Abstract: A fuel cell vehicle includes a cell stack, a DC level converter, an output unit, a first switching unit disposed between a positive output terminal of the DC level converter and a positive input terminal of the output unit, a second switching unit disposed between a negative output terminal of the DC level converter and a negative input terminal of the output unit, a resistor and a third switching unit connected to each other in series between the positive output terminal of the DC level converter and the negative output terminal of the DC level converter, a fourth switching unit disposed between a contact point between the resistor and the third switching unit and the positive input terminal of the output unit, and a controller for controlling switching operation of the first, second, third and fourth switching units according to an operation mode.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating voiding dysfunction and a health functional food for preventing or improving of voiding dysfunction, comprising extract of Piper Longum L. as an active ingredient. The extract of Piper Longum L. according to the present invention is not only harmless, but also has outstanding effects of preventing, treating and improving voiding dysfunction by being involved in various mechanisms related to voiding dysfunction simultaneously so that it may increase a micturition interval, decrease a micturition pressure, increase a bladder capacity, inhibit detrusor contraction and induce relaxation of detrusor.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating voiding dysfunction and a health functional food for preventing or improving of voiding dysfunction, comprising extract of Piper Longum L. as an active ingredient. The extract of Piper Longum L. according to the present invention is not only harmless, but also has outstanding effects of preventing, treating and improving voiding dysfunction by being involved in various mechanisms related to voiding dysfunction simultaneously so that it may increase a micturition interval, decrease a micturition pressure, increase a bladder capacity, inhibit detrusor contraction and induce relaxation of detrusor.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating voiding dysfunction and a health functional food for preventing or improving of voiding dysfunction, comprising extract of Piper Longum L. as an active ingredient. The extract of Piper Longum L. according to the present invention is not only harmless, but also has outstanding effects of preventing, treating and improving voiding dysfunction by being involved in various mechanisms related to voiding dysfunction simultaneously so that it may increase a micturition interval, decrease a micturition pressure, increase a bladder capacity, inhibit detrusor contraction and induce relaxation of detrusor.

Abstract: A walking-assistant device is provided comprising a driving unit that includes four wheels and four actuators for adjusting heights of the four wheels, a mechanism unit that includes two vertical frames whose length is adjusted and connection frames for fixing and connecting the vertical frames, and a manipulation unit that includes a plurality of sensors for grasping a user's moving intention and controls the driving unit and the mechanism unit based on a signal detected by the sensors.

Abstract: A walking-assistant device is provided comprising a driving unit that includes four wheels and four actuators for adjusting heights of the four wheels, a mechanism unit that includes two vertical frames whose length is adjusted and connection frames for fixing and connecting the vertical frames, and a manipulation unit that includes a plurality of sensors for grasping a user's moving intention and controls the driving unit and the mechanism unit based on a signal detected by the sensors.