Abstract: The present disclosure discloses an in-vehicle independent sound zone control method, a system and a related device, applied to a vehicle. The method includes the following steps: presetting a control area and a non-control area; arranging a speaker array behind a front seat of the vehicle for generating a first acoustic response, and arranging a headrest speaker at a headrest on a rear seat of the vehicle for generating a second acoustic response; fitting a virtual target speaker, wherein the virtual target speaker is configured to generate a target acoustic response within the control area; and controlling a sound quality of the in-vehicle independent sound zone through an audio algorithm processing on the target acoustic response, the first acoustic response and the second acoustic response.

Abstract: The invention provides a sound field optimization method, including steps of building up a first acoustic response model for a controlled area inside a car and building up a second acoustic response model for an uncontrolled area inside the car; building up a first acoustic response difference calculation model based on the first acoustic response model and the second acoustic response model; calculating optimal solution of audio parameters; and controlling each speaker to output audio signals according to corresponding optimal solution of audio parameters. Thus, the vocal area isolation is achieved, so as to provide more extreme acoustic hearing, sound field effect in the controlled area where the user is located inside the car is optimized.

Abstract: A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.

Abstract: The present disclosure discloses an in-vehicle virtual soundscape method, a virtual soundscape is arranged in the automobile, the virtual soundscape is a sound scenario of a target environment created acoustically in the automobile, the method comprises the following steps: S1, processing a specific program material signal by means of a preset algorithm, and generating an audio signal; and S2, playing a sound in the audio signal by means of the virtual soundscape, the specific program material signal being a multi-track dry sound recorded for real representation of an acoustic scenario of the target environment. The present disclosure further discloses an in-vehicle virtual soundscape system including a vehicle-mounted information entertainment module, a multi-channel audio link module, a processor module, an audio drive module, and a multi-channel speaker which are connected in sequence. Compared with the related art, the user experience of the technical solutions of the present invention is good.

Abstract: A pollen polysaccharide extract prepared by the following method: mixing rape pollen with water, then heating and stirring for extraction, filtering, mixing filtrates, adding chitosan to a resulting filtrate to obtain a liquid to be clarified, keeping the liquid to be clarified at 60-80° C. for at least 1 h, cooling and allowing to stand, and performing solid-liquid separation to obtain a liquid, namely the pollen polysaccharide extract.

Abstract: The present application discloses a probe sterilization device including: a housing defining a cavity with an opening, the housing including a cover plate capable of covering the opening; a cover plate drive, capable of driving, in response to a cover plate drive control signal, the cover plate to move so as to open the opening; a support, arranged in the housing and capable of fixing the probe; an ultraviolet light source, arranged in the housing and capable of being turned on in response to a light source control signal; and a processor, electrically connected to the cover plate drive and capable of sending the cover plate drive control signal to the cover plate drive, and electrically connected to the ultraviolet light source and capable of sending the light source control signal to the ultraviolet light source. The present application further discloses a probe sterilization method and an ultrasonic imaging system.

Abstract: The present disclosure provides an automobile and a noise reduction method thereof, wherein the automobile includes an automobile body having an accommodating space and a plurality of doorways communicating with the accommodating space, a door configured for closing each doorway, at least one seat, at least one sound collecting device mounted on the automobile body at a periphery of each door, at least two sound devices mounted on at least one seat, and a processor electrically connected to all the sound devices and all the sound collecting devices. A noise reduction system composed of all the sound devices, all the sound devices, and the processor can perform noise reduction on a preset area in the accommodating space. The embodiments of the present invention expand and reuse a system composed of original sound collecting devices and sound devices in the automobile, without stacking materials on the doors or the automobile body.

Abstract: The present invention mainly relates to the field of information technology, and specifically to a method and system for cryptographic attribute-based access control supporting dynamic rules. In the system, the protected object is stored in an encrypted form, only the access request satisfying the access policy in attribute-based access control can be authorized to decrypt the object, which ensures that the access to data in an unsecure environment can be authorized according to a security policy, and supports dynamic policy and real-time authorization of attributes.

