140 results about "Ultrasonic emulsification" patented technology

The invention relates to the field of surgical robots, and particularly discloses an intraoperative risk assessment system for a cataract surgical robot, comprising: a patient biomechanical monitoring unit for collecting a contact force between an instrument and an eye tissue, and calculating an anterior chamber equivalent pressure value according to an axial force component of the contact force and a contact area between the instrument and a cornea; the patient optical imaging monitoring unit is used for collecting microstructure images of the cornea and the lens capsule and quantifying the energy release density of ultrasonic emulsification; the robot motion parameter monitoring unit is used for collecting joint motion resistance, instrument tail end three-dimensional coordinates, motion speed and attitude angle of the robot; the multi-mode joint reasoning unit is used for identifying a high-risk operation state when the contact force is higher than a first preset value and the energy release density is higher than a second preset value; by adopting the technical scheme of the invention, multi-dimensional real-time monitoring can be realized, and a dynamic risk prediction model can be established by fusing heterogeneous data through an intelligent algorithm.

The utility model discloses a negative pressure suction device for taking a dislocated intraocular lens. The negative pressure suction device mainly comprises a suction catheter, a catheter seat, a butt joint seat, an extension tube, a negative pressure generation device and a negative pressure control device, wherein the combined structure of the suction catheter and the catheter seat can be realized by directly adopting a 22G venous indwelling needle catheter, the combined structure of the suction catheter and the catheter seat is connected to the extension tube through the butt joint seat, the combined structure of the negative pressure generation device and the negative pressure control device can be realized by directly adopting an ultrasonic emulsification and vitreous body cutting machine and a matched pedal controller, and the extension tube is in butt joint with a negative pressure port of the extension tube. The negative pressure is adjusted through the pedal controller, the intraocular lens dislocated to the vitreous cavity is attracted to the pupil area, and damage to the retina in an operation is avoided. The device has the advantages of simplicity and convenience in operation, controllable negative pressure, small trauma and the like, is suitable for minimally invasive extraction or reduction of a dislocated intraocular lens in clinic, and is wide in adaptability.

The invention discloses a core-shell nano-enzyme composite spray gel dressing and a preparation method and application thereof.The dressing comprises a component A prepared from sodium alginate, N-isopropylacrylamide PNIPAM, core-shell nano-enzyme and curcumin and a component B of a divalent metal salt solution, and the component A and the component B are sprayed at the same time to form the core-shell nano-enzyme composite spray gel dressing. The preparation method of the core-shell nano enzyme comprises the following steps: mixing potassium ferrocyanide, ferric trichloride and polyvinylpyrrolidone to obtain a Prussian blue nano particle precursor solution; carrying out ultrasonic emulsification treatment and replacement on the curcumin core solution and the Prussian blue nanoparticle precursor solution; and freeze-drying to obtain the core-shell nano-enzyme. Through rapid ionic crosslinking of sodium alginate and divalent metal ions and the temperature-sensitive phase change characteristic of the temperature-sensitive polymer poly (N-isopropylacrylamide), the gel dressing is rapidly formed, the damaged skin is effectively covered and protected, the excellent antioxidant, anti-inflammatory and antibacterial capabilities are achieved, and the healing cycle of the radiodermatitis wound can be remarkably shortened.

The invention relates to the technical field of water-absorbent resin, in particular to salt-resistant water-absorbent resin and a preparation method thereof. The preparation method comprises the following steps: weighing acrylic acid, acrylamide, sulfobetaine methacrylate, hexadecyl dimethyl allyl ammonium chloride, sodium alginate, a cross-linking agent, an initiator, an antioxidant, an emulsifier, polyethylene glycol diacrylate and nano montmorillonite; carrying out ultrasonic emulsification on hexadecyl dimethyl allyl ammonium chloride and an emulsifier in ethanol; mixing neutralized acrylic acid, acrylamide and sulphobetaine methacrylate, and introducing nitrogen to remove oxygen; adding sodium alginate for dissolving, and injecting the microemulsion and the organic montmorillonite; adding a cross-linking agent and polyethylene glycol diacrylate, and adding an initiator and an antioxidant; and cross-linking, drying and sieving to obtain a finished product. According to the invention, by reducing the proportion of the ion-sensitive components and forming a salt-resistant interpenetrating network through the organic montmorillonite, the salt resistance of the water-absorbent resin is ensured.

