摘要:
The pallet changing system comprises a pallet deposition and pick-up station and a pallet loading and unloading station, horizontally spaced from one another along a first horizontal direction (A-A), as well as a pallet handling unit. The pallet handling unit includes: horizontal guide means extending along the first horizontal direction (A-A) between the pallet deposition and pick-up station and the pallet loading and unloading station; a pair of motorized uprights, which are jointly movable in a controlled manner in the first horizontal direction (A-A) between the pallet deposition and pick-up station and the pallet loading and unloading station, each upright being provided with a respective motorized lifting carriage vertically movable in a controlled manner, each lifting carriage being provided with a pair of gripping devices which are horizontally spaced from one another and selectively or jointly controllable to engage a corresponding end of a pallet (P) so as to allow rotation of the pallet (P) about a first horizontal axis; a pair of motorized auxiliary carriages, which are jointly movable in the first horizontal direction (A-A) between the pallet deposition and pick-up station and the pallet loading and unloading station, and are provided each with a gripping device arranged to engage a corresponding end of the pallet (P) facing the pallet deposition and pick-up station, so as to allow rotation of the pallet (P) about the first horizontal axis; and a motorized transporting carriage which is arranged to transport, in a vertical attitude, the pallet (P) with the workpiece (WP) connected thereto, and is movable between the pallet loading and unloading station and a working area (SW) of the machine tool (MT) in a second horizontal direction (B-B) forming an angle with respect to the first horizontal direction (A-A).
摘要:
A method of determining a positioning error of a CNC machine is provided and an system thereof. A calibration element is placed within the CNC machine. A first sensor reading is taken of the calibration element. A second sensor reading is taken and the sensor is moved in a manner that the difference between the first and second sensor data decreases until the difference becomes less or equal to a pre-determined threshold value. A positioning error of the tool head is determined based on the movement of the sensor.
摘要:
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 CD.sub.4 on the surface of human cells in the immune system.
摘要:
The present invention is drawn to hyaluronic acid fractions having molecular weights in the range of from about 20,000 to about 60,000 daltons, wherein these hyaluronic acid fractions possess osteoinductive activity. The present invention further includes pharmaceutical compositions comprising such hyaluronic acid fractions to be used in the treatment of various types of bone disorders, as well as methods of treating such disorders using the pharmaceutical compositions.
摘要:
This invention provides new gels in the form of highly hydrated self-supporting film, comprising one or more alkaline alginates, an alkaline earth alginate, a polyalcohol and a hyaluronic acid or a derivative thereof, and their preparation process. These polysaccharide-matrix gels in highly hydrated self-supporting film form are suitable for use as covering and protection materials for cutaneous lesions and/or pathologies in that they are obtainable in self-supporting form in the desired thickness, are transparent, flexible, have good mechanical characteristics, are adaptable to the lesion surface without strongly adhering to it, and are permeable to gas but are impermeable to liquids and bacteria; one or more pharmacologically active substances can also be incorporated in the gel.
摘要:
Compounds of general formula: ##STR1## where: Ar=phenyl or beta-naphtyl, or aromatic heterocyclic 6-membered ring containing one or two nitrogen atoms;R.sub.1 =one or more substituents of the Ar nucleus, preferably in para position, and selected out of the group consisting of H, CH.sub.3, CH.sub.2 --CH--(CH.sub.3).sub.2, O--CH.sub.3, Cl, F, Br, CF.sub.3, NH.sub.2, S--CH.sub.3, CN, NO.sub.2 R.sub.2 =H, CH.sub.3, C.sub.2 H.sub.5, CH(CH.sub.3).sub.2 ;R.sub.3 = ##STR2## Where R.sub.4 =H, CH.sub.3, C.sub.2 H.sub.5 R.sub.5 =H, CH.sub.3X=none O, S, NH, NCH.sub.3, --CH=CH--, --C.ident.C--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.
摘要:
Partial esters of alginic acid and salts thereof possess important bioplastic and pharmaceutical qualities and are useful in various fields including medical, surgical, cosmetics and foods.
摘要:
New carnitine derivatives are described having the formula (I): ##STR1## wherein A=H, --(CH.sub.2).sub.n --O--CO--R.sub.1, n being 1 or 2, and B=--(CH.sub.2).sub.m --O--CO--R.sub.2, m being 1, 2, 3, or 4 with the limitation that when A=--(CH.sub.2).sub.n --O--CO--R.sub.1, m is 1 or 2, and in which R.sub.1 and R.sub.2, equal or different are radicals of aliphatic, aromatic, araliphatic, alicyclic or heterocyclic acids.The process for preparing said derivatives is also described and their use in the therapy of human pathologies associated with neuronal damages.
摘要:
Kynurenic acid derivatives useful as therapeutic agents in treating neurological disorders, for example, thiokynurenic acid, 7-chloro-thio-kynurenic acid, 7-trifluoromethyl-thiokynurenic acid, 7-methoxy-thiokynurenic acid and 5-fluoro-thiokynurenic acid.
摘要:
An agent for prevention or prophylaxis of general toxic effects or chronic neurotoxic effects which are caused by the administration of antineoplastic agents, which is to be given to patients prior to administration of said antineoplastic agents and which comprises as an active ingredient a mixture of gangliosides GM.sub.1, GD.sub.1a, GD.sub.1b and GT.sub.1b.