18 results about "Photo damage" patented technology

The invention relates to the technical field of facility agriculture and environment control, and discloses an intelligent illumination control system for greenhouse plant growth. In order to solve the problems that an existing light supplementing strategy lacks physiological feedback, light damage is easily caused, and shutdown is caused by sensor faults, the system comprises a multi-mode sensing assembly, a central processing unit and a dynamic spectrum execution assembly. The system collects crop non-photochemical quenching coefficients (NPQ) and environmental factors in real time, and dynamically calculates light saturation points by using a multi-factor coupling model; when the NPQ exceeds a threshold value, the spectrum ratio is automatically adjusted to inhibit light stress; three-dimensional canopy scanning is combined to realize gridding differentiation light supplement; when the sensor fails, virtual parameters are reconstructed based on the temperature trend to maintain fault-tolerant operation; in addition, the system estimates stomatal conductance according to air humidity and matrix conductivity, and dynamically corrects target light intensity to avoid aggravation of water deficit; accurate light supply according to needs is achieved, the photosynthetic efficiency and the system reliability are remarkably improved, and the system is suitable for plant factories and multi-span greenhouses.

The invention relates to the technical field of cosmetics, in particular to a skin repairing composition for whitening and resisting light damage and a preparation method. The composition comprises polypeptides such as acetyl tetrapeptide-11, glutathione, decarboxylated carnosine, tripeptide-1 and the like, the effects of whitening and brightening the skin, resisting light aging and repairing the skin are achieved through multi-way, multi-azimuth and multi-target combined action and mutual cooperation, and the effects of improving the skin quality and repairing the skin can be better achieved. The composition disclosed by the invention can be widely applied to various cosmetics.

The invention discloses a haematococcus culture method based on a flexible LED array and a photobioreactor, and relates to the field of bioengineering, and the method comprises the following steps: preparing an SE culture medium according to the growth requirements of haematococcus; pumping the SE culture medium into the sterilized and cooled photobioreactor to a working volume through a sterile pipeline; the photobioreactor is started, sterile air with set flow is introduced, and mild stirring is carried out. According to the invention, the flexible LED array is adopted to surround the transparent reaction inner cavity, so that three-dimensional light distribution is realized, illumination dead angles are eliminated, and the light receiving uniformity of cells is greatly improved; an OD680-target light intensity linear curve is fitted through a pre-experiment, a reactor controller and an LED driving module are combined, light intensity automatic linear adjustment is achieved, light damage is avoided, and the photosynthetic efficiency is greatly improved compared with a traditional rigid LED. The photobioreactor realizes integrated control of illumination and ventilation, reduces manual operation, reduces pollution risk, is stable in product content among batches, and meets the requirements of industrial large-scale production.

The invention belongs to the technical field of photosensitive materials, and particularly relates to an aggregation-induced emission type photosensitizer as well as a preparation method and application thereof. The aggregation-induced emission type photosensitizer provided by the invention has a structure as shown in any one of formulas I-III. The aggregation-induced emission (AIE) photosensitizer has large Stokes shift, can emit light in a near infrared region I (NIR-I), and is beneficial to penetrating deep biological tissues and reducing light damage to the biological tissues; meanwhile, the AIE type photosensitizer has relatively strong I type active oxygen generation capability, and is expected to be used as a photosensitizer for photodynamic therapy. Formula I, Formula II and Formula III.

This invention discloses a multimodal photothermal imaging method and system based on quantum correlation enhancement, belonging to the field of quantum optical imaging technology. The system includes a data acquisition and control system, a quantum light source fabrication module, a tunable pump light module, and a photothermal microscopy imaging module. This invention uses a quantum-correlated probe beam and a conjugate beam as the probe light for the photothermal effect, and a modulated light source with a wavelength tunable within the electromagnetic spectrum as the pump beam for photothermal excitation. By balancing the photothermal modulation in the zero-beat detection intensity difference, it overcomes the shot noise limit of traditional photothermal microscopy, achieving detection sensitivity exceeding the standard quantum limit, significantly reducing optical damage, and improving imaging speed. This invention has a wide spectral applicability and strong compatibility, and can be immediately integrated into various photothermal microscopy platforms for label-free imaging of biological samples and high-precision characterization of nanomaterials.

The invention discloses a method for digitally evaluating and analyzing the light damage resistance of a single-molecule enzyme, which comprises the following steps of: immersing a reagent tube containing a pre-prepared enzyme solution in an ice-water mixture to form a heat clamping state, and starting a laser irradiation program to carry out light stress treatment; mixing the enzyme liquid subjected to light stress treatment with a DNA template and a primer to construct an enzyme-template-primer ternary compound, and diluting to a single molecule level; loading the ternary complex into a micropore array chip, adding a reaction substrate and a fluorescent molecular beacon for rolling circle amplification, and continuously collecting fluorescent signals to obtain a time-resolved fluorescent image sequence; constructing a U-Net network with a cross attention sub-layer, correcting the mask of the current frame, and updating the coordinates of the center of mass; after the fluorescence image sequence is processed, a correlation curve of time and fluorescence intensity of each micropore is generated, and a catalytic rate mean value and a rate distribution variance are calculated. According to the invention, the technical defects of low accuracy of analysis results caused by photo-thermal interference and signal drift are overcome.

