Abstract: The present disclosure provides a pump body assembly, a heat exchange apparatus, a fluid machine and an operating method thereof. The pump body assembly includes a piston, a shaft, a piston sheath, and a cylinder. The shaft drives the piston to rotate and reciprocate within the piston sheath while rotating. The piston sheath is located in the cylinder, and a compression chamber is defined between an outer circumferential wall of the piston and an inner wall of the cylinder. A pressure relief recess is defined in the outer circumferential wall of the piston or the inner wall of the cylinder at a position corresponding to the compression chamber.

Abstract: Disclosed are a low-cost high-efficiency drip irrigation system for a cotton field and a use method thereof. The drip irrigation system for a cotton field includes a filtering device and a water supply device; wherein the filtering device adopts different types of single filtering devices or combined filtering devices according to different water source types; the water supply device includes multiple stages of main pipes, submain pipes and laterals; the laterals (a drip irrigation tape with labyrinth on one side or a drip irrigation tape inlaid with emitters inside) are laid on the surface of the ground and located below a mulch film. The drip irrigation system adopts the design of large flow (1.5-3.4 L/h), slightly larger pipe diameter (>75 mm), low water pressure (operating pressure of drip irrigation tape being 0.03-0.07 MPa) and suitable drip irrigation uniformity (80%-90%).

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: The invention relates to an optoelectronic system. The optoelectronic system includes an optoelectronic probe operably attached to a target region of a subject; and an electronic module coupled with the optoelectronic probe for wireless, real-time, and continuous measurements of physiological information of the subj ect.

Abstract: A charging and patrol replacement system for air-land unmanned aerial vehicles and a method thereof. In the system, an unmanned aerial vehicle in flight continuously detects a remaining battery power thereof, and when the remaining battery power is lower than a threshold, the unmanned aerial vehicle generates and transmits a return-to-home signal to an unmanned ground vehicle, the unmanned ground vehicle continuously transmits a coordinate of a power supply vehicle to the unmanned aerial vehicle in flight, to guide the unmanned aerial vehicle in flight to return to the power supply vehicle for charging, and the unmanned ground vehicle then activates another unmanned aerial vehicle to synchronize patrol data with the unmanned aerial vehicle which is returned to charge, so as to replace the returned unmanned aerial vehicle to perform patrol, thereby achieving the technical effect of improving the sustainability and synergy of the air-land unmanned vehicles.

Abstract: A two-channel burner includes a pulverized coal supply mechanism, a transition channel, an inner secondary air guide tube, an outer secondary air guide tube, a combustion stabilizing chamber, and a flow smoothing chamber. The outer secondary air guide tube, the combustion stabilizing chamber, and the flow smoothing chamber are sequentially connected to form a burner body. The pulverized coal supply mechanism passes through an interior of the burner body. The transition channel is fitted over the pulverized coal supply mechanism. The inner secondary air guide tube is disposed between the transition channel and the outer secondary air guide tube and forms an inner secondary air passage together with the transition channel, and forms an outer secondary air passage together with the outer secondary air guide tube. An outlet end of the inner secondary air guide tube is formed to have a flared opening.

Abstract: A method for achieving sintering of ceramics at room temperature is disclosed. The method includes steps of: providing ceramic green body; placing the ceramic green body into a sealed container containing water vapor to cause the ceramic green body to soak up the water vapor to obtain an aqueous ceramic green body; removing the aqueous ceramic green body from the sealed container, and connecting a power supply to the aqueous ceramic green body; applying a voltage to the aqueous ceramic green body; and increasing the voltage to a predetermined voltage value to cause a surface discharge or an internal discharge to occur on the aqueous ceramic green body, and stopping the power supply after a predetermined time, thereby obtaining a ceramic. A ceramic formed by the method is also disclosed.

Abstract: An electrical connection device includes a first connector and a second connector. The first connector includes an insulative body and a plurality of first terminals provided to the insulative body, the insulative body has an insertion groove, a first insertion opening which is communicated with the insertion groove and toward a first direction, a second insertion opening which is communicated with the insertion groove and toward a second direction and a stopping block which is positioned between the first insertion opening and the second insertion opening, the stopping block has a first stopping face which faces the first direction and a second stopping face which faces the second direction.

Abstract: Provided is a method for extracting a video segment, including: acquiring a boundary value of content of a video, wherein the boundary value includes an upper boundary, a lower boundary, a left boundary, and a right boundary; acquiring a plurality of first segments by performing key frame segmentation on the video; detecting an upper boundary of subtitles in each of the plurality of first segments; detecting a face position in each of the plurality of first segments; selecting, from the plurality of first segments, a second segment in which the face position satisfies a preset condition; and acquiring a third segment without subtitles by cropping the second segment based on an upper boundary of subtitles in the second segment.

