Abstract: Disclosed are a crystalline form of a nitrogen-containing heterocyclic compound, a preparation method therefor and use thereof. The present invention provides crystalline form C of compound 1, and a preparation method therefor, a composition thereof and use thereof in the preparation of medicaments are disclosed. The crystalline form is good in stability and high in bioavailability.

Abstract: A three-side conveyor equipment for silicon wafers is provided, including an insertion container. A bottom conveyor belt and two side conveyor belts are arranged in the insertion container, the two side conveyor belts are arranged opposite to each other above the bottom conveyor belt, the bottom conveyor belt is connected to the side conveyor belts through a transmission assembly, and a linear speed of the bottom conveyor belt is same as a linear speed of each of the side conveyor belts, and each of the side conveyor belts is arranged on a movable bracket that drives the side conveyor belt to clamp or loosen, and the insertion container is provided with two pushing assemblies that respectively push the two movable brackets to move. The two side conveyor belts can clamp or loosen the silicon wafers, and at the same time maintain a same linear speed as the bottom conveyor belt.

Abstract: A material frame unlocking device may include a material frame and an insert slot, a clamping mechanism for clamping a silicon wafer is arranged on the material frame, and an unlocking mechanism for fitting the clamping mechanism is arranged on the insert slot. The clamping mechanism includes two clamping rods capable of opening and closing movements, an end of each of the two clamping rods is provided with a connecting rod, a middle portion of the connecting rod is provided with a hinge point, and an elastic assembly is arranged at one end of the connecting rod away from respective clamping rod, when the elastic assembly is controlled by the unlocking mechanism, the connecting rod rotates around the hinge point, and the two clamping rods are opened to separate the two clamping rods from each other.

Abstract: A worktable for cutting a monocrystalline silicon wafer may include a worktable, a control panel is fixedly mounted on an outer wall of the worktable, a recess is formed on an upper surface of the worktable, a rotatable table is disposed in the recess, a shaft is fixedly connected to a middle portion of the rotatable table, a mounting plate is fixedly connected to each of upper and lower sides of the rotatable table, a clamper is disposed on the mounting plate, a scraper plate is disposed on each of upper and lower surfaces of the rotatable table, and the shaft is rotatably mounted in the recess in the worktable.

Abstract: A residue scraper is provided, which includes a machine frame, which is provided with a clamping unit for fastening a material holder; a scraper unit for cleaning residues on a to-be-cleaned surface of the material holder, and a driving unit that drives the scraper unit to reciprocate along a long side direction of the material holder. In the present invention, the scraper unit is driven by the driving unit to scrape off the residues, thereby achieving a high efficiency to remove the residues.

Abstract: Disclosed is an application of an ionic iron (III) complex as a catalyst in preparation of a benzylamine compound, that is, an ionic iron (III) complex having a molecular formula of [(RNCHCHNR)CH][FeBr4] (R is tert-butyl) and containing 1,3-di-tert-butyl imidazolium cation is used as a catalyst, di-tert-butyl peroxide is used as an oxidizing agent, and a benzylamine compound is synthesized by oxidation reaction of a toluene/ethylbenzene compound with an aromatic amine. The present invention has a wide application range, and is applicable not only to a toluene compound containing a benzylic primary carbon-hydrogen bond but also to an ethylbenzene compound containing a benzyl secondary carbon-hydrogen bond. This is the first example of the preparation of a benzylamine compound by oxidation reaction of a toluene/ethylbenzene compound and an aromatic amine by an iron-based catalyst.

Abstract: Embodiments of this application disclose a model training method and related apparatuses in the field of artificial intelligence.

Abstract: Disclosed is an application of an ionic iron (III) complex as a catalyst in preparation of a benzylamine compound, that is, an ionic iron (III) complex having a molecular formula of [(RNCHCHNR)CH][FeBr4] (R is tert-butyl) and containing 1,3-di-tert-butyl imidazolium cation is used as a catalyst, di-tert-butyl peroxide is used as an oxidizing agent, and a benzylamine compound is synthesized by oxidation reaction of a toluene/ethylbenzene compound with an aromatic amine. The present invention has a wide application range, and is applicable not only to a toluene compound containing a benzylic primary carbon-hydrogen bond but also to an ethylbenzene compound containing a benzyl secondary carbon-hydrogen bond. This is the first example of the preparation of a benzylamine compound by oxidation reaction of a toluene/ethylbenzene compound and an aromatic amine by an iron-based catalyst.

Abstract: A use of bio-transformed bear bile powder in preparation of anti-inflammatory drugs is disclosed. The present invention carries out a comparative research on the anti-inflammatory drug activity of bio-transformed bear bile powder and natural bear bile powder. A research is made on the effect of the bio-transformed bear bile powder and natural bear bile powder on carrageenan-induced rat inflammation models, and a research is made on the effect of the bio-transformed bear bile powder on LPS-induced lung inflammation in mice. Experimental results show that the bio-transformed bear bile powder administration group obviously reduces plantar swelling of carrageenan-induced inflammation model in rats, and the effect thereof is not lower than that of the natural bear bile powder. Both the bio-transformed bear bile powder and the natural bear bile powder can significantly reduce levels of the inflammatory factors IL-6 and TNF-? in the lung and the serum.

Abstract: The present invention provides a system and method for construction of a spatial structure through the use of short-distance wireless communication means such as the infrared diode or pulse modulation. The system includes a plurality of objects, each object comprising multiple emitters and multiple receivers, each embedded near a surface of an object. Once a signal comprising information stored in multiple objects is received by the receiver of a particular object, a microprocessor is configured to derive the spatial relationship of these multiple objects relative to the particular object, and direct the information to be stored in its data storage means. A central processor receives information regarding the plurality of objects and derives a spatial structure formed by the plurality of objects. The present invention is useful in a variety of fields that require construction of a spatial structure. Example areas of applications are education, entertainment and productivity enhancement.

Abstract: The present invention provides an apparatus and method for eliminating blind spot of a high frequency RF antenna array, allowing an RFID tag to be detected when placed anywhere on top of and within the communication range of the RF antenna array. The RF antenna array includes a first array of RF antenna placed on a first surface and a second RF antenna placed on a second surface. The second RF antenna is located directly below or above the area encompassing borders of multiple antennas in the first array, but is not connected to any electrical path. Through the electromagnetic induction with the EM field generated by the first RF antenna array, a second EM field is formed by the second RF antenna, which enables detection and identification of the RFID tag placed on the blind spot of the first array of RF antenna. The present invention is useful in improving the RF communication range and accuracy of a passive RFID system.