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Abstract The elemental status of cattle is one of the important factors, which determine its growth, fertility, fetal development, meat and dairy production, etc. Therefore, the study of content of different elements in cattle organs and tissues and its correlation with cattle characteristics and diet is urgent task. It is also important to develop intravital and low-invasive methods to analyze element content in cattle to regulate its diet during lifetime. In the present work, we have studied the content and distribution of manganese in Hereford cattle from an ecologically clean zone of Western Siberia (Russia). 252 samples were taken from 31 bulls aged 15-18 months. They were collected from various livestock farms in the region and analyzed using atomic absorption spectrophotometry (organs and muscle tissue) and inductively coupled plasma atomic emission spectrometry (hair). The median values of manganese concentration obtained in natural moisture for hair, heart, kidneys, liver, lungs, muscles, spleen, testes, and brain were 25, 0.37, 1.0, 2.6, 0.4, 0.2, 0.4, 0.5, and 0.5 ppm. Accordingly, the concentration of manganese differs significantly in the organs and tissues of animals (H = 188.6, df = 8, p <0.0001). Statistically significant associations of manganese were revealed in pairs: liver-testis, hair-testis, spleen-testis, and heart-brain. The classification of organs and tissues of animals according to the level of content and variability of manganese is carried out. The concentration of manganese in the body is not uniform, most of all it is deposited in the hair and excretory organs of the liver and kidneys. In other organs and muscle tissues, the distribution of manganese is more even and is in the range of 0.2-0.5 ppm. The resulting ranges can be used as a guideline for Hereford cattle bred in Western Siberia. Resumo O status elementar do gado é um dos fatores importantes que determinam seu crescimento, fertilidade, desenvolvimento fetal, produção de carne e laticínios, etc. Portanto, o estudo do conteúdo de diferentes elementos nos órgãos e tecidos do gado e sua correlação com as características do gado e dieta é tarefa urgente. Também é importante desenvolver métodos intravitais e pouco invasivos para analisar o conteúdo de elementos em bovinos para regular sua dieta durante a vida. No presente trabalho, estudamos o conteúdo e a distribuição de manganês em gado Hereford de uma zona ecologicamente limpa da Sibéria Ocidental (Rússia). Foram coletadas 252 amostras de 31 touros com idade entre 15 e 18 meses. Eles foram coletados em diversas fazendas pecuárias da região e analisados por espectrofotometria de absorção atômica (órgãos e tecido muscular) e espectrometria de emissão atômica com plasma indutivamente acoplado (cabelo). Os valores medianos da concentração de manganês obtidos na umidade natural para cabelo, coração, rins, fígado, pulmões, músculos, baço, testículos e cérebro foram 25, 0,37, 1,0, 2,6, 0,4, 0,2, 0,4, 0,5 e 0,5 ppm. Assim, a concentração de manganês difere significativamente nos órgãos e tecidos dos animais (H = 188,6, df = 8, p <0,0001). Associações estatisticamente significativas de manganês foram reveladas em pares: fígado-testículo, cabelo-testículo, baço-testículo e coração-cérebro. É realizada a classificação dos órgãos e tecidos dos animais de acordo com o nível de conteúdo e variabilidade do manganês. A concentração de manganês no corpo não é uniforme, sendo principalmente depositada nos cabelos e nos órgãos excretores do fígado e dos rins. Em outros órgãos e tecidos musculares, a distribuição do manganês é mais uniforme e fica na faixa de 0,2-0,5 ppm. As faixas resultantes podem ser usadas como orientação para o gado Hereford criado na Sibéria Ocidental.

A sharp increase in traffic intensity has a negative impact on the quality characteristics of the traffic flow. Existing road capacity cannot cope with an ever-increasing number of vehicles, resulting in traffic jams

The article discusses measures to improve the environment, presents the measures proposed by the mayor of Krasnodar, describes the advantages of building parks for residents. The project \"SOS! Air\", an interactive map with foci of pollution. The problem of pollution of the center of Krasnodar is described. The project \"General cleaning\" is considered. Conclusions are drawn about the need to preserve a clean environment.

The results of the monitoring of ¹³⁷Cs and ⁹⁰Sr accumulation in the different types of vegetable forages of Western Siberia were presented. The average values of the radionuclides accumulation were revealed. The correlation between the levels of the radionuclides in various forages was found. The variability parts (r w ) in the accumulation of ¹³⁷Cs and ⁹⁰Sr caused by an influence of both the type of forage in various oblasts and environment factors in forages were determined.

