Abstract: A sound absorber is configured as a rectangular hexahedral box and forms a porous double-layer Helmholtz resonance sound absorbing structure, at the same time, the sound absorber in the form of a box forms a structural resonance sound absorbing device itself, and the first-order natural mode frequency of the device is identical to that of a wheel air chamber. When the box-type sound absorbing structure is assembled in a wheel, double functions of absorbing acoustic resonance of the wheel air chamber under the organic combination of Helmholtz resonance sound absorption and structural resonance sound absorption can be realized.

Abstract: An on-line detection system for defects of an MEA is provided. The detection system includes a workbench, two connecting rods are arranged inside the workbench, two ends of the two connecting rods are both connected to two side walls of the workbench by means of bearings, and conveying rollers are fixedly arranged outside the two connecting rods in a sleeving manner. One side of the workbench is fixedly provided with a first electric motor, and an output end of the first electric motor is fixedly connected to one of the connecting rods. Belt pulleys are fixedly arranged outside the two connecting rods in a sleeving manner, and a belt is arranged outside the two belt pulleys in a sleeving manner. A hollow roller is arranged on an inner side of the workbench, and a plurality of exhaust holes are provided in a top of the hollow roller.

Abstract: Matrix-filled liquid radiation curable resin compositions for additive fabrication are described and claimed. Such resins include a cationically polymerizable component that is an aliphatic epoxide, a multifunctional (meth)acrylate component, a cationic photoinitiator, a free-radical photo initiator, and a matrix of inorganic fillers, wherein the matrix further constitutes prescribed ratios of at least one microparticle constituent and at least one nanoparticle constituent. Also described and claimed is a process for using the matrix-filled liquid radiation curable resins for additive fabrication to create three dimensional parts, and the three-dimensional parts made from the liquid radiation curable resins for additive fabrication.

Abstract: A solid heat carrier catalyst for thermal desorption of organic matter-contaminated soil and a method for preparing the same. A hollow alumina ball prepared by 3D printing is taken as a solid heat carrier, copper-nickel-vanadium composite oxide is taken as a catalytic active component, and vinyltriethoxysilane is taken as a masking agent. The ball has a diameter of 30 mm to 60 mm and a thickness of 1 mm to 2 mm. An outer surface of the ball is masked with the vinyltriethoxysilane; then the ball is pierced to make an inner surface thereof connected with the outside through channels; the ball is then immersed in a catalytic active component precursor solution; and finally, drying and calcination are performed to obtain the solid heat carrier catalyst for thermal desorption of organic matter-contaminated soil. This product is widely applicable to the field of thermal desorption of organic contaminants of soil.

Abstract: The application relates to a wheel with a sound absorption device, wherein the sound absorption device is arranged in a wheel air chamber to reduce acoustic resonance, the sound absorption device comprises two resonance sound absorption structure units which are connected in parallel, a first sound absorption frequency band of a first resonance sound absorption structure unit and a second sound absorption frequency band of a second resonance sound absorption structure unit are adjacent to each other or partially overlap with each other, and the resonance frequency of the wheel air chamber is contained at the adjacent part of the first sound absorption frequency band and the second sound absorption frequency band or in the overlapping area of the first sound absorption frequency band and the second sound absorption frequency band.

Abstract: An integrated MSD connector test device including: a housing; an MSD connector housed in the housing and having a first polarity contact and a second polarity contact, wherein the second polarity contact includes two contact portions separated from each other; a cable extending at least partially outside of the housing, two ends of the cable being electrically connected to the two contact portions respectively; and a first polarity port and a second polarity port accessible from outside of the housing, the first polarity port being electrically connected to the first polarity contact, and the second polarity port being electrically connected to one of the contact portions, wherein the first polarity is a positive or negative, and correspondingly, the second polarity is a negative or positive.