The invention provides an application of procyanidine B2 or a red rice extract in treatment of skin light injury. The proanthocyanidin B2 or the red rice extract containing the proanthocyanidin B2 is combined with a key subunit NDUFA7 in NADH: ubiquinone oxidoreductase (compound I) in mitochondria to stabilize the positioning of the proanthocyanidin B2 or the red rice extract containing the proanthocyanidin B2 in the compound I and improve the activity of NADH dehydrogenase, so that the stable state of the mitochondria is maintained, the generation of ROS is reduced, the PERK-Nrf2 axis of the targeted mitochondria activates antioxidant response, and the mitochondrial activity of the mitochondria is improved. On the other hand, the excessive stress of NF-kappa B and p53-POMC axes is reduced, and the effect of repairing skin light damage is achieved by synergistically promoting cell survival and steady state maintenance through multiple channels.

The invention discloses application of plum callus extract in cosmetics for maintaining pigment stability and photoprotection as well as a related product and a preparation method thereof, and belongs to the technical field of cosmetics. The invention aims to solve the technical problems that the shelf life and the appearance of a product are seriously influenced by the conditions of color fading, color change or smell change after long-time illumination of the product containing the water-soluble pigment, and the effect of improving the light stability of the water-soluble pigment by the existing plant extract is not ideal. According to the key points of the technical scheme, the plum callus extract is added into the product, so that the tolerance of the product containing the water-soluble pigment to illumination is improved, and the influence of illumination on the shelf life and appearance of the product is reduced; a high-transparency packing material can be used for the product, so that the risk of illumination does not need to be worried; moreover, it is accidentally found that the plum callus extract can effectively relieve light damage of UVA and UVB to cells, so that the light protection effect of the product can be improved, and skin with light damage can be repaired.

The invention discloses a noninvasive microscopic imaging system for dynamically monitoring embryonic development, and relates to the technical field of biomedical imaging. The system comprises an imaging module, a dynamic embryo monitoring module and an intelligent development analysis module, the imaging module adopts a near-infrared pulse and low-power visible light dual-light-source system, supports phase difference, dark field and fluorescence multi-mode imaging, and remarkably reduces phototoxicity; the embryo dynamic monitoring module maintains the stability of an embryo culture environment in real time through an integrated culture cabin and a high-precision environment control system; the development intelligent analysis module realizes automatic image segmentation and feature extraction based on an improved U-Net network, generates a control instruction in real time through embryo respiration feedback, contour tracking and an automatic focusing algorithm, and realizes undisturbed, continuous and intelligent monitoring of the development process. The method solves the problems of large light damage, strong environmental disturbance, dependence on manual interpretation and the like in the prior art, and is suitable for the fields of assisted reproduction, developmental biology, drug screening and the like.

The present application relates to a kind of compositions for resisting and repairing photo-damage and its application in skin care, belong to the field of cosmetics.The present application first proposes to solve the problem of photo-damage from multiple dimensions, the composition described in the present application includes lactobacillus / grape juice extract, tetrahydro methyl pyrimidine carboxylic acid, glucosyl hesperidin, adenosine, helianthus spadiceus callus culture filtrate, each active ingredient complements each other, synergistic effect, so that it can resist photo-damage, improve skin repair ability, improve the problem of pigmentation caused by photo-damage, also can strengthen skin barrier, effectively resist external invasion, provide a mild solution for people with sensitive skin and troubled by photo-damage.

This invention provides a recombinant collagen repair dressing for repairing photodamage to the skin, its preparation method, and its application. The dressing comprises the following raw materials: recombinant collagen, a complex moisturizer, a gel matrix, an antioxidant, an osmotic pressure regulator, an anti-photoaging active peptide, a metalloproteinase inhibitor, and water for injection. In preparation, drug-loaded liposomes are first prepared, then mixed with the gel matrix and other active ingredients, and obtained through aseptic processing. The dressing of this invention significantly improves the skin permeability, stability, and photodamage repair efficacy of the active ingredients through liposome-targeted delivery, synergistic repair with multiple collagen types, and multi-pathway action of anti-oxidation and inhibition of metalloproteinases. It exhibits excellent effects in repairing UV damage, improving photoaging, and repairing the skin barrier after cosmetic procedures.

