Abstract: A method for forming a semiconductor structure comprising a silicon-on-insulator layer structure with crystalline silicon oxide SiOx as the insulator material comprises: providing a crystalline silicon substrate having a substantially clean deposition surface in a vacuum chamber; heating the silicon substrate to an oxidation temperature To in the range of 550 to 1200 ° C.; supplying, while keeping the silicon substrate in the oxidation temperature, with an oxidation pressure Po in the range of 1·10?8 to 1·10?4 mbar in the vacuum chamber, molecular oxygen O2 into the vacuum chamber with an oxygen dose Do in the range of 0.1 to 1000 Langmuir; whereby a crystalline silicon oxide layer with a thickness of at least two molecular layers is formed within the silicon substrate, between a crystalline silicon base layer and a crystalline silicon top layer. Related semiconductor structures are described.

Abstract: A mixing arrangement for mixing two solutions, a mixer settler unit and a use. The mixing arrangement includes a mixing device arranged in the mixing space for rotating therein, the mixing device comprising at least two helical bars supported around a shaft and rising upwards from the bottom section of the mixing space. The helical bars are fixed to the shaft with support spokes. The ratio of the diameter (D) of the mixing device to the average diameter (T) of the mixing space, that is D/T, is 0.47 at most.

Abstract: A signaling device for increasing visibility of a mobile robot. The signaling device comprises (a) a base section, attached with a rotational joint to a side of the mobile robot, said rotational joint allowing the device to rotate clockwise and/or anticlockwise relative to the mobile robot, the rotational joint constructed and adapted to return the device to an equilibrium position; and (b) a body section comprising a mast, the body section flexibly attached to the base section at a lower extreme of the body section.

Abstract: A signaling device for increasing visibility of a mobile robot. The signaling device comprises a signaling section, a body section, and a base section. The invention also discloses a system for increasing visibility of a mobile robot. The system comprises a mobile robot, a signaling device attached to the mobile robot and a remote terminal configured to at least one of monitoring and controlling at least one of the mobile robot and the signaling device.

Abstract: A signaling device for increasing visibility of a mobile robot. The signaling device comprises a signaling section, a body section, and a base section. The invention also discloses a system for increasing visibility of a mobile robot. The system comprises a mobile robot, a signaling device attached to the mobile robot and a remote terminal configured to at least one of monitoring and controlling at least one of the mobile robot and the signaling device.

Abstract: A method for establishing a TCP connection between two client terminals protected by stateful firewalls and comprising means for sending messages to each other via a messaging server. The client terminals agree on establishing a mutual TCP connection by sending a message, which indicates port numbers to be used on said connection. A TCP connection establishment procedure is started in both client terminals. After sending a first handshake message, a message indicating a sequence number of the first handshake message is sent from both client terminals to each other. When the firewalls of the opposite client terminals reject the first handshake message, an acknowledgement message to the first handshake message is created in both client terminals using a raw socket, which acknowledgement message includes the received sequence number as an acknowledgement number. Finally, the raw socket based acknowledgement message is sent to the opposite client terminal for completing the establishment of the TCP connection.

Abstract: In order to reduce the size of a signaling message advertising prefixes, a super block prefix is determined amongst two or more prefixes having a common pattern. Information on the super block prefix and delta information on each non-super-block prefix is used in the messages instead of the prefixes as such, the delta information indicating how the prefix differs from the super block prefix.