[Identification of the mode of stab-and-hack wound infliction to the chest based on wound features].

The objective of this study was to obtain morphological characteristics of stab-and-hack wounds inflicted by falling down on the knife blade. A formula is derived based on the results of discrimination analysis that can be used in combination with wound morphological features to differentiate between chest stabbing modes.

[State-of-the-art of mathematical modeling of postmortal thermodynamics for the time of death determination].

Mathematical modeling of postmortal themperature used at present for definition of prescription of the death is shown in the article from a position of theory ofprobablibistic functions. Accuracy of examined techniquies is analized by comparison of modeled temperatures with real, fixed by the authors on a material of 158 expert supervisions. The conclusion about inadmissibility of practical use of some mathematical expressions is made in connection with low accuracy of the mathematical device used in them.

[Using some modern mathematical models of postmortem cooling of the human body for the time of death determination].

Mathematical questions of data errors of modern thermometrical models of postmortem cooling of the human body are considered. The main diagnostic areas used for thermometry are analyzed to minimize these data errors. The authors propose practical recommendations to decrease data errors of determination of prescription of death coming.

[Methodological questions in resolving the problem of determining the time of death]. / Voprosy metodologii v reshenii problemy opredeleniia davnosti nastupleniia smerti.

Presents the modern concept of evaluating the time of death, the philosophy of solving this problem, and approaches to its solution. Analyzes the procedure and choice of correct approach to problem solution from methodological viewpoint and as a problem at the interface of medicine and technology.

[A systems approach to the study of the problem of suicide and the prospects for its use in forensic medicine]. / Sistemnyi podkhod k izucheniiu problemy suitsida i perspektivy ego ispol'zovaniia v sudebnoi meditsine.

Discusses the total system's approach to analysis of the problem of suicide with due consideration for the etiology. Assesses the prospects of using this approach in forensic medicine for predicting the time course and tendencies in the mortality structure for certain regions.

[The mechanisms and characteristics of blood plasma potassium kinetics in the early postmortem period]. / Mekhanizmy i osobennosti kinetiki kaliia plazmy krovi v rannem postmortal'nom periode.

Studies of cadaveric and donor blood samples revealed a relationship between the temperature, extra- and intracellular volumes of water, red cell membrane status, time course of ionic composition of the blood, and thermodynamic effects emerging during cooling of tissues. This points to obligatory consideration for nosologic entity, specific features of patho- and thanatogenesis when assessing the time of death.

[The morphological equivalents of the peripheral nervous system reaction in certain types of death]. / Morfologicheskie ékvivalenty reaktsii perifericheskoi nervnoi sistemy pri nekotorykh vidakh smerti.

The article deals with the results of analysis of morphological changes in peripheral nervous system in some types of violent and sudden death. They reflect characteristics of morpho- and pathogenesis and can be used to validate the main cause of death.

[Cystoscopy and endovesical biopsy in renal tuberculosis]. / Tsitoskopiia i éndovezikal'naia biopsiia pri tuberkuleze pochki.

Cystoscopy and endovesical biopsy of the bladder wall were performed at early stages of investigation prior to the onset of tuberculostatic treatment in 77 patients with destructive renal tuberculosis, verified both bacteriologically and histologically. Cystoscopy proved to be valuable in 83.2% of the cases, particularly so where the destruction focus communicated with the renal calyx-pelvis system. Cystoscopic symptoms of renal tuberculosis occurred at the following rates: tubercles in 6.5%, focal hyperemia, in 18.2%, erosion and ulcer, in 9.1%, bullous edema of the ureteral opening, in 11.6%, all kinds of changes of ureteral opening, in 37.6%. There were no visible changes of vesical mucosa in 16.8%. The pattern of mucosal changes correlated with the markedness of X-ray morphological changes in the kidney. Endovesical biopsy was positive in 52%, its results, being significant in cases of open destructive developments and ureteral affection. The value of endovesical biopsy increased where it was performed at the peak of clinical and cystoscopic symptoms, at early stages of disease, before the onset of tuberculostatic treatment. False-negative results of endovesical biopsy do not exclude renal tuberculosis. High value of cystoscopy and endovesical biopsy makes them up-to-date diagnostic tests for renal tuberculosis.

[Dynamics of the nuclear DNA content in the liver, skeletal muscles and myocardium of the rat in the postmortem period (a microspectrophotometric study)]. / Dinamika soderzhaniia iadernoi DNK v pecheni, skeletnoi i serdechnoi myshtsakh krysy v postmortal'nom periode (mikrospektrofotometricheskoe issledovanie).

A comparative microspectrophotometric analysis of changes in nuclear DNA in the liver, skeletal muscle and myocardium of noninbred male albino rats which had died of cerebrocranial injury was conducted during three days following death. A decrease in the content of nuclear DNA within an interval of 30-72 h can be depicted mathematically by regression curves of the type M(t) = e-at+b. The data obtained allowed one to mathematically show the postmortem changes in DNA of the test material.