Abstract: The present invention relates to a method for analyzing a severe accident at a nuclear power plant by using a modular analysis code, comprising the step of: receiving the input of a nuclear power plant to be analyzed and an accident sequence; selecting, from a modular analysis code, an individual module for analyzing a severe accident that is triggered by the accident sequence; setting an accident simulation variable for simulating the severe accident from a nuclear power plant input model; determining whether the accident simulation variable is valid; and, if determined to be valid, analyzing the severe accident through the modular analysis code by using the accident simulation variable, wherein the individual module of the modular analysis code includes: a master module; a first module for analyzing in-core phenomena in the event of a severe accident; a second module for analyzing ex-core phenomena in the event of a severe accident; and a third module for analyzing behaviors of fission products in the event

Abstract: A pixel array in an image sensor includes a first pixel group. The first pixel group includes unit pixels that include photoelectric conversion units and a first signal generation unit shared by the photoelectric conversion units. The first signal generation unit includes transfer transistors connected to the photoelectric conversion units, respectively, a first floating diffusion node connected to the transfer transistors, a plurality of driving transistors connected to the first floating diffusion node and connected in parallel with one another, and a plurality of selection transistors connected in parallel between a first output terminal and the plurality of driving transistors. The first output terminal outputs pixel signals that correspond to photo charges collected by the photoelectric conversion units, respectively. A number of the plurality of selection transistors is equal to a number of the plurality of driving transistors.

Abstract: A pixel array in an image sensor includes a first pixel group. The first pixel group includes unit pixels that include photoelectric conversion units and a first signal generation unit shared by the photoelectric conversion units. The first signal generation unit includes transfer transistors connected to the photoelectric conversion units, respectively, a first floating diffusion node connected to the transfer transistors, a plurality of driving transistors connected to the first floating diffusion node and connected in parallel with one another, and a plurality of selection transistors connected in parallel between a first output terminal and the plurality of driving transistors. The first output terminal outputs pixel signals that correspond to photo charges collected by the photoelectric conversion units, respectively. A number of the plurality of selection transistors is equal to a number of the plurality of driving transistors.

Abstract: The present invention relates to a method for whitening teeth. The method for whitening teeth according to the present invention can promote the whitening activity of a tooth whitening agent and increase the degree of permeation of the whitening agent into the teeth, thereby obtaining an excellent whitening effect. Therefore, an excellent whitening effect can be obtained despite the use of low-concentration peroxide, compared with the use of high-concentration peroxide.

Abstract: The present invention relates to a method for whitening teeth. The method for whitening teeth according to the present invention can promote the whitening activity of a tooth whitening agent and increase the degree of permeation of the whitening agent into the teeth, thereby obtaining an excellent whitening effect. Therefore, an excellent whitening effect can be obtained despite the use of low-concentration peroxide, compared with the use of high-concentration peroxide.

Abstract: Provided is a hydraulic test device for head loss of a strainer and a test method thereof, wherein the hydraulic test device comprises a circulation pipe; an inflow container; a container; a debris interceptor; sensors; a circulation pump; a flow meter; a circulation heating heater; and a data acquisition part which stores data sensed by each sensor, flow rate data.

Abstract: Provided is a hydraulic test device for head loss of a strainer and a test method thereof, wherein the hydraulic test device comprises a circulation pipe; an inflow container; a container; a debris interceptor; sensors; a circulation pump; a flow meter; a circulation heating heater; and a data acquisition part which stores data sensed by each sensor, flow rate data.