Determination of duration of fresh water exposure on corpse’s skin by dispersion value of its electrical conductivity

Vavilov A.Yu.; Rykunov I.A.

doi:https://doi.org/10.17116/sudmed20246705124

Vavilov A.Yu.

Izhevsk State Medical Academy

ORCID: 0000-0002-9472-7264

Rykunov I.A.

Izhevsk State Medical Academy;
Bureau of Forensic Medical Expertise

ORCID: 0000-0002-5522-0292

Determination of duration of fresh water exposure on corpse’s skin by dispersion value of its electrical conductivity

Authors:

Vavilov A.Yu., Rykunov I.A.

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Journal: Forensic Medical Expertise. 2024;67(5): 24‑28

DOI: 10.17116/sudmed20246705124

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To cite this article:

Vavilov AYu, Rykunov IA. Determination of duration of fresh water exposure on corpse’s skin by dispersion value of its electrical conductivity. Forensic Medical Expertise. 2024;67(5):24‑28. (In Russ.)
https://doi.org/10.17116/sudmed20246705124

Подписка 2026 Судебно-медицинская экспертиза (Forensic Medical Expertise)

Использование инфографики авторами научных работ

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OBJECTIVE

Objectification of experts’ conclusions about the duration of corpse’s stay in the water on indicators of dispersion of electrical conductivity of its skin.

MATERIAL AND METHODS

Research aimed at objectifying the conclusions of experts about the duration of corpse’s stay in the water on the indicators of dispersion of electrical conductivity of its skin was conducted using the experimental material from the corpses of 68 persons of different sex and age, who died for different reasons.

RESULTS

Three temperature ranges (1—24, 25—30, 31—40 °C) have been identified on the basis of regression analysis and mathematical models, describing the dynamics of electrical conductivity dispersion coefficient change depending on the duration of corpse’s skin contact with the water of specified temperatures, have been created.

CONCLUSION

Formulas for calculating the period of interest for the researcher have been developed and the boundaries of confidence intervals for each temperature range have been determined, taking into account its diagnostic applicability. A computer program has been written to facilitate routine calculations on the proposed method in order to simplify the practical application of the suggested procedure.

Keywords:

impedancemetry

skin

electrical conductivity

duration of freshwater exposure

diagnostic procedure objectification

Authors:

Vavilov A.Yu.

Izhevsk State Medical Academy

ORCID: 0000-0002-9472-7264

Rykunov I.A.

Izhevsk State Medical Academy;
Bureau of Forensic Medical Expertise

ORCID: 0000-0002-5522-0292

Received:

20.06.2023

Accepted:

22.06.2023

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