Abstract: Embodiments of the present disclosure provide a communication method and apparatus, applied to nodes supporting short-range communication, for example, Bluetooth nodes or nodes in an in-vehicle short-range communication system. The method includes receiving an association request message from a second node and determining a group key of a first communication group. The first communication group is a communication group to which the second node belongs. The method further includes encrypting the group key of the first communication group, based on a shared key between a first node and the second node, to obtain a first protection key and sending a first association establishment message to the second node. The first association establishment message includes a first protection key.

Abstract: Provided is a flat bulb that includes a lampshade having a lampshade body portion and a lampshade connection portion located at the bottom of the lampshade body portion, a light-emitting element, a driving unit electrically connected to the light-emitting element, and a base connected to the lampshade connection portion for electrically connecting the flat bulb to a socket, the light-emitting element being arranged in an inner space of the lampshade and/or the base, and at least a part of the lampshade body portion having a flat shape. Accordingly, the flat bulb of the present utility model is of a unique design for decorative purposes and can be adapted to various different shapes, and the flat bulb can be fitted to various sockets by the user as required.

Abstract: A device for loop closing and breaking of a power distribution grid based on decoupled voltage regulation is provided. The device comprises a voltage-regulation phase shifter, a control system, a voltage acquisition device and a loop closing switch. The voltage acquisition device acquires voltage signals on two sides of the loop closing switch performing a loop closing or breaking operation and transmits the voltage signals to the control system. The control system calculates a compensating voltage amplitude and phase-angle according to the voltage signals, and sends an instruction to the voltage-regulation phase shifter according to the compensating voltage amplitude and phase-angle. The voltage-regulation phase shifter outputs the compensating voltage amplitude and phase-angle according to the instruction from the control system, to compensate for a voltage difference between the two sides of the loop closing switch.

Abstract: A flush toilet includes a reservoir tank, a bowl, a rim spout port, a discharge trap conduit, a jet spout port configured to spout flush water toward an inlet of the discharge trap conduit, a jet water conduit configured to supply the flush water from the reservoir tank to the jet spout port, and a discharge device configured to supply or stop supplying the flush water to the jet water conduit, wherein the flush water is spouted at a first flow rate from the jet spout port when the discharge device is driven and the flush water in the reservoir tank flows into the jet water conduit and, after spouting of the first flow rate ends, the flush water is spouted at a second flow rate from the jet spout port due to the flush water retained in the jet water conduit flowing toward the jet spout port.

Abstract: Preparation method for electrolyte separator of semi-solid-state secondary battery, energy storage apparatus, and electrical device. Preparation method includes following steps: coating first solution on surface of base film, and performing first curing to form first intermediate layer on surface of base film, first solution including linear monomer, first thermal initiator, and first electrolyte solution; and coating second solution on surface of first intermediate layer, and performing second curing to form second intermediate layer on surface of base film, second solution including multi-branched monomer, second thermal initiator, and second electrolyte solution; and coating third solution on surface of second intermediate layer, and performing third curing to obtain electrolyte separator, third solution including nitrile-containing monomer, third thermal initiator, and third electrolyte solution.

Abstract: Provided are a display apparatus, a display panel and a display baseplate. The display baseplate includes: a substrate; a light-blocking layer on the substrate, and including light-transmitting holes; a first light-adjusting layer at a side of the light-blocking layer; and first light-focusing bodies at a surface of the first light-adjusting layer away from the light-blocking layer, where a refractive index of the first light-adjusting layer is different from a refractive index of each of the first light-focusing bodies. In this way, use effect can be improved.

Abstract: An online monitoring method for an operating state of a secondary current circuit neutral line includes: collecting neutral line current by a high-precision sensor and processing the neutral line current to obtain fundamental components of secondary currents of each of neutral lines in a substation free from influences of harmonics and transients, and uploading the fundamental components to a protection information master station; retrieving information from an original configuration connected to the protection information master station to acquire three-phase secondary current circuit information of each bay in the substation, summarizing secondary current information of all monitoring ranges, and performing grouping and classification marking by substation, bay and winding; and conducting operation and analysis through collected information, automatically identifying and confirming an operating state of a line first, and calculating a linearity of outlier deviation and continuous dynamic trend deviation deg

Abstract: A polymer article includes an at least partially disentangled polyvinylidene fluoride (PVDF) family member composition and is characterized by an elastic modulus of at least 4 GPa and an electromechanical coupling factor (k31) of at least 0.1 at room temperature. A method of manufacturing such a polymer article may include forming an at least partially disentangled polymer composition into a polymer thin film or fiber, applying a tensile stress to the polymer article in an amount effective to induce a stretch ratio of at least approximately 5 in the thin film or fiber, and applying an electric field across a thickness dimension of the polymer article. Annealing and poling steps may separately or simultaneously accompany and/or follow the act of stretching.

