Analysis of the training process of canoists teams of the Republic of Belarus

В статье сделан анализ тренировочных средств в годичном тренировочном цикле гребцов на каноэ национальной команды Республики Беларусь. Рассмотрены стороны подготовки гребцов в различных зонах интенсивности при подготовке к соревновательной дистанции 500 метров.The article analyzes the training facilities in the annual training cycle of canoe rowers of the national team of the Republic of Belarus. The sides of the training of rowers in different areas of intensity in preparation for the competitive distance of 500 meters are considered

Phase diagrams of classical spin fluids: the influence of an external magnetic field on the liquid-gas transition

The influence of an external magnetic field on the liquid-gas phase transition in Ising, XY, and Heisenberg spin fluid models is studied using a modified mean field theory and Gibbs ensemble Monte Carlo simulations. It is demonstrated that the theory is able to reproduce quantitatively all characteristic features of the field dependence of the critical temperature T_c(H) for all the three models. These features include a monotonic decrease of T_c with rising H in the case of the Ising fluid as well as a more complicated nonmonotonic behavior for the XY and Heisenberg models. The nonmonotonicity consists in a decrease of T_c with increasing H at weak external fields, an increase of T_c with rising H in the strong field regime, and the existence of a minimum in T_c(H) at intermediate values of H. Analytical expressions for T_c(H) in the large field limit are presented as well. The magnetic para-ferro phase transition is also considered in simulations and described within the mean field theory.Comment: 14 pages, 12 figures (to be submitted to Phys. Rev. E

Системное моделирование и прогноз состояния окружающей среды города Киева на основе статистических данных космического геомониторинга и наземных наблюдений

Обґрунтовано можливість використання моделі системної динаміки розвитку міста Форрестера-Грехема для оцінки стану довкілля міста Києва. Розроблено модифіковану імітаційну модель, яка включає в себе можливості асиміляції космічної інформації дистанційного зондування Землі та відображає динаміку змін структури складових урболандшафта та деяких еколого-соціальних факторів, а саме: території під житловою забудовою, дороги, загальну площу рослинного покриву, пустирі та будівельні майданчики, чисельність промислово-торгівельних підприємств, емісію парникових газів, площу водного дзеркала, щільність забудови, чисельність населення. На її основі було визначено інтегральну оцінку екологічного стану міста Києва за період з 1994 по 2013 рік та дано прогноз до 2025 року. Отриману модель можна використовувати як наукову основу під час обґрунтування й формування методик для комплексного оцінювання стану довкілля міських територій з використанням космічної інформації дистанційного зондування Землі.It was shown that the Forrester-Graham urban dynamics model could be used to evaluate the environment of the city of Kiev. The modified simulation model was developed which included the ability to incorporate the Earth remote sensing information and displayed the change dynamics of the urban landscape structure and some eco-social factors, namely: residential buildings areas, roads, the total area of vegetation, unused land and construction sites, the number of industrial and commercial enterprises, greenhouse gases emissions, the area covered with water, the building density, population. Based on this model, the integrated evaluation was made of the environment of the city of Kiev during 1994 – 2013 and the forecast until 2025 was given. The model can be used as a scientific basis for substantiation and formation of techniques for complex environmental assessment of urban areas using the Earth remote sensing information.Обоснована возможность использования модели системной динамики развития города Форрестера-Грехема для оценки состояния окружающей среды города Киева. Разработана модифицированная имитационная модель, которая включает в себя возможности ассимиляции космической информации ДЗЗ и отображает динамику изменений структуры составляющих урболандшафта и некоторых эколого-социальных факторов, а именно: территории под жилой застройкой, дороги, общую площадь растительного покрова, пустыри и строительные площадки, численность промышленно-торговых предприятий, эмиссию парниковых газов, площадь водного зеркала, плотность застройки, численность населения. На ее основе была определена интегральная оценка экологического состояния города Киева за период с 1994 по 2013 г. и дан прогноз до 2025 года. Полученная модель может быть использована как научная основа при обосновании и формировании методик для комплексной оценки состояния окружающей среды городских территорий с использованием космической информации дистанционного зондирования Земли

Ferromagnetic phase transition in a Heisenberg fluid: Monte Carlo simulations and Fisher corrections to scaling

The magnetic phase transition in a Heisenberg fluid is studied by means of the finite size scaling (FSS) technique. We find that even for larger systems, considered in an ensemble with fixed density, the critical exponents show deviations from the expected lattice values similar to those obtained previously. This puzzle is clarified by proving the importance of the leading correction to the scaling that appears due to Fisher renormalization with the critical exponent equal to the absolute value of the specific heat exponent $\alpha$. The appearance of such new corrections to scaling is a general feature of systems with constraints.Comment: 12 pages, 2 figures; submitted to Phys. Rev. Let

