Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.

Abstract: A transverse-mounted membrane filtration apparatus includes an air diffuser device including a shelf-shaped member and a gas-feeding unit, the shelf-shaped member including a plurality of shelf boards being arranged in a flow path segment at an immediate upstream of an end surface of a membrane element with a predetermined distance from the end surface of the membrane element and covering an entire flow path of the membrane element along a vertical direction, the gas-feeding unit feeding a gas to the raw water for washing the membrane element through a gas-feeding port provided at a bottom portion of a flow path of the shelf-shaped member. Herein a shelf board at a lowermost position of the shelf-shaped member is inclined toward a side of the end surface of the membrane element in a vertically upper direction.

Abstract: A transverse-mounted membrane filtration apparatus includes an air diffuser device including a shelf-shaped member and a gas-feeding unit, the shelf-shaped member including a plurality of shelf boards being arranged in a flow path segment at an immediate upstream of an end surface of a membrane element with a predetermined distance from the end surface of the membrane element and covering an entire flow path of the membrane element along a vertical direction, the gas-feeding unit feeding a gas to the raw water for washing the membrane element through a gas-feeding port provided at a bottom portion of a flow path of the shelf-shaped member. Herein a shelf board at a lowermost position of the shelf-shaped member is inclined toward a side of the end surface of the membrane element in a vertically upper direction.

Abstract: A device for inserting a compact motor into a limited fitting space particularly within a small rotary instrument and rotating the motor body with respect to an axis aligned with the rotary shaft of said instrument, whereby the fitting of the motor to the instrument and the electric connection for feeding power to the motor can be achieved simultaneously, comprising means for fixing the motor in the axial direction after engaged by the axial rotation of the motor body, means for preventing the axial rotation of the motor after engaged simultaneously with said engagement of the fixing means and power feeding means electrically connected after engaged simultaneously with said engagement of the fixing and preventing means, wherein the engaging elements of the respective means are provided in the respective positions of the motor and instrument which will not oppose before the axial rotation of the motor but will oppose after the rotation.

Abstract: A method of setting durable curls in hairs in which a flow of simultaneously warmed and humidified air is applied to rolled hairs. A device for performing the method comprises a base body, a stand erected on the base body preferably in a manner foldable in the base body and a hood of substantially semi-spherical shape for defining an optimum hair setting atmosphere therein and coupled rotatably to upper end of the stay, air warming and humidifying mechanism secured outside the hood adjacent mounting position thereof to the stand for blowing warmed and humidified air inside the hood preferably from ceiling to downward open edge of the hood along inner wall thereof, and means for controlling the mechanism and disposed in the base body for easy access. In an optimum structure of the device, the base body is of a disk shape complementing the circular open end of the hood, so that when the stand is folded and the hood is rotated over the base body the hood will cover the base body compactly for storing.