Abstract: A method of manufacturing a coordination compound of a rare-earth element includes mixing an oxide of a rare-earth element, a ligand, a C1-3 carboxylic acid, and a C2-6 anhydride to react to form water and a coordination compound of a rare-earth element; and removing the C1-3 carboxylic acid to obtain the coordination compound of a rare-earth element having a water content of less than 100 ppm.

Abstract: A pickup, a stringed instrument, and a pickup control method are disclosed. The pickup comprises: pickup components (110), multi-touch screens (130) and processing components (140). The multi-touch screens (130) and the processing components (140) are connected. The pickup components (110) and the processing components (140) are connected. The pickup components (110) is configured to pick up sound information emitted by a musical instrument. The multi-touch screen (130) is configured to display function application information that is selected from a group consisting of timbre adjustment function application information, tone adjustment function application information, and equalizer adjustment function application information. The multi-touch screen is configured to receive a function triggering instruction. The multi-touch screen displays information as to functional applications available through the pickup capabilities.

Abstract: A wearable heart sound detection device includes an acoustic sensing device for collecting heart sound signals of user's body. A wireless transmission device is connected to transmit and receive data, an e-SIM embedded in the wearable heart sound detection device, wherein said acoustic sensing device includes a capacitive sound sensor, a piezoelectric sound sensor or the combination thereof. A circuit assembly electrically is connected with the capacitive sound sensor or said piezoelectric sound sensor, wherein the capacitive sound sensor and the piezoelectric sound sensor are integrated on a flexible substrate. The e-SIM is compatible with a wireless transmission protocol selected from a group of WiFi, 4G, 5G, 6G or any combination thereof.

Abstract: A silicon optical chip with integrated antenna array comprises a wavelength division multiplexer, antenna array, photodiode, amplifier, and electro-optical modulator. The wavelength division multiplexer is configured to receive an optical signal with a plurality of wavelengths and to divide the optical signal into a plurality of wavelength division optical signals, or is configured to integrate a plurality of wavelength division optical signals into optical signals to output. The antenna array is configured to receive or transmit radio frequency signals. The amplifier is signally connected to the photodiode and the antenna and is configured to amplify the radio frequency signal received by the antenna. The electro-optical modulator is signally connected to the amplifier and the wavelength division multiplexer and is configured to transform the amplified radio frequency signal into wavelength division optical signals to input to the wavelength division multiplexer.

Abstract: A Car Door Inner Handle Base Repair Method is a technique used to repair the fracture and separation of the welding post between the car door inner handle base and the inner door panel body without the need to replace the entire car door inner panel assembly. This method involves creating an identical repair component by copying the car door inner handle base. The repair component includes multiple corresponding through-posts, aligned with the welding posts of the damaged inner door panel body and the damaged car door inner handle base. To execute the repair, the damaged inner door panel body is drilled with holes corresponding to the through-posts, and the repair component's multiple through-posts are inserted into the corresponding holes on the damaged inner door panel, securing the repair component in place using locking mechanisms.

Abstract: The present invention provides a coal feeding control method and system for a small pulverized coal silo, the method includes: acquiring a boiler load increase signal, and determining the target function F(t) for boiler load control obtaining the current coal mill output signal B(t), where B(t) is the fuel quantity signal at the outlet of the coal mill that changes over time from the start time; comparing B(t) with F(t): if B(t) cannot meet the fuel quantity requirements of F(t), activate the small pulverized coal silo connected to the boiler; otherwise, the small pulverized coal silo remains inactive; determining the coal feeding signal f(t) for the small pulverized coal silo, and further determining the coal feeding control signal f(t) for the small pulverized coal silo; controlling the small pulverized coal silo to feed coal to the boiler, quickly changing the combustion rate in the furnace, and increasing the boiler load.

Abstract: A composite antenna and an electronic device are proposed. The electronic device includes the composite antenna, and the composite antenna includes a substrate, a first antenna structure, two contact springs, an antenna holder and a second antenna structure. The first antenna structure is disposed on the substrate, and two ends of the first antenna structure are coupled to a feeding point and a grounding point, respectively. The two contact springs are disposed on the first antenna structure, and electrically connected to the feeding point and the grounding point, respectively. The antenna holder is removably disposed on the substrate. The second antenna structure is disposed on the antenna holder and electrically connected to the two contact springs.

Abstract: A method and structure for reinforcing a car tailgate handle is used to strengthen a tailgate handle that is prone to breaking. Through the steps of disassembly, measurement, production of reinforcement parts, assembly of reinforcement parts and original parts, and installation, it is possible to quickly and extensively remedy tailgate handles with mechanical structural defects that have already been sold. This method and structure offer advantages such as simplified design, reduced material usage, environmental friendliness, ease of production, and rapid mass production.

Abstract: A method and reinforcement structure of a car door outside handle, used to replace a damaged car door handle. The process involves disassembling, measuring, manufacturing reinforcing components, assembling the reinforcing parts with original components, and installation. This method allows for rapid and mass production, utilizing a structure with embedded reinforcing components to strengthen the weaker areas of the original car door outside handle. It offers advantages such as simplified structure, reduced material usage, environmental friendliness, ease of production, and efficient mass production.

Abstract: A car tailgate handle base reinforcement and repair structure is designed to be integrated with a car tailgate handle joint. It comprises the following features: a handle base with one side being a connecting surface and the other side being an exposed surface. The connecting surface has a pivot pin on one side and an elastic pin on the opposite side. At least one reinforcement pin, placed at an appropriate location on the connecting surface, and equipped with a tab slot. A flexible tab, with one part of the tab being shaped to correspond with the tab slot's interior and the other part forming a flat spring portion. In this structure, the flexible tab is inserted into the tab slot through the connecting part, forming a connection with the reinforcement pin.

