Abstract: An electronic brake system may be capable of performing braking operation according to a pedal effort of a driver even when the brake system operates abnormally as well as simplifying a configuration thereof by minimizing the number of valves for controlling a flow of oil pressure and precisely controlling pressure therein.

Abstract: An electronic brake system may be capable of performing braking operation according to a pedal effort of a driver even when the brake system operates abnormally as well as simplifying a configuration thereof by minimizing the number of valves for controlling a flow of oil pressure and precisely controlling pressure therein.

Abstract: Heteronuclear radioisotope nanoparticle of core-shell structure and a preparation method thereof are provided. The Heteronuclear radioisotope nanoparticle of core-shell structure comprising core of two different radioisotopes selected from a group consisting of 198Au, 63Ni, 110mAg, 64Cu, 60Co, 192Ir and 103Pd, and a shell comprising SiO2 surrounding the core. The Heteronuclear radioisotope nanoparticle of core-shell can be used as a tracer for the purpose of detecting variation of volume ratio or for the evaluation of the behavior characteristic of a water resource, based on information about phase ratio in the flow of multiphase fluid existing in a process which is operated under extreme condition such as high temperature and/or high pressure conditions.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, a master cylinder, an input rod, and a pedal displacement sensor. The electric brake system includes a pressure supply unit to receive oil and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit to perform braking of a wheel, first and second switching valves connected to a channel connecting the pressure supply unit to the hydraulic control unit, a simulator connected to the master cylinder, and an electronic control unit to control the motor and the valves. The pressure supply unit includes a pressure chamber, a hydraulic piston arranged in the pressure chamber, a hydraulic spring to elastically support the hydraulic piston, the motor to generate rotational force, and a ball-screw member to convert rotational motion of the motor into rectilinear motion. The hydraulic piston is connected to the screw.

Abstract: An active suspension apparatus for a vehicle includes a pump configured to adjust movements of a fluid and actuators configured to receive the fluid from the pump and to compensate displacements of coil springs connected to wheels of the vehicle, in which the pump supplies the fluid contained in a cylinder to one of the actuators of left wheels of the vehicle and the actuators of right wheels of the vehicle based on the driving of a motor.

Abstract: Disclosed is an electric power steering apparatus for a vehicle. The electric power steering apparatus for a vehicle has a structure in which a motor shaft, an input shaft, a pinion shaft, and the like are coaxially disposed to improve a structure of a conventional art in which an electric motor is essentially exposed, so as to prevent interference with other structures, thereby forming a layout of the steering apparatus to be compact.

Abstract: Disclosed is an integrated electronic hydraulic brake system including an actuator having a master cylinder and a pedal simulator, an electronic stability control (ESC), and a hydraulic power unit (HPU) which are configured as a single unit. The integrated electronic hydraulic brake system may include an integrated hydraulic control unit and a power source unit, wherein the power source unit is separately provided to isolate the operational noise, and the integrated hydraulic control unit and the power source unit are connected to each other via an external pipe.

Abstract: Provided are a tri-block copolymer and an electrolyte membrane prepared therefrom. The tri-block copolymer has a structure of polar moiety-containing copolymer block/non-polar moiety-containing copolymer block/polar moiety-containing copolymer block, or non-polar moiety-containing copolymer block/polar moiety-containing copolymer block/non-polar moiety-containing copolymer block, and is useful for an electrolyte membrane for fuel cells. The electrolyte membrane for fuel cells prepared from the tri-block copolymer exhibits superior dimensional stability and excellent fuel cell performance.

Abstract: The present invention relates to a novel sulfonate-based compound, a method for preparing the same, a polymer electrolyte membrane comprising the sulfonate-based compound, a membrane electrode assembly comprising the same and a fuel cell comprising the same.