Abstract: A vaporizer device may include a shell, a cartridge receptacle, and a skeleton. The cartridge receptacle may be formed from a cartridge interface disposed at least partially inside a sheath. The cartridge interface may be configured to provide a plurality of electrical couplings with a vaporizer cartridge when the vaporizer cartridge is disposed inside the cartridge receptacle. The plurality of electrical couplings may include a first electrical coupling with a heating element of the vaporizer cartridge. The plurality of electrical couplings may further include a second electrical coupling with a cartridge identification chip of the vaporizer cartridge. The skeleton may be coupled with the cartridge interface. The skeleton may be configured to secure the cartridge interface inside the shell.

Abstract: The present disclosure provides a connector and a terminal. The connector includes a terminal. The terminal includes an insert portion. The insert portion includes a front frame portion, a rear frame portion, a top plate portion, an arc discharge contact member and a primary contact member. The arc discharge contact member includes a bottom plate portion and a top elastic arm. The bottom plate portion connects the front frame portion and the rear frame portion and is spaced apart from the top plate portion in an up-down direction. The top elastic arm extends from the rear frame portion to the front frame portion and is positioned below the top plate portion. The arc discharge contact member is positioned in front of the primary contact member. The primary contact member includes a first elastic arm and a second elastic arm. The first elastic arm extends from the rear frame portion to the front frame portion and is adjacent between the bottom plate portion and the top elastic arm.

Abstract: A quantitative shear wave elasticity imaging method and system relates to the technical field of medical ultrasound imaging. The provided ultrasound quantitative elasticity imaging method and system are based on a sliding window linear fitting strain and use a two-dimensional linear fitting shear wave velocity detection algorithm, and thus, the anti-noise capability is stronger, and the result is more reliable. Moreover, where the load of an ultrasonic front-end storage and transmission module is not additionally in-creased, global ultrasonic quantitative elasticity imaging is realized, thereby significantly reducing the design difficulty of the ultrasound quantitative elasticity imaging system and the device cost.

Abstract: A wire-line core drilling tool includes an outer barrel assembly and an inner barrel assembly. The inner barrel assembly is provided with an elastic clamp positioning mechanism, an in-place reporting and core blockage alarm mechanism, a single-action mechanism, a core barrel check valve mechanism, a core barrel and a core-breaking mechanism. The elastic clamp positioning mechanism adopts a multi-point hinged mode. The in-place reporting and core blockage alarm mechanism is integrally formed. The single-action mechanism adopts a cooperating structure of an upper polycrystalline diamond compact (PDC) bearing, a lower PDC bearing and a tungsten carbide (TC) bearing arranged in the middle. The outer barrel assembly is provided with an elastic clamp retaining head, an elastic clamp chamber, an upper reamer, an outer barrel, a lower reamer and a drill bit. A ring base is arranged, and a centralizing ring is arranged.

Abstract: A directly connected drill pipe applicable to extreme conditions includes a tool joint pin and a tool joint box, where an external pipe section is located on an external side of a threaded section of the tool joint pin, and an annular groove is formed between the external pipe section and the threaded section of the tool joint pin. An insertion section of the tool joint box can be inserted into the annular groove in a matched manner. A main shoulder of the tool joint pin is located at an end of the external pipe section, a main auxiliary shoulder of the tool joint pin is located on a bottom surface of the annular groove, and an auxiliary shoulder of the tool joint pin is located at a small end of the tool joint pin. The tool joint box has three corresponding shoulders which form a 3-stage sealing with the tool joint pin.

