The present invention is directed to a method of washing pulp in connection with bleaching, in which method the pulp is bleached in a first bleaching arrangement, washed in a first washer, bleached in a second bleaching arrangement, and washed in a second washer in such a manner that the washing liquid is recirculated from said second washer to said first washer countercurrent to the pulp flow, ch...

The present invention concerns a method for production of cellulose pulp with a brightness of at least ISO 85 without chlorine bleaching chemicals, in which method the finely divided cellulose-containing fibre material is cooked and delignified to produce a pulp whose kappa number is no more than 14 or so. The method is further characterized in that the pulp is bleached with an ozone additive of 2...

A storage package for a recording medium has a plurality of non-plastic panels (22a,22b,28a) and a holder (14) formed of plastic disposed on one of the panels (22b) for receiving and maintaining a recording medium thereon. At least one panel (22a,28a) is configured and dimensioned to removably receive printed matter therein. The one panel (22b) additionally defines at least one lateral spine (80) ...

The invention relates to a procedure and an apparatus for the determination of the concentration of dissolved ammonia and to a procedure for the manufacturing of a detector. According to the invention, a polypyrrole electrode (2), a reference electrode (1) and an auxiliary electrode (5) are placed in the liquid to be analyzed and the concentration of ammonia dissolved in the liquid is determined b...

A watercool electromagnetic induction heating wok comprises a power control unit connecting to the outlet of power, an induction coil composed of a hollow tube encircled to connect to the power control unit, of which cool water is full, a cyclic watercooling system connecting to the outlet of the induction coil, and a water supply apparatus including a storage tank connecting to cyclic watercoolin...

A device is provided for increasing the surface area of the gas generant used in an automotive safety air bag module (50). Depending on crash conditions, the surface area of the gas generant is increased by shattering the gas generant wafers (80). One embodiment utilizes a squib having a high brisant zone which upon activation shatters the gas generant wafers. Alternatively, a dual function squib ...

Hinge for windows and similar, useable for swing and tilting openings, comprising, in combination, a cap insert with a blind tapered hole, which is inserted into the eye of the fixed part of the bottom hinge, and a pin integral with the part of the hinge fixed to the mobile frame, provided with a peg which enters said tapered hole, so that said mobile frame can carry out a tilting movement.

Device comprising a base, a shaft upright on a central part of the base, an element 4 fixed on the shaft, two thrust plates 3 fixed to the terminal surfaces of the element 4, and a sleeve 6 supported in rotation by the plates 3 and the sleeve 6, in which the hydrodynamic radial support is formed by the element 4 and by the sleeve 6, hydrodynamic thrust supports are formed by the two terminal parts...

A method and related product for purification of waste water, especially of water polluted with phosphorus, nitrogen, heavy metals, and chlorinated solvents. The purification process consists of: a) adding two liquid mixtures in sequence to the waste water; b) letting the pollutants react with the two mixtures; c) subsequently removing the sludge that forms. One of the two liquid mixtures in quest...

Method for eliminating the phenomenon of viscose redistribution of stresses in structures constructed in phases, advantageously but not exclusively applicable to bridges and/or viaducts realised either with the method of quoins, whether prefabricated or cast in situ, or the method of beams, said methods calling for the use of a deferred linkage between the last added structural element and the str...

Automatic system for regulating the temperature in dryers and mixing dryers for the preparation and/or making of bituminous conglomerates, of the type comprising at least one revolving drum 2 with downstream burner 3 at the exit of the materials subjected to the drying and/or mixing- drying 6, calling for: - the use of servomotor means 4 for the automatic regulation of the flame of said burner 3, ...

The invention concerns a packaging container (1) with a tear-off strip (5) stamped out of the outer layer (1d) of the container wall at a place where at least two strips of the container blank at least partly overlap or where a double wall is available. The strip (5) has a freely projecting grip tab (5b), and the rest of the strip is defined by stamped cuts passing through the whole of the tear li...

The invention concerns a ski pole provided with elastic elements 5, 6 between handle 1 and shaft 2 or inside the shaft to absorb stresses A acting in axial direction, and furthermore the ring 9 has a shape and is made of material able to absorb stresses acting in axial direction relative to the shaft 2. The strap 7 is provided with one part 8 of elastic material to guarantee a deformation, stretch...

Method for the production of styrene by the catalytic dehydrogenation of 4-vinyl cyclohexene in the vapour phase comprising placing the 4-vinyl cyclohexene in contact with a catalyst based on heavy metal oxides at a temperature in excess of 500 degree C and less than 650 degree C.

Mono-alkadienyl alkyl ethers and di-alkadienyl alkyl ethers are prepared by telomerization of a conjugated diene, by causing said conjugated diene to react with an aliphatic alcohol or an aliphatic diol respectively, by operating in an aqueous/organic biphasic liquid system, in the presence of a catalytic system formed by: -- (a) a palladium salt or complex; -- (b) an alkyl-, alkylcycloalkyl-,...

A closure system for a heat exchanger distributor in which the cover, of breech lock type, is provided with a central aperture hermetically sealable by a door. Preferred door fastening embodiments are also described.

A distributor with an anticorrosive lining for a heat exchanger, the flat tube plate being provided with a projection which is connected to the tube plate and is formed by a deposit of welding material which acts as an edge for connecting the tube plate to the distributor cylinder, the connection between the anticorrosive linings of the tube plate and the cylinder being achieved by a ring of antic...

It is disclosed a method and related circuits for speech coding using Trellis Coded Quantization for encoding of Linear Predictive Coding Coefficienty. In particular it uses Trellis Coded Quantization for coding Line spectrum Pairs and Reflection Coefficients parameters. The bit allocation at each quantization step of the Trellis Coded Quantizer is made variable and the quantization error accumula...