Abstract: A magnetite-based micro/nanorobot and a preparation method and use thereof are provided. The magnetite-based micro/nanorobot uses a polydopamine-coated magnetite as a carrier that is loaded with an anti-inflammatory drug and is finally coated with sodium alginate. The magnetite-based micro/nanorobot of the present disclosure improves a loading effect of the drug resveratrol and has an excellent anti-inflammatory effect. The magnetite-based micro/nanorobot of the present disclosure does not have obvious cytotoxicity, and exhibits excellent biocompatibility and high safety performance. The magnetite-based micro/nanorobot of the present disclosure allows the responsive release according to different pH values of a gastrointestinal environment. Compared with the traditional drug carriers, the magnetite-based micro/nanorobot of the present disclosure has a high rate and prominent targetability, and can be prepared by a method involving simple steps and easy operations.

Abstract: A method for preparing a clay mineral biomaterial includes: mixing montmorillonite and a potassium permanganate solution to obtain a reaction solution; subjecting the reaction solution to a hydrothermal reaction; and washing and drying a product obtained after the hydrothermal reaction to obtain the clay mineral biomaterial. In the method, montmorillonite is used as a carrier, and nano-scale manganese dioxide particles are allowed to grow in situ on the montmorillonite carrier through a hydrothermal reaction. The nano-scale manganese dioxide particles are well dispersed and fixed on a surface of the montmorillonite carrier, which can prevent the nanoparticles from aggregating.

Abstract: In a halloysite-based composite hemostatic material, hydroxylated halloysite is used as a carrier, and the carrier is loaded with aggregation-induced emission (AIE) nanoparticles. The preparation method includes: preparing the hydroxylated halloysite into a hydroxylated halloysite suspension; preparing the AIE nanoparticles into an AIE nanoparticle solution; and thoroughly mixing the hydroxylated halloysite suspension with the AIE nanoparticle solution at a specified temperature and a specified oscillation speed, centrifuging a resulting mixed solution, and lyophilizing a resulting precipitate to obtain an AIE nanoparticles-loaded modified halloysite composite, which is the halloysite-based composite hemostatic material.

Abstract: A method for preparing for preparing the hemostatic, antibacterial, and healing-promoting clay mineral-based hydrogel in the present disclosure includes: dissolving chitosan uniformly in a dilute acid, adding a preset amount of a crosslinking agent to obtain a first mixture, and stirring the first mixture to allow complete dissolution; and adding a kaolinite@Prussian blue (PB) composite to obtain a second mixture, thoroughly stirring the second mixture, and drying a resulting system at room temperature to obtain the hemostatic, antibacterial, and healing-promoting clay mineral-based hydrogel, where the kaolinite@PB composite includes nano-kaolinite and PB in-situ growing on the nano-kaolinite.

Abstract: A kaolin-based hemostatic gauze comprises: a medical non-woven fabric as a carrier; and a kaolin-containing composite hemostatic material loaded on the medical non-woven fabric, wherein kaolin serves as a carrier in the kaolin-containing composite hemostatic material, the kaolin is doped with Ce and ?-Fe2O3 is loaded on the Kaolin. A method for preparing the kaolin-based hemostatic gauze, includes: S1: preparing the kaolin-containing composite hemostatic material; S2: preparing the kaolin-containing composite hemostatic material into a suspension; S3: impregnating the medical non-woven fabric with the suspension thoroughly stirred, wherein upper and lower sides of the medical non-woven fabric each are impregnated once; and S4: pressing and oven-drying an impregnated medical non-woven fabric to obtain the kaolin-based hemostatic gauze.

Abstract: The kaolinite composite diagnostic and therapeutic agent uses modified kaolinite as a carrier and is loaded with carbon nitride quantum dots and doxorubicin. The present disclosure provides a preparation method of the kaolinite composite diagnostic and therapeutic agent, including the following steps: S1: preparing the modified kaolinite by subjecting the pharmaceutical grade kaolinite to intercalation, exfoliation, and immersion wet etching; S2: subjecting the modified kaolinite and a carbon nitride quantum dot solution to ultrasonication, drying, and grinding to obtain a kaolinite composite containing the carbon nitride quantum dots; and S3: dissolving the doxorubicin in the dark, adding dissolved doxorubicin into the kaolinite composite containing the carbon nitride quantum dots, shaking in the dark for a period of time, and washing and drying to obtain the diagnostic and therapeutic agent containing the carbon nitride quantum dots and the doxorubicin.

Abstract: The kaolinite composite diagnostic and therapeutic agent uses modified kaolinite as a carrier and is loaded with carbon nitride quantum dots and doxorubicin. The present disclosure provides a preparation method of the kaolinite composite diagnostic and therapeutic agent, including the following steps: S1: preparing the modified kaolinite by subjecting the pharmaceutical grade kaolinite to intercalation, exfoliation, and immersion wet etching; S2: subjecting the modified kaolinite and a carbon nitride quantum dot solution to ultrasonication, drying, and grinding to obtain a kaolinite composite containing the carbon nitride quantum dots; and S3: dissolving the doxorubicin in the dark, adding dissolved doxorubicin into the kaolinite composite containing the carbon nitride quantum dots, shaking in the dark for a period of time, and washing and drying to obtain the diagnostic and therapeutic agent containing the carbon nitride quantum dots and the doxorubicin.

