Abstract: The production of linear polyester by the interchange of ester radicals or esterification and polycondensation of multivalent alcohols with multivalent carboxylic acids takes place by means of catalysts. In order that the catalyst features the lowest possible content of catalytically active metal compound, the carrier substance that forms the heterogeneous phase comprises particles of the finest grain and of porous structure and features a surface of great inner, reactive and/or coordinated centers, whereby a catalytically active metal compound is adsorbed in the pores.

Abstract: Compound of the formula I in which Q and Ar have the meanings indicated herein, and their salts, exhibit actions on the central nervous system.

Abstract: An electric contact assembly in combination with a cartridge to be fired from a weapon barrel. The cartridge has a cartridge case including a metal bottom having an externally exposed outer face; and an electronic unit disposed in the cartridge case. The electric contact assembly includes a first contact arrangement for establishing an electric connection between the electronic unit and an evaluating and control apparatus situated externally of the cartridge. The first contact arrangement includes a contact ring disposed in the cartridge bottom and surrounding the longitudinal axis of the cartridge. The contact ring has an outer face which is approximately flush with the outer face of the cartridge bottom. An insulation electrically insulates the contact ring from cartridge bottom. A second contact arrangement establishes an electric connection between the electronic unit and the evaluating and control apparatus.

Abstract: An electric contact assembly in combination with a cartridge to be fired from a weapon barrel. The cartridge has a cartridge case including a metal bottom having an externally exposed outer face; and an electronic unit disposed in the cartridge case. The electric contact assembly includes a contact arrangement for establishing an electric connection between the electronic unit and an evaluating and control apparatus situated externally of the cartridge. The contact arrangement includes a contact ring disposed in the case bottom and surrounds the longitudinal axis of the cartridge. The contact ring has an outer face which is approximately flush with the outer face of the case bottom. An insulation electrically insulates the contact ring from the case bottom. A magnetic field sensor emits a signal upon closing a breechblock of the weapon in which the cartridge is positioned. A switch is connected between the electronic unit and the contact ring.

Abstract: A weapon system, comprising a fire control system (1) and an ammunition unit (3) that can be fired from a weapon and that has at least one electronic switching device (8) that can be actuated by the fire control system (1). To achieve a constant, secure and simple monitoring of the link between the fire control computer (1) and the electronic switching device (8) to be triggered of the respective ammunition unit (3), a bidirectional data transfer is conducted via the two supply lines (15, 16) that are necessary for the voltage and current supply of the electronic switching device (8) of the respective ammunition unit (3). In the process, data are transmitted from the fire control system (1) to the electronic switching device (8) by a voltage modulation of the supply voltage, and data are transmitted from the switching device (8) to the fire control system (1) by a current modulation of the operating current.

Abstract: A magnesium based alloy for high pressure die casting, comprising at least 83 wt % magnesium; 4.5 to 10 wt % Al; wt % Zn that is comprised in one of the two ranges 0.01 to 1 and 5 to 10; 0.15 to 1.0 wt % Mn; 0.05 to 1 wt % of rare earth elements; 0.01 to 0.2 wt % Sr; 0.0005 to 0.0015 wt % Be; and calcium in an amount higher than 0.3 (wt % Al -4.0).sup.0.5 wt % and lower than 1.2 wt %. The alloy may further comprise incidental impurities. The alloy may comprise at least 88 wt % magnesium, 4.5 to 10 wt % Al, 0.1 to 1 wt % of rare earth elements. The alloy may contain 5 to 10 wt % Zn and 0.1 to 1 wt % of rare earth elements, and wherein the zinc content is related to the aluminum content by the formula: wt % Zn=8.2-2.2 in (wt % Al -3.5).

Abstract: A socket (10) for connecting a plug (15) to installed mains lines (17) has its base (12) provided with a casing (18) in which an electronic bus coupler (BA) is arranged. The bus coupler (BA) is connected to a bus line (19) also installed. Signals generated by the bus coupler (BA) are converted into optical signals by a photoelectric converter (21) and transmitted to the plug (15) The plug (15) comprises the end of an optical wave-guide (23) which extends through the connected cable (24) besides the electric supply lines. Thus it is achieved that the signals are present as optical signals in the cable (24) and cannot be influenced by electric disturbances.

Abstract: A method for transmitting information signals in a subscriber terminal network wherein the network is between an exchange and the individual subscribers and which is used in the course of the worldwide expansion of the digital telecommunication networks for the transmission of digital signals. In order to be able to guarantee optimal transmission rates, measurements of the transmission parameters of the subscriber terminal lines are carried out and, according to the standard provided by these measurements, a maximum bit rate is determined for each subscriber terminal line.

Abstract: Prior art redundancy of a network for information transmission is that individual components such as, for example, lines, switching networks, control computers are doubled. However, this has disadvantages particularly in view of economic feasibility. In order to be able to utilize simple, non-redundantly fashioned components, a redundant logically identical node is used (SN1',SN2',SN3') in addition to each node (SN1,SN2,SN3). Also each trunk (L1,L2,L3) between the nodes is supplemented with a redundant trunk (L1',L2',L3') potentially conducted via a different physical path. Both trunks are linked via at least one combiner/splitter element.

Abstract: A new type of folding box is disclosed, which is designed for redispatching to a second location, after it has been received at a first location. This box, which can be made from a single flat pre-cut blank, of cardboard or other suitable material, has two lids: an inner lid, and an outer lid. The outer lid is printed, stamped, or affixed with advertising information, a first mailing address, or other useful lettering, to facilitate a first delivery or sale. The inner lid, which is initially covered and preferably hidden by the outer lid, is printed or stamped with a second lettering, such as a second mailing or delivery address. The user purchases or otherwise receives the complete box, including the outer lid, and carries out any desired function with the contents of that box. For example, if the box contains collection jars, for holding blood, hair, water, or soil samples, the user would fill the jars with such samples or specimens.