Abstract: Heteronuclear radioisotope nanoparticle of core-shell structure and a preparation method thereof are provided. The Heteronuclear radioisotope nanoparticle of core-shell structure comprising core of two different radioisotopes selected from a group consisting of 198Au, 63Ni, 110mAg, 64Cu, 60Co, 192Ir and 103Pd, and a shell comprising SiO2 surrounding the core. The Heteronuclear radioisotope nanoparticle of core-shell can be used as a tracer for the purpose of detecting variation of volume ratio or for the evaluation of the behavior characteristic of a water resource, based on information about phase ratio in the flow of multiphase fluid existing in a process which is operated under extreme condition such as high temperature and/or high pressure conditions.

Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, an input rod, and a pedal displacement sensor to sense a displacement of a brake pedal. The electric brake system includes a pressure supply unit connected to the reservoir and a hydraulic channel and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit provided with a first circuit and a second circuit, a shut-off valve to control the hydraulic pressure transferred to a wheel cylinder, a switching valve connected to a channel connecting the pressure supply unit to the hydraulic control unit, a compliance unit installed in a channel connected to the shut-off valve and the switching valve and including a compliance chamber, a piston and an elastic member, a simulator connected to the master cylinder to provide reaction force, and an electronic control unit to control the motor and the valves.

Abstract: Disclosed is a composite electrolyte membrane comprising a microporous polymer substrate and a sulfonated polymer electrolyte.

Abstract: Disclosed is a composite electrolyte membrane comprising a microporous polymer substrate and a sulfonated polymer electrolyte.

Abstract: Provided are a tri-block copolymer and an electrolyte membrane prepared therefrom. The tri-block copolymer has a structure of polar moiety-containing copolymer block/non-polar moiety-containing copolymer block/polar moiety-containing copolymer block, or non-polar moiety-containing copolymer block/polar moiety-containing copolymer block/non-polar moiety-containing copolymer block, and is useful for an electrolyte membrane for fuel cells. The electrolyte membrane for fuel cells prepared from the tri-block copolymer exhibits superior dimensional stability and excellent fuel cell performance.

Abstract: Provided are a polymer electrolyte membrane for fuel cells, and a membrane electrode assembly and a fuel cell including the same. More specifically, provided is a polymer electrolyte membrane for fuel cells including a hydrocarbon-based cation exchange resin having hydrogen ion conductivity and fibrous nanoparticles having a hydrophilic group. By using the fibrous nanoparticles having a hydrophilic group in conjunction with the hydrocarbon-based cation exchange resin having hydrogen ion conductivity, it is possible to obtain a polymer electrolyte membrane for fuel cells that exhibits improved gas barrier properties and long-term resistance, without causing deterioration in performance of fuel cells, and a fuel cell including the polymer electrolyte membrane.

Abstract: This invention relates to a method of preparing a radioisotope nanostructure having a ligand-metal framework, and a radioisotope nanostructure prepared thereby. The method of preparing the radioisotope nanostructure of the invention has a simple preparation process and can thus be applied to mass production of a radioisotope nanostructure. Also, because this radioisotope nanostructure is nano-sized spherical particles and has no reactive group, it can be easily dispersed in a fluid, and this nanostructure is physically and chemically stable and thus can be utilized as a radioisotope tracer in the fields of refineries, chemistry, cement, agriculture, water resources, marine, etc. Furthermore, this nanostructure can be used for diagnosis and/or treatment in medical fields, and can be applied to checking whether a nanomaterial is harmful. In addition, this nanostructure is expected to be applicable in a variety of fields using radioisotopes.

Abstract: A method of preparing radioisotope hybrid nanocomposite particles using a sol-gel reaction, and radioisotope hybrid nanocomposite particles prepared using the same are provided. The method includes preparing a complex precursor using a metal ion and an unshared electron pair reactive compound, growing hybrid nanocomposite particles based on the complex precursor by means of a sol-gel reaction, calcining the nanocomposite particles in the air to remove organic matters present in the nanocomposite particles, and irradiating the nanocomposite particles with neutrons to prepare radioisotope hybrid nanocomposite particles. The radioisotope nanocomposite particles prepared using the method can be used as diagnostic and therapeutic particles in the fields of oil refining, chemistry, cement, agriculture, water resources, environment, ocean, and medicine, and can also be used as a radioisotope tracer for evaluating the risk of nanomaterials.