Abstract: Disclosed is a method for purifying sialylated oligosaccharides from a fermentation broth, cell-lysate or biocatalytic reaction mixture for obtaining high amounts of desired sialylated oligosaccharides in high purity. The method is particular suitable for the large-scale economic purification of sialylated human milk oligosaccharides (such as 3?-sialyllactose, 6?-sialyllactose or sialylated lacto-N-tetraose derivatives) from microbial fermentation, using recombinant bacterial cells or yeast cells. The obtained material is of high purity and can be used for food or medical application such like medical nutrition products, infant formula, dietary supplements, general nutrition products (e.g. dairy drinks).

Abstract: A screen provision system, for a printing device with a screen receptacle for a printing screen-and a squeegee device associated with the screen receptacle, has a conveying device for conveying a printing screen and at least one screen magazine with multiple screen storage portions that can each receive a printing screen. The screen provision system has at least one treatment station for treating the printing screens. The conveying device supplies printing screens to the screen magazine and to the at least one treatment station.

Abstract: A screen unit for a printing device for printing three-dimensionally shaped structures, in particular on substrates, printed circuit boards, wafers, solar cells, carrier substrates, printing tables, carrier plates, sintering plates or the like, has a frame holding at least one printing screen and is designed to be accommodated in a screen receptacle of the printing device, to be filled with a printing compound and to be subjected to the action of a squeegee for carrying out a printing process. The screen unit has, in or on the frame, at least one holding device for the squeegee, which is in the form of an exchangeable squeegee.

Abstract: Disclosed is a roll stabilizer (1) for a motor vehicle, comprising a sensor unit (10), which operates according to the principle of inverse magnetostriction, for acquiring torque (M) acting between stabilizer portions (6a, 6b), characterized in that the sensor unit (10) includes a magnetic field generation device, which preferably comprises a transmitter coil (12) and is used for magnetizing a measurement element (4; 6a) affected by torsional stress during operation, and a plurality of magnetic field detection devices, each of which preferably comprises a receiver coil (13) and which are used for acquiring parameters of the magnetic field of the measurement element (4; 6a). Also disclosed is a corresponding sensor unit (10) for a roll stabilizer (1) of the aforementioned type.

Abstract: A printing system for printing three-dimensionally shaped structures, in particular on substrates such as circuit boards, wafers, solar cells, carrier substrates, printing tables, carrier plates, sintering plates or the like, has at least one printing device with a printhead having a squeegee device and a screen receptacle associated with the squeegee device for receiving a printing screen. A screen provision device has at least one screen magazine for storing multiple printing screens and a conveying device for conveying a printing screen from the screen magazine to the screen receptacle and from the screen receptacle to the screen magazine.

Abstract: A screen provision system, for a printing device with a screen receptacle for a printing screen-and a squeegee device associated with the screen receptacle, has a conveying device for conveying a printing screen and at least one screen magazine with multiple screen storage portions that can each receive a printing screen. The screen provision system has at least one treatment station for treating the printing screens. The conveying device supplies printing screens to the screen magazine and to the at least one treatment station.

Abstract: A screen unit for a printing device for printing three-dimensionally shaped structures, in particular on substrates, printed circuit boards, wafers, solar cells, carrier substrates, printing tables, carrier plates, sintering plates or the like, has a frame holding at least one printing screen and is designed to be accommodated in a screen receptacle of the printing device, to be filled with a printing compound and to be subjected to the action of a squeegee for carrying out a printing process. The screen unit has, in or on the frame, at least one holding device for the squeegee, which is in the form of an exchangeable squeegee.

Abstract: A front derailleur device for a bicycle chain shift includes a frame fixing part for attachment to a bicycle frame, a hinge arrangement which is pivotable relative to the frame fixing part, and a chain cage which is pivotable relative to the frame fixing part via the pivotable hinge arrangement for guiding and pivoting of the bicycle chain. The hinge arrangement includes at least two hinged struts which can be mounted rotatably relative to the frame fixing part and relative to the chain cage about pivot axes. The pivot axes run substantially parallel to each other and, in a mounted state of the derailleur device on a bicycle, may be oriented substantially vertically.

Abstract: A shifting assembly for shifting a roller chain between a plurality of front chain wheels for a bicycle that includes a smaller chain wheel, a larger chain wheel and a chain derailleur having a channel on an inner guide plate. The channel has an elevation that comes into contact with a chain rise rivet on the larger chain wheel in the state of starting to shift the roller chain from the smaller chain wheel to the adjacent larger chain wheel, viewed in a direction parallel to the axis of rotation of the chain wheels.

Abstract: A front derailleur device for a bicycle chain shift includes a frame fixing part for attachment to a bicycle frame, a hinge arrangement which is pivotable relative to the frame fixing part, and a chain cage which is pivotable relative to the frame fixing part via the pivotable hinge arrangement for guiding and pivoting of the bicycle chain. The hinge arrangement includes at least two hinged struts which can be mounted rotatably relative to the frame fixing part and relative to the chain cage about pivot axes. The pivot axes run substantially parallel to each other and, in a mounted state of the derailleur device on a bicycle, may be oriented substantially vertically.

