Abstract: A process for the corrosion protection of copper or copper alloy which process comprises contacting the surface with an aqueous solution of at least one compound of general formula (I), wherein X is N, Y is CR and Z is N, or X is N, Y is N and Z is N or CR or X is CR, Y is N and Z is N, where R is a hydrogen atom or R.sup.1, and R.sup.1 is an alkyl, aryl, aralkyl, halogen, trihalomethyl, amino, heterocyclic, NHR.sup.2, NR.sup.3 R.sup.4, CN, CO.sub.2 H, CO.sub.2 R.sup.5, OH or OR.sup.6 group, where each of R.sup.2 to R.sup.6 independently represents an alkyl, aryl, or aralkyl group.

Abstract: A method and apparatus are provided for controlling the rotation of a turntable relative to a recording head in a disk recording system. A first, voltage signal is generated corresponding to the radial displacement of the recording head relative to a turntable axis, and a second, frequency signal is generated corresponding to the rate of rotation of the turntable. A further voltage signal is then generated which represents the multiplication product of the radial displacement and the rate of rotation of the turntable based on the first and second signals. The rotation of the turntable is controlled in dependence on a difference between the multiplication product and a reference value.

Abstract: Folding methods were developed for a typical commercial microwave popcorn bag to control its linear expansion and enable it to remain centered in a small (less than one cubic foot) microwave oven with a rotating turntable while the bag is being expanded by the gases of the popping corn.

Abstract: A disk recording system for disks such as videodisks or compact disks has a turntable on which the disk is supported adjacent a recording head. A shaft defining the axis of rotation of the turntable rotates in a bearing and that bearing is itself movable about an axis defined by another shaft. The bearing of the shaft is an air bearing and there is a damper unit for damping that movement. There may be a sensor for detecting the rate of rotation of the shaft defining the axis of rotation of the turntable. The radial displacement of the head relative to the axis of the turntable may be determined on the basis of rotation of the other shaft, and the rotation of the turntable controlled on the basis of the product of signals representing the radial displacement and the rate of rotation of the shaft, respectively.

Abstract: A system and method automatically, in real-time, create and maintain records of customer use of a telecommunication network for diverse types of service and costs. Each customer use of the network is collected and tagged in a record as an event for each switching device in the network. Real-time event correlation based upon all tags is performed and combined into a standard record for each event. Additional information, e.g. pricing, tax, service is incorporated into the standard record as a basis for billing the customer for use of the diverse types of services and costs on the network.

Abstract: An apparatus for measuring fluid flow velocity includes structure for varying an energy content of a volume of a fluid at a first pre-selected point to the flow path and structure for detecting the variation in the energy content of the fluid at a second pre-selected point in the flow path. The structure for varying the energy content includes structure for injecting a quantity of liquified gas into the fluid thereby to cause variation in the energy content. A method for measuring fluid flow velocity is also disclosed.

Abstract: Method and apparatus is described for removing oxygen from a can and frothy head inducing capsule of a lightweight two piece can beverage pack storing alcoholic beverage under gaseous pressure. The method involves evacuating the can and the capsule combination and purging with an inert gas such as Nitrogen and retaining the purged condition of the capsule and of the can by filling the can with water. Just before the can is to be filled the can is inverted to pour the water away and is washed in a conventional manner and re-inverted ready for filling. The method may be automated by marshalling cans on a conveyor and purging a large number of cans simultaneously in a batch first of all to the evacuation, then the purging step and then the water filling step. Two batch purging units may be provided and operated out of synchronism to provide a continuous supply of purged cans partly filled with water ready for feeding to the can washing and filling facility.

Abstract: Devices are described for fitting into pressurized individually packaged beverages (typically canned beers, ales and stouts), by which gas at high pressure is stored within the package for jetting into the beverage as the package is opened to atmosphere. One embodiment comprises a length of tube (10) having a gas jetting orifice (14) which in use is submerged below the beverage in a pressurized can having a gaseous headspace, which can be used to charge the tube with gas during the passage of the filled can (16) along a conventional canning line, on which the can is inverted after filling which brings the orifice into the gaseous headspace.

Abstract: A contact lens comprising a corneal section, a vertical axis, and a shape adapted to maintain the lens at an intended orientation. The improvement comprises either a visible horizontal line segment located in the corneal section perpendicular to the vertical axis and/or three visible radial line segments in the corneal section, the first of the line segments located on the vertical axis, and the second and third segments located on either side of the first segment such that the extension of the segments would pass through a geometric center of the corneal section forming two 20.degree. angles. The lens is useful for measuring the rotation of an assymetric lens. Methods for measuring lens rotation using the invention lenses are also disclosed.

Abstract: It has been found that arginine serves to increase the receptivity of cells to lymphokines such as interleukin-2 and interferon. An improved method for treating a mammal with one or more lymphokines is disclosed wherein said improvement comprises administering said one or more lymphokines to said mammal in combination with an amount of arginine effective to increase the receptivity of cells of said mammal to said one or more lymphokines.

Abstract: Sulfur dioxide (SO.sub.2) is absorbed from waste gases by absorbing SO.sub.2 in an aqueous absorbent comprising soluble sulfite in an absorber; stripping the SO.sub.2 from the absorbent; absorbing the stripped SO.sub.2 in a separate absorbent for the SO.sub.2 ; and reacting the thus absorbed SO.sub.2 in a liquid Claus reactor forming sulfur. In a preferred embodiment, the gas from the stripping step is subjected to a condensation step in a heat exchanger boiler where steam ingoing to the stripper is generated.

Abstract: A helical lock for an automatic gun operated by a rotating drum wherein a cking ring and mating end of the chamber have helical surfaces, whereby upon rotating the locking ring to locked position, the chamber is snugly urged into the barrel in its battery position and thus prevent gas leakage therebetween.

Abstract: A railroad disc brake shoe composition is disclosed comprising, in parts by weight:Phenolic resin binder: 25-35 partsCarbonaceous component: 2-12 partsAsbestos fiber: 35-50 partsSilicon carbide: 0.