Abstract: An upper grinding conical shaped member rolls around a lower grinding surface, granular material to be ground being fed onto the grinding surface through a hole in the apex of the upper grinding member and being deflected into the path of the upper grinding member by a pip located at the center of the grinding surface.

Abstract: This invention provides hardenable compositions useful as construction media for a wide range of applications. Particular utility is found in the dental and medical arts where such compositions are highly suitable for the formation and construction of denture base, denture baseplates, denture liners, denture repair, custom trays, veneering for crowns and bridgework, artificial teeth, veneers and repair for natural teeth, and tooth restorative fillings. Such materials having improved impact strengths and elastic moduli when hardened are disclosed which include rubber-modified polymer.

Abstract: Machined steel blocks 1 and 2 have ridges 20 facing valleys in the opposite block. Polypropylene tape 3 to be heat-treated has sliding contact transversely over each ridge on each block. The blocks are heated by heaters 4. The gap between the blocks is adjustable to suit the material being processed. The gap is large enough so that the tape passing between the blocks is not constrained to deflect from coplanarity by more than its own thickness.

Abstract: The attenuation and phase change of a communication channel have to be estimated for near-maximum-likelihood detection and this presents severe difficulties where rapid fading occurs especially in communication between mobile stations in cellular radio. A number of vectors are stored which represent possible sequences of received data symbols and these vectors are expanded on receipt of each further digital sample. Costs, representing a measure of the likelihood that sequences are correct, the lower the cost the higher the likelihood, are then derived for each vector on the basis of stored prediction of channel performance. Next the earliest data symbols in the vector with lowest costs are output as detected symbols and then the vectors with lowest costs as selected for storage in place of the original vectors. New channel predictions are formed from channel estimates for the current sample and stored for use in the next iteration.

Abstract: A surveying and mapping implement indicates the level differences of the ground over which it travels, in relation to the distance travelled. It comprises a carriage consisting of a swivelling front wheel, two center wheels attached to the outside of a U-shaped vertical frame, and two rear wheels connected to the U-shaped frame by means of a thill and a universal joint positioned co-extensive with the axis of the center wheels. The universal joint permits the rear wheels to move up and down and sideways, as well as to twist in relation to the center wheels. The wheel base between the center wheels and the front wheel is identical with that between the center wheels and the rear wheels, in order to facilitate calculations.

Abstract: A method for epitaxial growth of compound semiconductor containing three component elements, two component elements thereof being the same group elements, in which three kinds of compound gases each containing different one of the three component elements are cyclically introudced, under a predetermined pressure for a predetermined period respectively, onto a substrate enclosed in an evacuated crystal growth vessel so that a single crystal thin film of the compound semiconductor is formed on the substrate.

Abstract: A prosthetic device (10) suitable for use in the treatment of stress incontinence in women by location as a cuff around the urethra, to elevate the bladder following prolapse, comprises a body (11) composed predominantly of a cross-linked synthetic polymer hydrogel having a water content of the order of 90%, and preferably about 95%, by weight. The hydrogel can be homogeneous through the body but in this event the body suitably has a local reinforcement (12), such as by embedded plastics material mesh, in at least one relatively small edge portion to enhance its tear resistance in relation to sutures (13) passed therethrough. The body is suitably of kidney shape having dimensional proportions of approximately 5.times.3.times.1. cms.

Abstract: A postforming process for an oriented film or tape of polymer material, which process comprises subjecting at least one layer of such an oriented film or tape to a pressure greater than ambient pressure while heating the oriented film or tape at a temperature at which partial melting thereof occurs but which does not exceed 145.degree. C.

Abstract: Mixed scrap metal pieces 6 are sorted in a fluidised hindered settler containing sand, through which the pieces settle at a differential rate. The sand is fluidised by air from 20 and vibration-driven around a circular trough 2. A depthwise partition 14a sorts the pieces according to settling rate, whereafter they are removed up separate ramps 14 and 16. The sand is levelled preparatory to receiving the pieces 6, and only afterwards is it fluidised.

Abstract: A synthetic peptide, suitable for use in vaccination against or diagnosis of a disease caused by an enterovirus and especially by a poliovirus, is the peptide coded for by codons 286-290 in the RNA sequence coding for the structural capsid protein VP1 of poliovirus type 3 Sabin strain or by equivalent codons of another enterovirus or is an antigenic equivalent thereof, the numbers of the codons being counted from the 5'-terminus of the nucleotide sequence coding for the VP1 capsid protein.

Abstract: Powdered FeMn alloy is leached with liquid bismuth, which alloys preferentially with the manganese to form liquid BiMn alloy, leaving behind iron powder. The BiMn is then electrorefined; an anode 1 selectively ionises the manganese, which is carried to the cathode 3 where it is reduced to the metal and collected in a stream of molten aluminium as AlMn master alloy.

