35results about How to "Improve release efficiency" patented technology

The invention relates to the technical field of biological medicines, in particular to a soluble skin-adhering microneedle for delivering an inactivated enterovirus vaccine as well as a preparation method and application of the soluble skin-adhering microneedle. Sodium hyaluronate is adopted as a film forming material to wrap an enterovirus 71 type (EV71)-coxsackie virus A16 (CA16) type bivalent inactivated vaccine antigen, and a needle body layer of the soluble microneedle is formed; the substrate layer is prepared from a pullulan material, so that the microneedle patch with a stable overall structure is formed. The technology provided by the invention is completed in a clean environment, and the vaccine patch which is qualified through sterility detection is obtained. The soluble microneedle disclosed by the invention has good antigen stability under the condition of 2-8 DEG C. In animal experiments, the microneedle is attached to the skin surface of a mouse for skin-adhering immunization, a strong immune response reaction can be induced, good immunogenicity is shown, and a novel, safe and effective vaccine delivery way is provided for prevention and control of the infantile hand-foot-and-mouth disease.

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment system and method for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatment.The sewage treatment system for photocatalytic coupling biological treatmentcomprises a pretreatment unit, a photocatalytic unit, an electrochemical biological unit, a post-treatment unit and an intelligent control unit, the pretreatment unit comprises a microwave-ozone coupling reactor and a magnetic adsorption column; the photocatalysis unit comprises a dual-band reaction tower; the electrochemical biological unit comprises a three-dimensional electrode biological membrane assembly and a FeS2 filler layer, the anode of the three-dimensional electrode biological membrane assembly is boron-doped diamond, and the cathode of the three-dimensional electrode biological membrane assembly is a carbon felt of anaerobic ammonium oxidation bacteria. Through multi-stage cooperative treatment, heavy metal ions and organic matters in the sewage are effectively removed, the removal rate of the heavy metal Cr (VI) is greater than 99.9%, the removal rate of the refractory organic matter benzene is greater than 99.9%, and the method has multi-scene applicability and efficient treatment capacity.

The invention belongs to the technical field of isotope recovery and separation, and discloses a method for recovering high-abundance C13 carbon dioxide from C13 urea based on acidic constant-temperature hydrolysis. According to the method, the hydrolysis rate of the C13 urea is maintained by selecting proper dilute sulfuric acid concentration, sulfate radicals and urea are prevented from forming an adduct by controlling the dilute sulfuric acid concentration, the release efficiency of the 13CO2 is increased, the reaction rate is controlled, and side reaction is avoided. The invention further provides a set of reaction device for recycling 13CO2 through acidic constant-temperature hydrolysis of C13 urea under reduced pressure, the gas-liquid phase contact area and residence time are remarkably increased by arranging the rectifying column, visual water removal and low temperature are realized through the water removal column and the condenser pipe, the problems of external CO2 pollution, high impurity air content and relatively high water content are solved, and the method is suitable for industrial production. And high abundance recovery of the 13CO2 is ensured.

The invention belongs to the technical field of preparation of traditional Chinese medicine decoction pieces, and particularly relates to a preparation method of natural musk decoction pieces and a product. According to the living body musk deer incense taking method, a single musk deer can continuously produce incense for 10 years (2-12 years old), 15-20 g of incense is produced every year, compared with musk deer killing and incense taking, the resource utilization rate is increased by 10 times or above, the poaching pressure of the wild musk deer is directly reduced, and species protection is assisted; the retention rate of musk ketone can be greater than or equal to 90% through vacuum freeze drying, and the release efficiency of medicinal components is further improved through low-temperature superfine grinding; furthermore, through a modern detection technology, it is ensured that the muscone content reaches the standard, no harmful residues exist, and the medication risk caused by experience identification errors is avoided; furthermore, the raw material farm, the production parameters and the inspection report can be inquired in real time through the identification of one object and one code, so that the authenticity of the product is guaranteed. The process disclosed by the invention can be popularized to production of other valuable and rare traditional Chinese medicine decoction pieces, and the traditional Chinese medicine industry is promoted to develop towards standardization, modernization and sustainability.

