722results about How to "Release stability" patented technology

The invention provides sustained-release chlorine dioxide gel comprising the following components by weight percent: 0.1% to 5.0% of chlorine dioxide precursor, 1.0% to 10.0% of gel, 0.01% to 2.0% of chelating agent, 0.1% to 10.0% of inclusion agent, 30% to 70% of activating agent, 0.1% to 5.0% of sustained-release agent, 0.1% to 5.0% of stabilizing agent and deionized water in balancing amount. The sustained-release chlorine dioxide gel of the invention is capable of conducting the stable sustained-release process at a certain rate for 3 to 6 months, so the sustained-release chlorine dioxidegel has the advantages of long release period, uniform and stable release rate and lasting effect; the sustained-release chlorine dioxide gel is capable of not only removing formaldehyde from indoor air in an effective, safe and lasting way and ensuring the high removal rate of formaldehyde, but also disinfecting and sterilizing the indoor air continuously and thoroughly purifying the indoor air;moreover, the invention dispenses with high-purity chlorine dioxide gas and further has the advantages of simple preparation method and convenient operation.

The invention relates to a preparation method and application of electrospinning nanofiber. The preparation method is as follows: synthetic and / or natural polymer materials are dissolved in a volatilesolvent under normal temperature and normal pressure, functional substances are added, and nanofibers are obtained by electrospinning; the functional substances comprise, but are not limited to an odor substance, an organic fluorescent compound, a pigment, a temperature sensitive luminescent and color changing material, a cell growth factor, a hemostatic substance, one or a plurality of nutrientsincluding hyaluronic acid, collagen, and the like which promote skin growth. The nanofiber made by electrospinning has the special effects of sterilization, aromatic odor, fluorescent luminescence, multiple colors, temperature sensitive luminescence and color-changing, promoting wound healing, promoting inhibition and interfering with body function, maintaining skin cell vitality and the like. The method can be used in air purification, automotive air purification, fresh air systems, medical, beauty care, and other nanofiber products.

The invention discloses a color drought-resistance water-retention sustained-release compound fertilizer and a method for producing the same, wherein the method comprises the followings steps of: measuring, crushing and uniformly mixing fertilizer raw materials, granulating by adopting an ammonia-acid method rotary drum granulating process, performing one-stage drying, semi-cooling and screening of grains, and sending the mixture to a coating machine; adopting a continuous melting rotary drum film-coating method coating process to perform compressed air atomization and uniform coating of color coating oil sprayed by a special nozzle; and adding a water-retaining agent and an anti-adhesive agent by a screw conveyor, and performing full stirring, cooling and packaging to obtain the finishedproducts. The color drought-resistance water-retention sustained-release compound fertilizer has the effects of drought resistance, water retention, nutrient preservation, soil condition improvement and environmental protection, and the appearance of the fertilizer has color marks; and when the fertilizer is applied to crops, the fertilizer has the advantages of increasing yield and incoming, along with simple production method, convenient operation, low cost and high benefits.

The invention discloses a mosquito repelling gel composition with natural plant essential oil. The mosquito repelling gel composition comprises the following raw materials in percentage by weight: 0.2-5% of water-soluble colloid, 0.2-10% of natural plant essential oil, 0-5% of water-soluble polymers, 1-20% of low alcohols, 0.5-20% of solubilizing agent, 0-0.5% of gel enhancer and the balance of deionized water. The water-soluble colloid in mosquito repelling gel disclosed by the invention can form a reticular or multi-dimensional spiral structure in a water medium and can be stably dispersed or used for wrapping the natural plant essential oil, so that the essential oil is stably and continuously released, and a better mosquito repelling rate can be kept in the whole release process. A mosquito repelling component adopted in the product is purely-natural plant essential oil which is safe to the environment and human bodies; the product is in a gel form; the essential oil is stably volatilized at normal temperature; and when used, the mosquito repelling gel composition does not need to be in direct contact with the skins of human bodies, is convenient to carry and can be continuously used for repelling mosquitoes indoors and outdoors for a long term.

