Abstract: The present invention relates to the technical field of mine fire prevention and extinguishing, in particular to a liquid nitrogen direct injection and low-temperature foaming intelligent filling system based on mine fire area characteristics and an application method, comprising a liquid nitrogen storage tank, a liquid nitrogen direct injection system and a low-temperature foaming system, wherein the liquid nitrogen storage tank communicates with a liquid nitrogen pressurizing device through a main pipeline; a temperature control unit is arranged on the main pipeline; and the liquid nitrogen pressurizing device is connected with the liquid nitrogen direct injection system and the low-temperature foaming system, respectively, liquid nitrogen is directly injected into a foam liquid, to prepare a low-temperature foam type fire preventing and extinguishing material by means of forced convection, membrane boiling, explosion boiling and nucleate boiling between the liquid nitrogen and water.

Abstract: An inspection system and method, the system includes: a ray source rotatable between at least two scanning positions around a rotation axis, a rotation angle of the ray source between two adjacent scanning positions being greater than an angle of adjacent target spots of the ray source relative to the rotation axis; a detector assembly; and a conveying device for carrying an object. The ray source and the detector assembly are movable in a traveling direction relative to the conveying device so that the object enters an inspection region. When the ray source is at one of the scanning positions, the ray source and the detector assembly move in the traveling direction and the ray source emits X-rays; and when the ray source and the detector assembly move a predetermined distance in the traveling direction, the ray source rotates around the rotation axis to another one of the scanning positions.

Abstract: An inspection system and method, and the system includes: a ray source; a detector assembly; and a conveying device for carrying an aviation pallet cargo. The ray source and the detector assembly are movable in a traveling direction parallel to the central axis relative to the conveying device so that the aviation pallet cargo enters an inspection region, the ray source is translatable between a plurality of scanning positions, and a translation distance of the ray source between two adjacent scanning positions is greater than a spacing between adjacent target spots of the ray source. When the ray source is located at one of the scanning positions, the ray source and the detector assembly move in the traveling direction and the ray source emits X-rays; and when the ray source and the detector assembly move a predetermined distance in the traveling direction, the ray source translates to another one of the plurality of scanning positions.

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes sub-pixels, at least part of the sub-pixels include a light emitting element, the light emitting element includes a light emitting functional layer, and a first electrode and a second electrode, the first electrode is located between the light emitting functional layer and the base substrate, and the light emitting functional layer includes film layers; the display substrate further includes a first defining structure located between at least two adjacent sub-pixels, the first defining structure includes an end portion located between the light emitting functional layer and the first electrode, and the first electrode overlaps with the end portion in the direction perpendicular to the base substrate; at least one of the film layers in at least one sub-pixel is disconnected at the end portion of the first defining structure.

Abstract: A ray scanning apparatus for a luggage conveying system. The apparatus includes: a conveying device for conveying an object under inspection to pass through a scanning area of the ray scanning apparatus; and a plurality of scanning beam planes disposed on a plurality of scanning planes arranging in a conveying direction of the object under inspection, each scanning beam plane includes a ray source module and a detector assembly which are arranged opposite to each other, and the ray source module includes a plurality of ray source points for emitting ray beams, wherein the ray source modules of the plurality of scanning beam planes are arranged on lower, left, and right sides of the scanning area respectively.

Abstract: A control circuit used in a switching converter having a switch and an inductor. The control circuit has an error amplifying circuit, a current comparing circuit, a clock generator and a constant OFF time generator. The error amplifying circuit receives a voltage reference signal and a voltage feedback signal indicative of an output voltage signal, and provides an error signal. The current comparing circuit compares the error signal with a current sensing signal indicative of a current flowing through the inductor, and provides a comparing signal to turn the switch OFF. When the switching converter is coupled to a filtering capacitor, the clock generator provides a clock signal to turn the switch ON, and when the switching converter is coupled to a super capacitor, the clock generator is disabled and the constant OFF time generator provides a constant OFF time signal to turn the switch ON.

Abstract: The disclosure relates to a power battery and a battery module. The power battery includes: a case including an opening; a first cap assembly covering the opening and including a liquid injection hole, and an electrode assembly disposed in the case. An end of the electrode assembly extending out of a tab is disposed opposite to the first cap assembly.

