16results about How to "Strong environmental tolerance" patented technology

The present invention discloses an ambient air constant-current automatic sampling system and a sampling method thereof. The system includes a vacuum sampling tank, a buffer container and a switching valve. The buffer container is respectively connected to the vacuum sampling tank and the atmospheric environment through the switching valve. Through the switching control of the switching valve, the buffer container is alternately connected to the atmospheric environment and the vacuum sampling tank to achieve the pressure balance of the sampled gas. The present invention also discloses a constant-current ambient air sampling method. The present invention breaks the foreign technical monopoly on high-precision atmospheric constant-current sampling devices, ensures the accuracy of atmospheric sampling flow control, ensures the inertness of the overall gas flow path, has flexible flow control and adjustment methods, uses commonly used industrial mass-produced devices and materials, realizes consumable-free and easy maintenance, and constructs an economical and efficient fully automatic ambient air constant-current automatic sampling system, contributing to the country's atmospheric environment monitoring and governance.

The invention discloses an acinetobacter CN-D1 isolated strain and application thereof, and belongs to the technical field of microorganisms. The invention provides an Acinetobacter sp. CN-D1 bacterial strain, and the preservation number of the bacterial strain is CCTCC (China Center for Type Culture Collection) NO: M 20242023. The acinetobacter CN-D1 separation strain provided by the invention is a synchronous nitrification and denitrification aerobic bacterium, and can remove substances such as total nitrogen, ammonia nitrogen, nitrite and the like in a water body at the same time; and meanwhile, the strain is high in environmental tolerance and can be applied to circulating aquaculture water and aquaculture tail water to play a biological denitrification role.

This invention relates to a method for preparing a bimodal hydrogel detection reagent for carbofuran residues in cucumbers, belonging to the field of food safety testing. The bimodal hydrogel detection reagent is a hydrogel-like detection reagent synthesized by adding a copper-doped metal-organic framework to a sodium alginate-calcium carbonate hydrogel system. The bimodal hydrogel detection reagent is a three-dimensional network structure material. The detection limit of the bimodal hydrogel detection reagent for carbofuran in cucumbers is 17.59 μM in the colorimetric mode (0-250 μM) and 5.98 μM in the fluorescence mode (0-180 μM), achieving bimodal detection. This not only enables real-time on-site monitoring of carbofuran residues in cucumbers but also ensures the accuracy of the detection results through cross-validation between the two modes; the detection time is within 1.5 hours, and it exhibits good specificity for carbofuran residues in cucumbers.

The present invention relates to a resin composition and a foam substrate, in which the resin composition comprises a first resin and a solvent, in which the viscous flow activation energy of the first resin is 5-40 kJ / mol under the conditions of 120-180 DEG C and a shear rate of 0.05 s <-1 >-1 s <-1 >, the surface tension of the resin composition is 25-70 mN / m, and the viscosity of the first resin is 5-40 kJ / mol under the conditions of 120-180 DEG C and a shear rate of 0.05 s <-1 >-1 s <-1 >. The foam base material comprises a foam core material and a coating coated on the surface of the foam core material, and the coating is obtained by curing the resin composition. The resin composition can completely coat the surface of a foam core material, so that the improvement effects of water absorption and weather resistance of the foam core material are remarkably improved, and a foam base material prepared from the resin composition has excellent environmental tolerance, does not easily absorb water and can be better applied to the technical field of communication.

The invention discloses a double-top-electrode 4H-SiC position detector and a preparation method and application thereof. The double-top-electrode 4H-SiC position detector comprises a 4H-SiC substrate, a first electrode, a second electrode and a third electrode, the first and second top electrodes are arranged on the silicon surface of the substrate and are separated from each other; the bottom electrode is arranged on the carbon surface of the substrate. According to the detector, high-precision linear detection of the incident light position is realized in a single 4H-SiC material system by using a discrete double-top-electrode structure, and the problem that a traditional single-electrode structure cannot perform position sensing is solved; meanwhile, the problem of a heterogeneous material interface is fundamentally avoided through the full 4H-SiC-based monolithic structure, so that the long-term stability and reliability in extreme environments such as high temperature and intense radiation are remarkably improved by virtue of the excellent wide-band gap characteristic of the 4H-SiC material and the intrinsic stability of the structure while the high position detection precision is maintained; the problem that an existing position detector with a complex structure is insufficient in environment tolerance is solved.

The present invention provides a Klebsiella pneumoniae phage that can lyse a variety of K-capsule Klebsiella pneumoniae and has a long-lasting antibacterial effect, and its application, which belongs to the field of biotechnology. The phage was deposited in the China Center for Type Culture Collection on March 4, 2024, and the deposit address is: Wuhan University, Wuhan, China, and the deposit number is CCTCC NO: M 2024373. The phage GRNKpP10 has a lytic effect on Klebsiella pneumoniae. In addition, the phage GRNKpP10 has lytic properties on a variety of K-capsule Klebsiella pneumoniae, and has a long-lasting antibacterial effect on a variety of K-type antigenic Klebsiella pneumoniae; the phage GRNKpP10 has the advantages of high value-added titer, safety and efficiency, and good tolerance to temperature and pH. The present invention can effectively prevent diseases caused by pathogenic Klebsiella pneumoniae in various environments.