A complex of standard hematological parameters was studied using the automatic hematological analyzer PCE 90Vet (USA): WBC (White Blood Cells) - the number of leukocytes; RBC (Red Blood Cells) - the number of red blood cells; HGB (Hemoglobin) - level of hemoglobin; PLT (Platelet) - the number of platelets. In zone I in the heart, the zinc content was 2.4 times higher, 1.6times in the lungs and 1.3 times in the spleen. [...]the pollution of the territory of the Republic of Tyva influenced the level of accumulation and the ratio of heavy metals in the organs and tissues of yaks. According to the data of the Ministry of Health, the incidence of the adult yak population and adolescents was higher by 27 and 65% respectively in the unfavorable zone. In the ecologically unfavorable zone of the Republic of Tyva, yaks experienced an increased incidence of cardiovascular disease, impaired activity of the gastrointestinal tract, liver diseases, hoof deformation and an increase in prenatal mortality. [...]in the Republic of Tyva the yak population in the pollution zone has a large spectrum of changes, especially in the accumulation of heavy metals in organs and tissues, an increase in the frequency of somatic chromosomal instability and a decrease in resistance to diseases.

Different types of nanoparticle have been produced that are used as Fillers in the development of new polymer composites: nanoclays, carbon nanosystems, silica nanoparticles, metal oxides, inorganic salts, and so on. The introduction of a small amount of \"nanoclay\" into the polymer ensures an improvement in the structural, thermal, barrier, and fire resistance properties of the composite material without any significant increase in its density. Konovalova et al investigate the effect of modified particles of clay filler on the properties of polybutadiene.

The article discusses the main criteria for assessing the design of vehicles in the field of passive safety. Road safety is influenced by a large number of factors, among the most negative factors are road accidents and their consequences. All categories of the population die and get injured in road accidents, which entails a decrease in the population of the country and the level of health, life expectancy, length of the working period, and distortion of the age pyramid. Existing methods for assessing measures to improve passive safety do not fully allow establishing a correspondence between the characteristics of vehicle structural elements that ensure its passive safety and the severity of the consequences in an accident. This situation is mainly due to the impossibility of assessing the passive safety of the car as a whole, by one indicator, since the applied assessment is based on the requirements of regulatory documents. In this case, the most optimal analysis will be the analysis of the consequences of real road accidents, which allows to identify the most dangerous conditions of road accidents and traumatic elements of the structure of vehicles. The result of the assessment of measures to improve passive safety is an accurate assessment of the severity of human injury in an accident and the risk of an accident. The existing and prospective criteria governing passive safety indicators cover a small number of all types of road accidents. Therefore, expanding the scope of application of safety criteria to the widest possible range of types of road accidents and taking into account the anthropological parameters of a person is the most significant potential way to reduce the number and severity of injuries in road accidents.

Currently, there is a high activity in the construction of multi-storey residential buildings in large cities. This causes an increase in pedestrian flows and traffic intensity in various areas of cities, but most streets and roads are not designed for a given number of pedestrians and vehicles. In turn, this leads to a decrease in the safety of pedestrian traffic in these areas.

Total (gross) content of macroand microelements (As, B, Ba, Be, Ce, Co, Cr, Cu, Fe, Ga, La, Mn, Mo, Nb, Ni, P, Pb, Se, Sn, Sr, Ti, V, Y, Yb, Zn, Zr) in samples of soil was determined by the method of optical atomic emission spectrometry with the use of a double-jet argon plasmatron. In nitric-acid solutions of plants ash, K, Na, P, Ca, Mg, Li, Fe, Mn, Zn, Co, Cu, Pb and Cd were determined by flame atomic absorption spectrometry (FAAS) on an AAnalyst400 (Perkin Elmer) spectrometer. The result of the studies has shown that in soils and fodder herbs of agricultural districts of Siberia, the content of heavy metals - Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Zn, Sr - does not exceed the environmentally acceptable levels. In industrial districts of Kuzbass, the dependence of heavy metals concentration in forage herbs of farmland on the level of gas-and-dust pollution of the environment by a metallurgical company has been determined. In the territory of the Republic of Tuva, in the areas of extraction of non-ferrous metal ores with local areas of technogeneous contamination of soils, plants and waters with heavy metals, pathologies in development and higher perinatal death of yaks were detected, as compared to the environmentally safe locations of their breeding. The problem of balanced and high-quality food has become especially urgent due to the results of the epigenetic research, which showed that the most genes are not autonomous, as the classical theory of heredity used...

The results of the monitoring of 137Cs and 90Sr accumulation in the different types of vegetable forages of Western Siberia were presented. The average values of the radionuclides accumulation were revealed. The correlation between the levels of the radionuclides in various forages was found. The variability parts (rw) in the accumulation of 137Cs and 90Sr caused by an influence of both the type of forage in various oblasts and environment factors in forages were determined.