Abstract: This disclosure relates to a curable composition comprising (a) at least one light polymerizable liquid; (b) at least one epoxy precursor dissolved in component (a); and (c) at least one photoinitiator; wherein the curable composition exhibits no more than 15% increase in viscosity at 25° C. after 7 days at room temperature.

Abstract: The present disclosure relates to the technical field of lamp bulb, and discloses a shadowless waterproof light-emitting diode (LED) lamp bulb, including a lamp holder and a lampshade connected to the lamp holder, and further including a lampwick component and a sealing plug; the lampwick component includes a base plate, a first metal support line, and a second metal support line; and the other end of the first metal support line and the other end of the second metal support line are both electrically connected to the lamp holder. The present disclosure has the following advantages: 1. The structure of a luminous element is improved, which effectively solves the technical problem of light shadow generated by the lamp bulb during use; 2. The lamp bulb has a novel structure and higher decorability; and 3. The overall lamp bulb is convenient to assemble and higher in production and assembling efficiency.

Abstract: The present disclosure relates to a nitrogen-doped porous carbon material and a preparation method and use thereof. In the present disclosure, the preparation method of a nitrogen-doped porous carbon material includes the following steps: conducting carbonization on a biomass material to obtain a carbon source; and mixing the carbon source with a potassium 4-aminobenzoate aqueous solution, and drying and conducting calcination in a protective atmosphere sequentially to obtain the nitrogen-doped porous carbon material. In the preparation method, the potassium 4-aminobenzoate is used as a nitrogen source as well as an activator for preparing the nitrogen-doped porous carbon material. Nitrogen doping is simultaneously completed during the activation, and the nitrogen-doped porous carbon material can be prepared through one-step calcination.

Abstract: A lighting device includes a base, a panel assembly, and a power supply assembly. The panel assembly is at least partially connected to the base and includes a luminous body. The power supply assembly is connected to the lighting device. The panel assembly includes a main panel and a plurality of auxiliary panels. The main panel is fixedly connected to the base, a first auxiliary panel among the plurality of auxiliary panels is rotatably connected to the main panel, and a second auxiliary panel among the plurality of auxiliary panels is rotatably connected to the first auxiliary panel.

Abstract: A composite material and a preparation method therefor and a lithium-ion battery positive electrode material. The preparation method for the composite material comprises the following steps: performing first calcination treatment on a mixture of a manganese source, a nickel source, a lithium source and a cobalt source to obtain cobalt-doped lithium nickel manganese oxide; and performing second calcination treatment on a mixture of the cobalt-doped lithium nickel manganese oxide and silicon dioxide.

Abstract: A bearing and a sealing device. The sealing device includes: a skeleton; and a sealing part, which, taken as a whole, is of an annular structure, the sealing part comprising an elastic part and a plastic part, and the elastic part being fixed to the skeleton. After the sealing device is arranged between a bearing inner ring and a bearing outer ring, the plastic part and the bearing inner ring form contact sealing, the elastic part and the plastic part are relatively fixed, and in the radial direction, at least part of the plastic part is arranged between the bearing inner ring and the elastic part. The coefficient of friction of the material of the plastic part is smaller than the coefficient of friction of the material of the elastic part.

Abstract: An integrated device and method for enrichment, purification and separation of microplastics in a secondary effluent are provided. This integrated device comprises a micro-spray system and a filtering system with multi-stage filtering units, and marked screen meshes were installed in each filtering unit. The microplastics in secondary effluent are enriched on the surface of the marked screen meshes through the retaining effect. Then, lower concentration of alkali, acid or oxidant combined with the heat treatment to weaken the interaction forces between the inorganic/organic foulants and the enriched microplastic. On this basis, the micro-spray system was used to rinse the multistage filtration system, which generated shear force to carry away the foulants on the surfaces of the enriched microplastics, thereby achieving the purification and separation of microplastics synchronously. These are performed in the marked screen meshes, in which the microplastic are not subject to any path transfer or loss.

