26results about How to "Control release" patented technology

This invention discloses a method for constructing a biological model of tertiary lymphoid structures, which can rapidly and efficiently induce the generation of in situ TLS, without relying on specific tissues or organs, and without the need for complex and expensive preparation processes such as cell editing and transgenic mice. It can generate stable, mature, and long-lasting TLS structures within 2 to 3 weeks, and has the characteristics of short cycle, low cost, simple operation, reproducibility, safety and effectiveness.

This invention discloses a slow-release fertilizer suitable for lateritic soils in Hainan, comprising a fertilizer core and a coating layer; the fertilizer core comprises the following raw materials in parts by weight: 10-20 parts isobutylene diurea, 1-3 parts 3,4-dimethyl-1H-pyrazole dihydrogen phosphate, 1-3 parts dicyandiamide DCD, 20-30 parts humic acid, and 30-50 parts organic fertilizer; the coating layer comprises the following raw materials in parts by weight: 5-10 parts natural nanotube halloysite, 3-5 parts bentonite, 5-10 parts cyclodextrin, 1-3 parts polyglutamic acid, 1-3 parts wood vinegar, and 5-10 parts polyacrylamide. The isobutylene diurea, humic acid, and organic fertilizer of this invention can effectively replenish organic matter and nitrogen in iron-aluminate soil, maintain soil nitrogen levels, and effectively control the conversion of ammonium nitrogen to nitrate nitrogen in lateritic soil, thereby reducing nitrogen loss and achieving a stable supply of nitrogen. In addition, polyglutamic acid and polyacrylamide have strong water retention capacity, and the fertilizer core is coated with a coating layer to achieve slow release and water retention.

This invention provides a dressing containing Ligusticum striatum microspheres and its preparation method, to solve the problem of safe and precise application of Ligusticum striatum extract or Ligustrazine in difficult-to-heal wounds; the dressing containing Ligusticum striatum microspheres and its preparation method, wherein the dressing is composed of Ligusticum striatum microspheres loaded with pHEMA hydrogel as the main body, wherein the Ligusticum striatum microspheres are formed by coating Ligusticum striatum extract or Ligustrazine with PLGA, and the pHEMA hydrogel partially encapsulates the Ligusticum striatum microspheres.

The utility model discloses an inflator for inflating product belongs to inflating device technical field, and it includes the cylinder, the inflator and the piston structure. Its innovation lies in setting up the oil absorption cotton structure, and this oil absorption cotton can be installed in two positions: one is on the piston structure, and specifically can be set in the positioning groove of piston or the annular groove specially, is located the rubber ring inside, two is the bottom of the cylinder. The piston structure includes the support disc with the positioning groove and the annular groove and the rubber ring with the inverted L type section. The oil absorption cotton can be annular or circular, and can be provided with tail strip to facilitate replacement. The utility model prolongs the service life of inflator, improves the inflating cleanliness through the effective adsorption and slow -release lubricating oil of oil absorption cotton, reduces the friction wear and oil spill, is especially suitable for the product such as inflating toy.

The present application relates to the technical field of medical devices, in particular to a wound debridement device for blood tumor patients, comprising a handle vertically arranged, an injection part, an adsorption part and a mounting part for clamping medical cotton, the lower end of the handle is provided with a placing cavity, the mounting part is arranged in the placing cavity, the injection part comprises a first cylindrical cavity, a first button, a vertical slide and a first flow channel arranged in the handle, the mounting part comprises a fixing block arranged in the placing cavity and detachably connected with the handle, when the medical cotton is clamped on the handle by the fixing block, part of the medical cotton extends out of the lower end of the handle through the center hole of the fixing block, and the adsorption part comprises a second cylindrical cavity, a second button and an adsorption channel arranged vertically. The present application is simple and fast in operation when debriding the wound of the patient, greatly shortens the debridement time and reduces the labor intensity of medical staff, simultaneously reduces the time of exposing the wound of the patient to the outside, reduces the risk of wound infection and improves the wound healing speed.

The utility model relates to an artificial valve anchoring device, a delivery system and a transcatheter heart valve replacement system, the device can radially collapse and expand between a radial collapse structure and a radial expansion structure, and the device comprises a skirt edge part, a main body part and a plurality of connecting pieces; the skirt edge part extends outwards in the radial direction in an umbrella disc shape, and the small-diameter end of the skirt edge part is connected with the main body part; the main body part comprises a plurality of grid units which are connected with one another; the connecting piece is arranged at the far end of the skirt edge part and used for being connected with a conveying device. At least part of the section of the connecting piece is configured to be an elastic deformation section, the elastic deformation section can be in a straightened state in a conveying state and gradually recover to be in a preset nonlinear shape in a release state, and gradual release of the artificial valve anchoring device can be achieved through gradual deformation of the elastic deformation section.

