Abstract: The invention relates to new 3,8-substituted deuteroporphyrin derivatives with various substituents in positions 13 and 17 of the porphyrin skeleton, pharmaceutical agents containing these compounds, their use in diagnosis and therapy as well as process for the production of these agents.

Abstract: Iodine-containing peptides of general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, a, m and q have the meanings indicated in the description, agents containing these compounds, the use of compounds as contrast media as well as processes for their production are described.

Abstract: The invention relates to new diethylenetriaminepentaacetic acid derivatives, their complexes and complex salts, that contain an element of atomic numbers 20-32, 39-51 or 57-83, pharmaceutical agents that contain these compounds and their use as contrast media and antidotes.

Abstract: The invention relates to new dimeric DTPA derivatives, their metal complexes, containing at least one ion of an element of atomic numbers 21-32, 37-39, 42-51 and 57-83, agents containing these complexes, their use in NMR diagnosis and/or diagnostic radiology, radiodiagnosis and radiotherapy, as well as process for their production.

Abstract: Porphyrin complex compounds consisting of a meso-tetraphenylporphyrin ligand of general formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 have varying meanings, and an ion of an element of atomic numbers 21-32, 38, 39, 42-51 or 58-83 as well as optionally one or more physiologically harmless cation(s) of inorganic and/or organic bases, amino acids or amino acid amides are valuable diagnostic agents.

Abstract: Iodine-containing dendrimeric polymers of general formula IA--(X).sub.b (I),in whichA stands for a nitrogen-containing nucleus of basic multiplicity b, andb stands for the numbers 1 to 8 andX stands for a radical composed of ##EQU1## reproduction units S and at most 2.sup.n imaging radicals Z, in whichn determines the number of generations and stands for the numbers 1 to 10,S and Z have various meanings, are valuable X-ray diagnostic agents.

Abstract: For the sealing of a gap between at least two components or groups of components which are movably arranged with respect to one another, particularly of a heat exchanger, a device is indicated in the case of which a strip-shaped sealing body, which is connected with one component, is sealingly and movably guided in a groove of the other component, and in the case of which the sealing body is composed in the manner of layers of elements, in the longitudinal direction of the gap. The layers are arranged to be displaceable and freely expandable, are suspended at one component in a swivelling manner, and are spatially movably guided on the other component by way of the groove, with a clamping effect.

Abstract: Apparatus for the compact assembly of a gas turbine engine with a recuperative exhaust gas heat exchanger wherein inlet and outlet ducts of the core of the heat exchanger are supported by support plates attached to the casing of the heat exchanger. The support plates are connected to the engine casing with capability of relative movement between the ducts and the support plates so that thermally produced expansions and contractions are taken up without stress at the support points of the ducts with the support plates and within the heat exchanger. As a consequence, no expansion joints are necessary in the connection lines.

Abstract: Waxy esters of aromatic alcohols with long-chain carboxylic acids give lubricants and release agents for highly transparent thermoplastics which reduce the transparency of these plastics to a far lesser degree than the previously customary montan wax esters of aliphatic alcohols.

Abstract: A heat exchanger having two mainfold ducts extending in parallel, adjacent relation connected to each other by heat exchange tubes. The manifold ducts are formed by a plurality of duct segments axially aligned one after the other in sealed relation and a support frame is arranged externally of the manifold ducts and is secured to and supports the duct segments individually at one of their ends. Each duct segment is secured to the frame at one of its ends while its other end is guidably supported and allowed to axially expand and contract relative to the end of the adjacent duct segment. This provides favorable resistance to the loads developed during operation as well as simple dismantling of the heat exchanger.

Abstract: A process of manufacturing a spacer element for spaced heat exchange tubes of a heat exchanger in which the tubes are of elliptical cross section and arranged in rows and columns. In the process a band of stranded interwoven fine wires are wound between and on the surfaces of the spaced heat exchange tubes and is fused to the tubes at the regions of contact therewith by a heating operation to form a spacer for holding the tubes in spaced relation. The heating operation can be carried out by heating the tubes and band in an oven, either in a vacuum or with a protective gas.

