Abstract: An image forming apparatus includes a transport section that transports a recording material, a grasping section that grasps a remaining situation of a recording material remaining in a transport path through which the recording material is transported by the transport section, a reception section that receives, from a user, an input of the number of removed sheets of recording material removed from the transport path by the user in a case where the transport of the recording material by the transport section is stopped, and a start section that starts the stopped transport by the transport section based on the number of removed sheets input by the user.

Abstract: A ballast water treatment apparatus includes a filtering device including a filter for filtering seawater, an ultraviolet irradiation device that irradiates the seawater filtered by the filter with ultraviolet light, a first path for supplying the seawater filtered by the filtering device to the ultraviolet irradiation device, a discharge water path for discharging the seawater remaining in the filtering device, a first valve provided in the first path, a second path for supplying the seawater flowing from the ultraviolet irradiation device to a ballast tank, and a control device that closes the first valve and cleans the filter by using the seawater introduced into the filtering device before the seawater filtered by the filtering device is supplied to the ultraviolet irradiation device.

Abstract: A ballast water treatment system includes an ultraviolet irradiation device which irradiates ballast water flowing through a treatment line (a pipe) with ultraviolet rays, and a control unit. The ultraviolet irradiation device includes a light source which emits ultraviolet rays, and an illuminance sensor sensing an illuminance of ultraviolet rays received by the ballast water. The control unit controls the ultraviolet irradiation device to maintain at a prescribed dose a dose calculated using an illuminance sensed by the illuminance sensor and a flow rate of ballast water which flows through the ultraviolet irradiation device. When the sensed dose cannot be maintained at the prescribed dose by controlling the ultraviolet irradiation device, the control unit reduces a treatment flow rate of the ballast water which flows through the treatment line.

Abstract: A ballast water treatment apparatus includes a discharge path for discharging ballast water from a ballast tank that stores the ballast water, an ultraviolet irradiation device that includes an ultraviolet lamp and that irradiates the ballast water passing through the discharge path with ultraviolet light, a circulation path formed so that the ballast water circulates therethrough and is irradiated with ultraviolet light emitted from the ultraviolet lamp, a switching portion for switching a path through which the ballast water flows between the circulation path and the discharge path, and a control device that controls the switching portion so that the ballast water flows through the circulation path during a switching-on process of the ultraviolet lamp and controls the switching portion so that the ballast water flows through the discharge path when the switching on of the ultraviolet lamp is completed.

Abstract: A ballast water treatment apparatus includes a cylindrical pleated filter that is rotatably held about an axis of a cylinder, a driving mechanism that rotates the pleated filter, an untreated water nozzle that ejects untreated water toward an outer circumferential surface of the pleated filter, a case that is provided so as to surround the pleated filter and that includes an outer cylindrical portion including a nozzle opening of the untreated water nozzle therein, a filtered water flow path that guides filtered water that has permeated through the pleated filter from the inside of the cylinder of the pleated filter to the outside of the case, and a discharge flow path that discharges discharged water that has not been filtered by the pleated filter to the outside of the case. The ballast water treatment apparatus further includes a reverse cleaning mechanism that supplies cleaning water to the inside of the cylinder of the pleated filter through the filtered water flow path.

Abstract: A ballast water treatment apparatus includes a filtering device including a filter for filtering seawater, an ultraviolet irradiation device that irradiates the seawater filtered by the filter with ultraviolet light, a first path for supplying the seawater filtered by the filtering device to the ultraviolet irradiation device, a discharge water path for discharging the seawater remaining in the filtering device, a first valve provided in the first path, a second path for supplying the seawater flowing from the ultraviolet irradiation device to a ballast tank, and a control device that closes the first valve and cleans the filter by using the seawater introduced into the filtering device before the seawater filtered by the filtering device is supplied to the ultraviolet irradiation device.

Abstract: A ballast water treatment apparatus includes a discharge path for discharging ballast water from a ballast tank that stores the ballast water, an ultraviolet irradiation device that includes an ultraviolet lamp and that irradiates the ballast water passing through the discharge path with ultraviolet light, a circulation path formed so that the ballast water circulates therethrough and is irradiated with ultraviolet light emitted from the ultraviolet lamp, a switching portion for switching a path through which the ballast water flows between the circulation path and the discharge path, and a control device that controls the switching portion so that the ballast water flows through the circulation path during a switching-on process of the ultraviolet lamp and controls the switching portion so that the ballast water flows through the discharge path when the switching on of the ultraviolet lamp is completed.

Abstract: Cellulosic single fibers such as cotton is prepared without any resins or pitches to a mass or bulk such as a lap which is self-shaped and retains its form by a force of cohesive intertanglement of fibers. The mass as prepared is heated for carbonization or graphitization, if desired, to obtain unique shaped carbides of porous and stable structures in which the cohesion of fibers is made more dense on account of the total shrinkage of the mass by carbonization.

Abstract: Cellulosic single fibers such as cotton are prepared without any resins or pitches to a mass or bulk such as a lap which is self-shaped and retains its form by a force of cohesive intertanglement of fibers. The mass as prepared is heated for carbonization or graphitization, if desired, to obtain unique shaped carbides of porous and stable structures in which the cohesion of fibers is made more dense on account of the total shrinkage of the mass by carbonization.