15results about How to "High load rate" patented technology

The invention discloses a radioactive medical isotope Ra-223 stably-labeled rare earth nano diagnosis and treatment preparation as well as a preparation method and application thereof. According to the invention, by constructing a dual protection mechanism of the shell layer and the functional biomolecular layer, the Ra-223 is effectively packaged, the recoil nuclei of the Ra-223 are reserved at the tumor part and are prevented from escaping to the surrounding environment of the tumor, the safety of the Ra-223 treatment process can be enhanced, the radioactive energy is ensured to accurately act on the focus, and the treatment effect of the Ra-223 is improved. Meanwhile, the damage risk to healthy tissues is minimized.

The present application relates to the technical fields of medical health food, and discloses a preparation device for naringin compound loaded by octenyl succinic acid modified porous starch ester, which comprises a preparation liquid ultrasonic mixing cylinder assembly, a mixing top cover assembly is arranged on the top of the preparation liquid ultrasonic mixing cylinder assembly, and a mixed liquid shaking and stirring assembly is arranged on the mixing top cover assembly; a rocker arm base assembly is rotatably arranged at the bottom of the preparation liquid ultrasonic mixing cylinder assembly; a preparation liquid mixing cylinder assembly is fixedly arranged on both sides of the top of the preparation liquid ultrasonic mixing cylinder assembly; the preparation liquid ultrasonic mixing cylinder assembly comprises a preparation liquid ultrasonic mixing cylinder, a plurality of mixing cylinder bottom arm tables are fixedly arranged on the preparation liquid ultrasonic mixing cylinder through reinforcing rib plates, and a bottom arm table main shaft rod is fixedly arranged on the mixing cylinder bottom arm table; an aeration pipe is fixedly arranged at the bottom of the preparation liquid ultrasonic mixing cylinder, and a liquid pump is fixedly arranged outside the bottom of the preparation liquid ultrasonic mixing cylinder. The present application has the characteristics of sufficient mixing.

The invention discloses a CaCO3-based validamycin controlled release preparation and a preparation method thereof, and the preparation method comprises the following steps: taking glucose, amino acid and water as raw materials, reacting under a microwave heating condition, and standing to obtain carbon dots; wherein the amino acid is one or a mixture of more of lysine, histidine and arginine; the preparation method comprises the following steps: mixing validamycin, water and calcium acetate, stirring, adding carbon dots, and stirring to obtain a validamycin / carbon dot mixed solution; and adding a sodium carbonate aqueous solution into the validamycin / carbon dot mixed solution, stirring, standing, and drying the obtained precipitate to obtain the CaCO3-based validamycin controlled release preparation. The controlled release preparation has the characteristics of high drug loading rate, controllable drug release, simple preparation process and the like, and provides a new strategy for developing CaCO3-based nano pesticides.

The invention discloses a preparation method of a D-mannitol-melamine foam composite solid-solid phase change material. The preparation method comprises the following steps: cutting melamine foam MF into small blocks; placing the melamine foam sample cut into blocks on a porcelain boat in a quartz tube of a tubular resistance furnace, carbonizing in a nitrogen atmosphere, and cooling to room temperature after carbonization is finished; adding the carbonized melamine foam CF block into molten D-mannitol DM, and carrying out vacuum impregnation in a vacuum drying oven; and taking out the impregnated sample, heating the sample on a heating plate, and removing redundant mannitol on the surface to obtain the D-mannitol-melamine foam. The prepared DM / CF composite material has excellent shape stability, leakage, loss or form out-of-control of the phase change material in the phase change process can be avoided, the safety and reliability of the material are guaranteed, and potential application prospects are provided for the fields of solar energy utilization, industrial waste heat recovery and the like.

The present application belongs to the technical field of oil and gas exploitation, and relates to a nano desorption agent for gas well and a preparation method thereof. The desorption agent uses special pretreated biochar as a core carrier, loads specific proportion of bimetallic oxide nanoparticles, and is supplemented with an environmentally friendly surfactant for surface modification. Through the synergistic effect of nano size effect, catalysis / electron transfer effect of metal oxide, physical adsorption and pore transport effect of biochar, and interfacial tension reduction effect of surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is significantly reduced, and the efficient desorption is promoted. At the same time, all components and preparation processes are environmentally friendly and harmless to human body.

