Abstract: Disclosed are a scroll compression mechanism and a scroll compressor. The scroll compression mechanism comprises a non-orbiting scroll member, an orbiting scroll member, an oil supply passage, an adjusting valve and a fluid pressure passage comprising a first end and a second end. The first end is in fluid communication with a first pressure source to apply a first pressure to the movable valve body, the second end is in fluid communication with a second pressure source to apply a second pressure to the movable valve body, so that based on a pressure difference between the first and second pressures the movable valve body can selectively move toward a first direction of reducing a flow cross-sectional area of the oil supply passage and toward a second direction of increasing the flow cross-sectional area of the oil supply passage, thereby adjusting an oil supply amount to the scroll compression mechanism.

Abstract: A lithium ion battery electrolyte with improved wettability and a lithium ion battery is disclosed. The electrolyte includes 10% to 17% of lithium salt, 1.8% to 3.7% of film-forming additive, 0.5% to 10% of wetting additive with the balance being solvent. The wetting additive is fluorobenzene and a silanyl fluorobenzene compound, with a mass fraction of fluorobenzene in the electrolyte being at least 3% and a mass fraction of the silanyl fluorobenzene compound being not less than 1%. Two types of silanyl fluorobenzene compounds provided are mainly composed of silanyl groups which absorb HF and reduce surface tension and fluorophenyl groups which reduce surface tension. By using the silanyl fluorobenzene compounds together with fluorobenzene, a problem of performance deviation caused by generation of HF by fluorobenzene at high temperature can be solved, and wettability of the electrolyte can also be provided.

Abstract: Provided is a speaker, including frame, vibration unit, and magnetic circuit unit driving the vibration unit and having magnetic gap, the vibration unit including diaphragm fixed to the frame, voice coil component fixed to the diaphragm and driving the diaphragm, and lower voice diaphragm component supporting the voice coil component. The voice coil component includes voice coil inserted in the magnetic gap and holder fixed to the diaphragm and the voice coil, the voice coil includes first and second voice coil portions. The first voice coil portion is arranged close to the lower voice diaphragm component and is fixed to the lower voice diaphragm component through the holder. The first voice coil portion includes two first sides and second side connecting thereto, and the second voice coil portion protrudes away from the second side. The voice coil component has greater circumference than the racetrack voice coil, enabling better acoustic performance.

Abstract: A gas-fired heating device and a gas-fired clothes dryer, where the gas-fired clothes dryer includes the gas-fired heating device, and the gas-fired heating device includes a burner and an igniter, where the burner includes a body and a gas collecting plate, the gas collecting plate is concave upwards to form a gas collecting chamber, and the body has a combustion end provided with a nozzle; the gas collecting plate is connected with the combustion end, and the gas collecting plate is located above the nozzle, so that gas ejected from the nozzle enters the gas collecting chamber; the igniter is provided with an ignition end located outside the nozzle, and the ignition end extends into the gas collecting chamber.

Abstract: Systems and methods for uploading tenant code to a multi-tenant system. Tenant Java source code is sent to the multi-tenant system over an MDL interface, and stored in a repository of the multi-tenant system as source code metadata. The tenant code may be executed to connect a first repository and a second repository, transfer data of a source document from the first repository to the second repository, and create a temporary copy of the source document in the target repository with the data of the source document transferred from the first repository.

Abstract: Systems and methods for uploading tenant code to a multi-tenant system. Tenant Java source code is sent to the multi-tenant system over an MDL interface, and stored in a repository of the multi-tenant system as source code metadata. The tenant code may be executed to connect a source repository and a target repository, transfer data of a source document from the source repository to the target repository, and create a document in the target repository with the data of the source document transferred from the source repository.

Abstract: A multi-row ultrasonic imaging apparatus and an ultrasonic imaging instrument are disclosed. The multi-row ultrasonic imaging apparatus includes a housing, and a first ultrasonic transducer, a second ultrasonic transducer, and an adjustment mechanism that are installed in the housing. Ultrasonic waves emitted by the first ultrasonic transducer and the second ultrasonic transducer can intersect to form a confocal point. At least one of the first ultrasonic transducer and the second ultrasonic transducer is connected to the adjustment mechanism to move relative to the housing under the action of the adjustment mechanism, so as to adjust the position of the confocal point.

Abstract: Disclosed are a scroll compression mechanism and a scroll compressor. The scroll compression mechanism comprises a non-orbiting scroll member, an orbiting scroll member, an oil supply passage, an adjusting valve and a fluid pressure passage comprising a first end and a second end. The first end is in fluid communication with a first pressure source to apply a first pressure to the movable valve body, the second end is in fluid communication with a second pressure source to apply a second pressure to the movable valve body, so that based on a pressure difference between the first and second pressures the movable valve body can selectively move toward a first direction of reducing a flow cross-sectional area of the oil supply passage and toward a second direction of increasing the flow cross-sectional area of the oil supply passage, thereby adjusting an oil supply amount to the scroll compression mechanism.

Abstract: Provided is a conscious animal ultrasonic neural regulation device, including a pulse signal generation module, a transducer module and a fixing module. The pulse signal generation module is configured to generate a pulse signal with high energy. The ultrasonic transducer module is configured to convert the pulse signal into an ultrasound. The fixing module includes an upper fixing module and a lower fixing module. The upper fixing module is configured to fix the ultrasonic transducer module, and the lower fixing module is configured to be fixed on an animal neural regulation target point. The upper fixing module and the lower fixing module are connected by a connecting component. The conscious animal neural regulation device of the present disclosure can perform accurate ultrasonic stimulation on a cerebral cortex and subcortex of the animal, thereby exploring and verifying the stimulation effect of the ultrasound on the animal, which is easy in operation and convenient in use.

