Abstract: An electronic cigarette atomization core and an electronic cigarette. The electronic cigarette atomization core includes a porous body and a heating body, the porous body includes a liquid absorbing end and an atomization end, the atomization end has an end surface facing away from the liquid absorbing end, and the heating body is arranged on the end surface. An atomization surface includes a first atomization region, the first atomization region is located on the end surface, the first atomization region is a region in which a temperature can reach a predetermined atomization temperature range by means of heating of the heating body, and a ratio of an area of the first atomization region to an area of the end surface ranges from 0.05 to 0.90.

Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.

Abstract: Methods and structures of a three-dimensional memory device are disclosed. In an example, the disclosed method comprises forming a plurality of dielectric stacks stacked on one another over a substrate to create a multiple-stack staircase structure. Each one of the plurality of dielectric stacks comprises a plurality of dielectric pairs arranged along a direction perpendicular to a top surface of the substrate. The method further comprises forming a filling structure that surrounds the multiple-stack staircase structure, forming a semiconductor channel extending through the multiple-staircase structure, wherein the semiconductor channel comprises unaligned sidewall surfaces, and forming a supporting pillar extending through at least one of the multiple-staircase structure and the filling structure, wherein the supporting pillar comprises aligned sidewall surfaces.

Abstract: This application provide a data management method for a blockchain system, a medium, and an electronic device. The system includes an accounting node sub-network and a service node sub-network. The method includes: adding, after an accounting node generates a first data block, first key information used for verifying a block header of a second data block generated after the first data block to a block header of the first data block; generating a signature corresponding to the first data block, and adding the signature corresponding to the first data block to the block header of the first data block; and releasing the block header of the first data block to the service node sub-network, to cause a service node to verify the signature included in the block header of the first data block, and obtaining the first key information after a successful verification to verify the block header of the second data block.

Abstract: An electronic cigarette vaporization core and an electronic cigarette, the electronic cigarette vaporization core includes a porous body and a heating body. The porous body includes a liquid absorbing end and a vaporization end, a bump is arranged on the vaporization end, and the bump includes an end surface facing away from the porous body and a side surface located on an outer periphery of the bump. The heating body is arranged on the end surface, and a distance between at least a part of the heating body and an edge of the end surface is less than a predetermined value, so that both at least a part of the end surface and at least a part of the side surface form vaporization surfaces. Therefore, when the vaporization surface formed on the bump is fully used, utilization efficiency of heat energy of the heating body can be ensured on the basis of improving a heating speed of the heating body.

Abstract: This application describes a medical image classification method, a model training method, and a server. The medical image classification method includes: obtaining, by a device, a medical image data set. The device includes a memory storing instructions and a processor in communication with the memory. The method includes performing, by the device, quality analysis on the medical image data set, to extract feature information of a medical image in the medical image data set; and classifying, by the device, the medical image data set based on the feature information and by using a pre-trained deep learning network for performing anomaly detection and classification, to obtain a classification result.

Abstract: A reconfigurable optical add and drop multiplexer (ROADM) system is provided. The ROADM system may include a switching system which includes at least one first WSS optically coupled to a tapping coupler and configured to receive an input optical signal from a first circulator, transmit a drop optical signal to a demultiplexer to drop one or more first wavelength channels, and output a through optical signal. The switching system may also include at least one second WSS optically coupled to the at least one first WSS and a multiplexer and configured to receive an add optical signal to add one or more second wavelength channels, receive the through optical signal, and output an output optical signal to a second circulator, and at least one OCM configured to monitor the input optical signal and the output optical signal.

Abstract: An integrated device for rapid detection of SARS-CoV-2 is disclosed. The integrated device includes a front-end system, a back-end system, and a microfluidic channel. The front-end system includes a detection region and a control region. The detection region and the control region have similar structures, each including an interdigital electrode and a graphene film. The microfluidic channel is arranged to cover the detection region so as to allow the interdigital electrode of the detection region to be exposed to the breath sample. The graphene film of the detection region has a surface resistance higher than that of the graphene film of the control region when the detection region is exposed to a selected virus. The back-end system is configured to detect and compare the surface resistance of the graphene films of the detection region and the control region for determining whether the selected virus is present in the breath sample.

Abstract: A method for evaluating a damage power of confined explosion, includes: determining a size of a confined case and a thickness of a target plate according to a requirement of evaluation on damage effectiveness of a warhead to establish an explosive damage effectiveness evaluation platform; calibrating parameters of the platform with a series of confined explosion tests of trinitrotoluene (TNT) bare charges in the case to form a relational map, in which a deflection of a mid-point of the target plate changes with a charge mass; obtaining a deflection of the mid-point of the target plate by detonating different warheads, forming different detonation atmosphere and forming different venting configuration in the case, and performing interpolation through the map to obtain an equivalent bare charge as an evaluation index. The method quantitatively evaluates the damage effectiveness of the warhead, and is not limited by the damage component.

