Abstract: A method and a system for simultaneously realizing current sampling gain and delay compensation. A dummy load is formed from three-phase inductors with star connection to replace a motor load, and a dummy rotation angle is generated by software. In a calibration mode, a standard current sampling element is used for current sampling, and the related calibration parameters in the stable state are stored. Then, in a regulation mode, other current sampling elements produced in batches are used for current sampling, and the delay compensation coefficient and gain compensation coefficient of the sampled current are generated through two closed-loop voltage feedbacks respectively, and the two compensation processes are decoupled from each other and do not affect each other. The present disclosure effectively ensures the accuracy and consistency of current sampling.

Abstract: The present disclosure discloses a multiplexing topological structure for simultaneously realizing control of a duplex-winding motor and charging of an on board charger. By controlling the connecting and disconnecting state of a specific relay, the bidirectional switching between the control topology of the duplex-winding motor and the charging topology of the on board charger is realized. In the duplex-winding motor control mode, the topology is divided into a battery module, a duplex-winding motor power control module, a duplex-winding motor power control module, a duplex-winding motor winding module and a duplex-winding motor winding module; in the on board charger charging mode, the topological structure is divided into a electric supply module, a PFC inverter circuit module, an inverter module, an isolation transformer module, a rectifier module and a battery module.

Abstract: Underwater Deployable Structures (UDSs) capable of achieving inflation via mechanical pumps, moisture-activated expanding foams, water swelling material, or a hybrid of a mechanical pump and water swelling material. Moisture expanding foams begin as polyurethane-based resins of low viscosity, and react in the presence of water to become solid foam. In their final forms, the foams exist as open- or closed-cell, and vary in strength, elasticity, and rigidity. Water swelling material is also disclosed wherein the water swelling material is capable of achieving expansion numerous (e.g., up to about 250) times its initial volume when in contact with water and can shrink back to its initial volume upon dehydration, making the UDSs reusable. A mechanical pump may optionally be used to assist in initial inflation until the water swelling material reaches full expansion.

Abstract: The present invention is a method for quickly determining the position of a signal mouthpiece of spraying equipment. The spraying equipment includes a bolt, a water intake signal mouthpiece, an outlet cover plate, a sprayer body, a water storage vessel, a scale line, a conduit and a water inlet connecting mouthpiece. The water intake signal mouthpiece is adjusted to a critical point, and a reference position of the water intake signal mouthpiece is marked. The water intake signal mouthpiece is adjusted to obtain a water intake area S1. The conduit is disconnected with a water intake port. The time t1 is recorded, and the flow coefficient ? of the signal water of the spraying equipment is calculated. M scale lines are drawn equidistantly on the outlet cover plate, and are marked with scales in turn. The optimization of the position of the signal mouthpiece of the spraying equipment is realized.

Abstract: The present invention relates to a solar azimuth estimation method and system based on multi-channel feature enhancement and region-aware attention, belonging to the technical field of intelligent navigation for low-altitude economy unmanned systems. Aiming at the problem of decreased accuracy in solar azimuth estimation based on polarization images under complex cloud cover conditions, the present invention proposes a deep learning framework integrating multi-channel features and direction-aware attention. First, based on polarization light field information acquired by a division-of-focal-plane polarization camera, a three-channel composite input feature composed of a polarization intensity map, an adaptive threshold gradient map, and high-frequency residual edge information is constructed.

Abstract: A method for leaching separation of a mixed rare earth concentrate includes: completing surface modification on the mixed rare earth concentrate under the action of a plasma gas flow, and obtaining a surface-modified mixed rare earth concentrate; performing mineral phase transformation on the surface-modified mixed rare earth concentrate, transforming a bastnaesite phase in the mixed rare earth concentrate into a cerium oxyfluoride, and obtaining a mineral phase transformation product containing the cerium oxyfluoride; performing acid leaching on the mineral phase transformation product, and obtaining an acid leachate and an acid leaching residue; completing surface modification on the acid leaching residue under the action of a plasma gas flow, and obtaining a surface-modified acid leaching residue; and performing alkaline leaching on the surface-modified acid leaching residue, and obtaining an alkaline leachate and an alkaline leaching residue.

Abstract: A test-bed for a pump as turbine transition process based on digital twinning is provided, including a PAT physical model used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; a PAT twinning data system used for processing the data of the pump as turbine transition process to obtain a measurement database; a PAT twinning virtual system used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and a PAT service system used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at the same time.

Abstract: A test-bed for a pump as turbine transition process based on digital twinning is provided, including a PAT physical model used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; a PAT twinning data system used for processing the data of the pump as turbine transition process to obtain a measurement database; a PAT twinning virtual system used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and a PAT service system used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at the same time.

Abstract: The present invention relates to a real-time heading angle calculation method based on the vector characteristics of the polarized light field. Aiming at the problems of traditional solar meridian detection methods, such as being easily disturbed in low signal-to-noise ratio scenarios like haze and cloud cover, the occurrence of polarization angle errors and high false detection rates caused by lens distortion, and the difficulty of using single polarization angle information to fully reflect the solar direction, which affects the real-time performance and robustness of heading calculation. This method calculates polarization parameters by using multi-channel polarization images.

Abstract: Disclosed in the disclosure is a method for matching a guide vane and an outlet passage of a low-lift pump station, including: collecting original data of a target pump station, and selecting, according to the original data, a combination pattern for combined adjustment of an axial length of a guide vane blade, a placement angle of a guide vane outlet and a diameter of the guide vane outlet by classification; and optimizing the combination pattern for combined adjustment of the axial length of the guide vane blade, the placement angle of the guide vane outlet and the diameter of the guide vane outlet, to obtain an optimal parameter combination scheme. According to the disclosure, the hydraulic performance of the guide vane is improved, the hydraulic loss of the outlet passage is reduced, and the efficiency of a pump device is enhanced.

