Abstract: The present disclosure provides a map information acquisition method and a map acquisition apparatus and a non-transitory computer-readable storage medium. The method comprises: acquiring and constructing, by a map acquisition apparatus, map data, and acquiring, by the map acquisition apparatus, shelf identity information of each of shelves, wherein the shelf identity information is in one-to-one correspondence with the shelves, wherein the map acquisition apparatus comprises: a shopping cart component provided with a map construction system and a radio frequency identification reader; and marking, by the map acquisition apparatus, the map data according to each of the shelf identity information, and generating, by the map acquisition apparatus, map information marked with multiple pieces of shelf identity information.

Abstract: An electrode plate stacking method includes: determining, based on a first electrode plate, a conveying order of a plurality of second electrode plates, the first electrode plate being a continuous electrode plate, the plurality of second electrode plates including at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates being discontinuous electrode plates, and the conveying order being used for conveying the at least one upper electrode plate and the at least one lower electrode plate alternately; generating an identifier sequence for the plurality of second electrode plates based on the conveying order; and collecting first image data of each of the plurality of second electrode plates based on the identifier sequence in a process of conveying the plurality of second electrode plates in the conveying order.

Abstract: A monitoring system based on a digital converter station includes a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side; the monitoring terminal at each level includes a communication module, a human-machine interaction module, a device status monitoring module, a device alarm management module, a video fusion processing module, and a data transmission adjustment and control module.

Abstract: Provided herein are systems and methods for enhancement of polyphenols, such as chlorogenic acids, chicoric acid, anthocyanins, and water-soluble quercetin derivatives, production in red lettuces. Also provided are transgenic lettuce for the production of polyphenols. Also provided are parts of such transgenic lettuces, such as seeds leaves, and extracts. The disclosure also provides methods of using the new lettuces and parts thereof for protection against viral/bacterial infection (i.e., by inhibiting activities of COVID-19 virus/enzymes) diabetes, cardiovascular diseases, memory and eyesight loss, inflammation, and cancer.

Abstract: A sleep-regulating tablet allowing release by stages and a preparation method thereof are provided. The tablet structurally consists of a drug-containing delayed-release tablet core, a drug-free stomach-soluble coating, a drug-free enteric coating, a drug-containing immediate-release shell, and a shell stomach-soluble coating sequentially from inside to outside. An ideal dual-stage timed drug release mode may be realized, and is especially suitable for a sleep-regulating drug, such as ramelteon.

Abstract: A vertical-cavity surface-emitting laser (VCSEL) array may include an n-type substrate layer and an n-type metal on a bottom surface of the n-type substrate layer. The n-type metal may form a common anode for a group of VCSEL. The VCSEL array may include a bottom mirror structure on a top surface of the n-type substrate layer. The bottom mirror structure may include one or more bottom mirror sections and a tunnel junction to reverse a carrier type within the bottom mirror structure. The VCSEL array may include an active region on the bottom mirror structure and an oxidation layer to provide optical and electrical confinement. The VCSEL array may include an n-type top mirror on the active region, a top contact layer over the n-type top mirror, and a top metal on the top contact layer. The top metal may form an isolated cathode for the VCSEL array.

Abstract: A bullet-screen comment display method is provided.

Abstract: A second blockchain system receives a first consensus message from a first blockchain system, the first blockchain system includes first nodes that provide services to at least a first account, and the second blockchain system includes second nodes that provide services to at least a second account. The first consensus message indicates a first plurality of the first nodes reaches a consensus for transferring a resource from the first account to the second account. The second blockchain system transfers the resource in the task to the second account. The transferring includes that a node in the second nodes adds the resource to the second account and generates a fourth block that records a completion of a transfer event. A second consensus message is transmitted from the second blockchain system to the first blockchain system in response to a second plurality of the second nodes completing the transfer event.

Abstract: A sample to be measured is placed in a medium solution between two circular magnets to ensure that the sample to be measured is levitated in a set circular area between the two circular magnets, and a levitation position of the sample to be measured in the magnetic field is measured. The density of the sample is calculated according to formula (I): ? s = ? m + ? m - ? s g ? ? 0 ? ( B r ? ? B z ? r + B z ? ? B z ? z ) . Compared to the prior art, the method of the present disclosure provides a novel method for measuring a density of a substance, in which the involved device is easy to operate and has low cost, and the measurement results are easy to observe and have high accuracy.

Abstract: A backside emitter solar cell structure having a heterojunction, and a method and a device for producing the same. A backside intrinsic layer is first formed on the back side of the substrate, then a frontside intrinsic layer and a frontside doping layer are formed on the front side of the substrate, and finally a backside doping layer is formed on the back side of the substrate.

