The elastic and conducting medium consists of ionic lattice and gas of electrons. The external el... more The elastic and conducting medium consists of ionic lattice and gas of electrons. The external electromagnetic field acts on the particles and excites their motion. Under usual conditions the direct electromagnetic force affecting the ionic structure is screened by the electron collisions drag force, so that no mechanical excitation is observed. The penetrating electromagnetic wave is strongly damped in a thin surface skin layer. The screening effect can be disturbed by an external constant magnetic field. In such a case the mechanical excitation of the ionic lattice can propagate through the sample as an elastic wave, e.g. [1]. On the other hand the ionic movement generates the secondary electromagnetic wave which accompanies the elastic wave and represents the elastic mode of the electromagnetic wave, e.g. [2]. It propagates with the acoustic wave velocity and weak attenuation and can be detected at the opposite side of the conducting sample. There are many possibilities of the ut...
Electromagnetic and Acoustic Waves in Bioengineering Applications, 2021
The textbook deals with the analysis of oscillations, mechanical and electromagnetic waves and th... more The textbook deals with the analysis of oscillations, mechanical and electromagnetic waves and their use in medicine. The individual chapters are based on the theoretical foundations of the issue and describe the use of relevant disciplines in medical practice. The chapter on oscillations is a starting point for explaining the basic principles of waves and focuses on explaining the nature of magnetic resonance. The chapter on mechanical waves explains the nature and properties of sound, infrasound, ultrasound, and medical applications, such as lithotripsy or ultrasonography. The chapter on electromagnetic waves discusses their basic principles, origin and properties, and applications of individual frequency bands from long wavelengths to gamma radiation in therapy and diagnostics. The chapter on wave manifestations explains phenomena such as interference and diffraction and their use in applications such as optical imaging systems, holography, virtual reality, etc. The description c...
Advances in Electrical and Electronic Engineering, 2011
The paper deals with the cerebral arterial system investigation by means of electrical modelling ... more The paper deals with the cerebral arterial system investigation by means of electrical modelling and simulations. The main attention is paid to the brain arterial circle malformations (stenoses and aneurysms) and their determination and evaluation by computer-aided methods as tools of a non-invasive diagnostics. The compensation possibilities of brain arterial circle in case of presence of concrete arterial malformations are modelled and simulated. The simulation results of brain arteries blood pressures and volume flow velocities time dependences are presented and discussed under various health conditions.
Advances in Electrical and Electronic Engineering, 2011
The paper deals with the modelling and the simulation of physiological fluid systems laying empha... more The paper deals with the modelling and the simulation of physiological fluid systems laying emphasise on the human vascular system. The presented simulation method has been developed as a helpful tool for the computer-aided non-invasive diagnostics of living bodies. Using the electromechanical analogy between physiological and electrical values the introduced method makes possible the description and 3D representation of the non-linear characteristics of the human haemodynamics as well. The simulation procedure and the obtained results verified by the experiment enable to visualize all physiological and pathophysiological states of the human vascular system.
Advances in Electrical and Electronic Engineering, 2006
At present a non-destructive testing of conducting materials becomes very important one in connec... more At present a non-destructive testing of conducting materials becomes very important one in connection with monitoring and control of strategic technical facilities, e.g. nuclear power plants. There are more methods of material testing and evaluation and every of them has its advantages and disadvantages. Recently the electromagnetic methods are in increasing interest. There are many ways of conducting material testing. One of them often used utilises investigation of eddy currents induced in the surface layer by means of a proper coil. The arrangement is very simple and inexpensive but it offers only local information on cracks and other inhomogeneities in the thin surface layer. On the other hand there exist a method based on an electromagnetic – acoustic transducer (EMAT), which is able to generate and detect acoustic wave in a conducting body in a contact-less way. The present paper deals with a survey of EMATs for investigation of thin metallic layers by means of Lamb waves. The...
