Abstract: The present application relates to a compound of formula (I) for regulating and controlling 15-PGDH activity, a stereoisomer thereof, a tautomer thereof or a mixture thereof, a pharmaceutically acceptable salt thereof, a solvate thereof, or a prodrug thereof, a pharmaceutical composition containing same, and the use thereof for inhibiting 15-PGDH activity.

Abstract: A sealing structure includes a bottom supporting plate and a covering assembly, at least one module unit body is mounted on the bottom supporting plate; the covering assembly has a covering inner cavity, which adapts to the module unit body in terms of shape and size, and a covering opening, which is in sealing fit with the bottom supporting plate, and the covering assembly is provided with a wiring slot for allowing an output member of the module unit body to lead out a wire; and the part of the output member passing through the wiring slot is filled and sealed in the wiring slot by means of a filling-sealing adhesive. By means of making improvements to the design for a casing of each module unit body of the energy storage module, a sealing effect can be achieved by the casing of the module unit body.

Abstract: The present disclosure relates to a grinding sander. The grinding sander includes a sanding plate configured to move in an operation state, and a plurality of limiting members disposed on a surface of the sanding plate to define a plurality of strip-shaped slot areas. Each strip-shaped slot area is configured to allow at least one strip-shaped sandpaper to be correspondingly mounted therein to effect sanding of a surface of an article via the strip-shaped sandpaper under the movement of the sanding plate. The grinding sander of the present disclosure may be used to perform high-quality sanding of a narrow surface of an article.

Abstract: Provided is a gene for efficiently expressing hyaluronic acid hydrolase. A nucleotide sequence of the gene is represented by SEQ ID NO: 4. By truncating a segment of a signal peptide sequence at the N-terminus of a full-length hyaluronic acid hydrolase gene, the Pichia pastoris engineering strain of high level expression genetic engineering hyaluronic acid hydrolase is constructed. The enzyme activity of the hyaluronic acid hydrolase in a fermentation broth obtained by high-density fermentation using the constructed Pichia pastoris engineering strain is up to 4.7×105 U/mL.

Abstract: A display device and a device control method are provided in the present disclosure. The method includes: when a CEC device accesses a display device by means of an HDMI expansion interface, sending an SCDC interaction trigger signal to the CEC device by means of a receiving pin of a first switching circuit; identifying a first interface number of the HDMI expansion interface, which is accessed by the CEC device, and sending the first interface number to a second switching circuit; and the second switching circuit switching a communication link to the HDMI expansion interface corresponding to the first interface number, and the display device being capable of performing SCDC interaction with the CEC device on the basis of the communication link.

Abstract: The present disclosure discloses a concrete block apparatus for ash slag after coal gasification. The present disclosure relates to the field of ash slag concrete processing technology after coal gasification. including an apparatus; the first connecting frame is installed on the outside of the apparatus; the chute is opened in the interior of the apparatus; the first chute board is connected to the inside of the chute; the moving mechanism is connected to the first connecting frame, the moving mechanism includes the second chute board and the third chute board, the external of the second chute board and the third chute board is provided with a moving frame, the second chute board and the third chute board are used to control the moving frame in and out of the apparatus, the placing mechanism is connected to the moving mechanism.

Abstract: A coal gasification slag all-solid waste cementitious material and a preparation method thereof belong to the field of comprehensive utilization of resources and mining technology, the coal gasification slag all-solid waste cementitious material and the preparation method thereof adopt coal gasification slag, granulated blast furnace slag, desulfurization ash, desulfurization gypsum, carbide slag, and other mine or industrial solid waste with low cost. After resource utilization, the problem of solid waste accumulation is effectively solved, and the pressure on the ecological environment is reduced. A process of calcination and activation of coal gasification slag without auxiliary fuel is proposed, the calcination temperature is 400-500 °C. The high content residual carbon in coal gasification slag is used to provide the heat value of calcination, reduce the external energy consumption, and enhance the combustion rate.

Abstract: The invention provides an expansion device, including: a catheter body, configured to be capable of insertion into two organs in a human body or a mammal which are in communication with each other through a tube, and having a guide portion, an expansion portion and an infusion portion. The expansion portion includes an expansion balloon, and the expansion balloon is configured to be capable of expanding the tube between the two organs. The expansion device further includes a limiting element, and the limiting element is capable of limiting or controlling a size of expansion of the expansion balloon to keep the expansion balloon within a limited size. This technical solution can reduce a possibility of bursting of the expansion balloon under high pressure, and make the size of expansion of the tube consistent, thereby increasing the accuracy and precision of operation.

Abstract: The present disclosure belongs to the field of solid waste resource utilization and building materials technology, specifically relates to a copper molybdenum tailings based alkali activated cementitious material and preparation method. The copper molybdenum tailings based alkali activated cementitious material including: solid waste dry mixture, alkali activator solution, silicone acrylic lotion and modified nano-silica; where the solid waste dry mixture is composed of 50-70 parts of copper molybdenum tailings; 10-30 parts of auxiliary calcium material; 10-20 parts of silicon aluminum correction material. The method of the present disclosure can achieve a large-scale consumption of copper molybdenum tailings and prepare cementitious materials with excellent mechanical properties and good stability.

Abstract: A micro inverter, a photovoltaic system and a control method are provided. The micro inverter includes a controller, a primary H-bridge, a transformer, a bi-directional switch leg, and a capacitor leg An input terminal of the primary H-bridge is connected to a direct-current power supply, two output terminals of the primary H-bridge are respectively connected to two terminals of a primary side of the transformer, two terminals of a secondary side of the transformer are respectively connected to an intermediate terminal of the bi-directional switch leg and an intermediate terminal of the capacitor leg, and the bi-directional switch leg and the capacitor leg are connected in parallel. The controller is configured to switch a control mode of the primary H-bridge and the bi-directional switch leg in a case that a phase of a grid voltage is an odd multiple of 0.25? in each cycle.

