Abstract: Base station antennas include an externally accessible active antenna module releasably coupled to a rear of the housing using a field installable mounting system/kit with a mounting frame and active antenna module mounting brackets. The base station antenna housing has a passive antenna assembly that cooperates with the active antenna module.

Abstract: The utility model relates to a shield, which is used to wrap at least a part of a cable connector. The shield has a hollow shield body made of elastic material. The shield body surrounds a through-hole for receiving the cable connector and is provided with: multiple circumferential ribs, which are spaced apart from each other in the axial direction and protrude outward in the radial direction; and at least one axial rib, which protrudes outward in the radial direction. The shield of the present utility model can reduce the risk of collapse in the axial direction during the process of installing the shield onto the cable's cable connection portion, thereby improving the installation efficiency. Additionally, the shield according to the present utility model allows for a smaller wall thickness, which helps to reduce manufacturing costs. The present utility model also relates to a connector assembly including the above-mentioned shield.

Abstract: A microbial protectant in a high-nutrient and high-activity chemical fertilizer-biological compound fertilizer and a preparation method thereof are related, belonging to the technical field of biological extracts. The microbial protectant mainly includes alginate oligosaccharide and tetrahydropyrimidine, with the other ingredients further including at least one of burdock oligosaccharide, chitosan oligosaccharide, amino acid, vegetable oil, fumaric acid, and citric acid. The microbial protectant can protect microorganisms from injury and death in extreme environments, such as a high-salt environment, has broad application prospects, and may be applied to the preparation of a high-activity microbial agent and the preparation of a high-nutrient chemical fertilizer-biological compound fertilizer.

Abstract: A high-nutrient and high-activity chemical fertilizer-biological compound fertilizer, and a preparation method and application thereof are provided. The high-nutrient and high-activity chemical fertilizer-biological compound fertilizer includes an inorganic chemical fertilizer and a microbial agent. The chemical fertilizer-biological compound fertilizer has nutrient contents of nitrogen, phosphorus, and potassium of greater than 40% and a viable number of microorganisms of 200 million cfu/g or more. The chemical fertilizer-biological compound fertilizer further includes a microbial protectant, and a mass ratio of the microbial protectant to the microbial agent is ?1.

Abstract: A method for forming a hole transport layer on a surface of a substrate includes providing M target materials comprising inorganic hole transport materials and forming the hole transport layer on the surface of the substrate using magnetron sputtering. The hold transport layer at least comprises N consecutive sub-layers. M and N are integers and 2?N?M. One of the M target materials is a doped target material further comprising a doping material.

Abstract: A segmental precast composite-material composite-slab composite beam and a construction method thereof are provided, relating to the technical field of bridge design and construction. The segmental precast composite-material composite-slab composite beam mainly includes a segmental precast orthotropic composite top slab, a web, a bottom slab, and a wet joint between segments. The orthotropic composite top slab is composed of an orthotropic slab and an ultra-high-performance concrete layer (UHPC), and the interface connection of the orthotropic slab and the UHPC structural layer is achieved by a shear key. The UHPC structural layer is superposed with the orthotropic slab in segments in a precast plant to form a composite-slab composite beam segment to be entirely transported, hoisted and assembled, and the connection of the UHPC structural layers between the segments is achieved by casting a transverse wet joint in place.

Abstract: A perovskite solar cell and a preparation method therefor, and a power consuming device. The perovskite solar cell comprises a bottom electrode, a perovskite layer and a top electrode, wherein the perovskite layer comprises several layers of sub-perovskite films arranged in stack, and the band gaps of two adjacent layers of the sub-perovskite films are different.

Abstract: The present application is directed to an assembly for mounting one or more remote radio units to a mounting structure. The assembly includes an upper mounting bracket assembly and a lower mounting bracket assembly. The upper mounting bracket assembly includes a first main support member coupled to a first clamp assembly, the first clamp assembly configured to be secured to the mounting structure, and a pair of upper hanger plates, each upper hanger plate being configured to engage and be secured to the first main support member. The lower mounting bracket assembly includes a second main support member coupled to a second clamp assembly, the second clamp assembly configured to be secured to the mounting structure a distance from the first clamp assembly, and a pair of lower hanger plates, each lower hanger plate being configured to engage and be secured to the second main support member.

Abstract: A behavior wallpaper unlocking method includes sending a first message to at least one second electronic device, where the first message is used to request the at least one second electronic device to unlock a target behavior wallpaper, the first message includes K task items, and each task item is corresponding to a part of wallpaper in the target behavior wallpaper; unlocking the target behavior wallpaper based on K target results sent by M second electronic devices; and applying the target behavior wallpaper to the first electronic device, where the M second electronic devices are devices in the at least one second electronic device, each target result is a result of one task item executed by one second electronic device in the M second electronic devices, K and M are positive integers, and M is less than or equal to K.

Abstract: A text display method and a text display apparatus, and pertains to the field of communication technologies. The method includes: in a case that a text edit interface is displayed, receiving a first input, where the first input is used to input a target character; determining a target display parameter corresponding to the target character according to the target character; and displaying target text content according to the target display parameter, where the target text content is text content input after the target character is received, or text content selected before the target character is received.