Abstract: The present application provides an electromechanical brake and vehicle. The electromechanical brake includes a first brake motor and a second brake motor, a transmission device linked to the first brake motor and the second brake motor, and a brake actuator linked to the transmission device, with the transmission device transmitting a brake torque of the first brake motor and the second brake motor to the brake actuator. The transmission device includes a differential, with the differential being coupled to the first brake motor and the second brake motor respectively to receive the input torque of the first brake motor and the second brake motor, and output the integrated torque to the brake actuator.

Abstract: Provided are a viral vector-based RNA delivery system and a use thereof. The RNA delivery system comprises a viral vector. The viral vector carries an RNA fragment needing to be delivered, and can be enriched in organ tissues of a host. In the host organ tissues, the viral vector can endogenously and spontaneously form a composite structure containing the RNA fragment. The composite structure can enter and bind to target tissues, and feed the RNA fragment into the target tissues. The viral vector has a targeting tag. The composite structure is an exosome. The viral vector RNA delivery system is safe and reliable, and has good druggability and high universality.

Abstract: Provided are a gene circuit, an RNA delivery system and the use thereof. Specifically, the gene circuit comprises at least an RNA fragment capable of inhibiting gene expression and/or a targeting tag having a targeting function. The gene circuit can be delivered to a host, enriched in organ tissues of the host and self-assembled to form a complex structure, and inhibits gene expression by means of the RNA fragment, thereby treating diseases. The delivery system comprises the gene circuit and a delivery carrier capable of delivering the gene circuit to organ tissues of a host for enrichment. The provided gene circuit has a targeting function and a treatment function, can quickly and accurately reach target organs and target tissues to exert a treatment effect, and is highly efficient with good results. The safety and reliability of the provided RNA delivery system are fully verified, and the RNA delivery system has good druggability, high universality, and great economic benefits and application prospects.

Abstract: A method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese is provided in the present application, relating to the technical field of high-manganese steel smelting, where the dephosphorization of ferromanganese is carried out under reducing atmosphere conditions through mediate-frequency induction furnace to obtain molten ferromanganese with lower phosphorus content, which is subsequently mixed with low phosphorus molten steel obtained by smelting in oxidative period of electric arc furnace in LF ladle refining furnace to make the Mn content of steel reach the requirement of high-manganese steel, and smelting is carried out under the condition of reducing atmosphere by adjusting the composition and temperature of the molten steel to meet the requirements of the target composition of the steel grade before tapping the steel.

Abstract: Provided is a system including a robot and an application of a communication device. The robot includes a medium storing instructions that when executed by a processor of the robot effectuate operations including: obtaining first data indicative of a relative position of the robot in a workspace; actuating the robot to drive within the workspace to form a map including mapped perimeters that correspond with physical perimeters of the workspace while obtaining second data indicative of movement of the robot; and forming the map of the workspace based on at least some of the first data, wherein the map of the workspace expands as new first data are obtained, until all perimeters of the workspace are included in the map. The application is configured to display information, such as the map, and receive user input.

Abstract: Provided are a series of 5,6-dihydrothieno[3,4-h]quinazoline compounds as represented by formula (P) and pharmaceutically acceptable salts thereof, and the use of the compounds or pharmaceutically acceptable salts thereof in the preparation of solid tumor drugs, such as solid tumor drugs associated with selective PLK1 inhibitors.

Abstract: A reconfigurable sensor network uses continuous-variable (CV) multipartite entangled quantum states for distributed RF sensing with uncertainties below the standard quantum limit. A CV multipartite entangled state is generated with a quantum circuit that splits a squeezed vacuum state into spatially separated optical modes that are entangled. Each optical mode is transmitted to a RF-photonic sensor that imposes, on the corresponding optical mode, a quadrature displacement based on the local properties of an RF signal. A homodyne detector then measures the quadrature displacement. A post-processor combines the measurements to estimate a global property of the RF signal, such as an angle-of-arrival. To enable distributed sensing over large distances, the RF-photonic sensors may be spatially separated by several kilometers, or more. Alternatively, the RF-photonic sensors may be integrated into a single photonic system, such as a photonic integrated circuit.

