W artykule przedstawiono możliwości wykorzystania Racelogic Performance Box – urządzenia szeroko stosowanego w środowisku motoryzacyjnym do pomiarów parametrów dynamiki ruchu samochodów – do badań ruchu hulajnóg elektrycznych w zmiennych warunkach drogowych. Korzystając z jego możliwości technicznych, w oparciu o własną metodologię wykonano badania wybranych parametrów ruchu popularnych modeli hulajnóg elektrycznych dostępnych na polskim rynku. Analizując zarejestrowane w urządzeniu dane autor szukał odpowiedzi na pytanie, czy urządzenie Performance Box może być wykorzystywane do badań wykonywanych w ramach opinii wydawanych przez biegłych ze specjalności badania wypadków drogowych.
Working in an underground coal mine is undoubtedly associated with a lot of stress. This promotes the abuse of psychoactive substances – ethyl alcohol, but also medicines and narcotics. Drug tests are not routinely performed in mines. A 40-year-old hard coal miner suddenly fell while working and lost consciousness, followed by a seizure. Sudden cardiac arrest occurred, which could not be restored by cardiopulmonary resuscitation. The forensic autopsy did not determine the cause of death. However, it allowed to exclude traumatic death and revealed only minor pathological changes. Toxicological analyses of blood and urine performed using liquid chromatography coupled with mass spectrometry showed, among others: the presence of α-PiHP (α-pyrrolidinoisohexanophenone) at a concentration of 0.062 μg/mL and 0.163 μg/mL, respectively, the metabolite of α-PiHP (OH-α-PiHP, 4-hydroxy-α-pyrrolidinoisohexanophenone) at a concentration of 0.080 μg/mL and 1.50 μg/mL, and tramadol at concentrations of 1.60 μg/mL and 15.9 μg/mL (toxic concentration in blood). In cases of death among hard coal miners, it is always justified to collect biological material for toxicological tests and to order analyses for the presence not only of ethyl alcohol, but also of medicines and narcotics. This may be crucial to determining the cause of death and for post-accident investigation in the workplace.
Chemical micro-traces belong to the group of forensic traces. In the case of this type of traces, we are dealing with group identification. Nonetheless, they are a very valuable and often the only procedural source of information about a crime that has taken place, and their evidential significance increases, in particular, in situations where it has not been possible to secure forensic traces in the course of the conducted activities, which would allow for individual identification of a perpetrator. The purpose of this article is to show the importance of chemical micro-traces in clarifying the circumstances of an incident and identifying a perpetrator on the basis of an opinion made in 2020 at Forensic Laboratory of the Voivodeship Police Headquarters in Kraków concerning a road accident which resulted in the death of a young woman.
