The subject of the present invention is a process for treating shellfish, in particular oysters, intended to facilitate their opening before consumption, of the type comprising the creation of at least one fragile zone on the shell, especially by local destruction or wearing away of the thickness of the material constituting it. According to the invention, this process consists in applying to the ...

In construction of a composite material for decorative applications such as eyeglass frames, adjusted addition of whiskers to metal matrix provides the product with light weight, rich anticorrosion, high strength and, rich elasticity. Additional core-to-sheath cladding further improves workability without any influence on the light weight characteristics.

A safety binding for binding a boot to a ski, which includes first and second laterally pivotable independent wings adapted to retain one end of the boot on the ski. Each of the wings is mounted to pivot around respective first and second lateral pivot axes. Elastic return means bias each of the wings towards a centered stable maintenance position of the boot. The apparatus includes a movable anti...

The layer comprises, grafted radiochemically on its surface, acrylic acid monomers and/or oligomers and salts of this acid. The layer is employed as a coating layer in laminated glazing.

A polyimide powder which can provide a molding having excellent both strength and heat resistance by heat-press molding, and a method for producing such polyimide powder are disclosed. The polyimide powder comprises spherical polyimide particles having a particle size distribution of from 0.5 to 20 mu m and a mean particle diameter of from 1 to 15 mu m, and comprising a repeating unit represente...

A magnetic marker is formed from a magnetic material having a hysteresis characteristic which is such that upon subjecting the material to an applied alternating magnetic field, the magnetic flux of the material undergoes a regenerative step change in flux at a threshold value when the field increases to the threshold value from substantially zero and undergoes a gradual change in flux when the fi...

A magnetic marker is formed from a magnetic material having a hysteresis characteristic which is such that upon subjecting the material to an applied alternating magnetic field, the magnetic flux of the material undergoes a regenerative step change in flux at a threshold value when the field increases to the threshold value from substantially zero and undergoes a gradual change in flux when the fi...

Procédé de préparation du rétinal par condensation d'un sulfure C1 5 de formule I sur un halogénoacétal C5 de formule II suivie de l'hydrolyse et de la désulfuration du sulfure acétal C2 0 de formule III en passant intermédiairement par le sulfure aldéhyde de formule IV.
(CF DESSIN DANS BOPI)

L'invention concerne une étiquette à circuit de résonance désactivable et son procédé de fabrication.

Le procédé comprend les étapes consistant à former une bande 20 comportant une série de premiers conducteurs 25, former une autre bande 37 comportant une série de seconds conducteurs 30, où au moins un des conducteurs est un conducteur spiral, déposer de la matière de soudage sur chaque c...

Procédé et dispositif de mesure du chargement du tambour, en particulier pour machines à laver domestiques et essoreuses, avec une régulation électronique de la vitesse de rotation qui exécute un programme de lavage et/ou d'essorage différent en fonction des différents états de chargement du tambour, caractérisé en ce que l'on mesure le couple de rotation nécessaire à l'accélération du tambour ...

Procédé de détoxification in situ de nappes souterraines contaminées par des composés polluants tels que : nitrates, pesticides, solvants chlorés, pyralènes, huiles minérales, composés organo-chimiques anthropogéniques divers, caractérisé par le confinement dans une partie de l'aquifère, par production de gradients hydrauliques, d'une zone de réaction AB à l'intérieur de laquelle sont contrôlée...

The invention covers cement slurries for the cementing of oil wells or similar, with good fluid-loss control, characterized by the fact that their mix fluid is an oil-in-water emulsion stabilized by at least one surface-active agent.

Described are preforms for metal matrix composites consisting of a ceramic material belonging to the class of the oxides, nitrides, carbides, borides, oxynitrides and the like, prevailingly in an acicular form and having a monocrystalline or polycrystalline structure, having a density of from 0.2 to 1.6 g/cm<3> and a porosity of from 50 to 95%.

The device comprises an outlet screen 7 at the outlet of the flow channels 3 and a control screen 8. The two screens have openings 9, 10 facing each other, of approximately the same shape, cross-section and pitch. One of the screens 8 is capable of moving with a reciprocating motion in front of the other screen, so that the solid parts 15 of the control screen 8 will continuously remain in front o...

The invention relates to a method and a device leading to an orthopaedic prosthesis being obtained with an excellent surface finish. A preform 4 made of polymer, especially a polyethylene having a high molecular weight, of frustoconical shape is inserted into a mould cavity 10, centred by means of a polished punch 4 fitted in place of the nozzle of a conventional injection press, which punch moves...

Un instrument ophtalmologique de type à balayage par faisceau laser possède une première source de lumière à faisceau laser 21 pour émettre un premier faisceau laser; une deuxième source de lumière à faisceau laser 22 pour émettre un second faisceau laser d'une longueur d'onde différente de celle du premier faisceau laser; et un élément de réception de lumière 9 pour recevoir un faisceau laser ...

Hip prosthesis. The screwable cotyle ring for hip prosthesis is characterised in that in the wall 3 of this ring are made longitudinal through-slots 10, each extending from the bottom 2 of the ring to the vicinity of the edge 3a of its peripheral wall 3, and in that each longitudinal slot 10 is defined by a non-radial cutout of the wall 3 of the ring. Application to the acetabulum. ;

Pro...

PCT No. PCT/EP85/00171 Sec. 371 Date Dec. 18, 1985 Sec. 102(e) Date Dec. 18, 1985 PCT Filed Apr. 17, 1985 PCT Pub. No. WO85/04881 PCT Pub. Date Nov. 7, 1985.Compounds of formula I I wherein R2 and R3 are the same or different and each represent unsubstituted or substituted acyl, and (a) R1 represents lower alkyl, aralkyl or the phosphate, pyrophosphate, phosphorylethanolamine or pyropho...

A method of synthesizing long chain DNA, in which blocks having 4 to 8 base sequences are purely chemically ligated by a so-called solid phase method (triester method) using aminated CPG as a carrier.

Method of testing an integrated memory which includes an array of memory elements, an address decoder for these elements, redundant elements as well as at least one bank of fuses making it possible to define, through the blowing of certain fuses of each bank, an address of a defective memory element to be replaced by a redundant element, characterised in that it consists: - in testing, on the on...