Abstract:
A precision measuring system (1) for industrial machines is disclosed, particularly for numerically-controlled machine tools, particularly for measuring the linear displacement transduction of an object (40) comprising at least one optical system (20) equipped with at least one CCD-type optical sensor (10) adapted to acquire images of the object (40) in time; and acquiring, processing and computing means (30) of video signals (80) generated by the CCD-type optical sensor (10) adapted to determine measure signals (90) representing an amount of a displacement of the object (40). A measuring process using the system (1) is further disclosed.
Abstract:
Semisynthetic analogues of gangliosides selected from the group consisting of N-sulfo-, N-hydrocarbyl-sulfonyl- and N-hydrocarbyloxy-sulfonyl-N,N'-dilyso-gangliosides and the N'-acyl derivatives thereof, N'-sulfo-, N'-hydrocarbylsulfonyl- and N'-hydrocarbyloxy-sulfonyl-N,N'-dilyso-gangliosides and the N-acyl derivatives thereof, N,N'-di or polysulfo-N,N'-di- or poly-lyso-gangliosides, N,N'-di- or polyhydrocarbylsulfonyl-N,N'-di- or poly-lyso-gangliosides and N,N'-di- or polyhydrocarbyloxy-N,N'-di- or poly-lyso-gangliosides, and functional derivatives thereof, and salts of these compounds, have protective activity against neurotoxicity induced by excitatory amino acids and are foreseen to be used in therapy in the nervous system and in modulating of the expression of determinants such as CD4 on the surface of human cells in the immune system.
Abstract:
A phospholipid mixture in which the biological and pharmacological properties are maintained but from which unconventional viruses causing e.g. bovine spongiform encephalopathy are selectively eliminated may be prepared by extraction of phospholipids from bovine brain by a mixture of organic solvents of which one is a chlorinated hydrocarbon or by silica gel chromatography with elution with a succession of eluents consisting of chloroform, lower alcohols and water, or by a combination of extraction and silica gel chromatography. Purified phospholipids can be used in pharmaceutical compositions.
Abstract:
Pharmaceutical compositions containing monosialoganglioside derivatives suitable for the treatment of spinal cord injury caused by hypoxic-ischaemic or traumatic events, in which said derivatives are selected from the group consisting of the inner ester (AGF2) and the methyl ester (AGF4) of the monosialoganglioside (GM1).
Abstract:
The process of the invention relates to a process for the preparation of a ganglioside mixture, free from contaminants associated with non-conventional, life-threatening viruses, without altering the biological and pharmacological characteristics of the mixture on the central and peripheral nervous systems.
Abstract:
Inter and/or intramolecular cross-linked esters of acid polysaccharides are disclosed in which a part or all of the carboxy groups are esterified with hydroxyl groups of the same molecule and/or of different molecules of the acid polysaccharide. These inner cross-linked esters of polysaccharide acids are useful in the field of biodegradable plastic materials, to manufacture sanitary and surgical articles, in the cosmetic and pharmaceutical fields, in the food industry and in many other industrial fields.
Abstract:
A machine tool has a substantially straight guide element (2) extending along a first axis (A1); two carriages (3, 4), which are arranged at a fixed distance (D) from one another along the guide element (2) and are capable of sliding together along the guide element (2); a slide (5), which is interposed between the two carriages (3, 4), is carried by the two carriages (3, 4) and can slide relative to them along a second axis (A2) perpendicular to the first axis (A1); and a milling head (6), which is carried by the slide (5) and is configured to carry a milling tool.
Abstract:
The tool carrying head (1) comprises a first fork-shaped carrying structure (2), having two branches or prongs (2a, 2b) facing each other; a second carrying structure (3), mounted rotatably between the branches (2a, 2b) of the fork-shaped structure (2) about a first axis (A-A) which is essentially orthogonal to the branches or prongs (2a, 2b), and defining an internal through opening (4); a third carrying structure (5) mounted rotatably in the through opening (4) of the second structure (3), about a second axis (B-B) which is orthogonal to the first axis (A-A); and a tool carrying spindle (6) mounted rotatably in the third carrying structure (5) about a third axis (C-C) which is orthogonal to the first and second axes (A-A, B-B).
Abstract:
The system performs control and virtual display (1) for a machine tool (M) which comprises a tool-holder (2) for a tool (T), a carrier (3) for a workpiece (W) to be machined by means of the tool (T), and a plurality of actuator devices (Al,..., AN) which can be controlled by means of associated drivers (D1,..., DN) in order to bring about controlled relative displacements between the tool (T) and the workpiece (W) along respective axes. The control system (1) comprises: a numerical controller (NC) which is connected to the drivers (D1,..., DN) and is suitable for implementing a machining program that is predetermined according to the features of the workpiece (W) to be produced and the features of the tool (T); the numerical controller (NC) is suitable for calculating, on the basis of the machining program, target coordinates defining positions of the tool (T) along the axes, which positions are to be reached by the activation of the associated actuator devices (Al, AN); image display means (ID); and a processing system (P) which is incorporated in and/or connected to the numerical controller (NC) in order to receive the calculated target coordinate values, and which is arranged to generate, on the basis of the target coordinates and of stored mathematical models of the machine (M), of the workpiece and of the tool, image data suitable for producing on the image display means (ID) a predictive, virtual, two-dimensional representation of the positions adopted by the workpiece (W) and by the tool (T) up to a preselected future moment.
Abstract:
Compounds of general formula (I), where Ar = phenyl or beta-naphtyl, R1 = one or more substituents of the phenyl or beta-naphtyl nucleus, preferably in para position, and selected out of the group consisting of H, CH3, C(CH3)3, CH2-CH-(CH3)2, O-CH3, C1, F, Br, CF3, NH2, S-CH3, SO-CH3, CN, NO2; R2 = H, CH3, C2H5, CH(CH3)2, CH2OH, C6H5; R3 = (a); where R4 = H, CH3, C2H5, CH(CH3)2, CH2-C6H5; R5 = H, CH3; X = none O, S, NH, NCH3; Y = O, NH, both in the racemic form and in the isomeric enantiomeric forms, which produce a nootropic effect, i.e. memory enhancement and learning facilitation, as well as an analgesic effect.