Abstract: compression and search process on a data set based on multiple strategies, including extracting a set of raw data and transforming it into a sequence of symbols, manipulating the sequence by combining data structures and one or more (optionally a multiplicity of) compression strategies to obtain compressed and efficiently searchable data, recording the compressed and efficiently searchable data on storage media.

Abstract: A positive displacement machine comprises a cylinder inside which there are a mobile piston, at least one first and one second insulation chamber containing a respective set of gaskets, at least one first and one second gland each of which is suitable for operating on one of the sets of gaskets, each gland comprising a tubular threaded portion and a ring nut fixedly attached to the tubular threaded portion. A sleeve able to slide with respect to said cylinder has a first end in contact with the first set of gaskets and a second threaded end for receiving in engagement the tubular threaded portion of the second gland, the sleeve being slidingly engaged by the first gland, and at least one of the ring nuts being a cylindrical gear wheel with straight teeth.

Abstract: A positive displacement machine comprises a cylinder inside which there are a mobile piston, at least one first and one second insulation chamber containing a respective set of gaskets, at least one first and one second gland each of which is suitable for operating on one of the sets of gaskets, each gland comprising a tubular threaded portion and a ring nut fixedly attached to the tubular threaded portion. A sleeve able to slide with respect to said cylinder has a first end in contact with the first set of gaskets and a second threaded end for receiving in engagement the tubular threaded portion of the second gland, the sleeve being slidingly engaged by the first gland, and at least one of the ring nuts being a cylindrical gear wheel with straight teeth.

Abstract: A device (1) for the adjustment of a gland nut (2), provided with a plurality of gripping means (8) through which said gland nut (2) can be caused to rotate, comprising an engaging member (3) and actuator means (25, 26) to cause the engaging member (3) to effect a working movement from a first position to a second position. The engaging member (3) is capable of effecting one-way engagement with the gripping means (8) to rotate the gland nut (2) through a predetermined angle (?) in the working movement from the first position to the second position.

Abstract: A reciprocating pump (1) comprises a plurality of reciprocating pistons (2a, 2b, 2c) extending along respective longitudinal axes (X-X) parallel to each other and lying in a plane (?), a plurality of pumping work chambers (5a, 5b, 5c), and a plurality of diaphragms (7a, 7b, 7c), each arranged in a respective pumping work chamber (5a, 5b, 5c). In particular, the diaphragms (7a, 7b, 7c) are arranged coplanar in a plane (?) perpendicular to the axes (X-X) of the reciprocating pistons (2a, 2b, 2c), and the diaphragm of at least one reciprocating piston is offset with respect to the diaphragm of the adjacent reciprocating piston, in the direction (Y-Y) perpendicular to the plane (?) defined by the axes (X-X) of the reciprocating pistons (2a, 2b, 2c).

Abstract: A device (1) for the adjustment of a gland nut (2), provided with a plurality of gripping means (8) through which said gland nut (2) can be caused to rotate, comprising an engaging member (3) and actuator means (25, 26) to cause the engaging member (3) to effect a working movement from a first position to a second position. The engaging member (3) is capable of effecting one-way engagement with the gripping means (8) to rotate the gland nut (2) through a predetermined angle (?) in the working movement from the first position to the second position.