68results about How to "Avoid photolysis" patented technology

The invention provides a catheter for optical ablation of tissue in a living body, the catheter including: a distal end; a proximal end; an elongate catheter body coupled between the distal end and the proximal end; a light emission device at the distal end and configured to emit an ablation light having characteristics selected to regulate an optically regulatable transcription control element operably linked to a nucleic acid sequence for a gene product, the expression of which gene product in cells directly or indirectly kills cells; and a projection control mechanism coupled to the light emission device and configured to control an effectively illuminated area where the optically regulatable transcription control element is effectively regulatable by the ablation light projected from the light emission device. Also provided is a system which includes the catheter, and methods to prevent, inhibit or treat AF which employ an expression cassette and/or one or more selected wavelengths of light.

To provide a compound having an effect for preventing photolysis of a liquid crystal composition, and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1), a liquid crystal composition contains the compound, and a liquid crystal display device includes the composition:

M(Z-Q)_a(R^b)_b  (1)

wherein, in formula (1), a is 1 to 4, and b is a numerical value: (4−a); M is an organic group; Z is a single bond or the like; and Q is a monovalent group represented by formula (Q-1), (Q-2) or (Q-3), in which R^a and R^b are hydrogen, alkyl or the like.

The invention discloses an efficient stable perovskite solar cell and a preparation method thereof. The cell is characterized in that the cell structurally comprises a transparent conductive substrate, a window layer, a perovskite light absorption layer and an anti-ultraviolet hydrophobic layer from bottom to top in sequence. Compared with a traditional perovskite solar cell, the efficient stableperovskite solar cell has the advantages that one layer of anti-ultraviolet hydrophobic layer is added to the surface of the perovskite light absorption layer, on one hand, the anti-ultraviolet hydrophobic layer can have the dampproof and protective effects, and thus the perovskite light absorption layer is prevented from being hydrolyzed; on the other hand, the anti-ultraviolet hydrophobic layercan also absorb ultraviolet light, so that the perovskite light absorption layer is prevented from being photolyzed, and the ultraviolet light can be converted into visible light and can be used. Therefore, the efficient stable perovskite solar cell has remarkable advantages that the stability and photoelectric conversion efficiency of the efficient stable perovskite solar cell are improved.

The invention relates to an antibacterial drug for livestock, particularly a preparation method of a smellless coated enrofloxacin preparation. The antibacterial drug for livestock is prepared from the following raw materials in percentage by weight: 5-15% of enrofloxacin, 0.01-0.1% of polyacrylic resin II, 1-10% of polyethyleneglycol, 50-70% of stearic acid, 25-45% of beta-cyclodextrin, 50-60% of water and 30-50% of anhydrous ethanol. The preparation method comprises the following steps: evenly stirring beta-cyclodextrin and water, adding enrofloxacin and polyethyleneglycol, stirring, drying the obtained inclusion compound, and pulverizing; heating stearic acid to a transparent liquid, adding the pulverized inclusion compound, and carrying out spray freeze-drying to obtain microcapsule particles; and finally, dissolving a hydrophobic material in anhydrous ethanol, and carrying out bottom-spray coating on the microcapsule particles to obtain the finished product. After the enrofloxacin is coated, the bitterness is covered up, so that the enrofloxacin does not stimulate the stomach, thereby preventing the ingesting animals from gastrospasm and nausea, and thus, the enrofloxacin can be orally dosed to pigs; the multilayer coating prevents the enrofloxacin from composition under the light, and can be mixed in a wet state; and the invention is convenient for production, and fully displays the powerful bactericidal action of enrofloxacin.

The invention belongs to the field of daily chemicals, and particularly relates to a skin-care composition with a sunscreen effect as well as a preparation method and application thereof. The skin-care composition, provided by the invention, comprises the following components: a natural plant extract, palmitoyl tetrapeptide-7, vitamin E, oryzanol and oligomeric proanthocyanidin, wherein the natural plant extract contains a variety of natural plant sunscreen extracts, has a very good overall effect of absorbing ultraviolet light, scavenging free radicals, inhibiting generation of melanin, inhibiting release of allergy mediators, protecting fibroblasts, inhibiting the activity of matrix metalloproteinase and the like, and has a very good sunscreen effect; the oligomeric proanthocyanidin can be used as a protective agent for the oryzanol and the vitamin E, is free of skin irritation, has an antioxidant protective effect on skin, and can improve the skin-care and sunscreen effect of the composition.

