DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI最新文献_第10页

Effects of diet-induced obesity and its correction on sex hormone levels and behavioral featurеs of male Wistar rats 饮食性肥胖及其纠正对雄性Wistar大鼠性激素水平和行为特征的影响

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-433-443

T. A. Mityukova, O. Y. Poluliakh, K. N. Chudilovskaya, A. A. Basalai, Y. A. Rudnichenko, T. Khrustaleva, S. Hubkin

{"title":"Effects of diet-induced obesity and its correction on sex hormone levels and behavioral featurеs of male Wistar rats","authors":"T. A. Mityukova, O. Y. Poluliakh, K. N. Chudilovskaya, A. A. Basalai, Y. A. Rudnichenko, T. Khrustaleva, S. Hubkin","doi":"10.29235/1561-8323-2022-66-4-433-443","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-4-433-443","url":null,"abstract":"Obesity causes a wide range of pathophysiological consequences in the body, affecting the sphere of hormonal and psycho-emotional regulation. The aim of the study is to investigate the effect of a high-calorie diet on the development of obesity, reproductive status hormone levels and behavioral features of male Wistar rats, as well as the possibility of normalizing the identified shifts with non-medicinal options for obesity correction. Experiments were performed on 80 sexually mature male Wistar rats for 16 weeks and included 6 groups of animals, taking into account the diet (standard vivarium diet, highcalorie diet and transition from a high-calorie diet to a standard diet at the 2nd stage of the experiment) with or without the moderate physical activity in the form of treadmill running at the 2nd stage – the last 8 weeks of the experiment. A longterm high-caloric diet (16 weeks) caused visceral obesity, elevated glucose, cholesterol and triglyceride levels, dramatically decreased serum testosterone and estradiol levels, and depression manifestations in the Porsolt test in male Wistar rats. Successful correction of obesity, metabolic shifts and depressive behavior in rats was achieved by switching to a balanced diet during the last 8 weeks of the experiment. Normalization of testosterone and estradiol levels against the background of an increased serum luteinizing hormone level occurred in rats receiving a high-calorie diet (16 weeks) with the connection of physical exercise during the last 8 weeks of the experiment. Complex correction of obesity, which included the transition to a standard diet and exercise during the last 8 weeks of the experiment, led to a dramatic 2-fold increase in testosterone levels compared to control and a hyperactive phenotype in male Wistar rats. There is a close relationship between the depression development and testosterone levels in obesity and its correction.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49126561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment and intra-regional differences in the soil vulnerability of the agricultural lands of Belarussian Polesye to droughts under warming climate 气候变暖下白俄罗斯Polesye农业用地土壤易受干旱影响的评估和区域内差异

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-08 DOI: 10.29235/1561-8323-2022-66-4-444-453

A. Chervan, V. Melnik, V. Yatsukhno

{"title":"Assessment and intra-regional differences in the soil vulnerability of the agricultural lands of Belarussian Polesye to droughts under warming climate","authors":"A. Chervan, V. Melnik, V. Yatsukhno","doi":"10.29235/1561-8323-2022-66-4-444-453","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-4-444-453","url":null,"abstract":"A quantitative assessment of the areas of vulnerable soils to droughts was presented for the first time and a series of maps was compiled to identify soils of agricultural lands in the zone of the most pronounced risk on the basis of the most complete agrometeorological information in comparison with other studies. The article presents the results of assessing the soil vulnerability (predisposition or susceptibility) of agricultural lands to droughts in the region of Belarusian Polesye. To determine the degree of its manifestation, it is proposed to use such soil-hydrological constants of soil moisture availability as maximum field capacity moisture, rupture of capillary bonds and dynamics of change in their indicators during the growing season (April–October) over a 30-year period (1989–2018). The series of digital maps of the vulnerability of agricultural land use soils to droughts at the level of the region, administrative districts and individual agricultural organizations was compiled using the GIS technologies. The grouping of the administrative regions of Belarusian Polesye according to the ratio of agricultural land areas with varying degrees of soil vulnerability to droughts was carried out in order to develop territorially differentiated measures for adaptation and mitigation of their negative impact on agroecosystems. The obtained research results have found practical application in the development of measures to mitigate the negative impact of soil droughts on agricultural production. It is concluded that in the context of an increase in the number and duration of atmospheric droughts in the region, the need to apply the results of assessing the vulnerability of soils to their adverse effects is mandatory when substantiating and applying measures to adapt agricultural activities to mitigate the negative effects of droughts.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43211908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Goursat’s problem on the plane for a quasilinear hyperbolic equation 拟线性双曲方程平面上的Goursat问题

