40 results about "UVA Radiation" patented technology

Equi-dosed time-fractionated pulsed UVA is employed to irradiate a class of riboflavin / collagen mixture in the presence of copious oxygen to cause rapid crosslinking causing gelation of the riboflavin / collagen mixture in situ and to effect adhesion to underlying structure specifically ocular tissue such as scleral and corneal tissue. Irradiation according to an embodiment of the invention results in depletion of dissolved oxygen at a rate inversely related to irradiance and more particularly depletion of dissolved oxygen occurs rapidly during the process of generation / cross-linking of reactive oxygen species (ROS), specifically singlet oxygen, such that the pulsed fractionation of UVA radiation exposure increases cross-linking efficiency by allowing the re-diffusion of oxygen during pauses in exposure.

There is disclosed a composition for converting electromagnetic energy to ultraviolet C (UVC) radiation or radiation of a shorter wavelength, the composition comprising at least one phosphor capable of converting an initial electromagnetic energy (A) to an electromagnetic energy (B) comprising UVC radiation or radiation of a shorter wavelength, and an organic or inorganic media containing said phosphor. There is also a method of sterilizing an article by exposing it to UVC radiation or radiation of a shorter wavelength for a time sufficient to deactivate or kill at least one microorganism and / or for a time sufficient to inhibit abnormal cell growth within the body, when said composition is in an implantable medical device. A method of coating an article with such compositions is also disclosed.

A system for accurately delivering bilateral simultaneous equi-dosed time-fractionated pulsed UVA to irradiate a class of riboflavin / collagen mixture in the presence of oxygen for treatment of ocular tissue such as scleral and corneal tissue. The system employs ocular trial frames for mounting on the face that are fitted with 1) a nozzle for introducing Riboflavin in solution to collagen on the surface of the ocular tissue, 2) a port for introducing oxygen-rich gas to the ocular tissue, and 3) a pair of optical collimator inserts mounted in the lens holders, wherein the collimator inserts have a mask in the optical path at an aperture on focal point to control the pattern of UVA radiation at the ocular target, the collimator inserts further having optical input ports coupled to a controlled source of UVA radiation that is operative in accordance with the related inventive method.

A method and material for augmenting the shape and thickness of the cornea in situ includes applying a clear liquid collagen mixed with a customized crosslinker onto the augmentation surface or in a cavity (with or without a mold) and exposing the mixture to UVA radiation in vivo. Application of UVA at varying dosages demonstrate progressive optically clear gelation and biomechanical adherence properties, and in vitro optical properties (RI), mechanical suture strength and rheometric parameters are comparable to native corneal stromal tissue. Photochemical corneal collagen augmentation according to the invention makes it suitable to reconstruct and strengthen diseased and damaged eyes, ulcerated corneas, as well as provide a substrate for refractive onlay / inlay procedures and lamellar transplantation.

A UV radiation (UVR) response indicator comprises a first UVB and / or UVA radiation sensitive material which has been modified so as to display an altered characteristic in a delayed manner in response to UVB and / or UVA radiation exposure. The UV indicator is capable of displaying exposure to increased UV radiation over a period of time. The present invention also relates to a method of displaying a relative amount of exposure to UVR by a UV indicator over a period of time. The invention is particularly useful in detecting the level of exposure to sunlight or sunbed radiation.

