Abstract: A cell culture measuring system and to a method for comparative investigations on cell cultures. In a cell culture measuring system, cell cultures are cultivated on a cell culture carrier within a flow passage. An inflow and an outflow for a liquid culture medium and at least two sensors are present. At least one further inflow for a test liquid is arranged in the flow direction of the culture medium between the inflow for the culture medium and the outflow of the flow passage so that the test liquid flowing through the flow passage by displacement of the culture medium only flows around and/or over some of the cells present on the cell culture carrier. At least one sensor is arranged in the region of the cells not influenced by test liquid and at least one sensor is arranged in the region of cells influenced by test liquid.

Abstract: A surgical nail for treating a fractured bone includes a nail body extending along a longitudinal axis from a trailing end to a leading end and including a trailing end locking aperture extending transversely through a trailing end portion thereof and a leading end locking aperture extending transversely through a leading end portion thereof; a trailing end connecting element located at the trailing end of the nail body adapted and configured to be coupled to a trailing end aiming guide; and a leading end connecting element at the leading end of the nail body adapted and configured to be coupled to a leading end aiming guide.

Abstract: In a method and a device for testing for leakage in a fuel injection valve of an internal combustion engine, a temperature quantity is determined that characterizes the temperature of at least a part of the fuel injection valve. On the basis of this temperature quantity, the presence of a leak is inferred.

Abstract: The invention relates to a distribution valve with integrated flow metering unit, in particular for warm water heating systems, for use in a pipe, wherein a closable valve seat in the distribution valve and an axially movable sealing part thereto are provided, wherein one section of the sealing part is held and guided in an attachment element which is arranged externally against an opening in the pipe and said section of the sealing part has a handle wherein a stroke limiter limiting the axial displacement of the sealing part is allocated to the sealing part and slash all to the controlling attachment element.

Abstract: The invention relates to a cell culture measuring system and to a method for comparative investigations on cell cultures. It is the object of the invention to propose possibilities with which comparative investigations can be carried out on cell cultures under the same conditions on cells which are influenced by a test liquid and on cells which are not influenced by test liquid. In a cell culture measuring system in accordance with the invention, cell cultures are cultivated on a cell culture carrier within a flow passage. An inflow and an outflow for a liquid culture medium and at least two sensors are present. In addition, at least one further inflow for a test liquid is arranged in the flow direction of the culture medium between the inflow for the culture medium and the outflow of the flow passage so that the test liquid flowing through the flow passage by displacement of the culture medium only flows around and/or over some of the cells present on the cell culture carrier.

Abstract: In a method and a device for testing for leakage in a fuel injection valve of an internal combustion engine, a temperature quantity is determined that characterizes the temperature of at least a part of the fuel injection valve. On the basis of this temperature quantity, the presence of a leak is inferred.