The invention discloses a layered volatilization sleep-aiding essential oil product based on lavender essential oil and sandalwood essential oil and a preparation method of the layered volatilization sleep-aiding essential oil product. The preparation method comprises the following steps: mixing a high-volatility essential oil component and a low-volatility essential oil component with a natural emulsifier according to a specific ratio, carrying out an ultrasonic emulsification technology to obtain a nano-emulsion, and drying the nano-emulsion to prepare the microcapsule essential oil particles. According to the invention, different volatile components are coated by a specific emulsification method to reduce the volatilization loss and improve the stability, and layered slow release with synchronous starting and controllable speed is realized by utilizing the difference between high and low volatility; wherein the high-volatility component is quickly released in the early stage to provide an instant tranquilizing and allaying excitement effect, and the low-volatility component is slowly released in the later stage to provide a continuous sleep aiding effect. The layered volatile sleep-aiding essential oil product based on the lavender essential oil and the sandalwood essential oil provided by the invention is good in stability, has the advantages of rapid effect taking, lasting controlled release, uniform volatilization, good skin compatibility and the like, and can be used for preparing more sleep-aiding and nerve-soothing products.

The preparation method of the high-temperature-creep-resistant nano-composite pressure vessel steel comprises the following steps that a lead sulfide precursor is dissolved in an organic solvent, and heating reaction is conducted under the inert gas condition to generate lead sulfide quantum dots; mixing quantum dots with amphiphilic molecules, and performing ultrasonic emulsification to form a quantum dot colloidal solution; mixing the quantum dot colloidal solution with supercritical carbon dioxide to form a homogeneous fluid phase; the steel matrix is placed in a high-pressure reaction kettle, the homogeneous fluid phase is introduced, permeation is conducted for 2-4 h under the conditions that the pressure is 10-15 MPa and the temperature is 50-70 DEG C, and a steel billet is obtained; the steel billet is placed in hot isostatic pressing equipment, heat preservation and pressure maintaining are conducted for 1-2 h in the inert gas environment under the conditions that the pressure ranges from 150 MPa to 200 MPa and the temperature ranges from 800 DEG C to 900 DEG C, and then the steel billet is cooled to the room temperature; semiconductor quantum dots are introduced into a metal matrix, atomic-scale interface strengthening is achieved through the quantum effect and the supercritical fluid permeation technology, and the steady-state creep rate of the material at the temperature of 600 DEG C can be reduced to 1 / 10 of that of a traditional process by combining the microcosmic strengthening advantage of the quantum dots and the macroscopic permeation advantage of supercritical fluid.

This invention belongs to the field of manganese dioxide recovery, and particularly relates to a polymeric flocculant and its preparation method. The method includes: (1) mixing an inorganic polymeric coagulant, a linear polymeric polymer, and silica in a certain proportion to form a mixture, dissolving it in water, and adding an initiator to carry out a low-temperature thermal reaction to prepare a precursor; (2) mixing a crosslinking agent, ethanol, nitric acid, and polymeric aluminum iron silicate in a certain proportion, drying and grinding to prepare a prepolymer; (3) mixing the precursor and the prepolymer in a certain proportion, ultrasonically emulsifying to prepare a polymeric flocculant. This invention has a good flocculation and adsorption effect, and can effectively remove impurities in electrolyte raw materials, especially metal ion impurities, while avoiding the loss of manganese ions during the removal of metal ion impurities.

The invention discloses an efficient flame-retardant fire extinguishing agent for rapidly extinguishing a lithium battery fire and a preparation formula, and relates to the technical field of fire fighting. The fire extinguishing agent is composed of a liquid-phase component and a solid-phase component, wherein the liquid-phase component comprises ethylene glycol, triethanolamine, fluoroalkyl betaine, sodium dodecyl benzene sulfonate, a phosphate flame retardant, an orange peel extracting solution and purified water; the solid-phase component comprises dodecyl sulfate, ammonium phosphate, potassium perchlorate, sodium carboxymethyl cellulose, polyacrylamide, benzotriazole and the like. The method comprises the following steps: drying and activating solid-phase components after graded crushing, and stirring in a nitrogen atmosphere; carrying out segmented treatment on liquid-phase components, and carrying out ultrasonic emulsification on an orange peel extracting solution; and after solid-liquid mixing, carrying out vacuum defoaming, high-speed shearing dispersion and homogenization treatment. According to the lithium battery fire extinguishing agent, component particle sizes with different dissolution rates are matched through graded crushing, nanoscale dispersion is achieved through ultrasonic emulsification, the bubble residual rate is reduced through vacuum defoaming, and the problems that a traditional lithium battery fire extinguishing agent is low in insulativity, low in cooling efficiency and insufficient in flame retardant efficiency are solved.

