Abstract: The present disclosure relates generally to an osteo-tissue graft capable of promoting bone tissue growth and regeneration, comprising at least one self-assemble peptide and mesenchymal stem cells (MSCs) in accordance with the present invention and a method of preparing such an osteo-tissue graft. The grafts are suitable for treatment of bone disorder or damages through tissue engineering, cellular replacement therapies as well as other applications.

Abstract: An evaluation module configured to evaluate the lifespan of a multichip module, the multichip module comprising a first substrate and multiple chips under evaluation, includes a second substrate, configured to be the same as the first substrate, and having attachment positions corresponding to the attachment positions on the first substrate, and at least one evaluation chip, configured to be the same as the multiple chips under evaluation. The number of evaluation chips is less than the number of chips under evaluation by at least one. The at least one evaluation chip is arranged at an attachment position on the second substrate, such that the at least one evaluation chip and the chip under evaluation arranged at the corresponding attachment position on the multichip module have the same cooling performance and sustain the same thermal stress. The present disclosure also discloses a method for evaluating the lifespan of a multichip module.

Abstract: The present invention relates to the field of medical health monitoring. Disclosed in the present invention is an on-skin sensing system for detecting blood flow status in a postoperative flap and reconstructed limb, the system including a front-end status detection module and a back-end signal processing and outputting module. The front-end status detection module acquires, in real time, blood oxygen saturation and temperature statuses of postoperative flaps and reconstructed limbs. The front-end status detection module uses a flexible packaging layer to package a printed circuit board, and after the surface of the flexible package layer is chemically treated, a pre-polymerized hydrogel solution is injected to carry out cross-linking to obtain a hydrogel adhesive layer, thereby ensuring long-time close attachment to the skin while avoiding bacterial infection on the surface of the skin.

Abstract: The present invention belongs to the technical field of simulation of power semiconductor modules, and discloses a multi-physics co-simulation method of a power semiconductor module. The multi-physics co-simulation method of the power semiconductor module comprises: adopting professional circuit simulation software PSpice supporting a spice model to be imported into a device, and by designing a specific collaborative analysis method and performing secondary development of a software data exchange interface, i.e. constructing a coupling interface of co-simulation, performing electricity-heat-force co-simulation of two types of software PSpice and COMSOL by adopting an indirect coupling manner. The simulation time is greatly shortened, and the simulation efficiency is improved.

Abstract: The disclosure belongs to the field of micro-nano electronic materials, and in particular to a Se-based selector material, a selector unit, and a preparation method thereof. The Se-based selector material is a compound including Ge, Se, and B elements. The chemical formula of the Se-based selector material is (GexSe1?x)1?yByMz, in which the M element is at least one of In, Ga, Al, and Zn, and 0.1?x?0.9, 0.02?y?0.15, and 0?z?0.2. The problems of safety and stability of the existing material selection for the selector are solved by the selector material, the selector unit, and the preparation method thereof provided by the disclosure. In addition, the threshold voltage of the selector device prepared based on the Se-based selector material is adjustable, and the comprehensive performance is good.

Abstract: The present disclosure provides compositions and methods for controlled release of macromolecules (such as proteins and polypeptides). The present disclosure also provides method for preparing and using the same.

Abstract: The present invention relates to a network transmission optimization device for a graph-type blockchain, at least comprising a transaction processing module, a node managing module, and a route managing module, wherein the transaction processing module performs compression on a transaction, and transaction data obtained through the compression are transmitted among different clusters through a routing node selected by the route managing module from at least one cluster, wherein the at least one cluster is obtained through dividing plural nodes by the node managing module. The network transmission optimization method provides a transaction coding scheme to the existing graph-type blockchain systems, and improve use efficiency of network bandwidth by means of parallelized broadcast. The structured network topology of the network transmission optimization method is made to address delay among nodes, and is adaptive to dynamic joining and exit of nodes, thereby improving network transmission efficiency.