Abstract: This invention pertains to the field of plant extraction and separation technology, and provides a polysaccharide compound with a defined molecular structure that possesses antitumor efficacy. The polysaccharide compound is intended for the treatment of advanced cancer patients (those who are no longer candidates for surgery, have a life expectancy of only three to six months, and are still eligible for chemotherapy). The molecular formula is: (C30H50O25)n. The active ingredient, polysaccharide, is obtained through the extraction of effective components from Ganoderma lucidum under high temperature and high pressure. The polysaccharide with this active ingredient, characterized by its water solubility, is readily absorbed by the human body, offers antitumor effects, and has proven efficacy in the prevention of tumor development in humans.

Abstract: The present disclosure relates to the technical field of organic polymer compounds, in particular to chromatography media for removal of polyphenol substances and a preparation method thereof. A method for preparing chromatography media for the removal of polyphenol substances includes: obtaining an aqueous phase by mixing a water-soluble inorganic salt, a dispersing agent and water; obtaining an oil phase by mixing N-vinyl pyrrolidone, a first crosslinking agent, a second crosslinking agent, a third crosslinking agent, an initiator and a pore-forming agent; and preparing the chromatography media for the removal of the polyphenol substances by adding the oil phase into the aqueous phase for suspension polymerization. The chromatography media of the present disclosure has an effective binding ability for the polyphenol substances in fermented beverages, and an adsorption rate of the polyphenol substances is in a range from 40% to 46%.

Abstract: The present invention relates to the technical field of protein biological functions, in particular to a polypeptide, a fusion type multimeric protein and use thereof, the polypeptide is selected from: (1), a polypeptide having a substitution mutation in at least one position selected from the group consisting of positions 16, 25, 29, 49 and 58, as compared with a natural C structural domain of a protein A as shown in SEQ ID NO.

Abstract: This invention pertains to the field of plant extraction and separation technology and provides a polysaccharide compound with a well-defined molecular structure. The polysaccharide compound is suitable for treating patients with advanced cancer (where surgical options are no longer viable, life expectancy is only three to six months, and chemotherapy remains feasible), including the following steps of: S1. dust removal, drying, and crushing of Ganoderma lucidum; S2. mixing with water in a sealed container and extracting an active ingredient under high temperature and high pressure; S3. removing the residues from the concentrated extract containing the active ingredient; and S4. formulating the residue-free concentrate to a specific concentration and isolating polysaccharide with the active ingredient by column chromatography. The polysaccharide with this active ingredient, characterized by its water solubility, is readily absorbed by the human body.

Abstract: This invention pertains to the field of plant extraction and separation technology, and provides a polysaccharide compound with a defined molecular structure that possesses antitumor efficacy and mitigates the toxic side effects of chemotherapy. The polysaccharide compound is intended for the treatment of advanced cancer patients (those who are no longer candidates for surgery, have a life expectancy of only three to six months, and are still eligible for chemotherapy). The molecular formula of the polysaccharide compound is: (C66H110O55)n. The active ingredient, polysaccharide, is obtained through the extraction of effective components from Ganoderma lucidum under high temperature and high pressure. The polysaccharide with this active ingredient, characterized by its water solubility, is readily absorbed by the human body, offers antitumor effects, and has proven efficacy in the prevention of tumor development in humans.

Abstract: This invention pertains to the field of plant extraction and separation technology and provides a polysaccharide compound, GLP-4, with a defined molecular structure, effective in treating emphysema and pulmonary fibrosis, and exhibiting antitumor effects. The molecular formula is: (C162H270O135)n. The polysaccharide compound is obtained by extracting from a residue of Ganoderma lucidum processed with alkaline solution under high temperature and high pressure, followed by column chromatographic separation. The polysaccharide compound features excellent water solubility and is readily absorbed by the human body. The polysaccharide compound shows superior efficacy in treating emphysema and pulmonary fibrosis compared to pirfenidone and is also effective for patients with advanced cancer (those who are no longer surgical candidates, with a life expectancy of only three to six months, and still eligible for chemotherapy).

Abstract: This invention pertains to the field of plant extraction and separation technology, and provides a polysaccharide compound with a defined molecular structure that possesses antitumor efficacy. The polysaccharide compound is intended for the treatment of advanced cancer patients (those who are no longer candidates for surgery, have a life expectancy of only three to six months, and are still eligible for chemotherapy). The molecular formula is: (C30H50O25)n. The active ingredient, polysaccharide, is obtained through the extraction of effective components from Ganoderma lucidum under high temperature and high pressure. The polysaccharide with this active ingredient, characterized by its water solubility, is readily absorbed by the human body, offers antitumor effects, and has proven efficacy in the prevention of tumor development in humans.

Abstract: A composition comprising: a carbazole compound having a crosslinking group and represented by formula (71) or (72) below; and an electron accepting compound having a crosslinking group and represented by formula (81) below.

Abstract: The present invention is a method for quickly determining the position of a signal mouthpiece of spraying equipment. The spraying equipment includes a bolt, a water intake signal mouthpiece, an outlet cover plate, a sprayer body, a water storage vessel, a scale line, a conduit and a water inlet connecting mouthpiece. The water intake signal mouthpiece is adjusted to a critical point, and a reference position of the water intake signal mouthpiece is marked. The water intake signal mouthpiece is adjusted to obtain a water intake area S1. The conduit is disconnected with a water intake port. The time t1 is recorded, and the flow coefficient ? of the signal water of the spraying equipment is calculated. M scale lines are drawn equidistantly on the outlet cover plate, and are marked with scales in turn. The optimization of the position of the signal mouthpiece of the spraying equipment is realized.