The utility model discloses a high-frequency ultrasonic fat emulsification instrument which comprises a high-frequency ultrasonic host, an ultrasonic emulsification treatment knife and a radio frequency electrode, the radio frequency electrode is connected with a high-frequency output interface, the ultrasonic emulsification treatment knife is connected with an ultrasonic output interface through a transducer, a plurality of annular grooves are formed in a knife head of the ultrasonic emulsification treatment knife, and the ultrasonic output interface is connected with the ultrasonic output interface through a transducer. The front end of the scalpel head is hemispherical, and a plurality of electrodes distributed in an array are arranged on the contact surface of the treatment head of the radio frequency electrode; a temperature sensor is also arranged in the treatment head of the radio frequency electrode; the scalpel head is not provided with a cutting edge, damage to normal tissue cannot be caused in the using process, the annular groove can increase the contact area, the emulsification effect is higher, and the treatment time is shorter; according to the radio frequency electrode provided by the utility model, radio frequency current can be more uniformly and fully distributed in tissues; according to the utility model, the radio frequency equipment and the ultrasonic equipment are combined on one high-frequency ultrasonic host, so that the occupied volume of the instrument is effectively reduced.

The invention relates to the technical field of mineral flotation dosing devices, in particular to an ultrasonic multi-stage rapid mixing, stirring and dosing device. Through the combination of the stirring impeller and the ultrasonic emulsification device, a medicament can be effectively stirred and ultrasonically emulsified, so that the medicament is mixed more uniformly and dispersed more meticulously, and the activity of the medicament is improved; and the spiral flow deflector on the inner wall of the atomization channel can enable the medicament to rotate in the flowing process, so that the mixing effect and the atomization degree of the medicament are further enhanced, the dosing efficiency and accuracy are improved, the dosing quality is ensured, and the use requirements of different working conditions are met.

The present invention discloses a method and device for preparing electronic slurry for multilayer ceramic capacitor electrodes with uniform particle size distribution, high yield and production efficiency, and good continuity of the slurry layer after sintering and film formation. The method for preparing electronic slurry for multilayer ceramic capacitor electrodes specifically includes the following preparation steps: (1) ultrasonic emulsification dispersion; (2) grinding dispersion; (3) centrifugal classification; (4) filtration; (5) stirring replacement; and (6) distillation concentration. The device used in the preparation method includes an ultrasonic emulsification kettle, a grinder, a rotary vibrating screen, a centrifuge, a filter, a stirring kettle, and an evaporation concentration device connected by a pipeline. A peristaltic pump is installed on the pipeline connecting the ultrasonic emulsification kettle and the grinder, and a peristaltic pump is installed on the pipeline connecting the rotary vibrating screen and the centrifuge. The evaporation concentration device includes a heating kettle, a condenser, a storage tank, and a vacuum pump connected by pipelines in sequence. The outer layer of the ultrasonic emulsification kettle is provided with a jacket.

The application discloses an ultrasonic emulsification perfusion assembly, which comprises a metal connector, a plastic needle tube arranged in the metal connector, a metal perfusion sleeve provided with a water inlet and a perfusion port, and a plastic clamping perfusion sleeve which is sleeved outside the metal perfusion sleeve and forms a liquid storage space, wherein the water inlet is arranged in the liquid storage space. The application has the following beneficial effects: the slender needle head of the plastic needle tube can improve the stability of the anterior chamber and reduce the probability of surge occurrence; the relatively soft plastic needle head tip can also reduce the probability of puncturing the lens capsule; the metal perfusion sleeve effectively separates the ultrasonic emulsification needle tube body from the extrusion of the incision, greatly reduces or even eliminates the incision burn caused by ultrasonic friction; the relatively hard metal perfusion sleeve effectively prevents the perfusion liquid from being reduced or blocked due to the extrusion or distortion of the incision, thereby improving the stability of the anterior chamber and reducing the probability of surge occurrence.

