Abstract: A piston ring is produced from a main body made of steel or cast steel and comprising a running face, an inner circumferential surface, upper and lower flank regions, and transition regions from the running face to the respective flank region, by coating the running face and the transition regions with a first chromium layer, removing this first chromium layer at the running face down to the base material of the main body, providing at least the running face of the layer-free main body with a nitride layer, and, finally, coating the running face and the transition regions with at least one further chromium layer.

Abstract: A piston ring is produced from a main body made of steel or cast steel and comprising a running face, an inner circumferential surface, upper and lower flank regions, and transition regions from the running face to the respective flank region, by coating the running face and the transition regions with a first chromium layer, removing this first chromium layer at the running face down to the base material of the main body, providing at least the running face of the layer-free main body with a nitride layer, and, finally, coating the running face and the transition regions with at least one further chromium layer.

Abstract: A compression piston ring 2 having a running-surface region 4, an upper flank 6, a lower flank 8 and also an inner circumferential surface 10, wherein the running-surface region 4 is provided with a profiled section, which, as viewed over the axial height of the running-surface region 4, comprises mutually spaced, convexly spherically constructed sections 12, 14 having an upper and lower apex So; Su, wherein a groove 16 with a depth Tn is arranged between the apexes So, Su, wherein both apexes So; Su are arranged below a centre M of the piston ring 2 in the axial direction.

Abstract: The present invention relates to a method for producing a substituted alkyl cycloalkanone, comprising the alkylation of a cycloalkanone with an alkene derivative in the presence of a metal oxide, where n is 2 to 20, m is 0 to 10, and R is a functional group.

Abstract: A transport method for temperature-controlled products, a transport container, a conditioning device or filling device, and a control software are proposed. In a method for transporting temperature-controlled products, a transport container containing a product having a product weight is supplied with a preconditioned thermal mass before the start of transport, the quantity of the thermal mass supplied being computationally calculated in advance on the basis of thermodynamically and/or logistically relevant data such as product weight and/or the starting location and destination and/or the estimated transport time and/or weather data at the starting location and/or at the destination and/or between the starting location and destination and/or a temperature range to be maintained.

Abstract: The invention relates to a process for producing 17-oxabicyclo[14.1.0]heptadec-8-ene comprising a reaction with the reactants cyclohexadeca-1,9-diene and hydrogen peroxide.

Abstract: According to a first aspect of the present disclosure, a apparatus is provided, the apparatus comprising a reader and a controller operatively coupled to the reader, wherein the reader is configured to receive certificate data from an external tag and to provide said certificate data to the controller, and wherein the controller is configured to receive said certificate data from the reader, to verify whether the certificate data are valid, and to enable operation of the apparatus if the certificate data are valid. According to a second aspect of the present disclosure, a corresponding method for controlling the operation of an apparatus is conceived. According to a third aspect of the present disclosure, a corresponding computer program product is provided.

Abstract: The invention relates to a sliding element, in particular a piston ring, having a carbon-based coating and at least in sections, a surface roughness (R?q) according to DIN EN ISO 4287 of 0.05, preferably 0.08, to 0.11, preferably to 0.1 ?m.

Abstract: A compression piston ring 2 having a running-surface region 4, an upper flank 6, a lower flank 8 and also an inner circumferential surface 10, wherein the running-surface region 4 is provided with a profiled section, which, as viewed over the axial height of the running-surface region 4, comprises mutually spaced, convexly spherically constructed sections 12, 14 having an upper and lower apex So; Su, wherein a groove 16 with a depth Tn is arranged between the apexes So, Su, wherein both apexes So; Su are arranged, below a centre M of the piston ring 2 in the axial direction.

Abstract: The invention relates to a process for producing 17-oxabicyclo[14.1.0]heptadec-8-ene comprising a reaction with the reactants cyclohexadeca-1,9-diene and hydrogen peroxide.

Abstract: The present invention relates to a method for producing a substituted alkyl cycloalkanone of formula (I), having the alkylation of a cycloalkanone of formula (II) with an alkene derivative of formula (III) in the presence of a metal oxide, where n is 2 to 20, m is 0 to 10, and R is a functional group.

