Method for manufacturing a compound pipe the wall of which comprises an inner layer (23) of a first material and an outer layer (24) of a second material. Powders (13,14) of the two materials are isostatically hot pressed to form a cylindrical tubular blank (15) in which the first material (13) forms an inner layer and the second material (14) forms an outer layer, the blank after heating to a sui...

To repair or join sections of a metal article, matching metal powder is sintered in the solid state to form a porous structure in the joint. A layer of matching powder, modified to incorporate melting point depressants such as boron and silicon is subsequently added to the surface of the sintered region. The joint is processed at a temperature where the modified layer melts while the sintered laye...

A tyre mould includes a surface covering 5 covering, at least in part, some of the moulding surfaces 10 and 20, the structure of which is porous, having partly open porosity in order to ensure venting of the mould.

An apparatus and method for supplying a graphic label that is readable with a light scanning device with such label placed on a rubber article. The graphic bar code label is optically interpreted with a bar code reader. Thus, the cured substrate with the label with the graphic message is produced by using thermal transfer techniques. For this purpose, the ribbon in contact with the substrate passe...

The method and the device for checking the bead 2 of a product forming a seal, which product is delivered onto a surface 3, along a predetermined path, via the end of a nozzle 1 placed above the surface, are such that the freshly deposited fraction of the bead 2 is illuminated, behind the nozzle 1 with respect to its direction of movement A, by a light beam output by a tubular bundle 17 of optical...

The method and apparatus of this invention for evaluation of a semiconductor production process effect the determination of the shallow pit density of a silicon wafer by predetermining the correlation between the average shallow pit density on a wafer surface obtained by microscopic observation and the average magnitude of a scattered light on the wafer surface obtained by the determination with t...

Ground polymer elastomer or other polymeric plastic, particularly from recovered scrap, is surface modified by treatment with a gaseous mixture containing a minor amount of fluorine and a larger amount of at least one reactive gas in an inert gaseous carrier. By the treatment the ground material is made more compatible for admixture with polyfunctional polymer-forming liquids, thereby obtaining no...

DNA strand having an ability in biotechnological production of alpha -acetolactate decarboxylase is disclosed. The DNA strand is characterized in that it has a nucleotide sequence coding for a polypeptide whose amino acid sequence is substantially from A to B of Fig. 1 and which has alpha -acetolactate decarboxcylase activity. Also disclosed is a yeast which belongs to Saccharomyces cerevisiae a...

Polyurethane foam of low thermal conductivity is prepared by employing carbon dioxide as a blowing agent, preferably in combination with a halogenated compound, typically a halocarbon or halohydrocarbon such as monofluorotrichloromethane or 1,1-dichloro-1-fluoroethane, and incorporating in the foam a carbon dioxide-reactive reagent. Sodium hydroxide and soda lime are illustrative carbon dioxide-re...

1. Process for carrying out a combined gas turbine/steam turbine process in which the gas turbine process is carried out by means of a fuel gas which has been obtained from solid carbonaceous material and subsequently de-sulphurated, and the steam turbine process is carried out by means of the steam obtained upon combustion of the carbonaceous gasification residue, and in which the combustion of t...

PURPOSE:To reduce a parasitic capacity between an Si substrate and a wiring electrode by a method wherein an insulating film is selectively formed on the Si substrate and the wiring electrode is formed n a GaAs layer region laminated on the insulating film. CONSTITUTION:An SiO2 film 2 is grown on the whole surface of an Si substrate 1 by a CVD method and the SiO2 film 2 at the programming region f...

PURPOSE:To form a fine patten of a thin film superconductor on a substrate and to eliminate restriction to use a crystal substrate, by forming a pattern of a buffer layer which is crystallized through laser beam irradiation corresponding to a desired electric circuit and to carry out selective crystal growth of a super conductor thereon. CONSTITUTION:A thin film of, for instance, Al2O3 is formed o...

A coupling for transmitting torque between two parts has a friction coupling with a chamber including a piston and a rotational member. A pumping and control member is positioned in the chamber and includes at least one shear channel. The pumping and control member is rotatable between two positions such that viscous fluid moves through the channel to load the coupling.

A negotiated matching system includes a plurality of remote terminals associated with respective potential counterparties, a communications network for permitting communication between the remote terminals, and a matching station. Each user enters trading information and ranking information into his or her remote terminal. The matching station then uses the trading and ranking information from eac...

A control method/system for controlling throttle recovery in a vehicular automated transmission system (10) including an electronically cnotrolled engine (14) having an engine controller (ECUE) generating a signal indicative of an optimal engine fueling value (54). During throttle recovery, fueling is commanded to continuously decrease the difference (58) between current engine fueling (56) and th...

A control system and method for a vehicular semi-automatic mechanical transmission system (10) having a clutch operator (30) and an overriding manual clutch control (3) for controlling engagement and disengagement of the master clutch (14) is provided. The control is effective to sense manual clutch disengagement during a downshift and to cease further attempts to cause synchronization by engine f...

A radioactive source is housed within a container (102) which has a threaded extension (106) at one end for mounting the container within a passage in a borehole logging tool. The container (102) has a bayonet (110) at its other end for engagement with the bayonet connection (124) of a handling tool (112) for inserting the container (102) into the passage. The handling tool (112) comprises a rod (...

A method of determining a depth correction for a logging tool 1 that is moved, while suspended from a cable 11, along a well 2, the method being of the type in which a measurement of tool depth is performed at the surface at successive instants (by counting pulses associated with winding of the cable), the tool comprising at least two sensors suitable for measuring a characteristic of the well at ...

A film combination comprising a) an oriented polymeric substrate which either i) comprises an intimate blend of polypropylene with maleic acid anhydride modified polypropylen or ii) is otherwise susceptible of transmitting oxygen and water vapor and has a primer coating on at least one surface; b) a layer of cross-linked polyvinyl alcohol on i) the intimate blend or ii) the primer coating; c) a la...

The invention relates to a composition for the fabrication of a film at least partially biodegradable. The film is intended to form a package or to be bonded to at least one wall of a package-forming support. Said composition is comprised of a mixture consisting of a hydrocolloid-based material, particularly of algal origin, and of one or a plurality of other components selected amongst stabilizer...