Abstract: A phase shifter assembly, suitable for a base station antenna, includes a main printed circuit board with opposing first and second primary sides. The main printed circuit board has a plurality of radio frequency (RF) transmission paths on the first primary side and a plurality of RF transmission paths on the second primary side. The phase shifter assembly also includes a first wiper arm rotatably coupled to the main printed circuit board and electrically coupled to the plurality of transmission paths on the first primary side of the main printed circuit board; and a second wiper arm rotatably coupled to the main printed circuit board and electrically coupled to the plurality of transmission paths on the second primary side of the main printed circuit board. Rearwardly extending phase shifter assemblies that are oriented perpendicular to a plane defined by a reflector within a base station antenna are also provided.

Abstract: The invention relates to the technical field of agricultural planting, in particular to a controlled-release bacterial fertilizer for peanuts and a preparation method of the special controlled-release bacterial fertilizer. The special controlled-release bacterial fertilizer is composed of an inner layer and an outer layer; after the outer layer is released completely, the inner-layer network structure gradually absorbs water and preserves moisture, and has good slow release and controlled release properties, thereby achieving the gradual release of the inner layer, high fertilizer utilization rate, exerting the efficacy of the microbial agent and facilitating the large-area promotion.

Abstract: The present disclosure provides a self-learning collaborative control method for active steering and yaw moment for a motor vehicle, including a first step of constructing fundamental formulas which are stored in a vehicle ECU, and a second step of calculating an active steering angle ?C and a yaw moment Mc on line by the vehicle ECU according to following sub-steps during a driving process of the motor vehicle, and controlling a driving state of the motor vehicle according to ?C and Mc. The second step includes a first sub-step of collecting raw real-time parameter values, a second sub-step of performing calculation by the identifier and the control target reference model, a third sub-step of calculating ?C and Mc. The present disclosure can realize the self-learning collaborative control of active steering and yaw moment without requiring a system control model and correct a driver's steering operation.

Abstract: Described herein is a supported organotin catalyst and a preparation method for a sucrose-6-carboxylate. The supported organotin catalyst is prepared by coupling an organotin functional group to an inorganic carrier. The supported organotin catalyst of the present application can be used for catalyzing the generation of a sucrose-6-carboxylate, and after reaction, the supported organotin catalyst can be directly filtered and recovered only by adding a small amount of water to quench an acylating agent, so that the subsequent dehydration process is simpler and easier, and the supported organotin catalyst is thus very economical in terms of manpower, equipment and energy.

Abstract: The present disclosure provides a high-throughput sequencing (HTS) kit of a human mitochondrial whole genome based on direct amplification of a fusion primer, including a library preparation kit, a sequencing template preparation kit, and a sequencing kit; where the library preparation kit includes a multiplex PCR primer pool tagged with different sample tags, a DNA extraction-free PCR amplification enzyme, a PCR reaction buffer, a 2800 control DNA, and a DNA purification magnetic bead. In the present disclosure, the kit for HTS of human mitochondrial genome by direct amplification with fusion primer has a low detection cost and a convenient operation.

Abstract: The present disclosure relates to a special lamp cap which includes a lamp holder, a lamp holder female plug, a lamp bulb male plug, a lamp bulb shell and a nut. The lamp holder female plug is fixedly connected with the lamp holder. The lamp bulb male plug is detachably and fixedly connected with the lamp holder female plug. One end of the lamp bulb male plug extends into the interior of the lamp holder female plug. The lamp bulb shell is internally provided with a luminous body. The lamp bulb shell is fixedly connected with the lamp bulb male plug. The nut is detachably and fixedly connected with the lamp holder female plug. The nut sleeves the outside of the lamp holder female plug.

Abstract: A heterojunction solar cell and a manufacturing method thereof are provided. The manufacturing method includes the following steps: A: forming a tunnel oxide layer on a surface of a semiconductor substrate; B: forming an N-type polysilicon layer on the tunnel oxide layer; C: forming a mask layer on the N-type polysilicon layer of a first main surface of the semiconductor substrate; D: performing texturing and cleaning on a second main surface of the semiconductor substrate, and removing the mask layer; E: forming a second intrinsic amorphous silicon layer on the second main surface of the semiconductor substrate; and F: forming a P-type oxygen-doped microcrystalline silicon layer on the second intrinsic amorphous silicon layer.

Abstract: A heterojunction solar cell and a manufacturing method thereof are provided. The manufacturing method includes the following steps: A: forming a tunnel oxide layer on a first main surface of a semiconductor substrate; B: forming a first intrinsic polysilicon layer on the tunnel oxide layer; C: forming the first intrinsic polysilicon layer into a P-type polysilicon layer by diffusion annealing; D: removing a borosilicate glass (BSG) layer formed by the diffusion annealing; E: forming a mask layer on the P-type polysilicon layer; F: performing texturing and cleaning on a second main surface of the semiconductor substrate, and removing the mask layer; G: forming a second intrinsic amorphous silicon layer on the second main surface of the semiconductor substrate; and H: forming an N-type oxygen-doped microcrystalline silicon layer on the second intrinsic amorphous silicon layer.

