35results about How to "Avoid photodamage" patented technology

The invention relates to a fruit jelly capable of relieving asthenopia, comprising 0.1-15wt% of L-arabinose, 0-0.001wt% of vitamin A, 0.0001-0.0003wt% of xanthophylls, 0-0.01wt% of zinc element and 0.1-30wt% of filler and/or flavouring additive, and the balance of water. The invention realizes ice cream fruit jelly capable of relieving asthenopia in the prior art, and conventional substances for producing fruit jelly are adopted, thus solving the technical problems that the effect for reliving asthenopia of the fruit jelly ice cream is limited and commodity value is reduced, thereby being a fruit jelly which can effectively relieve asthenopia and has good taste.

The invention discloses a fluoro phenylindole compound which adopts a structure shown in formula I, application of the fluoro phenylindole compound as a red organic luminescent material, and a preparation method of the fluoro phenylindole compound. The fluoro phenylindole compound is obtained through a reaction between cyclohexanone and 3-(3-(4-fluorophenyl)-1-isopropyl-1H-indole-2-yl) acrolein under an alkaline condition. The preparation method is simple to operate, convenient for synthesis and easy for purification; the obtained fluoro phenylindole compound is stable in structure and can be utilized for fluorescence conversion on a strong red color displayed under 800-nm laser excitation, thereby having potential application values in such fields as luminescent equipment, anti-counterfeit technologies, laser dye and fluorescence sensing; the research field of the fluoro phenylindole compound is expanded.

The present invention relates to a modified surface capable of having bacteriostatic and bactericidal activity when it is light irradiated, thus converting the surface of the substrate into a bacteriostatic and a bactericidal surface as many times as it is desired, and for a long time. According to the invention, the modified surface upon light irradiation avoids the attachment of a microorganism to this surface, inhibits the formation of a biofilm on this surface and destroys an already formed biofilm on this surface. These effects can be achieved as many times as it is desired, and for indefinite time.

The present invention discloses a medicinally and edibly homologous solid beverage capable of improving eyesight of astronauts. The medicinally and edibly homologous solid beverage is composed of thefollowing components in weight percentages: 10%-30% of cassia seeds, 5%-30% of rhizoma polygonati, 5%-25% of blueberries, 5%-25% of Chinese wolfberry fruits, 5%-20% of chrysanthemum, 5%-20% of mulberry leaves, 5%-15% of maltodextrin and 1%-10% of xylitol. The provided medicinally and edibly homologous solid beverage is prepared from the natural raw materials and has functions on protecting eyesight, relieving eye fatigue and preventing light damage. According to a theory of millennium traditional Chinese medicine compatibility in our country, the medicinally and edibly homologous plants with human eyesight-protecting functions are used as the raw materials; and the medicinally and edibly homologous solid beverage is safe, free of side effects, relatively remarkable in effect, good in mouthfeel and very suitable for the particular populations of the astronauts to eat.

The invention discloses a green light response polymer nano-drug carrier and a preparation method thereof. The preparation method is characterized by comprising the following steps of firstly, synthesizing a green light response amphiphilic (hydrophilic and oleophylic) polymer containing donor-acceptor Stenhouse adducts, then, self-assembling the polymer and a drug in a solution to form vesicles, and finally, obtaining the green light response nano-drug carrier entrapped with a hydrophilic/hydrophobic drug. According to the nano-drug carrier prepared by the invention, low-energy green light is used as a response switch, so that the problem of light damage to biological tissues caused by an excitation light source is avoided; and compared with the traditional polymer micelle drug carrier, the polymer vesicle drug carrier prepared by the method has larger drug loading capacity and more drug loading and releasing modes.

Certain embodiments of the invention provide antioxidant-based diacids and polymers comprising glycol groups as described herein, and methods of use thereof. In certain embodiments the polymers described herein are formulated as microspheres or hydrogels. Described herein is the chemical incorporation of antioxidants, e.g., coumaric acid, ferulic acid, and sinapic acid, into a polymer backbone for use, e.g., in applications for localized release and rapid delivery. As provided, the chemical composition of the linker molecules used (of which hold together two bioactives via ester linkages) may be used to vary the hydrophilicity of the polymer. The bioactive release rate may also be altered for a tunable release delivery system, allowing for increased bioactive release compared to other linkers previously utilized.

The invention discloses a nutritional health-care product for adjusting visual performance, and in particular relates to a nutritional health-care product for preventing and treating occurrence and development of myopia and cataract. The nutritional health-care product is prepared by a conventional method from the following raw materials in total weight of 100 grams by weight proportion: 1 to 10g of eyeseryl (ocustilla), 0.005 to 0.2g of lutein, 0.001 to 0.05g of vitamin B, 0.04 to 0.15g of vitamin C, 0.005 to 3g of beta-carotene, and the balance of toothpaste raw materials. In the method, the toothpaste is used as a basic raw material, and the eyeseryle (ocustilla), the lutein, the vitamin B, the vitamin C, the beta-carotene and other visual protective trophic factors are added, so a user is ensured to absorb trace visual protective trophic factors required for visual performance adjustment by means of contacting trace eyeseryl (ocustilla) and various vitamins for a long term and absorbing trace eyeseryl (ocustilla) and various vitamins through buccal mucosa in a daily tooth brushing process. Therefore, the occurrence and development of the myopia and the cataract can be prevented, treated and retarded, and meanwhile, clinical information proves that the nutritional health-care product has an excellent treatment effect on canker sores.

