Abstract: In a driving system, first and second inverters are connected to a driving motor, one end of a stator winding through which 3-phase current flows is connected to an output line of the first inverter, and the other end of the stator winding is connected to an output line of the second inverter. A winding pattern of the driving motor includes: coils wound in slots defined in the stator and to which 3-phase current is applied; coils wound on innermost and outermost sides based on a direction toward a rotating shaft of the driving motor in the slots, and being energized by different AC phases; and coils disposed between a first coil located on the outermost side and a second coil located on the innermost side, and being energized by the same AC phases as those of the first and second coils.

Abstract: The present invention provides a novel compound isolated from yeasts and its use as a bio-surfactant. The bio-surfactant of the present invention shows high surfactant activity, is biodegradable, and is safe to the human body due to its low toxicity. Also, the bio-surfactant of the present invention can be eco-friendly produced through a cultivation of a microorganism in large quantities.

Abstract: Disclosed is a novel compound having biosurfactant activity that is produced by Aureobasidium pullulans L-3-GPY strains (KCCM11200P). The novelty of the structure of the compound having biosurfactant activity was evaluated using spectroscopy, and it was determined that the biosurfactant produced by the strains has excellent surfactant activity. Active ingredients of the biosurfactant may be used for various purposes, for example, for producing a composition for washing and cleaning agents. Furthermore, they can be used in a variety of industrial fields where chemically synthesized surfactants are used such as medicines, foods, cosmetics, onshore and offshore oil decontamination, degradation of oil and fat in treatment tanks, and the like where chemically synthesized surfactants are used.

Abstract: Disclosed are novel compounds having biosurfactant activity that are produced by an Aureobasidium pullulans L-3-GPY strain. The chemical structure of the novel compounds having biosurfactant activity has been analyzed by using a spectrophotometer, and it has been confirmed that the compounds produced by the above strain show excellent surfactant activity. The active ingredient of the biosurfactant according to the present invention can be applied in various fields such as a cleansing and purifying compositions. Further, the active ingredient of the biosurfactant can be used in numerous industrial fields where chemical surfactants have been conventionally used such as medical, foods, cosmetics, purification of oil contaminated land and seawater, milk fat degradation, and the like.

Abstract: Disclosed is a novel compound having biosurfactant activity that is produced by Aureobasidium pullulans L-3-GPY strains (KCCM11200P). The novelty of the structure of the compound having biosurfactant activity was evaluated using spectroscopy, and it was determined that the biosurfactant produced by the strains has excellent surfactant activity. Active ingredients of the biosurfactant may be used for various purposes, for example, for producing a composition for washing and cleaning agents. Furthermore, they can be used in a variety of industrial fields where chemically synthesized surfactants are used such as medicines, foods, cosmetics, onshore and offshore oil decontamination, degradation of oil and fat in treatment tanks, and the like where chemically synthesized surfactants are used.