Abstract: Provided is a speaker, including frame, vibration unit, and magnetic circuit unit driving the vibration unit and having magnetic gap, the vibration unit including diaphragm fixed to the frame, voice coil component fixed to the diaphragm and driving the diaphragm, and lower voice diaphragm component supporting the voice coil component. The voice coil component includes voice coil inserted in the magnetic gap and holder fixed to the diaphragm and the voice coil, the voice coil includes first and second voice coil portions. The first voice coil portion is arranged close to the lower voice diaphragm component and is fixed to the lower voice diaphragm component through the holder. The first voice coil portion includes two first sides and second side connecting thereto, and the second voice coil portion protrudes away from the second side. The voice coil component has greater circumference than the racetrack voice coil, enabling better acoustic performance.

Abstract: A panoramic video generation method and a related apparatus are disclosed. A platform configured to generate a panoramic video receives a first video stream; and decompresses the first video streams, and determines a region of interest on the shooting site based on the plurality of decompressed first video streams. Then, the platform notifies at least one first video collection end that is capable of collecting the region of interest to compress collected video streams by using a second compression rate less than the first compression rate, to improve quality of the video streams of the region of interest. After receiving second video streams that are separately sent by the at least one first video collection end and that are compressed by using the second compression rate, the platform decompresses the second video streams, and generates a first panoramic video based on the plurality of decompressed second video streams.

Abstract: An ultrasound guided puncture device and an ultrasound guided puncture apparatus are disclosed. The ultrasound guided puncture device includes a puncture needle tube and an ultrasound transducer. One end of the puncture needle tube has a puncture needle head, and the ultrasonic transducer is housed in the puncture needle tube and extends to the puncture needle head. The ultrasonic transducer includes multiple ultrasonic array elements for transmitting and receiving ultrasonic waves, and the multiple ultrasonic array elements are arranged at the puncture needle head. In actual use, electronic scanning imaging is performed through the multiple ultrasound array elements, hence a wide imaging range. It can effectively recognize the structure of the tissue in front of the puncture needle head, thereby facilitating the planning of the best puncture path.

Abstract: A multi-row ultrasonic imaging apparatus and an ultrasonic imaging instrument are disclosed. The multi-row ultrasonic imaging apparatus includes a housing, and a first ultrasonic transducer, a second ultrasonic transducer, and an adjustment mechanism that are installed in the housing. Ultrasonic waves emitted by the first ultrasonic transducer and the second ultrasonic transducer can intersect to form a confocal point. At least one of the first ultrasonic transducer and the second ultrasonic transducer is connected to the adjustment mechanism to move relative to the housing under the action of the adjustment mechanism, so as to adjust the position of the confocal point.

Abstract: The present disclosure relates to a voice coil, a method for winding the voice coil, and a speaker having the voice coil. The voice-coil winding is wound from an inner side to an outer side of the voice coil to form an N-layer structure. Each layer is wound to form a multi-coil structure. A winding switching portion is disposed between at least one group of neighboring two layers. Two terminals of the winding switching portion are respectively located at the top and the bottom of the voice coil. One terminal of the winding switching portion is connected to a winding ending terminal of an inner side one of the neighboring two layers, and the other terminal of the winding switching portion is connected to a winding starting terminal of the outer side one of the neighboring two layers.

Abstract: A speaker includes a holder and a vibration unit and a magnetic circuit unit fixed and held at the holder. The vibration unit includes: a first diaphragm and an elastic support located at an end of the voice coil facing away from the first diaphragm and elastically supporting the voice coil. The elastic support includes a flexible circuit board and a second diaphragm fixed and held at one side of the flexible circuit board facing away from the voice coil. The flexible circuit board is sandwiched between the voice coil and the second diaphragm and includes an upper surface fixed to the voice coil and a lower surface opposite to the upper surface. The second diaphragm is fixed to the lower surface by a binder, and the lower surface is recessed towards the upper surface to form a binder accommodation groove.

Abstract: The present disclosure relates to the field of sound production, and provides a diaphragm including a dome and a suspension surrounding the dome. The dome includes a first surface fixedly connected to the suspension, and a second surface disposed opposite to the first surface and facing away from the suspension. The dome is provided with a through hole in communication with the first surface and the second surface, and the through hole is adjacent to edges of the dome but does not reach the edges of the dome. The present disclosure further provides a speaker including the diaphragm. The diaphragm and the speaker according to the present disclosure have the advantages of ensuring the strength of the dome while ensuring the leakage of the glue inside the speaker.

Abstract: A speaker includes a frame, and a vibration system and a magnetic circuit system that are fixed on the frame. The vibration system includes a first vibration diaphragm fixed to the frame, a voice coil disposed on a side of the first vibration diaphragm and configured to drive the first vibration diaphragm to vibrate to produce sound, and an elastic support part for the elastic support coil. The elastic support part includes a flexible printed circuit board connecting the voice coil to an external circuit.

Abstract: The application discloses five polymorph forms B, P, F, J, O of (4-((R)-((2S,5R)-4-(3-fluorobenzyl)-(2,5-dimethylpiperazine-1-yl)(3-hydroxyphenyl)methyl)phenyl)(4-methylpiperidine-1-yl)methanone dihydrochloride, preparation methods thereof and application thereof in the manufacture of a medicament for preventing or treating a mood disorder or a disease related to a ? opioid receptor.

Abstract: Provided is an ultrasonic transducer and a preparation method thereof. The ultrasonic transducer includes a housing. A piezoelectric layer is disposed in the housing and includes at least two piezoelectric array elements. A frequency interval between the piezoelectric array elements is 50 kHz to 1.2 MHz. An acoustic lens is disposed at a front end of the piezoelectric layer and is used for ensuring that the piezoelectric array elements having different frequencies have a common focus.