Advances in Electrical and Electronic Engineering, 2008
The paper deals with material electromagnetic non-destructive testing (eNDT) with emphasize on ed... more The paper deals with material electromagnetic non-destructive testing (eNDT) with emphasize on eddy current testing (ECT). Various modifications of ECT sensing are compared and discussed from the desired detected signal characteristics point of view. Except of the optimization of usual probe coils arrangements for the concrete applications, the new magnetic sensors as giant magneto-resistance (GMR) and spin dependent tunneling (SDT) are presented. The advanced ECT sensors are characterized by their sensitivity, frequency range and sensor dimensions
International Journal of Applied Electromagnetics and Mechanics, 2012
Modelling ofbloodflowinvesselsoffersauseful toolfor vascular systemexamination. Propagationof blo... more Modelling ofbloodflowinvesselsoffersauseful toolfor vascular systemexamination. Propagationof bloodpressure and blood flow pulses are analyzed in the present paper. The pulses shapes are significantly influenced by their reflections at vessels inhomogeneities. The whole body arterial model is used for different phenomena investigation. Influence of waves' reflections on their profiles is examined. Consequences of vessels bifurcations, stenosis and sclerosis are simulated and the simulated results are compared with experimental data taken by means of PPG.
The present contribution deals with the educational methods which would support education of youn... more The present contribution deals with the educational methods which would support education of young people and the whole society in science. After the historical overview the methods of formal, informal and non-formal education are described. The main attention is devoted to the non-formal methods which are important in the formation of the top level of talented young people, who represent the decisive element of the effective and sustainable development of the society and its competitiveness
The present paper deals with some theoretical derivations connected with very efficient method of... more The present paper deals with some theoretical derivations connected with very efficient method of solution of hydrodynamic problems of blood flow in human cardiovascular system. The electromechanical analogy of liquid flow in a tube and electromagnetic wave propagating along an electric transmission line is discussed. We have derived a detailed circuit-like model of an elementary section of the elastic tube with viscose Newtonian liquid. The analogy harmonic current electrical circuit has been designed.
IEEE Transactions on Appiled Superconductivity, 2005
The aerospace and aeronautical industries pay much attention to improve flight safety of the airl... more The aerospace and aeronautical industries pay much attention to improve flight safety of the airlines. In aircraft design it is important to couple low structural weight with high damage tolerance. For this reason, a new class of advanced composite materials, named Fiber/Metal Laminates (FML), which combine the best features of organic matrix composites and metals, are used. In this work,
The elastic and conducting medium consists of ionic lattice and gas of electrons. The external el... more The elastic and conducting medium consists of ionic lattice and gas of electrons. The external electromagnetic field acts on the particles and excites their motion. Under usual conditions the direct electromagnetic force affecting the ionic structure is screened by the electron collisions drag force, so that no mechanical excitation is observed. The penetrating electromagnetic wave is strongly damped in a thin surface skin layer. The screening effect can be disturbed by an external constant magnetic field. In such a case the mechanical excitation of the ionic lattice can propagate through the sample as an elastic wave, e.g. [1]. On the other hand the ionic movement generates the secondary electromagnetic wave which accompanies the elastic wave and represents the elastic mode of the electromagnetic wave, e.g. [2]. It propagates with the acoustic wave velocity and weak attenuation and can be detected at the opposite side of the conducting sample. There are many possibilities of the ut...
Electromagnetic and Acoustic Waves in Bioengineering Applications, 2021
The textbook deals with the analysis of oscillations, mechanical and electromagnetic waves and th... more The textbook deals with the analysis of oscillations, mechanical and electromagnetic waves and their use in medicine. The individual chapters are based on the theoretical foundations of the issue and describe the use of relevant disciplines in medical practice. The chapter on oscillations is a starting point for explaining the basic principles of waves and focuses on explaining the nature of magnetic resonance. The chapter on mechanical waves explains the nature and properties of sound, infrasound, ultrasound, and medical applications, such as lithotripsy or ultrasonography. The chapter on electromagnetic waves discusses their basic principles, origin and properties, and applications of individual frequency bands from long wavelengths to gamma radiation in therapy and diagnostics. The chapter on wave manifestations explains phenomena such as interference and diffraction and their use in applications such as optical imaging systems, holography, virtual reality, etc. The description c...
Advances in Electrical and Electronic Engineering, 2011
The paper deals with the cerebral arterial system investigation by means of electrical modelling ... more The paper deals with the cerebral arterial system investigation by means of electrical modelling and simulations. The main attention is paid to the brain arterial circle malformations (stenoses and aneurysms) and their determination and evaluation by computer-aided methods as tools of a non-invasive diagnostics. The compensation possibilities of brain arterial circle in case of presence of concrete arterial malformations are modelled and simulated. The simulation results of brain arteries blood pressures and volume flow velocities time dependences are presented and discussed under various health conditions.