Abstract: The present disclosure provides a commodity positioning method and apparatus, a device and a storage medium. The method comprises: acquiring map information marked with multiple pieces of shelf identity information, wherein the multiple pieces of shelf identity information are in one-to-one correspondence with shelves; acquiring shelf image information corresponding to the shelf identity information; identifying, according to the shelf image information, a commodity corresponding to each of electronic price label apparatuses on a corresponding shelf and a first positional relationship between each of the electronic price label apparatuses and the corresponding shelf; generating location information of each of the commodities according to the first positional relationship and the map information.

Abstract: A backside emitter solar cell structure having a heterojunction. On one side edge of the backside emitter solar cell structure having the heterojunction, on an edge region of a crystalline semiconductor substrate of the backside emitter solar cell structure having the heterojunction having a doping of a first conductivity type, there is a layer sequence with a double intrinsic layer formed.

Abstract: A method for constructing a multistage network includes: deploying a plurality of nodes; constructing the upper network with at least one node of the plurality of nodes; and in response to determining there is an isolated node, determining an intermediate node for the isolated node and adding the isolated node into the upper network or one of the at least one sub-network according to the intermediate node.

Abstract: Disclosed is a microwave chemical method for totally extracting fluorine and rare earth from bastnaesite concentrate, including: alkaline conversion defluorination of bastnaesite through microwave irradiation, microwave-assisted leaching of fluorine, solid-liquid separation of leaching solution and microwave-assisted leaching of rare earth. The rare earth hydrochloric acid solution for leaching contains no fluorine ion, so that the fluorine interference of subsequent processes such as impurity removal can be completely avoided; the fluorine and the rare earth are leached with microwaves, which does not need the stirring, so that the automatic control is easy to implement; the fluorine and rare earth leaching speed is high, the leaching time is short and the complete leaching of fluorine and little residual alkali in the slag can be realized by two-time leaching; and no fluorine-containing waste water is discharged, and the total extraction of the rare earth can be realized by one-time leaching.

Abstract: Embodiments of the invention are directed to systems and methods for conducting a transaction utilizing a cryptocurrency. The user may fund a cryptocurrency account with his pre-existing cryptocurrency. An issuer may purchase cryptocurrency within a cryptocurrency exchange. The user may then utilize a payment device (e.g., a Crypto Debit Card) that is associated with a cryptocurrency balance to conduct a transaction with a merchant for goods and/or services. An authorization request message may be transmitted to the authorizing entity computer. The authorizing entity computer may determine a cryptocurrency amount corresponding to the fiat currency transaction amount of the authorization request message. A sell request message may be transmitted to an exchange that facilitates the sale of the cryptocurrency amount.

Abstract: A spliced screen and a display terminal are disclosed. In the spliced screen, a structural component is disposed on two adjacent display panels and covers a splicing gap between the two adjacent display panels. A lamp plate is disposed on a surface of the structural component. When the spliced screen displays an image, a plurality of luminescent bodies disposed on the lamp plate close to the display panels also emit light, thereby preventing black strips from appearing on the image. In the spliced screen, a viewing angle of the display panels and a viewing angle of the lamp plate are same, so that a brightness of the display panels and a brightness of the lamp plates are same when the spliced screen is viewed from a lateral side. As such, display quality is improved.

Abstract: A high-frequency transformer, includes: an iron core, primary windings and secondary windings, wherein the iron core is of an integrated equilateral triangle structure, the primary windings and the secondary windings are uniformly wound around three sides of the iron core, and the primary windings and/or the secondary windings are symmetrically distributed on the three sides.

Abstract: Provided are a method and apparatus for determining a blockage of a filter of a clothes dryer and a clothes dryer. The clothes dryer includes a motor. The method includes following steps. An actual rotational speed of the motor is acquired, and an electrical parameter corresponding to a rotational speed range to which the actual rotational speed belongs is determined as a first threshold corresponding to the actual rotational speed; an actual clothes volume in the clothes dryer is acquired, and the first threshold is corrected according to a correction coefficient corresponding to a clothes volume range to which the actual clothes volume belongs so that a second threshold is obtained; and an actual electrical parameter of the motor is acquired, and when it is detected that the actual electrical parameter is less than the second threshold, it is determined that the filter of the clothes dryer is blocked.

Abstract: The invention relates to antiviral compounds, compositions comprising antiviral compounds, and methods of use. In particular, the antiviral compounds are cytidine triphosphate synthetase 1 (CTPS1) inhibitors that are effective in treating and/or preventing viral infection and in particular, SARS-CoV-2 infection and/or COVID-19 disease.