Abstract: A double-sided ultrasonic rolling cooperative strengthening system and a control method thereof are provided. The system includes a first mechanical arm subsystem, a second mechanical arm subsystem, a first ultrasonic rolling strengthening subsystem, a second ultrasonic rolling strengthening subsystem and a servo turntable (13); the servo turntable (13) is configured to fix a blade to be processed; the first ultrasonic rolling strengthening subsystem is provided at an end of the first mechanical arm subsystem; and the second ultrasonic rolling strengthening subsystem is provided at an end of the second mechanical arm subsystem.

Abstract: A La-element micro-alloyed AlCrFeNiTi bulk alloy with high corrosion resistance and wear resistance and a preparation method therefor and applications thereof are provided. The alloy includes the following chemical components in corresponding percentages: 2.05 wt % to 2.15 wt % of Al, 20.50 wt % to 20.65 wt % of Cr, 34.50 wt % to 35.54 wt % of Ni, 18.80 wt % to 19.16 wt % of Ti, 1.05 wt % to 1.15 wt % of La, and the balance of Fe and inevitable impurities, wherein the chemical components need to meet the following three relations at the same time: (1) 18.57?Fe/La?22.00; (2) 6.47?Fe/(La+Al)?7.45; and (3) 1.05?Fe/(La+Ti)?1.16. Compared with AISI 310S stainless steel, the alloy is improved by 280% to 290% in hardness, reduced by 4% to 7% in friction coefficient, and reduced by 17% to 34% in wear amount, increased by 73% to 77% in self-corrosion potential, and decreased by 96% in corrosion current density on average.

Abstract: A receptor material, a synthesis method and use thereof is disclosed. The synthesis method of the receptor material includes: S1, reacting the compound shown in a formula I with LiAlH4 to obtain a compound shown in a formula II; S2, reacting the compound shown in the formula II with 1,10-phenanthroline-5,6-dione to obtain a compound shown in a formula III; S3, reacting the compound shown in the formula III with phosphorus oxychloride and N,N-dimethylformamide to obtain a compound shown in a formula IV; and S4, reacting the compound shown in the formula IV with (5,6-dihalo-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile. The receptor material provided by the present disclosure can effectively improve the open-circuit voltage and photoelectric conversion efficiency of organic photovoltaics cells including the receptor material. The present disclosure further provides an organic photovoltaic cell including the above receptor material and a method for preparing the organic photovoltaic cell.

Abstract: A multi-stage pressure yielding and anti-impact device for anchoring support is proposed, which includes an anti-impact component, a secondary pressure yielding component, and a primary pressure yielding component. The primary pressure yielding component and the secondary pressure yielding component each include an outer sleeve, an inner extrusion sleeve, and an expansion platform, and the expansion platform is arranged at a bottom end of the inner extrusion sleeve. A buffering and energy-absorbing material filling body is arranged between the outer sleeve and the inner extrusion sleeve. An outside diameter of the outer sleeve in the primary pressure yielding component is equal to that of a large-diameter end of the expansion platform in the secondary pressure yielding component, and the outer sleeve in the primary pressure yielding component is pressed against a bottom of the expansion platform in the secondary pressure yielding component.

Abstract: A Nb-element micro-alloyed bulk multi-component alloy with high-temperature resistance and wear resistance, a preparation method therefor, and applications thereof are provided. The alloy includes chemical components at corresponding contents: 2.10-2.24 wt % of Al, 20.70-20.86 wt % of Cr, 35.20-35.54 wt % of Ni, 19.10-19.46 wt % of Ti, 0.70-0.85 wt % of Nb, and the balance of Fe and unavoidable impurities, and the chemical components need to simultaneously meet relations: (1) 24.76?Fe/Nb?31.72; (2) 6.81?Fe/(Nb+Al)?7.93; (3) 1.04?Fe/(Nb+Ti)?1.13. Wear resistance of the alloy is 4-5 times higher than that of a traditional wear-resistant material NM500 in terms of the same hardness. After two-step tempering heat treatment under the same parameters, the NM500 is reduced in hardness by 58.64-68.93% with respect to its quenched and tempered condition, and the hardness of material of this invention is reduced by 31.75-37.74% with respect to its as-cast condition.

Abstract: A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.

