Abstract: An apparatus for detecting energy and point of incidence of an ionizing event comprising a semiconductor layer with a first type of conductivity, in which at least one first doped region with the first type of conductivity and a corresponding plurality of second doped regions with a second type of conductivity associated to said at least one first doped region are formed on a first surface of said layer, said at least first doped region and said corresponding plurality of second doped regions defining a respective drift path for charge carriers with the first type of conductivity, and at least one third doped region with the second type of conductivity is formed on a second surface of said layer, and means for biasing said second doped regions and said third doped region which is capable of reversely biasing the junctions between the second doped regions and the semiconductor layer and between the third doped region and the semiconductor layer so as to deplete the semiconductor layer.

Abstract: Block copolyethers having general formula (I):RX--(CH.sub.2 --CHR.sub.1 --O--).sub.x --(--CH.sub.2 CHR.sub.2 --O--).sub.y --(--CH.sub.2 --CHR.sub.3 --O--).sub.z --R.sub.4wherein:R is selected from H, alkyl, alkylaryl;X is selected from O, S and N;R.sub.1, R.sub.2 and R.sub.3 are selected from H, CH.sub.3, and C.sub.2 -C.sub.10 alkyl radicals;R.sub.4 is selected from H, alkyl, acyl;x,y,z represent the number of ether units and are integers which have such values that the molecular weight of the compound having general formula (I) is between 600 and 4000, and in addition (x+z)/y is between 1.5 and 5.0; with the proviso that:a) either R.sub.1 and R.sub.3 are selected from H and CH.sub.3, in which case R.sub.2 is selected from C.sub.2 to C.sub.10 alkyl radicals,b) or R.sub.1 and R.sub.3 are selected from C.sub.2 -C.sub.10 alkyl radicals, in which case R.sub.2 is selected from H and CH.sub.3.

Abstract: Fuel composition for internal combustion engines which comprises a larger portion of fuel and a smaller quantity of a composition of hydrocarbon oligomers almost totally saturated, characterized in that the above composition of almost totally saturated hydrocarbon oligomers: 1) is obtained by the oligomerization and subsequent hydrogenation of a hydrocarbon composition comprising basically C.sub.13 -C.sub.18, preferably C.sub.15 -C.sub.16, internal oligomers, in a quantity of more than 90% by weight, 2) is basically without any possible hydrocarbons having a number of carbon atoms equal to or less than 13, 3) has a viscosity at 100.degree. C. of betweem 5.0 and 12.0 cSt, particularly from 7.3 to 8.4 cSt.

Abstract: Detergent additive for liquid fuels, obtained by means of the trans-esterification of a tertiary amine bearing at least two hydroxy functions, with a dialkyl carbonate and a higher aliphatic alcohol, and process for preparing said detergent additive.

Abstract: A semiconductor charge transport device and method for making same, characterized by providing a thin semiconductor wafer having rectifying junctions on its opposing major surfaces and including a small capacitance ohmic contact, in combination with bias voltage means and associated circuit means for applying a predetermined voltage to effectively deplete the wafer in regions thereof between the rectifying junctions and the ohmic contact. A charge transport device of the invention is usable as a drift chamber, a low capacitance detector, or a charge coupled device each constructed according to the methods of the invention for making such devices. Detectors constructed according to the principles of the invention are characterized by having significantly higher particle position indicating resolution than is attainable with prior art detectors, while at the same time requiring substantially fewer readout channels to realize such high resolution.