A processing method of tobacco raw materials for heating non-combustion tobacco products sequentially includes: adjusting moisture of the tobacco raw materials, heating at 100-300 DEG C for 0.5-8 hours; cooling at room temperature; balancing at 22 DEG C and 60% of moisture for 24-120 hours, applying glycoside aroma precursors, and standing for 48-120 hours to guarantee that the aroma precursors are fully absorbed by the raw materials; applying polyol to the raw materials after perfuming, and standing for 48-120 hours under a seal state to guarantee that the polyol is fully absorbed by the raw materials; balancing for 24-120 hours to obtain the tobacco raw materials for heating the non-combustion tobacco products. The tobacco raw materials processed by the method has the advantages that smoke releasing performance of the tobacco raw materials during heating of the non-combustion tobacco products is increased evidently, sensory quality of the released smoke is improved evidently, and good satisfaction and comfortableness are achieved.

The invention discloses a stepping uniform electric heating cigarette, which comprises a tobacco filler, a power area, a heating area and a cigarette holder area, wherein the power area and the heating area are sequentially communicated with the cigarette holder area through an airflow passage; the power area consists of a rechargeable battery, a control circuit and a switch, which are electrically connected; the heating area comprises an atomization device, a stepping propulsion device and a heating element; the atomization device consists of a liquid storage cavity and a capillary rod or a capillary tube bundle; the stepping propulsion device and the heating element are electrically connected with the control circuit in the power area through the same switch; the heating element consists of an inner heating sleeve and an outer heating sleeve; the inner heating sleeve is sleeved on the capillary rod or the capillary tube bundle; the outer heating sleeve is sleeved on the inner heating sleeve; a porous ceramic plate is arranged at a joint of the heating area and the cigarette holder area. According to the stepping uniform electric heating cigarette, the tobacco filler is progressively propelled and uniformly heated, and a tobacco type aroma substance in the filler can be stably released.

The invention discloses a nerve conduit and a preparation method thereof. The nerve conduit consists of an inner layer, an outer layer and at least one minitype cavity for storing a bioactive factor solution, wherein the inner layer is of a hydrophilic cell scaffold layer, and the outer layer is of a hydrophobic nerve conduit scaffold layer. The nerve conduit can further comprise a transition layer between the inner layer and the outer layer. The preparation method of the nerve conduit comprises the steps of preparing the inner layer by adopting an electrostatic spinning method, then adding the material for preparing the cavity, then preparing the outer layer, and taking out or dissolving the material for preparing the cavity, thus obtaining the nerve conduit. The nerve conduit has the minitype cavity, so that bioactive factors can be loaded by a manner of injection, soaking and the like as required before operation, thus not only leading the production quality to be easily controlled, but also being capable of greatly improving the survival rate of the bioactive factors, more efficiently promoting the regeneration of nerves, and enhancing the restoration effect of nerves.

Said invention provides equality size and stable dispersion chitosan microsphere and microcapsule medicine carrier to protein, polypeptide, anticancer agent, hormone etc hydrophilicity medicine and oil soluble medicine for releasing control and targeting administration. The characteristics are that, 1, equality size and stable dispersion chitosan microsphere and microcapsule medicine carrier is made by dissolving hydrophilicity medicine in aqueous solution of acetic acid, pressuring said water phase into oil phase through microporous membrane to get equality size emulsion drop, 2, dissolving oil soluble medicine in oil solvent and hydrophilicity medicine in aqueous solution of acetic acid, preparing O#-[1] / W colostrum by homogeneous phase emulsifier, pressuring it into oil phase through microporous membrane to obtain equality size composite emulsion drop, solidifying it to obtain equality size and stable dispersion chitosan microsphere and microcapsule medicine carrie. Under optimized condition, the diameter distribution coefficient of microsphere and microcapsule are controlled within 11 % , the diameter are controlled freely in 1-100 micrometer.

The invention relates to a silver-loaded antibacterial dressing and a preparation method thereof. The preparation method comprises the steps of dissolving silver salt components such as silver nitrate and silver acetate and stabilizing agent components such as poly-amido compounds, poly-hydroxyl compounds and poly-carboxyl compounds into deionized water, and then mixing the constituents uniformly, so that a silver salt antibacterial solution is obtained; dipping or soaking an antibacterial dressing substrate into the silver salt antibacterial solution, and conducting drying, so that silver loading of the antibacterial dressing substrate is achieved. The silver loading method of the silver ion antibacterial dressing is simple, easy to implement and suitable for large-scale production; the obtained silver-loaded antibacterial dressing has the excellent antibacterial property, silver ions can be released stably, oxidizing discoloration does not occur easily, falling of silver at a wound and pigment deposition are not caused easily, and the silver-loaded antibacterial dressing and the preparation method thereof can be widely applied to silver loading processing of various silver ion antibacterial dressings.

