Abstract: The present invention relates to an aptamer not binding to the receptor-binding domain of the SARS-CoV-2 spike glycoprotein nor inhibiting the interaction of the receptor-binding domain (RED) of spike glycoprotein with angiotensin-converting enzyme II (ACE2) and/or comprising or consisting of a nucleotide sequence SEQ ID NO: 1, a composition comprising the aptamer, and the use of the aptamer in the detection of SARS-CoV-2 or diagnosis or treatment of a SARS-CoV-2 infection.

Abstract: A device for measuring the pressure at the test gas inlet of a mass-spectrometric leak detector, wherein a mass spectrometer is connected to the inlet of a high vacuum pump, having its outlet connected to the inlet of a pre-vacuum pump, wherein the inlet of the pre-vacuum pump is connected to the test gas inlet, and wherein the inlet of the pre-vacuum pump and at least one intermediate inlet of the high vacuum pump are connected to each other by a connection line comprising a flow throttle.

Abstract: A device for measuring the pressure at the test gas inlet of a mass-spectrometric leak detector, wherein a mass spectrometer is connected to the inlet of a high vacuum pump having its outlet connected to the inlet of a pre-vacuum pump, wherein the inlet of the pre-vacuum pump is connected to the test gas inlet and wherein the inlet of the pre-vacuum pump and at least one intermediate inlet of the high vacuum pump are connected to each other by a connection line comprising a flow throttle.

Abstract: The disclosure relates to a lighting unit for an aircraft interior having a floor with a baseplate fastenable to structure of the aircraft, and having a receiving region that faces away from the structure in a fastened state. An OLED light source having one or more OLEDs is arranged in the receiving region. The lighting unit also has a lens arranged on a side of the OLED light source facing away from the baseplate, and a frame mechanically retained in the receiving region by plug contacts such that the OLED light source and the lens are fastened in the receiving region. The plug contacts include electrical and mechanical contacts, wherein the OLEDs are supplied with electricity by at least one controllable driver, and wherein the contacts supply electricity to the OLED light source.

Abstract: The disclosure relates to a lighting unit for an aircraft interior having a floor with a baseplate fastenable to structure of the aircraft, and having a receiving region that faces away from the structure in a fastened state. An OLED light source having one or more OLEDs is arranged in the receiving region. The lighting unit also has a lens arranged on a side of the OLED light source facing away from the baseplate, and a frame mechanically retained in the receiving region by plug contacts such that the OLED light source and the lens are fastened in the receiving region. The plug contacts include electrical and mechanical contacts, wherein the OLEDs are supplied with electricity by at least one controllable driver, and wherein the contacts supply electricity to the OLED light source.

Abstract: The invention relates to a method for monitoring an electromagnetic actuator having at least one electromagnet. This electromagnet acts on an armature, which is displaceable against the force of at least one pull-back spring, and is used for operating an actuator, in particular an electromagnetic actuator for operating a gas exchange valve on the cylinder of an internal combustion engine. In accordance with this method, the electric power of the magnet is controlled via an electric control system. The other electric power parameter, which depends on the controlled electric power parameter, serves as a monitoring parameter, and its curve in time is determined as an actual value, which is then compared with a theoretical value. This theoretical value is the curve in time preset in the control system to ensure correct functioning. In the case of a discrepancy between these two values, an adjustment signal is produced.

Abstract: A method for controlling an electromagnetic actuator for a cylinder valve in a piston-type internal combustion engine with the actuator being operatively connected to the cylinder valve and moveable back and forth between two electromagnetics, counter to the force of at least one restoring spring. The current supplied to the electromagnetics is controlled with the aid of a sensor arrangement and via an engine control unit such that the current supply to the catching electromagnet, i.e., the electromagnet being approached by the moveable armature of the actuator, is controlled so as to move the armature slowly toward the respective pole face. Moreover, in order to regulate the valve play during the closing movement of a cylinder valve, the current supply to the catching electromagnet is controlled such that the valve initially touches down softly on its seat and that following the valve play, the armature touches down softly on the pole face.