The application provides a preparation method and application of resveratrol-polylactic acid microspheres, and relates to the technical field of biological agents, quantitative resveratrol is dissolved in methanol as O1 phase; quantitative polylactic acid is dissolved in an oil phase solution (ethyl acetate, dichloromethane, trichloromethane) as O2 phase; ammonium bicarbonate, sodium bicarbonate, sodium chloride and hydrogen peroxide are used as a porogen; O1 phase, O2 phase and the porogen solution are subjected to ultrasonic emulsification to obtain O / O primary emulsion; the O / O primary emulsion is added to a polyvinyl alcohol aqueous solution under stirring to obtain O / O / W multiple emulsion; the obtained O / O / W multiple emulsion is subjected to mechanical stirring to remove the oil phase solution in the O / O / W multiple emulsion, and then is subjected to standing, centrifugation, washing, drying and the like to obtain resveratrol-polylactic acid microspheres with uniform size. The resveratrol-polylactic acid microspheres of the application break through the bottleneck of poor water solubility of resveratrol, can effectively prolong the drug action time, and have good antibacterial effect.

The application relates to the field of food preservation, in particular to a natural bacteriostatic material and a preparation method and application thereof, and a preparation method of the natural bacteriostatic material, which comprises the following steps: mixing natural gelatin and dextran with deionized water, stirring, and freeze-drying to obtain a gelatin-dextran mixture powder, wherein the mass ratio of the natural gelatin to the dextran is 1-2:1-4, and the molecular weight of the dextran is 150-200 kDa; performing a glycosylation reaction on the gelatin-dextran mixture powder to obtain a gelatin-dextran conjugate; dissolving the gelatin-dextran conjugate in a buffer solution to obtain an emulsifier; and homogenizing edible essential oil, the emulsifier and deionized water, and performing ultrasonic emulsification to obtain the natural bacteriostatic material. The preparation method is simple, the conditions are simple, the prepared natural bacteriostatic material has good stability, and the shelf life of food can be prolonged.

The invention relates to a composite hydrogel slow-release adhesive as well as a preparation method and application thereof, and relates to the technical field of natural high polymer materials. The preparation method comprises the following steps: (1) dissolving tripterine with a solvent to obtain a tripterine solution; (2) mixing the tripterine solution with a polyethyleneimine aqueous solution, and carrying out ultrasonic emulsification to obtain a tripterine-polyethyleneimine nano suspension; and (3) adding a hydrogel material into the tripterine-polyethyleneimine nano suspension, so as to prepare the hydrogel slow-release adhesive. According to the preparation method disclosed by the invention, a novel medicine carrying material for effectively repairing the infected wound surface by carrying the tripterine is realized, the medicine is continuously applied to act on the infected wound surface, and the tripterine is lastingly and slowly released to repair the infected wound surface while the wound surface is effectively protected and ulcerative focuses are sealed.

Provided is a preparation method for an adiposome, comprising the following steps: S1) subjecting polar lipids and neutral lipids to intermittent ultrasonic emulsification in a buffer solution to obtain a crude emulsion; and S2) purifying the crude emulsion to obtain the adiposome. Compared with the prior art, the present invention uses an ultrasonic emulsification method to prepare the adiposome, so that the quality of the adiposome prepared in different batches is controllable, and the preparation of the adiposome can be efficiently completed. Moreover, high-energy mechanical vibration and ultrasonic cavitation effects of ultrasonic waves are utilized in the ultrasonic emulsification method to widen the selection of raw materials for adiposomes, so that the method can be used to not only prepare an adiposome with unsaturated fatty acid chain phospholipids and neutral lipids as raw materials, but also synthesize an adiposome with saturated fatty acid chain phospholipids, neutral lipids, or high-melting-point lipids as raw materials. In addition, the utilization of raw materials can be improved, and the scale of adiposome production can be expanded.