This invention discloses a method and system for detecting moisture in soft capsules. Based on water activity, the method improves efficiency and quality by detecting the moisture content of soft capsules. The method includes: selecting a water activity meter; selecting capsules of the same mass as the sample to be tested as the test object, with the quantity being the sample size recommended in the water activity meter's instruction manual; controlling the environmental conditions between the laboratory and the workshop control room; determining the detection time T for the relative humidity of intact capsules to reach equilibrium; during the capsule drying process, sampling capsules at different drying degrees and simultaneously detecting the moisture and water activity values ​​of the samples using a halogen moisture meter and a water activity meter; collecting data from several batches of capsules and obtaining a data model for moisture and water activity values ​​through fitting; calculating the acceptable water activity range for the soft capsules and using this acceptable water activity range as the judgment standard for the sample to be tested.

This invention relates to the field of intestinal health regulation technology, and discloses a method for preparing and applying a composition containing *Anoectochilus roxburghii* (a type of orchid) to improve intestinal health. The composition, by weight, includes the following components: 8-25 parts of *Anoectochilus roxburghii* complex extract, 5-20 parts of fermented *Anoectochilus roxburghii* prebiotics, 20-60 parts of complex prebiotics, and 1-10 parts of pre-adapted probiotic powder. The *Anoectochilus roxburghii* complex extract is composed of *Anoectochilus roxburghii* polysaccharide fraction and *Anoectochilus roxburghii* alcohol extract composite fraction. The alcohol extract composite fraction is a complex formed by the alcohol extract of *Anoectochilus roxburghii* and phospholipids. The mass ratio of the alcohol extract composite fraction to the polysaccharide fraction is 1:(1-4). This invention overcomes the technical problems of low utilization rate of *Anoectochilus roxburghii* active ingredients, poor probiotic environmental tolerance, and limited dispersibility of active substances in existing intestinal health improvement products. This invention constructs a composite system that combines improved utilization of active ingredients, enhanced stability of live bacteria, and improved overall intestinal health improvement capabilities.

The invention relates to the field of chip packaging, and discloses chip feeding equipment and a chip feeding method.The chip feeding equipment comprises a chip feeding assembly, the chip feeding assembly comprises a chip feeding roller, a lifting assembly and a chip ejecting assembly, the chip feeding roller is rotationally connected to the lifting assembly, the lifting assembly is used for driving the chip feeding roller to ascend and descend, and the chip ejecting assembly is used for ejecting the chip to the chip feeding roller; a plurality of through holes are formed in the chip feeding roller in an array mode, chip adsorption heads are connected into the through holes in a sliding mode and used for adsorbing chips, the chip ejection assembly is arranged in the chip feeding roller and used for ejecting out the chip adsorption heads, and when the chip adsorption heads are ejected out of the chip feeding roller, pressure is released so as to release the chips. A feeding roller cavity is formed in the chip feeding roller, the end of the chip feeding roller is connected with a vacuum suction assembly in a sealed mode, an air guide hole is formed in the chip adsorption head, an air inlet and an air outlet of the air guide hole are formed in the side direction of the chip adsorption head, and the air guide hole extends to the tail end of the chip adsorption head to form an adsorption opening. According to the invention, the efficiency of the chip packaging process can be improved.

The application discloses a virtual object control method, device and equipment, and a storage medium, and relates to the technical field of computers and the Internet. The method comprises the following steps: displaying a first virtual object in a virtual environment; in response to a first operation, displaying a first mark in the virtual environment, the first mark being used for visualizing the marking of a first selected position in the virtual environment, and the first operation being used for controlling the first virtual object to release a first skill; after determining N action targets of the first skill based on the first selected position, displaying a second mark in the virtual environment, the second mark being used for visualizing the marking of the N action targets, N being an integer greater than or equal to 1; and in response to the end of the first operation, controlling the first virtual object to release the first skill to the N action targets. The method effectively improves the efficiency of skill release.