The invention discloses a preparation method and application of water-soluble insect-resistant and mosquito-repellent plant oil. The plant oil is included in a water-soluble cyclodextrin derivative to prepare a water-soluble inclusion compound. One or more kinds of inclusion compounds are taken for compounding to prepare a water spray agent or fumigant or powder used for insect prevention, mould prevention, bacteriostasis, freshness preservation and other aspects of grain, food materials, food, uncooked and cooked meat products and aquatic products. In addition, the plant oil can also be used for repelling mosquitoes and flies in a public environment to keep the environment sanitary. The plant oil has the advantages of being made from all natural plant ingredients without any organic solvent.

A microsoftgel-type green agricultural chemical features that its microsoftgel is composed of core and skin. It is prepared through dissolving raw agricultural chemical in solvent, adding assistant, plant oil, surfactant and solvent to obtain core, hydrolyzing the animal glue, plant gum and sea product gelatin, filtering, mixing to obtain skin, mixing said core with skin, stirring at 200-600 rpm, and naturally cooling for 2 hr. Its advantages are high effect and durability, and low cost.

The invention discloses a pellet type pantoprazole sodium enteric capsule and a preparation method thereof. The pellet type pantoprazole sodium enteric capsule is a sustained-release preparation composed of a capsule shell and uniformly mixed pantoprazole sodium pellets held in the capsule shell; the pantoprazole sodium pellet from inside to outside in turn comprises a blank pellet core, a main drug layer, an isolation layer and an enteric layer, wherein the weight of the main drug layer is 14-55% of that of the blank pellet core, the weight of the isolation layer is 9-10% of that of the total weight of the blank pellet core and the main drug layer, the weight of the enteric layer is 28-32% of that of the total weight of the blank pellet core, the main drug layer and the isolation layer; 40-60% of that of the pantoprazole sodium pellet is coated with a pigmented layer on the outside of the enteric layer; the weight of the pigmented layer is 0.5-1% of that of the total weight of the blank pellet core, the main drug layer, the isolation layer and the enteric layer; the diameter of the blank pellet core is 0.8-1.0 mm; the granularity of the pantoprazole sodium pellet is 14-20 mesh; each capsule contains 20-40 mg of the pantoprazole sodium. The pellet type pantoprazole sodium enteric capsule has the advantages of acidproof, rapid release and stable.

The invention discloses a catalyst with high safety used for synthesizing 2-picoline and the preparation method, the procedures are: add THF and NaNH2 in sodium salt kettle, drip CPD when the temperature is 0 to 45 DEG C. and keep the reaction for 0.5 to 3 hours to produce CPD sodium; add anhydrous CoCl2 in the synthesis kettle after adding tetrahydrophthalic anhydride furan, stir for 30 to 40 minutes then add the prepared CPD sodium, keep the backflow of the liquid at the temperature of 60 to 70 DEG C. and keep stirring reaction for 1 to 2 hours continuously, the reaction of preparing catalyst is finished; after the backflow ending, recycle solvent and increase the temperature to 65 to 75 DEG C., when the liquid flow volume is reduced, open vacuum pressure distill recycle solvent, stir and add acetonitrile continuously when having no liquid in the kettle, after stirring for 1 hours under the room temperature to remove sodium chloride and get the catalyst in mixture state. The invention has simple reaction process, which prevents the strict requirements and complication of the synthesis technique of organic Co catalyst crystal.

The invention discloses a mini-pill type nicergoline capsule and a preparation method thereof. The mini-pill type nicergoline capsule is a sustained-release preparation and is prepared from a capsule shell and a nicergoline mini-pill accommodated in the capsule shell, wherein the nicergoline mini-pill sequentially comprises an empty pill core, a main drug layer and a pigmented layer from inside to outside; the main drug layer accounts for 15-60 percent of the empty pill core, and the pigmented layer accounts for 0.5-1 percent of the total weight of the empty pill core and the main drug layer. The mini-pill type nicergoline capsule has the advantages of small stimulation to intestines and stomach, high utilization rate, high stability, less toxic or side effects and capability of fully releasing effective components in time.

