The role of adaptive physical culture in the system of higher professional education

New stages of modern society, affected all of our lives, cultural, social, economic, political. And in the education system introduced more and more new branches of information concerning not only its level but also the qualityНовые этапы современного общества, затрагивают все группы нашей жизни, культурные, социальные, экономические, политические. Так и в системе образования вводят все более новые информационные ветви, касающиеся не только его уровня, но и качеств

THE ASSESSMENT OF CLIMATE CHANGE AND WATERSHED EFFECT ON THE HETEROTROPHIC METABOLISM IN THE LAKE ONEGO ECOSYSTEM

Lake Onego, as one of the largest water bodies in a humid zone, is the recipient of terrestrial carbon and plays an important role in the global balance of this element. Due to heterotrophic metabolism in the Lake Onego ecosystem, substantial emissions of carbon dioxide from this lake into the atmosphere can be assumed. However, the extent of this phenomenon is still poorly known. As a climate change has led to an increase in water and organic matter flow into the northern water bodies, the carbon balance study of aquatic ecosystems is of particular relevance. The elements of the water balance for the Lake Onego catchment area in the current climate conditions are assessed. Based on satellite images the model of Lake Onego watershed terrestrial ecosystems is used to simulate the flow of organic matter into the lake with different types of vegetation and topography consideration. The assessment of the benthic communities habitat is carried out taking into account the accumulation of organic matter in various parts of Lake Onego

Study of nodulation and nitrogen fixation in two cowpea [Vigna unguiculata (L.) Walp.] cultivars inoculated with different strains of Bradyrhizobium sp.

Cowpea (Vigna unguiculata L. Walp.) is a vegetable legume with promise for agricultural production in Russia. The impact of inoculation with three strains of Bradyrhizobium sp. from the All Russian Institute of Agricultural Microbiology (St. Petersburg) on nodulation and nitrogen fixation on two cowpea cultivars, Sibirskiy razmer and Yunnanskaya, has been explored All the strains used made both cultivars produce nitrogen fixing nodules. Differences between the varieties in the ability to form nodules and fix nitrogen following exposure to the different strains have been identified. High variation of the nodulation ability of both cultivars has been observed: at the beginning of flowering, the number of nodules per plant was 4–47 in Sibirskiy razmer and 17–117 in Yunnanskaya. Uninoculated vigna roots used as the control did not form nodules. At the beginning of flowering (48 days after inoculation) Sibirskiy razmer plants inoculated with strain 164 0503 (03) had the highest nodule weight per plant (0.79 g) and N2 fixation rates (5155.3 nmol С2H4/plant/h). The corresponding measures in Yunnanskaya were 1.41 g and 5255.5 nmol С2H4/plant/h following exposure to strain 162 0501 (01) and 4673.0 nmol С2H4/plant/h following exposure to strain (03). Analysis showed a correlation between nitrogen fixation rate and nodule weight (pcs./plant), r = 0.78 (p > 0.95). Data obtained suggest that effective symbioses are achieved between Sibirskiy razmer and strain 03 as well as between Yunnanskaya and strain 01

Cardiac arrhythmias in patients with bronchial asthma

Introduction. According to modern data, bronchial asthma (BA) is an independent risk factor for the development of cardiac arrhythmias (CA), and the use of long-acting β2-agonists (LABA) in basic therapy may further increase the risks of CA.Aim. To study the structure and risk factors of cardiac arrhythmias in patients with bronchial asthma. Materials and methods. A retrospective study included 181 patients aged 69.4 ± 0.8 years, hospitalized for asthma, with the presence a CA in medical documentation.Results. Among BA patients with CA, supraventricular CA were found in 71.3% (129) patients, ventricular CA in 16.6% (30), combined CA in 12.2% (22). In 52.5% (95) patients, supraventricular extrasystole was detected, in 35.9% (65) – atrial fibrillation, in 28.7% (52) – ventricular extrasystole, in 1.1% (2) – paroxysmal supraventricular tachycardia, in 0.6% (1) – paroxysmal ventricular tachycardia. It was found that supraventricular CA was significantly more frequent among women (χ2 = 5.974, p = 0.05). The severity of BA and the level of control are not related to the type of observed CA (χ2 = 0.755, p = 0.685 and χ2 = 3.003, p = 0.557, respectively).Discussion. The use of a combination of ICS and LABA in basic BA therapy versus the use of ICS alone does not have a significant effect on the frequency and structure of cardiac arrhythmias (χ2 = 1.172, p = 0.556).Conclusion. In hospitalized BA patients, supraventricular cardiac arrhythmias are most often detected, among which supraventricular extrasystole and atrial fibrillation take the main place