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: The present invention provides new inhibitors of LRRK2/PP1 interaction. The present invention relates to these inhibitors for use as medicament and more particularly to methods and pharmaceutical compositions for the treatment of neurodegenerative disorders, more particularly ?-synucleinopathies.

Abstract: A method and an apparatus for video frame processing are provided. The method includes: obtaining a convolutional neural network (CNN) feature and a local feature of a target video frame; performing dimension reduction on the CNN feature to obtain a CNN feature with a reduced dimension of the target video frame; obtaining a first video frame from multiple sample video frames, a distance between a CNN feature with a reduced dimension of the first video frame and the CNN feature with the reduced dimension of the target video frame meets a first preset condition; obtaining a local feature of the first video frame; calculating a matching degree between the local feature of the first video frame and the local feature of the target video frame; determining the first video frame as a duplicate video frame of the target video frame if the matching degree meets a second preset condition.

Abstract: Fabrication method of a semiconductor device is provided. The method includes forming an etch layer on the substrate, forming a first transitional layer and a first barrier layer on the etch layer, forming first islands on the first transitional layer by patterning the first barrier layer, forming first trenches in the first transitional layer to expose the etch layer, transferring the pattern of the first trenches into the etch layer and removing the first island, forming a second transitional layer and a second barrier layer on the etch layer and the first trenches, forming second islands on the second transitional layer by patterning the second barrier layer, forming second trenches in the second transitional layer to expose the etch layer, and transferring the pattern of the second trenches into the etch layer.

Abstract: A method and apparatus for video live streaming process are provided. The method may include obtaining a feature image preset for a service process, the feature image being an image block that identifies the service process, obtaining a video screenshot from a video live streaming data stream according to a screenshot interval, detecting whether the feature image exists in the video screenshot, and outputting the video screenshot based on the feature image being detected in the video screenshot.

Abstract: An electrical connection device includes a first connector and a second connector. The first connector includes an insulative body and a plurality of first terminals provided to the insulative body, the insulative body has an insertion groove, a first insertion opening which is communicated with the insertion groove and toward a first direction, a second insertion opening which is communicated with the insertion groove and toward a second direction and a stopping block which is positioned between the first insertion opening and the second insertion opening, the stopping block has a first stopping face which faces the first direction and a second stopping face which faces the second direction.

Abstract: A method for location reminder and an electronic device are disclosed. The method includes extracting a target voiceprint feature from a voice configured for searching for a terminal; determining whether the target voiceprint feature meets a preset condition in relation to a preset voiceprint feature, in response to the target voiceprint feature unmatching with the preset voiceprint feature; detecting whether the terminal is located at a preset location in response to the target voiceprint feature meeting the preset condition in relation to the preset voiceprint feature; and triggering a location reminder in a preset manner for reminding a user where the terminal is, in response to the terminal being located at the preset location.

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: Semiconductor device is provided. The semiconductor device includes a base substrate and a first dielectric layer on the base substrate. The first dielectric layer contains a first trench and a second trench passing therethrough, and a width of the second trench is larger than a width of the first trench. The semiconductor device further includes a first gate dielectric layer and a first gate electrode in the first trench. A first recess is on the first gate dielectric layer between the first gate electrode and the first dielectric layer. The semiconductor device further includes a second gate dielectric layer and a second gate electrode in the second trench. A second recess is on the second gate dielectric layer between the second gate electrode and the first dielectric layer. The semiconductor device further includes a first protection layer in the first recess and a second protection layer in the second recess.

Abstract: Provided in the present application are a recombinant sendai virus vector vaccine expressing immunodominant antigens of Mycobacterium tuberculosis, and can be used as therapeutic and preventive antituberculosis vaccine.

Abstract: Fabrication method of a semiconductor device is provided. The method includes forming an etch layer on the substrate, forming a first transitional layer and a first barrier layer on the etch layer, forming first islands on the first transitional layer by patterning the first barrier layer, forming first trenches in the first transitional layer to expose the etch layer, transferring the pattern of the first trenches into the etch layer and removing the first island, forming a second transitional layer and a second barrier layer on the etch layer and the first trenches, forming second islands on the second transitional layer by patterning the second barrier layer, forming second trenches in the second transitional layer to expose the etch layer, and transferring the pattern of the second trenches into the etch layer.