Abstract: The present invention discloses a method of releasing a roughened surface of a washed cloth (21) which can prevent a cloth (21) with fibers protruding therefrom from being roughened due to fiber lumping after washing. The method of releasing the roughened surface of the washed cloth (21) generated when the cloth (21) is rubbed with wash water filled in a tub (10) by rotation of a drum (20) includes a first step of discharging the wash water from the washed cloth (21) to the tub (10), by rotating the drum (20) so that the washed cloth (21) can stick to the drum (20), and a second step of solving fiber lumping of the washed cloth (21), by using the motion of the washed cloth (21) by a frictional force between the rotated drum (20) and the washed cloth (21) by rotating the drum (20).

Abstract: Disclosed is an automatic analysis method of crude oils, using spectroscopy. A near infrared spectroscopic analysis apparatus is combined with an ordinary distillation apparatus, so as to analyze the physical properties of each oil distillate as soon as it is separated from crude oils, thereby bringing about a significant improvement in analysis accuracy and in an economical aspect. It takes only two days for one person to obtain a full assay data for crude oils by taking advantage of the method. In addition to requiring a significantly reduced equipment cost, the method enables full assay data for crude oils to be obtained quickly, thereby securing more up-to-date information about crude oils and producing an economical benefit.