Abstract: The invention relates to a process for the preparation of a plant extract from Curcuma plants, characterized by the process steps process step A) liquid extraction of Curcuma rhizomes, process step B) optionally, separation of a curcuminoid-containing solid obtained by precipitation from the extraction mixture obtained in process step A), process step C) removal of solvents present from the extraction mixture obtained in process step A) or B) to obtain a concentrate and process step D) distillation of the concentrate at a pressure of less than 1 bar to give the extract as distillate.

Abstract: A machine tool comprising at least one machining unit having at least one work spindle for accommodating tools in order to machine workpieces in a working area is provided with a first and a second transport device, by which workpieces are transported between the working area and a loading/unloading station. A second machining unit is arranged laterally next to the first machining unit in such a way that, alternating with the first machining unit, it can reach the workpieces in the working area from the same direction.

Abstract: Device for sealing components which rotate at relatively high speeds, in particular construction machine axles, comprising a sliding ring seal which is formed from a sliding ring and a mating ring, in particular a running gear seal, wherein the sliding and mating rings have a sliding face which faces a rotating component, one of the rings is provided in the installed state on one side within a ring receptacle and on the other side in the region of the rotating component in a manner which is fixed in terms of rotation, and the other ring is arranged in a sealed form with respect to a surrounding stationary component.

Abstract: The present invention covers zwitterionic, non-surface-active compounds in the form of carboxymethylated, short-chain dialkylaminoalkylamides and use thereof as therapeutic agent.

Abstract: A machine tool is provided with at least one tool spindle which is travelling in a work space (11) and on which a tool receptacle for clamping tools is provided. The machine tool also contains a magazine for tools which can be introduced into the tool receptacle in the tool spindle, the magazine having a transport chain which can be moved back and forth in a transport direction and on which carriers are arranged for receiving tools. The carriers extend from the transport chain essentially transversely to the transport direction. At least one carrier has at least two storage spaces for tools.

Abstract: A utility grid is provided, the utility grid comprising a centralized control means, an intermittent renewable energy source for generating electrical power: at least one further power generation system; and at least one local controller for controlling the total power output of said intermittent renewable energy source and said as least one further power generation system, wherein the centralized control means is connected with the at least one local controller and adapted to request a desired total power output from the local controller.

Abstract: Dihydrocoumarin produced technologically from coumarin by biotransformation is claimed together with related production variants that are carried out with the aid of isolated enzymes and/or microorganisms. Pure coumarin as well as coumarin isolated from a plant extract or coumarin-containing plant extracts can be used as starting materials. Selected strains of Saccharomyces, Arthrobacter, Pseudomonas, Bacillus, Basidiomycetes and Fusarium can be directly used for the biotransformation or can provide the enzymes required for the biotransformation. Preferred enzymes are coumarate and coumarin reductases. A production variant is additionally claimed which starts with coumarin and which, via o-coumaric acid or via intermediary dihydrocoumarin, leads to the subsequent melilotic acid which is subsequently dehydrated to dihydrocoumarin.

Abstract: Compounds of the general formula and to the use thereof for controlling microorganisms are provided.

Abstract: A machine tool has a work space (17) in which a device (15) for accommodating workpieces (16) to be machined is arranged. The machine tool further has a work spindle (18) for machining the workpieces (16) and a slide (34) which carries the work spindle (18) and is traversable in a longitudinal direction relative to the device (15), a respective cover (25), variable in length in the longitudinal direction (x), for the work space (17) being provided on the slide (34) on each of its sides, said cover (25) being connected with its respective first end to the slide (34) and with its respective second end to a side wall (21, 22; 51) of the work space (17). Each cover (25) variable in length has a respective rear wall (26) and a respective top (27), whereby the top (27) is connected to the rear wall (26) in a detachable, push-in, manner. A further flexible cover (31) is arranged in front of the slide (34) to protect the work space (17) at the bottom.

Abstract: In the case of a machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holders in order to transfer the tool holders between their magazine position, which is spaced apart from the tool-holding fixture, and their working position in the tool-holding fixture, a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed is arranged in the working spindle, the clamping system additionally comprising a retaining apparatus for a tool holder situated in the tool-holding fixture. In the case of a method carried out on this machine tool, the clamping system carries out a retaining operation which temporally precedes the clamping operation in order to grasp the tool holder inserted into the tool-holding fixture before the clamping apparatus fixes the tool holder.