Abstract: The present application provides an electromagnetic variable-damping latching-based long-period vibration control apparatus, including a housing, a rotating shaft, a pendulum mass, a brake assembly, a data acquisition element, an electromagnetic variable-damping module, and a control module.

Abstract: Disclosed are a cabazitaxel micelle and a preparation method thereof. The cabazitaxel micelle of the present invention comprises cabazitaxel and a polyethylene glycol-derived phospholipids. The polyethylene glycol-derived phospholipid comprises a polyethylene glycol moiety and a phospholipid moiety, and the phospholipid moiety is di(C12-C24 fatty acyl)phosphatidylethanolamine. The polydispersity index of the micelle is not greater than 0.09. The cabazitaxel micelle of the present invention has one or more of the following advantages: uniform particle size, good stability, low impurity content, high release rate, short reconstitution time, and convenient clinical administration.

Abstract: An energy storage module and a sealing structure thereof. The sealing structure comprises a bottom plate, an enclosure portion and a potting adhesive, wherein the bottom of the enclosure portion is connected to the bottom plate in a sealed manner; a module unit body is loaded in an enclosed space of the enclosure portion; and the potting adhesive is potted into an opening in the top of the enclosure portion and covers the top of the module unit body.

Abstract: A soft switch circuit, comprising switch voltage end A, main inductor L and second voltage end B. Switch voltage end A is electrically connected to first end of main inductor L; and second voltage end B is electrically connected to second end of main inductor L. Soft switch circuit further comprises auxiliary module (100) and first voltage end C, wherein first end of auxiliary module (100) is electrically connected to switch voltage end A; and second end of the auxiliary module (100) is electrically connected to first voltage end C. Auxiliary module (100) is used for charging auxiliary module (100) by using first voltage input by means of first voltage end C; and auxiliary module is further used for performing discharging to the switch voltage end A. Further provided are a power source assembly comprising a soft switch circuit, and a method for controlling a soft switch circuit.

Abstract: The present invention discloses a coal mine multi-disaster fusion early warning method and system, applicable in coal mine safety disaster analysis. First, it builds a model and relationship network among multi-disaster early warning entities, updating the network by specific rules. A trend prediction model using an LSTM artificial neural network is then developed for monitoring object trends, along with natural fission analysis rules. Next, a method for identifying anomalies in single disaster events is established through a disaster index prediction and early warning system. Upon detecting an anomaly in an early warning index, other disaster indexes are assessed using a depth-first traversal algorithm and natural fission rules, facilitating targeted forecasting. This invention builds a predictive relationship chain among early warning indexes through correlation analysis, providing advantages in multi-dimensional analysis and advanced trend prediction.

Abstract: A circuit board includes a main board, a thermistor layer, a plurality of n-type semiconductor units and a plurality of p-type semiconductor units. The main board includes a first external structure, a second external structure, and an internal structure disposed between the first external structure and the second external structure. The internal structure includes a first internal circuit layer, a second internal circuit layer, and an insulating layer disposed between the first internal circuit layer and the second internal circuit layer. The thermistor layer is disposed on the insulating layer and the first internal circuit layer. The n-type semiconductor units and the p-type semiconductor units are electrically connected to the second internal circuit layer and the second external structure, in which the n-type semiconductor units and the p-type semiconductor units are alternately arranged in one direction.

Abstract: A solar cell, including a crystalline silicon substrate; a first passivation contact step provided on a surface of the crystalline silicon substrate; a second passivation contact step provided on a surface of the first passivation contact step away from the crystalline silicon substrate and located corresponding to an electrode; a first passivation antireflection step provided on the surface of the first passivation contact step away from the crystalline silicon substrate and not in contact with the second passivation contact step; a second passivation antireflection step provided on a surface of the second passivation contact step away from the first passivation contact step; and the electrode including a side in contact with the first passivation contact step and another side penetrating through the second passivation contact step and the second passivation antireflection step.

Abstract: A sulfur-tolerant catalyst can be used in the sulfur-tolerant shift catalytic reaction. The catalyst has a carrier and a molybdenum oxide, a cobalt oxide and a cobalt-molybdenum-based perovskite composite oxide carried thereon. The cobalt-molybdenum-based perovskite composite oxide contains a molybdenum element, a cobalt element, an A element, and an oxygen element. The A element is one or more selected from a group consisting of a rare-earth metal element, an alkali metal element and an alkaline earth metal element.

Abstract: A diode structure includes a nanosheet structure on a substrate, including a first, first-type diffusion region, a second, first-type diffusion region on the substrate, a first, second-type diffusion region, and a second, second-type diffusion region, each on the substrate. The diode structure includes a first gate on the nanosheet structure between the first and second, first-type diffusion regions. The diode structure includes a first frontside zero (M0) metal layer coupled to a frontside of the first and second, first-type diffusion regions, and a first backside M0 metal layer coupled to a backside of the first and second, first-type diffusion regions to form an anode. The diode structure includes a second frontside M0 metal layer coupled to a frontside of the first and second, second-type diffusion regions, and a second backside M0 metal layer coupled to a backside of the first and second, second-type diffusion regions to form a cathode.

Abstract: A chip includes gates extending in a first direction, wherein the gates are spaced apart in a second direction perpendicular to the first direction. The chip also includes a diffusion region extending in the second direction, wherein the gates extend across the diffusion region, the gates do not extend across another diffusion region, the diffusion region comprises bridge channels, and each of the bridge channels passes through a respective one of the gates. The chip also includes gate contacts, wherein each of the gate contacts is disposed on a respective one of the gates, and the gate contacts are located on one side of the diffusion region.