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The purpose of the work is to study the dynamics of the volume and structure of forensic medical research on cases of non-violent death in the Russian Federation for the period from 2016 to 2020 using the example of two regions of the Federation that differ in socio-economic terms. The material for the study was the annual reports of the «St. Medical Examination» and «Novgorod Bureau of Forensic Medical Examination». It was established that during the study period in St. Petersburg and the Novgorod region, non-violent death was dominant in the structure of forensic medical examinations of corpses, accounting for about 80%. The leading place was occupied by diseases of the circulatory system and neoplasms, they were more common among residents of the Novgorod region. A positive fact was that since 2016, the residents of the Novgorod region, in contrast to the residents of St. Petersburg, there has been a trend towards a decrease in the number of deaths from diseases of the cardiovascular system. Mortality from oncological diseases increased from year to year in both subjects of the Federation. The most rare causes of death were infectious diseases and diseases of the nervous system. For both groups of diseases, higher mortality was also among residents of the Novgorod region. Both in St. Petersburg and in the Novgorod region there was a gradual decrease in the total number of cases of stillbirths and deaths of children under the age of 1 year. For the entire study period, this indicator, as for most diseases, was higher in the Novgorod region. In the year of the spread of a new coronavirus infection, mortality from most non-communicable diseases increased.

Relevance of studying the conditions and mechanisms for the formation of water transport trauma is evaluated on the example of forensic medical situational examination of a young girl, who received multiple injuries with a propeller and keel of a speedboat. The victim died from drowning in water. Authors present the features of the morphology of chopped injuries on the skin and flat bones of the skull, proving the fact that they were caused by the screw of one of the three vehicles suspected of hitting victim and causing her severe traumatic brain injury during swimming time. Attention is drawn to the need for strict adherence to safety rules on water, including in places of mass rest and large crowds.

Bullets without a metal core are almost the only ones currently produced for the OSA complex. In the available forensic literature there are small number of cases of the description of injuries using this cartridge. The article presents a case from practice when, in the course of forensic medical research, not only the type of cartridge used was established, but also the conclusion was drawn about the use of barrelless firearms of limited destruction, equipped with two cartridges at the same time - the PB-2 Egida pistol. This allowed police authorities to quickly identify the criminal person.

The purpose of the work is to show how, from the day it was created, the cartridges for barrelless firearms of limited destruction of the OSA complex changed. The main structural changes of cartridges of caliber 18x45 mm and 18.5x55 mm, affecting the nature of damage to the human body, are noted. It is shown that the general patterns of damage from modern bullets without a metal core are in many respects similar to the damage resulting from the firing of bullets of old specimens with a metal core. General recommendations are given for assessing the damage caused by pistols of the OCA complex.

The energy-dependent Andreev reflection eigenvalues determine the transport properties of normal-superconducting systems. We evaluate the eigenvalue density to get insight into the formation of resonant electron-hole transport channels. The circuit-theory-like method developed can be applied to any generic mesoscopic conductor or combinations thereof. We present the results for experimentally relevant cases of a diffusive wire and a double tunnel junction.