The present invention discloses a microelectronic device temperature control and heat dissipation system based on vapor-liquid phase change nanoemulsion boiling heat transfer, which relates to the field of thermal management technology of microelectronic devices, including a fan radiator, a circulating water pump, a controllable ultrasonic emulsification module and a heat exchanger connected in sequence. The water-cooled heat dissipation system adopts a vapor-liquid phase change nanoemulsion with phase change function (ultrapure water as a continuous phase and a low-boiling organic fluoride as a dispersed phase) as a heat exchange medium, and the configured emulsion is pre-filled into the pipeline of the water-cooled heat dissipation system. The controllable ultrasonic emulsification module is used to perform real-time online regulation of the emulsion parameters to match the heat dissipation requirements of the microelectronic device. By replacing the heat exchange medium of the water-cooled heat dissipation system, the heat dissipation performance is significantly improved compared with single-phase flow heat exchange under the same pump work and the same flow conditions, and the efficient temperature control and heat dissipation requirements of microelectronic devices with a junction temperature not exceeding 85°C are met, and the safe and stable operation of the microelectronic devices under the trend of miniaturization and high integration is guaranteed.

1. The name of the design product: ultrasonic emulsification instrument for ophthalmology. 2. The use of the design product: used in ophthalmic operating room, the operation equipment for cataract lens core fragmentation, perfusion and suction and anterior segment vitrectomy and electrocoagulation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The invention belongs to the technical field of biological medicine, and particularly relates to a Pickering emulsion with stable protein-polyphenol coating modified particles and a preparation method and application thereof.The preparation method comprises the following steps that protein and polyphenol are used for modifying solid particles, and the protein-polyphenol coating modified particles are obtained; dispersing the protein-polyphenol coating modified particles in water to obtain a dispersion liquid of the protein-polyphenol coating modified particles; and mixing the dispersion liquid with an oil phase, and carrying out high-speed homogenization or ultrasonic emulsification to obtain the Pickering emulsion. By adopting the preparation method to effectively modify the solid particles, not only can the inherent properties of the solid particles and the structure and function of protein be maintained, but also the Pickering emulsion prepared from the modified particles is uniform in droplet size and has excellent storage stability, and the service life of the Pickering emulsion is prolonged. The antioxidant and anti-inflammatory characteristics of polyphenol and the catalysis functions of protein are realized.

In certain embodiments, a surgical handpiece system includes a phacoemulsification tip, a fluid management system, an ultrasound drive system, and a controller. The phacoemulsification tip is attached to the shaft. The fluid management system is configured to manage inflow and outflow of fluid from an ocular surgical site. The ultrasonic drive system is configured to generate torsional and longitudinal vibrations in the phacoemulsification tip. The controller is configured to analyze a voltage and a current applied to the ultrasonic drive system using fast Fourier transform (FFT), and tune an application frequency of the torsional vibration and the longitudinal vibration according to at least one resonant frequency.

The invention discloses long-acting slow-release antibacterial preservative paper based on Pickering emulsion and a preparation method of the long-acting slow-release antibacterial preservative paper. The long-acting slow-release antibacterial preservative paper comprises a paper-based carrier and an antibacterial functional layer, wherein the surface of the paper-based carrier is coated with the antibacterial functional layer; the antibacterial functional layer is formed by mixing a Pickering emulsion and a polyvinyl alcohol / gelatin composite base material to form a film; the Pickering emulsion is prepared by taking Tempo oxidized nanocellulose and ethyl lauroyl arginate hydrochloride water suspension as a water phase and performing ultrasonic emulsification on the water phase and origanum vulgare essential oil according to an oil-water volume ratio of 1: 9; wherein the mixing ratio of the Pickering emulsion to the composite base material is (30 to 50): 50; the mass percent concentration of the Tempo oxidized nanocellulose in the water-phase suspension liquid is 0.2 wt%, and the mass percent concentration of the ethyl lauroyl arginate hydrochloride in the water-phase suspension liquid is 0.01 wt%. Through material innovation and process optimization, the antibacterial property, the slow release property, the environmental protection property and the industrial application are remarkably superior to those of the prior art, and an efficient and reliable solution is provided for green packaging in the fields of food, medicine and the like.