Abstract: According to a first aspect of the present disclosure, a apparatus is provided, the apparatus comprising a reader and a controller operatively coupled to the reader, wherein the reader is configured to receive certificate data from an external tag and to provide said certificate data to the controller, and wherein the controller is configured to receive said certificate data from the reader, to verify whether the certificate data are valid, and to enable operation of the apparatus if the certificate data are valid. According to a second aspect of the present disclosure, a corresponding method for controlling the operation of an apparatus is conceived. According to a third aspect of the present disclosure, a corresponding computer program product is provided.

Abstract: The invention relates to a sliding element, in particular a piston ring, having a carbon-based coating and at least in sections, a surface roughness (R?q) according to DIN EN ISO 4287 of 0.05, preferably 0.08, to 0.11, preferably to 0.1 ?m.

Abstract: An oil scraper piston ring includes a ring body having two radial outer running webs on the ring body, which are arranged one behind the other in relation to the run direction of the piston and are spaced apart from one another by an external depression. Each running web respectively has two scraper lips and a wear protection coating is provided on each scraper lip.

Abstract: An oil scraper piston ring includes a ring body having two radial outer running webs on the ring body, which are arranged one behind the other in relation to the run direction of the piston and are spaced apart from one another by an external depression. Each running web respectively has two scraper lips and a wear protection coating is provided on each scraper lip.

Abstract: Approaches for gathering packet processing information. A directed graph is used to represent the packet processing system. In response to each network packet input to the system, an associated, unique packet identifier is established for the network packet. Each input network packet is processed by one or more components of the system. For each input network packet, respective log data is stored by each of one or more components of the system that processed the input network packet. The log data includes data from the input network packet, and the associated identifier. Components of the device that processed a packet having a selected, associated packet identifier are determined by traversing the graph and searching for graph-connected nodes for which the represented components stored log data with the selected packet identifier. Data is output indicating the components that processed the packet having the selected packet identifier.

Abstract: A culture insert carrier for supporting at least one culture insert in a culture tray having at least one well, wherein the culture insert carrier comprises a plane member with at least one opening for insertion of the at least one culture insert in such a way that the culture insert carrier supports the at least one culture insert in a position in the culture tray is provided. Further, a culture insert comprising a plurality of suspension elements including a first set of suspension elements and a second set of suspension elements, the suspension elements being adapted to suspend the culture insert in a plurality of vertical positions, including a first vertical position and a second vertical position, in relation to a frame is provided.

Abstract: The present invention relates to a culture insert carrier, a culture insert and a culture system for culturing and testing of different kinds of cells, such as for example skin models. A culture insert carrier for supporting at least one culture insert in a culture tray having at least one well, wherein the culture insert carrier comprises a plane member with at least one opening for insertion of the at least one culture insert in such a way that the culture insert carrier supports the at least one culture insert in a position in the culture tray is provided. Further, a culture insert comprising a plurality of suspension elements including a first set of suspension elements and a second set of suspension elements, the suspension elements being adapted to suspend the culture insert in a plurality of vertical positions, including a first vertical position and a second vertical position, in relation to a frame is provided.

Abstract: Approaches for validating a design for a packet processing circuit. A method inputs a high-level language specification of a first format of an input packet. From the input specification, a plurality of high-level input packets having the first format are generated, with each field of each input packet having a value consistent with the packet specification. The packet processing circuit is simulated using a first model with input of the high-level input packets, and a first plurality of high-level output packets are output. The high-level input packets are translated into low-level input packets. The packet processing circuit is simulated using a second model with input of the low-level input packets, and a plurality of low-level output packets are output and translated into a second plurality of high-level output packets. The first and second pluralities of high-level output packets are compared to corresponding expected output packets, and comparison results stored.

Abstract: A stack of communicating trays for cultivation of cells, whereby the tray stack is equipped with a gas exchanger having at least one processed aperture for fast and substantially uniform distribution of gas to the trays.