The invention relates to a partition test method for the ultraviolet light aging intensity of asphalt, which comprises the following concrete steps of: determining to select two different types of ultraviolet (UV) light sources; according to the different ultraviolet light sources, determining the intensity of ultraviolet light by using a UV irradiation meter or UV energy meter, and respectively carrying out space distribution determination of UV light irradiation intensity; according to test required outdoor ultraviolet light irradiation requirements, converting the total effective time of outdoor ultraviolet light irradiation into the total effective time of indoor ultraviolet light irradiation; according to different ultraviolet light source types and the space distribution situation of determined ultraviolet light irradiation intensity, carrying out partition design on an asphalt aging disk; considering asphalt thermal-ageing test requirements in current test specifications and the design of the partition aging disk, putting forward an asphalt sample dosage preparation method for light aging tests; and after carrying out light aging indoor simulation test according to the steps, carrying out macro and micro performance tests on asphalt, and carrying out comprehensive analysis on the uvioresistant light aging performance of ultraviolet through integrating the test factors such as experimental temperature, ultraviolet light irradiation intensity, ultraviolet light irradiation time, and the like. The test method is reasonable in design, specific and detailed, simple and convenient in test operations.

The present invention is directed to mobile radiation systems and methods of use that comprise a mobile UVA irradiator including a power supply, a UVA lamp, a control and system indicator unit; a UV radiation blocker nest having an adaptor opening for receiving a hand-held irradiator when said irradiator is in a seated position in said nest; and a mobile carrier comprising a first compartment for housing said power supply, hand-held irradiator, said irradiator nest, wheels and said control unit. The nest may be configured to conform to the hand-held irradiator to block irradiation from the hand-held irradiator when it is energized and in its seated position. The mobile radiation device produced UVA radiation having peak radiation wavelength in a range of from 250 nm to 450 nm and can have a peak irradiation power in a range of from 0.5 W / cm2 to 10 W / cm2.

The present invention provides a method and apparatus for measuring the effectiveness of a sunscreen composition or other skin preparation in reducing the exposure of human skin to UVA radiation, wherein differential electron spin resonance spectroscopy is used to quantify the extent of UVA-induced ascorbate or other measurable radical production in the shielded skin, in comparison with reference, preferably unshielded, skin.

UVB radiation of about 300-310 nm wavelength and UVA radiation of about 380-390 nm wavelength, each of which exists in solar light, induces MMPs (matrix metalloproteinases) in human skin that degrade the collagen of the dermal matrix. This degradation contributes to photoaging of human skin, which can be prevented by blocking these wavelengths of solar radiation. In contrast, diseases that result in the overproduction of collagen can be treated by exposing the affected with to radiation having wavelengths in those regions, for these wavelengths not only induce MMPs but also inhibit collagen biosynthesis. For lighter skinned people so affected, the UVA wavelengths are preferred because of the reduced amount of erythema, whereas dark skinned people can be treated with the UVB radiation because they generally do not suffer from erythema.

Provided is a sun protection composition including a UV absorber and a plurality of porous titanium dioxide microspheres. The UV absorber absorbs light of at least one of UVA radiation and UVB radiation. The particle size of the porous titanium dioxide microspheres is 100 nm to 300 nm, and the porous titanium dioxide microspheres can scatter light in a wavelength range between 200 nm and 400 nm. A cosmetic and a fabric containing the sun protection composition can also scatter light in a wavelength range between 200 nm and 400 nm, such that the UV protection capability of the cosmetic and the fabric is enhanced.

The invention discloses an application of a white peony root extract in the preparation of health food or cosmetic with anti-radiation and anti-aging effects. The white peony root extract has an anti-UVA radiation effect and can reduce cellular damage caused by UV radiation. meanwhile, the white peony root extract has an obvious effect of inhibiting macrophage inflammatory factor expression and can play a role in anti-inflammatory and anti-aging effects. According to the invention, it is also expounded that the white peony root extract has anti-UV radiation and anti-aging effects at the cell and molecular level. In addition, the invention also discloses an optimized preparation method of the above white peony root extract which has anti-radiation and anti-aging effects.

The present disclosure is directed to a process for protecting wood components of the interior of an automotive vehicle from UVA radiation by coating the top surface of a stained wood substrate with a low gloss polyurethane-containing topcoat having a UV absorber and HALS component incorporated therein. The wood component can have a 60 degree surface gloss rating no greater than about 30 gloss units measured according to ASTM D523-08 test conditions. Methods of producing the vehicle interior component are also disclosed.

