Abstract: A fuel cell system and a method of controlling the system are provided. The fuel cell system includes: a fuel cell having a plurality of cells to generate power through a reaction between hydrogen supplied to an anode space and oxygen supplied to a cathode space; a power storage device to be charged with power generated by the fuel cell or discharged to supply power; and a controller. The controller recirculates hydrogen, diffused from the anode space to the cathode space, into the anode space by supplying power charged in the power storage device to the fuel cell when the power generation of the fuel cell is stopped. The controller is configured to control whether to supply the power to the fuel cell based on a pressure measured in the anode space and voltages of the cells that constitute the fuel cell.

Abstract: A pixel includes: a light emitting element; a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is to be applied, and a third node electrically connected to the light emitting element; and a bias control transistor configured to be controlled in operating timing thereof by a bias control signal, and configured to switch electrical connection between the second node and a bias power line for transmitting a bias voltage. In one frame period, a voltage level of the bias voltage to be applied to the second node sequentially increases.

Abstract: A pixel includes: a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is applied, and a third node electrically connected to the light emitting element; a first emission control transistor having an on-off timing controlled by a first emission control signal; and a second emission control transistor having an on-off timing controlled by a second emission control signal. A time interval exists between a time at which the first emission control signal having a turn-on level is input such that a voltage of the second node is dropped from a bias voltage having a voltage level higher than a voltage level of the first power voltage and a time at which the second emission control signal having a turn-on level is input.

Abstract: A pixel includes: a first transistor including a gate electrode electrically connected to a first node, a second node to which a first power voltage for driving the light emitting element is applied, and a third node electrically connected to the light emitting element; a first emission control transistor having an on-off timing controlled by a first emission control signal; and a second emission control transistor having an on-off timing controlled by a second emission control signal. A time interval exists between a time at which the first emission control signal having a turn-on level is input such that a voltage of the second node is dropped from a bias voltage having a voltage level higher than a voltage level of the first power voltage and a time at which the second emission control signal having a turn-on level is input.

Abstract: Proposed is a process of producing a high-quality lube base oil using a refined oil fraction obtained from waste lubricant as a feedstock. The process includes purifying waste lubricant to obtain a refined oil fraction, pretreating the refined oil fraction, and blending the pretreated refined oil fraction with unconverted oil (UCO), before or after vacuum distillation and catalytic dewaxing of the unconverted oil, or between the vacuum distillation and the catalytic dewaxing of the unconverted oil.

Abstract: Proposed is a process of producing a high-quality lube base oil using a refined oil fraction obtained from waste lubricant as a feedstock. The process includes purifying waste lubricant to obtain a refined oil fraction, pretreating the refined oil fraction, and blending the pretreated refined oil fraction with unconverted oil (UCO), before or after vacuum distillation and catalytic dewaxing of the unconverted oil, or between the vacuum distillation and the catalytic dewaxing of the unconverted oil.

Abstract: Proposed is a process of producing a high-quality lube base oil using a refined oil fraction obtained from waste lubricant as a feedstock. The process includes purifying waste lubricant to obtain a refined oil fraction, pretreating the refined oil fraction, and blending the pretreated refined oil fraction with unconverted oil (UCO), before or after vacuum distillation and catalytic dewaxing of the unconverted oil, or between the vacuum distillation and the catalytic dewaxing of the unconverted oil.

Abstract: The present invention relates to a music game apparatus and a recording medium therefor and, more specifically, provides an operation guide note consisting of a start note, a cadence note, and a path indicated line connecting the same, and determines the success of the operation of a corresponding note only by the time interval and direction of moving the operation along the path indicated line, thereby enabling the playing of a game in accordance with a tempo of a music, and improving the interest for the game.

Abstract: The present invention relates to a music game apparatus and a recording medium therefor and, more specifically, provides an operation guide note consisting of a start note, a cadence note, and a path indicated line connecting the same, and determines the success of the operation of a corresponding note only by the time interval and direction of moving the operation along the path indicated line, thereby enabling the playing of a game in accordance with a tempo of a music, and improving the interest for the game.

Abstract: Provided are a mobility control fluid composition for enhancing oil recovery from an oilfield used for enhancing oil recovery from the oilfield and an enhanced oil recovery method using the same, and more specifically, a mobility control fluid composition including an amine oxide compound and an enhanced oil recovery method from an oilfield using the same. By using the mobility control fluid composition including the amine oxide compound for enhancing oil recovery from the oilfield according to the present invention, foam formation and mobility of the fluid may be effectively controlled.

Abstract: An apparatus and method for verifying a logic function of a semiconductor chip in a logic chip emulation environment where a processing engine and a target interface engine interact with each other. The apparatus in accordance with the present invention generally includes a processing engine for executing a software algorithm corresponding to the logic design of the target chip, and a target interface engine interfacing with the target system for transmitting/receiving pin signals to/from the target system. The software algorithm has one or more software variables, and the transmission/reception of the pin signals by the target interface engine occurs with the execution of the software algorithm by the processing engine. The software variable and the pin signals are time-variant with the execution of the algorithm.