The utility model provides a hot compress bag extruding device, relates to the technical field of hot compress bags, and solves the problem that in the prior art, a traditional hot compress bag is too much in water in the preparation process, the use effect of the hot compress bag is affected, and the risk of scalding of a patient in the use process is caused. The hot compress bag extruding device comprises a barrel body, and the barrel body is provided with an inner cavity, a feeding port and a discharging port; the heating assembly is mounted in the cylinder body and is used for heating the hot compress bag placed in the cylinder body; the extrusion assembly comprises a fixing plate fixedly mounted in the inner cavity of the cylinder body and an extrusion plate used for placing the hot compress bag, and the extrusion plate is arranged in a sliding mode along the inner cavity and presses the hot compress bag by gradually approaching the fixing plate; the driving assembly is fixedly mounted on the barrel and used for driving the extrusion plates to get close to or away from each other; the controller is electrically connected with the driving assembly and used for regulating and controlling the driving assembly to drive the extrusion plate to move; through the synergistic effect of the heating assembly and the extrusion assembly, the moisture content in the hot compress bag is effectively controlled.

The invention relates to the technical field of rapeseed oil preparation, in particular to a processing method for strengthening the flavor of rapeseed oil, which comprises the following steps: acquiring the concentration of a key characteristic flavor substance, determining a rapeseed frying stage by combining the material temperature and the relative exhaust humidity, and determining a corresponding target threshold value; determining a heat uniformity index of a stir-frying process, determining stir-frying uniformity according to a corresponding target threshold value, and adjusting the rotating speed of a roller and heat radiation power; determining a flavor precursor maturity index and a thermal stress coefficient of the fried rapeseeds based on the thermal uniformity index, determining the uniformity of the frying process based on the thermal stress coefficient, and adjusting a spreading and airing target final temperature of the spreading and airing process; and obtaining the peroxide value of the finished product oil to determine the oil oxidation degree, determining the excess amount of the oxidation precursor generated in the stir-frying process based on the change trend of the peroxide value, and adjusting the target uniformity index and the target stir-frying temperature in the flavor outbreak period. By monitoring the process state in real time, frying, spreading, airing and smashing parameters are adjusted in a self-adaptive mode, and the characteristic flavor is enhanced.

This invention provides a method for preparing a compound fruit and vegetable nutritious sweet potato cake product, relating to the field of sweet potato cake preparation technology. The method specifically includes the following steps: S1. Fresh sweet potatoes are washed, steamed at 95-105℃ for 20-30 minutes, then rapidly cooled to -18~-22℃ and frozen for 2-4 hours. After thawing, the sweet potatoes are peeled. S2. The peeled sweet potatoes are enzymatically hydrolyzed for 20-40 minutes, and then 5%-10% of a compound fruit and vegetable puree and 0.2%-0.5% of a flavor precursor mixture are added. The mixture is stirred at high speed to form a uniform sweet potato puree. S3. The sweet potato puree is used as a base layer, and a compound fruit and vegetable interlayer and a nutrient microcapsule layer are sequentially injected through a microfluidic mold, controlling the thickness of each layer to be 0.5-2 mm, forming a composite structure blank. S4. The formed blank is vacuum pre-cooled at 0-4℃ for 10-20 minutes, then cut into pieces, weighed, packaged using modified atmosphere packaging, and finally stored at 2-6℃. Modified atmosphere packaging replaces freezing, significantly extending shelf life and optimizing palatability and nutrient retention.

The application relates to the technical field of cubic satellite orbit launching ejection equipment, in particular to controllable ejection equipment for a cubic satellite, which comprises a storage device, a switching device, an ejection device and an extraction device. Sliding grooves are arranged on the upper end faces of the storage device, a rectangular push plate is arranged in the storage device, a spring one is arranged below the push plate, a driving part one is arranged in the storage device, a driving shaft one is arranged at the output end of the driving part one, one end of the driving shaft one is connected with one side of the switching device, a driving part two is arranged in one end of the storage device, a driving shaft two is arranged at the output end of the driving part two, and a connecting plate is arranged on one side of the switching device. The extraction device is buckled above the cubic satellite after losing the limitation of the cubic satellite, and still moves a certain distance to the inside, so that interference caused by the release of the cubic satellite is prevented, and the cubic satellite is prevented from being damaged.

