Abstract: Provided are an application of a citrate metal salt in endodontic treatment, and a formulation obtained by preparation; said citrate metal salt is used for removing a tarnished layer, and the citrate metal salt is lithium citrate, sodium citrate, potassium citrate, or magnesium citrate. The citrate metal salt is co-formulated with a citrate metal salt-compatible single-chain cationic antimicrobial agent, achieving results that are currently achieved only by alternating rinsing with EDTA-containing and sodium hypochlorite preparations in endodontic treatment.

Abstract: The present disclosure discloses an earphone. The earphone may include a hook-shaped component, a connecting component, and a holding component. When the earphone is in a wearing state, the hook-shaped component may be configured to hang between a rear side of an ear of a user and a head of the user. The holding component may be configured to contact a front side of the ear. The connecting component may be configured to connect the hook-shaped component and the holding component and extend from the head to an outside of the head to cooperate with the hook-shaped component to provide the holding component with a pressing force on the front side of the ear.

Abstract: A trajectory planning method and a related device are provided, to plan a sub-lane-level trajectory, so that an autonomous vehicle drives along the sub-lane-level trajectory, and driving stability and safety of the autonomous vehicle are improved by using the sub-lane-level trajectory. Target information is obtained, where the target information includes at least one of a driving status of a target vehicle and first road condition information.

Abstract: Methods and apparatuses for receiving and transmitting configuration information and a communication system. The method includes: configuring or predefining one or more transmission configuration indication states by a terminal equipment for one or more demodulation reference signal port groups. Hence, even in scenarios such as multiple TRPs or multiple panels, the receiving device may correctly and punctually receive transmission information transmitted by the transmitting device.

Abstract: A vehicle control method, a vehicle control apparatus, an electronic device and a self-driving vehicle all relates to the field of self-driving and intelligent transportation technologies. The method includes: when a vehicle is moving, in a case that an occluding object is detected, determining a hard brake speed limit point and a potential collision point according to a planned path of the vehicle and position information of the occluding object; calculating a speed limit value of the hard brake speed limit point based on a distance between the hard brake speed limit point and the potential collision point; in a case that a planned speed of the vehicle at the hard brake speed limit point is less than or equal to the speed limit value, controlling the vehicle to move at the planned speed.

Abstract: An image selection method, applied to a self-propelled apparatus, includes: collecting an image from a surrounding environment through an image collection device during the self-propelled apparatus travels; scoring the image according to a scoring rule when there is a recognizable obstacle in the collected image, wherein a value of the scoring is used to indicate an imaging quality of the recognizable obstacle in the image; and selecting an image that comprises the recognizable obstacle and that has a highest score as a to-be-displayed image in response to receive a request to view the image of the recognizable obstacle. A computer-readable storage medium and a self-propelled apparatus are further provided.

Abstract: A corner point detection method and apparatus, which may improve the efficiency of corner point detection is disclosed. The corner point detection method includes: obtaining a plurality of corner points of a target object in an image to be detected, where the plurality of corner points are corner points on a contour of a first object in the image to be detected, and the contour of the first object includes a contour of the target object; obtaining a region proportion corresponding to each of the plurality of corner points, where the region proportion is a proportion of a region of the first object in a predetermined region centered on the corner point; and determining a target corner point of the target object from the plurality of corner points based on the region proportion.

Abstract: The present disclosure provides a hollow-core microstructure optical fiber preform, an optical fiber, and a method for manufacturing thereof. An objective of the present disclosure is to introduce a support sheet into a nested structure unit of the hollow-core microstructure optical fiber preform, which not only increases the number of reflection surfaces without increasing the number of nested layers of glass tubes, but also achieves a more accurate positioning by the support sheet and improves manufacturing accuracy as compared to a tangential structure of nested glass tubes, such that the following technical problems, difficulty in controlling a curvature of reflection surfaces, low manufacturing accuracy, large difference between actual loss and theoretical loss, or poor batch consistency, in related anti-resonance optical fibers, caused by increasing the number of layers of nested microstructure units in order to increase the number of reflection surfaces, are solved.

Abstract: The present disclosure provides an alkali metal-modified acoustic reinforcing material, a production method thereof, a speaker and an electronic device. The alkali metal-modified acoustic reinforcing material is prepared by homogeneously mixing an alkali metal-modified molecular sieve, a binder, a dispersant and an auxiliary agent and then shaping; wherein the content of the alkali metal-modified molecular sieve is not less than 70%, the content of alkali metal is 0.001-1.45%, the dry basis content of the dispersant is 0-1%, and the dry basis content of the auxiliary agent is 0-15%, based on 100% of the total weight of the alkali metal-modified acoustic reinforcing material.

Abstract: Provided herein are processes for synthesizing compounds useful as EGFR modulators.

