Abstract: A weeding machine and a weeding method for seedlings in a paddy field are disclosed. The weeding machine includes a paddy field power chassis, a lifting hydraulic cylinder, a parallelogram suspension frame, a weeding frame, a transmission assembly, and weeding units. The paddy field power chassis vertically adjusts the working depth of the weeding machine through the parallelogram suspension frame and the lifting hydraulic cylinder. The power is transmitted to the weeding units by the transmission assembly. The weeding units are used for pulling out weeds between rows and feeding the weeds to weed chopping channels. Spiral weed chopping knives are used for chopping the weeds and conveying the weeds to feeding channels. Bidirectional variable-pitch augers are used for conveying the chopped weeds to discharge openings of the feeding channels under pressure and discharging the chopped weeds for burying weeds between plants.

Abstract: The present disclosure provides a method for building a finite element model of corneal endothelial cells, including: importing a standard corneal model into finite element pre-processing software, and generating 2D meshes, to obtain a basic mesh model; importing a detailed geometric model of corneal endothelial cells; determining a complete corneal endothelial cell model according to the basic mesh model and the detailed geometric model; and performing calculation according to the complete corneal endothelial cell model. The present disclosure can improve the efficiency and effect of building a finite element model of corneal endothelial cells.

Abstract: Disclosed are an energy storage cabinet and a method for controlling a temperature of a battery. The energy storage includes a first housing, a battery module, an air supply portion, and an air guide portion. An air inlet plate is provided at one side of the first housing, the air inlet plate is provided with a first through hole communicated with a first accommodating cavity. The battery module is provided in the first accommodation cavity. The air guide portion is provided at a side of the air inlet plate away from the first accommodation cavity. The air guide portion has a first channel provided with a first end and a second end opposite to the first end. The first end is communicated with the first through hole. The high-speed airflow transmitted from the air supply portion flows into the first channel through the second end.

Abstract: A speed control method, including: obtaining a cost map of a moving area and a target path of the mobile device moving in the moving area; based on the cost map, determining a current target distance between the mobile device and an obstacle, and a current turning curvature; determining a target speed of the mobile device based on the current target distance, the current turning curvature, and a maximum limiting speed of the mobile device; and controlling the mobile device to move at the target speed.

Abstract: Provided are a pedestrian search method, a server, and a storage medium. The pedestrian search method is described as follows: a pedestrian detection is performed on each segment of monitoring video to obtain multiple pedestrian tracks, where each pedestrian track of the multiple pedestrian tracks includes multiple video frame images of a same pedestrian; and pedestrian tracks belonging to the same pedestrian is determined according to video frame images in the multiple pedestrian tracks, and the pedestrian tracks of the same pedestrian are merged.

Abstract: A method and apparatus for controlling a liquid-cooled energy storage system are disclosed. A water inlet pressure and a water outlet pressure of a liquid-cooled unit are cyclically acquired, to calculate a difference therebetween in each cycle. A pressure difference change value in the current cycle is calculated according to the difference between the water inlet pressure and the water outlet pressure in a current cycle and the difference between the water inlet pressure and the water outlet pressure in a previous cycle. If the pressure difference change value is less than or equal to a first preset change value, a water pump duty cycle of a water pump is controlled according to corresponding preset temperature control policy, otherwise the water pump duty cycle of the water pump is controlled according to a preset liquid leakage detection policy.

Abstract: A temperature control method, an electronic device and a computer-readable storage medium are disclosed, the temperature state and the temperature change of the battery cluster are judged through the average temperature of the battery cluster and the temperature rising rate of the battery cluster, so that different temperature control strategies are selected; and the heat dissipation efficiency of the heat dissipation module of each battery module is controlled through the average temperature of each battery module in the battery cluster and the average temperature of the corresponding battery cluster, so that the battery cluster is controlled to subjected to temperature rise, temperature reduction, energy saving, temperature stability and the like, meanwhile, the temperature consistency of battery cells in the battery cluster can be improved, and the integral temperature consistency of the battery cluster is further improved.

Abstract: An energy storage battery container system and a method for controlling an energy storage battery container system are disclosed. The system includes a refrigeration assembly and a battery cluster unit. A refrigeration member is communicated with a first pipeline and can input coolant into the first pipeline. A first cooling plate and a second cooling plate are hollow. The first cooling plate can abut against a battery. The second cooling plate can abut against a heat generation component. One end of a second pipeline and one end of a third pipeline are both communicated with the first pipeline. The first cooling plate is communicated with the second pipeline and the third pipeline. Two ends of a fourth pipeline are both communicated with the third pipeline, and the second cooling plate is communicated with the fourth pipeline.

Abstract: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.

Abstract: The invention discloses a powder leakage monitoring device and a powder leakage monitoring method. The powder leakage monitoring device comprises light field camera, 3D PTZ (3-Dimensional Pan/Tilt/Zoom) and computer. Wherein, the light field camera records original light field images of monitored area; the 3D PTZ under the light field camera adjusts the shooting angle of the light field camera when it rotates according to the set direction; and the computer respectively connects to the light field camera and the 3D PTZ, which generates refocused images corresponding to the original light field images, and determines the spatial coordinates of the powder leakage point and the hazard range of the powder leakage in the monitored area according to the refocused images and the shooting angle. Therefore, the range and accuracy of powder leakage monitoring are both increased by using this invention.

