Abstract: Methods, systems, and devices related to wireless communication are described.

Abstract: Provided is a photovoltaic module, including: a plurality of solar cell strings arranged at intervals and each including a front surface and a rear surface arranged opposite to each other; a first encapsulation adhesive film and a back panel located on the rear surface of the solar cell string; and first embossing structures provided on one side of the back panel away from the first encapsulation adhesive film. An angle ? between a side surface of the first embossing structure and a plane of the back panel is in a range from 42° to 80°.

Abstract: The present disclosure relates to a risk early warning method and system for hydrogen leakage, and relates to the field of hydrogen leakage. The method includes: obtaining ventilation information of a hydrogen-related area; carrying out grid division on a pipeline system of the hydrogen-related area to obtain a gridded pipeline system; determining a risk coefficient corresponding to each grid of the gridded pipeline system according to leakage sources of the pipeline system; determining a high-risk region by means of a jet cone model according to the risk coefficients; determining a medium-risk region, a low-risk region and a safe region according to the risk coefficients and the ventilation information; and carrying out risk early warning according to the high-risk region, the medium-risk region, the low-risk region and the safe region.

Abstract: The present disclosure relates to a risk early warning method and system for hydrogen leakage, and relates to the field of hydrogen leakage. The method includes: obtaining ventilation information of a hydrogen-related area; carrying out grid division on a pipeline system of the hydrogen-related area to obtain a gridded pipeline system; determining a risk coefficient corresponding to each grid of the gridded pipeline system according to leakage sources of the pipeline system; determining a high-risk region by means of a jet cone model according to the risk coefficients; determining a medium-risk region, a low-risk region and a safe region according to the risk coefficients and the ventilation information; and carrying out risk early warning according to the high-risk region, the medium-risk region, the low-risk region and the safe region.

Abstract: The present invention discloses a fault diagnosis method under a convergence trend of a center frequency, including: (1) acquiring a dynamic signal x(t) of a rotary machine equipment; (2) setting initial decomposition parameters of a variational model; (3) decomposing the dynamic signal x(t) by using the variational model with the set initial decomposition parameters, and traversing a signal analysis band and performing iterative decomposition on the dynamic signal x(t) under the guidance of a convergence trend of a center frequency, to obtain optimized modals {m1 . . . mn . . . mN} and corresponding center frequencies {?1 . . . ?n . . . ?N}; (4) searching a fault related modal mI, guiding parameter optimization by using a center frequency ?I of the fault related modal mI, and retrieving an optimal target component mI including fault information; and (5) performing envelopment analysis on the optimal target component mI, and diagnosing the rotary machine equipment according to an envelope spectrum.

Abstract: The chemically cross-linked hydrogel is a hydrogel formed by reaction of silk with a crosslinking agent, and the crosslinking agent is a diglycidyl ether crosslinking agent. The hydrogel is obtained by dissolving silk fibers in a lithium bromide solution and crosslinking through the crosslinking agent. The hydrogel has good elasticity, and can recover more than 90% of its volume/height after being compressed for 100 cycles with a compressive deformation of 20%. The silk is very stable in matrix structure and mechanical properties. After incubation in PBS at 37° C. for 30 days, the content of ?-sheets in the secondary structure elements of the silk is less than or equal to 40%, and its compressive modulus is less than or equal to 100% (with a compressive deformation of 20%). The hydrogel has good biocompatibility and adjustable biodegradability, and can be used for repairing or filling tissues in subjects.

Abstract: The present invention discloses a fault diagnosis method under a convergence trend of a center frequency, including: (1) acquiring a dynamic signal x(t) of a rotary machine equipment; (2) setting initial decomposition parameters of a variational model; (3) decomposing the dynamic signal x(t) by using the variational model with the set initial decomposition parameters, and traversing a signal analysis band and performing iterative decomposition on the dynamic signal x(t) under the guidance of a convergence trend of a center frequency, to obtain optimized modals {m1 . . . mn . . . mN} and corresponding center frequencies {?1 . . . ?n . . . ?N}; (4) searching a fault related modal mI, guiding parameter optimization by using a center frequency ?I of the fault related modal mI, and retrieving an optimal target component mI including fault information; and (5) performing envelopment analysis on the optimal target component mI, and diagnosing the rotary machine equipment according to an envelope spectrum.

Abstract: The present invention provides an array substrate and a display panel. A second data line is disposed on the array substrate, so that a first data line is connected to the second data line. Therefore, after the first data line is disconnected, signals can be transmitted from the second data line, which solves a technical problem that current display panels cannot solve poor display caused by disconnection of the data lines.

Abstract: A display panel and a manufacturing method thereof are provided. The method includes: forming a flexible substrate on a display area and a welding area of a glass substrate; sequentially forming a switch array layer and an organic light-emitting display layer on the flexible substrate and an edge area of the glass substrate; patterning the switch array layer, such that a switching element and a metal wire are respectively formed on the display area and the welding area, and a portion of the switch array layer and the organic light-emitting display layer on the edge area are removed.

Abstract: The present invention provides an array substrate and a display panel. A second data line is disposed on the array substrate, so that a first data line is connected to the second data line. Therefore, after the first data line is disconnected, signals can be transmitted from the second data line, which solves a technical problem that current display panels cannot solve poor display caused by disconnection of the data lines.

Abstract: A display panel and a manufacturing method thereof are provided. The method includes: forming a flexible substrate on a display area and a welding area of a glass substrate; sequentially forming a switch array layer and an organic light-emitting display layer on the flexible substrate and an edge area of the glass substrate; patterning the switch array layer, such that a switching element and a metal wire are respectively formed on the display area and the welding area, and a portion of the switch array layer and the organic light-emitting display layer on the edge area are removed.

Abstract: Provided are a smart home system and control method therefor, the system comprising: a client (8), a cloud server (1), a router (2), a control terminal (3), gateway devices (4), and household appliances (5). The control method comprises: a client transmits control instructions containing preset time and a scene command to the cloud server (1); the cloud server (1) transmits the control instructions to the control terminal (3) via the router (2); the control terminal (3) transmits corresponding scene command to the gateway devices (4); the gateway devices (4) receive the scene command, generate a control command, and transmit the control commands to the household appliances (5); and the household appliances (5) receive and execute the control command. The air-conditioner can be automatically controlled by simply setting a scene profile and a schedule via APP software; and the wired connection is changed into a wireless connection.

Abstract: In some aspects, compositions and methods useful for generating stem cells from epithelial cells are disclosed.