Abstract: A fuel system comprising a fuel tank having an opening. A cap is removably coupled to the fuel tank and operable for sealingly closing the opening to prevent ingress and egress of air through the opening. An overfill chamber is in communication with the fuel tank, and a hydrocarbon collection chamber is in communication with the overfill chamber. A valve is disposed between the hydrocarbon collection chamber and the overfill chamber. The valve includes a reference axis and is configured to permit fluid communication between the overfill chamber and the hydrocarbon collection chamber only when an angle between a vertical axis and the reference axis is less than about thirty-five degrees.

Abstract: A method for compensating thermal displacements is carried out on a machine tool having a worktable for mounting workpieces to be machined, and having a tool spindle which can be traversed relative to the worktable on at least one axis and into which it is possible to clamp tools with the aid of which a machining process is carried out on the workpieces. In this case a calculating rule is used to calculate from at least one temperature value currently measured at a measuring point on the machine tool at least one correction value for the at least one axis. The calculating rule is tuned in this case to the respective machining process.

Abstract: A carrier for tool holders of a machine tool has at least one movable jaw which can be pivoted about a pivot axis that runs transversely with respect to a longitudinal axis of said tool holders. Said movable jaw can be pivoted between an expanded position and a closed position in which it grasps in a form-fitting manner a tool holder which is inserted into said carrier.

Abstract: In the case of a machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holders in order to transfer the tool holders between their magazine position, which is spaced apart from the tool-holding fixture, and their working position in the tool-holding fixture, a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed is arranged in the working spindle, the clamping system additionally comprising a retaining apparatus for a tool holder situated in the tool-holding fixture. In the case of a method carried out on this machine tool, the clamping system carries out a retaining operation which temporally precedes the clamping operation in order to grasp the tool holder inserted into the tool-holding fixture before the clamping apparatus fixes the tool holder.

Abstract: A machine tool has at least one working spindle, in which a tool receptacle for tool holders is provided. Furthermore, there is a tool-changing arm with a gripper, for a tool holder in order to transfer this tool holder between its magazine position, which is spaced apart from the tool receptacle, and its working position, in which the tool holder can be clamped into the tool receptacle. Orientation means are provided between the gripper and the tool holder supported by it and secure the tool holder in a nonrotatable manner on the gripper at least during its transfer between the magazine position and the working position and release it after it has been clamped into the tool receptacle, with the result that the tool holder can be rotated in relation to the gripper.

Abstract: In a machine tool (10) with a machine base (11), a working area (14), in which workpieces (13) are machined, and a device (25), which receives chips (24) formed during machining of the workpieces (13) from the working area (14) and conveys them onward, at least one tunnel (31, 33) provided for receiving one end (39) of a chip conveyor (38) is provided in the machine base (11), which tunnel extends at least to below the device (25) and is there of upwardly open (28) design.

Abstract: A machine tool comprising at least one machining unit having at least one work spindle for accommodating tools in order to machine workpieces in a working area is provided with a first and a second transport device, by which workpieces are transported between the working area and a loading/unloading station. A second machining unit is arranged laterally next to the first machining unit in such a way that, alternating with the first machining unit, it can reach the workpieces in the working area from the same direction.

Abstract: A machine tool has a working spindle in which a tool receptacle for tool holders is provided. Furthermore, there is at least one tool-changing arm with a gripper in which a tool holder is held in a peripheral alignment with respect to the gripper in order to transfer this tool holder between its magazine position, which is spaced apart from the tool receptacle, and its working position, in which the tool holder can be clamped into the tool receptacle. A positioning indicator is provided for the peripheral alignment of the tool holder, the indicator indicating a misalignment between the tool holder and gripper.

Abstract: The invention relates to a molybdenum alloy that includes: 94 to 99 weight % of molybdenum; 0.5 to 6 weight % of niobium; and 0.01 to 1 weight % of zirconium. The invention also relates to metal substrates that include such a molybdenum alloy, and anode disks for rotating anode x-ray tubes that include the substrate. Also described are methods of preparing tubular-shaped and disk-shaped molybdenum alloy based sputtering targets.

Abstract: A machine tool center (10) displays at least one machine tool (11, 12, 13) which has a working area (17) accessible through an operator door (16) to process workpieces (21). Furthermore, a loading/unloading station (14) for the workpieces (21) and a loading device (22) which transports the workpieces (21) between the loading/unloading station (14) and the respective machine tool (11, 12, 13) and changes these at the machine tool (11, 12, 13) are also provided. In the new machine tool center (10) the loading device (22) is arranged below the working space (17) of the machine tool (11, 12, 13) (FIG. 1).