A seating assembly for a vehicle comprising: a seat; a seatback including an occupant side configured to contact and support an occupant of the seating assembly, a rear side that faces in the generally opposite direction as the occupant side, and a top portion; seatbelt webbing, the seatbelt webbing extending along the rear side of the seatback; a plurality of emitters of UVC radiation; and an emitter support structure attached to the seatback that supports the plurality of emitters of UVC radiation such that the plurality of emitters of UVC radiation emit UVC radiation onto the seatbelt webbing extending along the rear side of the seatback.

The present invention relates to a photoprotective composition for local use containing an association of baicalin or an extract containing same with at least one system filtering UVA radiation. The invention particularly relates to the field of cosmetics and / or beauty products. The present invention also relates to the cosmetic, non-therapeutic, use of baicalin, or an extract containing same, in association with at least one system filtering UVA radiation comprising at least one bis-resorcinyl triazine for protecting the skin and / or lips and / or hair against solar radiation.

UVB radiation of about 300-310 nm wavelength and UVA radiation of about 380-390 nm wavelength, each of which exists in solar light, induces MMPs (matrix metalloproteinases) in human skin that degrade the collagen of the dermal matrix. This degradation contributes to photoaging of human skin, which can be prevented by blocking these wavelengths of solar radiation. In contrast, diseases that result in the overproduction of collagen can be treated by exposing the affected with to radiation having wavelengths in those regions, for these wavelengths not only induce MMPs but also inhibit collagen biosynthesis. For lighter skinned people so affected, the UVA wavelengths are preferred because of the reduced amount of erythema, whereas dark skinned people can be treated with the UVB radiation because they generally do not suffer from erythema.

The present invention provides a device for generating ultraviolet (UV) radiation whose wavelength is optimally tuned into the range of 240 to 290 nm, with peak wavelength in the range of 260 to 270 nm, which attains a Peak Germicidal Disinfection Effective Index of nearly 100%, superior to conventional UV lights and lamps. This device comprises a light-emitting diode (LED) matrix, a fan, an LED driver, a base and a motion sensor with programmable sensitivity and time delay. It may further comprise components for thermal protection and active air circulation. When operating, the device emits visible UVA radiation and blue light. With special considerations for user safety, the device effectively protects users from exposure to UV hazards and is safe to use. With the built-in thermal protection, this device may be used with either open or enclosed fixtures.

The invention discloses a compound extract of rhizoma polygonati and Chinese wolfberry fruits, as well as a preparation method and application thereof. The compound extract is prepared from rhizoma polygonati and Chinese wolfberry fruit extract, wherein the weight ratio of rhizoma polygonati to Chinese wolfberry fruit raw materials is 1:5-5:1, and the crude herbal concentration of the extract is 0.1mg / mL-5mg / mL. The compound extract can be used for enhancing expression of peroxire-doxin in cells and / or ROS content in fibroblasts after UVA radiation and increasing the mitochondria activity of epidermal keratinocytes and / or the content of adenosine triphosphate in the epidermal keratinocytes. The compound extract is added into a skin externally applied preparation as a functional additive for skin care.

The invention provides a UVC ultraviolet radiation sterilization effect detection method, and relates to the technical field of ultraviolet sterilization, and the UVC ultraviolet radiation sterilization effect detection method comprises the following steps: 1, calculating the ultraviolet radiation dose radiated to a sterilization surface in real time; 2, comparing the radiation dosage with a database recording the relation between the sterilization rate and the radiation dosage in real time, and obtaining a real-time sterilization rate; and step 3, displaying the sterilization rate in real time. The invention further provides a UVC ultraviolet radiation sterilization effect detection device, the UVC ultraviolet radiation sterilization effect detection method and the UVC ultraviolet radiation sterilization effect detection device can detect the sterilization rate of the sterilization lamp on the sterilization surface in real time, and the sterilization rate is displayed in real time, so that a user is guided to accurately use the sterilization lamp, and the user experience is improved. Therefore, a user can fully sterilize an object to be sterilized by using the UVLED sterilizing lamp.

