Abstract: The invention relates to a xylanase originating from a Bacillus strain. This xylanase is active over a wide range of acid and basic pH. The invention also relates to new strains of microorganisms producing this xylanase and to methods for preparing this xylanase. The invention also relates to a DNA molecule and to an expression vector or an integration vector containing this DNA molecule. The invention also relates to uses of the latter and to compositions containing it.

Abstract: The invention relates to a xylanase originating from a Bacillus strain. This xylanase is active over a wide range of acid and basic pH. The invention also relates to new strains of microorganisms producing this xylanase and to methods for preparing this xylanase. The invention also relates to a DNA molecule and to an expression vector or an integration vector containing this DNA molecule. The invention also relates to uses of the latter and to compositions containing it.

Abstract: The invention relates to a xylanase originating from a Bacillus strain. This xylanase is active over a wide range of acid and basic pH. The invention also relates to new strains of microorganisms producing this xylanase and to methods for preparing this xylanase. The invention also relates to a DNA molecule and to an expression vector or an integration vector containing this DNA molecule. The invention also relates to uses of the latter and to compositions containing it.

Abstract: The invention relates to an isolated and purified culture of Bacillus sp. strain 720/1 (LMG P-14798); to xylanases obtained from this strain and xylanases obtained from derivatives and mutants of strain 720/1. The invention also relates to a DNA molecule encoding a xylanase and to expression vectors or integration vectors containing the DNA molecule. This invention also relates to transformed host strains comprising the DNA molecule encoding the xylanase.

Abstract: The invention relates to a xylanase originating from a Bacillus strain. This xylanase is active over a wide range of acid and basic pH. The invention also relates to new strains of microorganisms producing this xylanase and to methods for preparing this xylanase. The invention also relates to a DNA molecule and to an expression vector or an integration vector containing this DNA molecule. The invention also relates to uses of the latter and to compositions containing it.

Abstract: A modular architecture for electronic equipment. Data-concentration modules, processing modules and display devices are interconnected by data-transmitters with sensors, measuring instruments and detectors. The data-concentration modules concentrate only the data which is not critical for the industrial process. This data is transmitted to other modules by a multi-receiver serial bus. The other modules directly receive the critical data which is routed by separate, respective serial digital links between, on the one hand, display devices and functions controlling the processes which are distributed in the process modules, and, on the other hand, sensors, measuring instruments and actuators.

Abstract: The invention relates to a xylanase originating from a Bacillus strain. This xylanase is active over a wide range of acid and basic pH.

Abstract: A purified xylanase derived from B. Pumilus PRL B12 is disclosed. This xylanase is efficient for use in the biobleaching of wood pulp, permitting a strong reduction in the quantity of chlorine used and AOX compounds produced in classical and ECF wood pulp bleaching sequences as well as the quantity of ozone used in TCF sequences. The gene coding for the xylanase was isolated and purified and used to construct an expression vector therefor. A recombinant host strain of B. licheniformis is also disclosed which is efficient for expressing heterologous enzymes, including the xylanase when transformed by the expression vector.

Abstract: A purified xylanase derived from B. Pumilus PRL B12 is disclosed. This xylanase is efficient for use in the biobleaching of wood pulp, permitting a strong reduction in the quantity of chlorine used and AOX compounds produced in classical and ECF wood pulp bleaching sequences as well as the quantity of ozone used in TCF sequences. The gene coding for the xylanase was isolated and purified and used to construct an expression vector therefor. A recombinant host strain of B. licheniformis is also disclosed which is efficient for expressing heterologous enzymes, including the xylanase when transformed by the expression vector.

Abstract: The invention relates to a xylanase originating from a Bacillus strain and particularly to Bacillus sp. strain 720/1 (LMG P-14798) and to xylanase obtained from derivatives and mutants of this strain. The xylanase of the invention is active over a wide range of acid and basic pH. This invention also relates to uses of the xylanases and enzyme compositions comprising the xylanases.

Abstract: A purified xylanase derived from B. Pumilus PRL B12 is disclosed. This xylanase is efficient for use in the biobleaching of wood pulp, permitting a strong reduction in the quantity of chlorine used and AOX compounds produced in classical and ECF wood pulp bleaching sequences as well as the quantity of ozone used in TCF sequences. The gene coding for the xylanase was isolated and purified and used to construct an expression vector therefor. A recombinant host strain of B. licheniformis is also disclosed which is efficient for expressing heterologous enzymes, including the xylanase when transformed by the expression vector.

Abstract: Process for bleaching a chemical paper pulp by means of a sequence of treatment stages involving at least one stage with an enzyme and at least one stage with a peroxyacid.

Abstract: The throttle control device controlling two engines of a same aerodyne which embodies the invention uses a drive mechanism mounted rotatably about a fixed axis and rotated by means of a servomotor controlled by a computer ensuring automatic flight velocity control for the aircraft, two levers respectively integral with two annular elements mounted rotatably about said axis, on both sides of the drive mechanism, two electromagnetic couplers respectively disposed between said annular elements and said drive mechanism, and two angular position sensors respectively associated with the two annular elements, these two sensors being respectively connected to the throttle control circuits of the engines of the aircraft. This system ensures the independence of the two levers and the level of safety required for automatic control of the aircraft.

Abstract: Peracetic acid compositions containing at least one thickening agent and optionally a stabilizer chosen from sequestering agents, free-radical scavengers and mixtures containing two or more of these products.The preferred compositions are obtained by successively incorporating at least one stabilizer and then at least one thickening agent.These compositions are especially capable of being employed for the disinfection of large bulks which are difficult to immerse and of nonhorizontal surfaces, and for detergency or bleaching at low temperature.

Abstract: A process for the manufacture of an explosive cartridge in a tubular casing, including mixing a solution containing hydrogen peroxide, an oxidizable organic material, and at least one precursor monomer of a gelling agent; and reacting the at least one precursor monomer to form macromolecules of the gelling agent in situ in the tubular casing.

Abstract: A process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps in which the pulp is subjected to a treatment with oxygen and a subsequent treatment with peroxide. The effluent from the treatment with peroxide is at least partially recycled to the treatment with oxygen.

Abstract: Process for stabilizing solutions of peroxidic compounds used for bleaching. At least one polymer derived from an alpha-hydroxyacrylic acid, which contains units of the formula ##STR1## where R.sub.1 and R.sub.2 represent hydrogen or an alkyl group comprising from 1 to 3 carbon atoms which can be substituted by a hydroxyl group or a halogen atom, R.sub.1 and R.sub.2 being identical or different, and where M represents an alkali metal atom, a hydrogen atom or an ammonium group, is added to the solution as a stabilizer.