Blood information such as hemolysis and a blood coagulation level can be obtained by extracting only reflected light in a plasma layer, and non-invasively and continuously obtaining information only on a plasma component independently of a hematocrit without separating blood components by a mechanical or chemical process. The oil may also be obtained by precipitation from a solution of paroxetine hydrochloride. The control signal generator generates a reference signal and a compensating signal which are corresponding to voltage level of the reference signal. In order to be able to inject fuel with still greater accuracy into the combustion chamber of the engine, the fuel quantity which arrives in the combustion chamber is determined from the signal of a through-flow measuring device. In one embodiment of the high-efficiency lighting elements are light emitting diodes.