Abstract: A guard route security method and a computer readable storage medium are provided. The method includes receiving positioning information of a security guided vehicle and generating a security guided vehicle track; searching a low-position camera and a high-position camera around the security guided vehicle according to the positioning information, and feeding back searching information; and turning on the high-position camera to trace and monitor the security guided vehicle according to the searching information. According to the guard route security method, the security guided vehicle is shot and monitored at a high-position camera monitor to achieve a follow-up control of the security guided vehicle with the high-position cameras, which is convenient for the security guards to quickly learn the surrounding environment and carry out security work for guard route more intuitively and effectively.

Abstract: The present invention provides a camera link method and a computer storage medium. The method includes acquiring a real-time video of a camera, selecting a point in the real-time video as a linked point and acquiring coordinates of the linked point; designating a linked camera; and acquiring a real-time video of the linked camera, and turning on the real-time video of the linked camera or positioning the linked camera to the linked point. According to the camera link method and the computer storage medium of the present invention, linkage among multiple cameras, and automatically linkage to multiple dome cameras can be achieved, and the application range is wide.

Abstract: The present invention belongs to the field of material preparation, and particularly relates to a two-dimensional clay based composite phosphorus removing agent and a preparation method. The two-dimensional clay based composite phosphorus removing agent provided by the present invention takes two-dimensional clay, hydroxide (such as lanthanum hydroxide, calcium hydroxide, magnesium hydroxide and aluminum hydroxide) and urea as raw materials, and the composite phosphorus removing agent with high property is prepared by a roasting method. Through a combined physical and chemical method, phosphorus in the phosphorus-containing wastewater is effectively removed by the synergic interaction between components of the composite phosphorus removing agent.

Abstract: The present invention belongs to the field of material preparation, and particularly relates to a two-dimensional clay based composite phosphorus removing agent and a preparation method. The two-dimensional clay based composite phosphorus removing agent provided by the present invention takes two-dimensional clay, hydroxide (such as lanthanum hydroxide, calcium hydroxide, magnesium hydroxide and aluminum hydroxide) and urea as raw materials, and the composite phosphorus removing agent with high property is prepared by a roasting method. Through a combined physical and chemical method, phosphorus in the phosphorus-containing wastewater is effectively removed by the synergic interaction between components of the composite phosphorus removing agent.

Abstract: The present invention belongs to the field of medical materials. A nano-oxide/kaolin composite hemostatic antibacterial material includes an iron oxide/kaolin composite carrier, and zinc oxide supported on the surface of the composite carrier. The present invention further provides the preparation and application of the composite hemostatic antibacterial material. Furthermore, the present invention provides a hemostatic healing-promoting dressing including the composite hemostatic antibacterial material disclosed by the present invention. The present invention surprisingly finds from research that the zinc oxide and iron oxide/kaolin composite carrier have a synergistic effect, and further cooperated with a special loading morphology, the synergistic effect of the two is unexpectedly enhanced, the hemostatic property and antibacterial property of the material are effectively improved, and moreover, the rate of wound healing is further improved.

Abstract: The disclosure describes a yarn twisting machine in which a hollow spindle rod is fixedly connected with a motor that drives the hollow spindle rod to rotate, a twisting disc and a yarn storage disc are fixedly connected with the hollow spindle rod and rotate along with the hollow spindle rod, the yarn storage disc is provided with yarn outlets, which communicate with inner yarn channels of the hollow spindle rod spindle tanks for accommodating inner yarn packages are connected with the hollow spindle rod through spindle rod bearings, and the spindle tanks are immobile.

Abstract: The present invention discloses an iron oxide/nanokaolin composite hemostatic agent and a preparation method thereof. The composite hemostatic agent is composed of nanokaolin and iron oxide, where the nanokaolin is used as a carrier, and the iron oxide is loaded on a surface of a nanokaolin flake. The composite hemostatic agent is obtained by a precipitation method. The composite hemostatic agent has the advantages of good hemostatic effect, rapid wound healing, no obvious cytotoxicity, no hemolysis, high biocompatibility, and the like.

Abstract: The present invention relates to a carpet yarn twisting machine, comprising a machine frame, a creel unit (1), an electric spindle unit (5), an overfeeding unit (4) and a reeling unit (3), in the electric spindle unit (5), a hollow spindle rod (502) is fixedly connected with a motor (501), the motor (501) drives the hollow spindle rod (502) to rotate, a twisting disc (506) and a yarn storage disc (505) are fixedly connected with the hollow spindle rod (502) and rotate along with the hollow spindle rod (502), the yarn storage disc (505) is provided with yarn outlets (504), which communicate with inner yarn channels of the hollow spindle rod (502), spindle tanks for accommodating inner yarn packages (15) are connected with the hollow spindle rod (502) through spindle rod bearings (509), and the spindle tanks are immobile.

Abstract: A composite catalyst, including: a) dispersed and cationic surface modifier-modified attapulgite as a catalyst carrier; and b) nano-Au as an active ingredient. The nano-Au accounts for 0.5-1.5 wt. % of the attapulgite. An average diameter of the attapulgite is 18-22 nm, and a length thereof is 100-1000 nm. A particle diameter of the nano-Au is 1-7 nm. The composite catalyst has a low activation temperature and high performance-to-price ratio, and can be used for oxidation of organic pollutants in waste gas under low temperatures and also has excellent catalytic effects on organic pollutants in waste fluid. A preparation method of the composite catalyst is also provided.