The invention discloses a pellet type omeprazole enteric capsule and a preparation method thereof. The pellet type omeprazole enteric capsule is a sustained-release preparation, and is composed of a capsule shell and evenly mixed omeprazole pellets received in the capsule shell; each omeprazole pellet is composed of a blank pill core, a main drug layer, an isolation layer and an enteric layer in order from inside to outside, wherein the weight of the main drug layer accounts for 15-60% of that of the blank pill core, the weight of the isolation layer accounts for 10% of the total weight of the blank pill core and the main drug layer, the weight of the enteric layer accounts for 28-32% of the total weight of the blank pill core, the main drug layer and the isolation layer; besides, the enteric layers of 40-60% of omeprazole pellets are further coated with pigment layers; the weight of the pigment layer accounts for 0.5-1% of the total weight of the blank pill core, the main drug layer, the isolation layer and the enteric layer; the diameters of the blank pill cores are 0.8-1.0mm; the granularity of the omeprazole pellets is 14-20 meshes; each capsule contains 15-30mg of omeprazole. The pellet type omeprazole enteric capsule has the advantages of good acid resistance, sufficient active ingredient release without delay, good stability and the like.

The invention relates to the field of hydrogen chloride catalytic oxidation, and discloses a method and device for hydrogen chloride photocatalytic oxidation. According to the invention, a reactor isdivided into a light irradiation area and a non-light area, wherein the light irradiation area can be irradiated by light, and the non-light area cannot be irradiated by light. Gas between the light irradiation area and the non-light area can circulate, so that product gas is effectively prevented from continuous reverse photolysis under an illumination condition, and the yield is improved.

The invention relates to a method for inducing the accumulation of stilbenes resveratrol, polydatin and pterostilbene in grape leaves, grape stems and grape fruits. The method comprises related methods for preparation of a hydrogen peroxide inducer, spraying treatment of in-vivo and in-vitro materials of grapes and impregnation treatment of the in-vitro materials of the grapes. According to the technical scheme, increase of stilbene content of the materials can be effectively, specifically and comprehensively induced, and the method has the characteristics of safety and convenience for large-scale application to township enterprises with rich grape resources, and is easy to operate. The quality of the grapes can be improved, grape planting waste can be comprehensively utilized, and grape trees can resist pathogenic bacteria to a certain extent to reduce loss caused by diseases.

The invention discloses a brown sugar sweet drinking granule and a preparation method thereof. The brown sugar sweet drinking granule is prepared from, by weight, 60-75 parts of brown sugar, 1-5 partsof xylooligosaccharide powder and 5-25 parts of an extract, wherein the weight ratio of the brown sugar to the extract is 5-12:1; the extract is a mixture of extracts from natural plant materials. The brown sugar sweet drinking granule is dissolved rapidly in water, has no precipitate, is good in stability, has high content of effective components, has natural spiciness, fragrance and aroma, remains the original taste and smell of the raw materials, is fine and smooth, and has fine and smooth taste, intense flavor and no tea residues, and is high in nutritional ingredient.

The invention discloses a bio-fertilizer rich in inositol and a preparation method of the bio-fertilizer. The fertilizer comprises the following components in parts by weight: 30-40 parts of a straw fermentation product, 10-20 parts of chicken manure, 20-30 parts of fishpond bottom mud, 30-40 parts of an inositol-containing material, 10-15 parts of potassium nitrate, 5-10 parts of traditional Chinese medicine residues, 5-10 parts of eggplant peel, 3-5 parts of quicklime powder, 3-8 parts of a microelement composition and 2.5-3 parts of a bacillus subtilis microbial agent. The inositol-containing material is applied to preparation of the fertilizer, so that waste of inositol extraction residues and trouble of treating the inositol extraction residues are avoided, and the efficient bio-fertilizer rich in nutrients and beneficial to crop absorption is provided for crops.