Legal aspects of interests child in distance learning

В статье рассматриваются правовые аспекты соблюдения интересов ребенка при дистанционном обучении в Российской Федерации, основные правовые акты данной сферы, особенности организации дистанционного обучения в период пандемии и после нее.The article discusses the legal aspects of observing the interests of the child in distance learning in the Russian Federation, the main legal acts in this area, the features of the organization of distance learning during the pandemic and after it

PHYSICAL ACTIVITY AS A METHOD FOR PREVENTION OF SENIOR DEMENTIA

This article discusses the possibilities of preventing senile dementia through physical education and sports, as well as various studies on this issue.В данной статье рассматриваются возможности профилактики старческой деменция с помощью физической культуры и спорта, а также различные исследования по данному вопросу

Comparison of Mathematical Methods for Compensating a Current Signal Under Current Transformers Saturation Conditions

Current measurements from electromagnetic current transformers are essential for the construction of secondary circuit systems, including for protection systems. Magnetic core of these transformers are at risk of saturation, as a result of which maloperation of protection algorithms can possibly occur. The paper considers methods for recovering a current signal in the saturation mode of current transformers. The advantages and disadvantages of methods for detecting the occurrence of current transformers core saturation are described. A comparative analysis of mathematical methods for recovering a current signal is given, their approbation was carried out, and the most promising of them was revealed. The stability and sensitivity of recovery methods were tested by adding white noise to the measured signal and taking into account the initial flux density (remanent magnetization) in the current transformers core. Their comparison is given on the basis of angular, magnitude, and total errors at a given simulation interval. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Funding: This work was supported in part by the International Cooperation Project of National Natural Science Foundation of China under Grant 41761144079, in part by the Strategic Priority Research Program of the Chinese Academy of Sciences, in part by the Pan-Third Pole Environment Study for a Green Silk Road under Grant XDA20060303, in part by the K. C.Wong Education Foundation under Grant GJTD-2020-14, in part by the CAS PIFI Fellowship under Grant 2021PC0002, in part by the Xinjiang Tianchi Hundred Talents Program under Grant Y848041, in part by the CAS Interdisciplinary Innovation Team under Grant JCTD-2019-20, in part by the project of the Research Center of Ecology and Environment in Central Asia under Grant Y934031, and in part by the Regional Collaborative Innovation Project of Xinjiang Uygur Autonomous Regions under Grant 2020E01010

EDUCATIONAL LABORATORY DEVICE FOR SCIENTIFIC AND EDUCATIONAL PROJECTS

The work deal with the development of the educational laboratory device for the partici-pants of the scientific-practical conference and the tournament of young physicists. The tem-perature, pressure, light sensitivity and acceleration measurements, and external devices con-trolling, such as 5-V logic.Особая благодарность Огородникову Игорю Николаевичу (УрФУ кафедра ЭФ), за помощь в разработке плана проекта

Шкала GRACE 2.0 для прогнозирования течения острого коронарного синдрома: какой из маркеров повреждения миокарда использовать?