Abstract: The present disclosure is directed to systems and methods for synthesizing a recombinant polymeric amyloid and recombinant polymeric amyloid fibers. In some embodiments, the methods comprise synthesizing tandem repeats of an amyloid peptide and a glycine-rich linker peptide in vivo in a heterologous host. In other embodiments, the recombinant polymeric amyloid fibers comprise a plurality of polymeric amyloid fibrils each comprising a plurality of ?-sheet crystals, wherein the ?-sheet crystals comprise tandem repeats of an amyloid peptide and a glycine-rich linker peptide, and wherein the plurality of ?-sheet crystals are aligned in parallel with a fiber axis.

Abstract: A signal time delay estimation method includes: obtaining, at an apparatus, a plurality of RFFPs (radio frequency fingerprints) each based on a plurality of signal measurements of respective signals transferred between respective ones of a plurality of wireless signal transfer devices; obtaining, at the apparatus, a plurality of locations corresponding to the plurality of wireless signal transfer devices; and implementing, at the apparatus, a machine-learning algorithm to provide at least one first indication of at least one first signal time delay to convert between a first wireless signal at a target device, of the plurality of wireless signal transfer devices, and a first baseband signal at the target device based on the plurality of RFFPs and the plurality of locations.

Abstract: The present invention discloses systems and methods of measuring environmental information in a mine tunnel. The system may comprise an ultrasonic anemometer, a multi-parameter monitor, a data acquisition module, a central control platform, a data communication module, a flexible manipulator, a power conversion module, a display and alarm module, and a computer. The multi-parameter monitor may comprise at least one of an infrared detector, a CH4 detector, a CO gas sensor, an O2 gas sensor, a CO2 gas sensor, and a temperature and humidity sensor. The system may also measure the airflow in large sections of a mine tunnel through the flexible manipulator. The method may be able to remote measure the underground environment and airflow during normal production of the mine, which helps improve the abilities of mine disaster response and relief while ensuring the safety of emergency rescue personnel.

Abstract: This application relates to a galvanometer-based laser synchronization controlling method, calibration method and apparatus, and a LiDAR. The galvanometer-based laser synchronization controlling method includes obtaining a fast-axis feedback signal when a galvanometer scans; obtaining a first phase difference between a fast-axis drive signal and the fast-axis feedback signal and obtaining a second phase difference between an emission period of a laser beam and the fast-axis drive signal; and setting a phase for the fast-axis drive signal based on the first phase difference and the second phase difference.

Abstract: The present disclosure provides a modular excavator, including a plurality of assembly modules that are detachably connected, the plurality of assembly modules including: a frame turntable base module; a track beam assembly module connected to the frame turntable base module; a track module connected to the track beam assembly module; a slewing drive module connected to the frame turntable base module; a power assembly module connected to the frame turntable base module; a counterweight module connected to the power assembly module; a cab module connected to the frame turntable base module; a fuel tank module connected to the frame turntable base module; a boom assembly module connected to the frame turntable base module; a bucket arm assembly module connected to the boom assembly module; and a work tool module connected to the bucket arm assembly module.

Abstract: Disclosed are a material analysis method based on the crystal structure database, a system, a computer-readable storage medium and an application. The material analysis method includes comparing experimental pattern information obtained from examination of a to-be-tested sample with theoretical pattern information calculated from material structure data in the crystal structure database, and obtaining crystallographic information and phase composition of the to-be-tested sample through intelligent analysis. The crystallographic information include space group, unit cell parameter, and specific coordinates of atoms in unit cell. The crystal structure database has material structure data obtained by experimental measurement and/or theoretical prediction, including chemical formula, space group, unit cell parameter and specific coordinates of atoms in unit cell.