The invention discloses a microemulsion collecting agent for flotation of high-mud-content and high-oxidation molybdenite and preparation and application of the microemulsion collecting agent and belongs to the technical field of mineral processing, kerosene, xanthate or black powder collecting agents, a main emulsifier, a cosurfactant and water are mixed according to a certain proportion and then subjected to ultrasonic emulsification treatment, and the microemulsion collecting agent is obtained. According to the micro-emulsion collecting agent prepared through the method, after one-time roughing and two-time scavenging are conducted, the molybdenum recovery rate is remarkably increased compared with the molybdenum recovery rate when a kerosene collecting agent is singly used, the micro-emulsion collecting agent is simple in preparation method, high in emulsion stability, high in dispersity in ore pulp and free of slime interference, and the separation and recovery problem of high-argillization molybdenite is well solved.

The invention discloses a preparation method of a bionic magnetic nano-motor mixed and wrapped by a neutrophile granulocyte membrane and a stem cell exosome. The bionic magnetic nano-motor comprises the neutrophile granulocyte membrane, the stem cell exosome, a polylactic acid-glycolic acid copolymer and an anti-inflammatory drug. According to the method, a layer of polylactic acid-glycolic acid copolymer is wrapped outside magnetic ferroferric oxide nanoparticles and an anti-inflammatory drug by utilizing an ultrasonic emulsification method, and finally the polylactic acid-glycolic acid copolymer is wrapped by utilizing a neutrophile granulocyte membrane and a stem cell exosome, so that the bionic magnetic nano motor is obtained, and the motor has good biocompatibility. Meanwhile, the motor has an immune escape function and can resist phagocytosis of macrophages in blood. And under the control of an external alternating magnetic field, the medicine can accurately reach a spinal cord injury part, and the effects of inflammation inhibition and neuron recovery can be achieved under the mixed action of neutrophile granulocyte membranes, stem cell exosomes and anti-inflammatory drugs.

The utility model discloses an improved capsular bag tension section which comprises a main body ring, the whole main body ring is in an arc shape, the span of a main body is 120 degrees, clamping positioning holes are formed in the two ends of the main body ring, the main body ring and the clamping positioning holes are connected in a smooth transition mode, and a sclera fixing hook is arranged on the inner side of the middle of the main body ring. According to the utility model, fixed support can be realized in a small-range area of the capsular bag, permanent support can be realized through sclera suture, a plurality of capsular bag tension sections can be used in the same capsular bag when necessary, and when circumferential support is needed, the capsular bag tension sections can be combined with a capsular bag tension ring for use, so that the use is convenient. According to the utility model, 360-degree expansive force cannot be generated, the device can be used for suspension ligament fracture in a larger range, the stable capsular bag can be used before cataract ultrasonic emulsification, the tension section of the capsular bag can be implanted after a crystalline lens is sucked away, and the device is particularly suitable for children with small capsular bag diameter and incomplete dislocation of crystalline lens or small spherical crystalline lens patients.

The application provides a micro-liquid injection system and a method thereof, and relates to the technical field of medical devices, and solves the technical problem of inconvenient use of an injection device for subretinal drug injection used in the prior art. The system comprises an injection cylinder, a piston, a connecting hose, a transfusion connector, a needle, and a connecting piece. The piston is arranged in the injection cylinder. The injection cylinder is connected with the needle through the transfusion connector and the connecting hose. The injection cylinder is connected with a vitreous body cutting and ultrasonic emulsification integrated machine (hereinafter referred to as a vitreous body cutting machine) through the connecting piece. The application provides a micro-liquid injection system. By adding the transfusion connector, unidirectional conduction and instantaneous positive pressure can be generated, so that the injection of bubbles can be avoided as much as possible when an ophthalmologist or the like performs drug injection. The connecting hose is arranged between the injection cylinder and the needle, the distance between the injection cylinder and the needle is increased, and a nurse can observe the display on the syringe to remind the doctor of the drug injection amount.

The invention relates to the technical field of textile manufacturing and daily necessities, in particular to a fabric containing bacteriostatic microspheres and a preparation method of the fabric. The preparation method of the fabric comprises the following steps: dissolving the plant extraction type bacteriostatic agent in pure water with the pH value of 8.5-9.5 and the temperature of more than or equal to 80 DEG C to form a bacteriostatic agent solution; polymerizing polylactic acid and polyethylene glycol according to the mass ratio of (25-35): (65-75) to generate a PLA-PEG (Polylactic Acid-Polyethylene Glycol) copolymer as a capsule wall material; mixing the two solutions, and performing ultrasonic emulsification, atomization, drying and cooling to obtain the antibacterial microspheres. Dissolving in RO-grade water to form a solution, and dipping, dehydrating and drying the fabric to obtain a finished product. According to the method, the activity of the bacteriostatic agent and the stability of the microspheres are guaranteed by accurately controlling technological parameters, and the prepared fabric is uniform and lasting in bacteriostatic effect, is suitable for preparation of daily necessities such as soft cotton towels and wet tissues, and has both safety and industrial suitability.