Aim. To compare the effectiveness of various markers of myocardial injury (creatine phosphokinase MB-fraction (CK-MB), cardiac troponin I, measured by standard and high sensitivity methods (cTnI and hs-TnI), and heart-type fatty acids binding protein (H-FABP)) in predicting the ACS course using the GRACE 2.0 score.Methods. 183 patients with a verified diagnosis of ACS were included in the study. The levels of CK-MB, cTnl, hs-Tnl and H-FABP were measured at admission. Qualitative assessment of H-FABP was performed by immunochromatographic express-tests “CARD-INFO” and “CardioFABP”. Risk assessment of death in the in-hospital period and within the 12-months follow-up period, as well as death and/or acute myocardial infarction (AMI) within the 12-months follow-up was estimated using the GRACE 2.0 score with alternate inclusion of the various cardiomarkers. The effectiveness of the resultant prognostic scales was evaluated using the ROC-analysis and comparison of the areas under the curve (AUC).Results. 114 patients (62.3%) were diagnosed with AMI and 69 (37.7%) with unstable angina. 10 patients (5.5%) died during the indexed hospitalization. Four patients died within the follow-up and 8 patients (4.4%) had Ami. 94 patients (51.3%) had elevated hs-Tnl levels at admission, 90 patients (49.2%) - cTnl, 45 patients (24.6%) - CK-MB. H-FABP levels were elevated in 70 (38.3%). The express-test “CARD-INFO” was positive in 86 patients (47.0%), the “CardioFABP” - in 125 (68.3%). There were no significant differences found between the stratification of ACS patients by the GRACE 2.0 score into high and non-high risk groups in terms of complications (p<0.05). Similarly, there were no significant differences found between the AUC values of the cardiomarkers in terms of developing the endpoints using the GRACE 2.0 score (p<0.05).Conclusion. The introduction of H-FABP in the GRACE 2.0 scale is non-inferior to traditional markers of myocardial damage and may be used to stratify risk in patients with ACS.Цель. Сравнить эффективность прогнозирования течения острого коронарного синдрома (ОКС) с помощью шкалы GRACE 2.0 при включении в нее результатов определения различных маркеров повреждения миокарда (МВ-фрак-ции креатинфосфокиназы (МВ-КФК), сердечного тропонина I, определенного методами стандартной и высокой чувствительности (сТн I и вчТн I), и сердечного белка, связывающего жирные кислоты (сБСЖК)).Материалы и методы. В исследование включены 183 пациента с верифицированным диагнозом «ОКС». Больным при поступлении проводилось количественное определение уровня МВ-КФК, сТн I, вчТн I и сБСЖК, а также качественная оценка содержания сБСЖК с помощью иммунохроматографических экспресс-тестов «КАРД-ИНФО» и «КардиоБСЖК». Оценку риска летального исхода в стационаре и в течение 12 месяцев наблюдения, а также летального исхода и/или развития острого инфаркта миокарда (ОИМ) в течение 12 месяцев, выполняли с помощью шкалы GRACE 2.0 с поочередным использованием результатов определения различных кардиомаркеров. Эффективность полученных прогностических шкал оценивали с помощью ROC-анализа и сопоставления показателей площади под кривой (AUC).Результаты. У 114 больных (62,3%) диагностирован ОИМ, у 69 (37,7%) - нестабильная стенокардия. В течение госпитализации умерли 10 пациентов (5,5%), в течение последующего наблюдения произошло еще 4 летальных исхода и 8 случаев (4,4%) развития ОИМ. Уровень вчТн I при поступлении был повышен у 94 пациентов (51,3%), сТн I - у 90 (49,2%), МВ-КФК - у 45 (24,6%), сБСЖК, определенного количественным методом, - у 70 (38,3%). Экспресс-тест «КАРД-ИНФО» был положительным у 86 пациентов (47,0%), «КардиоБ-СЖК» - у 125 (68,3%). Результаты распределения больных ОКС на группы высокого и невысокого риска развития осложнений по шкале GRACE 2.0 в течение госпитализации и 12 мес. при использовании различных маркеров значимо не различались (p<0,05). При сравнении показателей AUC изучавшихся кардиомаркеров в отношении развития всех конечных точек с помощью шкалы GRACE 2.0 достоверных различий также не выявлено (p<0,05).Заключение. Включение в шкалу GRACE 2.0 сБСЖК по эффективности прогнозирования течения ОКС не уступает традиционным маркерам повреждения миокарда и может применяться, наряду с ними, для стратификации риска у больных ОКС

Electron-hole asymmetry in two-terminal graphene devices

A theoretical model is proposed to describe asymmetric gate-voltage dependence of conductance and noise in two-terminal ballistic graphene devices. The model is analyzed independently within the self-consistent Hartree and Thomas-Fermi approximations. Our results justify the prominent role of metal contacts in recent experiments with suspended graphene flakes. The contact-induced electrostatic potentials in graphene demonstrate a power-law decay with the exponent varying from -1 to -0.5. Within our model we explain electron-hole asymmetry and strong Fabri-Perot oscillations of the conductance and noise at positive doping, which were observed in many experiments with submicrometer samples. Limitations of the Thomas-Fermi approximation in a vicinity of the Dirac point are discussed.Comment: 7 pages, 8 figure

Research of Smoldering of Tobacco Products

Наибольшее количество пожаров происходит в жилом секторе. Одной из распространенных причин этих пожаров является неосторожное обращения с тлеющими табачными изделиями. Сигареты марки Winston пользуются наибольшим спросом пользуются в России. Определены температура и средняя скорость тления сигарет марки Winston XS. Найдено, что определенные значения скорости тления согласуется с результатами, полученными по методу ГОСТ ИСО 12863–2013.The greatest number of fires occur in the residential sector. One of the common causes of these fires is the careless handling of smoldering tobacco products. Winston brand cigarettes are most in demand in Russia. The temperature and average smoldering speed of Winston XS cigarettes are determined. It was found that certain values of the speed of smoldering are consistent with the results obtained by the method of GOST ISO 12863–2013