The application provides a baicalin manganese dioxide nanoparticle, a preparation method and application thereof, and relates to the technical field of biological medicines.The baicalin manganese dioxide nanoparticle provided by the application comprises a hollow mesoporous manganese dioxide nanoparticle, baicalin, a polyallylamine hydrochloride layer and folic acid, the baicalin is loaded in a hollow inner cavity and / or mesoporous channel of the hollow mesoporous manganese dioxide nanoparticle, the polyallylamine hydrochloride layer is coated on the surface of the hollow mesoporous manganese dioxide nanoparticle, and the folic acid is coupled to the surface of the polyallylamine hydrochloride layer through an amide bond.The baicalin manganese dioxide nanoparticle has the advantages of active targeting capacity, high drug loading efficiency and the ability to respond to multiple signals of a tumor microenvironment, thereby being capable of enhancing the curative effect of a drug and reducing toxic side effects, and showing a broad application prospect in the field of anti-tumor treatment.

The application discloses a high-heredity-performance high-health-degree pig whole-process nutrition precise feeding method, and particularly relates to the pig scale breeding technical field, and comprises seven-stage fine feed design from the teaching trough milk powder material to the fattening material, and the whole process adopts the automatic dry and wet trough for feeding from the teaching trough granule material stage, and a three-stage progressive growth constraint relationship is established, and the three are closely related and indispensable; meanwhile, the mixed weight ratio of the feed and water is strictly fixed in the rearing stage, a semi-liquid uniform porridge material is formed, and the water-feed ratio is dynamically controlled in the growth and fattening stage. Through the cooperation of the stage target control and the staged precise liquid feeding, the technical contradiction that the early feeding amount and the dry matter intake amount of the high-heredity-performance pig are difficult to be considered is solved, the growth potential of the pig is fully tapped under the premise of guaranteeing the high health degree, and the application has the significant advantages of low feed-meat ratio, high health degree and good uniformity of the marketable pigs.

The application discloses a preparation method of iron modified malus micromalus crabapple biochar based on malus micromalus crabapple waste and application thereof. The preparation method of the malus micromalus crabapple iron modified biochar comprises two steps of carbonization and modification. The malus micromalus crabapple litter waste is subjected to oxygen-limited heating carbonization to prepare carbonized materials, and then is subjected to acid pickling and iron modification to prepare the iron modified malus micromalus crabapple biochar. The prepared biochar has high adsorption capacity for selenium in water, has the function of holding selenium in selenium-rich soil, can simultaneously passivate harmful heavy metals in soil, and has the functions of controlling the release of selenium in water and improving soil quality. The application not only provides a new way for resource utilization of the malus micromalus crabapple litter, but also provides an efficient technology for water selenium pollution treatment, soil selenium holding and heavy metal soil fixation, and achieves the effect of turning waste into treasure.

The invention discloses a preparation method of a skin freckle-removing and whitening composite film spraying agent, which comprises the following steps: S1, preparing a sodium alginate solution with the content of sodium alginate being 1-1.5%; s2, sodium hyaluronate, whitening components, propylene glycol and azone are added into the sodium alginate solution to be dissolved, the mass ratio of sodium alginate to sodium hyaluronate to propylene glycol to azone is 1: (0.5-1): (0.5-1): 1, and a compound film forming solution is obtained; and S3, uniformly spreading the compound film-forming solution prepared in the step S2 in a vessel, uniformly spraying the uniform cross-linking solution in the vessel, and after a layer of film is formed, taking out the film to obtain the freckle-removing and whitening type composite film spraying agent for the skin. The prepared skin freckle-removing and whitening composite film spraying agent has the effects of no irritation to skin, strong medicine infiltration capacity, high mechanical strength, moisture retention and oil control.

This invention belongs to the field of agricultural microbiology technology, and discloses a strain of Sphingomonas, a microbial agent, its preparation method and application, specifically disclosing a strain of Sphingomonas (… Sphingomonas Microbial agent (sp.) R7 was deposited on March 31, 2025, at the China Center for Type Culture Collection (CCTCC), Wuhan University, Wuhan, China, with accession number CCTCC NO: M 2025634. The invention discloses a microbial agent containing this bacterium, its preparation method, and its application in improving soil and / or promoting rice growth, as well as in reducing cadmium content in the aboveground parts of rice. This microbial agent not only increases the content of nutrients such as nitrogen and phosphorus in the soil, thus improving soil quality, but also significantly increases the dry matter weight of rice roots, stems, leaves, and brown rice, promoting rice plant growth; it also concentrates cadmium in the rice roots, reducing the cadmium content in the aboveground parts of rice.

