A process for the production of a 5-substituted derivative of a 2,3 min -anhydro-2 min -deoxyuridine preferably corresponding to the following general formula: wherein R<1> represents H, alkyl, aryl, halogeno or CF3; characterised in that it comprises heating a 5-substituted derivative of a 2 min -deoxyuridine preferably corresponding to the following general formula: wherein R<1>...

There are disclosed novel 2 min ,3 min -dideoxy-2 min -fluoronucleosides and 2 min -3 min -dideoxy-2 min ,3 min -didehydro-2 min -fluoronucleosides and processes for their preparation. The compounds so produced exhibit therapeutically useful antiviral and, more particularly, anti-HIV effects.

There are disclosed novel 2 min ,3 min -dideoxy-2 min -fluoronucleosides and 2 min -3 min -dideoxy-2 min ,3 min -didehydro-2 min -fluoronucleosides and processes for their preparation. The compounds so produced exhibit therapeutically useful antiviral and, more particularly, anti-HIV effects.

In order to achieve an essentially turbulence-free zone near the means (11) for the discharge of purified water in an anaerobic purification plant for waste water with a fermentation chamber, a settler disposed above the latter and the said discharge means (11) disposed above the settler, the settler consists of three levels of gas-collection hoods (2, 3, 4), each gas-collection hood of the upperm...

An assembly for effecting a fire-resistant seal across a gap (21) between a fire-resistant door (11) and its frame (10), includes a channel (14) along the edge (13) of the door with intumescent material (16) therein and an elongate cap (15) fitted in the mouth of the channel, covering the intumescent material (16). The sides (24) of the cap (15) are resilient to overlap with and grip the sides (22...

A process for automatically going into the mode for increased suction extraction of the gases emitted by the tanks of series for the production of aluminium by igneous electrolysis using the Hall-Heroult process, each tank being closed around its periphery by a plurality of removable covers which are disposed in substantially sealed relationship with each other and between each thereof and their s...

A method is provided for the continuous production of isopropanol and secondary butyl alcohol by catalytically hydrating the corresponding aliphatic olefin in an elongated reaction vessel in which co-product by-product dialkyl ether is separated from the reaction product and recycled to the reaction mixture being introduced therein at a point between the olefin feed inlet and the product outlet ab...

There is described a cavity tray folded from a flexible waterproof sheet blank having an elongate rectangular base region having two longer sides and two shorter ends, a rectangular end wall (4, 5) region joined along one of its edges to a first end of the base region and a bridging portion (12) joined to one side of the base region, the bridging portion (12) and the end wall (4, 5) portion being ...

The object of the invention is to simplify a known portable radio apparatus in which an accumulator for the power supply is accommodated in a special carrying device. The object is achieved by providing one wall (12) of the casing (11) of the portable radio apparatus with a depression (13) which is filled by a power supply block (14). The power supply block has mechanical blocking means (18, 22) w...

The object of the invention is to simplify a known portable radio apparatus in which an accumulator for the power supply is accommodated in a special carrying device. The object is achieved by providing one wall (12) of the casing (11) of the portable radio apparatus with a depression (13) which is filled by a power supply block (14). The power supply block has mechanical blocking means (18, 22) w...

Apparatus and method for controlling a variable speed wind turbine-generator at improved efficiencies is disclosed. The method and apparatus of the invention control the rotor tip speed below the limiting torque of the wind turbine at a selected constant velocity ratio with respect to wind speed and, above the limiting torque, control the rotor tip speed at speeds greater than those dictated by th...

A bypass diode assembly (10) for a photovoltaic module (11) incorporating a plurality of electrically conductive strips (12), each having a long leg (13) and a short leg (14). The long leg (13) of each conductive strip (12) is in overlapped relation with the long leg (13) of another conductive strip (12). A diode (21) is interposed between successive conductive strips (12) in the vicinity of the o...

The invention concerns a curtain spraying pipe with means for cleaning a longitudinal slot-shaped opening in the pipe wall, through which a curtain 6 of a fluid is to be sprayed out. The cleaning means 7 comprises a carrier 8 inside the pipe and a cleaning device 9 projecting from the carrier through the slot 5, the carrier being arranged to be moved inside the spray pipe backwards and forwards be...

Use of one or more of the terpene derivatives dihydrocarveol [2-methyl-5-(1- methylethenyl)cyclohexanol]; dihydrocarvone [2-methyl-5- (1-methylethenyl)cyclohexanone]; piperitol [3-methyl-6-(1- methylethyl)-2-cyclohexen-1-ol]; piperitone [3-methyl-6- (1-methylethyl)-2-cyclohexen-1-one]; and isopulegol [5- methyl-2-(1-methylethenyl)cyclohexanol] and/or of cinnamaldehyde (3-phenyl-2-propenal) as the ...

The air input device (12) is located in a first room (10) in the house, and air from it diffuses near to the floor through gaps beneath the doors (60) to the various other rooms in the building (20,30,40). - The air heated by heating sources (80,90) in the rooms rises and flows outwards through ventilated door tops, and finally out of the building via at leat one output air unit (92) in a room (50...

PCT No. PCT/SE88/00603 Sec. 371 Date May 8, 1990 Sec. 102(e) Date May 8, 1990 PCT Filed Nov. 10, 1988 PCT Pub. No. WO89/04417 PCT Pub. Date May 18, 1989.An ignition device for lances, such as lances intended for supplying oxygen gas to metallurgical processes, having a tubular casing intended to be fitted partially onto one end of a lance and the end part of which, located distal from the lance, c...

PCT No. PCT/SE88/00603 Sec. 371 Date May 8, 1990 Sec. 102(e) Date May 8, 1990 PCT Filed Nov. 10, 1988 PCT Pub. No. WO89/04417 PCT Pub. Date May 18, 1989.An ignition device for lances, such as lances intended for supplying oxygen gas to metallurgical processes, having a tubular casing intended to be fitted partially onto one end of a lance and the end part of which, located distal from the lance, c...

The sprung strap (14) is guided in slots (20) between the main part (2) of the cover (1) and a guide (7) provided for it. The cover has a projection (17) rising from the can aperture (11) which allows a person to drink from the can. - When the sprung strap (14) is moved to a position freeing the outlet aperture, it forms a sprung bend (14') which enables it to return automatically to the closing p...