The invention discloses a rope net unfolding device based on a thin-wall type stretching arm, which is used for ontrack cleaning of space debris. The device does not need to be driven by external power, and a net body structure is driven to unfold by strain energy stored by the thin-wall type stretching arm, so as to capture the space debris. Through adoption of a thin-wall structure, the stretching arm has high flexibility and light weight, the stretching arm stretches out and contracts back to store strain energy and to enable the mechanism to achieve a high magnification ratio. Due to the design that the stretching arm drives the net body structure to unfold, the unfolding process of the net body structure has good controllability; and due to the design of a press plate and a limiting pin, the unfolding synchronism is ensured.

The invention relates to a production method and application of a non-continuous temperature-dependent phase change gel incense-carrying filter stick. The production method comprises the steps of preparation of temperature-dependent phase change gel colloid and production of a non-continuous temperature-dependent phase change gel incense-carrying filter stick. The non-continuous temperature-dependent phase change gel incense-carrying filter stick is large in incense carrying amount, stable in incense carrying amount, long in incense holding time and less in volatilized flavor substances, whena cigarette is smoked, the heating effect of the smoke heat converts solid state gel into liquid gel, aroma components loaded in the gel are slowly and uniformly released, and the tastes of the frontsection and the rear section of the cigarette are kept consistent. By means of the cigarette which is prepared from the non-continuous gel filter stick, the oral cavity cannot be in direct contact with the gel when a consumer smokes the cigarette, and the discomfort and the psychological antipathy caused when the oral cavity of the consumer is in contact with the gel are avoided; meanwhile, duringsmoking, the fragrance concentration and the flavor of the front section and the rear section are stable, and the cigarette smoking quality is effectively improved.

A refined rose oil microsoftgel able to be released smoothly is proportionally prepared from refined rose oil and beta-cyclodextrin through dispersing said refined rose oil in the aqueous solution of beta-cyclodextrin for the first coating, adding maltodextrin or instant Arabic gum, stirring for the second coating, drying to become small particles, and spray coating.

The invention relates to a tobacco product, in particular to a functional hard candy and a preparation method thereof. The functional hard candy adds tobacco materials and maca combinations into hard candy substrates, can slowly dissolve in oral cavities to steadily release nicotine and maca combination components, is low in content of the nicotine and irritation, supplies appropriate physical satisfaction and comfort feeling for consumers, has the effects of resisting fatigue and improving mental states, reduces dependency to nicotine, and can play the effect of improving smoking habits for long-term use. The functional hard candy is a novel no-smoke tobacco product which can be used in public places.

The invention belongs to the model facility of hydraulics experiment, and specifically relates to a device for stable, high-speed and variable-angle water entry experiment of rotating body, comprising a transparent water tank, a data acquisition system which the connection is controlled by the industrial personal computer as well as a release device of water entry objects arranged above the transparent water tank, the release device of water entry objects comprises an entry angle protractor and a gas guide rod under flexible connection with a horizontal bracing piece, the bottom sleeve connection of the gas guide rod is arranged with the rotary gear and rotating head motor under coordination with the rotary gear, the motor operation drivers the rotation of the water entry objects. The gas guide rod is under sealed connection with a gas supply device via the high-pressure windpipe, the gas supply device comprises a high-pressure gas cylinder with the electro-magnetic switch valve and a air compressor connecting to the high-pressure gas cylinder, negative or positive pressure is formed in the high-pressure gas cylinder by controlling the operation of the air compressor, so as to control absorption and high-speed release of the water entry objects. The device for stable, high-speed and variable-angle water entry experiment of rotating body can stably release different forms of water entry objects under high-speed rotation at high speed, and can accurately control the object entry angle.

The invention relates to a control equipment for a vehicle. In an embodiment method of the invention, when returning from the neutral control, an air damper is slowly opened unrelated to the rolling reduction of the accelerator pedal by drivers from the return of the neutral control after the delayed time, thereby restraining the early increase of the motor torque. Besides, the braking pressure is smoothly released from the neutral control return after the delayed time. By the method, the environment (opening of the air damper, braking pressure) returning from the neutral control is suitably set considering the joint of the forward clutch, thereby restraining the impact when returning from the neutral control.

