FIELD: gas-discharge engineering; gas-filled switches and discharge arresters. SUBSTANCE: neon is newly introduced in hydrogen-containing gas mixture, proportion of ingredients being as follows, volume percent: neon - 93-87; hydrogen - 7-13. EFFECT: increased breakdown voltage, improved service life of device.

A system including pretreating feed air for a cryogenic air separation plant wherein feed air is passed through an electric field, oxygen is ionized, and ionized oxygen reacts with hydrocarbons upstream of an adsorption prepurifier, and subsequent separation of the feed air by cryogenic rectification.

FIELD: polymer production. SUBSTANCE: polyurethane, polyisocyanurate, and urea resins, in particular, polymer foams are prepared from compositions including nonsilicone surfactants, which are ethers containing about 10 to 90% ethylene oxide units and about 10 to 90% alkylene oxide units with at least 4 carbon atoms. These polyether surfactants can be used for preparing foams that are essentially i...

A catheter includes a plurality of expandable primary leads to deliver energy to a fallopian tube, a vein such as a hemorrhoid or an esophageal varix, or another hollow anatomical structure requiring ligation or occlusion. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that the leads can receive po...

The drum brake, comprising a back plate (2) and brake shoes (3, 4) actuated by a hydraulic or pneumatic cylinder (5), has a noncircular hole (21) in the back plate to receive a retaining and locking lug (57) on the cylinder. The cylinder locking lug is connected by a neck (56) which passes through the hole to a base (55) with a thrust surface (551) which presses against the back plate when the cyl...

The dust cover operating drive (5) has a rotary cog wheel (52) with cog teeth (520) over a limited part of its periphery, cooperating with a toothed rack (42) for linear displacement of the dust cover (4) over a defined path in the vertical direction relative to the laser head of the compact disc player, for selectively enclosing the laser head.;

Ce dispositif d'entraînement de capot anti-pouss...

A moving picture decoding apparatus includes an input part which adds at least one picture tag to a bit stream, having a plurality of pictures, which has been subjected to intraframe or interframe encoding, the picture tag or tags having a value monotonously changing on a picture-by-picture basis, independent of picture content, a buffer memory storing the bit stream and a controller controlling o...

The waste treatment system, as described herein, involves microbial waste degradation within a bioreactor. An inoculation mixture including a cleaning agent and non-pathogenic microorganisms is mixed with solid or liquid waste to be treated. Waste combined with the inoculation mixture is degraded by exposure to a preparative chemical cleaning agent as well as anaerobic and aerobic microbiological ...

A key and lock device comprises a key and a standalone lock. The key has an electronic circuitry with a first memory and a contact. The lock has electronic circuitry with a memory, and a contact arranged to co-operate with the key's first contact. A blocking mechanism is adapted to block operation of the lock unless an authorized key is inserted in the lock. The memory of the key stores a public i...

A method of authorizing a key or lock device comprises the following steps: a first user device and a first system device used in a first level of a lock system, such as at a manufacturer, are created. A first encryption key is stored in the first user device and the first system device. When the user device is to be shipped to a second level of the lock system, such as a locksmith, an authenticat...

The present invention relates to a normally-on bidirectional switch, including, in parallel between two power terminals of the switch, a first cathode-gate thyristor, the anode of which is connected to a first power terminal, a second anode-gate thyristor, the anode of which is connected to a second power terminal, and a resistor in series with a controllable switch, the midpoint of this series as...

The plug (1) comprises a mesh ring (3) of a metal such as titanium, having an inner space (4) and two apertures (5). The ring has inner and outer surface coatings of an osteo-conductor material, e.g. tricalcium phosphate or hydroxyapatite. It has a certain rigidity but is capable of deformation to a greater or lesser degree, and its inner space can receive one or more screws for fixing the plug to...

The leg prosthesis has a femoral component (1), a tibial component (2) and a foot (3) articulated together. There is a piston (8) mounted within a hydraulic chamber (9) to dampen movement of the knee. The chamber has two chambers defined on opposite sides of the piston controlled by a pilot closure and non-return valve.

Sports shoe, having a sole (10), an upper (11) and a lace-up section (16), incorporates a lock (20) for the ends of the laces (15a, 15b) and a pouch (30) in which the lock and lace ends are stored after lace-up. The pouch is made from a supple material and fits across the shoe at the top end of lace-up section, has a front end opening which is normally kept closed by an elasticized edge, and can b...

L'invention concerne un dispositif chirurgical pour pied plat. Il est constitué de trois parties, un corps central cylindrique 1 comportant un filetage 7 sur sa partie externe, comportant une tête de blocage 5 en translation, un cône d'expansion 2 comportant un filetage 9 interne à sa partie proximale coopérant avec le filetage 7 du corps central 1, une couronne externe 3 pouvant être expansée ...

FIELD: organic chemistry, pharmacy. SUBSTANCE: invention describes new 8-fluoroanthracyclines of the formula (I) where R is H; R1 is H, OCH3; R2 is H, NH2; R3 is OH, NH2; symbol means that substituents R2, R3 can be in axis or equatorial configuration and groups 8-F and 9-OH are at cis-position; or their pharmaceutically acceptable sal...

The present invention relates to 12,13-dihydroxy derivatives of tylosin, new semisynthetic compounds of the macrolide class, and to a process for their preparation. According to the present invention by the oxidation of 13-hydroxy derivative a 12,13-dihydroxy compound is obtained, which can be subsequently subjected to a series of reactions such as oximation, reduction (catalytic, electrochemical)...

The hopper shaped container mounted on a wheelbarrow chassis (1) comprises flat panels the two side panels (3,4) of which are vertical. The front (5) and rear (6) panels are inclined. The side and front panels are assembled by detachable fixings and the rear panel can be removed by sliding or tipping (8). The rear panel has two lateral articulations (9) in its upper part which are supported on the...

FIELD: hygienic appliances. SUBSTANCE: body fitting cover has layer of porous film and isolating layer of fibrous nonwoven material with increased moisture absorption rate and improved resistance to repeated moistening of surface of material. EFFECT: wider range of usage and improved moisture absorbing properties. 17 cl, 3 tbl, 3 ex

The guard system consists of a series of six plates (2), two for each of the conveyor's three rollers, located symmetrically on either side and welded to roller supports (6, 7, 8). The assembly is fixed to the conveyor frame (9) by screws (13).;

Dispositif pour protéger les points rentrants d'un convoyeur en auge à 3 rouleaux pour les largeurs de bande de 500, 650 et 800.L'invention concerne un...