This application discloses a file deletion method and electronic device, relating to the field of distributed file system technology. The method categorizes files to be deleted into large and small files based on a preset first volume threshold. Different deletion processes are applied to files of different sizes, allowing for simultaneous deletion of large and small files, thus improving file deletion efficiency. Specifically, for small files, data block information of at least two small files is recorded in a storage object, and the physical storage space corresponding to the data block information of at least two small files in the storage object is released in batches. This avoids frequent interactions with the storage device, improving the efficiency of physical storage space release, and further enhancing the efficiency of small file deletion.

The application discloses a ginseng extract rich in ginsenoside Rb and an extraction method thereof, and relates to the technical field of traditional Chinese medicine extraction and separation. The method takes the dried roots of 5-year-old and younger artificially planted ginseng as raw materials, and obtains ginseng coarse powder through cleaning, slicing, drying and crushing; after adding water to the ginseng coarse powder and adjusting the pH, a composite enzyme preparation is added for enzymatic pretreatment, and after inactivating the enzyme activity, a pretreated liquid is obtained; ethanol and water are added to the pretreated liquid, the ethanol concentration is adjusted, and twice hot reflux extraction is carried out and filtration is performed; after the extract is combined and concentrated under reduced pressure, water is added, stirred and allowed to stand for impurity removal, and the supernatant is taken for adsorption resin purification; the ethanol eluate is collected and concentrated under reduced pressure, malt dextrin is added and uniformly mixed, and then spray drying is performed, so as to obtain the ginseng extract rich in ginsenoside Rb. Compared with the prior art, the ginseng extract prepared by the method is beneficial to improving the extract yield, the ginsenoside content and the antioxidant activity.

This invention belongs to the field of fermentation technology, specifically relating to a probiotic-based fermented citrus beverage and its preparation process. The preparation process of the probiotic-based fermented citrus beverage includes the following steps: S1, pretreatment of raw juice to obtain fermentation base liquid; S2, inoculation; S3, fermentation to obtain fermentation broth; S4, post-treatment. By using a compound enzyme preparation to directionally degrade bitter substances, employing a compound acid-resistant bacterial strain for synergistic fermentation, and combining substrate optimization, staged temperature-controlled fermentation, and low-temperature post-treatment technology, the content of naringin and limonene is significantly reduced, while the retention rates of total phenols and total flavonoids and the survival rate of probiotics are improved. This results in a citrus beverage with excellent flavor, nutritional and health benefits, and stability.

The present application relates to sewage treatment technical field, disclose a kind of photocatalytic coupling biological treatment sewage treatment system and method, photocatalytic coupling biological treatment sewage treatment system includes the pretreatment unit, photocatalytic unit, electrochemical biological unit, post-treatment unit and intelligent control unit in turn communication;The pretreatment unit includes: microwave-ozone coupling reactor and magnetic adsorption column;The photocatalytic unit includes: double-waveband reaction tower;The electrochemical biological unit includes: three-dimensional electrode biofilm assembly and FeS2 filler layer, the anode of three-dimensional electrode biofilm assembly is boron-doped diamond, cathode is the carbon felt of anaerobic ammonia oxidation bacteria.The present application is effectively removed by multistage collaborative treatment, heavy metal ions and organic matter in sewage, the removal rate of heavy metal Cr (VI) is >99.9%, the removal rate of refractory organic matter benzene is >99.9%, with multi-scene applicability and high processing capacity.