Abstract: The present disclosure provides an iron-modified acoustic material, prepared by homogeneously mixing an iron-modified molecular sieve, a binder, a dispersant and an auxiliary agent and then shaping the mixture; wherein the content of the iron-modified molecular sieve is not less than 70%, the content of iron is 0.004-1.7%, the dry basis content of the dispersant is 0-1%, and the dry basis content of the auxiliary agent is 0-15%, based on 100% of the total weight of the iron-modified acoustic material. In the present disclosure, a molecular sieve is modified with an iron source to produce the iron-modified molecular sieve, and the iron-modified acoustic material is produced from the iron-modified molecular sieve as a raw material and provided in a rear cavity of a speaker, which can substantially improve its stability and reliability in terms of acoustic performance.

Abstract: The present disclosure provides zinc finger fusion proteins that inhibit expression of alpha-synuclein in the nervous system, and methods of using the proteins to treat Parkinsons disease, Lewy body dementia, multiple system atrophy, Alzheimers disease, and other neurodegenerative diseases.

Abstract: Disclosed are a computer-implemented method, a system and a computer program product for record management in a time series database (TSDB). In the computer-implemented method for record management in a TSDB, time series records can be obtained from distributed sources by one or more processing units. The records can be divided into different record groups based on a timestamp of each of the records by one or more processing units. The records in each of the record groups can be normalized into normalized records by one or more processing units. The normalized records can be stored in the TSDB by one or more processing units.

Abstract: Examples disclosed herein may involve a computing system that is configured to (i) obtain previously-derived perception data for a collection of sensor data including a sequence of frames observed by a vehicle within one or more scenes, where the previously-derived perception data includes a respective set of object-level information for each of a plurality of objects detected within the sequence of frames, (ii) derive supplemental object-level information for at least one object detected within the sequence of frames that adds to the previously-derived object-level information for the at least one object, (iii) augment the previously-derived perception data to include the supplemental object-level information for the at least one object, and (iv) store the augmented perception data in an arrangement that encodes a hierarchical relationship between the plurality of objects, the sequence of frames, and the one or more scenes.

Abstract: A method for parallel processing of retinal images includes: optimizing an objective function with a chaotic supply-demand algorithm to enhance a real retinal image; synthesizing a virtual retinal image by a hybrid image generation method; establishing a parallel multi-layer decomposed interval type-2 intuitionistic fuzzy convolutional neural network model based on the virtual retinal image and the enhanced real retinal image; and integrating outputs from a plurality of parallel multi-layer decomposed interval type-2 intuitionistic fuzzy convolutional neural network models as a final classification result.

Abstract: A photonic chip and a preparation method thereof are provided. The chip includes a lithium niobate film modulator array, a first optical coupling array, and a silica waveguide wavelength-division multiplexer, and the lithium niobate film modulator array includes one or more lithium niobate film modulators and is used to modulate an optical signal; the first optical coupling array includes one or more first optical coupling structures, and the first optical coupling structure has one end connected to a corresponding lithium niobate thin film modulator and the other end connected to the silica waveguide wavelength-division multiplexer so as to transmit the modulated optical signal to the silica waveguide wavelength-division multiplexer; and the silica waveguide wavelength-division multiplexer is used to perform wavelength-division multiplexing on the modulated optical signal.

Abstract: The present disclosure provides an earphone including a sound production component, an ear hook, and a microphone assembly. The microphone assembly includes a first microphone and a second microphone. The sound production component or ear hook includes a first sound hole and a second sound hole corresponding to the first microphone and second microphone, respectively. An extension line of a line connecting a projection of the first sound hole on a sagittal plane of the user and a projection of the second sound hole on the sagittal plane has an intersection point with a projection of an antihelix, a ratio of a first distance between the projection of the first sound hole on the sagittal plane and the projection of the second acoustic hole on the sagittal plane to a second distance between the projection of the second acoustic hole on the sagittal plane and the intersection point is 1.8-4.4.

Abstract: The present disclosure relates to a device for processing an audio signal. The device may include a first acoustic-electric transducer and a second acoustic-electric transducer. The first acoustic-electric transducer may have a first frequency response, and may be configured to detect the audio signal and generate a first sub-band signal according to the detected audio signal. The second acoustic-electric transducer may have a second frequency response, the second frequency response being different from the first frequency response. The second acoustic-electric transducer may be configured to detect the audio signal and generate a second sub-band signal according to the detected audio signal.

Abstract: The present disclosure relates to a speaker device. The speaker device may include a speaker assembly and a supporting connector. The speaker assembly may include a speaker module and a button module. The supporting connector may be configured to contact with the human head and provide a vibration fulcrum for a vibration of the speaker assembly. A distance between a center of the button module and the vibration fulcrum may be not greater than a distance between a center of the speaker module and the vibration fulcrum.