Abstract: Disperse Dyestuff Mixtures comprising C.I. Disperse Red 82 of the formula (I) ##STR1## and one or more dyestuffs which differ therefrom, of the formula (II) ##STR2## wherein D denotes the radical of a diazo component of the formula ##STR3## or D denotes the radical of a diazo component from the group consisting of 5,6-dichlorobenzothiazol-2-yl, 6,7-dichlorobenzothiazol-2-yl, 6-nitro-benzothiazol-2-yl or 5-nitrothiazol-2-yl, and the other substituents have the meaning given in the description,are stable to spray-drying and have outstanding use properties, in particular in the dyeing of hydrophobic fiber materials.

Abstract: An optoelectronic transmission-reception device has a semiconductor laser and reception diode fashioned monolithically integrated in a semiconductor chip whose laser resonator is formed by two outer limiting surfaces of the semiconductor chip arranged opposite one another. The laser light emitted by the semiconductor laser is incident into a light waveguide coupled to one limiting surface of the semiconductor chip at the light waveguide side. The coupling of the light waveguide to the semiconductor laser and reception diode fashioned monolithically integrated in the semiconductor chip is fashioned such and the limiting surface of the semiconductor chip at the light waveguide side is of such a nature that, given an adequately low reflectivity of the laser emission emitted by the laser that is required for adequate assurance of the laser function, an optimally large part of the radiation received via the light waveguide is incident into the semiconductor laser and reception diode.

Abstract: A wavelength-tunable laser device has an active part comprising an active laser region for generating a laser emission with a predetermined emission wavelength, and a tuning part comprising a tuning region allocated to the active laser region and capable of tuning the emission wavelength of the laser light emitted by the active region. The active part is charged with a chronologically variable modulation current that controls the intensity of the emitted laser emission, and the tuning part is charged with an electrical tuning current for controlling the emission wavelength of the emitted laser light. The active part controls the intensity of the emitted laser light and the tuning part is charged with an electrical tuning current for controlling the emission wavelength of the emitted laser light. The tuning current that is supplied to the tuning part and controls the emission wavelength of the emitted laser light is directly derived from the chronologically variable modulation current.

Abstract: A subscriber network is operated bidirectionally and has one or more coaxial line tree networks which are shared in each case by a plurality of subscriber-end network termination units and extend between such subscriber-end network termination units and has a higher level connection unit. The coaxial line tree network or networks can be connected in each case, via a converter device, to an optical waveguide, preferably of an optical waveguide tree network, containing optical splitters, and can be connected via said optical waveguide or waveguides to the associated connection unit, for the purposes of securing data. The public key is determined in each case from a secret key prescribed in the subscriber-end network termination unit.

Abstract: A suction catheter assembly has an aspirating catheter that is enclosed along its length within a protective sleeve. The catheter extends from a vacuum connecting member, which can be connected to a suction source, and a patient connecting member which has a coupling for connection to a tracheal tube and two side ports for connection to ventilation equipment. A one-way valve in the patient connecting member forms a sliding seal with the catheter and allows trapped gas in the sleeve to escape into the patient connecting member when the catheter is advanced.

Abstract: A medico-surgical suction system has a container with an outlet connected to a vacuum pump and an inlet connected to a suction catheter via a dual-lumen tube assembly one end of which is connected to the container and the other end of which is has a suction control and a coupling for the catheter. A valve located in the outlet of the container is connected to the suction control via a minor lumen of the tube. A side lumen enables the vacuum pump to apply reduced pressure to one end of the valve which holds the valve off against the action of a spring. Actuation of the suction control allows air to flow to the valve via the minor lumen so that the effect of the reduced pressure is overcome and the spring opens the valve.

Abstract: An optical switching network for through-connecting optical message cells has at least one optical space-switching multiple connected at its input side to the inputs thereof and has at least one optical transit time harp formed with a plurality of light waveguides with graduated transit times of whole-number, n-multiples (with n.gtoreq.0) of the message cell duration. The outputs of a transit time harp following a space-switching multiple are respectively combined to a concentrator output of the optical switching network.

Abstract: A suction catheter assembly for use in removing undesirable fluid from a patient includes an aspirating catheter having a proximal end and a distal end, the distal end being suitable for insertion into a patient; a vacuum connecting member located in the vicinity of the proximal end of the catheter; a patient connecting member mounted to surround the aspirating catheter in the vicinity of the distal end of the catheter, the patient connecting member housing a wiper/seal member sealingly engaging with the outside surface of the catheter; a protective sleeve surrounding at least the majority of the length of the catheter and extending between the vacuum connecting member and the patient connecting member, the protective sleeve being adapted to permit the distal end of the catheter to be extended from the protective sleeve into the patient and to be withdrawn from the patient; and a separate one-way valve member within the patient connecting member so that the one-way valve permits gas flow therethrough from ins

Abstract: A closed system suction catheter assembly has an aspirating catheter with a radially-projecting portion or flanges at its distal end. The catheter extends through a patient connecting member which is internally shaped to cooporate with the projection on the catheter so that, when the catheter is pulled proximally to its full extent, the projections seal within the patient connecting member.

Abstract: A member of silicon, having at least two regions of single-crystal silicon having mutually different crystal orientations for anisotropic etching to produce advantageous profiles, and method for the manufacture thereof. In such a member of crystalline silicon, such as employed in silicon microtechnology, both adjustment aids for round and cylindrical members as well as adjustment aids for rectangular members can be fashioned using only the basis of anisotropic etching. The two regions can be defined by two wafers of differently oriented, single-crystal silicon that have their flat sides joined to one another.