Abstract: A device for tangential flow filtration of a fluid includes a filter unit having has a first fluid opening and a second fluid opening for the fluid, a filter element and a permeate opening to discharge a permeate filtered out of the fluid, a first flow connection to connect the first fluid opening to a reservoir for the fluid, a second flow connection to connect the second fluid opening to the reservoir for the fluid, a first pump in the first flow connection, and configured to convey the fluid from the reservoir to the filter unit :a third flow connection configured to enable a fluid communication between the first flow connection and the second flow connection, the third flow connection bypassing the filter unit, and a second pump configured to circulate the fluid through the third flow connection and the filter unit.

Abstract: An underground permeability measuring apparatus includes an injection member formed as a lance to be introduced into the underground, having a cavity for guiding a fluid to at least one exit port, which preferably is arranged in the free end region of the injection member, through the injection member and the exit port into the underground surrounding the injection member is injectable. An injection member for introduction into an underground includes a cavity for guiding a fluid to at least one exit port, which preferably is arranged in the free end region of the injection member. The apparatus further includes a pressure-increasing device, through which the fluid is injectable by overpressure through the injection member and the exit port into the underground surrounding the injection member.

Abstract: A luminaire (10) for illuminating an area of a building, in particular an office, comprising lighting means (14) for providing light, a support means (12) on which the lighting means (14) can be mounted, a control unit (for controlling the lighting means (14) using control commands, a communication means (24) for communicating with the control unit (22), the communication means (24) having a data carrier (26), in which data that can be read out by the control (22) can be stored for the purpose of controlling the luminaire (10), a power source (30) or a power source connection for a power source, having the following additional features: a timing module (28), disposed in or on the luminaire (10), for autonomously supplying the current time and, if appropriate, the current date, and the data stored in the data carrier (26) can be read out in accordance with the time information supplied by the timing module (28) for the time-dependent control of the luminaire (10).

Abstract: The invention relates to an intelligent lighting device with multiple luminaires, which are at least partially coupled to each other with a wireless communication device. For this purpose, the luminaires preferably have communication modules with transmitter/receiver devices, via which the luminaires can communicate with each other. It is thereby provided that in accordance with the current operating mode of one of the luminaires at least one of the other luminaires can adopt a different predefined operating mode. Said luminaire can, for example upon the switching on of a luminaire or when one of the luminaires detects a person by means of a sensor device in the area of the luminaire, go into a working level with a predefined light intensity and the other luminaires located in the vicinity of said one luminaire go into a background illumination, i.e. in an illumination with a lower illumination level (background level).

Abstract: A gas turbine rotor for a gas turbine is provided. The gas turbine rotor includes a compressor rotor shaft, a turbine rotor shaft and a coupling device frictionally connecting the two rotor shafts, wherein the coupling device is designed in such a way that the friction connection also exists when the two rotor shafts are displaced relative to one another. In this case, the turbine rotor shaft is lengthened at the end facing the compressor rotor shaft in such a way that the turbine rotor shaft overlaps with the compressor rotor shaft in the axial direction and the coupling device connects this lengthened end of the turbine shaft to the compressor rotor shaft in the radial direction.

Abstract: An oil supply system for a stationary turbomachine is provided. A safe operation of the turbomachine is enabled even at ambient temperatures of up to 60° C. for a plurality of hours in a novel connection arrangement of the components of the oil supply system, such as the oil tank, pump a, and heat exchanger, as well as the pipeline system, without one of the components having to be designed for a further increased operating temperature. The oil tank has two regions stacked horizontally one above the other for storing the oil. The two regions are largely or completely separated from each other by a separating element.

Abstract: The invention relates to an intelligent lighting device with multiple luminaires, which are at least partially coupled to each other with a wireless communication device. For this purpose, the luminaires preferably have communication modules with transmitter/receiver devices, via which the luminaires can communicate with each other. It is thereby provided that in accordance with the current operating mode of one of the luminaires at least one of the other luminaires can adopt a different predefined operating mode. Said luminaire can, for example upon the switching on of a luminaire or when one of the luminaires detects a person by means of a sensor device in the area of the luminaire, go into a working level with a predefined light intensity and the other luminaires located in the vicinity of said one luminaire go into a background illumination, i.e. in an illumination with a lower illumination level (background level).

Abstract: An oil supply system for a stationary turbomachine is provided. A safe operation of the turbomachine is enabled even at ambient temperatures of up to 60° C. for a plurality of hours in a novel connection arrangement of the components of the oil supply system, such as the oil tank, pump a, and heat exchanger, as well as the pipeline system, without one of the components having to be designed for a further increased operating temperature. The oil tank has two regions stacked horizontally one above the other for storing the oil. The two regions are largely or completely separated from each other by a separating element.

Abstract: A gas turbine rotor for a gas turbine is provided. The gas turbine rotor includes a compressor rotor shaft, a turbine rotor shaft and a coupling device frictionally connecting the two rotor shafts, wherein the coupling device is designed in such a way that the friction connection also exists when the two rotor shafts are displaced relative to one another. In this case, the turbine rotor shaft is lengthened at the end facing the compressor rotor shaft in such a way that said turbine rotor shaft overlaps with the compressor rotor shaft in the axial direction and the coupling device connects this lengthened end of the turbine shaft to the compressor rotor shaft in the radial direction.

Abstract: The invention relates to immunoadsorbers for use in sepsis therapy, in particular for removal of complement factors and lipopolysaccharides (LPS) and, if need be, further sepsis mediators such as TNF and interleukins from body fluids, methods for their production and their use.

Abstract: In the method for the determination of the pressure (p) in and/or of the through-flow (Q) of a liquid through a pump having at least one magnetic bearing for the axial journaling of the pump rotor (1), axial forces act on the rotor (1) of the pump during operation. The axial forces which act on the rotor are utilised for the determination of the pressure (p) and/or of the through-flow (Q).

Abstract: A composite structural member is constructed to take up dynamic loads. A force transmitting element is glued to a force applying element and to a force take-up element to form the composite member. The force transmitting element is a molded blank of cellular polyurethane having an open cell structure throughout. The open cells also extend along the surfaces glued to the force applying element and to the force take-up element. The glue or adhesive used is a moisture curing polyurethane prepolymer capable of penetrating into said open cell structure, thereby greatly increasing the adhesive bond.

Abstract: A process and apparatus for the manufacture of fibers from fusible materials and particularly materials of low viscosity. The melt and gaseous flow medium is passed through a Laval-nozzle at a supersonic speed. The nozzle and speed are so selected as to cause an abrupt temperature drop in the flow medium within the nozzle which causes the melt to solidify into fibers.

Abstract: A structural part made of titanium and/or titanium alloy is given a surface treatment by sandblasting or chemical pickling and is provided with a protective film of a strong reducing agent such as a solution of a derivative of hydrazine or hydroxylamine which is applied directly over the titanium and immediately thereafter a slide layer of a nickel is applied over the reducing agent layer preferably by spraying. Complex derivatives of hydrazine and hydroxylamine in the form of salts may be applied during a pickling and descaling treatment. The adhesion of the wear-resistant layer of metal is improved by a refining at a temperature of about 300.degree. C to obtain an intermetallic bond between the titanium and nickel at the interfacial boundary.

Abstract: A process and apparatus for the manufacture of fibers from fusible materials and particularly materials of low viscosity. The melt and gaseous flow medium is passed through a Laval-nozzle at a supersonic speed. The nozzle and speed are so selected as to cause an abrupt temperature drop in the flow medium within the nozzle which causes the melt to solidify into fibers.