Abstract: The present disclosure provides an application of fish swim bladder-derived heparin-like mucopolysaccharide in the preparation of angiogenesis inhibitors, belonging to the technical field of medication. In the present disclosure, the structural unit of the fish swim bladder-derived heparin-like mucopolysaccharide is ?-?GlcUA-[1?3]-GalNAc-4S. The fish swim bladder-derived heparin-like mucopolysaccharide has strong inhibition on angiogenesis. As shown from the results of examples in the present disclosure, the inhibitory rate of 400 mg/L fish swim bladder-derived heparin-like mucopolysaccharide on the growth of human umbilical vein endothelial cells can be up to 90.3%; and the inhibitory rate of 1 mg/mL fish swim bladder-derived heparin-like mucopolysaccharide on the angiogenesis of chick embryo chorioallantoic membrane is 77.15%.

Abstract: An intelligent management system for relay protection external operation information includes: an input module, a data snapshot module, a data acquisition module, a data conversion module, a data storage module, a fault analysis module, a report generation module, an alarm signaling module, a real-time data analysis module, and a real-time data summoning module. The input module is connected to the data snapshot module. In response to receiving a whole-station accident general input, the input module sends a time stamp signal T1 to the data snapshot module. The data snapshot module snapshots relay protection external operation information data acquired by the data acquisition module during a time period from T1?T2 to T1+T2.

Abstract: The provided is a support stand and a lighting device. The support stand includes a main body, a plurality of support legs, and a magnetic footpad assembly, where a first end of each support leg is rotatably connected to the main body; the plurality of support legs rotate relative to the main body for unfolding and folding; a second end of at least one of the support legs is provided with the magnetic footpad assembly; the magnetic footpad assembly includes a protective shell and a magnet; the magnet is disposed in the protective shell; and an angle of the magnet relative to the support leg is adjustable. When the support stand is used on the uneven ground, tabletop or wall surface, since the magnetic footpad assembly can freely adjust a magnetic attraction angle, the magnetic footpad assembly is closely attached to a target object to ensure the magnetic attraction force.

Abstract: A method and a system for optimization to non-contact micro intelligent sensing in secondary DC loop potential are provided, including demodulating a weak AC current modulation signal through a demodulation circuit and amplifying the weak AC current modulation signal; amplifying the weak AC current modulation signal to output a stable and amplified measurable potential signal; processing the potential signal for noise to obtain a stable DC potential signal; inputting the DC potential signal to a comprehensive computing module for analysis and processing; using micro sensors to measure information. The measured potential results are input to the comprehensive computing module to analyze and correct, and the measurement results are output to the communication module for external output. The equipment is packaged to form a potential collection “probe” and a potential measurement “unit”. The potential measurement “unit” supports multiple potential collection “probes” for accessing.

Abstract: The invention discloses an intelligent operation and maintenance control platform and system for a secondary power system, belonging to field of power system operation and maintenance technology. The platform includes a interval layer, a transmission layer, a station control layer, a system layer, a platform layer, an application layer, and a disaster recovery backup centre. By collecting data from a security system and external information system, and sharing data with other application platforms of a secondary system, problems of omission, repetition, and isolation in current data collection are solved.

Abstract: A flush toilet includes a bowl and a drain trap pipe line. The bowl includes a waste receiving surface for human waste, a rim above the waste receiving surface, a shelf between the waste receiving surface and the rim, and a standing water part such that a standing water surface forms inside the standing water part. The drain trap pipe line is connected to a lower part of the bowl and configured to discharge human waste. The rim includes an inner circumferential surface, and one rim discharge port configured to generate a swirling flow of flush water by discharging the flush water along the inner circumferential surface. The shelf extends along an entire circumference of the bowl. An outer circumference edge of the shelf has a minimum curvature radius in a first region when viewed in plan. A width of the shelf has a minimum in the first region.

Abstract: A flush toilet is configured to discharge human waste by flushing with flush water, and includes a bowl and a drain trap pipe line. The bowl includes a waste receiving surface configured to receive human waste, a rim above the waste receiving surface, and a standing water part below the waste receiving surface such that a standing water surface forms inside the standing water part. The drain trap pipe line is connected to a lower part of the bowl and configured to discharge human waste. The rim includes an inner circumferential surface, and one rim discharge port configured to generate a swirling flow by discharging the flush water along the inner circumferential surface. The waste receiving surface includes an upper part having a concave shape extending around an entire circumference of the bowl, and a lower part having a convex shape extending around the entire circumference of the bowl.

Abstract: The present disclosure provides processes for making enantiomerically pure isoxazoline compounds of formula (1), The present disclosure also provides processes for making enantiomerically pure isoxazoline compounds of formula (1) characterized by improving the enantiomeric purity of 3-methyl-5-[(5S)-5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4H-isoxazol-3-yl]thiophene-2-carboxylic acid by crystallization.

Abstract: Provided are a display apparatus, a display panel and a display baseplate. The display baseplate includes: a substrate; a light-blocking layer on the substrate, and including light-transmitting holes; a first light-adjusting layer at a side of the light-blocking layer; and first light-focusing bodies at a surface of the first light-adjusting layer away from the light-blocking layer, where a refractive index of the first light-adjusting layer is different from a refractive index of each of the first light-focusing bodies. In this way, use effect can be improved.