Abstract: For removing foreign solids, for instance contaminants, from pulpers in which waste paper, in particular with a share of more than five percent, for instance more than ten percent, of solids foreign to paper, is pulped or suspended and the suspension or slurry is the withdrawn through a screen zone for further processing, it is proposed according to the invention to at least partially withdraw the suspension or slurry from the pulper in periodic time intervals and, subsequent to the, in particular each, partial withdrawal of the suspension or slurry, to loosen, hydrodynamically or by means of fluids, the foreign solids accumulated on one side, in particular the upper side, of the screen zone, whereupon the dirt slurry obtained by hydrodynamical loosening is fully mechanically discharged from the pulper prior to newly charging the pulper. The hydrodynamical loosening of the foreign solids is preferably effected under backflushing through the screen zone.

Abstract: A method for manufacturing a multiple wire brush contact includes the steps of stamping a continuous strip of material so as to define a series of spaced blanks, each including a cross bar and a base mounting plate, separating side carrier portions, welding and soldering contact wires onto the cross bar portions, cutting and forming the contact wiper. The multiple wire brush contact assembly thus includes a base mounting plate that is separate from the cross bar and wire spring and that is used to handle and mount the assembly in a cooperating receiving space in a rotor or other element.

Abstract: The wear on machine components is reduced during processing of solids concentrates containing abrasive solids if solids concentrates in which the carrier material has a resistance to shear and/or deformation which is the same as or higher than that of the polymer to be provided with the solids concentrate are employed.

Abstract: An aqueous primer based on alkali-soluble acrylic resins and siliconates, especially suitable for strongly alkaline substrates, for example, asbestos cement articles, is provided. The primer is characterized by stability to storage and good compatibility with the substrate and with customary coating agents, and it brings about good water repellence, good stabilization of the substrate and a good binding between the substrate and the final coating.

Abstract: Electrical connectors for use with relatively spaced printed circuit electrical conductors and more especially of the type contained on flexible flat conductors wherein the connectors are formed on a continuous mounting strip that retains the same in relative spaced relationship corresponding to the relative spacing of the electrical conductors such that a series of electrical connectors may be electrically engaged simultaneously in one operation with respective ones of the electrical conductors without disturbing or otherwise affecting the continuous insulating integrity between the relatively spaced electrical conductors.

Abstract: In unloading a press, it is desirable to provide automatic unloading without the need for operators, even in situations requiring a definite stacking order in containers located next to the press. To achieve this automatic unloading, extraction grippers and a carrier frame are provided which can be moved in three directions which are at right angles to each other by servo drives controlled by a continuous-path numerical control unit.

Abstract: In press line operations, a workpiece conveyor device is necessary to carry workpieces from one press to another. Preferably, this conveyor should be readily removable for repairs, adaptable to a large number of presses, and readily reprogrammable to adapt to a variety of workpieces. To achieve this, a conveyor is provided having a cross member mounted on a movable carriage which moves along a track on a frame bridging the intermediate space between two presses. Horizontal movement of the carriage along the track, vertical movement of the cross member on the carriage, and movement of a positioning device for the workpieces is provided by setting drives controlled by a continuous-path numerical control unit. For repairs, the entire frame can be moved out of the intermediate space in a direction at a right angle to the direction of workpiece travel.

Abstract: Preparations of insoluble colorants, especially pigments, are obtained by distributing the colorant in molten polypropylene wax having a viscosity of 0.5 to 5 Pa.s, determined at 170.degree. C., and an isotactic proportion of 40 to 90% by weight. These preparations are easily dispersible in polyolefins and especially useful for dyeing polypropylene in the mass.

Abstract: Fuel dispensing apparatus for dispensing fuel to a gas turbine engine is provided which includes a fuel metering slide valve having a control slide piston which directly controls an opening for supply of fuel to a gas turbine engine. A piston-cylinder servo-mechanism is provided for controlling flow of a servo fluid which acts on the control slide piston to assist in the movement thereof between respective positions. An auxiliary control slide piston of the servo-mechanism is in turn acted upon by supply of pressure to respective oppositely facing pressure surfaces from an electro-hydraulic converter. The electro-hydraulic converter is controlled by an electronic control mechanism responsive to control an engine operating parameters.