Described are polyolefinic films exhibiting improved imperviousness to gases and vapors, and being coated, on at least one of their surfaces with an ethylene-vinyl alcohol copolymer layer, said layer having been applied in the form of a hydro-alcoholic solution.

This invention relates to an ink jet recording apparatus comprises an ink jet head (1) having an ink path (4) communicating with a discharge opening (2) for discharging ink; electrodes (7a,7b,7c) arranged in said ink path (4); a residual ink quantity detection means for detecting residual ink quantity in said ink path in accordance with a resistance value, current value or voltage value from said ...

N-Acryloyl anthracycline glycosides having the general formula A: wherein R1 represents a hydrogen atom or a methoxy group; R2 represents a hydrogen atom or a hydroxy group; one of R3 and R4 represents a hydrogen atom, the other of R3 and R4 represents a hydrogen atom or a hydroxy group; R5 represents a hydroxy atom, a halogen atom, a cyano or a nitro group, are useful as antitumor agent...

Gamma-butyrolactone is produced by catalytic hydrogenation of maleic anhydride in the vapour phase in the presence of catalysts based on copper chromite in reduced form, the reaction being carried out with the aid of an essentially uniform catalyst essentially derived from the 3 components copper oxide, chromium oxide and silicon dioxide. The ratio of CuO to Cr2O3 to SiO2 is preferably approximate...

Process for Producing Gamma-butyrolactone Gamma-butyrolactone is produced by catalytic hydrogenation of maleic anhydride in the vapor phase in the presence of catalysts on the basis of copper chromite in reduced form. The reaction is carried out using a substantially uniform catalyst derived substantially from the 3 components cupric oxide, chromic oxide, and silicon dioxide. The ratio of CuO to C...

A solid catalyst, for ethylene (co)polymerisation consists of (1) a Si02 support in particle form (50-90 wt. %) and (2) an active part (50-10 wt. %) contg. Ti, Mg, Cl and alkoxy gps. Prepn. of the catalyst comprises (a) prepn. of MgCl2 soln. in C2H5OH, (b) impregnation of Si02 particles by suspension in the soln. (c) elimination of unabsorbed C2H5OH by evapn. at up to 60 deg.C (no higher) and reco...

The device includes a first and a second optical circulator (C1, C2) having an input port and an output port that are the inputs and the outputs of the switch, as well as an optical bandpass filter (FP) placed between the two circulators (C1,C2) and connected with means for switching its state so that the filter either reflects or transmits a given wavelength, thus allowing a carrier with this wav...

The device includes a first optical circulator (C1) connected in series with the line (1e, 1u) in order to receive a signal stream including a carrier to be extracted, modulated by an information signal, and to transmit a signal stream including the same carrier, re-inserted into the stream after having being modulated with another information signal, and a second optical circulator (C2) connected...

Per la produzione di falde di fibre vengono utilizzati un convenzionale tamburo cardatore (1) ed una superficie aspirante d'intercettazione (2) mobile in modo continuo, per la raccolta delle fibre che prendono il volo dal tamburo cardatore (1). Per assicurare condizioni vantaggiose di trasporto delle fibre sulla loro traiettoria in volo, il velo di fibre formato sul tamburo cardatore (1) viene asp...

High density compacts are made by providing a compactable particulate combination of Class 1 metals selected from at least one of Ag, Cu and Al, with material selected from at least one of CdO, SnO, SnO2, C, Co, Ni, Fe, Cr, Cr3C2, Cr7C3, W, WC, W2C, WB, Mo, Mo2C, MoB, Mo2B, TiC, TiN, TiB2, Si, SiC, Si3N4, usually by mixing powders of each, step (1); uniaxially pressing the powders to a density of ...

The plane lapping machine has a workpiece carries ring (5), which together with workpiece carriers (6) slowly rotates on the lapping wheel (2) about a centre (8) which is eccentric to the lapping wheel centre (3). The eccentricity is chosen so that the whole of the wheel face is traversed during lapping; also there is a sector where the workpiece carriers are clear of the lapping wheel. The work...

Un metodo per raccogliere un nastro in un recipiente in modo che la sua porzione terminale posteriore possa venire individuata con facilità quando esso viene usato successivamente. Il metodo comprende le operazioni di muovere il nastro nel senso circonferenziale del recipiente ed in modo che il nastro possa formare cerchi che sono di diametro minore di quello del recipiente, finché i cerchi forman...

A beam support system fastens an end portion of a wood beam to a generally upright surface of a beam-anchoring member. A mutually-cooperative interface structure is provided on a beam-fastening member and on the end portion of the beam, respectively. The interface structure forces the end portion compressively against the upright surface in a direction generally perpendicular thereto automatically...

A control method/system for controlling upshifting in an automated mechanical transmission system (10) provided with an engine compression brake (50) is provided. A control unit (54) is effective to operate the engine compression brake during a transmission upshift such that at initiation of an upshift the engine compression brake applies a minimum retarding torque to said engine, said retarding t...

Metodo per la tempra induttiva di superfici (7, 8) di scorrimento e raggi di raccordo su alberi a gomito (4), sui quali i perni di manovella (5, 6) per l'alloggiamento delle bielle sono disposti in diretta successione con differente posizione angolare su piani perpendicolari rispetto all'asse di rotazione, in cui gli induttori (1) adiacenti fra di loro sono accostati dallo stesso lato ai perni di ...

The invention concerns a torch, particularly indicated for automatic electric wire welding machines, suitable for welding in cramped spaces, on pieces arranged on planes which can even be parallel to it, and inside deep cavities on articles with small transverse dimensions, comprising a wire support shaft, electrically insulated, for the passage of the wire guide sheath and any cooling fluid pipin...

The method for producing a metal plate laminated with a polyester film, for the production of cans having a good resistance to the milky modification following a treatment in the oven after the introduction of foods and beverages, consists in controlling, in an optimal field, the relative ratio of density and the residual degree of biaxial orientation of a laminated film of polyester resin of biax...

The device includes a first and a second optical circulator (C1, C2) having an input port and an output port that are the inputs and the outputs of the switch, as well as an optical bandpass filter (FP) placed between the two circulators (C1,C2) and connected with means for switching its state so that the filter either reflects or transmits a given wavelength, thus allowing a carrier with this wav...

The device includes a first optical circulator (C1) connected in series with the line (1e, 1u) in order to receive a signal stream including a carrier to be extracted, modulated by an information signal, and to transmit a signal stream including the same carrier, re-inserted into the stream after having being modulated with another information signal, and a second optical circulator (C2) connected...

An ignition coil, of the plug-top type with reduced lateral size, is intended for use in multi-valve engines. The coil comprises a core (2) made of sheet metal wound in an elongate shape on which the spools (4, 20) of the secondary and primary windings respectively are fitted.