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-09-07 DOI: 10.29235/1561-8323-2022-66-4-391-396

V. Korzyuk, O. Kovnatskaya, V. A. Sevastyuk

引用次数: 3

Role of the cells of the system of mononuclear phagocytes and regulatory T-lymphocytes in the formation of the state of immunosuppression in sepsis 单核吞噬细胞和调节性T淋巴细胞系统细胞在败血症免疫抑制状态形成中的作用

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-330-337

П. Титов, М. О. Трусевич, Ю. Л. Горбич, Academician Leonid P. Titov, Margarita O. Trusevich, Yury L. Gorbich

{"title":"Role of the cells of the system of mononuclear phagocytes and regulatory T-lymphocytes in the formation of the state of immunosuppression in sepsis","authors":"П. Титов, М. О. Трусевич, Ю. Л. Горбич, Academician Leonid P. Titov, Margarita O. Trusevich, Yury L. Gorbich","doi":"10.29235/1561-8323-2022-66-3-330-337","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-3-330-337","url":null,"abstract":"Sepsis still represents one of the leading causes of death in hospitalized patients worldwide, and its incidence is increasing. Changes in the relative and absolute blood levels of monocytes, dendritic cells, myeloid suppressor cells, and regulatory T-lymphocytes in the blood of patients with sepsis and septic shock were studied on the 3rd–4th day after diagnosis in order to identify the stage of immunosuppression. 33 patients with sepsis (19 men and 14 women, age 57.1 ± 19.9 years) and 6 patients with septic shock (2 men and 4 women, age 49.3 ± 19.6 years) were examined. The control group included 30 healthy donors. Subpopulations of monocytes, dendritic cells, myeloid suppressor cells, and Treg cells were determined by flow cytometry. A significant decrease in HLA-DR expression on monocytes, a decrease in the relative content of classical monocytes, myeloid and plasmacytoid dendritic cells, an increase in the percentage of intermediate monocytes and G-MLSC CD15+, an increase in the absolute content of Treg cells in patients with sepsis and septic shock were revealed. The revealed functional defects and shifts in the composition of the leukocyte population indicate the development of the stage of immunosuppression in patients with sepsis.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42944369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of antimicrobial metabolites of bacteria Bacillus amyloliquefaciens BIM B-1125 – the basis of Baсto-health biological preparation 解淀粉芽孢杆菌BIM B-1125的抗菌代谢物分析——生物制备的基础

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-321-329

K. Kantor, I. Proskurnina, N. Sverchkova, E. Kolomiets

引用次数: 0

Current and projected hydroclimatic changes in the Baltic and Arctic sea basins in the territories of Belarus and Russia 白俄罗斯和俄罗斯境内波罗的海和北极海盆地目前和预计的水文气候变化

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-338-347

V. Loginov, I. Danilovich, L. V. Kitaev, E. M. Akent’eva

{"title":"Current and projected hydroclimatic changes in the Baltic and Arctic sea basins in the territories of Belarus and Russia","authors":"V. Loginov, I. Danilovich, L. V. Kitaev, E. M. Akent’eva","doi":"10.29235/1561-8323-2022-66-3-338-347","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-3-338-347","url":null,"abstract":" The article presents an assessment of current changes in air temperature, precipitation, snow and river runoff in the Baltic and Arctic Seas basins in the territories of Belarus and Russia. It is shown that the observed positive air temperature trends during the winter season are associated with the sea level pressure distribution in the North Atlantic and NAO indices. In summer, the temperature growth is correlated strongly with the Atlantic multi-decadal oscillation. Changes in the precipitation regime are synchronized with an increase in the sea level pressure in the baroclinic active zones of the Atlantic Ocean, which led to the precipitation increase in Europe since the second half of the 20th century. Interdecadal precipitation fluctuations in the study region are associated with the dynamics of the circumpolar vortex and Arctic oscillation (AO) indices. In winter, a precipitation increase is observed in the negative AO phase and is caused by an increase in the frequency of southern cyclones. In summer, when the AO phase is negative, the cyclonic activity decreases, and the precipitation growth is associated with convective processes in the atmosphere. Snow precipitation and snow water equivalent are decreasing during recent decades due the air temperature significant growth. That led to the spring floods height decreasing in the region. In the next 30 years, a decrease in the winter air temperature in the Baltic Sea basin and its increase in the Arctic Sea are expected. In summer, the air temperature increase will slow down on the descending AMO branch in the coming decades. In the precipitation regime, the growth of seasonal and daily total precipitation is expected.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43773850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanically stimulated reactions in metal–oxide (carbide) systems 金属氧化物(碳化物)体系中的机械刺激反应

