5results about How to "Stable internal environment" patented technology

The invention discloses an application and method of Tween 80 combined immobilization technology enhanced microorganisms in degradation of naphthalene pollution in water, the main body of the combined immobilization technology is SA / CS at Tween 80 hydrogel microspheres loaded with NM-1 flora, and the NM-1 flora is halotolerant bacteria obtained by enrichment and domestication from deep-sea sediments of a certain sea ditch. The SA / CS at Tween 80 microspheres are formed by crosslinking sodium alginate (SA), chitosan (CS) and Tween 80, hydroxyl functional groups of the Tween 80 and SA / CS are crosslinked to enhance the mechanical strength of the microspheres and regulate and control the pore structure to improve the mass transfer efficiency, hydrophobic-CH functional groups at the end positions of the Tween 80 strengthen the adsorption capacity to naphthalene, meanwhile, a co-crosslinking structure at the interface of the SA / CS at Tween 80 hydrogel microspheres forms a biochemical metabolic reaction buffer area, and the adsorption capacity to naphthalene is improved. The direct toxicity stress of the high-concentration naphthalene on the flora is effectively avoided, and the effective biological removal of the high-concentration naphthalene is realized. The SA / CS-coated Tween 80 hydrogel microspheres prepared by the invention can effectively maintain the efficient metabolic activity and degradation efficiency of the loaded NM-1 flora, and show excellent cycle stability and good engineering application potential.

This application provides a gas path system, relating to the fields of gas path technology, ion migration technology, substance detection technology, or other technical fields. The gas path system includes: a sampling gas path, comprising a sampling port, an exhaust port, and a cap-shaped component capable of covering the sampling port and exhaust port; and an internal circulation gas path, connected to the sampling gas path via a selectively permeable membrane. Depending on the state of the cap-shaped component, the gas path system is configured to have corresponding operating modes, including at least one of the following: when the cap-shaped component is in the closed state, the cap-shaped component is configured to cover the sampling port and exhaust port to isolate external gas, and the sampling gas path self-circulates without sampling; when the cap-shaped component is in the open state, sample gas can enter the sampling gas path from the sampling port, wherein at least a portion of the sample gas passes through the selectively permeable membrane into the internal circulation gas path, and the remaining portion is discharged through the exhaust port. This application also provides an ion migration device and a detection method.

This utility model relates to the field of capacitor packaging shell technology, specifically a packaging shell structure for an aluminum electrolytic capacitor. The utility model includes a shell body and a sealing cap. The open end of the shell body is provided with an external thread, and the inner wall of the sealing cap is provided with an internal thread. The external thread of the shell body and the internal thread of the sealing cap are adapted to each other. The sealing cap is screwed onto the open end of the shell body through the cooperation of its internal thread and the external thread of the shell body. The adaptation and screwing of the external thread of the shell body and the internal thread of the sealing cap, along with the cooperation between the sealing ring, effectively prevents external moisture, dust, corrosive gases, etc., from entering the interior of the aluminum electrolytic capacitor, maintaining a stable internal environment, ensuring stable capacitor electrical performance, and extending service life. Furthermore, the screw into the limiting groove by the screw ensures precise positioning of the sealing cap, preventing it from rotating or loosening due to vibration or external force during use, further ensuring the overall structural stability.

This utility model discloses an aluminum electrolytic capacitor, relating to the technical field of aluminum electrolytic capacitors. It includes: a housing, with a core package fixedly installed on the inner wall of the housing, a guide pin fixedly installed on the top of the core package, and a top sealing plate sealed on the top of the housing; an exhaust valve, including a housing, with a vent plate fixedly installed on the top of the housing, and a blocking plate slidably connected to the inner wall of the housing; and a buffer assembly, installed between the inner wall of the housing and the outer wall of the core package, the buffer assembly including a sleeve, a sliding rod, and a damping block. This utility model effectively absorbs external vibration and impact energy through the synergistic effect of the sleeve, sliding rod, spring, and damping block in the buffer assembly, preventing damage to the internal structure of the core package due to external forces. Simultaneously, the automatic pressure relief and dustproof design of the exhaust valve promptly discharges internal gas and prevents impurities from entering, maintaining internal pressure and environmental stability, significantly improving the capacitor's service life and operational stability.

This application relates to a 3D printing work box, characterized by comprising a work box body (100) and a first opening and closing mechanism (200). A first sand leakage hole (110) is provided on the side wall of the work box body (100). The first opening and closing mechanism (200) is movably disposed on the outer side wall of the work box body (100). In a first state, the first opening and closing mechanism (200) blocks the first sand leakage hole (110). In a second state, the first opening and closing mechanism (200) is moved away from the first sand leakage hole (110). This application also discloses a 3D printing device. This solution can solve the problems of current binder jet 3D printing equipment where the work box relies on a sand cleaning station for sand mold printing, resulting in low sand cleaning efficiency, large occupation of production space, and potential impact on the integrity of the sand core product due to sand leakage.