Abstract: A shifting assembly for shifting a roller chain between a plurality of front chain wheels for a bicycle that includes a smaller chain wheel, a larger chain wheel and a chain derailleur having a channel on an inner guide plate. The channel has an elevation that comes into contact with a chain rise rivet on the larger chain wheel in the state of starting to shift the roller chain from the smaller chain wheel to the adjacent larger chain wheel, viewed in a direction parallel to the axis of rotation of the chain wheels.

Abstract: The present invention relates to a printing stencil, for example, for applying a contacting (contact finger, busbar(s)) to a substrate of a solar cell and to a method for producing such a printing stencil. The printing stencil can include a carrier layer and a structure layer located below the carrier layer, the structure layer having at least one printed image opening which corresponds to at least a portion of the printed image of the contacting (contact finger, busbar(s)), the carrier layer having one or more carrier layer openings and the one or more carrier layer openings overlapping when the printing stencil is viewed from above, with respect to the printed image opening in such a manner that the printing stencil has an opening which is formed from the at least one printed image opening and the one or more carrier layer openings, and is suitable for applying contacting material to the substrate through the opening.

Abstract: A check valve for arranging between a first pressure chamber, in which a first pressure prevails, and a second pressure chamber in which a second pressure prevails. The valve comprises a valve housing on which a valve seat is formed, and comprises a blocking element which is designed in a blocking position, to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers. The valve seat is configured as an oblique surface, which relative to the flow direction is aligned at an angle which is greater than 15° and less than 80°. The blocking element comprises a planar blocking lobe made from an elastically deformable material which in the blocking position bears against the oblique surface, and in the open position lifts away from the oblique surface in order to release the connection.

Abstract: An energy supply is provided along a route with at least one distribution station, wherein a first voltage is applied at the input and a second voltage at the output. The second voltage is lower or higher than the first voltage. A plurality of components are arranged along the route. A component, which is supplied with the second voltage, includes a power supply unit for transforming the second voltage into a third voltage.

Abstract: A protective device enables reliably cutting a drive region off the power supply of a guided vehicle. The drive region is connectible to the power supply via at least one drive region switch and it comprises stator sections that are strung together. The sections are connectible to a drive region supply line by way of a stator section switch. The protective device has a control unit for opening at least one switch in the event of a malfunction. The object is to provide a protective device that is inexpensive and that allows a flexible allocation of the power supply to the drive regions. For this purpose, the control is adapted to open all stator section switches and the one or more drive regions switches in the event of a malfunction.

Abstract: A system includes a plurality of electrical switches. Every switch is associated with at least one monitoring device for detecting the respective switching condition of the switch. All of the monitoring devices are interconnected through a data connection through which the switching conditions of all of the switches are made known to every monitoring device.

Abstract: A device for controlling and monitoring an installation that is composed of sequentially disposed sub-sections in a chain so that each sub-section lies between a forward sub-section and a rearward sub-section, with the exception of the terminal sub-sections of the installation. Each sub-section is connected to a first control unit and a second control unit and the control units of the sub-sections communicate at least partially with one another, with the sub-sections, and/or with a higher-level control center. Increased safety requirements are satisfied with the novel device, while at the same time being cost-effective, in that the first control unit is also connected to the forward sub-section and the second control unit is also connected to the rearward sub-section.

Abstract: A device for driving a magnetic levitation train has at least one controllable power supply unit that feeds at least one multi-phase power supply line, and a long stator with stator windings that extend in switching sections of the long stator. Each switching section can be connected to at least one of the power supply lines via an assigned section feed switch and each stator winding has at least one assigned current sensor for detecting a current and at least one assigned evaluation unit connected to the sensor. In order to permit a simple, precise overcurrent protection, each current sensor is configured to detect the current in one phase of each assigned stator winding and the evaluation unit is configured to deactivate the section feed switch, if the current detected in each case exceeds a previously defined threshold value.

Abstract: A check valve for arranging between a first pressure chamber, in which a first pressure prevails, and a second pressure chamber in which a second pressure prevails. The valve comprises a valve housing on which a valve seat is formed, and comprises a blocking element which is designed in a blocking position, to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers. The valve seat is configured as an oblique surface, which relative to the flow direction is aligned at an angle which is greater than 15° and less than 80°. The blocking element comprises a planar blocking lobe made from an elastically deformable material which in the blocking position bears against the oblique surface, and in the open position lifts away from the oblique surface in order to release the connection.

Abstract: An energy supply is provided along a route with at least one distribution station, wherein a first voltage is applied at the input and a second voltage at the output. The second voltage is lower or higher than the first voltage. A plurality of components are arranged along the route. A component, which is supplied with the second voltage, includes a power supply unit for transforming the second voltage into a third voltage.