The invention discloses a preparation method of calcium phosphate bone cement simultaneously releasing zinc ions and silicate ions. The preparation method comprises the following steps that (1) calcium phosphate bone cement powder, inorganic salt containing zinc ions and inorganic salt containing silicate ions are mixed evenly to obtain the calcium phosphate bone cement containing zinc and silicon elements, namely a solid phase; (2) the solid phase cement obtained through the step (1) and a liquid phase are blended, wherein the mass ratio of the liquid phase volume to the solid phase powder is 0.3-0.6 mL / g. The zinc ions and the silicate ions are simultaneously added into the calcium phosphate bone cement for the first time, the calcium phosphate bone cement has the advantages of having high mechanical strength and appropriate setting time and being capable of continuously releasing the zinc ions and silicate ions for a long time and controllable in release amount, and meanwhile the two different types of released functional ions can play roles of synergistically inhibiting bone absorption and promoting bone repair. Compared with traditional calcium phosphate bone cement, the calcium phosphate bone cement has more excellent bone defect repairing effect and wider clinical application prospect.

The invention discloses a selenium sustained-release edible fungus additive for selenium-rich culturing of edible fungus. The selenium sustained-release edible fungus additive is characterized by comprising the following components in parts by weight: 1-20 parts of selenium source, 950-1000 parts of attapulgite clay or modified attapulgite clay and 5-40 parts of beta-cyclodextrin, wherein the modified attapulgite clay is one-dimensional nano-state attapulgite clay which is modified by hydrogen type ion source (H<+>) irradiation. The composition achieves a stable release condition after 2-3 hours in a solution state, the selenium concentration in the solution state can achieve 40-60% of the original selenium concentration in the selenium sustained-release additive, and the stable release condition can be sustained for 90-120 days.

The invention relates to a biological deoxidation denitrification device in oxidative environment groundwater. The device is a double-layer double-media permeable reactive barrier, the permeable reactive barrier is formed by an upstream layer and a downstream layer, the upstream layer is loaded with pine barks, and the downstream layer is loaded with zero valent iron. The invention also provides a biological deoxidation-heterotrophic / autotrophic denitrification combination method in the oxidative environment groundwater. The method comprises a process that the biological deoxidation denitrification device is laid in nitrate nitrogen polluted oxidative environment groundwater pollution plumage downstream soil and an underground water layer, and the device is vertical with the flow direction of the underground water.

The invention discloses a linear polyethylene glycol fragrance slow-release cigarette filter rod and a production method thereof. A polyethylene glycol flavored line is arranged in the linear polyethylene glycol fragrance slow-release cigarette filter rod along the axis direction of the linear polyethylene glycol fragrance slow-release cigarette filter rod and phenylethyl alcohol flavor components are embedded in the linear polyethylene glycol fragrance slow-release cigarette filter rod with the polyethylene glycol flavored line as a carrier. The production method includes the following steps that polyethylene glycol is heated to 60 to 80 DEG C to be completely melted; the phenylethyl alcohol flavor components with the proportion of 5 weight percentage are added and uniformly stirred; liquid polyethylene glycol containing phenylethyl alcohol passes through a pore with a 0.5 mm pore diameter to form into trickles; the trickles directly flow on the surface of filter tows with the proportion of 40 mg per branch after opening of the filter tows; and the liquid polyethylene glycol can be cooled and solidified in a filter to form into the flavored line after the liquid polyethylene glycol passes through an opium pipe and the filter is solidification formed. According to the linear polyethylene glycol fragrance slow-release cigarette filter rod and the production method thereof, the problems that the release of the flavor components of favored line filters is non-uniform, the adsorbed quantity of the flavor components is small, the fragrance depositing time is short, the transfer efficiency is low and the like can be greatly solved.

