Abstract: In order to overcome the problems that the existing arc-shaped lock has a complex structure and is difficult to accurately adjust angles, the application provides an arc-shaped lock, comprising an angle control mechanism and a locking mechanism; the angle control mechanism comprises a first mounting structure and a first sliding mechanism, a second sliding mechanism and a positioning mechanism, and the first mounting structure is used for installing a display module; the locking mechanism comprises a second mounting structure, and the second mounting structure is used for installing another display module; the first sliding mechanism and the second sliding mechanism telescopically extend out of the first mounting structure and abut against the second mounting structure, the positioning mechanism is used for positioning lengths of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure; and the first sliding mechanism and second sliding mechanism are positione

Abstract: The present invention relates to processes for preparing a Compound (1): or a pharmaceutically acceptable salt or solvate thereof. Compound (1) is useful as in many pharmaceutical agents, especially is useful as key intermediate in the synthesis of certain SARS-CoV-2 3CLpro inhibitors.

Abstract: Disclosed are a prodrug of celecoxib represented by Formula I, a preparation method therefor and an application thereof. The compound has proper solubility and is relatively stable under storage conditions. Pharmacokinetic experiments show that celecoxib can be detected in ocular tissues and is distributed in cornea, conjunctiva and aqueous humor, and the celecoxib achieves a relatively high drug concentration and thus the compound of Formula I is an excellent celecoxib prodrug. Moreover, the distribution of control compound SZY1907-P4 is almost not detected, and the concentration of eye drops prepared from the celecoxib in the cornea, conjunctiva and aqueous humor is also relatively low. The compound of Formula I has a remarkable absorption advantage, the drug concentration in the ocular tissues is remarkably higher than those of the celecoxib group and control group SZY1907-P4, and thus the compound can be prepared into liquid preparations, such as eye drops and injections, for inflammatory reactions.

Abstract: A device for measuring a thermal conductivity of high-temperature and high-pressure liquid is provided and includes a probe and a liquid flow channel, the probe radially penetrates through the liquid flow channel, both ends of the probe extend out of the liquid flow channel and are connected to a control system via wires; the control system includes a power supply, a voltmeter, an ammeter, a thermocouple and a flowmeter, which are used for energizing the probe, measuring voltage at both ends of the probe, measuring current flowing through the probe, measuring temperature of and a flow velocity of the liquid, respectively. A measuring method is further provided. The device and the method for measuring the thermal conductivity of high-temperature and high-pressure liquid utilize a principle of heat balance and characteristics of liquid sweeping across a circular tube for measurement when the liquid enters a fully developed section.

Abstract: An antenna is provided. The antenna includes a ground plate; a dielectric layer on the ground plate; and a radiating patch and a microstrip feed line on a side of the dielectric layer away from the ground plate. The radiating patch has a parallelogram shape having a first side connected to the microstrip feed line, a second side opposite to the first side, a third side connecting the first side and the second side, and a fourth side converting the first side and the second side, the third side being opposite to the fourth side. The antenna further includes a gain enhancement structure on at least one of the second side, the third side, or the fourth side.

Abstract: In a solar cell, the back surface of a substrate thereof is provided with alternately distributed emitter zones and back surface field zones. An emitter is formed in each emitter zone, and the emitters are made of boron-doped monocrystalline silicon. A back surface field is formed in each back surface field zone; the back surface fields comprise tunneling oxide layers and polycrystalline silicon layers in stacked distribution, the polycrystalline silicon layers being made of phosphorus-doped polycrystalline silicon, and the tunneling oxide layers being located between a polycrystalline silicon layer and a polycrystalline silicon layer. Positive electrodes are electrically connected to the emitters, and negative electrodes are electrically connected to the back surface fields.

Abstract: An antenna structure includes a substrate, a ground layer, a radiation patch, a first feed structure, and a second feed structure. The radiation patch, the first feed structure, and the second feed structure are located on a first surface of the substrate, and the ground layer is located on a second surface of the substrate. The first surface and the second surface are two surfaces of the substrate facing away from each other. The radiation patch has a slotted structure. In a first direction, the first feed structure and the second feed structure are symmetrically located on both sides of the radiation patch.