The invention belongs to the technical field of marine organisms, particularly to a keep-alive conveying and seed preservation method of rubber production tropical seaweed eucheuma denticulatum. The eucheuma denticulatum and moisturizing materials are placed into a 17.0 to 23.0 DEG C of storage device together under the dark condition and the 80 plus or minus 20% of relative humidity after water-leaving treatment is performed on the eucheuma denticulatum and accordingly the storage time can be extended and the long time keep-alive conveying of the eucheuma denticulatum can be achieved. The keep-alive conveying and seed preservation method of the eucheuma denticulatum is simple and practicable, the keep-alive period is long, the keep-alive conveying and seed preservation method is suitable for long-distance conveying of seedlings of the eucheuma denticulatum, farmers can harvest the seedlings ahead of time in a typhoon period, the seedlings can be safely stored, and losing of the seedlings can be avoided.

The invention discloses a coaxial axial modulation high-resolution photoacoustic microscopic imaging method and an imaging system, belongs to the field of microscopic imaging, and particularly establishes a set of complete coaxial axial modulation high-resolution photoacoustic microscopic imaging system to avoid the problem of poor axial resolution in an orthogonal axial structure light modulation photoacoustic signal scheme. Meanwhile, the invention further provides a set of axial modulation photoacoustic signal method, the axial structure light modulation principle is combined with ultrasonic detection, the limitation that the axial resolution of the PAM system is limited by the detection bandwidth of an ultrasonic probe is broken through, the axial high-resolution PAM system imaging result is obtained, and meanwhile, the defect that light damage exists when the axial resolution of an existing PAM system is improved is overcome. In the method for axially modulating the photoacoustic signal, a coaxial axial structured light implementation scheme is provided on the basis of a double circular seam method, the three-dimensional light field distribution of circular seam masks with different initial phase differences near the rear focal plane of the lens can be easily obtained by changing an input light field, and the calculation is simple.

The invention discloses bioactive antioxidant polysalicylic acid hydrogel as well as a preparation method and theapplication thereof. The method comprises the following steps: (1) preparing a PSa polymer; (2) preparing an FPSa polymer; and (3) preparing FPSa hydrogel. and 4) characterizing the physical and chemical properties of the FPSa hydrogel and performing biological application. The FPSa polymer has good biocompatibility and degradability, the synthesis method of polymerization reaction and catalytic reaction is environment-friendly, the operation is simple, and the raw material cost is low. The FPSa hydrogel has good ultraviolet shielding performance and can prevent ultraviolet rays from damaging the skin. The result shows that the FPSa hydrogel has important potential application value in the aspect of preventing skin light damage, and a strategy for designing multifunctional single-part bioactive hydrogel is provided for biomedical application.

The invention relates to a composition for protecting eyes as well as a health-protection food and a preparation method thereof. The composition for protecting eyes is prepared from the following raw material components in parts by weight: 2-8 parts of haematococcus pluvialis astaxanthin microcapsule powder, 20-40 parts of lutein ester microcapsule powder and 8-15 parts of zeaxanthin microcapsule powder. The composition for protecting eyes contains rich eye protection components, can effectively relieve eyestrain, improve eye microcirculation and prevent eyes from photic injury and inflammation injury, and can effectively prevent various eye problems such as visual impairment, cataract, glaucoma and macular degeneration. The composition is especially suitable for people with uncomfortable symptoms such as eye soreness, ophthalmodynia, eye dryness and impaired vision caused by eye overuse due to various reasons, as well as eye postoperative nursing.

The invention discloses a novel binuclear ion-type phosphorescence iridium complex, a preparation method thereof, and an application of the complex in bio-imaging. The chemical structure of the complex can be represented by a formula I: [Ir(C^N)2(tpphz)Ir(C^N)2]+Y-2, wherein tpphz represents tetrapyridinophenazine, C^N ligand is phenylpyridine (ppy), 2,4-difluorophenylpyridine (dfppy), thiophene quinoline (tpq) and 2-(4-dimesitylborylphenyl)quinoline (bpq), and the counter ion Y is PF6<-> and Cl<->. The iridium complex has the advantages of long phosphorescence lifetime , large Stokes shift, good optical stability, low toxicity, and good biocompatibility, and is an excellent probe for cell imaging.

The invention relates to the technical field of high polymer materials, biological medicines and nano materials, in particular to a preparation method and application of a novel fluorescent nano material with photodynamic therapy and sterilization functions. The preparation method comprises the following steps: dissolving an aniline compound and amino acid with deionized water, adding concentrated sulfuric acid after dissolving, and uniformly stirring and mixing; and transferring the uniformly mixed solution to a polytetrafluoroethylene reaction kettle, and carrying out hydrothermal reaction to obtain the novel macromolecular fluorescent nano material with the spiral structure. The fluorescent nano material can immediately generate hydroxyl free radicals, singlet oxygen and superoxide anion radical free radicals after being illuminated by ultraviolet light, visible light, laser and the like, and has extremely strong oxidation characteristics; when free radicals are generated, body color and fluorescence are changed, the generation of the free radicals can be judged according to the body color and fluorescence characteristics, and according to the characteristics of the photosensitizer, the photosensitizer can be applied to the fields of photodynamic therapy, photodynamic bacteriostasis and the like.