Abstract: A vending machine for storing and selling restricted commodities, and a vending method implemented therein. In the vending machine, a control module comprises a processor executing program codes to provide a vending service. A user interface is connected to the control module, comprising a sensor sampling biometric characteristics of a user. A communication module is connected to the control module, comprising a wireless transceiver configured to receive commands from the control module, and communicate with a central system or the user. The control module drives said sensor to capture the biometric characteristics of the user, and then uploads the biometric characteristics to the central system through the communications module. A database storing associations of the biometric characteristics and identity characteristics of users. The control module receives a search result from the database based on the biometric characteristics of the user to determine whether a restricted commodity is authorized for sale.

Abstract: A method of forming a memory cell comprises the following steps. A bottom electrode layer is formed over a substrate. A variable resistance film is formed over the bottom electrode layer. The variable resistance film comprises a first orthorhombic phase with a first fraction in the variable resistance film. A top electrode layer is formed over the variable resistance film. A laser anneal process is performed to the substrate, the bottom electrode layer, the variable resistance film and the top electrode layer. After performing the laser anneal process, the variable resistance film comprises a second orthorhombic phase with a second fraction in the variable resistance film, and the second fraction is different from the first fraction.

Abstract: A graphene electronic heating device and a preparation method thereof are provided. The graphene electronic heating device includes a graphene layer, which is used as a heat source for fully heating a to-be-combusted substance in an accommodating cavity, a Teflon layer and a ceramic layer, which are arranged for realizing that the to-be-combusted substance can be continuously and stably combusted in the accommodating cavity without peculiar smell diffusion, and meanwhile increasing the endurance time of the graphene electronic heating device under the equal energy storage; the preparation method has simple process, convenient process control and stable product quality, and facilitates to large-scale production.

Abstract: A displayed power correction method, adapted to a target battery with a battery temperature lower than a threshold temperature, is performed by a controller and includes: determining whether the target battery is a first type battery or a second type battery according to designed power of the target battery, lowering displayed power according to a first default rate of the first type battery when the target battery is the first type battery and a battery cell voltage of the target battery is lower than a threshold voltage, and lowering displayed power according to a second default rate of the second type battery when the target battery is the second type battery and a capacity parameter or a voltage parameter of the target battery is higher than a default value.

Abstract: An optical system, an optical module, and a LiDAR device are provided. The optical system includes: a lens group, arranged sequentially along an optical axis from an object side to an image side; and an optical element, disposed on a transmission optical path of the lens group, the optical element having different focal lengths in a first direction and a second direction; where the first direction and the second direction have an included angle therebetween and are both perpendicular to the optical axis, and a focal length of the optical system in the first direction is different from a focal length of the optical system in the second direction.

Abstract: A method for controlling carbide network in a bearing steel wire rod by controlling cooling and rolling, comprises the following steps: rapidly rolling a bar to a wire rod and spinning it into a loose coil, controlling the rolling temperature at 780° C.-880° C.; and the spinning temperature at 750° C.-850° C.; carrying out on-line controlling cooling of continuous loose coils using EDC water bath austempering cooling process, controlling the cooling rate at 2.0° C./s-10° C./s, and controlling the final cooling temperature within 620-630° C.; after EDC water bath austempering cooling, using slow cooling under a cover, and the temperature is controlled to be 400° C.-500° C. when being removed out of the cover; after slow cooling, collecting coils, and cooling in air to the room temperature.

Abstract: Method and associated system for managing and/or authenticating an energy storage device. The method includes receiving a first portion of identification information stored in a data storage attached to the energy storage device (401); analyzing the first portion of the identification information at least partially based on a device identification of the device (403); updating a second portion of the identification information stored in the data storage attached to the energy storage device based on a result of analyzing the first portion of the identification information (405).

Abstract: An optical device for homogenizing and diffusing light, an emitting terminal and optical system are provided. An implementation of the optical device for homogenizing and diffusing light includes: a microlens array element, the microlens array element homogenizing and diffusing a light beam in a first direction, a second direction, or a first direction and a second direction, to form a homogeneous light beam, wherein the first direction and the second direction are perpendicular to each other.

Abstract: A gas water heater includes a bottom housing having an opening, a burner mounted at the bottom housing, and a cover plate assembly mounted at the bottom housing and covering the opening. The cover plate assembly includes a first cover plate and a second cover plate. The second cover plate is located between the burner and the first cover plate. The cover plate assembly has an air inlet channel located between the first cover plate and the second cover plate. The first cover plate has a first flow inlet in communication with the air inlet channel. The second cover plate has a second flow inlet distant from the first flow inlet, and in communication with the air inlet channel and an air inlet of the burner.

Abstract: A remote radio head unit tester and a method for testing a remote radio head unit is shown and described. The remote radio head tester includes a chamber having an interior volume. The chamber encloses electrical components, at least one of the electrical components is a computer which has a testing algorithm installed thereon. A frame secured to the chamber. At least one set of wires operably coupled with the electrical components. The remote radio head unit tester is configured to test a remote radio head unit by booting up the remote radio head unit. The remote radio head unit can only be booted up after the correct power cables and data cables have been connected to the remote radio head unit. Checking the software version of the remote radio head unit and updating the software. Testing the power connections of the remote radio head unit.

Abstract: A memory device includes a semiconductor substrate, a first continuous floating gate structure, a dielectric layer, and a control gate electrode. The semiconductor substrate has a first active region. The first continuous floating gate structure is over the first active region of the semiconductor substrate, wherein the first continuous floating gate structure has first and second inner sidewalls facing each other. The dielectric layer has a first portion extending along the first inner sidewall of the first continuous floating gate structure and a second portion extending along the second inner sidewall of the first continuous floating gate structure. The control gate electrode is over the dielectric layer. The control gate electrode is in contact with the first and second portions of the dielectric layer.