Abstract: A positive chemically amplified photoresist of a fused ring aromatic hydrocarbon derivative, a preparation method therefor, and use thereof are provided. A matrix component in the photoresist is a fused ring aromatic hydrocarbon derivative represented by general formula (I) that can be dissolved in organic solvents commonly used in photoresists. The photoresist composition can be prepared to give a uniform film, and a molecular glass serving as the matrix component does not precipitate particles in the film preparation process.

Abstract: An electronic apparatus and a method for displaying an image on a display device are disclosed. The electronic apparatus includes a display device; an image acquisition device configured to acquire a surrounding image of the display device; and a processor configured to: determine a background image of the display device according to the surrounding image; acquire a target range and a target object in the background image; determine a target image according to the background image, the target range and the target object; and control the display device to display the target image, wherein the target image excludes the target object.

Abstract: An enhanced GaN high electron mobility transistor (HEMT) radio-frequency device and a manufacturing method thereof are provided. The enhanced GaN HEMT radio-frequency device includes a substrate, a first AlN interposed layer, a GaN buffer layer, a GaN trench layer, a second AlN interposed layer, an AlGaN barrier layer, a p-AlGaN layer, a metal drain electrode, a metal source electrode, and a metal gate electrode. Under an extremely high vacuum degree, metal Mg is doped and diffused to the AlGaN layer to form the p-AlGaN layer, and the metal Mg further forms a p-n junction with the undoped AlGaN layer, thereby depleting a two-dimensional electron gas (2DEG) under the gate. A HfO2 layer covers the metal Mg to prevent oxidation of the metal Mg.

Abstract: A detection result reading device is provided. The detection result reading device includes a reading device body. The reading device body is provided with a cavity at least capable of accommodating a detection part of a reagent card. A side wall of the cavity is provided with a detection result acquisition device, and the detection result acquisition device is arranged opposite to the detection part of the reagent card. The reading device body is provided with a lifting device for lifting the detection part of the reagent card towards a side of the cavity close to the detection result acquisition device.

Abstract: A negative chemically amplified photoresist of a fused ring aromatic hydrocarbon derivative, a preparation method therefor, and use thereof are provided. A matrix component in the photoresist is a fused ring aromatic hydrocarbon derivative represented by general formula (I) that can be dissolved in organic solvents commonly used in photoresists. The photoresist composition of the present disclosure can be prepared to give a uniform film, and a molecular glass serving as the matrix component is not precipitated in the film preparation process.

Abstract: Provided is an arc-shaped lock and display screen assembly, the arc-shaped lock comprises a first lock body and a second lock body; the first lock body comprises an angle adjusting component, a disengagement set, a locking set and a locking piece, the angle adjusting component is used for adjusting a splicing angle, the angle adjusting component is internally provided with a cavity for accommodating the disengagement set, the locking set is provided in the disengagement set, and the locking piece is arranged on outer wall of the locking set; the second lock body comprises a lock bar, which is provided with a slot, the disengagement set moves relative to the locking set, so that the locking piece moves toward the lock bar under extrusion force of the disengagement set, and is locked in the slot to realize temporary fixation of the first lock body and the second lock body.

Abstract: This application provides a power consumption control method, apparatus, and system for an electric device, and pertains to the field of electronic technologies. In solutions provided in this application, after a power consumption reduction instruction is received, an electric device can be controlled, based on total power consumption of the electric device and remaining electricity of a first power source, to perform a power consumption reduction operation on a target service.

Abstract: Provided are a geological target identification method and apparatus based on image information fusion.

Abstract: A filter package structure includes: a die substrate, a substrate, a solder resist layer, a package layer, and a conductive structure disposed; wherein the solder resist layer is disposed on the substrate, and a plurality of channels are formed in the solder resist layer, each of the channels being provided with a solder; the conductive structure includes a seal wall and a support electrode, the seal wall and one terminal of the support electrode being connected to the substrate via the solder; and the die substrate is provided with a filter, wherein the seal wall is disposed around a periphery of the filter, the die substrate, the substrate and the seal wall enclose to define an enclosed chamber, the support electrode is disposed in the enclosed chamber, and the package layer is disposed on a periphery, far away from the enclosed chamber, of the die substrate.