Abstract: The invention relates to a method for determining the position and/or the speed of motion of a control element which can be moved back and forth between a first and second switching position. According to said method, an immersion body which is connected to the control element is guided through at least one stationary plunger coil, synchronously with the motion of said control element. The voltage that is generated as a result of the immersion body moving in relation to a permanent magnet and/or a permanent magnet moving in relation to the plunger coil is detected as a signal for the speed of motion of the control clement. The changes in impedance and or a current that are caused as a result of the movement of the immersion body in the plunger coil are detected as a signal for the position of the control element.

Abstract: The invention relates to a method for automatically generating smoothed characteristic diagrams for electronic engine controls of internal combustion piston engines. The invention is characterized in that the adjustment variable combination of the individual successive operating points are input by means of a motor control to a reference internal combustion piston engine by entering specified values of the boundary conditions for the operation of an internal combustion piston engine. According to the invention, the reference internal combustion piston engine is operated in this operating point, and the actual values and/or boundary conditions occurring during the same are acquired and compared with the specified values of the boundary conditions in an optimization system assigned to the engine control and, in the instance of variations, the adjustment variable combinations are optimally altered in a progressive manner by the optimization system.

Abstract: A rail-mounted transport device for ultra-heavy loads, in particular for changing steel mill converters includes a vehicle which accepts the load independently and is guided on tracks to a delivery station via a turning station where the transport direction is changed, in particular by 90°. The vehicle frame has an annular component for accepting the load, at least three turning wheels provided at the periphery of the annular component, and transport wheels arranged on the vehicle frame, wherein the transport wheels and/or the turning wheels are adjustable in height by means of adjusting elements. The adjusting elements are connected to actuators which can be brought into a position above the vehicle frame in which the transport wheels are raised from the rails during turning. Motors drive the turning wheels to rotate the vehicle frame from the previous transport direction into the desired transport direction.

Abstract: Disclosed is a metallurgical vessel, in particular a converter for treating liquid molten metals, in particular steel, formed of a refractory lining and a supporting metal shell that surrounds the refractory lining. The vessel is composed of welded together shell rings and dished parts of creep-resistant steel with plate thicknesses of up to 100 mm. The creep-resistant steel used is a highly resistant, water-quenched and then tempered close-grained structural steel with the following composition in wt.-% C 0.14-0.22 Cr 0.4-1.0 Mo 0.3-0.8 Ni 1.5-3.0 V 0.05-0.12 Mn 0.7-1.3 Pmax 0.015 Smax 0.003 Al 0.015-0.065 Si 0.20-0.60 Cumax 0.15 Nmax 0.012 Camax 0.004 the remainder being iron and impurities due to the production process.

Abstract: A method of detecting combustion misfires in an internal-combustion engine, includes the following steps: variably actuating valve drives of the engine by an electronic engine control; performing a load-dependent control with the control system by a cylinder-control program; the load-dependent control includes the step of reducing power in at least one cylinder by separately affecting ignition and fuel supply thereto; detecting, in the control system by the cylinder-control program, the cylinder of reduced power with a cylinder-identification signal; at predeterminable intervals detecting, from signals obtained in the preceding step, resulting deviations of predetermined operating data as normal operation; detecting, as combustion misfires, deviations of the predetermined operating data from the normal operation obtained in the preceding step; and generating a setting signal upon detecting deviations in the preceding step.

Abstract: A method for starting up an electromagnetic actuator operating an engine cylinder valve. The actuator has two spaced electromagnets, between which an armature, connected to the cylinder valve, is reciprocated against a restoring spring from a center position to lie against a magnet pole face. An ECU alternatingly supplies the electromagnets with a capturing current, the level of which is regulated as a function of the approach of the armature toward a pole face, as detected by a sensor assembly. A reference temperature is detected for the magnets, and, at a normal temperature, the armature starts oscillating due to the alternating energization of the electromagnets, and is brought into contact with a pole face. Or, at a low temperature level, one of the electromagnets is supplied with a high current pulse.

