6results about How to "Smooth migration" patented technology

The present application relates to the preparation method of thick polycrystalline diamond compact for oil and gas drilling, which comprises the following steps: mixing two or more kinds of diamond powder with impurities removed; sand blasting the cemented carbide substrate; sequentially loading the impurity storage layer, the diamond powder mixture layer, the low-melting-point metal sheet, the cobalt sheet and the cemented carbide substrate into a high-temperature-resistant metal cup; placing the high-temperature-resistant metal cup into a synthetic block and then into a six-surface press; performing two-stage high-temperature and high-pressure sintering, wherein the first stage is sintering at a pressure of 5.5-5.8 GPa and a temperature of 800-1300 DEG C for 60-150 seconds, and the second stage is sintering at a pressure of 6-8 GPa and a temperature of 1490-1580 DEG C for 450-700 seconds; and taking out at room temperature and normal pressure. The impurity storage layer, the low-melting-point metal sheet and the cobalt sheet are arranged, and the high-temperature and high-pressure scanning sintering method is adopted, so that the thickness of the diamond layer reaches 3-4 mm after sintering, and the service life is greatly prolonged.

The present application relates to the field of environmental monitoring and remote sensing information processing technology, and discloses a method and system for predicting the concentration of nutrient salts in a breeding area coupled with remote sensing data. The method comprises: constructing a physically constrained ecological hydrodynamic model to generate synthetic remote sensing-nutrient salt pairing data; fusing multi-source remote sensing and measured data to form a high-dimensional feature tensor; separating breeding sensitive features and environmental interference features through an attention-guided domain-invariant feature decoupling network; transferring prior knowledge of the source domain large-scale breeding area using a dynamic weight cross-domain knowledge distillation architecture; and finally outputting real-time high-precision nutrient salt concentration distribution through a lightweight regression head and time series smoothing. The system includes corresponding functional units. The present application improves the prediction accuracy and stability in small sample scenarios, suppresses negative transfer, and provides support for precision breeding and eutrophication early warning.

This invention provides a gas dehumidification device and production system. The gas dehumidification device includes an aerogel permeable membrane unit and a driving unit. The aerogel permeable membrane unit includes a dehumidification chamber and an aerogel permeable membrane disposed in the dehumidification chamber. The aerogel permeable membrane divides the dehumidification chamber into a first dehumidification chamber and a second dehumidification chamber. The first dehumidification chamber includes an inlet for the gas to be dehumidified, and the second dehumidification chamber includes an outlet for the dehumidified gas. The driving unit includes a driving inlet, and the outlet for the dehumidified gas is connected to the driving inlet. This device allows the gas to be dehumidified to pass through the aerogel permeable membrane in the dehumidification unit, and the water vapor migration is completed by the hydrophobic selective structure, avoiding the problem of periodic replacement required by traditional adsorption dehumidification, which is beneficial for achieving continuous dehumidification. In addition, the connection with the driving unit can form a controlled negative pressure environment on both sides of the membrane, which enhances the driving force for water vapor migration, thus improving dehumidification efficiency and controllability. The overall structure is simple and has low energy consumption.

This invention belongs to the field of lithium-ion battery technology, and relates to a flame-retardant gel electrolyte, its preparation method, and a lithium-ion battery containing the electrolyte. The flame-retardant gel electrolyte is a gel structure in which a cross-linked gel network encapsulates a basic electrolyte. It has an ionic conductivity ≥0.50 mS / cm, a self-extinguishing time ≤2s, a thermal runaway temperature ≤1000℃, and a mass retention rate ≥40% after thermal runaway. This flame-retardant gel electrolyte achieves excellent flame-retardant performance through its cross-linked gel network structure. The self-extinguishing time ≤2s can quickly prevent flame spread, and the thermal runaway temperature ≤1000℃ and mass retention rate ≥40% after thermal runaway significantly improve battery thermal safety. Simultaneously, the high ionic conductivity ≥0.50 mS / cm ensures smooth ion migration during charging and discharging, reduces battery polarization, and improves charging and discharging efficiency and cycle stability.

The invention relates to the technical field of MOS (Metal Oxide Semiconductor) semiconductors, and discloses a voltage-withstanding MOSFET (Metal Oxide Semiconductor Field Effect Transistor) device for high-load shutdown of a robot dog and a preparation method thereof, the voltage-withstanding MOSFET device comprises a plurality of parallel MOS cells, and each MOS cell comprises a drain electrode, a semiconductor epitaxial layer, a source electrode and a grid electrode; the semiconductor epitaxial layer comprises an N substrate layer, an N drift layer, a P + layer, an N well layer and a P well layer, and a lightly doped N layer is arranged in the middle of the N drift layer of each MOS cell; laterally symmetrical L-type P-layers with inclined tops and arc-shaped opposite side tops are introduced to the two sides of an N drift layer, and in cooperation with the middle buffering effect of a lightly doped N layer, local electric field concentration at the edge of the N drift layer in a traditional device can be accurately dispersed; the arc-shaped and L-shaped contours defined by the photoetching process can effectively guide the electric field to be uniformly distributed, so that the breakdown risk caused by too strong local electric field is avoided.

The invention discloses a waste fishpond ecological restoration method based on an ecological corridor. The method comprises the following steps: surveying and mapping a waste fishpond; a biological corridor is constructed between the land and the fish pond to ensure the passage of terrestrial animals; an aquatic ecological corridor is constructed between the fishpond and the ocean, and tidal water is introduced to realize periodical fluctuation of the water level of the fishpond; pond ridge removal, slope cutting and tidal creek excavation are conducted on the interior of the fishpond, and a gentle slope area and a water power circulation system which are communicated with the ecological corridor are formed; shrubs are planted in different areas according to the elevation, the function of a fishpond ecosystem is restored, and continuous communication of a land-fishpond-marine ecosystem is achieved by building a biological corridor between a land forest and a waste fishpond and building an aquatic ecological corridor between a sea and the waste fishpond. Terrestrial animals can smoothly enter the mangrove forest restoration area of the fishpond through the biological corridor, and aquatic organisms can freely migrate between the ocean and the fishpond through the aquatic ecological corridor, so that obstruction of the abandoned fishpond to biological migration is effectively eliminated, and regional ecological connectivity is enhanced.