Abstract: An oral cavity care method uses a fine ozone bubble liquid, wherein a stock solution of the fine ozone bubble liquid has ozone gas concentration of 100 ppm or more, even if ozone gas concentration of the fine ozone bubble liquid is diluted to 4 ppm or less, the fine ozone bubble liquid has a sterilizing action, the fine ozone bubble liquid has ozone gas concentration of 4 ppm or more after frozen storage for one year or more, and in addition to the sterilizing action, the fine ozone bubble liquid has an odor component decomposition action and an antiviral action.

Abstract: Provided is a method for manufacturing a microbicide having high microbicidal performance for eradicating microbes. This method for manufacturing a microbicide comprises: a step for preparing an inorganic aqueous solution containing an inorganic component having seawater as a raw material thereof, an ozone mixing step for mixing ozone into the inorganic aqueous solution, and a stirring step for stirring the inorganic aqueous solution mixed with ozone and passing through a bubble generation nozzle; wherein, the temperature of the inorganic aqueous solution in the ozone mixing step and the stirring step is 0° C. to 30° C., and when the amount of inorganic aqueous solution treated in the ozone mixing step and the stirring step is defined as X liters and the treatment rate of the ozone mixing step and the stirring step is defined as Y liters/minute, then the microbicide is manufactured by alternately repeating the ozone mixing step and the stirring step for A·X/Y minutes (where A is 30 or more).

Abstract: Provided is a method for manufacturing a microbicide having high microbicidal performance for eradicating microbes. This method for manufacturing a microbicide comprises: a step for preparing an inorganic aqueous solution containing an inorganic component having seawater as a raw material thereof, an ozone mixing step for mixing ozone into the inorganic aqueous solution, and a stirring step for stirring the inorganic aqueous solution mixed with ozone and passing through a bubble generation nozzle; wherein, the temperature of the inorganic aqueous solution in the ozone mixing step and the stirring step is 0° C. to 30° C., and when the amount of inorganic aqueous solution treated in the ozone mixing step and the stirring step is defined as X liters and the treatment rate of the ozone mixing step and the stirring step is defined as Y liters/minute, then the microbicide is manufactured by alternately repeating the ozone mixing step and the stirring step for A·X/Y minutes (where A is 30 or more).

Abstract: The problem to be addressed by the present invention is to provide a cleaning apparatus capable of obtaining a cleaning liquid having a high degree of cleanliness. A cleaning apparatus 10 includes a dissolution tank 20 for dissolving a gas in a liquid, a transfer pump 30 for sending the liquid together with the gas into the dissolution tank 20, and a feed nozzle 40 for feeding the liquid stored in the dissolution tank 20 to a workpiece W. The transfer pump 30 is a positive displacement pump. Portions of the dissolution tank 20, the transfer pump 30, and the feed nozzle 40 that come into contact with the liquid are made of a fluororesin.

Abstract: Provided is a method for manufacturing a microbicide having high microbicidal performance for eradicating microbes. This method for manufacturing a microbicide comprises: a step for preparing an inorganic aqueous solution containing an inorganic component having seawater as a raw material thereof, an ozone mixing step for mixing ozone into the inorganic aqueous solution, and a stirring step for stirring the inorganic aqueous solution mixed with ozone and passing through a bubble generation nozzle; wherein, the temperature of the inorganic aqueous solution in the ozone mixing step and the stirring step is 0° C. to 30° C., and when the amount of inorganic aqueous solution treated in the ozone mixing step and the stirring step is defined as X liters and the treatment rate of the ozone mixing step and the stirring step is defined as Y liters/minute, then the microbicide is manufactured by alternately repeating the ozone mixing step and the stirring step for A·X/Y minutes (where A is 30 or more).

Abstract: An object of the present invention is to provide a method for manufacturing a semiconductor, including a step of removing a photoresist present on a patterned wafer substrate and having a hardened modified layer, which is difficult to remove, formed on at least part of a top portion easily and effectively under mild conditions, and a method for cleaning a wafer substrate, including the above step. The method for manufacturing a semiconductor of the present invention as a means for resolution is characterized by comprising a step of bringing a patterned wafer substrate, on which a photoresist having a hardened modified layer formed on at least part of a top portion is present, into contact with a carbon dioxide dissolved water containing ozone-containing microbubbles, thereby removing the photoresist. In addition, the method for cleaning a wafer substrate of the present invention is characterized by comprising the above step.

Abstract: An apparatus and process for production of a liquid containing fuel that avoid the need to add any extra surfactant and also the need to apply ultrasonic wave energy and attain high stability of minute bubbles, etc. Production apparatus for a liquid containing fuel comprises pump for pressurizing a stored fuel and nanobubble generating unit adapted to inject a liquid containing the pressurized fuel. The apparatus may be equipped with homogenizing means for storing the liquid containing fuel. The process for production of a liquid containing fuel is characterized by sequentially performing storing of a liquid containing fuel in storage means, pressurizing the liquid so as to obtain a high-pressure liquid with a given pressure, injecting the same through a nozzle into a matrix of liquid containing fuel and effecting collision thereof with a wall so that nanobubbles of foreign substance are dispersed in the matrix of liquid containing fuel.

Abstract: An apparatus and process for production of a liquid containing fuel that avoid the need to add any extra surfactant and also the need to apply ultrasonic wave energy and attain high stability of minute bubbles, etc. Production apparatus for a liquid containing fuel comprises pump for pressurizing a stored fuel and nanobubble generating unit adapted to inject a liquid containing the pressurized fuel. The apparatus may be equipped with homogenizing means for storing the liquid containing fuel. The process for production of a liquid containing fuel is characterized by sequentially performing storing of a liquid containing fuel in storage means, pressurizing the liquid so as to obtain a high-pressure liquid with a given pressure, injecting the same through a nozzle into a matrix of liquid containing fuel and effecting collision thereof with a wall so that nanobubbles of foreign substance are dispersed in the matrix of liquid containing fuel.