摘要:
This disclosure has one object to provide radiation tomography apparatus that allows acquisition of a sectional image having an accurately mapped radiopharmaceutical localization in an internal structure of a subject. According to one embodiment, a top board stops several times between a starting position forwardly in a top board movement direction and a termination position backwardly in the top board movement direction. Both CT image and the PET image are acquired upon stop of the top board. With the conventional method, the subject in the PET image and that in the CT image deviate from each other in position. In contrast to this, with the configuration of this disclosure, assumed that once movement of the top board is one step, a CT image taken two steps before has been acquired in every taking of the PET image by several times. Superimposing of these images may realize accurate mapping of radiopharmaceutical localization in the internal structure of the subject.
摘要:
A technique of computing a realistic cross-section layout of a wire bundle which corresponds to the initial arrangement of wires. Geometrical data are obtained by a geometrical data obtaining means (11a), and the layout data corresponding to the geometrical data is obtained by layout data obtaining means (11b). Boundary data is calculated based on the layout data by boundary data calculation means (11c), and bundling shape data corresponding to the boundary data and showing the shape of the cross-section layout of the wire bundle is obtained by a bundling shape data obtaining means (11d). The boundary data is deformed toward the bundling shape data by a boundary data deformation means (11e), and the layout data are is adjusted to an arrangement of each cross-sectional shape by massing all of the plurality of cross-sectional shapes, which arrangement is by calculating each movement of the plurality of cross-sectional shapes in the boundary data according to a contact between boundary data and the cross-sectional shape, or a contact between each cross-sectional shape. The cross-section layout data based on the adjusted layout data is outputted by a cross-section layout data outputting means (11g).
摘要:
A cutting insert comprising a cutting edge; a rake face region formed continuously with the cutting edge; and a clamp face region located more inward and higher than the rake face region. The cutting insert comprising, on the rake face region, a first rake face formed continuously with the cutting edge; a second rake face formed in an inclined surface shape from the first rake face toward the clamp face region; a projection formed so that at least a part of the projection is located on the first rake face, and comprising a top portion disposed at a position corresponding to a middle region of the cutting edge when viewed from above; and a concave part or a convex part formed so that at least a part thereof is located on the second rake face, and located more inward than the projection when viewed from above. Thereby, in groove machining in which the chip discharge space is narrow, chip accumulation into the insert and frictional resistance generated in the rake face region is decreased, exhibiting high cutting discharge performance. A cutting tool mounting the cutting insert, and a method of cutting a work material using the cutting tool are also provided.
摘要:
Yellow iron oxide pigments having improved heat stability are prepared by subjecting an alkaline slurry of conventional yellow iron oxide, a soluble ferric salt, and sodium aluminate to a hydrothermal (autoclave) treatment at 100.degree.-240.degree. C., separating and slurrying the resultant solid product, and subjecting that product to a second hydrothermal treatment of 250.degree.-350.degree. C. The original iron oxide has a heat stability (based on color change from yellow to red) temperature of about 203.degree. C., while the final product shows a change at 270.degree. C.