Abstract: To simplify the optical calibration of an optical observation apparatus, a stand for an optical observation unit including a calibration object arranged directly on the stand in a fixed location is specified. Moreover, an optical observation apparatus, which includes such a stand and an optical observation unit connected to the stand, a method for calibrating such an optical observation apparatus, and a computer program are specified.

Abstract: In order to provide an electrochemical cell (100) that can be produced as simply as possible and has as long a service life as possible, according to the invention an electrochemical cell (100), in particular a cylindrical cell, is provided, which comprises: an electrochemical element (104), a housing (106), a first cell terminal (118) and a second cell terminal (120); wherein the electrochemical cell (100) also comprises a cast element, in particular a first cast element (128), for connecting the housing (106) and the first cell terminal (118) and/or a cast element, in particular a second cast element (154), for connecting the housing (106) and the second cell terminal (120).

Abstract: The present invention generally relates to pH-dependent mutant interleukin-2 polypeptides that exhibit reduced IL-2 receptor binding at neutral pH and retained IL-2 receptor binding at reduced pH. In addition, the invention relates to immunoconjugates comprising said pH-dependent mutant IL-2 polypeptides, polynucleotide molecules encoding the pH-dependent mutant IL-2 polypeptides or immunoconjugates, and vectors and host cells comprising such polynucleotide molecules. The invention further relates to methods for producing the pH-dependent mutant IL-2 polypeptides or immunoconjugates, pharmaceutical compositions comprising the same, and uses thereof.

Abstract: A fastening device (100), for fastening to a plate-like element, has a head (110) and a foot (120). The foot (120) has: a core (121) extending from the head (110) along an axis of rotation; and at least one group of blades (122) which are elastic at least in regions and extend outwards from the core (121). Each of the blades (122) has an oblique shoulder (123) or a shoulder with a finely stepped gradation, formed on the outer edge of the corresponding blade (122), said outer edge being arranged towards the head (110). The oblique shoulder (123) or the individual steps of the gradation of the shoulder is inclined with a slope with respect to a plane which has the axis of rotation of the core as a perpendicular. The shoulders (123) of the blades are arranged at different heights from one another along the axis of rotation.

Abstract: A sealing ring for a turbomachine, in particular a compressor or turbine stage of a gas turbine is provided, the sealing ring having an, in particular at least partially honeycomb-like and/or integral, seal, in particular an abradable coating (13); a profile cross section of the sealing ring, which is in particular at least partially manufactured by a generative manufacturing process, varying in the circumferential direction, in particular at least in some regions continuously and/or non-continuously at one or more circumferential positions, in particular separation points.

Abstract: The invention relates to a resuscitation dummy for the practical training of resuscitation measures, comprising a dummy body, which models the human torso and in which a first fluid line system is arranged, which models the human blood circulation system in schematised form and comprises arterial and venous fluid line segments that can be associated with the human abdomen and groin area, which fluid line segments are fluidically connected to a pump.

Abstract: Various embodiments include a system for carbon dioxide electrolysis comprising: an anode and a cathode both connected to a voltage supply, wherein the cathode comprises a gas diffusion electrode adjoined by a gas space and a cathode space; an electrolyte circuit; a gas supply delivering carbon dioxide to the gas space; wherein the gas space has an outlet for an electrolyte, carbon dioxide, and product gases produced by electrolysis; a return connection connecting the outlet to the gas supply; and a pump for circulation of carbon dioxide and product gas in the gas space and the return connection.

Abstract: An arrangement for the electrolysis of carbon dioxide, includes: an electrolytic cell having an anode and a cathode, wherein the anode and cathode are connected to a voltage supply, wherein the cathode is configured as a gas diffusion electrode to which a gas compartment is attached on a first side and a cathode compartment is attached on a second side; an electrolyte circuit connecting to the electrolytic cell; and a gas supply for supplying carbon dioxide-containing gas into the gas compartment, wherein one or more channels are arranged in the gas compartment, wherein the channels are at least partially in contact with the gas diffusion electrode and are configured for transporting electrolyte fluid passing through the gas diffusion electrode to a lateral region of the gas compartment.

Abstract: The application describes a method for calibrating metal oxide gas sensors using impedance spectroscopy, comprising the steps of: determining the impedance spectrum of the metal oxide gas sensor in a gas mixture in the absence of an analyte in order to determine a base line, and determining the impedance spectrum of the metal oxide gas sensor in the gas mixture in the presence of the analyte in at least a known concentration. The use of this method and an apparatus which can be used to carry out this method are also described.