Abstract: Provided in the present invention are a geologically constrained infrared imaging detection method and system for an urban deeply-buried strip-like passage, pertaining to the crossing fields of geophysics and remote sensing technology.

Abstract: The disclosure belongs to the field of image segmentation in medical image processing and discloses a three-dimensional medical image segmentation method and system based on short-term and long-term memory self-attention models, in which the method can segment a target area image in the medical image, which includes the following. (1) A training set sample is established. (2) Processing is performed on the original three-dimensional medical image to be segmented to obtain a sample to be segmented. (3) A three-dimensional medical image segmentation network based on short-term and long-term memory self-attention is established and trained. (4) The sample to be segmented is input to the network, and then a segmentation result of the target area in the sample to be segmented is output. By combining CNN and Transformer, a new model for accurate real-time segmentation of the target area (such as a tumor) in the three-dimensional medical image is obtained.

Abstract: The disclosure discloses a laser opto-ultrasonic dual detection method and device using a pulse laser incident on the surface of a sample to generate plasma and the optical emission and ultrasonic waves are generated, to simultaneously analyze the element compositions, structural defects and residual stress of the sample. The detection system includes an excitation unit, a spectrum detection module, an ultrasonic detection module and an analysis control module. The digital delayer generator is connected to the computer, the high-precision 3D displacement platform is electrically connected to the digital delayer generator. The the pulsed laser is focused on and incident onto the surface of the sample to be tested through modulation of the optical path system to generate plasma, which simultaneously generate optical emission and ultrasonic waves. The ultrasonic detection unit is configured to detect the ultrasonic waves. The spectrum detection unit is configured to detect the plasma emission spectrum.

Abstract: The invention provides a composite particle material for selective laser sintering (SLS), which is composed of an inorganic powder coated with a binder. The composite particulate material is formed by mixing the inorganic powder and the binder to have the binder directly coated on the outer surface of the inorganic powder. In addition, the inorganic powder to be coated by the binder is preferably using a powder having a smaller particle size and a larger particle size distribution, and thereby the production cost can be greatly reduced. Further, since the outer surface of the inorganic powder is coated with the binder, there are no problems such as causing oxidation of the inorganic powder and so on. Furthermore, manufacturing the composite particle material can be easily carried out in a general ambient or an atmospheric environment, and the powder material after use is recyclable.

Abstract: The present disclosure discloses a plasma purification device for purifying catering oil fume and a method for purifying catering oil fume, relating to the technical field of atmospheric pollution control. The plasma purification device successively includes in a flow direction of airflow an inlet, a rotary discharge module configured to negatively charge oil fume particulate matter with a particle size between 2 ?m and 50 ?m in the catering oil fume; an electrostatic adsorption module configured to capture negatively charged oil fume particulate matter; a back corona catalytic module configured to treat VOCs in the catering oil fume; and an outlet. The rotary discharge module includes a central rod arranged parallel to the flow direction of airflow and a plurality of barbed corona electrodes arranged around the central rod.

Abstract: A Y-branch type phase-change all-optical Boolean logic device comprises a waveguide of a Y-branch structure and phase change function units covered over the waveguide. In the logic implementation method, a light pulse having a large power is employed to perform a write operation on the phase change function unit, so that the phase change function unit is heated to generate a crystallization or amorphization phase change, thereby causing a difference in optical properties under two states; the state of the phase change function unit is read by employing a light pulse having a small power, and the state of its phase change material is not changed. By defining input logic signals respectively and defining three operation steps, an operation mode reconfigurable logic can be implemented, and all 16 binary Boolean logic calculations are implemented in a simple structure by means of step-by-step operation.

Abstract: The disclosure discloses a magnetic levitation planar motor workbench having a double-layer winding of coarse and fine drive, which belongs to the technical field of planar motors, and includes a stator and a mover. The vertically magnetized permanent magnets and the horizontally magnetized permanent magnets in the stator are arranged in a Halbach arrangement; the mover is located on the enhanced side of the air gap magnetic field above the stator. The mover adopts the double-layer winding of unequal heights, and the height of the upper first winding is smaller than the lower second winding. Each layer of winding may generate driving forces in six directions to achieve six-degree-of-freedom driving.