This application discloses a motor drive control method, apparatus, device, storage medium, and product, relating to the field of motor control technology. The disclosed motor drive control method includes: acquiring current motor parameters of a target vehicle under current operating conditions, wherein the motor parameters include an electrical frequency; if the electromagnetic force fluctuation frequency generated by the current harmonic frequency corresponding to the electrical frequency is within the resonant frequency range of the target vehicle, determining a target synchronous modulation scheme corresponding to the electrical frequency from a preset set of synchronous modulation schemes; and controlling the drive circuit of the target vehicle based on the target synchronous modulation scheme. This application uses a flexible synchronous modulation scheme instead of an asynchronous modulation method to avoid increasing the switching frequency, thereby reducing the losses in the new energy vehicle motor drive system.

The invention provides mannosylated beta-lactoglobulin-curcumin nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of medicines. The preparation method provided by the invention comprises the following steps: mixing a mannose solution and a beta-lactoglobulin solution, and sequentially carrying out first reaction, dialysis and freeze drying to obtain a mannosylated beta-lactoglobulin monomer; the preparation method comprises the following steps: dissolving mannosylated beta-lactoglobulin in water to obtain a mannosylated beta-lactoglobulin monomer solution, then mixing the mannosylated beta-lactoglobulin monomer solution with a first curcumin-ethanol solution, then adjusting the pH value, then sequentially carrying out incubation and a second reaction to obtain a mannosylated beta-lactoglobulin-curcumin compound, then carrying out a third reaction on the mannosylated beta-lactoglobulin-curcumin compound and a second curcumin-ethanol solution to obtain the mannosylated beta- and finally, dissolving the mannosylated beta-lactoglobulin-curcumin primary nano-particles in an MES buffer solution, adding absolute ethyl alcohol, and carrying out a fourth reaction, so as to obtain the mannosylated beta-lactoglobulin-curcumin secondary nano-particles.

The invention discloses a composite phase change heat storage material as well as a preparation method and application thereof, and belongs to the technical field of phase change heat storage materials. The invention discloses a composite phase change heat storage material which is prepared from the following components in percentage by mass: 50%-75% of a phase change core material, 20%-45% of a porous carrier matrix and 3%-10% of a heat conduction reinforcing agent, the porous carrier substrate is diatomite; the heat conduction reinforcing agent is expanded graphite. The technical problem that an existing phase change heat storage material is difficult to have high heat storage density, excellent shaping effect, high heat conductivity and good mechanical property at the same time is remarkably solved.

The invention relates to the technical field of air purification, in particular to a preparation method and application of a potassium permanganate alumina ball air purification filter material, the preparation method comprises the following steps: S1, cleaning and drying an activated alumina ball to obtain a pretreated alumina ball; s2, dissolving potassium permanganate in deionized water, and adding a stabilizer to prepare a potassium permanganate solution; s3, adding the pretreated alumina balls into a potassium permanganate solution to obtain impregnated alumina balls; s4, taking out the impregnated alumina balls, and drying to obtain dried alumina balls; s5, soaking the dried alumina balls in an organic acid solution, taking out the alumina balls, leaching the alumina balls, and drying the alumina balls to obtain treated alumina balls; and S6, putting the treated aluminum oxide balls into a sealed container, and aging to obtain the aluminum oxide balls. The potassium permanganate alumina ball air purification filter material obtained by the preparation method has the advantages of uniform potassium permanganate loading, firm combination, good stability and high purification efficiency.

The application discloses a kind of preparation auricularia auricular polysaccharide / casein emulsion gel and its preparation method and application.The preparation method of the application includes the following steps: 1) auricularia auricular polysaccharide aqueous solution is mixed with casein aqueous solution, to obtain protein-polysaccharide complex solution;2) water phase is mixed into oil phase, the water phase is the protein-polysaccharide complex solution, and the obtained mixture is ultrasonically homogenized, to obtain emulsion;3) gluconic acid-delta-lactone is added to the emulsion and mixed, incubated, to obtain auricularia auricular polysaccharide / casein emulsion gel.The auricularia auricular polysaccharide / casein emulsion gel disclosed in the application is applied to curcumin encapsulation.After adding auricularia auricular polysaccharide, the gel performance of casein emulsion gel is significantly improved;After adding auricularia auricular polysaccharide, the loading rate of curcumin loaded in casein emulsion gel is significantly increased.