The invention discloses an inorganic plastic oxygen composite material and application thereof in a green agriculture and plant maintenance system. The inorganic plastic oxygen composite material is prepared from the following components: an inorganic internal peroxide bridge composite compound, an inorganic mediated catalytic material and a material balancing and stabilizing system, through the synergistic effect of all the components, the generation amount and the utilization efficiency of singlet oxygen are remarkably improved, and then the excellent pest control and pesticide residue degradation effects are achieved. In actual agricultural application, an aqueous solution prepared from the composite material can generate air containing singlet oxygen after being atomized and aerated, the air is uniformly released through a greenhouse pipeline, germ spores in the air can be quickly killed, and meanwhile, the composite material is sprayed on the surfaces of crops, so that mold and gray mold of the crops such as tomatoes and cucumbers can be effectively prevented and treated; the efficient degradation effect on organic phosphorus pesticide residues on the surfaces of the vegetables is realized. The whole technical scheme does not need to use chemical pesticides, meets the development requirements of green agriculture, can effectively reduce pesticide residue pollution, and protects the ecological environment of soil.

This invention discloses a class of tumor-targeting prodrug compounds that synergistically enhance photodynamic / chemotherapy through azoreductase activation, their preparation method, and their application in selectively killing cancer cells and treating tumors. The first objective is to provide a class of tumor-targeting prodrug compounds that synergistically enhance photodynamic / chemotherapy through azoreductase activation. These compounds possess the properties of positively charged cyanine dyes, allowing them to target tumor sites and localize to the mitochondria of cancer cells to a certain extent. Through simultaneous activation of azoreductase, photosensitizers and chemotherapeutic drugs are released, achieving selective killing of cancer cells and targeted tumor therapy. The second objective is to provide a method for preparing the prodrug compound. In an anhydrous system, an indole compound containing an R1 group and modified with different substituents at the benzene ring position is reacted with 2-chloro-3-(hydroxymethylene)-1-cyclohexene-1-carboxaldehyde to obtain compound IV. Then, compound IV is reacted with m-nitrophenol and reduced to obtain compound V. Finally, compound V undergoes a diazotization reaction with sodium nitrite, and a compound containing an R2 group is added to continue the reaction to obtain the target prodrug compound.

This invention belongs to the field of microbial engineering technology, specifically relating to an Akk bacteria culture method based on the induction and diversion regulation of *Porphyra yezoensis* glycoprotein. The method includes: preparing *Porphyra yezoensis* glycoprotein with high galactose content and high exposure of O-glycosidic bond-related structures using a low-energy pulsed laser-mild alkali treatment synergistic extraction method; inoculating *Akk bacteria* into an induction culture system after pre-culturing, initially adding *Porphyra yezoensis* glycoprotein, and culturing under anaerobic conditions; monitoring butyric acid and / or isobutyric acid content in real-time or at intervals during culture; and initiating a feedback diversion regulation program when the content exceeds a preset threshold to adjust one or more parameters in the input concentration of *Porphyra yezoensis* glycoprotein and the pH of the culture system. Compared with existing technologies, this invention achieves the targeted enrichment of characteristic metabolites such as butyric acid and isobutyric acid, with butyric acid and isobutyric acid contents increasing by approximately 4.4 times and 4.5 times, respectively, compared to the naturally cultured output group.

This utility model proposes an unattended license plate recognition integrated machine, belonging to the field of vehicle management technology. It includes two sets of mounting plates symmetrically arranged. A first protective shell is mounted on the top of each mounting plate, and a second protective shell is mounted on top of the first protective shell. A recognition component is disposed between the mounting plates. The recognition component is used to recognize vehicle license plates and release vehicles. The recognition component includes an electric telescopic rod and a drive motor. The electric telescopic rod is bolted into the first protective shell, and the drive motor is bolted into the second protective shell. A transmission screw is mounted on the output end of the drive motor. A winding wheel is sleeved on the top of the transmission screw, and a screw nut is sleeved on the outside of the transmission screw. A blocking plate is mounted on the side wall of the screw nut. This utility model, by incorporating the recognition component, can quickly and accurately recognize vehicle license plates and quickly release vehicles.

