Cd and Pb in the “soil-plant” system of Holosiyiv green park area in Kyiv

In this paper, the content of metals (Cd and Pb) was investigated in soil-plant system of Holosiyiv green park area in Kyiv. Kyiv is the capital and largest city of Ukraine, and has an anthropogenic load. Metals pollution in various degrees in green park areas may affect people’s health through different paths. We propose to control the lead contamination in soil because Pb concentration levels were above when compared with background values in almost all samples of soil and exceeded the maximum permissible concentration in sites of top of hills in park. Moreover, the obtained results indicated high concentrations of lead in studied plants; most of them are medicinal and traditionally used by people. The highest phytomass concentration of Pb was observed in Asarum europaeum L., whereas Impatiens parviflora DC and Urtica dioica L. had the highest plant up-taking indexes for both studied metals

Mercury Contamination in Soil, Water, Plants, and Hydrobionts in Kyiv and the Kyiv Region

In this paper, there was investigated the content of mercury in soil, plant, water, and hydrobionts in Kyiv and in the Obukhiv district of the Kyiv region. Studied territory is characterized by high anthropogenic load. The solid waste landfill in the Obukhiv district of the Kyiv region was characterized by the highest content of Hg in soil. Hg concentration in Taraxacum officinale L. was the highest among all studied plants, hence the possibility of recommending this species for phytoremediation of mercury-polluted soils. Mercury bioaccumulation of aquatic organisms (Blicca bjoerkna L., Esox lucius L., Ceratophyllum demersum L.) was much higher than in terrestrial organisms, which indicates the significantly prevailing level of availability and accumulation of mercury for aquatic species in the water environment

Assessment of the activities physiological cost of the defense forces officers in Ukraine using miniature ECG device

IntroductionIn the principles of the organization of armed struggle of the defense forces of most developed countries of the world, considerable attention is paid to the evaluation of combat readiness of the military personnel. This procedure is conditioned by such interconnected goals of the armed struggle as the maximum realization of the combat potential and the minimization of personnel losses. The purpose of the work is to determine the physiological cost of the activities of the soldiers of the Defense Forces of Ukraine with the help of miniature electrocardiographic hardware and software complexes.MethodsIn the research, ultra-miniature ECG devices worn on the body for a long time, so-called wearable “on-body” ECG patch devices, were used in various combat conditions. When analyzing the data, the principle of multi-faceted ECG analysis was implemented, which allows you to obtain complete and physiologically based information, which includes 4 blocks: heart rate variability (HRV), amplitude-time indicators of the ECG, heart rhythm disorders, and psycho- emotional state.ResultsIn this study, a complex index of the functional state formed based on estimates of generally accepted and original indicators of heart rhythm variability, the shape of the teeth and complexes of the electrocardiogram, as well as an index of the psycho-emotional state formed according to the same principles based on the analysis of heart rhythm variability according to the modified McCraty algorithm (USA) was evaluated. Examination with the help of the complex is carried out in a state of rest, sitting or lying down.DiscussionThe sensitivity of the developed monitoring system is good enough to detect the changes in the functional state both in the case of short-term (for hours) intense physical or psycho-emotional stress and more chronic (for days and weeks) stress depending on the nature of the task being done. The proposed methods and means can be considered an important tool to support the commander's decision-making regarding the ability of personnel from the point of view of their functional state to perform combat tasks