The application belongs to the technical field of nanomaterials and its preparation, and specifically discloses a sesame leaf exosome nanoparticle, a preparation method thereof and application thereof in active ingredient delivery. The preparation method of the exosome nanoparticle comprises the following steps: homogenizing sesame leaves, performing differential centrifugation, and then performing ultrafiltration to obtain supernatant concentrate of sesame leaf exosomes; then, the obtained supernatant concentrate is subjected to exosome purification through an ultra-pure chromatographic column; subsequently, the obtained exosomes are further concentrated through an ultrafiltration tube, and the exosome nanoparticle is obtained. The preparation method has the advantages of fewer extraction steps, high extraction efficiency, mild conditions, high purity of the obtained product and the like. The exosome nanoparticle can realize high loading of natural active ingredients through ultrasonic auxiliary technology, slow down the release speed of the loaded active ingredients, improve the light stability and bioavailability of the active ingredients, enhance the anti-inflammatory capacity of the active ingredients, and has good biocompatibility and low toxicity.

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 discloses an anti-corrosion coating with a porous material-supported phase change core and its preparation method, belonging to the field of coating preparation technology. It consists of core functional components, film-forming components, and auxiliary components. The core functional components include porous boron nitride, acid-modified attapulgite, paraffin-decanoic acid eutectic phase change material, and sodium molybdate-benzotriazole composite corrosion inhibitor. The film-forming components include epoxy-organosilicon hybrid resin, polyamide 650, KH550 silane coupling agent, and anhydrous ethanol. The auxiliary components include ammonium polyphosphate-pentaerythritol composite intumescent flame retardant, polydimethylsiloxane, and xylene-n-butanol mixed solvent. This invention's porous material-supported phase change core anti-corrosion coating differs from traditional single-function coatings, achieving integrated corrosion protection, self-healing, and fire resistance, reducing the cost of multi-layer coatings. The multi-level porous carrier has a high loading rate and strong stability. The phase change core material exhibits no leakage or migration, cures at room temperature, is easy to apply, and is compatible with existing coating processes.

The invention discloses a veterinary drug additive carrier and a production process and application thereof, and relates to the technical field of pharmaceutical preparations, the production process comprises the following steps: 1, adding beta-cyclodextrin and epichlorohydrin into a Tris-HCl buffer solution, uniformly mixing in a constant-temperature water bath, adding a catalyst in batches, carrying out microwave radiation, dialyzing and purifying, and freeze-drying to form a molecular inclusion layer, so as to obtain a beta-cyclodextrin / epichlorohydrin composite material; the beta-cyclodextrin cross-linked polymer is obtained; 2, ball-milling and mixing a beta-cyclodextrin cross-linked polymer and a silica gel nano-composite to obtain a carrier; the carrier is applied to veterinary drugs, beta-cyclodextrin is carboxylated, then a carboxyl-containing beta-cyclodextrin cross-linked polymer is prepared, NHS is introduced, guanidyl modified chitosan is introduced into a silica gel nanocomposite, amino in the silica gel nanocomposite and NHS in the beta-cyclodextrin cross-linked polymer can form a stable amido bond, and the guanidyl modified chitosan is added into the silica gel nanocomposite. The separation of the carrier material in the subsequent processing is avoided, and the effect of the medicine in the body is synergistically improved.

The invention discloses a remote control compensation device capable of bidirectional reactive power compensation and harmonic treatment, and belongs to the technical field of electric energy quality treatment. The problems that an existing device can only provide fixed reactive power compensation and cannot provide needed reactive power compensation according to reactive power changes are solved; and only capacitive compensation is mainly used, the requirement of compensating inductive reactive power cannot be met, and meanwhile, remote control cannot be realized. The remote control device capable of bidirectional reactive compensation and harmonic suppression is applied to the power distribution network, so that the power transmission capacity of the power distribution network and the power supply capacity of a rural power grid distribution transformer can be effectively improved, and the requirements of energy conservation and consumption reduction of the low-voltage power distribution network are met. Meanwhile, the voltage level of the power distribution area can be effectively adjusted, reactive power in the system can be compensated in real time, normal voltage of users at the tail end of the area during the load peak period is guaranteed, three-phase load balance of each node of the area is achieved, and the power supply quality of the area is remarkably improved.