Abstract: There is provided a bill handling system (1) including a camera (440), a grasping unit (430), and a control unit (100) for photographing the inside of the cashbox (10) by the camera (440) after a bill (B) in the cash box (10) is taken out by the grasping unit (430), determining whether or not a bill (B) remains in the cash box (10) based on the photographed image, and performing error processing when the bill (B) remains in the cash box (10).

Abstract: There is provided an object grasping system (100) including a camera (150), a grasping unit (140), and a control unit (110) for moving the grasping unit (140) toward an object (200A) while repeatedly specifying a relative position of the object (200A) with respect to the grasping unit (140) based on an image taken by the camera (150).

Abstract: Problem. Provided are a method for synthesizing spherical porous titanium oxide nanoparticles, which is easy to operate, does not take a long time for synthesis, and can easily adjust the particle diameter and the pore diameter of the spherical porous titanium oxide nanoparticles in accordance with the application thereof; spherical porous titanium oxide nanoparticles produced by the synthesizing method; and a gene gun carrier consisting of the spherical porous titanium oxide nanoparticles. Solution. A method for synthesizing spherical porous titanium oxide nanoparticles, includes: a step of reacting titanium isopropoxide and carboxylic acid in supercritical fluid, wherein the supercritical fluid is supercritical methanol, and the carboxylic acid is formic acid, acetic acid, benzoic acid, o-phthalic acid, fumaric acid, or maleic acid.

Abstract: Problem. Provided are a method for synthesizing spherical porous titanium oxide nanoparticles, which is easy to operate, does not take a long time for synthesis, and can easily adjust the particle diameter and the pore diameter of the spherical porous titanium oxide nanoparticles in accordance with the application thereof; spherical porous titanium oxide nanoparticles produced by the synthesizing method; and a gene gun carrier consisting of the spherical porous titanium oxide nanoparticles. Solution. A method for synthesizing spherical porous titanium oxide nanoparticles, includes: a step of reacting titanium isopropoxide and carboxylic acid in supercritical fluid, wherein the supercritical fluid is supercritical methanol, and the carboxylic acid is formic acid, acetic acid, benzoic acid, o-phthalic acid, fumaric acid, or maleic acid.