摘要:
Needless repairs can be avoided, and energy savings can be achieved, through installation of windows using methods that incorporate the use of extruded water-resistant foam, bonding tape covering the flanges and fasteners or windows and building wrap covering the bonding tape. This system becomes part of the window, system to improve strength, air and moisture penetration Also eliminating the building wrap bonding tape at the head prevents trapping moisture behind build bonding tape. This system eliminates all voids around the window and frame and becomes part of the structure of the window, etc.
摘要:
This invention relates to a process for beneficiating a titaniferous ore. The process comprises leaching the titaniferous ore with sulfuric acid to form a leached ore, calcining the leached ore in the presence of oxygen to form a calcined ore, and leaching the calcined ore with sulfuric acid, hydrochloric acid, and/or nitric acid to form a beneficiated ore. The leached ore is not reduced prior to or following calcination.
摘要:
A system for protecting and draining expansion joints joining juxtaposed discrete sections of construction materials is disclosed in which a pair of laterally disposed sheet members having free ends rebent into moveably interlocked curves, and secured ends fixed to the construction material sections cooperate to form a liquid collector between the sections of construction materials such that compensation for changes in the width of the gap is accomplished by relative movement of the interlocked curves. A cover member spans the joint above the sheet members.
摘要:
A method and apparatus are provided wherein a moving light source is passed over a surface whose shape is to be determined, in two orthogonal paths and is fixed at a plurality of positions along each path such that the light source illuminates the surface at a different slope for each position. A binary image camera photographs the surface for each of the fixed positions and the point at which each of a plurality of points on the surface is first illuminated and last illuminated, as well as the points that last shadowed or last failed to shadow any given point, are recorded. Constraint equations develop the effect a given point has on its last and failing shadowers and the effect each last and failing shadower has on the given point. Upper and lower bounds of these points are iteratively re-calculated according to the constraint equations until none of the points exhibit any more change in their upper and lower bounds.