Abstract: The present disclosure is a photonic crystal fiber in which a plurality of holes are formed in a cladding, having a uniform light refractive index, capable of propagating three modes of a fundamental mode, a first higher-order mode, and a second higher-order mode, wherein the plurality of holes are disposed in a triangular lattice pattern so as to surround a center of the photonic crystal fiber with no hole disposed at the center of the photonic crystal fiber, and the photonic crystal fiber has a ratio d/A of a diameter d of each of the holes to a pitch A between the holes such that a confinement loss of a third higher-order mode at a minimum wavelength within a used wavelength range is 1.0 dB/m or more and a confinement loss at a maximum wavelength is 0.001 dB/km or less.

Abstract: An image pickup apparatus capable of communicating with an external apparatus includes an image capturing unit, a superimposing unit, and a control unit. The image capturing unit captures an image of a subject to generate a captured image. The superimposing unit superimposes first information and second information on the captured image supplied from the image capturing unit. The control unit rotates the captured image supplied from the image capturing unit in a state in which a position of the first information superimposed by the superimposing unit relative to a position of the subject is changed while a position of the second information superimposed by the superimposing unit relative to the position of the subject is kept unchanged.

Abstract: An image pickup apparatus capable of communicating with an external apparatus includes an image capturing unit, a superimposing unit, and a control unit. The image capturing unit captures an image of a subject to generate a captured image. The superimposing unit superimposes first information and second information on the captured image supplied from the image capturing unit. The control unit rotates the captured image supplied from the image capturing unit in a state in which a position of the first information superimposed by the superimposing unit relative to a position of the subject is changed while a position of the second information superimposed by the superimposing unit relative to the position of the subject is kept unchanged.

Abstract: A communication device includes a delivery unit that delivers data including an image, a receiving unit that receives a control command, a control unit that controls an operation of the communication device, an authentication unit for performing user authentication, a storing unit, a restriction unit that restricts an operation of the control command based on an authentication result of the authentication unit, and a first initialization unit and a second initialization unit for updating setting information to initial values that are stored by the storing unit. The first initialization unit updates all the setting information including the user information to initial values that are stored by the storing unit. The second initialization unit does not update at least the setting information related to the user information to initial values that are stored by the storing unit.

Abstract: Radioactive waste is first converted into hardly water-soluble powder (including a water-insoluble powder) and then solidified with a hydraulic solidifier in a solidification vessel. The radioactive waste may be powdered (including granulated and encapsulated) by incorporating the radioactive waste with a substance which is capable of reacting with the water-soluble salt contained in the radioactive waste to form a hardly water-soluble salt (including a water-insoluble salt) and then powdering the mixture with drying, or by powdering the radioactive waste with drying, granulating the powder with drying and then microencapsulating the granules with a hardly water-soluble substance (including water-insoluble substance). The hardly water-soluble salts are preferably calcium salts, and the additives are preferably calcium hydroxide solution or solvent of combination of dichloromethane solution and hexane.

Abstract: In a method of processing radioactive spent ion exchange resin, the spent ion exchange resin is pyrolyzed in an inert atmosphere and harmful decomposition gas such as sulfur and nitrogen compounds generated during pyrolysis is separated. Next, the spent ion exchange resin is pyrolyzed in oxidizing atmosphere and harmless gases such as carbon dioxide and water vapor gases are separated. It is preferred that a transition metal as a catalyst be adsorbed through ion exchange into spent cation exchange resin, and an anionic atom group containing a transition metal as a catalyst be adsorbed through ion exchange into spent anion exchange, before both of the pyrolysis steps. The pyrolysis is carried out at two atmosphere stages, and the harmful and harmless gases are decomposed separately. The pyrolysis in both of pyrolysis steps is effected at a temperature in the range of from 240.degree. to 420.degree. C.