Abstract: A heat utilization system includes: a heat recovery device configured to generate first steam and second steam with a lower pressure than the first steam from water by heat exchange between a heating fluid and the water; a discharge source which discharges the heating fluid; a first steam turbine driven by the first steam; a pressure reduction part configured to reduce pressure of exhaust steam which is steam that has driven the first steam turbine; a heat demand facility which utilizes heat of at least one of at least part of the exhaust steam or the second steam; an exhaust steam line connecting the first steam turbine and the heat demand facility; and a second steam line through which the second steam flows out of the heat recovery device. The second steam line is connected to the exhaust steam line at a position downstream of the pressure reduction part.

Abstract: A carbon dioxide recovery system includes: an iron-making facility; a gas turbine that drives a turbine with a combustion gas generated by combusting a first gas discharged from the iron-making facility; a heat exchanger that exchanges heat between a second gas discharged from the turbine of the gas turbine and a heat medium; and a carbon dioxide recovery device that recovers carbon dioxide from the second gas that has exchanged heat with the heat medium. The carbon dioxide recovery device includes: an absorption tower that causes carbon dioxide to be absorbed in an absorption liquid by bringing the second gas and the absorption liquid into contact, a regeneration tower that heats the absorption liquid to release the carbon dioxide, and a reboiler that heats the absorption liquid by exchanging heat between the absorption liquid and the heat medium that has exchanged heat with the second gas in the heat exchanger.

Abstract: An arithmetic device includes a deformation amount acquisition unit that acquires an actual measurement deformation amount of a fabrication object that is manufactured based on a target shape, the actual measurement deformation amount corresponding to a deviation amount of a shape of the fabrication object from the target shape, an analysis unit that performs an analysis, based on the target shape of the fabrication object and a reference inherent strain value corresponding to a reference value of an inherent strain of the fabrication object, and acquires an analytical deformation amount corresponding to a deviation amount of the shape of the fabrication object in the analysis from the target shape, and a strain calculation unit that calculates an estimated inherent strain value corresponding to an estimated value of the inherent strain of the fabrication object with the target shape, based on the actual measurement deformation amount and the analytical deformation amount.

Abstract: An arithmetic device includes a deformation amount acquisition unit that acquires an actual measurement deformation amount of a fabrication object that is manufactured based on a target shape, the actual measurement deformation amount corresponding to a deviation amount of a shape of the fabrication object from the target shape, an analysis unit that performs an analysis, based on the target shape of the fabrication object and a reference inherent strain value corresponding to a reference value of an inherent strain of the fabrication object, and acquires an analytical deformation amount corresponding to a deviation amount of the shape of the fabrication object in the analysis from the target shape, and a strain calculation unit that calculates an estimated inherent strain value corresponding to an estimated value of the inherent strain of the fabrication object with the target shape, based on the actual measurement deformation amount and the analytical deformation amount.

Abstract: An intraocular surgery instrument holder (1) including a translational driving unit (2) as a driving mechanism configured to be capable of movement with multiple degrees of freedom, an arm unit (3) as a passive motion mechanism coupled with the translational driving unit (2) and configured to be capable of movement with multiple degrees of freedom, and a surgical instrument holding unit (4) as a passive gimbal mechanism coupled with one end of the arm unit (3), and configured to hold an intraocular surgery instrument, and to be capable of movement with a degree of rotational freedom with an opening part of a hole in an eyeball for insertion of the intraocular surgery instrument being a fixed point. A brake mechanism for inhibiting movement of the arm unit (3) is provided to the arm unit (3).

Abstract: An additive manufacturing method for performing additive manufacturing of a metallic powder material on a surface of a metallic base material includes a step of supplying the powder material onto the surface of the base material, a step of welding the powder material to the surface in an unmelted state through friction stir of the powder material and the surface, a step of supplying the powder material onto a welded portion formed by welding the powder material to the surface, and a step of welding the powder material to the welded portion in the unmelted state through friction stir of the powder material and the welded portion.

Abstract: There is provided a method of manufacturing an optical element having a circular portion and at least one annular zone formed thereon, the circular portion having a circular profile and centered about an optical axis as viewed from a direction of an optical axis, the annular zone having an annular zonal face and a boundary wall face formed concentrically around a periphery of the circular portion, and the boundary wall face linking between the circular portion and the annular zonal face. The method is performed by rotating a workpiece about a rotation axis corresponding to the optical axis, and allowing a sharply pointed front end of a tip to prick the workpiece to a portion corresponding to an angled portion defined by the annular zonal face and the boundary wall face so that the annular zonal face is formed by side edges of a rake face of the tip.

