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93 results about "Ultraviolet b" patented technology

Ultraviolet A (UVA) has a longer wavelength, and is associated with skin aging. Ultraviolet B (UVB) has a shorter wavelength and is associated with skin burning. While UVA and UVB rays differ in how they affect the skin, they both do harm. Unprotected exposure to UVA and UVB damages the DNA in skin cells,...

Light source special for livestock and poultry building

The invention relates to a light source special for a livestock and poultry building. A main body of the light source special for the livestock and poultry building is a luminous tube. The light source is characterized in that: an outer shell of a tube shell is made of far ultraviolet quartz glass; the tube shell is vacuumized and then is filled with inert gases and mercury drops; the inner wall of the tube shell is coated with composite fluorescent powder; a 2mm wide slot in a length direction of the tube shell is not coated with the fluorescent powder to form a transparent open slot; and ultraviolet light with the wavelengths of 185nm and 253.7nm are generated in the collision process of low-pressure mercury vapor and high-speed electrons, wherein the ultraviolet light with the wavelength of 185nm changes oxygen (O2) in air into ozone (O3) by passing through the open slot; part of the ultraviolet light with the wavelength of 253.7nm directly plays a role in sterilizing by passing through the open slot; and most of the ultraviolet light with the wavelength of 253.7nm is used for exciting the fluorescent powder to generate health-care ultraviolet light with the wavelengths of 280 to 320nm. The light source special for the livestock and poultry building has the advantages of not only solving the problem of purification and disinfection of a culture environment but also solving the problem of lack of health-care rays radiation during livestock and poultry breeding, such as ultraviolet B (UVB with the wavelengths of 280 to 320nm) in sunlight, returning a nature-like environment to animals in the livestock and poultry building, and contributing to the healthy growth of the animals in the livestock and poultry building.
Owner:南通格林福得禽业科技有限公司

Device and method for coloring red Chinese sand pears after harvesting

InactiveCN102150819AFull colorStable and uniform coloringFood preparationLuminous intensityBiology
The invention relates to a device and a method for coloring red Chinese sand pears after harvesting, and the method comprises the following steps: standing the Chinese sand pears which achieve the physiological maturity stage and are not colored under an environment with UV-B (ultraviolet-B) luminous intensity of 1-2 mu mol.m-2.s-1, luminous intensity of white light of 3-4 mu mol.m-2.s-1, average temperature of 25-29 DEG C, and average relative humidity of 55-75% for 5-10 days. The device comprises a closed storage room for placing the Chinese sand pears, wherein an UV-B light source and a white light source are mounted at the top of the storage room, a temperature control device and a humidification device are mounted on the side wall, and a ventilation opening is arranged at the bottom. After the Chinese sand pears are harvested, the Chinese sand pears are placed in the environment with the controllable temperature and the humidity, the fruits with relatively sufficient, stable and uniform coloring can be obtained by performing continuous irradiation under the artificial light source for a period of time, and the device and the method are specially used for promoting the coloring of the red Chinese sand pears, and can promote the synthesis of anthocyanin in the red Chinese sand pears in a quicker manner and improve the appearance quality.
Owner:ZHEJIANG UNIV

Protection effect of cyanidin-3-glucoside for UVB (ultraviolet B)-induced HaCaT cell injury

The invention discloses a protection effect of cyanidin-3-glucoside (C3G) for UVB (ultraviolet B)-induced cell injury. The protection effect particularly includes that generation of ROS (reactive oxygen species) of HaCaT cells due to UVB can be reduced by the C3G, accordingly, antioxidant effects can be realized, DNA (deoxyribonucleic acid) can be protected against injury, the survival rate of the HaCaT cells can be increased after the UVB irradiates on the HaCaT cells, and apoptosis reducing effects and the like can be realized. The protection effect has the advantages that the oxidation injury of the selected representative HaCaT cells which are cultivated in vitro is induced by means of UVB irradiation, light injury models of epidermal cells due to ultraviolet rays are imitated, then the C3G is used as a light injury protector, effects and relevant channels of the C3G for relieving UVB injury of the HaCaT cells are evaluated, the protection effect, action mechanisms and the safety of the C3G for light injury of skins are investigated, and accordingly theoretical foundation is laid for clinically effectively preventing and treating light injury of the skins and studying ultraviolet radiation injury protection action mechanisms of natural plant antioxidants.
Owner:JINAN UNIVERSITY

