The invention relates to means for cleaning optical heads used for reading compact disc data, in particular to optical discs for cleaning said heads. The inventive device for cleaning an optical head for reading compact-disc data comprises a compact disc (2) provided with at least one projection (4). A through channel is embodied near said projection (4) which is arranged on an annular element (5)...

The present invention is a well data telemetry apparatus and method of its use. The apparatus generally comprises a signal generator (12) capable of generating a signal at a first location of a well, a receiver (20) capable of detecting the signal at a position spaced from the generator, and an electrical insulator (26) disposed between at least a portion of the generator and the receiver. The app...

The procedure, comprising at least one solubilisation and one digestion stage, has a separating stage for the liquids and solids of solubilized sludge, with the liquid fraction issuing from it being at least partially subjected to a digestion stage before being sent to the upstream end of the biological treatment process. It also has an intermediate stage in which the solid fraction is solubilized...

The actuator comprises at least one step comprising a coil (1) and a permanent magnet arrangement. The coil has at least one wind and the magnet arrangement comprises a number of pairs of magnetic poles which are distributed symmetrically in the coil plane and which form a translation section (5, 6) and a rotation section (1) so that when current (8) is passed through the coil, the translation sec...

A buffer deadlock prevention technique for dataflow computations. The invention that implements the following algorithm: (1) providing a supplemental buffer for each input of a "downstream" program; (2) partitioning the inputs of each downstream program into disjoint input sets, such that two inputs are in the same input set if and only if such inputs come, either directly or indirectly, from a co...

The chair has a support unit (1) and a seat underlay (2), which is movably connected to the support unit, and adapted to support a human bottom. The seat underlay comprises a support structure (3), which is connected to the support unit, and a seat part (4), which has at least two bearing units, enabling the seat to move freely, with respect to the support unit. Independent claims are included fo...

This invention relates to a tube finning machine ( 10 ), and in particular to a machine capable of fitting several fins ( 26 ) to one or more tubes ( 26 ) at the same time, the assembled finned tube being suitable for heat exchange applications. According to one aspect of the invention there is provided a tube finning machine for mounting extended surface members ( 96 ) upon one or more tubes, the...

A cellphone Presence and Locating system includes antenna(s) with associated receiver(s) extracting user information, presence and location data from a plurality of mobile cellphones with a Subscriber Identity Module (SIM) card containing a low duty cycle transmitter. The transmitter communicates with the SIM processor and extracts user and configuration information. The transmitter broadcast mess...

The programmable transponder has a central axial passage (4) fixed to the animal ear. The body is made in two halves, a lower (1) and upper (2) part. The transponder (3) is held without compression between the two halves by a collar (17). The two halves are assembled by laser soldering.

A sensor arrangement for monitoring a spatial area of least one motor-driven wing of a door includes a plurality of primary transmitters emitting beams of radiation toward a spatial area, and a plurality of primary receivers arranged to receive radiation from the primary transmitters which is reflected in the spatial area, the receivers generating a signal to actuate the motor driving the wing. A ...

The invention concerns the technology of inorganic substances, in particular, the production of ammonia, and can be used on the installations for removal of carbon dioxide from convertible gas with recirculation and regeneration of absorbent at production of synthetic ammonia. A method of regeneration of absorbent saturated by carbon dioxide in the absorber is realized by the withdrawal of the flo...

The device supports pipes in a predetermined arrangement of separate positions beside and above one another, during storage and transportation. Retaining elements (1) are arranged vertically above one another, above and below each pipe position. The elements have recesses which are arranged diametrically opposite one another on the upper and lower sides, and which are spaced vertically. The recess...

A dosage form and a method are disclosed and claimed for administering a drug in a sustained and constantly ascending rate per unit time to provide an intended therapeutic effect while concomitantly lessening the development of unwanted effects.

A method and an apparatus to record an audio signal use a beam forming algorithm for at least two microphones. The method includes disposing a plurality of microphones at a plurality of predetermined locations to generate audio signals upon receiving a sound signal output from a sound source, forming a beam from the audio signals by adjusting a delay and a level of the audio signal of each of the ...

A well treating composition of a composite containing a scale inhibitor adsorbed onto a water-insoluble adsorbent is useful in the control, formation and treatment of inorganic scales in a subterranean formation or wellbore. In addition, the well treating composition is useful in controlling the rate of release of scale inhibitor in the wellbore. The water-insoluble adsorbent may be activated carb...

Described is the use of alpha -(4-chlorophenyl)- alpha -(1-cyclopropylethyl)-1H-1,2,4-triazol-1-ethanol as a microbicide for the protection of industrial materials, and agents containing this compound.

An antiviral compound comprises a dendrimer such as a polyamidoamine or polyly sine dendrimer having a plurality of terminal groups, wherein at least one of the terminal groups has an anionic- or cationic-containing moiety bonded thereto, particularly a sulfonic acid-containing, carboxylic acid-containing or trimethylammonium-containing moiety or the like.

For medical fluids, two-part containers are used which consist of an inner container and an outer container which is impenetrable to diffusion. The inner container collapses when the fluid is removed.For the purposes of pressure compensation between the gaseous space, disposed between the inner- and outer containers, and the surroundings of the two-part container, a pressure compensation device is...

Calcium salts in the form of nano-scale primary particles with an average diameter of 10-300 nm are used in composite materials containing sparingly-soluble calcium salts (e.g. phosphates or fluorides) and a protein component. Composite materials (I) containing (a) calcium salts which are sparingly soluble in water, selected from phosphates, fluorides and fluorophosphates, which may also contain h...

A power unit has inlet appliance as separate channels, working wheel, one-side valves, fixed in radial positions blades and the channels of outlet unit.