719results 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.

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 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.

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 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 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 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.