Abstract: Disclosed is a method for removing impurity mercury from crude selenium. The method includes: mixing a vulcanizing agent with a crude selenium slag that is crushed to not more than 200 mesh uniformly, and performing briquetting to obtain a mixed material; adding the mixed material into a sealed furnace, and subjecting the mixed material to vulcanization by heating under an inert atmosphere to obtain a vulcanized selenium; subjecting the vulcanized selenium to primary vacuum distillation, such that selenium is converted into a gas phase and collected in a form of a volatile, and generated mercury sulfide and valuable elements are enriched in a resulting residue; and subjecting the selenium to secondary distillation to further remove mercury.

Abstract: Provided in the present disclosure are an image projection device, and a method for manufacturing the image projection device. The image projection device comprises: an illumination assembly for emitting a light beam; and a first optical component, which is used for allowing light emitted by the illumination assembly to pass through. The image projection device is characterized in further comprising: a first fastening member, which is arranged on the first optical component; a second optical component, which is used for allowing the light passing through the first optical component to pass through; and a second fastening member, which is arranged on the second optical component and adapted to be fastened to the first fastening member, so as to assemble the first optical component and the second optical component as a whole.

Abstract: This invention presents an electrochemical metallurgical technique for extracting metals and sulfur from metal sulfides, offering an adjustable composition and mechanical properties during electrode preparation. The metal sulfide anode, submerged in an electrolyte with a cathode made of materials like titanium, copper, stainless steel, lead, zinc, aluminum or graphite, undergoes electrolysis. This process oxidizes sulfur in the metal sulfide to the anode and releases metal ions into the electrolyte, where they're reduced at the cathode. The method yields metal at the cathode and sulfur at the anode, with minimal environmental impact, low investment, and straightforward process.

Abstract: Provided is a recovery method for valuable metals in copper anode slime. By using the recovery method of the disclosure, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver in the copper anode slime are recovered. The method adopts two-step vacuum carbothermal reduction to replace reduction smelting of anode slime and stepwise blowing of noble lead in the traditional pyrometallurgy, and avoids the emission of arsenic-containing soot in the traditional process. The recovered gold-rich residue contains almost no base metals such as lead, bismuth, antimony, and arsenic. After subjecting the gold-rich residue to leaching gold by chlorination and reduction, a gold powder could be obtained therefrom with a lower content of base metals than traditional processes. Therefore, the method greatly reduces the amount of produced slag, shortens the production cycle, and reduces the loss of precious metals in the slag.

Abstract: A multi-region imaging device (1000?, 2000) and method (9000?). The multi-region imaging device (1000?, 2000) comprises: a picture light projection plate (1100?, 2100?), wherein the picture light projection plate (1100?, 2100?) comprises a first region (1110?, 2110?) and a second region (1120?, 2120?) that do not overlap each other, the first region (1110?, 2110?) and the second region (1120?, 2120?) emit picture light for imaging; and an optical path compensation section (1200?, 2200?), wherein the optical path compensation section (1200?, 2200?) is arranged on a propagation path of the picture light emitted by the second region (1120?, 2120?), and the picture light emitted by the second region (1120?, 2120?) is transmitted by the optical path compensation section (1200?, 2200?) and optical path compensation is carried out thereon.

Abstract: An optical lens assembly includes a lens unit and a holder. The lens unit includes at least a front lens and a rear lens, and the holder includes a positioning portion and a holding portion extended downwardly the positioning portion. The positioning portion and the holding portion are integrated with each other. The holding portion forms a light chamber for holding the lens unit therein, wherein the light chamber allows imaging lights to enter thereinto and pass through the lens unit. The positioning portion is sealed on the outer surface of the front lens along the outer periphery of the front lens.

Abstract: In a method for controlling a cooking device, during operation of the cooking device at least one monitoring data is obtained, with a dimension of the monitoring data including at least one of a surface temperature of a cooked object, a weight of the cooked object, or a chamber temperature of the cooking device. The monitoring data is inputted to a preset regression model to obtain a predicted internal temperature of the cooked object, with the preset regression model representing a correlation between an internal temperature of the cooked object and the monitoring data. An operating status of the cooking device is adjusted according to at least the predicted internal temperature of the cooked object.

Abstract: A method and a sensor for detecting L-cystine are disclosed. The method is implemented by assembling a sodium 3,3?-dithiodipropane sulfonate (SPS) membrane on a surface of Au membrane layer of an Au electrode and using an extended gate of field effect transistor (FET) and in-situ signal amplification of the FET to detect L-cystine sensitively. The polyanion of the SPS membrane adsorbs and binds a positively charged target L-cystine through electrostatic interaction, thus forming an electric double layer structure to generate a membrane potential identifying a monovalent organic ammonium ion. The sensor includes the FET, wherein a gate-extended gold electrode is arranged on the FET, and the SPS membrane is assembled on the surface of the Au membrane layer of the gate-extended gold electrode. The sensor has an excellent Nernst response to L-cystine.

Abstract: A holder includes a holder body, a holding part supported in a manner movable in a first direction relative to the holder body, and a holding part driver that drives the holding part. The holding part includes a supported portion supported by the holder body, a base extending downward from the supported portion, and an extension extending from the base in the first direction. The extension includes, on an upper surface of the extension, a mount area on which the lower surface of the handle is placeable. The extension includes a protrusion located opposite to the base across the mount area in the first direction. The protrusion protrudes upward from the mount area.