Abstract: A piston limiting structure, including: a cylinder, a piston, and a flange provided with a limiting piece, the cylinder has a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, and a projection of the piston hole in a penetrating direction is circular. The piston is disposed in the piston hole in a form-fit manner and is slid in the piston hole in a reciprocating manner. A side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston. The limiting piece abuts against the thrust surface.

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 is a sub-Kelvin temperature zone refrigeration mechanism. The sub-Kelvin temperature zone refrigeration mechanism includes a pulse tube refrigeration unit, first pre-cooling heat exchangers, a throttling refrigeration unit, second pre-cooling heat exchangers, an adsorption refrigeration unit, a third pre-cooling heat exchanger and a dilution refrigeration unit. The pulse tube refrigeration unit includes a pulse tube refrigeration part. The throttling refrigeration unit includes a throttling refrigeration part, and the throttling refrigeration part is connected with the adsorption refrigeration unit through the second pre-cooling heat exchangers so as to pre-cool the adsorption refrigeration unit. The adsorption refrigeration unit includes an adsorption refrigeration part, and the adsorption refrigeration part is connected with the dilution refrigeration unit through the third pre-cooling heat exchanger.

Abstract: Provided herein are opioid receptor modulators and pharmaceutical compositions comprising said compounds.

Abstract: A testing device for the internal lateral casting of spatial K-type inclined column grid and the testing method thereof comprises steps: constructing a testing device for the internal lateral casting of spatial K-type inclined column grid; selecting the testing location of the inclined column cross-section; obtaining imaging results of the inclined column cross-section testing locations; determining the concrete quality and taking supplementary testing.

Abstract: The present invention relates to a monocular or multi-ocular camera device including a lens module, a front housing, a rear housing and a fastening mechanism, the front housing having a through hole. The lens module includes a lens module block, a sensor board, and a printed circuit board connected to the sensor board. The fastening mechanism is configured to fix the lens module block passing through the through hole to the front housing. The monocular or multi-ocular camera device of the present invention is highly stable, highly reliable and highly adjustable.

Abstract: The embodiments of the present disclosure provide a detection substrate, a preparation method thereof and a flat panel detector. An orthographic projection of a first electrode on the base substrate is set to be at least partially overlapped with an orthographic projection of an active layer of a thin film transistor on the base substrate, a first protruding part is arranged on a side, close to a corresponding data line, of the first electrode, an orthographic projection of the first protruding part on the base substrate is located between the orthographic projection of the active layer on the base substrate and an orthographic projection of the data line on the base substrate.

Abstract: A propulsion control device of a 3D printing-based tunnel boring machine, includes two propulsion control modules, and each of which includes tunnel support assemblies, a propulsion control assembly and a barrel body, where a propulsion sliding sleeve is arranged on an outer surface, and several tunnel support assemblies are arranged on an outer side of each propulsion sliding sleeve. Support plates on the two propulsion control modules alternately rise to support a 3D printed tunnel pipe. In the propulsion control module with the support plates in a closed state, a propulsion hydraulic cylinder controls a propulsion hydraulic cylinder extending end to contract, so as to pull the propulsion sliding sleeve to a front section of the barrel body; and in the propulsion control module with the support plates in a support state, the barrel body continuously advances relative to the propulsion sliding sleeve.

Abstract: Disclosed is a pullout force measurement test device based on an anchor group effect of a marine pipeline, and a measurement method. The test device includes a support frame, a winch, a lifting plate, an upper hanging rope, a force measuring mechanism mounted on the upper hanging rope, two anchor plate mechanisms, and two lower hanging ropes, where each pair of the lower hanging ropes and the anchor plate mechanisms are located on both sides of the upper hanging rope; each anchor plate mechanism includes a model box, a soil sample filled in the model box, an anchor plate embedded in the soil sample, and a pulley assembly used for adjusting a pullout angle of the anchor plate; one end of each lower hanging rope is connected to the lifting plate, and the other end thereof is connected to the anchor plate of the corresponding anchor plate mechanism.

Abstract: The embodiments of the present disclosure provide a detection substrate, a preparation method thereof and a flat panel detector. An orthographic projection of a first electrode on the base substrate is set to be at least partially overlapped with an orthographic projection of an active layer of a thin film transistor on the base substrate, a first protruding part is arranged on a side, close to a corresponding data line, of the first electrode, an orthographic projection of the first protruding part on the base substrate is located between the orthographic projection of the active layer on the base substrate and an orthographic projection of the data line on the base substrate.

Abstract: A test device and method for studying influence of external load on soil arching effect of shield tunnel, including a test chamber, a tunnel model and a control module. The tunnel model, including segments which are meshed with each other and can move relatively, the tunnel model is installed in the middle of the test chamber, and all sides of the tunnel model is filled with a test soil, the control module, including a set of deceleration motors and a variable cross-section guide rod, the variable cross-section guide rod is inserted into the tunnel model, which can reduce the diameter of the tunnel model, resulting in ground loss and soil arching effect.

Abstract: A test device and method for studying influence of external load on soil arching effect of shield tunnel, including a test chamber, a tunnel model and a control module. The tunnel model, including segments which are meshed with each other and can move relatively, the tunnel model is installed in the middle of the test chamber, and all sides of the tunnel model is filled with a test soil, the control module, including a set of deceleration motors and a variable cross-section guide rod, the variable cross-section guide rod is inserted into the tunnel model, which can reduce the diameter of the tunnel model, resulting in ground loss and soil arching effect.