The present application relates to the technical fields of anticoagulant materials and stimuli-responsive materials, and mainly relates to a light-controlled release function of the complex material of nattexarin and a preparation method thereof.The light-controlled release function of the complex material of nattexarin is obtained by mixing calcium nattexarin and quaternary ammonium salt compound containing azobenzene structure in aqueous solution, and then through the treatment of oscillation, centrifugation, water washing and drying.The light-controlled release function of the complex material of nattexarin prepared by the present application has the characteristics of good biocompatibility and the ability to release nattexarin under light control.Using the light-controlled release function of the complex material of nattexarin, the blood clotting time can be effectively controlled by light.The light-controlled release function of the complex material of nattexarin prepared by the present application can be applied to the field of blood clotting regulation.

The application relates to the technical field of supramolecules, in particular to a pillar[n]arene derivative-DCOIT slow-release supramolecular self-assembly body, application and a preparation method. The supramolecular self-assembly body loads DCOIT by taking a pillar[n]arene derivative as a molecular carrier; the pillar[n]arene serving as the carrier can form a supramolecular assembly body with DCOIT through hydrogen bond interaction between pi and CH2, the host-guest complexation of the two is strong, and the pillar[n]arene derivative can effectively control the slow release of DCOIT; the supramolecular self-assembly body is good in safety and stability, low in cost, beneficial to industrialized production, and wide in application field; the method is simple in operation, low in preparation cost, easy to realize, and beneficial to industrial promotion.

This invention relates to an electro / photochromic device based on a carbon-nitride conjugated polymer, its assembly method, and its application, belonging to the technical field of smart color-changing devices. The electro / photochromic device of this invention includes a carbon-nitride electrode and an FTO conductive glass placed opposite each other, a double-sided insulating adhesive sealing the carbon-nitride electrode and the FTO conductive glass, and an electrolyte solution injected into the gap between the carbon-nitride electrode and the FTO conductive glass. The assembly method is simple and easy to operate, and it has good application prospects in electro / photochromic smart windows.

The utility model relates to a cloud computing equipment cabinet device which comprises a cabinet body, placing plates are fixedly connected in the cabinet body at equal intervals, sliding grooves are formed in the two sides of the inner wall of the cabinet body and located above the placing plates, sliding rods are fixedly connected in the sliding grooves, two sliding blocks are connected to the outer sides of the sliding rods in a sliding mode, one sides of the sliding blocks are rotationally connected with connecting rods, and the connecting rods are connected with the connecting rods in a sliding mode. And a clamping plate is rotationally connected between the two corresponding connecting rods, an empty groove is formed in the position, located on one side of the containing plate, in the cabinet body, and cooling fans are installed and connected in the empty groove at equal intervals. The cabinet has the advantages that the cabinet can adapt to cloud computing devices of different sizes, the devices are prevented from shaking in the cabinet body, the safety of the devices is protected, the heat dissipation system can effectively reduce the temperature in the cabinet body through cooperation of the air inlet, the heat dissipation fan, the heat dissipation holes and the air outlet, it is guaranteed that the cloud computing devices operate in a proper temperature environment, and the service life of the cloud computing devices is prolonged. And the service life of the equipment is prolonged.

This invention discloses a feeding system for electroslag remelting, comprising a clamping assembly, a gripping assembly, and a control assembly. The clamping assembly includes a stand and locking components, with at least two locking components fixed at intervals on the stand. The locking components are used to clamp or release consumable electrodes. The stand is equipped with a detection element for detecting the consumable electrodes. The gripping assembly includes a robotic arm and grippers. The grippers are mounted on the robotic arm, which drives the grippers to move between the clamping assembly and a target area. The grippers are used to clamp or release the consumable electrodes. The control assembly connects the locking components, the detection element, and the grippers. The control assembly can acquire the detection signal from the detection element and control the locking components to clamp the consumable electrodes. The control assembly can also control the grippers to clamp the consumable electrodes and then control the locking components to release them. This eliminates the need for manual intervention, improving safety and reliability.