The invention belongs to the technical field of biological medicine, and particularly relates to a preparation method of a probiotic hydrogel material and application of the probiotic hydrogel material in treatment of acute radioactive intestinal injury. In order to solve the clinical key problem of radioactive intestinal injury, a novel biological material TG-CCS-coated DY802 of thiolated synchronously modified chitosan hydrogel TG-CCS loaded with'localized high-response 'lactobacillus salivarius DY802 is constructed. The synthesis process of the material is synergistic and time-saving, has excellent biological safety and tumor inhibition experiment performance, and can comprehensively repair four barriers of the intestinal tract: ROS is removed, and tight junction protein is protected to repair the physical barrier; forming a hydrogel protective layer to reinforce the chemical barrier; the flora diversity is improved, and the prebiotic effect is exerted to repair the biological barrier; the sphingomyelin metabolism and ceramide abundance are regulated and controlled, the abnormal infiltration of NK cells is inhibited, and the immune barrier is remodeled. Therefore, the probiotic hydrogel material disclosed by the invention is clear in treatment mechanism and remarkable in clinical transformation potential and application value.

The invention discloses self-repairing high-strength composite geotechnical cloth based on an MICP technology and a preparation method. The self-repairing high-strength composite geotechnical cloth is composed of first bio-fiber geotechnical cloth, high-strength composite geotechnical cloth and second bio-fiber geotechnical cloth which are sequentially arranged from bottom to top. The first bio-fiber geotextile consists of animal fur fibers, plant stem and leaf fibers and synthetic fibers, and is processed and formed by a needling process; the high-strength composite geotechnical cloth is composed of high-strength warp yarn fibers, high-strength weft yarn fibers and polypropylene fibers, and the high-strength warp yarn fibers, the high-strength weft yarn fibers and the polypropylene fibers are interwoven to form a groined structure in a warp-weft crossing and up-down overlapping Central pores of each #-shaped structure formed by the high-strength warp fibers, the high-strength weft fibers and the polypropylene fibers of the high-strength composite geotechnical cloth are uniform and consistent in size; the second bio-fiber geotextile is formed by needling animal fur fibers, plant stem and leaf fibers and synthetic fibers, penetrating through a central pore of the #-shaped structure of the high-strength composite geotextile and connecting with the fibers of the first bio-fiber geotextile.

The invention relates to saccharomyces cerevisiae and application thereof, and belongs to the technical field of microbial strain screening and application. According to the invention, a saccharomyces cerevisiae G1 is screened and separated from peels of passion fruits and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC NO: M 2024815. The invention further discloses application of the saccharomyces cerevisiae in brewing of passion fruit wine. Experiments prove that compared with a commercial saccharomyces cerevisiae strain, the strain disclosed by the invention has stronger ester production, gas production and acid production capacity, weaker acid production capacity and stronger tolerance to SO2 in the environment, and can be used for brewing fruit wine and ensuring the flavor of the fruit wine.

The present invention belongs to the field of adhesive preparation, specifically a method for preparing an all-solid-state fluorinated ion gel underwater adhesive, bistrifluoromethanesulfonyl imide anion (TFSI), due to the low polarizability and high electronegativity of its fluorinated group, has the strongest hydrophobicity among various anionic groups, can destroy the hydration layer barrier of the substrate, and effectively eliminate the interference of water molecules. Furthermore, different functional groups in the ion gel can form multiple interactions with the substrate material, such as electrostatic interaction, cation-π interaction, ion-dipole interaction, etc. to achieve underwater adhesion. Therefore, the all-solid-state ionic liquid gel adhesive can maintain long-term stable adhesion when used underwater, and can be applied to underwater motion detection, marine resource exploration, hemostatic dressings, underwater repair, etc., and is an efficient, durable underwater adhesive material with excellent environmental tolerance.

The present invention belongs to the field of touch screen technology, and specifically relates to a nano silver touch screen and a preparation method thereof, comprising a flexible circuit board and a substrate, wherein the surface of the substrate is provided with a first nano silver conductive layer, a first conductive silver paste layer, a first transparent insulating ink layer, a second nano silver conductive layer, a second conductive silver paste layer, and a second transparent insulating ink layer in sequence. The nano silver touch screen and the preparation method thereof provided by the present invention have simple processing steps, thereby greatly reducing production costs and improving production efficiency, using multiple layers of barrier materials for protection, and the manufactured touch screen has stronger environmental tolerance and longer service life.