The invention relates to a method for preparing a small molecule hydrophilic drug-embedded sustained-release capsule. The method comprises the following steps: filtering a prepared'internal aqueous phase / oil phase / external aqueous phase' pre-multi-emulsion solution through a microporous membrane; and then removing a solvent, washing and drying to obtain the small molecule hydrophilic drug-embedded sustained-release capsule, wherein the internal aqueous phase comprises a small molecule hydrophilic drug and a thickening agent. The small molecule hydrophilic drug-embedded sustained-release capsule provided by the invention has the advantages of uniform grain diameter, high embedding rate, low burst-release rate, stable drug release and long action.

The present invention provides the preparation process and usage of slow released naltrexone (NTX) preparation, which is used in the rehabilitation after eliminating opium addiction. The NTX preparation includes NTX as the opium receptor antagonist and matrix of biodegradable polymer material polylactic acid. The preparation process includes emulsification and solvent volatilization to prepare microsphere, pressing into tablet, coating with polylactic acid and other steps. The NTX preparation has great medicine carrying amount and high encapsulating rate, and may reach blood medicine concentration for over 360 days. When it is used, the NTX preparation is injected with special injector into subcutaneous fat for NTX to release slowly and persistently to maintain the effective blood medicine concentration.

The present invention discloses a kind of slow releasing enteric soluble coated tablet containing hyperzine A and its preparation process. Enteric soluble coating technology is adopted to overcome the bad effect of lower pH in stomach on the diffusion of medicine in skeleton tablet to ensure the stable, slow and complete release of medicine. The slow releasing tablet contains hyperzine A as reversible anticholinesterase and has one layer of enteric soluble polymer film coating outside the skeleton slow releasing layer. The active medicine component may be also various pharmaceutically acceptable acid salts of hyperzine A. Each tablet contains hyperzine A I n10-500 microgram and has sustained release time of 20 hr.

The invention discloses a nerve conduit and a preparation method thereof. The nerve conduit comprises an inner layer, a transition layer, an outer layer and at least one cavity used for storing a bioactive factor solution, wherein the outer surface of the inner layer is sequentially coated with the transition layer and the outer layer; the cavity is positioned between the inner surface of the outer layer and the outer surface of the transition layer and / or between the outer surface of the inner layer and the inner surface of the transition layer; the inner layer is a hydrophilic cytoskeleton layer made by adopting an electrostatic spinning method; and the outer layer is a hydrophobic nerve conduit scaffold layer made by adopting the electrostatic spinning method. The nerve conduit can be used for loading bioactive factors before an operation in a required mode, such as injection, soaking and the like due to the miniature cavity, so that the production quality of the product is easy to control, the survival rate of the bioactive factor can be greatly improved, the nerve regeneration can be promoted in high efficiency, and the nerve repairing effect can be reinforced.

The invention relates to a konjac breath-refreshing cigarette holder filter core and a preparation method thereof. The preparation method comprises steps of preparing konjac glucomannan alkaline aqueous solution, preparing konjac glucomannan emulsion, preparing konjac glucomannan gel microspheres, drying konjac glucomannan gel microspheres, preparing mint konjac glucomannan gel microspheres, preparing medicine-carrying konjac glucomannan gel microspheres, preparing konjac fibers and preparing a filter core. The konjac breath-refreshing cigarette holder filter core takes konjac as the main raw material, the konjac has effective fiber plasticity, adsorbability and slow-release property, the amount of toxic substance reaching the oral cavity can be reduced, the case that after a person smokes, the teeth become yellow can be avoided; trace and slow-releasing medicine is contained in the filter core, the medicine effect is guaranteed; all the materials are very environmentally-friendly, and can be degraded in the air easily, are nonhazardous and do not pollute the environment; and the smoker can feel refreshed, the nasal cavity is not blocked, and the mental state of the smoker is better.

The invention provides a chitosan drug carrying microsphere with uniform size, high embedding rate and high drug activity maintaining rate characterized in that the embedding ratio of the medicament can be as high as over 75%, the activity sustaining ratio of the active medicament can reach 95%, and it can be released stably externally. The invention is also characterized that hydrophilic medicament is dissolved into the acetate-sodium acetate buffer solution of chitosan, the aqueous phase is pressed into the oil phase with pressure through microporous membrane, the obtained milk-like droplet with uniform dimension is subject to cross bonding solidification through two-step hardening.