The present invention relates to an ophthalmic ultrasonic emulsification sleeve for confirming intraocular and extraocular penetration and perfusion, which allows determining whether aqueous humor communication between the inside and outside of the eye is smooth through a microtube implanted in the eye during glaucoma tube surgery. The sleeve is characterized by having a rigid branch tube made of a material harder than a sleeve made of a soft material, provided in a perfusion port that allows the injection of a balance salt solution into the eye, and with the branch tube connected to the perfusion port, the tip of the branch tube protrudes further than the tip of the Paco tip, and the end of the microtube inside the eye is connected to the tip of the branch tube, so that the establishment of aqueous humor communication of the microtube can be quickly and accurately and sensorially confirmed based on the pattern of pressure change in the conjunctival area and surrounding blood flow change that occurs when the balance salt solution leaks out of the eye.

The invention relates to the technical field of green prevention and control of stored grain pests, in particular to a nano-emulsion for preventing and controlling stored grain pests, namely panonychus rustinae, as well as a preparation method and application of the nano-emulsion. According to the preparation method of the nano-emulsion provided by the invention, the dispersing capacity and the stability of the garlic essential oil in water are improved through embedding of the natural tea saponin; meanwhile, a low-temperature ultrasonic emulsification technology is adopted, so that the activity loss of essential oil is effectively avoided. The preparation process is simple, the prepared nano-emulsion adopts the tea saponin and the garlic essential oil to achieve a synergistic effect, the control efficiency can be effectively improved, the contact killing rate of the nano-emulsion on prymaria rugosa is larger than or equal to 97%, and the fumigation death rate is larger than or equal to 98%. Meanwhile, the tea saponin and the plant essential oil are adopted as core components of the nano-emulsion, the components are natural, the environmental safety is high, and the risk that residues exceed the standard is avoided, so that an industrialized feasible solution can be provided for a green grain storage technology, and the nano-emulsion is particularly suitable for closed / semi-closed storage scenes such as grain storage warehouses, farm granaries and household granaries.

The invention discloses a monodisperse polymer porous microsphere and a preparation method thereof, the preparation method comprises the following two steps: 1, seed microsphere swelling: carrying out ultrasonic emulsification swelling on an emulsifier, a pore-foaming agent, a swelling agent, monomer styrene and a cross-linking agent divinyl benzene, and reaching swelling equilibrium after a period of time; and 2, adding a stabilizer, and heating to enable styrene and divinyl benzene to generate polymerization reaction to obtain larger polymer microspheres. The particle size of the polymerized microspheres can reach 10-20 microns, the uniformity is good, the requirements of monodisperse microspheres can be met, and the experimental method is easy and convenient to operate, good in process stability and reproducibility and very suitable for industrial production.

This application provides a method for preparing modified anthracene oil for carbon black production, comprising the following steps: Step S1: Introducing ozone into the anthracene oil for ultrasonic emulsification to obtain an emulsion mixture, wherein: ultrasonic frequency: 20–40 kHz; ultrasonic power density: 0.5–0.8 W / cm³ 2 Ultrasonic working time: 1–1.5 h; bubble residence time: 10–15 s; bubble diameter: 50–100 μm; O3 / anthracene oil gas-liquid volume ratio: 0.1–0.3:1; Step S2: The emulsified mixture is alternately subjected to mechanical stirring and ultrasonic emulsification, wherein: ultrasonic frequency: 40–70 kHz; ultrasonic power density: 0.8–1.2 W / cm³ 2 O3 / anthracene oil gas-liquid volume ratio: 0.3–0.5:1; bubble diameter: <30 μm; total working time for mechanical stirring and ultrasonic emulsification: 1.5–2 h. Step S3: Dehydration to obtain modified anthracene oil. The modified anthracene oil obtained in this application has good compositional uniformity, is not prone to stratification, and has few by-products, thus meeting the requirements for raw materials in the production of high-quality carbon black.