Abstract: The present disclosure provides a preparation method of a composite current collector for a zinc secondary battery, a negative electrode plate, and a zinc secondary battery. The preparation method of the composite current collector for the zinc secondary battery comprises: 1) disposing a layer of carbon cloth between two layers of zinc mesh, thermally pressing the two layers of zinc mesh with the carbon cloth, and rolling the two layers of zinc mesh with the carbon cloth to obtain a pressed zinc mesh; 2) soaking the pressed zinc mesh in a graphene dispersion, then taking out and drying the pressed zinc mesh after soaking; and 3) coating two surfaces of the dried pressed zinc mesh with a conductive paste and drying to obtain the composite current collector for the zinc secondary battery.

Abstract: An accessory device (10) and a drying assembly (100) are provided. The accessory device (10) is installed in the drying apparatus (20) and the drying apparatus (20) is capable of emitting airflow and infrared radiation, and the accessory device (10) comprises a mounting portion (11), an airflow portion (12) and a guide component (13), the mounting portion (11) is configured for mounting to the drying apparatus, and the airflow portion (12) comprises an air inlet. The guide chamber (121) and the air outlet form a hollow portion between the airflow portion (12) and the mounting portion (11), and the guide component (13) is configured in the guide chamber (121), wherein the mounting portion (11) and the airflow portion (12) are connected to each other by a first connector (141).

Abstract: A drying apparatus (10) comprises a housing (11), the housing (11) comprising a first air inlet (111), a second air inlet (112) and an air outlet (116) that are independent of each other, and the housing (11) is configured with a primary airflow channel, an auxiliary airflow channel, an airflow generating element (12) and a radiation element (13). An upstream of the primary airflow channel communicates with the first air inlet (111), and its downstream communicates with the air outlet (116); an upstream of the auxiliary airflow channel communicates with the first air inlet (111) and the second air inlet (112), and its downstream communicates with the primary airflow channel; the airflow generating element (12) is within the primary airflow channel and is configured to generate an airflow; and the radiation element (13) is at least partially within the auxiliary airflow channel and configured to generate infrared radiation.

Abstract: Provided are a construction method and a sequencing method for a single-cell transcriptome sequencing library and a test kit for preparing a single-cell transcriptome library. In the method, a single-cell suspension is subjected to in-situ reverse transcription in a cell or a cell nucleus, the cell or the cell nucleus, together with a magnetic bead, is overloaded into a droplet for a droplet PCR reaction, and then the magnetic bead is recovered and subjected to secondary amplification, fragmentation and library construction, such that the single-cell transcriptome sequencing library is obtained. According to the method, overloading of the cell or cell nucleus subjected to the in-situ reverse transcription together with the pretreated magnetic bead is achieved, an ultra-high throughput of 100,000 cells in a single experiment is obtained, and quite high accuracy is exhibited.

Abstract: An aircraft includes one or more processors individually or collectively configured to determine a current location of the aircraft, determine whether the aircraft is at a first region or a second region based on the current location of the aircraft, and control the aircraft to follow a first flight rule in response to the aircraft being at the first region and follow a second flight rule in response to the aircraft being at the second region, the first flight rule being different from the second flight rule. The first region and the second region are within different jurisdictions.

Abstract: The composite diaphragm for a zinc secondary battery, including: a base diaphragm and a conductive film for the zinc secondary battery, the conductive film being connected to one end of the base diaphragm. The conductive film includes a porous polymer film, and pores of the porous polymer film are filled with conductive compositions, the conductive compositions including 1-10 parts by weight of a conductive agent and 0.1-1 part by weight of an additive. The conductive agent includes at least one of graphite, conductive carbon black, acetylene black, or a graphene carbon nanotube; and the additive includes at least one of a tin powder, a tin dioxide powder, a bismuth powder, a bismuth oxide powder, an indium powder, an indium oxide powder, a lead powder, a lead oxide powder, a cadmium powder, or a cadmium oxide powder.

Abstract: The present disclosure discloses mounting seat (12) and drying apparatus (10), the drying apparatus (10) having an airflow channel (13) and one or more one or more radiation sources (15). The mounting seat (12) comprises a mounting portion (121) and a hollow portion (122), the mounting portion (121) being available for mounting of the one or more radiation sources (15); and in any of the perpendiculars of the mounting seat (12) to the first axis (m) in section, the hollow portion (122) extends from a first edge (123) of the mounting seat (12) to a second edge (124).

Abstract: A flight control apparatus includes one or more memories individually or collectively storing computer program instructions, and one or more processors individually or collectively configured to execute the computer program instructions to: obtain a location of a movable object, obtain a location of a flight restriction zone, and control the movable object to take one or more flight response measures based on the location of the movable object and the location of the flight restriction zone. The flight restriction zone includes a flight restriction strip defined by an area encompassed by a first circle, a second circle, and one or more lines connected to the first circle and the second circle.

Abstract: A method for managing a storage cabinet is provided. The method includes: acquiring face information of a user in response to the user approaching the storage cabinet, and determining feature information of the user according to the face information; acquiring a plurality of sets of image data in response to an operation of opening the storage cabinet by the user, a set of image data in the plurality of sets of image data including multiple frames of image data obtained by taking photographs of an exit location of the storage cabinet from different directions at a same time; determining change information of items in the storage cabinet according to the plurality of sets of image data; and outputting multimedia data related to at least one of the feature information or the items according to the feature information and the change information in the storage cabinet.

