Absorbent structures comprising a continuous matrix of hydrophilic fibers, having dispersed therein particles of a water-insoluble hydrogel, are disclosed. The distribution of hydrogel particles is showed toward the back face of the structure, resulting in the back face half containing at least 60% of the hydrogel material.

A shadow mask is provided which can provide a precise patterning to a deposit at process temperature without destruction of the shadow mask itself. The shadow mask consists of a plurality of metallic strips having a series of interconnecting small arched bridges that hold the strips of the mask together. The shadow mask is used in a process for depositing electrode structures in an electroluminesc...

Electric cigar lighters normally have a bimetallic gripper (20) which grips the edge of the heating element (22) in order to heat the cigar lighter and via which the current flows. If, because of a functional defect, the gripper (20) does not release the heating element (22), the cigar lighter overheats, leading to its destruction. In the case of known cigar lighters, a device is provided by means...

The invention concerns a procedure for oxidising substrates of Gallium Arsenide. In particular, according to the present invention, the oxidation of Gallium Arsenide substrates tends to compact oxide layers which are compatible with the technology for producing active semiconductor devices. The oxide is formed by means of a reactive gas discharge onto a substrate whose temperature has been raised ...

A roller-blind box having a casing (1) of a width (b) corresponding to the nominal thickness of the masonry, and especially made of breeze concrete, surrounds in one piece an insert body composed of heat-insulating material (6), such as foam. The heat-insulating material (6) leaves free a cavity (7) which serves for receiving the roller-blind skirt (9) rolled onto a shaft (8), and the vertical cen...

New compounds of formula IX are monomeric liquid crystals which are photopolymerizable to polymeric films having fixed optical characteristics R1 is H or CH3; A is -R2-, -R3O-, or -R4O-; R2 is alkylene having 3-14 methylene or alkyl- substituted methylene groups; R3 is alkylene having 2-14 methylene or alkyl-substituted methylene groups; R4 is an alkylene ether, diether or triether havin...

The desired structures are produced on the surface by means of masks, coatings or other covering means, the objects thus treated are exposed in a glow discharge zone to the action of reactive, halogen-containing gases, the covering means is removed after the end of the action, the objects are metallised by known physical methods and, after this metallisation, the objects are transferred for produc...

A process and apparatus is provided whereby metal is deposited onto articles such as plastics, ceramics and the like for producing printed circuit boards, metal plated ceramics, shielded articles and other plated articles, as part of a generally or substantially continuous process. Prior to plating, also as part of a continuous process while the boards are being generally continuously and horizont...

PURPOSE:To prevent the occurrence of the unnatural action even in case of animation by providing a data comparator, a control circuit for writing and reading and a static picture detecting circuit besides a frame memory, a writing address generating device and a reading address generating device. CONSTITUTION:A data comparator 16, an address control circuit 20 for writing or reading for a frame me...

Protective coating powder comprising a polyglycidyl ether of bisphenol A and trimellitic anhydride has improved shelf stability when it contains a hindered nitrogen-containing compound such as N,N-diethylaniline.

In order to ensure reliable endotracheal intubation anaesthesia there is required a tube which blocks automatically when the blocking system fails or can be blocked manually. In the commercially available tubes re-intubation is necessary if the blocking balloon fails, and this is not possible in every type of operation. In addition, re-intubation is also a renewed risk for the patient. Using the d...

An expandable blend of a linear olefinic polymer and a crosslinkable polymer for production of lightly crosslinked foamed polymers and a process for the preparation thereof is provided. The presence of a crosslinkable polymer component in the blend increases the melt strength of the linear olefinic component so that conventional melt processing techniques may be utilized to produce foamed polymers...

Described is a packaging for liquid, made of cardboard, which is made impermeable to liquid by means of a plastic coating over its surface. It has side-walls, base and top wall (5), connected to one another by folded and/or sealed seams. A pouring aperture is located in top wall (5) close to the edge line, and can be torn off and has a separate plastic strip (8) covering the pouring aperture and b...

A video signal control circuit having a memory, a write address generator for generating a write address data supplied to the memory, by which an input digital video signal is written in the memory at the address represented by the write address data, a read address generator for generating a read address data supplied to the memory, by which a controlled digital video signal is read out from the ...

A video signal processing circuit adapted for use in TV receivers. The circuit includes an intermediate frequency amplifier circuit having signal amplifying transistors, a synchronous detection circuit adapted to produce the carrier signal and to produce a detection signal by making use of the reproduced carrier signal, a first gain control circuit adapted to deliver a gain control signal to the i...

An electrofusion coupler sleeve for use in connecting together two plastics pipes by fitting the ends into opposite ends of the sleeve and passing an electric current through a resistance heater embedded in the sleeve adjacent its inner surface to fuse together the pipes and the sleeve, incorporates visual indicating means for indicating if the electrical energy supplied has been adequate for prop...

A multistage amplifier with a low noise figure linearly amplifies an input signal having a level which varies over a wide range. The first stage of the amplifier provides a low noise figure and sufficient power gain to ensure overall low noise performance. An interstage amplifier is protected from saturation by first and second variable attenuators, which are controlled by a level detector. The le...

The present invention "portable group filtration apparatus for obtaining drinking water from contaminated surface water, in particular a filtration unit comprising a hand pump, adaptor and disposable sterile filter therefor", relates to a treatment apparatus which permits improved clarifying and/or sterile filtration versus known pressure filtration systems having pneumatic piston displacement pum...

Compounds of formula (I): (I) or a pharmaceutically acceptable salt thereof, wherein m is 0 to 3; n is 1 to 5; R1 is hydrogen, or C1-6 alkyl; R2 is hydrogen, C1-4alkyl, -(CH2)p-NH2 wherein p is 1 to 4, or -NHCOR, wherein R5 is C1-4 alkyl; R3 is hydrogen or C1-6 alkyl; R4 is C1-4alkyl, C1-4 alkoxy, halogen or CF3; and X is CH2 or S. having useful pharmacological activity, compositions co...