Abstract:
A hydraulic control device for controlling a turbine valve is disclosed. The hydraulic control device includes a hydraulic pressure generating unit (1), a hydraulic pressure control unit (2), a hydraulic pressure actuating unit (3) and hydraulic attachments. The hydraulic pressure generating unit has an oil tank (12), an oil cooler (14) and a variable delivery type hydraulic pump (10). The hydraulic pressure control unit has a safety valve (20) and a servo valve (24). The hydraulic pressure actuating unit has a servo cylinder (30) and accumulators (32). The hydraulic attachments have a pressure reducing valve (40) and dump valves (42) and (43). Unlike the conventional control device, the present invention has a relatively simple structure. In addition, the pressure in a system can be maintained in a stable condition, and accuracy in controlling the turbine valve is increased, thus enhancing the quality of electricity supply created by a turbine.
Abstract:
The present invention relates to a composition for a texture-etching solution and to a texture-etching method for crystalline silicon wafers. More particularly, the present invention relates to a composition for a texture-etching solution and to a texture-etching method for crystalline silicon wafers, wherein the composition comprises: an alkali compound; a cyclic compound; at least one surfactant selected from the group consisting of a polyoxyethylene (POE) compound, a polyoxypropylene (POP) compound, and a copolymer thereof; and water. Thus, according to the present invention, deviations in the quality of the texture of the surface of a crystalline silicon wafer can be minimized so as to improve the uniformity of the texture structure and maximize the amount of absorbed sunlight, increase efficiency by lowering light reflectivity, significantly reduce consumption by increasing the number of sheets to be processed, and increase productivity and provide high economic feasibility since it is unnecessary to additionally feed in an etchant component during the texture-forming process.
Abstract:
Provided is an apparatus and method for controlling an access right to a plurality of services. To this end, upon receiving an authentication request for a plurality of services from a service authentication requesting unit, an access right controller may identify a plurality of authentication-requested services, and acquire an access right from a service provider providing the plurality of identified services, making it possible to acquire an access right to a plurality of services at a time.
Abstract:
Provided is an apparatus and method for controlling an access right to a plurality of services. To this end, upon receiving an authentication request for a plurality of services from a service authentication requesting unit, an access right controller may identify a plurality of authentication-requested services, and acquire an access right from a service provider providing the plurality of identified services, making it possible to acquire an access right to a plurality of services at a time.
Abstract:
Disclosed is an etching composition for texturing a crystalline silicon-based wafer, including (A) 0.1 ~ 20 wt% of at least one alkaline compound, (B) 0.1 ~ 50 wt% of at least one cyclic compound having a boiling point of 100 ~ 400°C, and (C) the remainder of water, based on the total weight of the composition.
Abstract:
A method and apparatus is provided for providing a contact through interworking with a Social Network Service (SNS). A client using the other service through SNS interworking receives a contact provided in the SNS, determines whether the other party's client having subscribed to the same service as that of the client is present in the received contact, and informs a user of the determination results. Based on the determination results, the client may determine subscription/non-subscription of the other party's client to the service, and may send an invite request for the service if the other party's client has not subscribed to the same service as that of the client. By doing so, the number of targets, subscription/non-subscription of which to a specific service can be determined, may be extended.
Abstract:
The present invention relates to a fluidized bed drying apparatus, which exposes very moist particles of an object to be dried, such as brown coal or the like, to gases having different temperature and flux conditions so as to dry the object. The apparatus for drying a fluidized bed of the present invention comprises a particle injection unit, a drying unit, a hot air supply unit, a dust-collecting unit, a filter unit, a heat exchange unit and a compression unit. The drying unit has an upper space in which multiple upper partitions are equidistantly arranged in a vertical direction such that the upper partitions are spaced apart from a porous plate. The drying unit also has a lower space in which multiple lower partitions are arranged in a vertical direction on the bottom of the drying unit such that the lower partitions penetrate through the porous plate, wherein the lower partitions are disposed at either side of each of the upper partitions. Channel spaces are defined by separating plates between the upper partitions and the lower partitions such that gases having different temperatures and fluxes are supplied to the respective channel spaces.
Abstract:
The present invention relates to a vehicle antenna which allows freedom in the design of vehicles and allows antenna characteristics such as isolation to be improved. The vehicle antenna comprises a base plate and a case for mounting the base plate. Here, at least one emitter is placed on the outer circumferential surface of the case, and the emitter receives a supply of electricity from the base plate.
Abstract:
Disclosed is a method for removing a blur from an image promptly. The method is able to remove a blur from an image quickly and improve image quality. The method comprises: a step for receiving a blurred image, an image estimation step for estimating a non-blurred image based on the blurred image, a blur information estimation step for estimating blur information from the blurred and non-blurred images, and a blur removal step for removing the blur from the blurred image based on both the blurred image and the estimated blur information, wherein the image estimation step and the blur information estimation step are repeatedly performed. Therefore, the invention can remove the blur included in an image rapidly, and is able to improve the image quality by efficiently removing the blur.
Abstract:
This invention refers to an antioxidant that contains a nano platinum ginsenoside compound, an anti-aging composition and the producing method thereof. The above-mentioned platinum ginsenoside compound is a combination of platinum and ginsenoside, which can be produced in a laboratory-scaled facility. Particularly, the platinum ginsenoside compound does not directly remove reactive oxygen species but rather acts as a catalyst to remove the radicals to ultimately display an anti-aging effect. The removal action of all types of oxygen free radicals and effective removal ability better than existing antioxidants, as well as the action of platinum as a catalyst, partially remove oxygen free radicals remaining in the body. Hence, the compound can be used effectively in medication, food, cosmetic products, etc.