Моделирование случайных процессов, обусловленных профилем опорной поверхности транспортно-технологических средств

The research article demonstrates that agricultural transport and technological systems are susceptible to external random influences during their operation. By accurately describing and modeling these effects, the performance of the tool can be enhanced during the research and design stages. (Research purpose) The objective of this research is to generate random processes with predefined correlation functions that simulate the profile of the supporting surface under the wheels of agricultural transport and technological systems during operations. Additionally, the study aims to visually represent the resulting random implementations of the support surface profile height. (Materials and methods) The proposed approach considers the variation in support surface profile height along the trajectory of agricultural transport and technological systems, while maintaining a constant speed, as a stationary random process. The selection of the correlation function type and its parameters is dependent on the specific characteristics of the support surface. Subsequently, using the Matlab environment, the model for the support surface profile height under the wheels is developed. (Results and discussion) Successful implementations of support surface profile height have been achieved for two distinct scenarios: asphalt and wheat stubble. A comparative analysis is conducted between the correlation function of the simulated implementation of the random process and the original correlation function. (Conclusions) The proposed algorithm has demonstrated its capability to generate a random process with specified correlation function properties, accurately describing the height fluctuations of the support surface profile under the wheels of agricultural transport and technological systems. The adequacy of the algorithm has been confirmed through a comprehensive analysis of at least 50 implementations, highlighting its effectiveness and reliability.Показали, что сельскохозяйственные транспортно-технологические средства в процессе выполнения работ подвергаются внешним случайным воздействиям. Описание и моделирование этих воздействий позволит улучшить эксплуатационные показатели средства на этапах исследования и проектирования. (Цель исследования) Формирование случайных процессов с заданными корреляционными функциями, обусловленных профилем опорной поверхности под колесами транспортно-технологического средства при выполнении операций; визуализация полученных случайных реализаций высоты профиля опорной поверхности. (Материалы и методы) Изменение высоты профиля опорной поверхности вдоль траектории движения транспортно-технологического средства при постоянной скорости предложено рассматривать как стационарный случайный процесс. В зависимости от типа опорной поверхности выбираются вид и параметры корреляционной функции. Далее в среде Matlab осуществляется моделирование высоты профиля опорной поверхности под колесами. (Результаты и обсуждение) Получены реализации высоты профиля опорной поверхности в виде асфальта и стерни пшеницы. Проведено сравнение корреляционной функции смоделированной реализации случайного процесса с исходной корреляционной функцией. (Выводы) Установили, что предложенный алгоритм позволяет получить случайный процесс с заданными свойствами корреляционной функции для описания колебаний высоты профиля опорной поверхности под колесами транспортно-технологического средства с достаточно высокой степенью адекватности, используя массив реализаций в количестве не менее 50

Новая классификация поясно-конечностной мышечной дистрофии

A new classification of limb‑girdle muscular dystrophy, which was adopted in 2018, is given. The reasons why there was a need to revise the classification are indicated. A new definition of this pathology is given. The diseases that were excluded from the new classification of limb‑girdle muscular dystrophy due to inconsistency with the new definition of this form of pathology are given. A comparison of the new and old classification of this group of muscular dystrophies is given. The genes responsible for the development of various forms of this pathology are indicated, as well as proteins of striated musculature, the synthesis of which is disrupted. It has been shown that a mutation in one gene can lead to different types of inheritance of limb‑girdle muscular dystrophy, which is important to take into account when conducting prenatal diagnostics. The new classification will allow introducing new forms of this pathology as new mutations in disease genes are detected.Приводится новая классификация поясно‑конечностной мышечной дистрофии, принятой в 2018 г. Рассмотрены причины, по которым возникла необходимость пересмотра классификации, дается новое определение этой патологии. Приводятся заболевания, которые были исключены из новой классификации поясно‑конечностных мышечных дистрофий из‑за несоответствия новому определению этой формы патологии. Представлено сопоставление мышечных дистрофий в соответствии с новой и старой классификациями. Указаны гены, ответственные за развитие различных форм этой патологии, а также белки поперечно‑полосатой мускулатуры, синтез которых нарушается. Показано, что мутация в одном гене может приводить к разным типам наследования поясно‑конечностных мышечных дистрофий, что важно учитывать при проведении пренатальной диагностики. Пересмотренная классификация позволит вводить новые формы первично‑мышечной патологии по мере выявления новых мутаций в генах, ответственных за эти заболевания

