The present invention is related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains and wherein said segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in said regions in high and low concentrations of superabra...

The static solar oven (SSO) is a cooking appliance that uses the rays of the sun as a source of energy. In contrast to the portable solar oven, the static solar oven is of greater weight and size and is intended to be installed in an area where it will remain and be used practically permanently although it can easily be moved from one point to another within the same area. It consists of a cooking...

electronic engineering; light sources, plasma displays, cathode-ray tubes. SUBSTANCE: autoemission cathode is manufactured from at least one body containing first substance. Procedures include organizing roughness on emitting body surface, adding ions of second substance having low work function to emitting surface of body, and modifying emitting surface by exciting autoemission when applying vari...

Process for the prepn. of highly insulating polystyrene (copolymer) cellular plastic by (1) melting the polymer, pref. in an extruder, (2) adding and blending a blowing agent, pref. under pressure and (3) extruding the material through a mouthpiece whilst depressurising and cooling, uses a blowing agent comprising a chlorine-free halogenated hydrocarbon (e.g. HFC cpd.), low mol. wt. alcohol and wa...

A method for determining the presence of an analyte in a fluid is described along with an apparatus specifically designed to carry out the method. The method involves taking a reflectance reading from one surface (15) of an inert porous matrix (11) impregnated with a reagent that will interact with the analyte to produce a light-absorbing reaction product when the fluid being analysed is applied t...

The means is of a data protecting means (310) for preventing erroneous writing in a data-holding circuit (307). A data protecting circuit (311) receives a data protect set/release select signal Sa outputted from a processor (330) and starts a second clocking means (316). When the second clocking means (316) measures a period T2, the data protecting circuit (311) detects the level of a chip select ...

Poly(lactones) are provided. The poly(lactones) are obtained by polymerization of a lactone with an initiator system comprising at least one polyfunctional initiator. The poly(lactones) have a shear viscosity at some temperature in the range of from 35 to 45° C. above the melting temperature of the poly(lactone) of at least 6 kPas at 0.1 s-1 shear rate and no greater than 3.5 kPas at 100 s-1 shear...

The present invention provides carboxyvinyl polymer having Newtonian viscosity, ophthalmic preparations containing the polymer, a process for preparing the polymer, and a vehicle for ophthalmic preparations containing the polymer. By using the polymer in a vehicle, an ophthalmic preparation having a low viscosity and good permeability of a drug can be obtained.

A steerable rotary drilling tool includes a drill bit mounted on the lower end of a housing by a drive shaft having an articulative coupling that allows the bit's rotation axis to be inclined relative to the rotation axis of the housing, an eccentric weight in the housing that maintains the bit axis pointed in only one direction in space as the bit is turned by the housing, and a clutch system tha...

The system consists in the following formula: CaO + H2O = Ca(OH)2 + 15,100cal. with an adequate addition of quantity of contaminated toxic and noxious waters also from metals in solution, with acceptable costs on the market and without contaminated residual reworks as the contaminated waters are transformed by liquids in insoluble solids incorporated in the lime without causing damage to the ambie...

Polymeric materials, particularly polyethylene (PE) are crosslinked by using a new continuous method based on photo-initiated crosslinking with UV-light. In the method of processing, the polymer, after mixing with suitable crosslinker, photo-initiator, and possible stabilizers, is extruded into a suitable shape whereupon the still warm, soft melt, directly after extrusion ("on line") is crosslinke...

Fuel oil compositions containing specific mixtures of esters of unsaturated monocarboxylic acids show improved lubricity properties.

Fuel oil compositions containing specific mixtures of esters of unsaturated monocarboxylic acids show improved lubricity properties.

Fuel oil compositions containing specific mixtures of esters of unsaturated monocarboxylic acids show improved lubricity properties.

A connecting arrangement and a process for its production, wherein the connecting arrangement consists of a first and a second separate part which are constituents of a medical system, in which at least one section of a surface made of a first plastic material on the first separate part and at least one section of a surface made of a second plastic material on the second separate part in a contact...

A comentitious composition of the setting type which can be kept in a ready-mixed state and which can be caused to set and harden upon introduction of an accelerator with reproducibility and set time predictability. The cementitious base composition contains calcium sulfate hemihydrate as a principal filler material and certain non-calciun bearing phosphate additives which prevent setting action i...

Disclosed is a solid state disk emulator system for significantly improving access time, i.e., improving both the seek time and the rotational latency. The disk emulator complies with the SMD interface convention and thus to the central procssor and the SMD disk controller, the disk emulator appears as a disk with virtually a zero access ttime. In one embodiment, the primary systems of the disk em...

The invention relates to three-layer vascular prostheses comprising an internal layer 1, a middle layer 2 and an external layer 3 which is characterized in that the middle layer 2 is made from a physiologically non-resorbable, porous material, and the internal layer 1 and the external layer 3 are self-supporting and are made from a physiologically resorbable, fibrillar material, and are tanned. Th...

A tibial element for a replacement knee prosthesis comprising a tibial tray (1) provided with one or more bearing components (30), and a stem which can be attached to said tray by a tapered spigot and socket (55) construction characterised in that the lower portion of said tray has a shaped engagement feature (3) intended for engagement with the proximal subcondylar area of the tibia of the user, ...

A compound of formula (II) wherein R is an acidic group; m is an integer of 1 to 3; n is zero or an integer of 1 to 3; A is an enzymatically hydrolyzable spacer; and X is a biologically active compound; or a pharmaceutically acceptable salt thereof, for use as an antiproliferative, in particular anti-tumor and anti-angiogenic agent, and anti-inflammatory agent, is provided.