Abstract: Disclosed is a polarized light generating device based on an optical waveguide, which includes first to fourth input optical waveguides, respectively, for receiving input light from an outside, first to fifth optical splitters configured to receive at least one light and output the received at least one light as at least one light, and an optical converter configured to receive at least one light from the fifth optical splitter and convert the received light to generate polarized light. The polarized light generating device receives the input light through one of the first to fourth input optical waveguides, and generates a first polarized light, a second polarized light, a third polarized light, and a fourth polarized light. The first to fourth polarized lights belong to elements of two arbitrary two-dimensional mutually unbiased basis sets.

Abstract: A grinding wheel includes a plurality of wheel tips. The plurality of wheel tips include a plurality of diamond abrasive grains and a bonding material mixed with the diamond abrasive grains. The plurality of diamond abrasive grains have a ratio of a length in a long axis direction to a width in a short axis direction of 1:2.5 to 1:3.5 and includes edges or vertices having a grinding angle of 90° or less.

Abstract: An embodiment sulfur dioxide-based inorganic electrolyte is provided in which the sulfur dioxide-based inorganic electrolyte is represented by a chemical formula M·(A1·Cl(4-x)Fx)z·ySO2. In this formula, M is a first element selected from the group consisting of Li, Na, K, Ca, and Mg, A1 is a second element selected from the group consisting of Al, Fe, Ga, and Cu, x satisfies a first equation 0?x?4, y satisfies a second equation 0?y?6, and z satisfies a third equation 1?z?2.

Abstract: Disclosed is a uroflowmeter attachable to a toilet capable of diagnosing a BPH with high reliability and convenience in a sanitary way without the constraints of a space by checking the urinary flow rate of a patient. The uroflowmeter includes a toilet bowl for temporarily storing feces and urine, a connection tube which has one end introduced into water of the toilet bowl, a pressure measuring unit connected with an opposite end of the connection tube to measure pressure inside the toilet bowl, a signal analyzing unit for analyzing pressure signals from the pressure measuring unit to measure a urinary volume signal and a urinary flow rate signal, a display unit for displaying the urinary flow rate signal measured by the signal analyzing unit, and a wireless transceiver unit for making data communication with the signal analyzing unit in a wireless way.

Abstract: A method and system for measuring a urinary flow rate minimizes impact noise caused by urine to measure the urinary flow rate using a plurality of load cells when prostatic hypertrophy is diagnosed. The method includes measuring an amount of urine collected into a container using a plurality of load cells, extracting and averaging urinary flow rate signals from the measured results, and removing the impact noise from the urinary flow rate signals, converting the urinary flow rate signals into digital signals through an A/D converting circuit, and outputting the digital signals using a personal computer or a microprocessor analyzer which is interfaced with the A/D converting circuit.

Abstract: A method and system for measuring a urinary flow rate minimizes impact noise caused by urine to measure the urinary flow rate using a plurality of load cells when prostatic hypertrophy is diagnosed. The method includes measuring an amount of urine collected into a container using a plurality of load cells, extracting and averaging urinary flow rate signals from the measured results, and removing the impact noise from the urinary flow rate signals, converting the urinary flow rate signals into digital signals through an A/D converting circuit, and outputting the digital signals using a personal computer or a microprocessor analyzer which is interfaced with the A/D converting circuit.