Abstract: A wire-line core drilling tool includes an outer barrel assembly and an inner barrel assembly. The inner barrel assembly is provided with an elastic clamp positioning mechanism, an in-place reporting and core blockage alarm mechanism, a single-action mechanism, a core barrel check valve mechanism, a core barrel and a core-breaking mechanism. The elastic clamp positioning mechanism adopts a multi-point hinged mode. The in-place reporting and core blockage alarm mechanism is integrally formed. The single-action mechanism adopts a cooperating structure of an upper polycrystalline diamond compact (PDC) bearing, a lower PDC bearing and a tungsten carbide (TC) bearing arranged in the middle. The outer barrel assembly is provided with an elastic clamp retaining head, an elastic clamp chamber, an upper reamer, an outer barrel, a lower reamer and a drill bit. A ring base is arranged, and a centralizing ring is arranged.

Abstract: The disclosure relates to compositions comprising and methods for chemical modification of single guide RNA (sgRNA), tracrRNA and/or crRNA used individually or in combination with one another or Cas system components. Compositions comprising modified ribonucleic acids have been designed with chemical modification for even higher efficiency as unmodified native strand of sgRNA. Administration of modified ribonucleic acids will allow decreased immune response when administered to a subject, increased stability, increased editing efficiency and facilitated in vivo delivery of sgRNA via various delivery platforms. The disclosure also relates to methods of decreasing off-target effect of CRISPR and a CRISPR complex.

Abstract: An electrical connector is provided and includes an insulative housing, a plurality of conductive terminals and a metal shell. The insulative housing includes a base portion, a mating tongue protruding forwardly from the base portion and a terminal fixing portion positioned behind the base portion; a glue receiving groove is provided between the base portion and the terminal fixing portion to allow a glue to fill therein; the terminal fixing portion is provided with at least one fencing portion at a side of the terminal fixing portion adjacent to the glue receiving groove, the fencing portion is formed with a hollow recessed groove therein.

Abstract: Disclosed is a liquid chemical vapor recovery device, a wet stripping device, a photoresist stripping process and a method for manufacturing a thin film transistor-liquid crystal display using the same. The liquid chemical vapor recovery device comprises: an exhaust pipe for discharging a gas in a processing chamber for wet processing with a liquid chemical, the gas comprising a vapor of the liquid chemical; and a reflux pipe for refluxing the liquid chemical condensed in the exhaust pipe to a liquid chemical storage tank, the reflux pipe having an inlet connected to the exhaust pipe and an outlet connected to the liquid chemical storage tank, wherein, at least a part of the exhaust pipe positioned upstream of the inlet of the reflux pipe is formed as a pipe segment with a rugged inner surface.

Abstract: An in-vehicle independent sound field system and control system based on mini-speakers are provided. The system includes a mini-speaker array installed in front of a user and a mini-speaker installed near the user's ear. Each mini-speaker is provided with a coupling rear cavity, and the mini-speaker near the user's ear is provided with a sound guide front cavity. A controller is provided to control the mini-speaker array to perform an intermediate-and-high frequency directional replay, and control the mini-speakers near the user's ear to perform low-frequency replay and autonomous counterbalance, to solve the problem that a speaker array cannot be installed with a traditional in-vehicle speaker size and that a low-frequency effect is bad when merely using a speaker array to control sound direction, Besides, when different sources are being played, they rarely interfere with each other, thereby improving personalized requirements for sound and user experience of users in a vehicle.

Abstract: A light emitting diode (LED) package includes an aluminum nitride (AlN) substrate, a patterned copper layer with polished portions formed on a first side of the substrate, at least one LED disposed over the polished portions of the patterned copper layer, covers incorporating one or more phosphors disposed over the LEDs, a silicone fill and dam walls. The silicone fill, which is bordered by silicone dam walls and silicone fill surfaces, is formed in between the LEDs and covers. In some embodiments, the silicone fill does not extend over the covers. The silicone fill surface and the ends of the dam walls are substantially planar with an end of the substrate. The LED package can also include a thermal pad disposed on an opposite side of the substrate. Embodiments also include methods for make the LED package.

Abstract: The present disclosure relates to compositions and methods for modifying a gene sequence, and for systems for deliverying such compositions. For example, the disclosure relates to modifying a gene sequence using a CRISPR-Cas9 or other nucleic acid editing system, and methods and delivery systems for achieving such gene modification, such as viral or non-viral delivery systems.