Abstract: A two-dimensional video data acquisition system comprising: video detector apparatus for scanning a visual scene; controller apparatus for generating scan pattern instructions; system interface apparatus for selecting at least one scan pattern for acquisition of video data from the visual scene, the scan pattern being selected from a plurality of such patterns in accordance with the scan pattern instructions; and scan-video interface apparatus comprising random scan driver apparatus for generating scan control signals in accordance with the selected scan pattern, the video detector apparatus scanning the visual scene in accordance with the scan control signals to provide an output to the system interface such that an intensity data map is stored therein, the controller apparatus performing data processing of the intensity data map in accordance with a predetermined set of video data characteristics.

Abstract: The invention provides an insecticidal composition comprising Diazinon ensulated in microcapsules, the microcapsules having an encapsulating wall formed essentially from the reaction product of toluene diisocyanate and a polyfunctional amine, and further provides a process for encapsulating Diazinon in a microcapsular formulation comprising providing an aqueous phase containing a non-basic emulsifier, providing an organic phase containing toluene diisocyanate and Diazinon, combining the aqueous and organic phase to form an oil in water emulsion, and adding an aqueous solution of a polyfunctional amine with agitation to the emulsion, whereby the amine reacts with the toluene diisocyanate to form microcapsular envelopes about the Diazinon material.

Abstract: A process for the continuous preparation of an oriented film of a polymer material comprising shearing at least one film of a solution and/or gel of the polymer material between at least one set of two solid surfaces which are in motion relative to one another. At least one of which surfaces is endless, so as to cause by the shearing, solidification of the polymer material from the solution or gel to a degree sufficient that a coherent, oriented film of the polymer material is formed on one of the surfaces. The film is sufficiently coherent so as to be capable of being removed from the surface on which it is formed in a continuous manner.

Abstract: A sensitive magnetometer for determining the strength of a very weak magnetic field having at least one Josephson junction through which current induced by the magnetic field and modulated in accordance with a modulation magnetic flux which varies periodically, is conducted. Harmonic separating means separately detects a selected even harmonic component from the current flowing in the Josephson junction to obviate the need for null flux calibration.

Abstract: The apparatus comprises a tubular member that is adapted to be attached to the working end of a dental handpiece and is used to contain and direct material dispensed from the handpiece in order to reduce the amount of airborne particles emitted into the atmosphere by the handpiece and to accurately direct the dispensed material to the desired area. The apparatus is adapted to provide a reference point for the practitioner in establishing the optimum working distance of the handpiece from a particular working area in the mouth when the handpiece is used. An improved dental handpiece using the apparatus of the invention and a method of using the apparatus are also provided.

Abstract: The invention relates to a method and device for an emergent treatment of hypovolemic shock caused by loss of blood. According to the new method an elastic covering tube is applied onto the injured part of a patient's body, said tube possessing two main characteristics: (1) it is twisted along its horizontal axis as a rolled-up tube the end of which is rolled onto said body parts and (2) the material used for the elastic tube has to provide a pressure of between 100 to 400 mm Hg and to possess a critical elasticity coefficient. The critical elasticity coefficient being defined by a given formula which correlates the thickness of the material, unstretched radius and length of the tube, and length and radius of the injured part of the body to be covered.

Abstract: A head holder for holding the head of a human subject while imparting to it an acceleration. The holder comprises a helmet-like member at least partly surrounding subject's head, which helmet-like member is adapted to be set in motion by drive means and is provided with at least one head-clamping member appliable to selected locations on the subject's head. The head-clamping member is adapted to transfer the accelerating force produced by the drive means to the head. The arrangement being such that an effective component of the accelerating force applied by the head-clamping member to the head via selected locations thereon acts on the skull bone underneath the locations. A method for examining the vestibular system of a human subject is also described.

Abstract: This invention provides compounds useful for treating coronary insufficiency, hypertension, angina pectoris, cardiac arrythmia, heart attack or coronary vasospasm and represented by the general formula: ##STR1## R.sub.1 and R.sub.2 are each independently selected from the group consisting of lower alkyl, N-alkylphthalimido and derivatives of N-alkylphthalimido, wherein said N-alkyl group comprises at least 2 carbon atoms;A is a straight or branched chain hydrocarbon moiety containing from 1 to 12 carbon atoms and from 0 to 2 double bonds;R.sub.3 is selected from the group of radicals consisting of hydrogen, --NH.sub.2 and --NCS;R.sub.4 is an aryl or heteroaryl radical; andR.sub.5 is a lower alkyl radical or A--R.sub.3 ; provided that when R.sub.3 is a hydrogen radical at least one of R.sub.1 and R.sub.2 is not lower alkyl, including both pure enantiomers as well as mixtures thereof; andpharmaceutically-acceptable salts thereof.

Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x,y,z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.