The invention relates to the technical field of medical plastic surgery, in particular to the technical field of facial filling and anti-wrinkle, in particular, it is an injection filling cosmetic modification anti-aging, skin beautification and facial rejuvenation material. The preparation formula of the present invention includes hyaluronic acid, collagen, vitamin E and PLGA. The preparation method comprises: 1) preparing high-viscosity gel; 2) preparing PLGA nano-microspheres; 3) fully mixing high-viscosity gel and PLGA nano-microspheres; 4) sterilizing and filling. Compared with the prior art, the present invention has the beneficial effect that: the combined use of collagen and hyaluronic acid reduces skin erythema, swelling, hardening or itching, muscle pain, urticaria or Other symptoms such as rash. It reduces the probability of severe complications such as peripheral blood circulation embolism, skin necrosis, retinal artery embolism, and cardiocerebral artery embolism that may be caused by simple hyaluronic acid injection, and the safety of product use is improved.

The invention provides a preparation method of a buckwheat flavone microcapsule, which comprises the following steps: 1) pretreating: drying buckwheat grain, buckwheat shell, buckwheat husk or buckwheat stem leaf, sieving after crushing for standby to obtain buckwheat powder; 2) extracting; 3) separating and purifying; 4) preparing a capsule emulsion: uniformly mixing a core material, a wall material and an emulsifier to prepare a buckwheat flavone microcapsule emulsion; 5) spray drying to obtain the buckwheat flavone microcapsule. The invention has the advantages that: 1, the activity of an active component flavone substance in buckwheat is protected; 2, the buckwheat flavone is prevented from damage of gastric acid, has certain targeting after microencapsulation, and has good enteric solubility but insolublility in stomach; 3, the bitter taste of buckwheat is covered; 4, the release speed is controlled, the flavone substance can not be stored in vivo, and the concentration of the flavone substance is rapidly increased in vivo after taking and rapidly decreasing due to metabolism degradation effect, the microencapsulation enables a slow release function and releases functional factors in certain time and scope.

The invention provides an under-actuated release control method based on a nonlinear space tether system. The method comprises the following steps: 1, a dumbbell model is adopted, system dynamics differential equations are built according to a second kind Lagrange equation, and a dimensionless form is introduced in the differential equations; 2, based on a normal form expression for the above dynamics differential equations, expected values for a system in-plane pitching angle and an out-plane rolling angle are set, and the balance position of the system in the release process is obtained; 3, starting from the balance position of the system, a tether length change control law for realizing tether release is deduced and obtained; and 4, the range for the expected in-plane pitching angle is determined to ensure the tether release process to be asymptotically stable under effects of the control law. Numerical simulations show that the space tether can be released asymptotically stably under effects of the release control method provided by the invention, and an attractor capable of covering the balance point and an attraction domain with enough thickness can be found out.

The invention discloses an environmental-friendly mercuric chloride metal catalyst, which consists of an inhomogeneous mercuric chloride metal catalyst and a polymer coated on the surface of the inhomogeneous mercuric chloride metal catalyst in a film mode. In a reaction of producing vinyl chloride by acetylene hydrochlorination, due to the adoption of the catalyst, on the premise of ensuring the activity of the catalyst and the selectivity of vinyl chloride, the environment and health problems caused by Hg sublimation are reduced. The catalyst has the characteristics of high catalyzing efficiency, low toxicity, mild catalyst release and the like. The invention also discloses a preparation method of the environmental-friendly mercuric chloride metal catalyst. In the preparing process, few parameters need to be controlled. The preparation method has high repeatability and strong controllability and is easy for industrial production.

The invention relates to the field of water body habitat restoration, in particular to a microorganism restoration method for a water body environment and an bottom mud polluted environment at a junction of seawater, fresh water and brackish water. According to the method, a probiotic capable of degrading, adsorbing and absorbing pollutants is combined with aquatic animal bait by adopting a gel method, and microorganisms in the probiotic are directly released into a water body and bottom mud to restore the water body habitat by immobilization and slow release actions, and can also be eaten by aquatic animals together with the bait to be released to the water body habitat through feces to continue exerting an restoration effect. With the method, the probiotic is high in survival rate and multiplication rate, and rapid and persistent in water body habitat restoration effect; and after eaten by the aquatic animals together with the bait, the probiotic can be multiplied secondarily and dispersed and spread once again, so that the water body environment can be restored, the utilization ratio of the bait can be increased, the immunity of the animals is improved, and the cultivation benefit is increased.