Application and use method of ligustilide in preparing skin-care product for preventing skin photoaging

The invention discloses an application and use method of ligustilide in preparing a skin-care product for preventing skin photoaging. When the skin-care product is prepared, the ligustilide is taken as an active component and prepared into a ligustilide nano-liposome or nano-emulsion with the grain diameter less than 200 nanometers, and the mass percent concentration of the ligustilide nano-liposome or the nano-emulsion is 0.01%-10%. According to the application and use method disclosed by the invention, the influence of the ligustilide on the expression of a UVB (Ultraviolet B) induced skin keratinocyte photoaging key gene is inspected through a UVB induced skin keratinocyte model test, and a test result indicates that the skin-care product can effectively inhibit the degradation of collagen and the inflammatory reaction of cells and achieve the effect of preventing the skin photoaging; the ligustilide widely exists in angelica root volatile oil or cnidium officinale root volatile oil, and the ligustilide is directly added to the skin-care product for preventing the skin photoaging, or the angelica oil or cnidium officinale oil which contains the ligustilide is indirectly added to the skin-care product for preventing the skin photoaging.
Owner:KARLIE COSMETICS MFG CO LTD +1

Comprehensive-effect sunscreen lotion containing oceanic biological active substances

The invention discloses a comprehensive-effect sunscreen lotion containing oceanic biological active substances. The lotion contains seashells active peptides, oceanic collagen peptides and algal polysaccharides as main active ingredients, and also contains allantoin, magnesium ascorbyl phosphate, vitamin E acetate, ultraviolet A absorbent and ultraviolet B absorbent. The comprehensive-effect sunscreen lotion disclosed by the invention solves the problem that the sunscreen cosmetics in the prior art have irritation and phototoxicity to skin and poor air permeability, make skin oily, and easily block sweat pores; and the sunscreen lotion organically combines oceanic biological active substances and a sunscreen agent, so as to greatly improve the sunscreen capacity and safety of the sunscreen lotion while reducing the use amount of the sunscreen agent. The lotion has mild and comprehensive effects, not only can effectively block the damage of ultraviolet ray to skin and relieve skin inflammations due to sunscald, but also can keep skin moist, provide nutrients, promote skin regeneration, repair damaged skin and comprehensively improve the protection capability of skin. Meanwhile, the lotion has w / o (water-in-oil) type and o / w (oil-in-water) type, and is suitable for people of various skin types.
Owner:FOSHAN ANAN BEAUTY & HEALTH PRODS

Oil seepage daytime detection method for power equipment

The invention relates to an oil seepage daytime detection method for power equipment. An ultraviolet light source of ultraviolet light is given, and a light path conversion device is provided, so thata light source output path can be switched between a light path A and a light path B; the light source output path is switched to the light path A, the ultraviolet light source passes through a band-pass light filter with the transmission wavelength ranging from 335nm to 345nm, and then the light intensity is adjusted to the brightness M through a light intensity adjusting light filter A; ultraviolet rays emitted by the light path A irradiate a to-be-detected object, a light filter is additionally arranged in the front of a lens of an ultraviolet camera to filter visible light with the wavelength larger than 390nm, and an ultraviolet image A of the to-be-detected object is shot; likewise, the light source output path is switched to the light path B to obtain an ultraviolet image B; and agrayscale image of the ultraviolet image A is subtracted from a grayscale image of the ultraviolet image B, histogram equalization is carried out to increase a contrast ratio, an image D is obtained,and whether the oil seepage of the power equipment exists or not can be judged through the image D. According to the method, the oil seepage detection can be rapidly and accurately carried out in daytime.
Owner:STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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