The application belongs to the technical field of medicines, and particularly relates to application of Compound-8 in preparation of products for relieving or treating blue light damage induced retinal degeneration. It is found for the first time that Compound-8 has a protective effect on blue light damage induced retinal rod cells and cone cells, can increase the length, density and disc thickness of the cilia of the cone cells and the rod cells, can increase the thickness of the outer nuclear layer of the retina, significantly improves the photoreceptor cell damage caused by blue light exposure, can relieve or treat the retinal degeneration caused by blue light damage, and provides a new thought and means for the treatment of blue light damage induced retinal degeneration.

The application discloses application of L- kynurenine in preparation of a medicine for preventing and / or treating ultraviolet light induced skin photo-damage. The application proves that L- kynurenine has a significant anti-photo-damage effect by a UVA irradiation HaCaT cell model, can enhance mitochondrial function and promote mitochondrial biogenesis, thereby improving the antioxidant capacity of cells and reducing inflammatory reactions. The application also verifies that a hydrogel containing L- kynurenine can effectively repair mouse back skin damage caused by ultraviolet light through a UVA combined with UVB irradiation back depilation mouse model, improve the water content and antioxidant capacity of the skin, and reduce inflammatory reactions, edema, roughness, erythema or eschar and other phenomena. Therefore, the application provides a reference direction for development, utilization and popularization of L- kynurenine for preparing a medicine or a medical cosmetic product for repairing skin photo-damage.

The invention belongs to the field of daily chemicals, and particularly relates to an anti-light-damage hair care composition containing basil leaf extract and a preparation method and application of the anti-light-damage hair care composition containing the basil leaf extract, and the anti-light-damage hair care composition containing the basil leaf extract comprises the following components in percentage by weight: 0.2-5.0% of the basil leaf extract; 1.0 to 5.0 percent of a cationic surface active agent; 6.0 to 12.0 percent of a thickening agent; 0.1 to 10.0 percent of a hair conditioner; 0.1 to 5.0 percent of a sun-screening agent; 0.25 to 1.0 percent of preservative; 0.01%-0.5% of a pH regulator; and the balance deionized water. The basil leaf extract is compounded with the sun-screening agent, especially the polysiloxane 15, so that the effect of preventing light damage can be achieved, and the hair health can be effectively protected.

This invention belongs to the field of cosmetic technology, specifically relating to a composition for improving erythema and photodamage in sensitive skin and its application. The invention provides a composition for improving erythema and photodamage in sensitive skin, which is formulated from 4-tert-butylcyclohexanol, astragalus polysaccharide, ascorbic acid peptides, and supramolecularly refined mullein extract. Through multi-target and multi-pathway integration, it achieves a synergistic effect of "instant soothing, long-lasting moisturizing, barrier repair, and anti-photodamage."

This invention provides a method for extending the lifespan of titania-containing resins and titania nanoparticle-containing resins with a high refractive index in sunlight. [Solution] Optical devices coated with a high refractive index (RI) titania-containing resin are hermetically sealed to protect them from degradation by short-wavelength visible light (less than 425 nm), including sunlight, and ultraviolet light in the 300-400 nm range. The method includes placing the optical device in an assembly that can be hermetically sealed. The method further includes introducing an inert atmosphere or vacuum and hermetically sealing the assembly so that oxygen and water are excluded. The manufactured hermetically sealed optical device obtains improved resistance to photochemical degradation due to exposure to sunlight and more common light having wavelengths in the 300-425 nm range. The method of this disclosure significantly improves the operating life of optical devices using high refractive index titania-containing resin exposed to sunlight.

The invention discloses application of a fructus galangae extract in preparation of a product for preventing or repairing skin light injury. The effect of preventing or repairing the skin light injury at least comprises at least one of improvement of the activity of skin barrier related protein and up-regulation of the content of the skin barrier related protein. In addition, the product also has an instant soothing effect on light-damaged skin. The effect of preventing or repairing the skin light injury and the effect of instantly relieving the light injury skin are remarkably improved by purposefully selecting an extracting agent of the fructus galangae extract.

The invention discloses a fluorescent pathological section scanning system, method and device, and the system comprises a scanning control module which is used for enabling an imaging view field to scan a whole pathological section, synchronously triggering the fluorescence excitation light source to flash and the imaging module to photograph, and setting the flash duration of the excitation light source and the exposure duration of the imaging module based on the fluorescence lifetime of the used fluorescent dye; the flash duration, the exposure duration and the fluorescence lifetime of the fluorescence sample to be detected meet the following formula. According to the application, short-time pulse illumination light is used for exciting fluorescence, meanwhile, long-time exposure is used for collecting the fluorescence, fluorescence afterglow radiation energy is fully collected, and a high-brightness fluorescence microscopic image is obtained under low-energy excitation. According to the application, the to-be-detected fluorescent sample can be prevented from being damaged by light, and the fluorescence quenching or bleaching of the pathological section can be inhibited.