Abstract: An autonomous mobile robot control method and apparatus, a device and a readable storage medium. An autonomous mobile robot determines a sound source direction according to a voice signal from a user, and determines moving objects around the autonomous mobile robot itself. The autonomous mobile robot determines, from the moving objects, a target object located in the sound source direction, determines a working area according to the target object, and moves to the working area, and executes a task.

Abstract: A method for validating a well test includes receiving historical well test data. The historical well test data includes one or more accepted flags and one or more rejected flags. The method also includes training a machine-learning (ML) model based upon the historical well test data to produce a trained ML model. The method also includes receiving new well test data. The new well test data does not include the one or more accepted flags and the one or more rejected flags. The method also includes determining whether the new well test data meets or exceeds a predetermined validation threshold using the trained ML model.

Abstract: A high-uniformity SiC crystal, a crystal bar, a substrate and a semiconductor device are provided. The SiC crystal is obtained by direct growth through a PVT method without subsequent machining, and includes a facet region and a non-facet region. The facet region is located on an outer-circumference end face of the SiC crystal. A doping concentration change rate of the facet region is 1.5 times or above that of the non-facet region; and/or a carrier concentration change rate of the facet region is 5 times or above that of the non-facet region.

Abstract: A high-quality SiC crystal, a crystal bar, a substrate, a preparation method, and a semiconductor device are provided. The SiC crystal contains a facet region and a non-facet region; and the facet region is located on an outer circumference of the SiC crystal, a distance between an edge of the facet region away from the outer circumference and the outer circumference does not exceed 3% of a diameter of the SiC crystal, and the SiC crystal is obtained by adopting a PVT method through direct growth without subsequent processing. In a subsequent processing process of the crystal, the facet region is eliminated, and the situation that the entire crystal bar and a wafer and substrate processed accordingly have no facet region is implemented with a low cutting loss rate.

Abstract: An atomizer includes: a liquid storage cavity; and an atomization base arranged opposite to and in fluid communication with the liquid storage cavity. An accommodation cavity is arranged in the atomization base, and an air exchange member communicating with an outside is arranged in the accommodation cavity. A first opening is arranged in the atomization base, the first opening being in airflow communication with the air exchange member and the liquid storage cavity.

Abstract: Vector dataset index parameter determination is performed by building an index of a vector dataset according to each build parameter group among a plurality of build parameter groups, generating search parameter groups, submitting each vector query in a vector query set to each index to obtain, for each vector query, a result content and a result delay value, wherein an accuracy value is determined based on the result content, correlating build parameter values and search parameter values with accuracy values and result delay values, fixing build parameter values based on the correlating, and determining a mathematical relationship expressing a correlation of the search depth parameter values, the numbers of requested results, and the accuracy values obtained in response to vector queries submitted to the index having the fixed build parameter values.

Abstract: A method for controlling a laser processing device, a device, and a computer program medium are provided. The laser processing device is equipped with an execution module to execute laser processing. The method includes the following. An intervention is sensed during the laser processing performed by the laser processing device. The execution module is controlled to switch a laser output to a weak light output in response to the intervention, where a power of a weak light is less than a reference laser power of the laser processing.

Abstract: A power supply circuit, a driving method thereof, a printed circuit board, a display module and a display apparatus are disclosed, which relates to a technical field of displaying. The power supply circuit includes a first power management chip and a second power management chip configured to be respectively connected with a display panel and provide different driving signals to the display panel, and the driving signals are configured for driving the display panel to display.

Abstract: A method and system for networking of spliced building blocks, and the spliced building blocks applicable to wireless networking are provided.

Abstract: In the present invention, a multi-stage foam sound-absorbing black body material is provided for the first time. A graphene aerogel is introduced into a commercialized polymer foam skeleton by using a solvent plasticizing and foaming technology, so as to embed ultra-thin graphene drums in the foam skeleton. When sound waves enter the foam black body, a large number of graphene drums generate a severe resonance effect, thereby rapidly achieving attenuation of the sound waves, and combined with the friction loss of the porous structure of the polymer foam on the sound waves, excellent sound-absorbing performance is achieved in a wide frequency range. The present solution is provided on the basis of commercialized foam materials, has a simple method, low costs, and the potential of wide industrial application.

Abstract: A method for preparing nanomaterial macroscopic composites through substrate heating and solvent evaporation is provided, and the method includes setting a substrate, and preparing a reaction precursor solution required for the synthesis of nanomaterials; evenly dropping a small volume of the precursor solution on/in the substrate; performing a heating method to make the substrate generate a heat and transferring the heat to the precursor solution on/in the substrate; after a period of time, terminating the heating of the substrate to finish the synthesis, removing and cleaning the substrate, thus obtaining corresponding nanomaterial macroscopic composites.