Abstract: The present disclosure provides an iron-modified acoustic material, prepared by homogeneously mixing an iron-modified molecular sieve, a binder, a dispersant and an auxiliary agent and then shaping the mixture; wherein the content of the iron-modified molecular sieve is not less than 70%, the content of iron is 0.004-1.7%, the dry basis content of the dispersant is 0-1%, and the dry basis content of the auxiliary agent is 0-15%, based on 100% of the total weight of the iron-modified acoustic material. In the present disclosure, a molecular sieve is modified with an iron source to produce the iron-modified molecular sieve, and the iron-modified acoustic material is produced from the iron-modified molecular sieve as a raw material and provided in a rear cavity of a speaker, which can substantially improve its stability and reliability in terms of acoustic performance.

Abstract: The present disclosure provides an alkali metal-modified acoustic reinforcing material, a production method thereof, a speaker and an electronic device. The alkali metal-modified acoustic reinforcing material is prepared by homogeneously mixing an alkali metal-modified molecular sieve, a binder, a dispersant and an auxiliary agent and then shaping; wherein the content of the alkali metal-modified molecular sieve is not less than 70%, the content of alkali metal is 0.001-1.45%, the dry basis content of the dispersant is 0-1%, and the dry basis content of the auxiliary agent is 0-15%, based on 100% of the total weight of the alkali metal-modified acoustic reinforcing material.

Abstract: The present invention relates to the fields of medicinal chemistry and pharmacotherapy, and specifically relates to the chemical compound of formula (I), and its racemate, R-isomer, S-isomer, pharmaceutically acceptable salt, and mixtures thereof, as well as its method for preparation, a pharmaceutical composition containing said chemical compound, and use as a lysine-specific demethylase 1 (LSD 1) inhibitor. The cyclopropylamine chemical compound to which the present invention relates may be used in the treatment of cancer.

Abstract: Provided is a multifunctional lithography device, including: a vacuum substrate-carrying stage configured to place a substrate and adsorb the substrate on the vacuum substrate-carrying stage by controlling an airflow, so as to control a gap between the substrate and the mask plate; a mask frame arranged above the vacuum substrate-carrying stage and configured to fix the mask plate; a substrate-carrying stage motion system arranged below the vacuum substrate-carrying stage and configured to adjust a position of the vacuum substrate-carrying stage, so that a distance between the substrate and the mask plate satisfies a preset condition; an ultraviolet light source system arranged above the mask plate and configured to generate an ultraviolet light for lithography; and a three-axis alignment optical path system configured to align the ultraviolet light with the mask plate.

Abstract: A liquid butadiene-styrene polymer, a preparation method for same and an application of same, as well as a composition, a polymer coating, an adhesive and a cross-linking agent containing the same are provided. When the total weight of the liquid butadiene-styrene polymer is taken as a reference, in the liquid butadiene-styrene polymer, the content of a styrene structural unit is 15-30 wt %, the content of a butadiene structural unit is 70-85 wt %, and the content of a 1,2-structural unit is 60-80 wt %; when the total weight of the 1,2-structural unit in the liquid butadiene-styrene polymer is taken as a reference, the content of a cyclized 1,2-structural unit is 20-60 wt %. A coating formed by the liquid butadiene-styrene polymer not only has high peel strength for a substrate, but also has improved thermal expansion performance.

Abstract: A data transmission method includes receiving, by a gateway of an integration platform as a service (iPaaS) system, a data transmission request transmitted by the iPaaS system, the iPaaS system being deployed on a first virtual private cloud (VPC) in a cloud network. The method further includes determining an address identifier of the service to be accessed by the iPaaS system, and a first transmission connection between the gateway and a data transmission circuitry associated with the service. The data transmission circuitry is connected to an Intranet, and the service is deployed in the Intranet or in a second VPC. The method further includes transmitting the data transmission request and the address identifier of the service from the gateway to the data transmission circuitry through the first transmission connection, where the data transmission circuitry transmits the data transmission request of the iPaaS system to the service.

Abstract: Matrix-filled liquid radiation curable resin compositions for additive fabrication are described and claimed. Such resins include a cationically polymerizable component that is an aliphatic epoxide, a multifunctional (meth)acrylate component, a cationic photoinitiator, a free-radical photoinitiator, and a matrix of inorganic fillers, wherein the matrix further constitutes prescribed ratios of at least one microparticle constituent and at least one nanoparticle constituent. Also described and claimed is a process for using the matrix-filled liquid radiation curable resins for additive fabrication to create three dimensional parts, and the three-dimensional parts made from the liquid radiation curable resins for additive fabrication.

