A nail lamp for curing a light-curable nail product on a user's nail. The nail lamp includes a housing, a curing plane defined by the housing, at least one nail curing light source supported by the housing and at least one image projecting light source supported by the housing. The housing has an open cavity forming a nail treatment space, wherein the nail treatment space is bounded by the housing and the curing plane. The at least one nail curing light source transmits nail curing light onto the curing plane in an optimal curing area and the at least one image projecting light source projects a visible light image on the curing plane adjacent the optimal curing area for guiding a positioning of the user's nail in the optimal curing area.

A polymerization reactor for production of a super absorbent polymer according to the present disclosure includes: a composition supply part for supplying a monomer composition solution; a central pipe connected to the composition supply part; a composition distribution part including a water storage tank located at a discharge port of the central pipe; a distribution pipe connected to the water storage tank; and an ultrasonic device installed inside the water storage tank, a conveyor belt located under the composition distribution part and on which the composition solution is dropped, and an energy supply part for supplying polymerization energy to the composition solution on the conveyor belt, wherein the ultrasonic device supplies bubbles to the composition solution flowing into the water storage tank.

A composite photocatalyst, comprising V.sub.2AlC@V.sub.2O.sub.5/TiO.sub.2 heterojunction. The composite can be either supported or unsupported. Additionally, a process for producing this composite, particularly V.sub.2AlC@V.sub.2O.sub.5/TiO.sub.2, involves the steps of mixing a titanium precursor and an alcohol solvent, and stirring to obtain a first solution; mixing an acid with an alcohol solvent, and stirring to form a second solution; mixing the second solution and the first solution, and stirring to obtain a third solution; dispersing V.sub.2AlC in the alcohol solvent; adding the dispersed V.sub.2AlC to the third solution to get a suspension, and stirring the suspension for a predetermined period; drying the suspension to obtain a dried product; grinding the dried product into fine powder; and calcining the ground product to obtain the composite. The composite photocatalyst can also be used in a CO.sub.2 reduction process, wherein the photocatalyst is irradiated in a photoreactor system.

Provided is a method of manufacturing a module structure for photomicro-reactors. The method of manufacturing a module structure for photomicro-reactors according to an aspect of the present invention, which is a method of manufacturing the module structure for photomicro-reactors inside which a reactant and a photocatalyst flow and photochemically react, includes mixing a polymer and a photoinitiator to prepare a photocurable resin, exposing one region of a surface of the photocurable resin to ultraviolet light to form a unit layer having a predetermined thickness, placing the photocurable resin on an upper side of the unit layer, and forming and stacking a plurality of the unit layers by repeatedly performing the forming of the unit layer and the placing of the photocurable resin to form the module structure.

The present invention is directed to piezo photocatalytic process for the production of hydrogen from water, wherein the process comprises the steps of: (a) providing non-metal-doped barium titanate which includes at least one defect; (b) contacting the non-metal-doped barium titanate provided in step (a) with water to form a mixture; and (c) subjecting the mixture formed in step (b) to: (i) actinic radiation; and (ii) mechanical force, to produce hydrogen from the water, as well as non-metal-doped barium titanate and methods of production thereof.

Provided is a system and associated method for the degradation of plastic materials. The system includes a body, hopper, conveying system, drive system and a UV light assembly. The associated method includes providing a polymer material into the hopper, providing a solvent into the hopper, activating the drive system, and activating the UV light.

A fluid flow conduit comprises a flow-shaping element shaped to control the velocity distribution of fluid flowing therethrough. A conduit body is shaped to define a longitudinally oriented interior flow region. The flow-shaping element comprises a flow-shaping channel shaped to provide a first curved channel portion curved about a longitudinal axis in a first angular direction to impart angular momentum about the longitudinal axis in the first angular direction on fluid flow therethrough. The flow-shaping channel may be shaped to provide a second curved channel portion that is curved about the longitudinal axis in a second angular direction (opposed to the first angular direction) to impart angular momentum about the longitudinal axis in the second angular direction on fluid flow therethrough. The flow-shaping channel may be shaped to provide one or more slits that communicate fluid between the first and second curved channel portions and a central bore portion.

Provided are systems and methods for treating a biological fluid, e.g., to inactivate pathogens.

The present invention discloses a temporary ring inner diameter filling device and its application method, belonging to the field of jewelry repair technology. The device features a specially designed ring holder and clamping pads that securely fix the ring in place, ensuring smooth application and ultraviolet (UV) curing of UV-curable adhesive. The design allows the operator to easily control the ring's position and angle, enhancing the accuracy and uniformity of the filling effect. The use of UV-curable adhesive as the filling material provides excellent flexibility and adhesion, and leaves no visible marks or aesthetic impact after curing, thus preserving the original appearance of the ring. The application method includes a polishing step to ensure a smooth and even surface post-filling, improving the visual quality to meet aesthetic demands.

The present invention relates to a plant for producing hydrogen and/or methanol from organic compounds or coal. In particular, the plant of the present invention comprises a primary, thermo- and photocatalytic reactor comprising a pressure-tight main body equipped with a UV irradiation system. The invention further relates to a process for producing hydrogen and/or methanol from organic compounds or coal based on the sulphur-iodine cycle and the use of noble metal-based catalytic systems and/or photocatalytic systems.