Methods for producing cementitious compositions from waste products, such as non-ferrous slags, or fossil fuel combustion residue, or ferrous slags, whereby the CaO and alumina contents of the waste products are adjusted as necessary to enable them to combine with a sulphate additive at elevated pH and so couple the faster reactions of the mineral Ettringite with the slower ones of the calcium sil...

Xanthines of formula (I) and their optical isomers and acid-addn. salts are new: R1 = 1-6C alkyl, 3-4C alkenyl or 3-4C alkynyl; R2 = 1-6C alkyl, 3-4C alkenyl, 3-4C alkynyl or opt. substd. benzyl; R3 = (a) C-bonded satd. or unsatd. 5- to 7-membered heterocyclyl contg. one or more O and/or S atoms, opt. substd. by 1-6C alkyl, oxo, CHO, CH2OR4, CH2OR7, COOR4 or CONR5R6; where furyl and thienyl gps. a...

A domestic and industrial type sewage biological purification system including a de-nitrification section (D1), an oxy-nitrification section (R1,R2), a settling section and a sterilizing section (TH2), said system comprising a single vertical structure including the above mentioned section therewithin. Said structure is partitioned by sloping separators (6,7) in three portions wherein the intermed...

A method of terminating, under emergency conditions, an olefin polymerization reaction conducted in the presence of a transitioned metal based catalyst in a gas phase reactor by using a recycle gas from the reactor or a feed stream to the reactor to operate an expander associated with a circulator which maintains fluidized conditions in the reactor while introducing a kill gas into the reactor to ...

PCT No. PCT/DE94/00786 Sec. 371 Date Mar. 3, 1995 Sec. 102(e) Date Mar. 3, 1995 PCT Filed Jul. 6, 1994 PCT Pub. No. WO95/02116 PCT Pub. Date Jan. 19, 1995A method and a device for the variable control of a valve of an internal combustion engine, in particular for a throttlefree load control of an Otto carburetor engine via a lift function of one or several intake valves per cylinder are presented....

Methods and compositions are provided for preparing storage stable partially neutralized acid compositions. The partially neutralized acid compositions are amenable to prolonged periods of storage. Following storage, the acids can be neutralized with a calcium neutralizing source and combined with a lubricant to form a rapidly setting calcium phosphate mineral suitable for a variety of purposes, e...

Implant intended to be fixed through contact with new grown bone tissue comprising a dense material having an implant surface, and having, at least within a surface portion of the implant surface, surface pores covering at least 5% of the surface portion. The surface pores constitute a contact surface for new grown bone tissue, wherein close to at least a substantial fraction of all of the surface...

PCT No. PCT/EP94/03135 Sec. 371 Date Mar. 1, 1996 Sec. 102(e) Date Mar. 1, 1996 PCT Filed Sep. 19, 1994 PCT Pub. No. WO95/08864 PCT Pub. Date Mar. 30, 1995A modularly designed converter with T-shaped current bus bars arranged in parallel and with the crossbars thereof mounted on a metal plate but electrically insulated therefrom. The longitudinal ribs of the bus bars support semiconductor valves a...

PCT No. PCT/FI94/00413 Sec. 371 Date Jun. 6, 1996 Sec. 102(e) Date Jun. 6, 1996 PCT Filed Sep. 19, 1994 PCT Pub. No. WO95/08900 PCT Pub. Date Mar. 30, 1995A mobile communication system and a method for connecting a remote workstation to a data network via a mobile communication network, which allow a remote workstation to be connected more flexibly over a radio path by providing a special intercon...

Conductive adhesive for checking electric circuits is formed on contact electrodes (8,9) of a chip package or a multi-chip module. After contact electrodes (8,9) of the chip package or the multi-chip module are set on terminal electrodes (18) of a checking device in a correct position, the chip package or the multi-chip module is mounted on the checking device, so that the contact electrodes (8,9)...

The method of the invention provides a geopolymeric binder in powder, used for the ultra rapid treatment of materials, soils or mining tailings, containing toxic wastes. Said geopolymeric binder has a setting time equal to or greater than 30 minutes at a temperature of 20 DEG C. and a hardening rate such as to provide compression strengths (Sc) equal to or greater than 15 MPa, after only 4 hours ...

PCT No. PCT/FI94/00304 Sec. 371 Date Jan. 4, 1996 Sec. 102(e) Date Jan. 4, 1996 PCT Filed Jul. 1, 1994 PCT Pub. No. WO95/01831 PCT Pub. Date Jan. 19, 1995A fluidized bed polymerization process in which a central mixing element sweeps the interior of the bed. The mixing element contains agitator arm which pass adjacent to the reactor walls and a have a perforated surface. Gas is directed to the cen...

PCT No. PCT/CH95/00277 Sec. 371 Date Jul. 7, 1997 Sec. 102(e) Date Jul. 7, 1997 PCT Filed Nov. 27, 1995 PCT Pub. No. WO96/19418 PCT Pub. Date Jun. 27, 1996A building and construction material and method of making the material utilizes water with cement which are mixed together and followed by mixing with a mineral filler material such as sand or gravel to produce concrete having micropores of abou...

At a pallet where an upper carrier surface (1) is built of elements of preferably hollow structured sheet material encasing a core of rigid foam material, such as polystyrene or polyurethane, thecarrier surface is surrounded and held together by circumferential tying means (8) at the edge of the carrier surface. The tying means could preferably be flat tape (8) or in a particular embodiment a circ...

A dragline comprising a main housing, a bucket hoist mechanism mounted on the housing, a bucket drag mechanism mounted on the main housing, a moving mechanism for moving the main housing over the ground, a boom having upper and lower ends and a rectangular cross-section, the lower end being connected to the main housing, the upper end having thereon a sheave, the boom having a longitudinal axis an...

PURPOSE: To provide coding and decoding method and device for increasing the number of simultaneous users and maintaining the same maximum error rate limit. CONSTITUTION: In the case of coding, a bit 202 is coded 204 to a symbol 206 so as to facilitate maximum likelihood decoding. Respective groups inside a block 208 are interleaved by a group unit, and an orthogonal code is taken out from a respe...

A method of applying a quick setting spray material is disclosed, wherein a cement-containing principal composition is supplied into a feed pipe and sprayed through a nozzle and an aqueous solution of a (meth)acrylate as a set accelerating agent is supplied into the principal composition at a linear speed of 0.5 to 50 m/sec through at least two supply pipes that are connected to the feed pipe in a...

There is disclosed a control unit of a computer system comprising a volatile storing device for holding written data while the power is on, a non-volatile storing device for holding the written data even when the power is off, and a power-off preserving device for powering off after transferring the data held in the volatile storing device to the non-volatile storing device. The control unit of th...

This plant moulds plastic, hollow vessel mouldings. Its extrusion press (2) delivers the tubular moulding (3) into two chains (A, B) of moulds (4a-b), following parallel, closed, recirculating paths. These paths become adjacent at the exit path of the moulding, where the mould halves join. The moulds form a sequence of opposing semi-cylindrical depressions (5a-b). There is a drive for the parallel...

PCT No. PCT/US94/05108 Sec. 371 Date Jun. 16, 1995 Sec. 102(e) Date Jun. 16, 1995 PCT Filed May 6, 1994 PCT Pub. No. WO94/27041 PCT Pub. Date Nov. 24, 1994A unitized fuel supply assembly is disclosed including an in-line reciprocating cam driven pump (14) for supplying fuel to an accumulator (12) from which fuel is directed to a plurality of engine cylinders by means of a distributor (16) mounted ...