Abstract: Provided are an ionic compound and an application thereof, a perovskite precursor solution, a perovskite material, a solar material, a solar cell, and an electric apparatus. The ionic compound has a structure represented by any one of formulas (1) to (3). The ionic compound can improve the stability of perovskite materials and thus improve the efficiency and stability of solar cells.

Abstract: A base station antenna includes a reflector assembly having at least first through third panels that are angled with respect to each other, first and second feed board PCBs that are mounted outwardly of the respective first panels of the reflector assembly, the first and second feed board PCBs including respective first and second RF transmission lines, and a feed line PCB having a third RF transmission line that connects directly to the first RF transmission line via a first tab-through-PCB connection and a fourth RF transmission line that connects directly to the second RF transmission line via a second tab-through-PCB connection.

Abstract: Base station antennas include an externally accessible active antenna module releasably coupled to a rear of the housing using a field installable mounting system/kit with a mounting frame and active antenna module mounting brackets. The base station antenna housing has a passive antenna assembly that cooperates with the active antenna module.

Abstract: A solar cell includes a plurality of sub-cells. The plurality of sub-cells are disposed sequentially along a first direction. The plurality of sub-cells each include a first photovoltaic conversion layer for performing photovoltaic conversion. The first direction is perpendicular to a thickness direction of the sub-cells. Along the first direction, a trend of change in a thickness of the first photovoltaic conversion layer of each sub-cell is negatively correlated to a trend of change in a cross-sectional area, perpendicular to the thickness direction, of each first photovoltaic conversion layer, so as to improve uniformity of photocurrents output by the sub-cells and uniformity of electrical current.

Abstract: Embodiments of the present application provide a battery production system and a battery production method. The battery production system includes: a preheating apparatus, including a preheating cavity, a first delivery mechanism being arranged in the preheating cavity, and the preheating cavity having a first charging door and a first discharging door; and a baking apparatus, including a baking cavity, the baking cavity having a second charging door and a second discharging door, wherein the first delivery mechanism is configured to deliver a battery piece in the preheating cavity to the baking cavity through the first discharging door and the second charging door when the first discharging door and the second charging door are opposite and are both opened.

Abstract: A spiral ultrasonic tomography imaging method and system are provided. The method is to use synchronous rotation of an ultrasonic probe or cyclic switching of emission array elements in the ultrasonic probe under the premise of a uniform displacement of the ultrasonic probe along the Z axis, so that the change trajectory of the positions of emission array elements over time in a three-dimensional space at each ultrasonic emission time is distributed along a spiral line or a curve. During the process of the uniform displacement of the ultrasonic probe along the Z axis, the ultrasonic probe emits ultrasonic waves and receives and collects echo data. The collected echo data is stored and post-processed to realize ultrasonic tomography imaging of an object. The spiral ultrasonic tomography three-dimensional scanning method and the corresponding system realize rapid continuous uninterrupted data acquisition to ensure that higher spatial resolution in the Z-axis direction.

Abstract: This application relates to a solar cell and a manufacturing method thereof, a photovoltaic module, and an electrical device. The solar cell includes: a plurality of sub-cells, where the plurality of sub-cells are electrically connected to each other; a dead zone, disposed between two adjacent sub-cells; a reflection portion, disposed on at least a part of surfaces of the dead zone, and configured to reflect incident light radiated on the dead zone; a packaging component, disposed on a side of the reflection portion away from the dead zone, and configured to reflect the incident light, which is reflected by the reflection portion, to a surface of the sub-cell to convert the incident light into electrical energy.

Abstract: A display method and apparatus, and pertains to the field of communication technologies. The display method includes: receiving a first input; displaying a first interface of a first application in response to the first input, where the first interface includes object identifier information of at least one object, and the object includes an electronic device or a user; receiving a second input for first object identifier information in the at least one piece of object identifier information; and displaying a first file corresponding to the first object identifier information in response to the second input.

Abstract: The present disclosure has disclosed an antenna mounting device configured to collectively mount a plurality of base station antennas on a mast of a communication tower. The antenna mounting device is substantially in the shape of a polygon, and the mast is disposed at a center of the polygon. The antenna mounting device comprises: a plurality of brackets, which are elongated and include a head bracket, at least one intermediate bracket and a tail bracket attached sequentially; and a bracket fastening mechanism which is disposed between two adjacent ends of the head bracket and an adjacent intermediate bracket, or disposed between two adjacent ends of the adjacent intermediate brackets, or disposed between two adjacent ends of the tail bracket and the adjacent intermediate bracket, and which is configured to move two adjacent ends of the adjacent brackets from a position away from each other to a position close to each other.

Abstract: The invention relates to a cable sealing device comprising: a first plate having a group of first holes and configured to be mounted to a first side of a housing wall; a second plate having a group of second holes and configured to be mounted to a second side of a housing wall; and a soft elastic sealing element configured to be mounted between one of the first and second plates and the housing wall. The group of first holes and the group of second holes and the sealing element are configured to receive a group of cables, and the first and the second plate can be biased toward each other, so that the sealing element can be pressed and elastically deformed. The sealing element can seal and fix the group of cables in the housing wall in a pressed and elastically deformed status. The invention also relates to a cable sealing system comprising a housing wall and the cable sealing device. The cable sealing device is simple in structure and easy to assemble, and can ensure good sealing and fixing of the cables.