Abstract: The controlled release units of the present invention are capable of maintaining the drug/s sustained release properties along the gastro-intestinal tract without losing their mechanical resistance induced by the in vivo peristalsis. The formulations object of the present invention are based on a matrix consisting in a glyceryl ester in combination with ethers of cellulose. Such a matrix composition further incorporates the drug/s. The matrix units of the present invention may be obtained by known granulation methods or by direct compression according to the rheological properties of the drug/s. The drug release profile in vitro matches very well with release in vivo, i.e. the controlled release matrix is not damaged by in vivo peristalsis. The present compositions show good drug release properties, even at very early stages after administration, and ensure a constant and complete release of drug within acceptable times.

Abstract: Road safety barrier includes a resistant part and one or two dampening parts for a lateral barrier or a traffic divider respectively. The resistant part of the wall type barrier may be rigidly connected to steel plates which are equally spaced and have been specifically conceived for increasing the resistance during an impact caused by a heavy vehicle. The plates have a slot for the passage of ductile screw anchors, allowing the initial displacement of the resistant part and its connection to the support. If provided, the ductile anchor parts are covered by the dampening part.

Abstract: A safety barrier for roads, used as a traffic divider, includes a double row of concrete made New Jersey barrier elements which allow the realization of a hedge on earth interposed between the barrier elements. The earth is contained in a sack made of nonwoven fabric, fixed, to both barrier elements, so as to leave gaps behind the rear walls of the barrier elements. The gaps together with a plurality of sliders or runners provided on the barrier's base, allow during impact a controlled displacement of the barrier elements. The calibration of decelerations is adjusted by the material used for the sliders.

Abstract: Light guardrail for bridges formed by a plurality of uprights (1, 2) made of sheet steel and having a box-like shape. The uprights are individually fixed by means of screw anchors (4) to a support (5) made of concrete (Kerbstone of the viaduct or foundation for the lateral edge on an embankment). The uprights (1, 2) are covered by a cover sheet steel (7) formed by a shaped sheet steel having at New Jersey profile, which partially has at form complementary to the profile of the uprights (1, 2). The individual uprights (1, 2) are connected to each other by means of steel pines (26, 27) fixed on the rear side of the uprights.