Abstract: Displacement transducer device, adapted to be coupled to reference points of a structure, includes a first element integrally securable to a first reference point of the structure, first and second magnets arranged so as to magnetically repel one another, a transducer arranged proximate the first and second magnets so as to detect a variation in the magnetic field between the first and second magnet and to convert the variation into a signal processed by a processing unit, the displacement transducer device includes a second element integrally securable to a second reference point of the structure, and one of the first or second magnet or transducer being connected to the first element and the remaining elements of the first or second magnet or transducer being connected to the second element such that a relative movement of the first or the second reference point causes a variation in the magnetic field.

Abstract: Sensor device (1) for monitoring structural elements, comprising a container (4), which is preferably box-shaped and has a first elastic modulus (E1), a processing device (11), which is housed inside the container (4) and comprises a processing unit (11a), a support (12) on which the processing unit (11a) is installed, at least one inclinometer (3) and/or one accelerometer (15), which is/are housed on the support (12) and operatively connected to the processing unit (11a), the support (12) being secured to the container (4) by means of a fixing element (12a) having a second elastic modulus (E2) that is greater than or equal to the first elastic modulus (E1).

Abstract: Support for decks (3) of bridges, viaducts and the like, comprising a first and a second surface (6, 7), for the application and countering of a load, respectively, which can slide relatively and an anti-friction bearing (8) arranged between said surfaces (6, 7), the bearing (8) comprising at least one electrical contact (11) which is embedded therein at a predetermined distance from at least one of said opposing sides (9, 10) and can close or open an alarm circuit (15) as a result of predetermined wear and tear of said bearing (8).

Abstract: Displacement transducer device, adapted to be coupled to reference points of a structure, includes a first element integrally securable to a first reference point of the structure, first and second magnets arranged so as to magnetically repel one another, a transducer arranged proximate the first and second magnets so as to detect a variation in the magnetic field between the first and second magnet and to convert the variation into a signal processed by a processing unit, the displacement transducer device includes a second element integrally securable to a second reference point of the structure, and one of the first or second magnet or transducer being connected to the first element and the remaining elements of the first or second magnet or transducer being connected to the second element such that a relative movement of the first or the second reference point causes a variation in the magnetic field.

Abstract: Inclinometer device (1), monitoring system (100) and method associated therewith for monitoring bonded elements comprising a flexible tape (2), at least one inclinometer (3) housed on or in the tape (2).

Abstract: Pre-cast segment for a reinforced concrete tunnel includes an arcuate structure having reinforcement and a cement agglomerate to cover structurally repeated annular tunnel. The arcuate structure includes respective opposite radial faces that lie on planes that are angularly spaced apart from one another and passing through a longitudinal axis of the tunnel. The radial faces configured to be moved towards respective radial faces of adjacent segments in order to form an annular tunnel portion, the circumferential faces configured to be moved towards respective circumferential faces of adjacent segments in order to form a linear extent of said tunnel along the longitudinal axis and an outer longitudinal face being at a greater distance than an inner longitudinal face from said longitudinal axis, is placed in contact with the ground, at least one investigation device is embedded in the arcuate structure to detect predetermined structural parameters.

Abstract: A process for preparing bituminous mixtures with added thermoplastic polymer is described, the mixtures having storage stability and improved general properties.The process consists of treating the bitumen-polymer mixtures with an unsaturated dicarboxylic aliphatic acid or with the relative anhydride.

Abstract: Organic esters, to be employed to make up lubricating compositions are disclosed, said esters being the products of the reaction between a diol and a triol, on the one hand, and a mixture of saturated monocarboxylic acids, on the other hand. The ratios of the diol to the triol (molarly) and the structure and number of carbon atoms of the saturated monocarboxylic acids are critical. Critical values are given, as well as examples of practical use; the viscosity and viscosity index properties of the novel esters out do those of the conventional esters to a degree.

Abstract: An ester, adapted for use as a component of a multigrade lubricating oil, is prepared by reacting:A. A mixture of bifunctional and trifunctional polyols wherein the molar ratio of the bifunctional polyols to the trifunctional polyols is in the range of 1:2.5 to 1:10; andB. A mixture of linear monocarboxylic acids containing from 6 to 8 carbon atoms, wherein the molar average is C.sub.7, and of linear monocarboxylic acids containing from 12 to 18 carbon atoms, the molar ratio of the C.sub.6 to C.sub.8 acids and the C.sub.12 to C.sub.18 acids being in the range of from 4:1 to 19:1.

Abstract: This invention relates to esters prepared by reactingA. a mixture of tri-, tetra- and hexafunctional polyols in which the molar ratio of the trifunctional polyol to the other polyols is from about 0.5:1 to 10:1 and in which the molar ratio of the hexafunctional polyol to the tetrafunctional polyol is from about 0 to 1.2:1, andB. a mixtue of linear alkyl monocarboxylic acids comprised of (i) one or more acids having from 7 to 8 carbon atoms and (ii) one or more acids having from 12 to 18 carbon atoms, the molar ratio of the acids (i) to the acids (ii) being from about 1.5:1 to 6:1.The invention also relates to lubricating compositions comprised of the esters.