Abstract: Standard mosaic geometries in modern imaging systems, such as a thermal imager, give rise to the fundamental limitation of creating undersampled images that are degraded by aliasing which is a distortion affecting spatial frequency components of the image that are higher than half the sampling frequency. A point target image can either cover one image sensing element and generate a strong single signal or cover up to four adjacent sensing elements which will produce much weaker signals and result in edges of a spread target being degraded by spurious registration. In order to minimize aliasing for a square sampling grid, improved geometries for the detector elements are used which reduce the number of dead zones associated with the current square geometries for the detector elements. One type of geometry for a detector element is a robigon having the form of a polygon obtained by substituting linear sides of a square by a triangular wave shaped edge.

Abstract: Methyl ketones are prepared in liquid phase by oxidizing terminal olefins of the formula R--CH.dbd.Ch.sub.2, where R is a hydrocarbon radical. The oxidizing agent is hydrogen peroxide or an organic hydroperoxide, and the catalyst is a palladium catalyst of the formula Pd AA' whereA is fluoborate, acetate or trifluoroacetate, andA' is OOR.sub.1 and where R.sub.1 is a hydrocarbon radical.

Abstract: Methyl ketones are prepared in liquid phase by oxidizing terminal olefins of the formula R--CH.dbd.CH.sub.2, where R is a hydrocarbon radical. The oxidizing agent is hydrogen peroxide or an organic hydroperoxide, and the catalyst is a palladium catalyst of the formula Pd AA', (L.sub.m) whereA is fluoborate, acetate or trefrafluoroacetateA' is the same as A or is .pi.-allyl,m is 0 or 2, andL is a ligand selected from the amines, the phosphines, the arsines, the stibines and the amides.

Abstract: Process for manufacturing solid catalysts, useful for oxidizing olefins containing from 2 to 16 carbon atoms per molecule to the corresponding carbonyl derivatives, comprising the step of impregnating a carrier with a substantially non-aqueous solution, containing at least two components [A] and [B] of the general formulas:[A]=M.sub.1 X.sub.n L.sub.m[B]=M.sub.2 Z.sub.p L'.sub.qwherein M.sub.1 is rhodium or palladium, X and Z are each an anionic group, n and p are integers selected from 1, 2 and 3, m being an integer selected from 1, 2, 3 and 6 or being O, M.sub.2 is a metal selected from iron, copper, manganese and cobalt, q is an integer selected from 1 to 6 or is equal to O and L and L' are each a coordinate selected from water or an organic compound, said impregnation being conducted in the presence of at least one halogen, a halohydric acid or an organic or inorganic halide.

Abstract: Process for manufacturing solid catalysts, useful for oxidizing olefins containing from 2 to 16 carbon atoms per molecule to the corresponding carbonyl derivatives, comprising the step of impregnating a carrier with a substantially non-aqueous solution, containing at least two components [A] and [B] of the general formulas:[A] = M.sub.1 X.sub.n L.sub.m[B] = M.sub.2 Z.sub.p L'.sub.qwherein M.sub.1 is rhodium or palladium, X and Z are each an anionic group, n and p are integers selected from 1, 2 and 3, m being an integer selected from 1, 2, 3 and 6 or being 0, M.sub.2 is a metal selected from iron, copper, manganese and cobalt, q is an integer selected from 1 to 6 or is equal to 0 and L and L' are each a coordinate selected from water or an organic compound, said impregnation being conducted in the presence of at least one halogen, a halohydric acid or an organic or inorganic halide.