Effect of Electrohydraulic Discharge on Viscosity of Human Blood

Electrohydraulic plasma discharge is a novel technology with high efficiency and high speed and can generate chemically active species like free radicals, ions, atoms, and metastables, accompanied by ultraviolet light emission and shock pressure waves. The aim of this work is to examine the effect of electrohydraulic discharge (EHD) system on viscosity of the human blood after different exposure time. The voltage pulsation introduces electric field and temperature jump and at the same time leads to haemolysis of the blood cells. The ratio of blood viscosity under the influence of magnetic field to the viscosity in the absence of magnetic field is directly proportional to the applied magnetic field .

Output Voltage Pulsation as Source of Diagnostic Information About Commutator-Type DC Generators

The paper deals with operational issues related to DC generators of commutator types. Specific aspects of commutation are discussed in details as well as the effect of physical phenomena onto formation of the constant component in the pulsation waveform of the output voltage supplied by DC generators. The component of pulsation is the result of many physical phenomena and, according to knowledge sourced from the related literature, is split into several components. Each of these components is discussed in systematic way on the basis of theoretical background provided by referenced textbooks and papers and then verified by comparison against results of own research studies carried out in the ITWL laboratory. Particular attention is paid to effects associated with the commutation process, with consideration of symptoms related to failures, possibilities of their detection and prevention. Some other effects associated with variation in the nature of pulsation are discussed as well when defects such as shorts or breaks occur in the generator armature or stator. It has been demonstrated that those components of DC generators can be diagnosed by analysis of parameters in pulsation components.