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-365-376

V. Zhornik, T. F. Grigoreva, S. Kovaliova, T. Y. Kiseleva, E. Devyatkina, S. Vosmerikov, I. S. Veremey, N. Lyakhov

{"title":"Mechanically stimulated reactions in metal–oxide (carbide) systems","authors":"V. Zhornik, T. F. Grigoreva, S. Kovaliova, T. Y. Kiseleva, E. Devyatkina, S. Vosmerikov, I. S. Veremey, N. Lyakhov","doi":"10.29235/1561-8323-2022-66-3-365-376","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-3-365-376","url":null,"abstract":"The processes of mechanochemical reduction of oxides of iron, nickel, and copper with aluminum with a stoichio metric ratio of components and in mixtures with a two-, three-, and four-fold excess of the aluminum content over the stoichiometric, as well as in the presence of an excess of oxide-forming metal and solid solutions of aluminum in iron and copper, were studied by the Mössbauer and IR spectroscopy, X-ray diffraction analysis, including the use of synchrotron radiation, and electron microscopy. The conditions for formation of metals modified with aluminum oxide (iron, nickel, copper) and their monoaluminides are determined. High aluminum content aluminides are formed at a three-fold excess of aluminum, and at a four-fold excess, a mechanochemical reduction of oxides does not occur. The preferred method for modifying metals with alumina is the mechanochemical reduction of oxides with a solid solution of aluminum in the oxideforming metal. Mechanochemical interaction in the high-energy Hf–C system in the presence of 20, 30, and 50 wt. % copper leads to the formation of hafnium carbide; and with an increase in the copper content, the crystallite size decreases.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42925407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Gravimetric analysis of tomato stems in the perception of a gravitational signal 用重力分析法分析番茄茎中感知到的重力信号

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-310-320

S. V. Sukhaveyeva, A. M. Kabachevskaya, I. Volotovski

引用次数: 1

Creating the рH-sensitive corrosion-inhibiting container structures based on the azole-intercalated molybdenum oxide particles with oligooxometalate shell 基于唑嵌入钼氧化物颗粒和低聚金属氧化物外壳的рH-敏感缓蚀容器结构

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-287-293

A. S. Logvinovich, T. V. Sviridova, E. Skorb, D. Sviridov, V. Agabekov

引用次数: 0

Study of the predominant types of the activity in sows under the on-farm conditions 猪场条件下母猪主要活性类型的研究

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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI Pub Date : 2022-07-01 DOI: 10.29235/1561-8323-2022-66-3-377-384

A. Solyanik, I. Sheiko, D. Khodosovsky, A. Khochenkov, A. Petrushko, I. Rudakovskaya, V. Bezmen, M. Jumkova

{"title":"Study of the predominant types of the activity in sows under the on-farm conditions","authors":"A. Solyanik, I. Sheiko, D. Khodosovsky, A. Khochenkov, A. Petrushko, I. Rudakovskaya, V. Bezmen, M. Jumkova","doi":"10.29235/1561-8323-2022-66-3-377-384","DOIUrl":"https://doi.org/10.29235/1561-8323-2022-66-3-377-384","url":null,"abstract":"A change in the external conditions leads to restructuring the adaptive behavior of animals, their motor activity, which makes it possible to use ethological properties to assess the body state in different production modes. In this regard, there is an urgent need for total monitoring of the health status and activity of pigs. The article contains the results on the effect of different-type stress on the pig stock during the rearing period under on-farm conditions. The studies were carried out at the pig farm of the State Enterprise “ZhodinoAgroPlemElita” in the groups of lactating sows kept under identical conditions, based on monitoring by year seasons in the following algorithm: complying with comfort criteria, reducing the stress impact, improving the health status, increasing the productivity. The predominant activity types of sows under on-farm conditions have been studied. It has been found that the predominance of the comfort activity among other types contributes to the offspring viability. Types of the activity of sows are inextricably linked to motivations, that is, the desire of animals to satisfy the priority needs of the body. Examples of high and low food motivation have been identified. Extra space, physical and visual barriers to protect more submissive sows have been found to have a positive effect on reducing overall aggression.","PeriodicalId":41825,"journal":{"name":"DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI","volume":null,"pages":null},"PeriodicalIF":0.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46433993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0