Compounds of formula I in which X is an iodine or bromine atom, R is a hydrogen atom, an acetyl, methoxyacetyl or trifluoro- acetyl group, m is an integer from 0 to 2, n is an integer from 0 to 4, the sum m + n being at least equal to 2, A1 and A2 independently of each other denote an aminoalcohol residue. These compounds can be employed in opacifyi...

There is disclosed a process for purification of waste waters accumulating from the production of pulp, particularly from chlorine bleaching of pulp, which comprises the combination of the following steps: (a) release of solid particles from the waste water in a series-connected, mechanical purification stage, (b) introduction of the pre-cleaned waste water into an electrolysis installation, where...

A nuclear fuel assembly has fuel rods connected to the lower end plate of the assembly. The connecting structure comprises an attachment plate which is superimposed on the lower end plate and which is formed with openings corresponding to the rods. The openings lead out into parallel grooves machined on the lower surface of the plate. Each rod comprises a lower part having three radial branches at...

The invention relates to a fuel assembly with cooled guide tubes for a nuclear reactor. It consists of a bundle of parallel fuel tubes (1) held in a structure comprising spacer grids, guide tubes (6) and end plates. At least a part of the guide tubes (10) comprises a set of guiding surfaces (16) projecting towards the interior of the tubes (10) over the whole of their length. The projections (16) ...

A nuclear fuel assembly has fuel rods connected to the lower end plate of the assembly. The connecting structure comprises an attachment plate which is superimposed on the lower end plate and which is formed with openings corresponding to the rods. The openings lead out into parallel grooves machined on the lower surface of the plate. Each rod comprises a lower part having three radial branches at...

The invention relates to a fuel assembly with cooled guide tubes for a nuclear reactor. It consists of a bundle of parallel fuel tubes (1) held in a structure comprising spacer grids, guide tubes (6) and end plates. At least a part of the guide tubes (10) comprises a set of guiding surfaces (16) projecting towards the interior of the tubes (10) over the whole of their length. The projections (16) ...

The combined mould, packing and refill casing is for lipsticks which fit into a holder, with an axially movable cup. The casing comprises a socket open at one end and made of transparent material. Its inner shape corresponds to that of the lipstick, and its open end has a collar. The inner dia. of the collar corresponds to the outer dia. of the stick holder upper end part and to that external of a...

This invention concerns a process and apparatus for fibration of a mass of fluff, by dividing the mass in two in a series of dividing devices (11, 15). In the first divider (11) free standing fibres are separated in a tangle separator (14) from the non-fibrated material and diverted past the second divider (15), while the non-fibrated material in the first divider (11) is allowed to pass through ...

A method and a system are disclosed for measuring the baseline vector b between a pair of survey marks on the ground by radio interferometry using radio signals broadcast from the earth orbiting satellites of the NAVSTAR Global Positioning System (GPS), the radio signals broadcast by the satellites being double-sideband modulated with their carriers suppressed. An antenna is positioned at each sur...

A method and a system are disclosed for measuring the baseline vector b between a pair of survey marks on the ground by radio interferometry using radio signals broadcast from the earth orbiting satellites of the NAVSTAR Global Positioning System (GPS), the radio signals broadcast by the satellites being double-sideband modulated with their carriers suppressed. An antenna is positioned at each sur...