method for preparing a self-floating transparent nano ultrathin film. According to the present disclosure, the MXene film layer and the nano ultrathin film layer are sequentially subjected to suction filtration on the substrate material by utilizing a vacuum suction filtration technology, and thus a double-film structure is loaded on the substrate material; then an oxidant is subjected to oxidizing and bubbling on the MXene film layer in a permeation way, and thus the substrate material and the nano ultrathin film layer can be separated in a physical isolating manner. Finally, the nano ultrathin film is completely separated in a liquid phase floating separation manner. The nano ultrathin film prepared by the method provided by the present disclosure has a specific thickness and light transmittance through different loading capacities, and the substrate material can be repeatedly utilized.

Abstract: In the field of image encryption and decryption, in order to solve the problem of small key space in the encryption process caused by low dimension of one-dimensional chaotic map and few initial values and control parameters, the present disclosure provides an image encryption and decryption communication algorithm based on two-dimensional lag complex Logistic map, which expands the variables of one-dimensional Logistic map from the real number domain to the complex number domain, improves the dimension of the mapping system, increases the number of keys, and expands the mapping range, wherein the new mapping system is more sensitive to small disturbances of initial values and parameters, which can break the strong correlation between pixels in the original image, so that the pixels of the encrypted image are uniformly distributed in the whole plane, and the features of the original image are hidden.

Abstract: A glass ceramic manufactured by sequentially performing the processes of melting and thermal decomposition, water quenching and sintering of a glass composite. The glass ceramic includes 38 wt % to 49 wt % CaO, 41 wt % to 52 wt % SiO2 and 0.1 wt % to 20 wt % P2O5. The glass composite includes a glass component and P2O5, and the glass component includes CaCO3 and SiO2 and does not include an alkali metal oxide. The melting and thermal composition temperature is from 1350° C. to 1650° C. The sintering temperature is from 750° C. to 1050° C. By the combination of CaO, SiO2 and P2O5 and the control of the contents of CaO, SiO2 and P2O5 within the aforementioned ranges, and the glass ceramic contains no alkali metal oxide, the glass ceramic has good mechanical strength and low cytotoxicity.

Abstract: The present disclosure discloses a laser radar for meteorological observation, and specifically relates to the field of meteorology. The laser radar comprises a base. According to the present disclosure, air pressure at the bottom of 301 is increased by injecting gas into the interior of 202, so that the 301 falls off from 201, and the disassembly between the stable seat and the connecting sleeve plates is realized; with regard to the disassembly process of the connecting sleeve plates and the base, the magnetic pole of a positioning electromagnet is changed mainly by switching the current direction of an external coil of the positioning electromagnet, so that the positioning electromagnet is separated from the locking magnet, thereby facilitating the detachment of the base and the connecting sleeve plates in combination with the linkage component, and the disassembly process of the whole device.

Abstract: A method for generating millimeter wave noise with a flat RF (radio frequency) spectrum includes the following steps. A noise optical signal with an optical spectrum in Gaussian shape is output by a first optical emission module. The noise optical signal is transmitted to an optical coupler. n beams of noise optical signals with optical spectra in Gaussian shape is output by a second optical emission module. The noise optical signals is transmitted to the optical coupler. The noise light generated by the first optical emission module and the second optical emission module is coupled to the optical coupler. The coupled optical signals is transmitted to a photodetector. The beat frequency is performed by the photodetector to realize mapping transformation from the optical spectra to the RF spectra. The flat millimeter wave noise is output.

Abstract: A forming method of a nickel aluminum (NiAl) alloy tubular part with micro flow channels including preparing a laminated tube blank. A step of fixing aluminum wires to an outer surface of the laminated tube blank to prepare a middle tube blank. A step of winding a nickel (Ni) flexible substrate and an Al flexible substrate on an outer surface of the middle tube blank to prepare a composite tube blank. A step of carrying out hot gas forming on the composite tube blank to prepare a composite tubular part. A step of carrying out in-mold first-stage reaction synthesis to make the Ni flexible substrate chemically react with the aluminum (Al) flexible substrate. A step of carrying out in-mold second-stage reaction synthesis to melt all the aluminum wires. A step of carrying out hot isostatic pressing treatment to prepare the NiAl alloy tubular part with the micro flow channels.

Abstract: Disclosed is a system and a method to analyze spectrophotometry and ultrasound images and data in a complex way to diagnose malignant skin tumors in early stages. The system consists of a high-frequency portable ultrasonic imaging device for in vivo skin examinations, an optical spectrophotometer with light sources of different wavelengths for skin chromophore registration, and a complex data processing algorithm providing an advisory diagnostic evaluation. This enables automatically aggregating data and quantitative estimates obtained by different imaging techniques for melanocyte-derived skin tumors, facilitating the decision support for acceptance of the final clinical diagnosis and treatment planning.

Abstract: The present application provides a full hydraulic synchronous steering system for a low-speed heavy-load vehicle, where the system includes: a steering control mechanism and a steering actuator; by determining a desired steering curve between a steering wheel angle and a rear wheel angle, when a steering error exceeds an allowable error, a controller controls the opening and closing of an oil replenishment solenoid valve (5) and an oil discharge solenoid valve (4) to adjust a flow rate of the oil flowing into a steering cylinder (7), so as to ensure that the steering error is within an allowable error range, thereby implementing synchronous steering. A method for manipulating the full hydraulic synchronous steering system is further provided. The full hydraulic synchronous steering system and the method can improve synchronous steering capability of the low-speed heavy-load vehicle and change a steering ratio, thereby improving safety and direction feeling of a driver.

Abstract: The present invention provides a long-term mooring device. A support frame is provided on a dock. The dock is provided with a free guide roller. The free guide roller is wound with a cable. An upper end of the cable is horizontally connected to a spring fixed on a lower side of a cross arm of the support frame, through a free guide roller provided on the lower side of the cross arm of the support frame (corresponding to the free guide roller on the dock). The middle of the cable penetrates through an inertial induction self-locking connection joint fixed on an end of a platform arm. The platform arm is fixed on a platform. The present invention provides an omnidirectional restoring force for the moored platform through the elastic deformation of the springs to control the movement response of the platform within a certain range.

Abstract: The present invention belongs to the technical fields of civil engineering, smart material and health monitoring, and provides a viscous damper fluid viscosity monitoring device and method based on piezoceramic transducers, comprising piezoceramic transducers, wires, corks, a baffle and a viscous damper. When the fluid viscosity of the viscous damper changes, the energy dissipation of pressure waves during propagation in a fluid will change, and signals received by the piezoceramic transducers will change, so that the viscosity of the fluid in the viscous damper can be calculated by the amplitude change of the signals received. The device of the present invention has a simple structure and accurate monitoring results, and provides a simple and feasible method for real-time monitoring of fluid viscosity of viscous dampers in engineering.

Abstract: Disclosed is a continuous feeding mechanism including a transfer mechanism, wherein the transfer mechanism includes a rotatable indent roller circumferentially provided with a plurality of blanking grooves; a post pin is arranged in each blanking groove; the post pin is connected with a spring; the spring is arranged towards the interior of the indent roller; and the post pin can move along the blanking grooves; a feeding box, wherein the bottom of the feeding box is hollow, and the bottom is arranged above the indent roller or the bottom is fixedly connected with the indent roller; the continuous feeding mechanism is arranged above one side of the transfer mechanism; and an electromagnetic heating mechanism which includes a supporting frame, wherein the transfer mechanism is arranged in the supporting frame, and an electromagnetic coil is circumferentially arranged outside the supporting frame.