Abstract: A method for evaluating a damage power of confined explosion, includes: determining a size of a confined case and a thickness of a target plate according to a requirement of evaluation on damage effectiveness of a warhead to establish an explosive damage effectiveness evaluation platform; calibrating parameters of the platform with a series of confined explosion tests of trinitrotoluene (TNT) bare charges in the case to form a relational map, in which a deflection of a mid-point of the target plate changes with a charge mass; obtaining a deflection of the mid-point of the target plate by detonating different warheads, forming different detonation atmosphere and forming different venting configuration in the case, and performing interpolation through the map to obtain an equivalent bare charge as an evaluation index. The method quantitatively evaluates the damage effectiveness of the warhead, and is not limited by the damage component.

Abstract: Authorizing access to a web domain involves a server device receiving, from a browser of a computing device, a request to access a web domain. The server device sends a web page to the browser of the computing device. The web page includes a redirect script that redirects the browser to a particular companion domain of the web domain, wherein the particular companion domain comprises a domain name system (DNS) zone file comprising an ALIAS record for the particular companion domain. The server device sends to the browser an authentication challenge for access to the web domain. The server device receives a Kerberos service ticket from the browser of the computing device. The server device provides the browser with access to the web page.

Abstract: A data communication method, apparatus, and device, a computer-readable storage medium, and a computer program product. The method includes: generating a communication request in response to a trigger operation for a communication control in an embedded subroutine, the communication request being used for requesting to communicate with a target user associated with the embedded subroutine, invoking a communication service plug-in according to the communication request, and communicating with the target user in the embedded subroutine through a first service function provided by the communication service plug-in, and performing, in response to a trigger operation for a second service function provided by the communication service plug-in, service interaction with the target user in the embedded subroutine through the second service function in a process of communicating with the target user.

Abstract: A glass part includes a substrate and a texture reinforcement layer disposed on at least one surface of the substrate. The texture reinforcement layer includes a plurality of reinforcement units. Cross sections of an outer surface of each reinforcement unit in at least a horizontal direction and a vertical direction are in a hyperbolic shape or a parabolic shape.

Abstract: Authorizing access to a web domain involves a server device receiving, from a browser of a computing device, a request to access a web domain. The server device sends a web page to the browser of the computing device. The web page includes a redirect script that redirects the browser to a particular companion domain of the web domain, wherein the particular companion domain comprises a domain name system (DNS) zone file comprising an ALIAS record for the particular companion domain. The server device sends to the browser an authentication challenge for access to the web domain. The server device receives a Kerberos service ticket from the browser of the computing device. The server device provides the browser with access to the web page.

Abstract: A gearshift device is provided. The gearshift device includes a magnetic plate and sensors for sensing the magnetic plate to output a gear signal. The magnetic plate includes M coding regions for distinguishing M gears, and at least two coding regions of the M coding regions share a same region of the magnetic plate. M is a positive integer greater than or equal to 2.

Abstract: A method for preparing titanium dioxide-based synthetic paper capable of degrading organic pollutants, including: adding thermoplastic polyurethane particles and N,N-dimethylformamide or N,N-dimethylacetamide in a reactor, heating, and stirring to fully dissolve the thermoplastic polyurethane particles in a solvent to obtain a polyurethane solution; adding titanium dioxide powder having photocatalytic degradation property in the polyurethane solution, stirring uniformly to obtain a solid-liquid mixture, and standing for defoaming; uniformly coating the solid-liquid mixture onto a piece of release paper, soaking the release paper coated with the solid-liquid mixture into an aqueous solution of sliver nitrate having photocatalytic degradation property, completely curing the solid-liquid mixture to form a film, and soaking the release paper and the film into an aqueous solution of sodium chloride; drying, cooling, removing the release paper, and cutting the film to a proper size to obtain the titanium dioxide-ba

Abstract: A method for preparing active carbon-based special synthetic paper capable of degrading harmful substances in environment, including: stirring polyurethane particles and a solvent in a reactor, and standing to completely dissolve the polyurethane particles to obtain a polyurethane solution; adding active carbon having harmful substances adsorption property in the obtained polyurethane solution, stirring and mixing uniformly to obtain a solid-liquid mixture; coating the obtained solid-liquid mixture onto a piece of release paper, soaking the release paper coated with the solid-liquid mixture into an aqueous solution of silver nitrate having photocatalytic degradation property, completely curing the solid-liquid mixture to form a film, and soaking the release paper and the film into an aqueous solution of sodium chloride; drying the obtained release paper and the film in an electric blast drying oven, and stripping the film from the release paper to obtain the active carbon-based special synthetic paper.

Abstract: A gearshift device is provided. The gearshift device includes a magnetic plate and sensors for sensing the magnetic plate to output a gear signal. The magnetic plate includes M coding regions for distinguishing M gears, and at least two coding regions of the M coding regions share a same region of the magnetic plate. M is a positive integer greater than or equal to 2.

Abstract: A circuit includes: a power generation module a low-frequency motion energy harvesting module, configured to harvest a direct current output by the power generation module when the human body is in a low-frequency motion state; a high-frequency motion energy harvesting module, configured to harvest a direct current output by the power generation module when the human body is in a high-frequency motion state; an energyrespectively connected to the low frequency motion cncrgy harvesting modulo configured to store electrical energy; and a motion switching module, respectively connected to the power generation module, the low-frequency motion energy harvesting module and the high-frequency motion energy harvesting module, and configured to monitor a human body motion state, and control, according to the human body motion state, switching between operation of the low-frequency motion energy harvesting module and operation of the high-frequency motion energy harvesting module, to respectively charge the energy stor