Abstract: A following control method for a robot includes: controlling the robot to follow a target object; in a process of following the target object, acquiring a relative pose relationship between the target object and the robot; and adjusting a visual field range of the robot according to the relative pose relationship and visual field parameter information of the robot, in which the target object is located in the adjusted visual field range. A relative angle with a visual field center line may be used to adjust a visual field range. An electronic device for controlling the robot is also disclosed.

Abstract: A method of making a magnetically-drivable microrobot that is suitable for carrying and delivering cells includes photo-curing a photo-curable material composition to form a body of the magnetically-drivable microrobot. The photo-curable material composition includes a degradable component, a structural component, a magnetic component, and a photo-curing facilitation composition including a photoinitiator component and a photosensitizer component.

Abstract: The present disclosure provides a pedestrian tracking method and device, and a computer-readable storage medium, and relates to the field of communication technology. The pedestrian tracking method includes: performing pedestrian trajectory analysis on video pictures acquired by preset surveillance cameras to generate a pedestrian trajectory picture set (S110); performing multi-modal feature extraction on the pedestrian trajectory picture set, and forming a pedestrian multi-modal database (S120); and inputting the pedestrian multi-modal database to a trained multi-modal identification system, and performing pedestrian tracking to generate a movement trajectory of a pedestrian in the preset surveillance cameras (S130).

Abstract: A laser transmit module includes a capacitor, a laser transmitter, and a field effect transistor. The capacitor is configured to supply power to the laser transmitter. The field effect transistor is configured to control the laser transmitter to be turned on. The capacitor, the laser transmitter, and the field effect transistor are interconnected through conductive pins to form a laser transmission loop. Loop inductance generated by the laser transmission loop affects a pulse peak value of a laser pulse transmitted by the laser transmitter, thereby affecting a detection distance of the laser pulse. Therefore, the laser transmission loop is formed through a direct connection between the conductive pins of the capacitor, the laser transmitter, and the field effect transistor, to reduce distances between the components and reduce an area of the formed laser transmission loop, so as to increase the detection distance of the laser transmit module.

Abstract: One embodiment provides a method for controlling a microagent in a workspace. The method includes providing a plurality of magnetic sources and generating a rotating gradient magnetic field by activating the plurality of magnetic sources differently such that a driving force is created to drive the microagent towards an aggregation center in the workspace.

Abstract: One embodiment provides a method for controlling a microagent in a workspace. The method includes providing a plurality of magnetic sources and generating a rotating gradient magnetic field by activating the plurality of magnetic sources differently such that a driving force is created to drive the microagent towards an aggregation center in the workspace.

Abstract: An electromagnetic device for manipulating a magnetic-responsive robotic device, and an electromagnetic apparatus incorporate one or more such electromagnetic device. The electromagnetic device includes a magnetic core 200 having a first portion and a second portion extends from one side of the first portion. The first portion has a first cross section and defining a first central axis. The second portion has a second cross section smaller than the first cross section, and defines a second central axis parallel to the first central axis. A first electromagnetic coil is arranged around the first cylindrical portion. A second electromagnetic coil is arranged around the second cylindrical portion.

Abstract: The invention discloses a powder leakage monitoring device and a powder leakage monitoring method. The powder leakage monitoring device comprises a light field camera, a 3D PTZ and a computer. Wherein, the light field camera records the original light field images of the monitored area; the 3D PTZ under the light field camera adjusts the shooting angle of the light field camera when it rotates according to the set direction; and the computer respectively connects to the light field camera and the 3D PTZ, which generates refocused images corresponding to the original light field images, and determines the spatial coordinates of the powder leakage point and the hazard range of the powder leakage in the monitored area according to the refocused images and the shooting angle. Therefore, the range and accuracy of powder leakage monitoring are both increased by using this invention.

Abstract: A weeding machine and a weeding method for seedlings in a paddy field are disclosed. The weeding machine includes a paddy field power chassis, a lifting hydraulic cylinder, a parallelogram suspension frame, a weeding frame, a transmission assembly, and weeding units. The paddy field power chassis vertically adjusts the working depth of the weeding machine through the parallelogram suspension frame and the lifting hydraulic cylinder. The power is transmitted to the weeding units by the transmission assembly. The weeding units are used for pulling out weeds between rows and feeding the weeds to weed chopping channels. Spiral weed chopping knives are used for chopping the weeds and conveying the weeds to feeding channels. Bidirectional variable-pitch augers are used for conveying the chopped weeds to discharge openings of the feeding channels under pressure and discharging the chopped weeds for burying weeds between plants.

Abstract: Provided are a pedestrian search method, a server, and a storage medium. The pedestrian search method is described as follows: a pedestrian detection is performed on each segment of monitoring video to obtain multiple pedestrian tracks, where each pedestrian track of the multiple pedestrian tracks includes multiple video frame images of a same pedestrian; and pedestrian tracks belonging to the same pedestrian is determined according to video frame images in the multiple pedestrian tracks, and the pedestrian tracks of the same pedestrian are merged.