Abstract: A testing device for mechanical properties of a spray anchor net support system, comprising a main frame (100), a lifting and transporting mechanism (200), a mechanical testing mechanism, a testing platform (500), and a monitoring mechanism (600). The lifting and transporting mechanism (200) is arranged on the main frame (100): the testing platform (500) comprises a mold set and a support assembly to be tested (530); the mold set is movably arranged on the main frame (100), and said support assembly (530) is arranged at the bottom end of the mold set, the mechanical testing mechanism is arranged corresponding to said support assembly (530) and is used for implementing a dynamic impact property test or a static mechanical property test on said support assembly (530); and the monitoring mechanism (600) is communicatively connected to the testing platform (500).

Abstract: A method and apparatus are provided for determining the pumping rate to improve proppant placement efficiency. The method includes: acquiring proppant mesh size, bulk density, carrier fluid density and viscosity at reservoir temperature; determining the fracture length from the wellbore to the tip and average fracture width; and obtaining a preset proppant concentration. These parameters are input into a calculation model to compute the pumping rate. The method enables accurate pumping rate determination and enhances placement efficiency.

Abstract: A method and apparatus for rock hydraulic fracturing under resonant excitation are disclosed. The method includes: obtaining excitation frequency and strain time-series data of a target rock sample based on a simulated pore diameter; determining the resonant frequency under the pore diameter influence; identifying the fracture initiation pressure and orientation under the resonant frequency and a preset excitation duration; and formulating a fracture induction scheme accordingly. This approach enables accurate characterization of fracture initiation conditions and improves hydraulic fracturing performance in unconventional reservoirs.

Abstract: The present application discloses a method and device for controlling perforation plugging operations. The method comprises: acquiring the pre-plugging fracturing fluid displacement and the target diversion pressure for a perforated interval; invoking a plugging ball quantity model to calculate the target number of plugging balls; computing the theoretical diversion pressure based on the post-plugging displacement and ball quantity; adjusting the post-plugging displacement when the theoretical pressure does not exceed the target pressure until it does; performing the plugging operation using the determined ball quantity and adjusted displacement; determining whether the plugging is effective by comparing the bottomhole pressure difference before and after the operation with the target diversion pressure. This method enables accurate determination of the number of plugging balls and fluid displacement after plugging, thereby ensuring that the fracturing operation meets the designed requirements.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: A mold and a method for forming special-shaped magnetic steel. The mold includes a powder filling device including mold cavities, each including an opening at one end and having a first preset shape; a powder distribution device including a powder distribution area in which powder distribution channels are provided and penetrates through the powder distribution device along a first direction parallel to a height direction of the powder distribution device, and each has a second preset shape same ass the first preset shape, positions of the powder distribution channels corresponding to positions of the mold cavities; and a cover plate configured to close the mold cavities. The formed workblank is subjected to reinforced molding in the orientation treatment process, the molding density and the orientation degree of the magnetic steel is improved, and a special-shaped magnetic steel product with high remanence and high coercivity is obtained.

Abstract: A chemical compound shown in formula (I) below and an isomer thereof or a pharmaceutically acceptable salt thereof. The compound improves THR-? agonistic activity while also improving selectivity for THR-?, thereby improving pharmaceutical quality.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: An ultrathin device, manufacturing method therefor and use thereof. The method includes: granulating a mixture containing raw material powder, an adhesive and a solvent into particles by spray drying to obtain first precursor, the raw material powder including metal material powder and/or ceramic material powder, a surface mean diameter of the raw material powder ranging from 1 ?m to 15 ?m, a mass ratio of the raw material powder to the adhesive ranging from 100:1 to 100:10, a surface mean diameter of the first precursor ranging from 40 ?m to 80 ?m, and flowability of the first precursor being lower than 30 s/50 g; performing shaping process on the first precursor to obtain second precursor having a preset shape; and performing heat treatment on the second precursor to obtain the ultrathin device with a thickness smaller than or equal to 1 mm. The thickness is reduced without having a significant impact on the mechanical properties.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.

Abstract: A powder distributing device for preparing sheet-shaped magnets and a powder distributing method thereof are provided. The powder distributing device includes a mold, a powder feeding mechanism, and a vibrating mechanism. The mold includes a mold body and a screen disposed above the mold and connected to the mold body. The screen sifts magnetic powder into at least one mold cavity of the mold body. The powder feeding mechanism feeds the magnetic powder to the screen. The vibrating mechanism is connected to the mold body The vibrating mechanism drives the mold body and the screen to vibrate together, so that the magnetic powder on the screen is evenly sifted into the mold body and filled to a predetermined density, which improves uniformity of powder distribution in the at least one mold cavity during a molding process, thereby improving performance and consistency of the sheet-shaped magnets.

Abstract: A process for producing para-xylene and ethylbenzene from C8 aromatics containing ethylbenzene includes the steps of sending C8 aromatics containing ethylbenzene to an ethylbenzene liquid-phase adsorption separation device, wherein a suction liquid containing ethylbenzene and a suction residual liquid are obtained after the adsorption separation, and the desorbents in the suction liquid and the suction residual liquid are removed to obtain ethylbenzene and a suction residual oil; sending the suction residual oil to a para-xylene adsorption separation device, and unadsorbed components are discharged as a raffinate from the adsorbent bed; the adsorbent bed is rinsed with a desorbent to desorb the para-xylene therein and obtain an extract; the desorbents in the extract and the raffinate are respectively removed to obtain para-xylene and a raffinate oil; sending the raffinate oil to a xylene isomerization device to carry out xylene isomerization, and the isomerization product is fractionated.

Abstract: A method for constructing a real-geographic-space scene in real time based on a panoramic-video technique is provided. By using a measuring robot and the attitude sensors, accurately determining the geographic coordinates and the attitudes of the cameras, where the cameras may be installed in a fixed or stringing manner, where in the fixing type a plurality of neighboring videos at the same moment undergo orthographic correction and splicing, and in the stringing type the cameras are installed to a guiding device and may locally, independently and quickly move and shoot, and the videos of the neighboring cameras are spliced in real time; and fusing the videos, the geographic coordinates and the environment sounds that satisfy the delay time, to form a scene video streaming.

Abstract: A method for constructing a real-geographic-space scene in real time based on a panoramic-video technique is provided. By using a measuring robot and the attitude sensors, accurately determining the geographic coordinates and the attitudes of the cameras, where the cameras may be installed in a fixed or stringing manner, where in the fixing type a plurality of neighboring videos at the same moment undergo orthographic correction and splicing, and in the stringing type the cameras are installed to a guiding device and may locally, independently and quickly move and shoot, and the videos of the neighboring cameras are spliced in real time; and fusing the videos, the geographic coordinates and the environment sounds that satisfy the delay time, to form a scene video streaming.

Abstract: The present invention relates to a GLP-1R receptor agonist compound and a use thereof. Specifically, the present invention discloses a compound represented by formula (I) or a pharmaceutically acceptable salt thereof. The compound can be used for treating a metabolism-related disease, such as diabetes or nonalcoholic fatty liver disease, by means of activating GLP-1R receptors.

Abstract: Provided is a determination method of differential protection suitable for an electricity transmission line with multi-terminal T-connection.

Abstract: The present invention discloses a compound represented by the following Formula (I) and a pharmaceutically acceptable salt thereof. The compound improves the THR? selectivity while maintaining good THR? agonistic activity, thereby improving properties of the finished drug.