The present invention provides a Vibrio alginolyticus phage acting on drug-resistant Vibrio and an application of its liposome-coated preparation, belonging to the field of biotechnology. The phage was sent to the China Center for Type Culture Collection for preservation on March 6, 2024. The preservation address is: Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 2024391. The bacteriophage VAP2312001 has a lytic effect on Vibrio parahaemolyticus, Vibrio alginolyticus, Vibrio harveyi and Vibrio cannelli. The liposome coating technology used improves the encapsulation rate of the phage, and the liposome-coated phages improve the survival rate of the mouse model infected with resistant Vibrio alginolyticus. The phage has the advantages of high value-added titer, safety and high efficiency. The liposome coating technology improves the tolerance of the phage VAP2312001 to temperature and pH values. The phage can prevent diseases caused by resistant Vibrio in various environments, and provide excellent strain resources and large-scale fermentation production biological prevention measures for phage therapy of resistant Vibrio infection problems.

This invention discloses a self-healing high-strength composite geotextile based on MICP technology and its preparation method. It comprises a first bio-fiber geotextile, a high-strength composite geotextile, and a second bio-fiber geotextile arranged sequentially from bottom to top. The first bio-fiber geotextile is composed of animal fur fibers, plant stem and leaf fibers, and synthetic fibers, and is formed by needle punching. The high-strength composite geotextile is composed of high-strength warp fibers, high-strength weft fibers, and polypropylene fibers, interwoven in a cross-hatching manner to form a grid-like structure. The central pores of each grid-like structure formed by the high-strength warp fibers, high-strength weft fibers, and polypropylene fibers of the high-strength composite geotextile are uniform in size and uniform in shape. The second bio-fiber geotextile, composed of animal fur fibers, plant stem and leaf fibers, and synthetic fibers, is needle-punched through the central pores of the grid-like structure of the high-strength composite geotextile and connected to the fibers of the first bio-fiber geotextile.

The present invention discloses a Vibrio parahaemolyticus phage with a multivalent lysis spectrum and its application in sea cucumber farming, belonging to the field of biotechnology. The phage has been sent to the China Center for Type Culture Collection for preservation on January 18, 2024. The preservation address is: Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 2024134. The phage VPP19 has a good lysis effect on common pathogenic Vibrio in sea cucumber farming, such as Vibrio parahaemolyticus, Vibrio splendidus, Vibrio alginolyticus, Vibrio harveyi and Vibrio robustus. In addition, the Vibrio parahaemolyticus phage VPP19 has high value-added titer, wide lysis spectrum, safety and high efficiency, and good tolerance to temperature and pH. The present invention can effectively prevent diseases caused by common pathogenic Vibrio in sea cucumber farming, and provide excellent strain resources and biological prevention measures for large-scale fermentation production for phage therapy of Vibrio problems in sea cucumbers.

The application relates to a preparation method of a nanometer enzyme detection reagent for metronidazole residues in apples, and belongs to the technical field of pesticide residues and food safety. The specific operation is as follows: (1) mesoporous polydopamine powder is prepared by using polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer, dopamine hydrochloride and the like; (2) a copper-manganese bimetal carbon dot solution is prepared by using citric acid, copper chloride, manganese chloride and ethylenediamine; and (3) a nanometer enzyme detection reagent is prepared by using the mesoporous polydopamine solution and the copper-manganese bimetal carbon dot solution. The mesoporous polydopamine has a large specific surface area, can provide a large number of positions for the loading of carbon dots, and can well adsorb metronidazole molecules. The copper-manganese bimetal carbon dots make the nanometer enzyme detection reagent have good enzyme-like activity, and generate pesticide concentration-dependent colorimetric signals and photothermal signals. The application realizes mutual checking of double-mode output signals, and significantly improves the reliability of detection; and the detection is completed within 1.5 hours.

The invention discloses nanometer Fe3O4 mineralized dunaliella salina, a preparation method thereof and application of the dunaliella salina in construction of a microbial fuel cell. According to the invention, dunaliella salina and dunaliella salina subjected to nano ferritization are used as anode electrogenesis microorganisms, a double-chamber microbial fuel cell MFC is constructed, and the wild type dunaliella salina MFC is stable in electrogenesis and is an ideal electrogenesis microorganism; the MFC constructed by the dunaliella salina subjected to nanometer ferroferric oxide mineralization is beneficial to rapid enrichment of cells on the surface of an electrode, the electricity generation performance of the MFC is improved, and the service life of the battery is prolonged. The Dunaliella salina has strong environmental tolerance, can survive under high salt concentration, and can grow and breed by synthesizing organic matters by using simple inorganic matters in the photosynthesis process. When the microorganism is used as an electrogenesis microorganism, MFC electrogenesis is stable, and the microorganism is an ideal electrogenesis microorganism. The dunaliella salina culture medium not only can promote the growth of electrogenesis microorganisms, but also can be used as an electrolyte of an MFC (Microbial Fuel Cell), and has a good application prospect.