Abstract: A method for producing a mold for a zonal optical element including forming a circular portion where, while rotating a work around a rotation axis corresponding to the optical axis as a center, a tip is relatively moved relative to the work to form the circular portion at the mold side corresponding to the circular portion on the processing surface of the work perpendicular to the rotation axis; forming a zonal surface where the tip is relatively moved relative to the work to form a zonal surface at the mold side corresponding to the zonal surface; and forming a corner portion between the boundary portion at the mold side and the zonal surface at the mold side wherein a raked surface of the tip is in contact with a portion corresponding to the boundary wall surface.

Abstract: There is provided a method of manufacturing a molding body having at least one groove thereon. The method is performed by rotating a workpiece, allowing a tip to contact with an outer peripheral or an inner peripheral face, so as to form the groove in accordance with a shape of an outer edge of the tip, and shifting a position of the tip along a direction orthogonal relative to a rake face of the tip without changing a direction of the rake face thereof, so as to form another groove having a different angle from that of the shape of the outer edge of the tip.

Abstract: A method for producing a mold for a zonal optical element having a circular portion having a circular shape taking an optical axis as a center viewed from a plane surface; at least one zonal surface formed around the circular portion in a ring form; and boundary wall surfaces connecting the circular portion with the zonal surface or connecting the zonal surfaces with each other is produced by a stage for forming a circular portion where while rotating a work around a rotation axis corresponding to the optical axis as a center, a tip is relatively moved relative to the work to form the circular portion at the mold side corresponding to the circular portion on the processing surface of the work perpendicular to the rotation axis; a stage for forming a zonal surface where the tip is relatively moved relative to the work to form a zonal surface at the mold side corresponding to the zonal surface; and a stage for forming a corner portion between the boundary portion at the mold side and the zonal surface at the mo

Abstract: A mold for a zonal optical element. The mold includes a circular portion at the mold side corresponding to the circular portion possessed by the zonal optical element; at least one zonal surface at the mold side corresponding to the zonal surface possessed by the zonal optical element; and at least one corner portion between said boundary portion at the mold side and said zonal surface at the mold side wherein said corner portion is in a sharpened state formed by bringing a raked surface of a tip into contact with a portion a portion corresponding to said boundary wall surface.

Abstract: There is provided a method of manufacturing an optical element having a circular portion and at least one annular zone formed thereon, the circular portion having a circular profile and centered about an optical axis as viewed from a direction of an optical axis, the annular zone having an annular zonal face and a boundary wall face formed concentrically around a periphery of the circular portion, and the boundary wall face linking between the circular portion and the annular zonal face. The method is performed by rotating a workpiece about a rotation axis corresponding to the optical axis, and allowing a sharply pointed front end of a tip to prick the workpiece to a portion corresponding to an angled portion defined by the annular zonal face and the boundary wall face so that the annular zonal face is formed by side edges of a rake face of the tip.

Abstract: There is provided a method of manufacturing a molding body having at least one groove thereon. The method is performed by rotating a workpiece, allowing a tip to contact with an outer peripheral or an inner peripheral face, so as to form the groove in accordance with a shape of an outer edge of the tip, and shifting a position of the tip along a direction orthogonal relative to a rake face of the tip without changing a direction of the rake face thereof, so as to form another groove having a different angle from that of the shape of the outer edge of the tip.

Abstract: A method for producing a mold for a zonal optical element having a circular portion having a circular shape taking an optical axis as a center viewed from a plane surface; at least one zonal surface formed around the circular portion in a ring form; and boundary wall surfaces connecting the circular portion with the zonal surface or connecting the zonal surfaces with each other is produced by a stage for forming a circular portion where while rotating a work around a rotation axis corresponding to the optical axis as a center, a tip is relatively moved relative to the work to form the circular portion at the mold side corresponding to the circular portion on the processing surface of the work perpendicular to the rotation axis; a stage for forming a zonal surface where the tip is relatively moved relative to the work to form a zonal surface at the mold side corresponding to the zonal surface; and a stage for forming a corner portion between the boundary portion at the mold side and the zonal surface at the mo