Advances in Electrical and Electronic Engineering, 2011
The paper deals with the modelling and the simulation of physiological fluid systems laying empha... more The paper deals with the modelling and the simulation of physiological fluid systems laying emphasise on the human vascular system. The presented simulation method has been developed as a helpful tool for the computer-aided non-invasive diagnostics of living bodies. Using the electromechanical analogy between physiological and electrical values the introduced method makes possible the description and 3D representation of the non-linear characteristics of the human haemodynamics as well. The simulation procedure and the obtained results verified by the experiment enable to visualize all physiological and pathophysiological states of the human vascular system.
Advances in Electrical and Electronic Engineering, 2006
At present a non-destructive testing of conducting materials becomes very important one in connec... more At present a non-destructive testing of conducting materials becomes very important one in connection with monitoring and control of strategic technical facilities, e.g. nuclear power plants. There are more methods of material testing and evaluation and every of them has its advantages and disadvantages. Recently the electromagnetic methods are in increasing interest. There are many ways of conducting material testing. One of them often used utilises investigation of eddy currents induced in the surface layer by means of a proper coil. The arrangement is very simple and inexpensive but it offers only local information on cracks and other inhomogeneities in the thin surface layer. On the other hand there exist a method based on an electromagnetic – acoustic transducer (EMAT), which is able to generate and detect acoustic wave in a conducting body in a contact-less way. The present paper deals with a survey of EMATs for investigation of thin metallic layers by means of Lamb waves. The...
Advances in Electrical and Electronic Engineering, 2008
The paper deals with material electromagnetic non-destructive testing (eNDT) with emphasize on ed... more The paper deals with material electromagnetic non-destructive testing (eNDT) with emphasize on eddy current testing (ECT). Various modifications of ECT sensing are compared and discussed from the desired detected signal characteristics point of view. Except of the optimization of usual probe coils arrangements for the concrete applications, the new magnetic sensors as giant magneto-resistance (GMR) and spin dependent tunneling (SDT) are presented. The advanced ECT sensors are characterized by their sensitivity, frequency range and sensor dimensions
International Journal of Applied Electromagnetics and Mechanics, 2012
Modelling ofbloodflowinvesselsoffersauseful toolfor vascular systemexamination. Propagationof blo... more Modelling ofbloodflowinvesselsoffersauseful toolfor vascular systemexamination. Propagationof bloodpressure and blood flow pulses are analyzed in the present paper. The pulses shapes are significantly influenced by their reflections at vessels inhomogeneities. The whole body arterial model is used for different phenomena investigation. Influence of waves' reflections on their profiles is examined. Consequences of vessels bifurcations, stenosis and sclerosis are simulated and the simulated results are compared with experimental data taken by means of PPG.
The present contribution deals with the educational methods which would support education of youn... more The present contribution deals with the educational methods which would support education of young people and the whole society in science. After the historical overview the methods of formal, informal and non-formal education are described. The main attention is devoted to the non-formal methods which are important in the formation of the top level of talented young people, who represent the decisive element of the effective and sustainable development of the society and its competitiveness
The present paper deals with some theoretical derivations connected with very efficient method of... more The present paper deals with some theoretical derivations connected with very efficient method of solution of hydrodynamic problems of blood flow in human cardiovascular system. The electromechanical analogy of liquid flow in a tube and electromagnetic wave propagating along an electric transmission line is discussed. We have derived a detailed circuit-like model of an elementary section of the elastic tube with viscose Newtonian liquid. The analogy harmonic current electrical circuit has been designed.
IEEE Transactions on Appiled Superconductivity, 2005
The aerospace and aeronautical industries pay much attention to improve flight safety of the airl... more The aerospace and aeronautical industries pay much attention to improve flight safety of the airlines. In aircraft design it is important to couple low structural weight with high damage tolerance. For this reason, a new class of advanced composite materials, named Fiber/Metal Laminates (FML), which combine the best features of organic matrix composites and metals, are used. In this work,
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