CUTANEOUS MANIFESTATIONS OF ANGIOIMMUNOBLASTIC T-CELL LYMPHOMA

Background: Angioimmunoblast T-cell lymphoma (AITL) is a rare T-cell lymphoproliferative disease that is accompanied by generalized lymphadenopathy, hepatosplenomegaly, intoxication symptoms and extranodal lesions. The extranodal manifestations of the disease frequently involve various skin changes. One of the first such manifestations is maculopapular rashes observed in about half of AITL patients and usually preceding the appearance of lymphadenopathy. Other forms of skin lesions accompany the disease considerably less frequently.Aim: To characterize the range of skin changes in patients suffering from AITL, to establish a correspondence between the nature of skin changes and their histological picture.Materials and methods: 54 AITL patients were being treated at the National Research Centre for Hematology from 2000 to 2017, with the male/female ratio being 30/24. The median age was 61 (29–81) years.Results: Changes in the skin were observed in 24 (44.4 %) of 54 AITL patients, out of whom 18 (75 %) and 6 (25 %) were male and female patients, respectively. Maculopapular rash was observed in 22 (91.7 %) out of 24 patients. The morphological and molecular investigations of skin biopsy specimens exhibiting maculopapular rash demonstrated nonspecific reactive changes. Patients with maculopapular rash demonstrated an increase in the level of total (polyclonal) IgE. Specific skin lesions detected in 8 (14.8 %) cases were represented by a ‘livedo reticularis’, focal skin hyperpigmentation, erythroderma, left eyelid tumour and tumour in 3, 2, 1, 1 and 1 cases, respectively.Conclusion: Maculopapular rash frequently observed in AITL patients is a reactive process not associated with a specific skin lesion. Specific skin lesions in AITL are much less common and can be represented by various forms. In some AITL cases, skin changes of the reactive and tumour nature can be simultaneously observed

The MHD nature of ionospheric wave packets excited by the solar terminator

We obtained the first experimental evidence for the magnetohydrodynamic (MHD) nature of ionospheric medium-scale travelling wave packets (MSTWP). We used data on total electron content (TEC) measurements obtained at the dense Japanese network GPS/GEONET (1220 stations) in 2008-2009. We found that the diurnal, seasonal and spectral MSTWP characteristics are specified by the solar terminator (ST) dynamics. MSTWPs are the chains of narrow-band TEC oscillations with single packet's duration of about 1-2 hours and oscillation periods of 10-20 minutes. Their total duration is about 4--6 hours. The MSTWP spatial structure is characterized by a high degree of anisotropy and coherence at the distance of more than 10 wavelengths. The MSTWP direction of travelling is characterized by a high directivity regardless of seasons. Occurrence rate of daytime MSTWPs is high in winter and during equinoxes. Occurrence rate of nighttime MSTIDs has its peak in summer. These features are consistent with previous MS travelling ionosphere disturbance (TID) statistics obtained from 630-nm airglow imaging observations in Japan. In winter, MSTWPs in the northern hemisphere are observed 3-4 hours after the morning ST passage. In summer, MSTWPs are detected 1.5-2 hours before the evening ST occurrence at the point of observations, at the moment of the evening ST passage in the magneto-conjugate point. Both the high Q-factor of oscillatory system and synchronization of MSTWP occurrence with the solar terminator passage at the point of observations and in the magneto-conjugate area testify the MHD nature of ST-excited MSTWP generation. The obtained results are the first experimental evidence for the hypothesis of the ST-generated ion sound waves.Comment: 12 pages, 3 figure