Abstract: The invention relates to a fastening clip for fastening a component on a carrier component, comprising a latching element for insertion into a fastening opening of the carrier component and having latching means for latching to the fastening opening, further comprising an arresting element which, in the case of the latching element being inserted into the fastening opening of the carrier component, is insertable into an arresting opening of the latching element, wherein mechanical blocking means, which are adjustable between a blocking position, in which full insertion of the arresting element into the arresting opening is prevented, and an unblocking position, in which full insertion of the arresting element into the arresting opening is enabled, are provided, the mechanical blocking means, in the case of the latching element not being inserted into the fastening opening of the carrier component, being situated in their blocking position and, by way of insertion of the latching element into the fastening ope

Abstract: Various embodiments include a system for carbon dioxide electrolysis comprising: an anode and a cathode both connected to a voltage supply, wherein the cathode comprises a gas diffusion electrode adjoined by a gas space and a cathode space; an electrolyte circuit; a gas supply delivering carbon dioxide to the gas space; wherein the gas space has an outlet for an electrolyte, carbon dioxide, and product gases produced by electrolysis; a return connection connecting the outlet to the gas supply; and a pump for circulation of carbon dioxide and product gas in the gas space and the return connection.

Abstract: Various embodiments may include a system for carbon dioxide electrolysis comprising: an anode; a cathode including a gas diffusion electrode adjoined by a gas space and a cathode space; an electrolyte circuit; a gas supply delivering carbon dioxide-containing gas to the gas space, wherein the gas space includes an outlet for an electrolyte, carbon dioxide, and product gases resulting from the electrolysis; and a throttle connecting the outlet to the electrolyte circuit, wherein the throttle creates a predefined pressure differential between the gas space and the cathode space when a mixture of product gases and liquid electrolyte flows through the throttle.

Abstract: A sealing ring for a turbomachine, in particular a compressor or turbine stage of a gas turbine is provided, the sealing ring having an, in particular at least partially honeycomb-like and/or integral, seal, in particular an abradable coating (13); a profile cross section of the sealing ring, which is in particular at least partially manufactured by a generative manufacturing process, varying in the circumferential direction, in particular at least in some regions uniformly and/or non-uniformly at one or more circumferential positions, in particular separation points.

Abstract: The invention relates to a mixing device and a turbofan engine having such a mixing device 30 for mixing a first gas flow 40 with a second gas flow 50 in a turbofan engine 20, having an actuating device 95 and walls 60, which bound a channel 65 for the first gas flow 40 and a channel 70 lying radially outside for the second gas flow 50, the actuating device 95 comprising a coupling element 110 that is coupled to the walls (60), the actuating device 95 being designed to pivot the walls 60 between a first position and a second position disposed radially outside relative to the first position, the actuating device 95 comprising an adjusting ring 105 that can be rotated between a first rotating position and a second rotating position in the peripheral direction and that is joined to the coupling element 110.

Abstract: A thrust deflecting device for deflecting a thrust stream is disclosed, which includes a flap system having a plurality of deflecting flaps, each of which is pivotable around its yaw axis, the flap system being situated between parallel control surfaces such as baffle plates which, together with the flap system, form a box structure, which is pivotable around a pivot axis running in the direction of the transverse axis for the purpose of deflecting the thrust stream in the pitch direction, an aircraft engine also being disclosed.

Abstract: The invention relates to a fastening clip for fastening a component on a carrier component, comprising a latching element for insertion into a fastening opening of the carrier component and having latching means for latching to the fastening opening, further comprising an arresting element which, in the case of the latching element being inserted into the fastening opening of the carrier component, is insertable into an arresting opening of the latching element, wherein mechanical blocking means, which are adjustable between a blocking position, in which full insertion of the arresting element into the arresting opening is prevented, and an unblocking position, in which full insertion of the arresting element into the arresting opening is enabled, are provided, the mechanical blocking means, in the case of the latching element not being inserted into the fastening opening of the carrier component, being situated in their blocking position and, by way of insertion of the latching element into the fastening ope

Abstract: A thrust deflecting device for deflecting a thrust stream is disclosed, which includes a flap system having a plurality of deflecting flaps, each of which is pivotable around its yaw axis, the flap system being situated between parallel control surfaces such as baffle plates which, together with the flap system, form a box structure, which is pivotable around a pivot axis running in the direction of the transverse axis for the purpose of deflecting the thrust stream in the pitch direction, an aircraft engine also being disclosed.

Abstract: The invention relates to a mixing device and a turbofan engine having such a mixing device 30 for mixing a first gas flow 40 with a second gas flow 50 in a turbofan engine 20, having an actuating device 95 and walls 60, which bound a channel 65 for the first gas flow 40 and a channel 70 lying radially outside for the second gas flow 50, the actuating device 95 comprising a coupling element 110 that is coupled to the walls (60), the actuating device 95 being designed to pivot the walls 60 between a first position and a second position disposed radially outside relative to the first position, the actuating device 95 comprising an adjusting ring 105 that can be rotated between a first rotating position and a second rotating position in the peripheral direction and that is joined to the coupling element 110.

Abstract: A device for fastening a component on a carrier component, wherein the component comprises a through opening and the carrier component comprises a fastening projection being guidable through the through opening, including a first fastening element and a second fastening element, wherein first and second fastening elements can be preliminarily connected together and in the state preliminarily connected together form a reception, with which they can be placed on the fastening projection when the fastening projection of the carrier component is guided through the opening of the component, and wherein at least one of the fastening elements comprises at least one contacting surface, wherein the reception for the fastening projection reduces when a pressure is exerted on the at least one contacting surface when the fastening elements being preliminarily connected together are placed on the fastening projection.