Abstract: The preparation of a total extract of leaves and flowers of appropriate Crataegus species is described as well as three new fractions of said total extract and their use as pharmaceutical compositions for preventing sudden death due the cardiac arrest and reperfusion-caused cardiovascular lesions and other reperfusion-caused life-threatening pathological conditions.

Abstract: A counter flow combustor for regenerative open cycle turbine systems has an outer casing defining a head cavity at one end, an inner casing mounting in said outer casing, said inner casing defining a combustion chamber. An annular insulated partition and support means is connected at its upper end to the inner wall of the outer casing and at its lower end to the discharge outlet end of the inner casing, said inner casing including a cooling and metering wall assembly about the secondary combustion zone having cooling means communicating at one end with a head cavity extension space and at the other end with the secondary combustion zone for delivering heated combustion air thereto and support means on the insulated partition and support means operatively connected to the cooling and metering wall assembly to hold the same in assembled position in the combustor.

Abstract: A counter flow combustor has a generally elongated hollow cylindrical outer casing or shell with a closure means at the upper end defining a head space and a generally elongated smaller hollow annular inner casing or combustion wall mounted therein in spaced relation to the outer casing to form an annular head space extension between the side walls of the outer casing and the inner casing which is continuous with the head space. The inner casing or combustion wall defines a primary combustion zone, and a secondary combustion zone in communication at one end with the primary combustion zone and at the end remote therefrom with the discharge outlet for delivering combustion gases from the combustor. An inlet assembly is mounted in said head space for mixing fuel and air and for delivering the same in proper ratio for combustion in said primary combustion zone and secondary combustion zone.

Abstract: Disclosed is an assembly for the damping of flexural and torsional vibration in the shafts of machines, for instance in the spindles of machine tools, wherein said spindle or shaft between two bearings thereof is surrounded by a bending resistant sleeve or tube with a clearance defined between both parts, which sleeve rotates with said shaft, whereby the clearance gap is filled with a damping viscous medium, preferably lubricating oil.