Abstract: The disclosure discloses a fusion albumin nanoparticle and application thereof, and belongs to the technical field of biomedicine. In the disclosure, fusion albumin is expressed by using a genetic engineering technology, and the fusion albumin nanoparticle is formed by performing self-assembly and drug loading on the fusion albumin in a neutral aqueous solution. The fusion albumin studied in the disclosure has targetability, pH and enzyme-sensitive functional groups, the nanoparticle prepared by using the fusion albumin has the functions of targetability and controlled drug release, and a method for preparing the fusion albumin nanoparticle is simple and easy to implement and has great application potential.

Abstract: Techniques are disclosed for collaborative map construction using multiple vehicles. Such a system may include a ground vehicle including a first computing device and a first scanning sensor, and an aerial vehicle including a second computing device and a second scanning sensor. The ground vehicle can obtain a first real-time map based on first scanning data using the first scanning sensor, and transmit a first real-time map and position information to the aerial vehicle. The aerial vehicle can receive the first real-time map and the position information from the first computing device, obtain a second real-time map based on second scanning data collected using the second scanning sensor, and obtain a third real-time map based on the first real-time map and the second real-time map.

Abstract: Functional component, forming method thereof and electronic device are provided. The functional component includes a packaging substrate and a connecting wire. The packaging substrate includes a through-hole wire-bonding area including a first insulating layer and a wire-bonding electrode sequentially formed on the substrate. The first insulating layer includes a first through hole, and the wire-bonding electrode covers the first through hole. In an area corresponding to the first through hole, the packaging substrate has wire-bonding bump electrodes on a side of the wire-bonding electrode away from the first insulating layer. The connecting wire includes a wire-bonding connection portion and a wire-bonding extension portion connected to the wire-bonding connection portion. The wire-bonding connection portion is fixedly connected to the wire-bonding electrode. The wire-bonding connection portion extends to cover at least a partial area of a side of at least one of the wire-bonding bump electrodes.

Abstract: An aerial vehicle landing method includes controlling to decelerate, with aid of one or more processors and in response to at least two of a plurality of conditions being satisfied, the aerial vehicle to cause the aerial vehicle to land autonomously. The plurality of conditions includes determining that an external signal related to a human is detected via one or more sensors; determining that a location/orientation change of the aerial vehicle is detected while the aerial vehicle is airborne; and determining that an external contact from an external object is exerted upon the aerial vehicle, the external object being an object that is not part of the aerial vehicle.

Abstract: A movable object includes one or more processors individually or collectively configured to assess a location of the movable object, calculate a distance between the movable object and a restricted region using the location of the movable object, assess whether the distance falls within a first distance threshold, and instruct the movable object to take a movement response measure selected from (1) a first movement response measure when the distance falls within the first distance threshold, and (2) a second movement response measure different from the first movement response measure when the distance falls outside the first distance threshold. The first movement response measure is related to a current movement status of the movable object.

Abstract: A method for controlling an unmanned aerial vehicle (UAV) includes determining whether the UAV is within a first flight restriction zone or a second flight restriction zone and effecting a restriction on the UAV in accordance with a result of the determination, including prohibiting the UAV from flying in response to determining that the UAV is within the first flight restriction zone, or controlling the UAV to fly below a flight ceiling in response to determining that the UAV is within the second flight restriction zone.

Abstract: The present disclosure provides a preparation method of a composite current collector for a zinc secondary battery, a negative electrode plate, and a zinc secondary battery. The preparation method of the composite current collector for the zinc secondary battery comprises: 1) disposing a layer of carbon cloth between two layers of zinc mesh, thermally pressing the two layers of zinc mesh with the carbon cloth, and rolling the two layers of zinc mesh with the carbon cloth to obtain a pressed zinc mesh; 2) soaking the pressed zinc mesh in a graphene dispersion, then taking out and drying the pressed zinc mesh after soaking; and 3) coating two surfaces of the dried pressed zinc mesh with a conductive paste and drying to obtain the composite current collector for the zinc secondary battery.

Abstract: A method includes obtaining, by a vehicle, data from a movable object, generating information for display at the vehicle based at least in part on the data, and causing movement of the vehicle based at least in part on the displayed information. The data is collected by one or more sensors of the movable object. The vehicle is configured to provide one or more services to the movable object.

Abstract: A communications system is disclosed. The communications system includes a first access point and a second access point whose operating channels overlap. The first access point and the second access point each measure a signal strength of a response frame sent by a terminal device associated with the first access point, to obtain a first signal strength and a second signal strength. The first access point determines, based on the first signal strength and the second signal strength, a power, a power upper limit, or a power adjustment value to be used by the second access point when the second access point and the first access point perform concurrent transmission. The communications system can perform a step of measuring the signal strength in the concurrent transmission between the access points, and reduce dependence on the terminal device.

Abstract: A display device includes a display screen and a control circuit. The display screen is configured to display content. The control circuit includes a processor and a memory. The memory is configured to store a program executable by the processor. The processor is configured to read the program in the memory and perform the following steps: in response to a touch instruction generated by at least one user, determining, according to the touch position of the touch instruction, a display position of a first menu bar corresponding to the touch instruction, the display position changing with the movement of the touch position; and displaying the first menu bar corresponding to the touch instruction at the display position.

Abstract: A method for constructing a library of cell-free DNAs in body fluids, comprising directly acting a transposase or an endonuclease on a body fluid sample, fragmenting the cell-free DNAs within, and performing amplification to obtain a library. Also provided is a test kit using the present method for prenatal diagnosis or early detection of cancer.