This invention discloses a method for extracting plant extracellular vesicles based on biomimetic low-permeability vibrating membrane separation technology. The invention first uses a specific pretreatment method to mix and incubate plant samples with a specific low-permeability induction solution (plant hormones + osmotic regulators + activity protectants) to obtain a vesicle release solution, which significantly improves the vesicle yield. This process simulates the natural release of vesicles by plant cells under mild external stimulation, activating the cell's own vesicle release mechanism, resulting in a vesicle release efficiency far exceeding traditional methods. Based on this, the plant extracellular vesicle extraction method established by this invention, based on biomimetic low-permeability vibrating membrane separation technology, further improves the yield and purity of vesicles by subjecting the pretreated vesicle release solution to specific high-frequency micro-vibration membrane separation and concentration steps, followed by photoacoustic fluidized bed separation and purification. This method overcomes the drawbacks of traditional methods, providing a plant extracellular vesicle extraction scheme that achieves high yield, high purity, high activity, standardization, and scalability.

The invention relates to the technical field of seasoning processing, in particular to a preparation method of a rare edible mushroom byproduct salt-reducing and freshness-increasing compound seasoning, which is characterized in that processing byproducts of oudemansiella radicata, pleurotus eryngii, volvariella volvacea, tricholoma matsutake, morchella esculenta, cordyceps militaris and lentinula edodes are used as main raw materials, and are compounded with apples and carrots to prepare the rare edible mushroom byproduct salt-reducing and freshness-increasing compound seasoning. The preparation method comprises the following steps: fully releasing delicate flavor components by virtue of a synergistic process of steam explosion, belt type microwave flavor enhancement and ultrasonic-assisted directional enzymolysis in sequence, compounding with a flavor enhancement material, low-sodium salt and a filling agent, and finally granulating and drying to obtain a finished product. According to the method, high-value utilization of edible mushroom byproducts is achieved, the sodium chloride content of the prepared seasoning is smaller than or equal to 20%, the sodium content is remarkably reduced, meanwhile, through the synergistic effect of natural freshness increasing components, the product is rich in delicate flavor and rich in flavor level, and the healthy target of reducing salt without freshness is achieved. The method is efficient in process, natural in product and suitable for industrial production.

This invention discloses a low-damage predatory mite application device and its impeller, comprising a rotating body of a certain length and several blades disposed on the outer periphery of the rotating body. These blades are evenly spaced along the circumferential direction of the rotating body, and each blade extends along the length of the rotating body. All blades are helical with a helix angle between 5° and 45°. The device includes the impeller. This impeller design allows for continuous, uninterrupted feeding, reducing damage to predatory mites caused by friction and jamming. It also improves release efficiency and uniformity while minimizing damage to the predatory mites. After spraying predatory mites with this device, the survival rate of the predatory mites is 95.78%, with a loss rate of only 4.22%, indicating extremely low predatory mite loss.

This invention belongs to the field of adsorption material technology, specifically relating to a hollow sodium alginate gel sphere and its preparation method and application. The method of this invention includes the following steps: (1) dissolving sodium alginate and foaming agent sodium bicarbonate in water and stirring until dissolved to obtain a sodium alginate-sodium bicarbonate mixed solution, wherein the concentration of sodium alginate is 1w%~2w% and the concentration of foaming agent sodium bicarbonate is 3w%~15w%; (2) adding the sodium alginate-sodium bicarbonate mixed solution dropwise to a calcium chloride solution to carry out a solidification reaction, forming solid sodium alginate gel particles; immersing the solid sodium alginate gel particles in an acidic solution to allow the foaming agent to react, thereby obtaining hollow sodium alginate gel spheres. The method of this invention is simple, low-cost, and pollution-free; the hollow gel spheres obtained have an ideal structure and, as a flavor carrier, have the advantages of large loading capacity, high flavor release efficiency, and high smoke transfer rate, showing good application prospects in improving the aroma quality of cigarettes.

The invention relates to the technical field of plant effective component extraction, and discloses a method for extracting artemisinin through enzymolysis pretreatment, which comprises the steps of raw material pretreatment, composite enzymolysis pretreatment, ultrasonic-assisted extraction, impurity removal and concentration, purification and crystallization, and recrystallization and refining. A compound enzyme system composed of cellulase, hemicellulase and pectinase is adopted to conduct enzymolysis on artemisia annua powder, cell wall structures are destroyed to promote artemisinin release, ultrasonic-assisted extraction is combined to strengthen the extraction effect, and the product purity is improved through chitosan impurity removal, silica gel chromatography and two times of crystallization. The method is simple in process, environmentally friendly and energy-saving, effectively solves the problems that a traditional extraction method is low in extraction rate, insufficient in purity and high in cost, is suitable for large-scale industrial production, and has high practical value and industrialization prospects.