Abstract: A radiation detector having a plurality of pixels is provided. A respective one of the plurality of pixels includes a base substrate; a thin film transistor on the base substrate; an insulating layer on a side of the thin film transistor away from the base substrate; a photosensor on a side of the insulating layer away from the base substrate; a passivation layer on a side of the photosensor away from the base substrate; a scintillation layer on a side of the passivation layer away from the base substrate; and a reflective layer on a side of the scintillation layer away from the base substrate. The photosensor includes a first polarity layer in direct contact with the passivation layer. All sides of the first polarity layer other than a side internal to the photosensor are entirely in direct contact with the passivation layer.

Abstract: The embodiments of the present disclosure provide a detection substrate, a preparation method thereof and a flat panel detector. An orthographic projection of a first electrode on the base substrate is set to be at least partially overlapped with an orthographic projection of an active layer of a thin film transistor on the base substrate, a first protruding part is arranged on a side, close to a corresponding data line, of the first electrode, an orthographic projection of the first protruding part on the base substrate is located between the orthographic projection of the active layer on the base substrate and an orthographic projection of the data line on the base substrate.

Abstract: A radiation detector having a plurality of pixels is provided. A respective one of the plurality of pixels includes a base substrate; a thin film transistor on the base substrate; an insulating layer on a side of the thin film transistor away from the base substrate; a photosensor on a side of the insulating layer away from the base substrate; a passivation layer on a side of the photosensor away from the base substrate; a scintillation layer on a side of the passivation layer away from the base substrate; and a reflective layer on a side of the scintillation layer away from the base substrate. The photosensor includes a first polarity layer in direct contact with the passivation layer. All sides of the first polarity layer other than a side internal to the photosensor are entirely in direct contact with the passivation layer.

Abstract: A camera module structure, comprising: an upper housing (1) and a lens (2). The upper housing (1) comprises an accommodating part (11); the lens (2) is mounted in the accommodating part (11). The structure further comprises a circlip (3). The circlip (3) comprises a press part (31) and a clamp part (32). A guide groove (12) is provided on the upper housing (1). A clamp groove (21) is provided on the external peripheral wall of the lens (2). The clamp part (32) is engaged in the clamp groove (21) of the lens (2) along the guide groove (12). The camera module structure is convenient to assemble, and compared with screw connection, adhesive connection and other modes, problems such as vibration, falling-off and fracture would not happen, the imaging quality is good, and the service life is long.

Abstract: A portable pneumatic loading system for simulating the operation of a subway train is provided, comprising a control cabinet, an powered air station and an air cylinder, wherein a proportional directional valve is disposed between the control cabinet and the powered air station, a control cabinet is connected to the powered air station through an air inlet pipe, and the powered air station is connected to the air cylinder through a hose; a PLC, a switching power supply and a guide rail are arranged in the control cabinet, with the PLC and the switching power supply being connected through signal lines to a wiring terminal fixed on the guide rail; a frequency regulating knob, an emergency stop switch, a main start button, a power start button and a power indicator are embedded in five through holes formed on a door of the control cabinet, respectively; a signal line led out from the top of the control cabinet is connected to the proportional directional valve; and, the air cylinder is connected to the proporti

Abstract: A system includes at least one computer-readable storage medium storing a set of instructions and at least one processor in communication with the at least one computer-readable storage medium. When executing the instructions, the system is directed to receive, from a user of a second wireless network, a request to transmit second wireless network data over a first wireless network and determine a protocol based on one or more parameters associated with the first wireless network and the second wireless network for transmitting the data. The protocol may indicate a resource allocation between second wireless network data transmission and first wireless network data transmission. The system is further directed to obtain information related to a first spectrum of the first wireless network for transmitting the second wireless network data based on the protocol and transmit, to the user, the information related to the first spectrum.

Abstract: The system obtains packets-to-be-compressed at a compressor at a transmitter that transmits packets through a channel to a decompressor at a receiver. It also obtains cross-layer information regarding a state of the channel from lower-layer network entities in the transmitter. The system then determines whether to request feedback from the decompressor based on a predetermined policy, and requests and receives feedback from the decompressor based on the determination. The system uses the cross-layer information and any received feedback to estimate a state of the channel and the decompressor. The system also determines a compression level based on a compression policy and the estimations for the state of the channel and the decompressor. The system generates the packets-to-be-transmitted by selectively compressing the headers of the packets-to-be-compressed based on the determined compression level.

Abstract: A system includes at least one computer-readable storage medium storing a set of instructions and at least one processor in communication with the at least one computer-readable storage medium. When executing the instructions, the system is directed to receive, from a user of a second wireless network, a request to transmit second wireless network data over a first wireless network and determine a protocol based on one or more parameters associated with the first wireless network and the second wireless network for transmitting the data. The protocol may indicate a resource allocation between second wireless network data transmission and first wireless network data transmission. The system is further directed to obtain information related to a first spectrum of the first wireless network for transmitting the second wireless network data based on the protocol and transmit, to the user, the information related to the first spectrum.