Abstract: The present disclosure relates to novel crystalline forms of ozanimod and preparation method thereof. The provided crystalline forms of ozanimod comprise crystalline form CS9, crystalline form CS10 and crystalline form CS11, and can be used for treating autoimmune diseases, particularly used for preparing drugs for treating multiple sclerosis and ulcerative colitis. The crystalline forms of the present disclosure have one or more advantages in solubility, stability, hygroscopicity and processability and provide new and better choices for the preparation of ozanimod drug product, and are very valuable for drug development.

Abstract: Embodiments of the present disclosure provides a method and a system for image quality assessment. The method may include obtaining a first image of a target video, wherein the first image may be determined based on a target video frame in the target video; and determining a target image quality of the target video frame based on at least one of a first parameter and a second parameter of the first image, wherein, the first parameter may be determined based on an effective region in the first image, the second parameter may be determined based on a first similarity parameter between the first image and a second image, and the second image may be determined based on a video frame other than the target video frame in the target video.

Abstract: Provided is a mono-tin organic compound for the synthesis of sucrose-6-carboxylate. The compound has a structure shown in formula (1), wherein R1, R2, and R3 each are independently selected from the group consisting of C1 to C8 linear or branched saturated alkyl, C2 to C8 linear or branched unsaturated alkyl, C3 to C8 substituted or unsubstituted saturated cycloalkyl, C3 to C8 substituted or unsubstituted unsaturated cycloalkyl, and C6 to C12 aryl or substituted aryl; and R4 is selected from the group consisting of C1 to C6 linear or branched saturated alkyl and C6 to C12 aryl or substituted aryl.

Abstract: Provided are a supported catalyst and a method for synthesizing a sucrose-6-ester. The supported catalyst includes an active functional component and an inorganic carrier, wherein the active functional component is a compound shown in formula (1), wherein n is a natural number greater than or equal to 2; R is an atom linked to a surface of the inorganic carrier; and one or two of R1, R2, and R3 is/are hydrocarbyl, and the rest are independently any one selected from the group consisting of oxygen, hydroxyl, hydrocarbyloxy, and acetoxy.

Abstract: Disclosed are a method for controlling a heating water heater, a heating water heater, and a computer-readable storage medium. The method includes: controlling the heating outlet to be closed and the heat supply outlet to be opened after receiving a bath water signal; obtaining a water temperature of a bath outlet; obtaining a duration that the water temperature at the bath outlet is within a preset water temperature range; controlling an opening degree of the heat supply outlet to decrease and an opening degree of the heating outlet to increase when the duration is greater than or equal to a first preset duration, and a heat load of the heating water heater is less than a rated load; and controlling the heat load of the heating water heater to increase, and maintaining the water temperature at the bath outlet within the preset water temperature range.

Abstract: Embodiments of this application disclose an antenna calibration method and system. The system includes a baseband processing unit, a remote radio unit, an antenna array, and a coupled antenna. The antenna array sends a radio frequency calibration signal sent by the baseband processing unit, or receive the radio frequency calibration signal. The remote radio unit provides a plurality of transmission channels, where the plurality of transmission channels correspond to a plurality of transmission ports. The coupled antenna receives the radio frequency calibration signal sent by the baseband processing unit, and transmit a coupled signal corresponding to the radio frequency calibration signal to the baseband processing unit, or send the radio frequency calibration signal. The baseband processing unit calibrates, based on a difference between the radio frequency calibration signal and the coupled signal, a plurality of to-be-sent baseband signals corresponding to the plurality of transmission channels.

Abstract: Provided is a method for preparing a sucrose-6-ester, including: preparing a reaction solution of sucrose and an organo-tin compound; atomizing the reaction solution to form droplets; thoroughly mixing and contacting the droplets with a gasified dehydration medium such that the droplets undergo a dehydration reaction to obtain an intermediate mixture containing sucrose organic tin ester droplets; separating the intermediate mixture to obtain a sucrose organic tin ester solution and a dehydrated gas-liquid mixture; recovering the sucrose organic tin ester solution obtained in the separation step and cycling to the atomization and dehydration steps several times; and subjecting an organic acid anhydride to an acylation reaction with the sucrose organic tin ester solution to obtain the sucrose-6-ester.

Abstract: Provided is a post-treatment method for a sucrose-6-carboxylate chlorination reaction solution, including: adding ammonia water or water to the sucrose-6-carboxylate chlorination reaction solution to obtain a mixture, and subjecting the mixture to preliminary neutralization reaction; introducing an ammonia gas into a resulting reaction solution at a predetermined temperature, adjusting a pH of the resulting reaction solution to a predetermined alkalinity range, and conducting a reaction at a reaction temperature for a period of time; and adjusting a pH of a reaction solution obtained after the ammonia gas neutralization using an acid to a predetermined acidity range.