Abstract: A hydro turbine has a housing with a cylindrical chamber and opposed end walls with laterally spaced smaller rectangular inlets and laterally spaced larger rectangular outlets formed in upper and lower portions of the chamber side wall in horizontally opposed relation. Smaller rectangular inlet ducts adjoin the inlets, and larger rectangular outlet ducts adjoin the outlets. A cylindrical runner surrounding a power take-off shaft is rotatably enclosed in the chamber and has a central cylindrical hub divided into laterally spaced hub portions with a first and second plurality of circumferentially spaced peripheral blades extending angularly outward from each hub portion, the first plurality of blades being circumferentially offset from the second.

Abstract: A radiation imaging system for an object comprises a convergence type radiation generating unit for producing radiations having a radiation bundle so that it converges onto a given location, a radiation sensor unit opposed to the radiation generating unit with the object interposed therebetween, a pinhole member placed between the object and the radiation sensor unit, and a signal processing unit for processing an output signal of the radiation sensor unit.

Abstract: A method of detecting a disparity in a cyclic length of a printed pattern includes the steps of scanning a to-be-checked sheet on which predetermined patterns are cyclically printed in the longitudinal direction by an electronic camera to obtain image data corresponding to a pattern, extracting outline data representing an outline of the pattern from the image data, writing the outline data extracted in the extraction step into a memory with a predetermined cycle in accordance with travel position data of the to-be-checked sheet, reading out the outline data, and comparing first outline data for one cycle read out from the memory and second outline data which is read out after the first outline data is read out. Disparity of a cyclic length of the pattern is detected based on a correlation between the first and second outline data, e.g., a coincidence or noncoincidence therebetween, in accordance with the comparison result in the comparison step.