This utility model relates to the field of winemaking technology, specifically to a winemaking gas release device, including a release module and a shielding module. The release module includes a connecting pipe, which is fixedly connected to a fixing pipe. A first and a second support plate are located on the side of the connecting pipe, and a top plate is located at the top of the connecting pipe. The top of the connecting pipe has several openings. The shielding module includes a shielding cover. In this utility model, the connecting pipe provides the first and second support plates. Wine can enter the top plate from the openings at the top of the connecting pipe, and then the wine can flow along the inside of the top plate into the first support plate. The wine in the first support plate can then flow into the second support plate, which increases the turbulence and flow of the wine, thus releasing the gas in the wine more fully and improving the gas release efficiency, facilitating rapid processing of the wine.

The invention relates to a nano-copper cluster material with precise atoms, discloses a copper nano-cluster with an inhibiting effect on rhizoctonia cerealis as well as a preparation method and application of the copper nano-cluster, and belongs to the crossing field of nano-material chemistry and biochemistry. According to the invention, 1-benzyl-4, 4 '-dipyridyl chloride is used as a ligand, and the nano-copper cluster with high yield is synthesized by a room-temperature volatilization one-pot method. The chemical formula of the nano-copper cluster material is [Cu5I4 (L) 8 (I3) 2]. (I3) 7 (I2) 2 (L is 1-benzyl-4, 4 '-bipyridine chloride), abbreviated as Cu5I4, and the nano-copper cluster material belongs to a triclinic system; the space group is a chiral space group P21 / m. The nano-copper cluster material has good dispersity, good biocompatibility and excellent rhizoctonia cerealis resistance activity, the copper nano-clusters are adopted as antibacterial active components, the advantages of quantum size effect and high specific surface area of the copper nano-clusters are brought into full play, the copper ion release efficiency is high, and the inhibition rate on rhizoctonia cerealis can reach 90% or above.

The invention discloses a method for extracting rosemary essential oil through enzymolysis-assisted steam distillation, and relates to the technical field of plant component extraction, and the method comprises the following steps: (1) raw material pretreatment: cleaning and airing a rosemary twig and flower raw material, and then carrying out mechanical crushing treatment; (2) composite enzymatic hydrolysis: mixing the crushed material with a composite enzyme solution according to a mass volume ratio of 1: 10, and carrying out enzymatic hydrolysis for 1-5 hours under the conditions that the pH value is 4.0-6.0 and the temperature is 35-55 DEG C, the composite enzyme solution comprising cellulase, pectinase and neutral protease; (3) steam distillation extraction: performing steam distillation on the mixture subjected to enzymolysis for 10-50 minutes; and (4) standing for layering and dehydrating: standing for layering the distillate. Through a composite enzymolysis system of cellulase, pectinase and neutral protease, a cellulose skeleton of a rosemary cell wall, a middle glue layer pectin substance and an intercellular substance protein network are specifically destroyed, and the release efficiency of essential oil in cells is remarkably improved.

The utility model discloses an orthopedic needle knife, which comprises a needle handle and a needle body in the shape of a column, one end of the needle body is connected with the tail end of the needle handle, and the other end of the needle body is provided with a needle head; the front end of the needle head is provided with a probe part for positioning a contracture soft tissue part by pressing, and at least one side of the needle head and located behind the probe part is formed with a side blade part for cutting the contracture soft tissue part. The utility model positions the contracture soft tissue part through the probe part located at the front end, and after accurate positioning, the side cutting through the blade part located at the side can be adopted by pressing down, so that the quick linear cutting and loosening of the contracture soft tissue part are realized, the loosening efficiency of the contracture soft tissue is effectively improved, and the operation is simpler, and secondary damage can be avoided.