722results about How to "Release stability" patented technology

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.

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 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.

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 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 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.