The utility model relates to the technical field of seeding equipment, in particular to a crop seeding machine which comprises a frame, a seed sowing device is mounted at the bottom of the frame and comprises an annular shell, a partition ring is fixedly connected to the interior of the annular shell and used for partitioning the interior of the annular shell, a seed inlet cavity and a flow dividing cavity are formed, and the seed inlet cavity is communicated with the flow dividing cavity. A seed inlet cavity is formed in the frame, a separation ring is arranged in the seed inlet cavity, a rotatable seed guide wheel is arranged on one side of the separation ring and is positioned in the seed inlet cavity, and seed metering wheel spoons which are arranged in an annular array are fixedly connected to one side of the seed guide wheel and is positioned in the seed inlet cavity. A single seed rotates to an outlet of the seed metering device along with the U-shaped accommodating groove and is finally released into a furrow through the seed metering round pipe for seeding, so that the seed dispersion can be realized, the single seed is accommodated in the single U-shaped accommodating groove and is sequentially released for seeding, the single seed seeding is realized, the seed consumption can be reduced, and the seed cost is reduced.

The invention discloses a microwave-triggered aroma enhancement method for plant meat. The microwave-triggered aroma enhancement method comprises the following steps: mixing and incubating sodium alginate and beta-cyclodextrin to prepare a composite wall material; the preparation method comprises the following steps: hydrolyzing potato protein with alkaline protease and flavourzyme, mixing the hydrolyzed potato protein with xylose, and carrying out a Maillard reaction to prepare a proteolysis-Maillard reaction product; the proteolysis-Maillard reaction product and a composite wall material are mixed, Ca < 2 + > ions are added for cross-linking solidification, and encapsulated microspheres are prepared; and mixing the encapsulated microspheres with a plant meat base material, carrying out molding treatment, and carrying out microwave treatment on the obtained plant meat analogue, thereby realizing microwave-triggered aroma enhancement of the plant meat. Triggered release of flavor substances of the plant meat analogues under the microwave condition is achieved, a new way is provided for aroma enhancement of the plant meat analogues, and the problems that in the reheating process of the plant meat analogues, aroma is insufficient, meat aroma characteristics are not prominent, and the flavor substances are prone to volatilization and loss can be solved by adopting the method.

The application relates to the field of agricultural cultivation and fertilization technology, in particular to a small-terrain handheld agricultural cultivation and fertilization device, which comprises a fertilization device component group, the fertilization device component group is used for fertilization, the fertilization device component group comprises a fertilization main pipe assembly, a fertilizer discharging assembly and a control amount assembly, the fertilization main pipe assembly is used for conveying fertilizer, the fertilization main pipe assembly comprises an upper pipe, and a middle pipe is connected to one end of the upper pipe. The existence of the shovel body can block the soil, the soil cannot be in contact with the fertilizer discharging port structure, the shovel body can guarantee opening and closing to enable the fertilizer to enter the soil, the soil cannot block the fertilizer discharging port position, and the efficiency of discharging the fertilizer by the fertilizer discharging port can be guaranteed during long-term work.

The folding chair comprises a backrest rod and a sliding armrest, the sliding armrest is provided with a cavity, a sliding seat and a hydraulic rod are arranged in the cavity of the sliding armrest, the first end of the hydraulic rod is connected with the sliding armrest, the second end of the hydraulic rod is connected with the sliding seat, and the hydraulic rod drives the sliding armrest to move relative to the sliding seat when stretching out and drawing back. The backrest rod connected with the sliding armrest rotates relative to the seat rod to adjust the angle of the chair back. The operation knob is embedded in the front end of the armrest, and the valve opening pin is directly or indirectly pushed to act by shifting the operation knob, so that locking and releasing of the hydraulic rod are controlled, and the smooth and stepless chair back angle adjusting effect is achieved.

The invention relates to a preparation method of a triptolide-polypeptide conjugate and a long-acting hydrogel preparation of the triptolide-polypeptide conjugate, the triptolide-polypeptide conjugate is formed by coupling triptolide and a polypeptide sequence with assembly performance through a degradable group, and the triptolide-polypeptide conjugate is obtained. The degradable group comprises a carboxylic ester bond formed by a hydroxyl group of triptolide and a carboxylic acid derivative. An alkyl chain can be further introduced into the N end of the polypeptide sequence with the self-assembly performance, so that the stability of an assembly is improved, and the drug release period is regulated and controlled through the length of the alkyl chain. The triptolide-polypeptide conjugate is self-assembled in an aqueous medium to form a nanostructure, and the nanostructure is subjected to solution-gel conversion under physiological conditions to form a hydrogel preparation. The hydrogel preparation can form a medicine storage cavern at a focus part, long-term and controllable medicine release is realized, and the safety of the medicine is improved.