Abstract: Provided are methods, systems, and computer program products for a LiDAR with an increased dynamic range. The method includes filtering output pulses of an SiPM device to a substantially symmetric pulse shape and capturing timing information and intensity information of the filtered output pulses for at least one predetermined intensity level. The method includes monitoring saturation of the SiPM device, wherein a width of a saturation plateau of a respective output pulse is determined in response to saturation of the SiPM device. The method also includes extrapolating additional timing information and additional intensity information of the respective output pulse using the captured timing information, the captured intensity information, and the determined width of the saturation plateau.

Abstract: A ray scanning apparatus, including: a conveying device; a ray source assembly including a plurality of ray source modules arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area; and a detector assembly including a plurality of detector sets arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area, where the opening of the non-enclosed structure of the ray source assembly is opposite to the opening of the non-enclosed structure of the detector assembly, the plurality of detector sets are fixed in a same plane perpendicular to the conveying direction of the object under inspection, and the plurality of ray source modules of the ray source assembly are arranged in a plurality of different planes perpendicular to the conveying direction of the object under inspection.

Abstract: Embodiments of the present application provides a ray scanning apparatus, which includes: a conveying device for conveying an object under inspection to pass through a scanning region of the ray scanning apparatus; a ray source assembly including a plurality of ray source modules, each of the ray source modules including at least one ray source point emitting a ray beam; and a detector assembly for detecting rays transmitting through the object under inspection during scanning and including a plurality of detector sets.

Abstract: The present invention provides a method for reasonably adjusting an end-of-discharge voltage of a lithium battery with attenuation of a battery life. The method includes: acquiring an end-of-charge voltage, an end-of-discharge voltage and a rated capacity based on a basic parameter table for a lithium battery, then setting a safety end-of-charge voltage and a safety end-of-discharge voltage to obtain an initial safety discharge capacity, and finally setting a preset discharge capacity of the battery; using an Ampere-hour integration method to estimate a discharged power, taking the preset discharge capacity as a discharge standard, and stopping discharge when the discharged power reaches the preset discharge capacity; and the safety discharge capacity being gradually less than the preset discharge capacity within a battery life cycle, and the battery stopping discharge when the voltage reaches the safety end-of-discharge voltage.

Abstract: Provided are a display substrate and a preparation method thereof, and a display apparatus. The display substrate includes a display region and at least one hole region located in the display region, the hole region includes a function hole and a partition region surrounding the function hole, the partition region is provided with at least one partition dam surrounding the function hole; the partition dam includes a first partition layer disposed on a base substrate and a second partition layer disposed on a side of the first partition layer away from the base substrate, at least one partition layer includes a second sub-layer and a third sub-layer disposed on a side of the second sub-layer away from the base substrate, the third sub-layer has a protrusion with respect to a sidewall of the second sub-layer, and the protrusion and the sidewall of the second sub-layer form an inwardly recessed structure.

Abstract: Provided are an inspection system and an inspection method, the inspection system includes: a carrying device (300); at least one ray source (100) each includes a separate housing (110) to define a vacuum space and target spots enclosed within the housing (110), and a detector assembly (200). The at least one ray source (100) is rotatable between a plurality of scanning positions around a rotation axis relative to the carrying device (300). The at least one ray source (100) and the detector assembly (200) may be lifted or lowered along the rotation axis relative to the carrying device (300). When the at least one ray source (100) is located at one of scanning positions relative to the carrying device (300), the at least one ray source (100) and the detector assembly (200) are lifted or lowered along the rotation axis relative to the carrying device (300) and the at least one ray source (100) emits X-rays.

Abstract: An electrical connector includes: an insulative housing having a row of slots defined by plural dividing walls thereof, and plural contacts secured in the insulative housing and each including a securing portion, a front contacting portion disposed in a corresponding slot, and a rear tail, wherein the plurality of dividing walls includes a group of first dividing walls each having a first length and a group of second dividing walls each having a second length along a front-to-back direction, and the first length is shorter than the second length to expose to air a larger extent of the front contacting portions of associated contacts disposed in the slots defined by the group of first dividing walls with respect to the front contacting portions of associated contacts disposed in the slots defined by the group of second dividing walls.