Abstract: The present disclosure provides a charging case for at least one earphone. Each of the at least one earphone may include a core module and a hook structure connected to the core module. The charging case may include a lower housing assembly. The lower housing assembly may be disposed with at least one profiling groove, and each of the at least one profiling groove may be configured to accommodate one of the at least one earphone. The lower housing assembly may be disposed with a first electrode terminal exposed in each of the at least one profiling groove, and an extension direction of the first electrode terminal may be inclined with respect to a thickness direction of the charging case. Therefore, the success rate of the connection of the electrode terminals can be improved.

Abstract: An earphone is provided. The earphone comprises a core module, a hook structure, and an adjustment mechanism. The core module is configured to contact a front side of an ear of a user. At least a portion of the hook structure is configured to be hung between a rear side of the ear and the head of the user. The adjustment mechanism is configured to connect the core module and the hook structure. The adjustment mechanism enables the core module to cover at least a portion of a cavity of auricular concha of the ear without blocking an external ear canal of the ear in a wearing state, to allow the core module to cooperate with the cavity of auricular concha of the ear to form an acoustic cavity. The acoustic cavity connects a sound outlet hole of the core module and the external ear canal of the ear.

Abstract: A mildew-proof composite composition with a synergistic effect as well as a preparation method and application thereof is provided. The mildew-proof composite composition includes the following components in volume fraction: 10 to 50% of cinnamon essential oil, and 50 to 90% of mustard essential oil. The mildew-proof composite composition with the synergistic effect provided by the present invention is blended into a composite essential oil composition with a significant inhibitory effect and strong antibacterial effect through the interactions among the components.

Abstract: A fully-automatic aluminum thermal-spraying corrosion prevention production line based on robots and visual recognition is provided. The production line comprises an automatic feeding system comprising feeding carrying and conveying mechanisms; a laser derusting system comprising a derusting robot, a laser cleaning nozzle and derusting conveying mechanisms; an aluminum thermal-spraying system comprising an aluminum spraying robot and an aluminum thermal-spraying gun; an automatic rolling system comprising a rolling pedestal, a first rolling wheel, a second rolling wheel and a rolling drive mechanism; a laser cutting system; and a discharging and stacking system.

Abstract: A digital and informationized fully-automatic aluminum thermal-spraying production line includes: an automatic feeding system including first transfer mechanisms and first carrying conveying mechanisms; a laser cleaning system including a laser cleaning tank, laser cleaning nozzles and cleaning conveying mechanisms; a first transfer system including second carrying conveying mechanisms and second transfer mechanisms; an aluminum thermal-spraying system including traveling mechanisms, turning mechanisms and an aluminum spraying mechanism, the traveling mechanisms being configured to convey workpieces on the second carrying conveying mechanisms onto the turning mechanisms one-by-one, the turning mechanisms being configured to turn the workpieces by a preset angle, and the aluminum spraying mechanism being configured to perform aluminum arc-spraying on the workpieces.

Abstract: A use of citronellol in preparing a preparation for promoting an expression of a virulence gene toxA of Pseudomonas aeruginosa is disclosed. It was found that citronellol slightly inhibits the growth of a Pseudomonas aeruginosa PAO1 strain and can promote the transcription of the toxA of Pseudomonas aeruginosa, which can increase the yield of an exotoxin A, namely, an encoded product of toxA. Therefore, citronellol is applicable to the preparation of a preparation for promoting the expression of the virulence gene toxA of Pseudomonas aeruginosa.

Abstract: An application of geraniol in preparation of formulation for promoting synthesis of Pseudomonas aeruginosa 3OC12-HSL signal molecules is provided. It was found that geraniol slightly inhibits growth of Pseudomonas aeruginosa PAO1 strain, but can significantly promote synthesis of the 3OC12-HSL signal molecules of the bacterium, and thus can be applied to preparation of formulation for promoting synthesis of the Pseudomonas aeruginosa 3OC12-HSL signal molecules.

Abstract: A server acquires a feature label vector of each seed user and forms a first number of clusters corresponding different information categories according to the feature label vectors of the seed users. The server calculates a central vector of each cluster according to the feature label vectors of the seed users in the cluster. The server acquires a feature weight vector corresponding to the information categories. The server acquires a feature label vector of each potential user. The server calculates first distances from the potential users to the central vector of the information categories according to the feature label vectors of the potential users, feature weight vectors and central vectors corresponding to the information categories. The server selects a second number of potential users corresponding to the shortest first distances from the first distances and sends them information that is matched with corresponding information categories of the target users.

Abstract: A use of citronellol in preparing a preparation for promoting an expression of a virulence gene toxA of Pseudomonas aeruginosa is disclosed. It was found that citronellol slightly inhibits the growth of a Pseudomonas aeruginosa PAO1 strain and can promote the transcription of the toxA of Pseudomonas aeruginosa, which can increase the yield of an exotoxin A, namely, an encoded product of toxA. Therefore, citronellol is applicable to the preparation of a preparation for promoting the expression of the virulence gene toxA of Pseudomonas aeruginosa.

Abstract: A control resource allocation method, an apparatus, an electronic device, and at least one non-transitory computer readable storage medium are provided. The method includes identifying resource usage status information for the first period, and determining control resource set (CORESET) time-frequency resources and uplink/downlink (UL/DL) control channel element (CCE) patterns for the first period, based on the resource usage status information.

Abstract: The application is to antibodies which have been labelled with polyenzymes (multiple enzymes), specifically polyperoxidases, for use in direct immunohistochemical assays of tissues. The antibodies used diagnostically may also be antibodies which are used therapeutically.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for level shifting an input signal ranging between certain voltage levels to generate an output signal ranging between other voltage levels with low power, high speed, and immunity to noise. One example level-shifting circuit generally includes a node for receiving an input signal ranging between a first voltage level and a second voltage level, a first circuit path coupled to the node and configured to level shift the input signal to generate an output signal ranging between a third voltage level and a fourth voltage level, a pulse generator coupled to the node and configured to generate a pulse based on a transition in the input signal between the first and second voltage levels, and a second circuit path connected in parallel with the first path and configured to temporarily short the first path based on the generated pulse.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

Abstract: A server acquires a feature label vector of each seed user and forms a first number of clusters corresponding different information categories according to the feature label vectors of the seed users. The server calculates a central vector of each cluster according to the feature label vectors of the seed users in the cluster. The server acquires a feature weight vector corresponding to the information categories. The server acquires a feature label vector of each potential user. The server calculates first distances from the potential users to the central vector of the information categories according to the feature label vectors of the potential users, feature weight vectors and central vectors corresponding to the information categories. The server selects a second number of potential users corresponding to the shortest first distances from the first distances and sends them information that is matched with corresponding information categories of the target users.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.