Abstract: The present invention provides compounds having the formula: in which R is hydrogen or C1-C4alkyl, preferably hydrogen and Y is hydrogen, C1-C4alkyl, C1-C4alkoxy, CF3, halogen (F, Cl, Br or I) or SO3M in which M is H, Na, K, Ca, Mg, ammonium, mono-, di-, tri- or tetra-C1-C4alkylammonium, mono-, di- or tri-hydroxyalkylammonium or ammonium that is di- or tri-substituted with a mixture of C1-C4alkyl and C1-C4hydroxyalkyl groups; a process for their production; and their use as intermediates in the production of asymmetric or symmetric fluorescent whitening agents.

Abstract: The present invention provides compounds having the formula: ##STR1## in which R is hydrogen or C.sub.1 -C.sub.4 alkyl, preferably hydrogen and Y is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, CF.sub.3, halogen (F, Cl, Br or I) or SO.sub.3 M in which M is H, Na, K, Ca, Mg, ammonium, mono-, di-, tri- or tetra-C.sub.1 -C.sub.4 alkylammonium, mono-, di- or tri-hydroxyalkylammonium or ammonium that is di- or tri-substituted with a mixture of C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 hydroxyalkyl groups; a process for their production; and their use as intermediates in the production of asymmetric or symmetric fluorescent whitening agents.

Abstract: Device (26) to feed reinforcement rods (25), which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the excavation equipment (14) being borne on an excavator machine (10) and being able to rotate by an angle "alpha" from one or the other of two lateral inactive positions (A-B), the device (26) comprising means (27) for connection to the excavation equipment (14), support means (28) that bear means (30) that uphold and lift the reinforcement rods (25), means (32), that draw the reinforcement rods (25) and means (34-35) that guide and align the reinforcement rods (25).

Abstract: A rolling mill assembly (1) for metal sections equipped with a drive assembly (27) comprising means (7) of rotating a pair of shafts (2, 3) each of which supports a rolling mill roll (12, 13) locked between two supports (16, 17), said drive assembly (27) having a front frame (6), said pair of shafts (2, 3) supporting in an axially removable manner said rolls (12, 13) and being supported at both ends by a pair of uprights (4, 5) forming a stand (26), one (5) of the uprights of said pair (4, 5) being designed to be made transiently and frontally integral with said front frame (6), said rotating means (7) being made continuously and coaxially integral with said pair of shafts (2, 3) when the stand (26) is mounted on the drive assembly (27), there being provided eccentric means (8, 8', 8") of containment, guide and positioning of the shafts (2, 3, 7) for center to center distance adjustment of said rolls (12, 13).

Abstract: System for the permanent storage of radioactive wastes (11) and of wastes in general involving a great risk of environmental and human contamination, the radioactive wastes (11) being collected in drums (12) or other suitable means, the drums (12) being capable of being stacked and gathered within containers (13) consisting advantageously of centrifuged concrete, the system arranging that a multi-barrier configuration is interposed between the radioactive source (11) and the surrounding terrain (17), the multiple barriers consisting of concrete structures (13-15-16) and of clay (14-114-214) injected in the liquid state within the concrete structures (13-15-16) so as to fill the whole of the empty interspaces, the clay solidifying into an impermeable plastic agglomerate after being injected.

Abstract: Device (27) to load reinforcement rods, which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the excavation equipment (14) being borne on an excavator machine (10) and being able to rotate by an angle "alpha" from one or the other of two lateral inactive positions (A-B), the excavation equipment (14) comprising a drilling head (19) suitable to cooperate alternately with drilling means (20) and with the rods (25), the device consisting of at least one movable arm means (29) connected (28) to the excavation equipment (14) and lodging shaped movable sector means (32) and shaped clamping means (33), both shaped means (32-33) being connected to second and third actuation means (35-38) for cooperation therewith and with the at least one movable arm means (29) in positioning, clamping and unclamping the drilling means (20) and the reinforcement rods (25), the at least

Abstract: Excavation device (10) with rotary cutter having a horizontal axis, the device (10) having a support structure (11) for excavation means consisting advantageously of pairs of cutter wheels (12-112) able to rotate about their axis (13), the rotation being induced by drive means (15) and suitable transmission means, the cutter wheels (12-112) being equipped with main excavation tools (18), an excavation chain (22) bearing secondary excavation tools (23) being associated with each cutter wheel (12-112) and being actuated by a sprocket wheel (19) firmly secured (20) to the respective cutter wheel (12-112) and cooperating with a transmission means (21) secured to the support structure (11), the secondary excavation tools (23) borne by the excavation chains (22) of each pair of cutter wheels (12-112) covering almost the whole excavation face between the main excavation tools (18).

Abstract: A batching pump for lime concrete comprising a base, a longitudinal displacement feeder attached to said base, at least one evacuator conduit attached to said base, at least one cylinder for receiving at one end thereof lime concrete and pumping lime concrete from said cylinder from said same end to said conduit, pivotal structure to pivotally move said cylinder between said feeder and said conduit, and conduits to feed pressurized gaseous fluid to said cylinder.

Abstract: Telescopic columns for making foundations including in reciprocal coordination and cooperation a motor group comprising at least two guide pulleys having a proportion to each other of one to two; inner and outer movable columns; axially immovable canoe guide means surrounding said columns; a chain secured to the two ends of the outer movable column and driven by the smaller of said pulleys; a chain secured to the lower part of the inner movable column and to the upper part of the axially immovable guide canoe means and driven by the larger pulley; a cable connecting the upper part of the inner movable column to the lower part of the axially immovable guide canoe means and a transmission sheave solidly fixed to the lower part of the outer movable column through which passes said cable.