Abstract: A mainboard, display device, displaying method, and computer readable storage medium are provided. The mainboard has at least two display interfaces, a detecting circuit, and a processor. The at least two display interfaces are used for connecting to different displays. The detecting circuit is coupled to the at least two display interfaces, for detecting the electrical signal of the display. The processor is coupled to the detecting circuit, for determining information about the display connected to the display interface based on the electrical signal detected by the detecting circuit.

Abstract: Provided in the present application are an acoustic reinforcing material block and an application thereof, a micro loudspeaker and an electronic device. The raw materials of the acoustic reinforcing material block include a porous material, an adhesive, and an adjuvant loaded in a structural framework. The micro loudspeaker comprises an upper housing and a lower housing which form an inner cavity, and a loudspeaker unit located in the inner cavity, wherein the inner cavity is divided into a front cavity and a rear cavity, and the front cavity is in communication with a sound outlet hole; and a front cavity resonant cavity which is in communication with the front cavity and filled with an acoustic enhancing material is provided in the upper housing.

Abstract: The present disclosure provides a porous bulk material and an electronic apparatus thereof, and an apparatus capable of reducing wind noise and an application thereof. The apparatus comprises an external sound channel, a zeolite material, and a sound pickup hole, wherein the zeolite material is disposed between the external sound channel and the sound pickup hole. The present disclosure further provides an application of the apparatus in an electronic device provided with a microphone. According to the apparatus, the wind noise can be effectively reduced, and the call quality of a communication device is obviously improved.

Abstract: A method for generating 3D printing data, a method for planning a path, a system and a storage medium are provided; the method for generating 3D printing data comprises: generating at least one slice pattern based on a projected contour of a model of a to-be-printed object, wherein each slice pattern comprises one or more texture lines, and the one or more texture lines comprise non-closed texture lines whose endpoints are located on the projected contour; and generating 3D printing data based on spatial positions of printing lines of cross-sectional patterns, with the cross-sectional patterns determined based on the at least one slice pattern. wherein the printing lines comprise texture lines. The present disclosure adopts 3D printing to realize structural designs that cannot be achieved using conventional fabrics, thereby increasing design freedom of fabrics in terms of both appearance and functionality.

Abstract: An intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines, including a frame, a speed control mechanism, a braking mechanism, an anchoring mechanism, and a sealing mechanism; the speed control mechanism is composed of a motor, rotor, etc; the braking mechanism is composed of a braking rubber cylinder and a first extrusion ring; the anchoring mechanism is composed of a rubber conical cylinder, slips, etc; and the sealing mechanism is composed of a sealing rubber cylinder and a second extrusion ring. The second extrusion ring is driven by a hydraulic rod to press the sealing rubber cylinder, causing it to expand and block the pipe wall to achieve sealing. The intelligent maintenance and repair robot inside the pipeline has the characteristics of good speed control response, wide speed range, strong ability to pass bends, stable braking process, and high sealing reliability.

Abstract: The present invention provides a 2-polysubstituted aromatic ring-pyrimidine derivative and an optical isomer thereof, or a pharmaceutically acceptable salt or solvate thereof, the compound, and an optical isomer thereof or a pharmaceutically thereof acceptable salts or solvates can be used in the preparation of anti-tumor drugs. The invention designs and synthesizes a series of novel small molecule Chk1 inhibitors by using N-substituted pyridin-2-aminopyrimidine obtained by structure-based virtual screening as a lead compound, and carries out Chk1 kinase inhibitory activity test. The experiment confirmed that said compounds possess potent anticancer activity, Chk1 kinase inhibitory activity, and are promising Chk1 inhibitors, and can be used as new cancer therapeutic drugs, which can be applied to treat solid tumors or hematologic tumors related to proliferative disease of human or animal.