Abstract: The present invention relates to protein purification, primarily in the chromatographic field. More closely, the invention relates to affinity chromatography using a split intein system with an improved C-intein tag and N-intein ligand, wherein the target protein may be purified as a tag-less end product with a native N-terminus.

Abstract: A laser marking system (200) comprising first and second laser marking heads (201, 202) configured to mark a product (221, 222). The laser marking system comprises a first controller (231) associated with the first laser marking head (201) and a second controller (232) associated with the second laser marking head (202). The first and second controllers (231, 232) are configurable to receive data (205) indicating information to be marked on the product (221, 222), generate laser marking vectors based upon the received data, and control their associated laser marking head (201, 202) based on the laser marking vectors.

Abstract: A device for inspecting a printed image of a product of a printing press, comprising an image detecting device that furnishes actual image data of the product, and a comparison circuit comparing the actual image data with master image data from a defect-free master image, dividing means for performing a preselectable division of the printed image into inspection areas, and wherein if a defect is detected by the comparison circuit the associated inspection area is designated as being defective.

Abstract: The invention relates to a method and to an arrangement for the synchronization of the image recording of monochrome recordings and color recordings with photosensitive line sensors. A line-scanning pattern is generated by a programmable counter arrangement, wherein the timer measures the phase position of the line-scanning pattern, generated by the counter arrangement, with the aid of the computer and the programmable counter arrangement at the point in time of the impinging of a pulse of the incremental transmitter, wherein the timer compares these with a coordinated calculated or tabulated reference value, and wherein the timer employs the thus obtained phase difference in order to influence a counter, preconnected to the line counter CT2, in its count volume (FIGS. 1 and 2).

Abstract: A method of automatically making frames from elongate workpieces, more particularly plastics, characterized in that the workpieces are heated individually at predetermined places to be subsequently bent and at the ends. Each workpiece is conveyed transversely of its longituidinal extension along a path which is formed by longitudinal guides with predetermined edge curvatures and along which spatially curved guide-like stops are provided, so that the particular workpiece is forced to bend itself around the edge curvature. This operation is repeated at least in accordance with half the number of the places of the workpiece to be bent, whereafter the two ends of the workpiece have approached one another and the ends of the workpiece are melted and pressed against one another.