A method of using ultraviolet (UV) radiation to treat an infection in the respiratory system and far infrared radiation (FIR) to treat inflammation. The method uses a light probe inserted into the airway of a patient to apply UV radiation and FIR to a target site in the upper respiratory tract. The UV radiation applied may be broad-spectrum UV radiation or UVC radiation in the 222 nm range. FIR applied may be in the 3-10 μm range. The UV radiation kills any organisms, including COVID-19 and FIR reduces inflammation resulting from infection and subsequent UV treatment. The treatment may be applied to intubated or spontaneously breathing patients and via the oral or nasal passages.

A discharge lamp (1) having a discharge vessel (2) which surrounds a discharge medium which emits electromagnetic radiation in the VUV region when the lamp is operating has, on the inner side of the discharge vessel wall, a first phosphor layer, which faces the discharge medium and comprises a UVA component which can be excited by the VUV radiation and is intended to emit electromagnetic radiation in the UVA region. Moreover, the discharge lamp (1) has a second phosphor layer, which can be excited by the UVA radiation and is intended to emit electromagnetic radiation in the visible region. This second phosphor layer either lies beneath the first phosphor layer or is applied to the outer side of the discharge vessel wall. This results in a lower color locus shift compared to a conventional phosphor mixture which can be excited directly by VUV radiation.

The invention provides a method for making agglomerate particles, said method comprising: (a) forming by mixing at high speed a slurry of mineral agglomerate components in a polymerizable liquid resin carrier; (b) mixing said slurry with a non-miscible fluid to form discrete dispersed droplets; (c) exposing the discrete dispersed droplets to UVA radiation; (c) solidifying said droplets to form a multitude of solid particles; (d) isolating said solid particles and then firing said particles. The resulting size of the fired particles of the invention are estimated to be in the range from approximately 20 μm to approximately 500 μm.

The invention discloses an application of carnosic acid in preparation of an anti-photoaging product. The product contains low-concentration carnosic acid and at least one of pharmaceutically acceptable salt and solvate thereof; the concentration of the carnosic acid is 0.01-500 nmol / L; the product includes a drug and a skin care product; the skin care product is toner or face cream; under the specific low concentration, the carnosic acid can generate the anti-aging effect, so that the damage of UVA radiation to skin tissues is effectively inhibited; and the carnosic acid has the characteristics of natural raw materials, safety and no irritation, can be widely used in the anti-photoaging drug and skin care product, and especially has wide market prospects as a new skin care variety for development.

The invention relates to a partition test method for the ultraviolet light aging intensity of asphalt, which comprises the following concrete steps of: determining to select two different types of ultraviolet (UV) light sources; according to the different ultraviolet light sources, determining the intensity of ultraviolet light by using a UV irradiation meter or UV energy meter, and respectively carrying out space distribution determination of UV light irradiation intensity; according to test required outdoor ultraviolet light irradiation requirements, converting the total effective time of outdoor ultraviolet light irradiation into the total effective time of indoor ultraviolet light irradiation; according to different ultraviolet light source types and the space distribution situation of determined ultraviolet light irradiation intensity, carrying out partition design on an asphalt aging disk; considering asphalt thermal-ageing test requirements in current test specifications and the design of the partition aging disk, putting forward an asphalt sample dosage preparation method for light aging tests; and after carrying out light aging indoor simulation test according to the steps, carrying out macro and micro performance tests on asphalt, and carrying out comprehensive analysis on the uvioresistant light aging performance of ultraviolet through integrating the test factors such as experimental temperature, ultraviolet light irradiation intensity, ultraviolet light irradiation time, and the like. The test method is reasonable in design, specific and detailed, simple and convenient in test operations.