Abstract: The steelworks converter on the vessel cone of which a cone cooling system is provided, having sinuously arranged lines for channeling the cooling medium, which open into at least one channel-like collector in the top and bottom regions of the converter head. At least one cooling medium supply and discharge is provided for the cooling medium. Collecting pipe is provided in the region of the bottom collector, that the collecting pipe is spaced away from at least one of the side walls of the bottom collector. The collecting pipe has at least one closable drain and is in communication with the bottom collector in such a way that the cooling medium in the collector can be channeled into the interior of the collecting pipe.

Abstract: A method for starting up an electromagnetic actuator operating an engine cylinder valve. The actuator has two spaced electromagnets, between which an armature, connected to the cylinder valve, is reciprocated against a restoring spring from a center position to lie against a magnet pole face. An ECU alternatingly supplies the electromagnets with a capturing current, the level of which is regulated as a function of the approach of the armature toward a pole face, as detected by a sensor assembly. A reference temperature is detected for the magnets, and, at a normal temperature, the armature starts oscillating due to the alternating energization of the electromagnets, and is brought into contact with a pole face. Or, at a low temperature level, one of the electromagnets is supplied with a high current pulse.

Abstract: A method of operating an externally-ignited internal-combustion engine which includes a plurality of engine cylinders each provided with cylinder valves, an ignition device, a fuel injection device and an electromagnetic valve drive for operating the cylinder valves, and which further includes an electronic engine control for controlling the cylinder valves, includes the following steps: monitoring the operation of the ignition device and/or the fuel injection device of each cylinder; and, during cold start and/or when a spark failure and/or an ignition failure is detected in one of the cylinders during the monitoring step, adapting the control of the electromagnetic valve drives of that cylinder to the changed operational conditions.

Abstract: A method of regulating the idling run of an internal-combustion engine having a crankshaft, a plurality of cylinders each provided with intake and exhaust valves, a piston received for reciprocation in each cylinder and an engine control for variably controlling the intake and exhaust valves. The method includes the following steps during the idling run: determining the opening moment of the intake valves as a function of the angular position of the crankshaft and determining the closing moment of the intake valves by the engine control as a function of time.

Abstract: A method and an apparatus for operating a cylinder valve of an internal-combustion engine with an electromagnetic actuator for moving the cylinder valve into opposite open and closed valve end positions. The electromagnetic actuator has two spaced electromagnets provided with pole faces and being energizable with a controllable current flow, an armature operatively connected to the cylinder valve and arranged between the two electromagnets for a reciprocating motion therebetween into opposite armature end positions at the electromagnets in response to electromagnetic fields generated by the electromagnets for moving the cylinder valve into end positions thereof and return springs coupled to the armature and opposing, by a spring force, the displacements of the armature in response to the electromagnetic fields.

Abstract: A method of increasing a cast-off speed of an armature from a pole of an electromagnet of an electromagnetic actuator, includes the following steps: holding the armature at the pole against a force of a resetting device by maintaining an electric holding current flow through a coil of the electromagnet; and launching the armature from the pole by switching off the holding current; and at a predetermined moment during a release period of the armature from the pole, passing a cast-off current for a predetermined period through the coil. The cast-off current has a polarity opposite to the polarity of the holding current.

Abstract: An aqueous binder composition having a reduced tendency to yellow containingA) 20 to 95 wt-% of a water-dilutable organic polyol component that is present in the form of an aqueous solution or dispersion, contains one or more polymer-modified polyester resins which contain carboxylate groups and hydroxyl groups and has been prepared by the polymerization of olefinically unsaturated monomers in the presence of an unsaturated polyester resin that is copolymerized with the monomers andB) 5 to 80 wt-% of at least one heat-activatable cross-linking resin,wherein the percentages are based on the solids contents of components A) and B) and add up to 100%; and their use in heat-curable coating compositions.