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Wyniki 1-1 spośród 1 dla zapytania: authorDesc:"IVAYLO IVANOV"

» Electronic system for analyzing the electrical resistance of biological tissue in forensics

ANELIYA MANUKOVA

IVAYLO IVANOV

In forensics there is a continuous development of new methods for analyzing the condition of the objects in order to improve the quality of the manipulations and operations as well as the accuracy of the conclusions made. There is no objective technical assessment of the qualitative characterization of the analyzed object to be applied to the expertise. Obtaining good-quality results in determining the time of death, i.e. the event requires performance of accurate operations of the medical process of object examination by using modern technical means. Changing of the electrical resistance of tissues is an significant parameter that helps in proper judgment of postmortem changes of studied objects. This brings also the need for development of accurate electronic system for measuring the electrical resistance of tissue at postmortem changes. The methods for analyses are based on the ability of tissue to be at the same time a conductor and a dielectric. Electrical and dielectric permittivity of an area is a complex function - on one hand are the parameters of influential currents and voltages together with their frequencies, and on the other hand is the physiological state of studied objects. The purpose of this article is to present an electronic system for testing the electrical resistance of tissue in running postmortem changes, aiming to increase efficiency in the collection of objective evidences - that are applied to the medical expertise in forensics. Analysis of methods for measuring the resistance with DC To identify and diagnose the condition of a given structure in medicine, it can be used the specific electrical resistance of the tissue. In Table 1 is presented the data on its values for various analyzed structures. Measurement of specific electrical resistance of tissue  Two-probe method Th[...] więcej»
w zeszycie ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA 2011/6

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