A hollow multilayered alumina microsphere and its preparation method are disclosed, belonging to the field of nanomaterials technology. This method uses anionic surfactants with sulfonic acid or carboxyl groups as template agents, aluminum salts as aluminum sources, and molecules containing carboxyl or phenolic hydroxyl groups as metal ligands to slow the release of aluminum ions. Amide precipitants are added to control the aluminum ion hydrolysis rate, resulting in hollow multilayered microspheres. This method can also be used to synthesize alumina microspheres with various structures such as onion-shaped concentric multilayers, hollow microspheres, multi-chambered microspheres, and radially cavitary microspheres. This method employs a kinetic approach combined with a soft template method to achieve controllable construction of the microsphere structure, solving the problem of uncontrollable microsphere morphology and structure due to excessively rapid aluminum source hydrolysis during alumina microsphere preparation. The synthesis process is simple and convenient, requires minimal equipment, uses inexpensive and readily available raw materials, and the resulting alumina microspheres have excellent application prospects.

This invention discloses a method for preparing and applying an intercalated montmorillonite / nanocellulose gel packaging film with preservation and monitoring functions. It belongs to the field of packaging materials. This invention uses an ultrasonic-assisted method to insert lithium saponite between montmorillonite layers. Using lithium saponite-intercalated montmorillonite as a template and ascorbic acid as a reducing agent, a lithium saponite-intercalated montmorillonite immobilized nano-copper composite antibacterial agent is prepared. Then, using nanocellulose as a matrix, anthocyanins are added as an indicator and mixed with the immobilized nano-copper antibacterial agent. The resulting intercalated montmorillonite / nanocellulose gel film packaging with preservation and monitoring functions is prepared through a "double drying" technique. When applied to food storage packaging, the lithium saponite-montmorillonite-nanocopper structure exhibits long-lasting antibacterial activity, while the anthocyanins provide an indicator function for monitoring food freshness.

The application discloses antibacterial ion controllable release fiber, air filtering material and a preparation method thereof, wherein the antibacterial ion controllable release air filtering material comprises a fiber body, dopamine attached to the fiber body, an antibacterial agent deposited on the dopamine surface of the fiber body, and a controllable release layer attached to the antibacterial agent surface; the raw material of the controllable release layer is a substance swelling in a bacterial metabolic environment. The application overcomes the defect that the antibacterial filtering material disclosed in the prior art does not have long-acting property, has a bactericidal ion controllable release bactericidal function, a bactericidal retention rate > 99%, and a storage time > 70 days.

The invention provides application of adipose-derived stem cell artificial nano-vesicles in preparation of drugs for promoting platelet generation. The invention also provides an adipose-derived stem cell artificial nano-vesicle loaded with a sanguisorba monomer DMAG, and the adipose-derived stem cell artificial nano-vesicle is prepared by extracting a cell membrane of adipose-derived stem cells and entrapping DMAG by using a natural phospholipid bilayer structure of the cell membrane so as to form a nano-sized vesicle structure. The artificial nano-vesicle inherits good biocompatibility of adipose-derived stem cells, can effectively reduce immunological rejection of an organism, and protects DMAG from degradation effects such as in-vivo enzymolysis and the like; and a protective delivery system can be formed in vivo, so that rapid metabolism and elimination of DMAG in vivo are reduced, and the effective release time of DMAG in vivo is prolonged. The artificial nano-vesicles significantly increase the number of peripheral blood platelets, shorten the bleeding time and reduce the immunogenicity at the same time.

The application belongs to the field of polymer compositions for mulching films, and particularly relates to a modified polylactic acid degradable mulching film for red kidney bean planting and a preparation method thereof. The modified polylactic acid degradable mulching film comprises the following raw materials in parts by mass: 40-60 parts of polylactic acid, 40-60 parts of polybutylene adipate terephthalate, 15-25 parts of drug-loaded nanometer microspheres, 4-6 parts of coupling agent modified degradation promoter, and 1-3 parts of lubricant. The drug-loaded nanometer microspheres are prepared by adding phenolated lignin into water to adjust pH, adding a pore former and a crosslinking agent, and preparing an aqueous phase; the aqueous phase and an oil phase are mixed and reacted to obtain porous nanometer microspheres; the porous nanometer microspheres are immersed in a pesticide solution for adsorption, and a coating liquid is added to obtain the modified polylactic acid degradable mulching film. The mulching film has strong mechanical properties; and the drug-loaded nanometer microspheres and the coupling agent modified degradation promoter are used in combination to match the degradation rate of the mulching film with the growth cycle of red kidney beans.