Abstract: A Car Door Inner Handle Base Repair Method is a technique used to repair the fracture and separation of the welding post between the car door inner handle base and the inner door panel body without the need to replace the entire car door inner panel assembly. This method involves creating an identical repair component by copying the car door inner handle base. The repair component includes multiple corresponding through-posts, aligned with the welding posts of the damaged inner door panel body and the damaged car door inner handle base. To execute the repair, the damaged inner door panel body is drilled with holes corresponding to the through-posts, and the repair component's multiple through-posts are inserted into the corresponding holes on the damaged inner door panel, securing the repair component in place using locking mechanisms.

Abstract: A wearable heart sound detection system, which includes an acoustic sensing device for collecting heart sound signals of the body, performing signal amplification, filtering, digitization and other preprocessing on the collected heart sound signals, and outputting the preprocessed heart sound signals; a computing electronic device communicatively coupled to the acoustic sensing device for acquiring the preprocessed heart sound signal, and a cloud data database communicatively coupled to the external computing electronic device. The acoustic device includes a capacitive sound sensor, a piezoelectric sound sensor and a circuit assembly. The circuit assembly is respectively electrically connected with the capacitive sound sensor and the piezoelectric sound sensor. The circuit assembly, the capacitive sound sensor and the piezoelectric sound sensor are integrated on a flexible substrate.

Abstract: The present invention discloses a smart sensing insole including a pressure sensing layer (for instance a pressure plate) which includes sensing sensors. The sensors are used as sensing points to measure the pressure and the distribution when the foot pressure changes. Each sensor is coupled to the sensing module. The area occupied by the sensing points is between 3-50% or 3-70% of the entire insole area. The sensing point position is configurated at pressure peak position, pressure center area, foot arch position.

Abstract: A method for producing Si ingot single crystal including a Si ingot single crystal growing step, a temperature gradient controlling step and a continuous growing step is provided. In the growing step, the Si ingot single crystal is grown in silicon melt in crucible, and the growing step includes providing a low-temperature region in the Si melt and providing a silicon seed to contact the melt surface of the silicon melt to start crystal growth, and silicon single crystal grows along the melt surface of the silicon melt and toward the inside of the silicon melt. In the temperature gradient controlling step, the under-surface temperature gradient of the silicon single crystal is G1, the above-surface temperature gradient of the silicon single crystal is G2, G1 and G2 satisfy: G2/G1<6. The step of controlling the temperature gradient of silicon single crystal is repeated to obtain the Si ingot single crystal.

Abstract: A quick releasing mechanism includes an engagement component and a releasing component. The engagement component includes an arm structure. The arm structure has an engagement part. The releasing component is movably disposed on the engagement component. The releasing component includes a pressing protrusion for selectively pressing against the arm structure. When the releasing component is moved relative to the engagement component, the pressing protrusion of the releasing component presses against the arm structure to force the engagement part to rotate relative to the releasing component.

Abstract: Provided is a fused tri-cyclic compound as PDE3/PDE4 dual inhibitor, and a use thereof in the preparation of drugs for PDE3/PDE4 associated diseases, particularly in medicinal functions such as chronic obstructive pulmonary disease (COPD). Provided are specifically a compound of formula (I) and a pharmaceutically acceptable salt thereof.

Abstract: A method for collecting dust from a single crystal growth system includes providing dry air and oxygen into an exit pipe connecting to the single crystal growth system, blowing a first inert gas into the exit pipe to compel the dust oxide toward a dust collecting device, collecting the dust oxide by the dust collecting device; and providing a rotary pump to transport residues of the dust oxide backward. The oxygen reacts with the unstable dust for forming dust oxide. The exit pipe is used to exhaust unstable dust from the single crystal growth system.

Abstract: Provided are a crystal form of a triazolopyridine-substituted indazole compound and a preparation method therefor; and specifically disclosed are a crystal form of a compound as represented by formula (I) and a preparation method therefor.

Abstract: A method for producing Si ingot single crystal by NOC growth method including a Si ingot single crystal growing step and a continuous growing step is provided. The growing step includes providing a low temperature region in the Si melt where the Si ingot single crystal is grown along the surface of the Si melt or toward the inside of the Si melt, and the Si ingot single crystal has distribution of a vacancy concentration and an interstitial concentration in which respectively a vacancy concentration and an interstitial concentration vary with a distance from the growth interface; and adjusting a temperature gradient and a growth rate in the Si melt, so that along with the increasing of the distance from the growth interface, the vacancy concentration and the interstitial concentration in the Si ingot single crystal respectively decrease come near to each other.

Abstract: A method for producing Si ingot single crystal by NOC growth method including a Si ingot single crystal growing step and a continuous growing step is provided. The growing step includes providing a low temperature region in the Si melt where the Si ingot single crystal is grown along the surface of the Si melt or toward the inside of the Si melt, and the Si ingot single crystal has distribution of a vacancy concentration and an interstitial concentration in which respectively a vacancy concentration and an interstitial concentration vary with a distance from the growth interface; and adjusting a temperature gradient and a growth rate in the Si melt, so that along with the increasing of the distance from the growth interface, the vacancy concentration and the interstitial concentration in the Si ingot single crystal respectively decrease come near to each other.