Akkermansia muciniphila and improved metabolic health during a dietary intervention in obesity: relationship with gut microbiome richness and ecology

Objective: Individuals with obesity and type 2 diabetes differ from lean and healthy individuals in their abundance of certain gut microbial species and microbial gene richness. Abundance of Akkermansia muciniphila, a mucin-degrading bacterium, has been inversely associated with bodyfat mass and glucose intolerance in mice, but more evidence is needed in humans. The impact of diet and weight loss on this bacterial species is unknown. Our objective was to evaluate the association between fecal A. muciniphila abundance, fecal microbiome gene richness, diet, host characteristics, and their changes after calorie restriction (CR). Design: The intervention consisted of a 6-week CR period followed by a 6-week weight stabilization (WS) diet in overweight and obese adults (N=49, including 41 women). Fecal A. muciniphila abundance, fecal microbial gene richness, diet and bioclinical parameters were measured at baseline and after CR and WS. Results: At baseline A. muciniphila was inversely related to fasting glucose, waist-to-hip ratio, and subcutaneous adipocyte diameter. Subjects with higher gene richness and A. muciniphila abundance exhibited the healthiest metabolic status, particularly in fasting plasma glucose, plasma triglycerides and body fat distribution. Individuals with higher baseline A. muciniphila displayed greater improvement in insulin sensitivity markers and other clinical parameters after CR. A. muciniphila was associated with microbial species known to be related to health. Conclusion: A. muciniphila is associated with a healthier metabolic status and better clinicaloutcomes after CR in overweight/obese adults, however the interaction between gut microbiota ecology and A. muciniphila has to be taken into account

Vaccine antigens modulate the innate response of monocytes to Al(OH)3.

Aluminum-based adjuvants have widely been used in human vaccines since 1926. In the absence of antigens, aluminum-based adjuvants can initiate the inflammatory preparedness of innate cells, yet the impact of antigens on this response has not been investigated so far. In this study, we address the modulating effect of vaccine antigens on the monocyte-derived innate response by comparing processes initiated by Al(OH)3 and by Infanrix, an Al(OH)3-adjuvanted trivalent combination vaccine (DTaP), containing diphtheria toxoid (D), tetanus toxoid (T) and acellular pertussis (aP) vaccine antigens. A systems-wide analysis of stimulated monocytes was performed in which full proteome analysis was combined with targeted transcriptome analysis and cytokine analysis. This comprehensive study revealed four major differences in the monocyte response, between plain Al(OH)3 and DTaP stimulation conditions: (I) DTaP increased the anti-inflammatory cytokine IL-10, whereas Al(OH)3 did not; (II) Al(OH)3 increased the gene expression of IFNγ, IL-2 and IL-17a in contrast to the limited induction or even downregulation by DTaP; (III) increased expression of type I interferons-induced proteins was not observed upon DTaP stimulation, but was observed upon Al(OH)3 stimulation; (IV) opposing regulation of protein localization pathways was observed for Al(OH)3 and DTaP stimulation, related to the induction of exocytosis by Al(OH)3 alone. This study highlights that vaccine antigens can antagonize Al(OH)3-induced programming of the innate immune responses at the monocyte level

Кинетика восстановления железа при восстановительной плавке рудоугольных окатышей

Исследовано влияние интенсивности теплообмена на кинетику восстановления железа в процессе плавки рудоугольных окатышей. Показано, что с ростом интенсивности теплообмена повышается скорость восстановительных процессов. Вследствие роста коэффициента теплообмена увеличивается глубина восстановленного слоя окатыша, существенно изменяются его структура и химический состав образующейся металлической фазы.Досліджено вплив інтенсивності теплообміну на кінетику відновлення заліза в процесі плавки рудовугільних окатишів. Показано, що при зростанні інтенсивності теплообміну підвищується швидкість відновлювальних процесів. Внаслідок зростання коефіцієнту теплообміну збільшується глибина відновленого шару окатиша, суттєво змінюються його структура та хімічний склад металевої фази, що утворюється.Influence of intensity of heat exchange is investigational on kinetics reduction of iron in the process of melting ore-coal pellets. It is rotined that speed of reduction processes rises with growth of intensity of heat exchange. Because of growth of coefficient of heat exchange the depth of the recovered layer of pellet is increased, his structure and chemical composition of appearing metallic phase changes substantially