Abstract: A nanoparticle drug based on a small interfering RNA (siRNA) targeting JFK and use thereof are provided. Nucleotide sequences of the sense strand and the antisense strand of the siRNA targeting JFK are set forth in SEQ ID NO: 1 and SEQ ID NO: 2, respectively. Liposomes can be used to encapsulate the complex of the siRNA and a protamine to produce a nanoparticle drug targeting JFK, which may be used to treat a disease related to abnormally-high expression of JFK. In this disclosure, breast cancer 4T1 cell-based tumor-bearing mice serve as the model for evaluating the anti-tumor activity of combined therapy involving the nanoparticle drug targeting JFK and radiotherapy. The results reveal that this combined therapy exhibits superior anti-tumor activity compared to the control group.

Abstract: The present invention provides a downhole hydraulic directional control valve, comprising a valve body assembly having a shell, an outer tube being provided in the shell, a middle joint connecting the outer tube and an upper cylinder, an outer cylinder connected to the upper cylinder, and a double-way joint being provided with an oil inlet hole, and connecting top ends of the outer cylinder and an inner cylinder; a valve core assembly having an upper valve core, and a lower valve core being positioned at bottom end of the upper valve core and further positioned in a lower cylinder at bottom end of the middle joint; and, a plunger assembly having a first plunger part positioned in the inner cylinder and a second plunger part at bottom end of the first plunger part. By using this valve, the operation efficiency is improved, and the reliability of the equipment is ensured.

Abstract: A driving control apparatus, a driving control method and a display apparatus. When a display panel is in a power-on state and it is determined that a user leaves the display panel, a backlight stop signal (VBN) is first output, and a voltage stop signal (VPN) is then output. A backlight control circuit (320) stops operating in response to the backlight stop signal. In response to the voltage stop signal, a power switching circuit (330) stops outputting a driving voltage for driving the display panel to display a picture. When determining that the user returns to the front of the display panel, a voltage start signal (VPQ) can first be output, and a backlight start signal (VBQ) is then output. The backlight control circuit starts to operate in response to the backlight start signal. The power switching circuit outputs the driving voltage in response to the voltage start signal.

Abstract: A preparation method for a large crystal region high crystallinity carbonaceous fiber, where a wet spinning method is mainly used to assemble graphene oxide and other polymer materials in liquid phase, a two-dimensional graphene oxide sheet performs a “template orienting effect” on polymer molecules, making the directional crystallization of polymer molecules, resulting in fiber with high orientation and crystallinity. Graphene sheet catalyzes pyrolyzed molecules through a “graphitization inducing effect” to directionally generate graphene-like carbon layers after following high temperature treatment, thereby promoting stacking behavior of graphene sheets, and a composite carbonaceous fiber with an optimal crystallinity is prepared. The graphene fiber material prepared by the present method has characteristics of low cost, high crystallinity and high performance, and can be applied to a field of lightweight structural materials.

Abstract: A gap caulking device and a caulking method are provided, wherein the gap caulking device includes long plates, short plates, a dial plate, a three-way joint, a tensioner and a limit rod, and a closed quadrilateral structure with an adjustable angle is formed by two long plates hinged to each other and two short plates hinged to each other, a dial plate and a pointer are respectively provided on the two short plates, damping rods hinged on the two short plates to each other and a three-way joint matched with the two long plates are passed through by a limit rod to achieve connection limiting, and a shape memory alloy wire is connected to the three-way joint by a tensioner and is parallel to the limit rod. The problem is overcome that the original traditional wedge-shaped material that gaps rely on has a single filling function.

Abstract: The present application provides a pavement technical condition detection method and device based on a three-dimensional contour. The method includes: acquiring three-dimensional contour data and grayscale data of a pavement on the basis of a line scanning three-dimensional measurement sensor; preprocessing the three-dimensional contour data and the grayscale data, where the preprocessing includes performing three-dimensional modeling according to the three-dimensional contour data to acquire three-dimensional modeling data and correcting the grayscale data; and extracting a key contour of each cross section in the three-dimensional modeling data, and performing pavement technical condition index detection on the pavement according to the three-dimensional modeling data, the key contour, and the corrected grayscale data to acquire a technical condition index of the pavement.

Abstract: Provided herein are biotechnology reagents provided with a poloxamer excipient. In particular, haloalkane-linked fluorophores are provided in solution or a lyophilized formulation with a poloxamer that allows for storage, accurate dispensing/measurement, reconstitution, and addition to complex biological samples without the requirement of organic solvents.

Abstract: The present invention discloses a construction method of 3D printing and weaving integrated building, comprising: selecting basic building structural components, using finite element analysis after spatial modeling, and combining stress nephogram to set a discrimination domain value and optimize a structure space, obtaining a structural component skeleton; calculating and analyzing the structural component skeleton, determining a weaving range and weaving density of a wire according to weak areas and sizes under structural stress; and then determining a printing process and weaving process according to the structural component skeleton, the weaving range and the weaving density; preparing 3D printing material; 3D printing a matrix and weaving the wire according to the printing process and weaving process, constructing layer by layer, or printing segments, and then connecting segments by preset tenoning structural sections to form a 3D printing and weaving integrated building.