A process for the manufacture of a non-asbestos corrugated sheet comprising forming into corrugated form an aqueous slurry of a mixture comprising, on a dry weight basis, 40-60% cement, 30-40% silica and 5-15% cellulose fibres, compressing said corrugated form so produced in a press to reduce its thickness and increase its density, removing said form from said press and submitting said form to aut...

A superplasticizer cement admixture for portland cement based compositions formed from a low molecular weight alkali metal polyacrylate in combination with an alkali metal or alkaline earth metal polynaphthalene sulfonate-formaldehyde or an alkali metal lignosulfonate or an alkaline earth metal lignosulfonate or mixtures thereof.

PURPOSE:To improve the productivity of inspecting an element to be inspected by automating the inspection by a method wherein an inspection device is composed of an inspection part for visual inspection of the element to be inspected and a destruction mechanism to destruct the element to be inspected according to the result of inspection at the inspection part. CONSTITUTION:A television camera (in...

The brake unit (e.g. for use in controlling draw works of a drilling rig comprises an input shaft (22) which operates to drive a gear pump (96) for circulating oil under pressure over interposed brake discs (136) and plates (140) and through restricted openings (162) during a first direction of rotation such as during lowering of the pipe stands so as both to cool and to lubricate the discs and pl...

A paint-finishing composition for a cement base material, which comprises, as dissolved or dispersed in a solvent, 100 parts by weight of a solvent-soluble fluorinated polymer having cure sites and an intrinsic viscosity of from 0.05 to 2.0 dl/g as measured at 30 DEG C. in tetrahydrofuran, from 0.1 to 100 parts by weight of a curing agent and from 5 to 500 parts by weight of a coloring agent.

LA PRESENTE INVENTION CONCERNE UN PROCEDE DE PRODUCTION D'UN GAZ CONTENANT DE L'OXYDE DE CARBONE ET DE L'HYDROGENE, PROCEDE QUI PERMET L'UTILISATION DE LA TECHNOLOGIE ACTUELLEMENT CONNUE DANS LE DOMAINE COMMERCIAL ET L'UTILISATION DE TOUT GENRE DE MATIERE DE DEPART CONTENANT DU CARBONE ETOU DE L'HYDROCARBONE ET SELON LEQUEL IL N'EST PAS NECESSAIRE QUE LE GAZ SOIT SOUMIS A DES OPERATIONS DE LAVA...

Low density foams are prepared from an admixture which comprises an unsaturated polyester resin, a free radical initiator which initiator is activated at temperatures from about 100 DEG to about 400 DEG F, and a compound selected from a t-alkylhydrazinium salt or a carbonylhydrazine. The low density foams have uniform cell structure without cracks or voids and the process is efficient.

A process for producing a multi-layer coating upon a substrate surface, in which there is first applied to the surface a pigmented basecoat composition and then there is applied to the basecoat film a transparent topcoat composition; characterized in that the basecoat composition is based upon a dispersion in an aqueous medium of crosslinked polymer microparticles which have a diameter of 0.01-10 ...

L'INVENTION CONCERNE UN PROCEDE DE SEPARATION DE FINES PARTICULES DE CATALYSEUR, D'UNE CHARGE HYDROCARBONEE, ISSUE D'UNE UNITE DE CRAQUAGE CATALYTIQUE PAR FILTRATION AU TRAVERS DE BARRIERES MINERALES ET BOUCLE DE FILTRATION.

CE PROCEDE CONSISTE A FILTRER LADITE CHARGE AU TRAVERS DE BARRIERES MINERALES 1 RESISTANTES A LA CHALEUR ET D'UNE POROSITE ADAPTEE AU DIAMETRE MINIMAL DES PARTICULES ...

An inductive magnetic field article surveillance system includes a generator for a first inductive magnetic field having a predetermined frequency. The articles carry a structure which responds to the first magnetic field to derive a second inductive magnetic field having a predetermined frequency; the second field occurs immediately after expiration of the first magnetic field. A receiver for the...

a. Printed-circuit board including at least one electrical component disposed thereon. b. A printed-circuit board 10 is provided, which serves as a support to at least one electrical component 20, for example a coil, a relay, etc., which is disposed thereon. The component 20 has there at least one electrically conducting, solderable connection terminal 26, 28 of elongate shape and which traverses ...

Additive compositions for Portland cement compositions are disclosed which provide the corrosion inhibition of calcium nitrite without the corresponding set acceleration. The additive compositions are stable, single phase aqueous solutions consisting essentially of water and, as solutes, a major amount by weight of calcium nitrite and a minor amount by weight of corn syrup, a hydroxycarboxylic aci...

PURPOSE:To make the heat exchange medium deform by the heat generation of a semiconductor element to improve the adhesiveness of the contact surface and to improve the heat-radiating characteristics by a method wherein part of the heat exchange medium interposing between the element and the heat- radiating fin is constituted of a shape memory alloy. CONSTITUTION:A first heat exchange medium 6a con...

PURPOSE:To find immediately an input miss even on the way of input by referring to a tree structure command table where plural commands are expressed with a tree structure to discriminate the validity of each character of a command character string and displaying error immediately if the validity is not discriminated. CONSTITUTION:A code A inputted by the first key depression is compared with the ...

PURPOSE:To make a case easy to grasp and to shorten the case in length to make it compact and portable when it is carried by making the case foldable and arranging constituting parts divisionally in the front end side and the rear end side of the case. CONSTITUTION:A front end-side case 10 and a rear end-side case 20 are straightened to use a writing input type minicomputer, and the front end (the...

PURPOSE:To execute jobs which are different according to parameters on a time-division basis and to shorten the execution time of jobs for plural parameters by employing the time of the timer mechanism of an information processor as a job name. CONSTITUTION:The kind (name) of a job and processing condition such as parameters, etc., in the job are inputted from the input part I of a job execution s...

PCT No. PCT/FR84/00129 Sec. 371 Date Dec. 20, 1984 Sec. 102(e) Date Dec. 20, 1984 PCT Filed May 14, 1984 PCT Pub. No. WO84/04547 PCT Pub. Date Nov. 22, 1984.The invention relates to a cathode rod permitting extraction of the current from a cell for the production of aluminum by electrolysis according to the Hall-Heroult process, which is sealed in at least one groove which is open at the base of e...

Metal surfaces, particularly zinc and zinc alloy surfaces, are treated with an aqueous acidic solution containing effective amounts of A) hydrogen ions to provide a pH of about 1.5 to about 2.2, B) an oxidizing agent, C) at least one of iron, cobalt, nickel, molybdenum, manganese, aluminium, lanthanum, lanthanide mixtures or cerium ions or mixtures thereof, or instead of C) iron and cobalt i...

New bronchospasmolytically active compounds exhibiting long duration of action and reduced undesired side effects of the structural formula I and therapeutically acceptable salts thereof, in which formula R is selected from the group consisting of -C(CH3)3, R1 is selected from the group consisting of H and R2, R2 represents the radical of the formula wherein R3 is sel...

New bronchospasmolytically active compounds exhibiting long duration of action and reduced undesired side effects, of the structural formula I and therapeutically acceptable salts thereof, in which formula R, R1 and R2 are as follows: R is selected from the group consisting of -C(CH3)3, R1 is selected from the group consisting of H and R2; R2 is selected from the group consist...