Relativistic magnetron of 8 mm waveband

The first experimental study of relativistic magnetron of 8 mm wavelength with diffraction microwave output has been produced. Data that compare experiment and simulation are considered.Проведено перші експериментальні дослідження релятивістського 8 мм магнетрону з дифракційним виводом мікрохвильового сигналу. Запроваджено порівняння даних експерименту та чисельної моделі. Попередні дослідження РМ вказали існування генерації у діапазоні 8 мм. Експериментальні дані збігаються з розрахунковими значеннями для фокусуючого магнітного поля та енергії електронів, відповідно умовам збудження коливань π/2-виду при довжині хвилі 8,4 мм, а також з результатами чисельного моделювання. Змінення потужності 8 мм випромінювання дозволили зробити оцінку ККД РМ біля 0,4%.Проведены первые экспериментальные исследования релятивистского 8 мм магнетрона с дифракционным выводом микроволнового сигнала. Приводится сравнение данных эксперимента и численной модели. Предварительные исследования РМ показали наличие генерации в диапазоне 8 мм. Экспериментальные данные совпадают с расчетными значениями для фокусирующего магнитного поля и энергии электронов, соответствующими условию возбуждения колебаний π/2-вида при длине волны 8.4 мм, а также с результатами численного 3D-моделирования. Измерение мощности 8 мм излучения позволило оценить КПД РМ около 0.4%

CLINICAL SIGNS AND PATHOMORPHOLOGICAL PICTURE OF HYPOXIC INTRAVENTRICULAR HEMORRHAGE IN NEWBORNS

(Voprosy sovremennoi pediatrii — Current Pediatrics. 2009;8(2):124-125)<br /

Post-COVID syndrome in children and adolescents: a literature review and clinical case

L.A. Balykova, M.V. Shirmankina, D.O. Vladimirov, E.I. Naumenko, E.S. Samoshkina, R.A. Chernyshova N.P. Ogarev Mordovia State University, Saransk, Russian Federation Post-COVID-19 syndrome is an important challenge for modern medicine, requiring the involvement of different health professionals. This multidisciplinary approach is underpinned by the variety of clinical manifestations and the need for comprehensive rehabilitation of patients, including children and adolescents. The review highlights clinical manifestations of post-COVID-19 syndrome. Currently, a symptom management approach has been established for improving post-COVID-19 conditions. Also, appropriate lifestyle changes, such as adequate rest and sleep hygiene, may be useful. Rehabilitation interventions for post-COVID-19 syndrome may include physiotherapy exercises and various psychotherapy techniques. Since mitochondrial dysfunction, energy supply deficit, oxidative stress, endothelial dysfunction, and immune dysregulation profoundly impact the pathogenesis of post-COVID-19 syndrome, the use of L-carnitine which plays a crucial role in energy production, is consider ed as a promising method in the management of such patients. L-carnitine may have cardioprotective, anabolic and neuroprotective effects. The authors present a case report of post-COVID-19 condition in their own patient, a 4-year-old boy who survived multisystem inflammatory syndrome. As a result of combination therapy, including L-carnitine, the patient’s sense of well-being significantly improved: he had no complaints, the muscle weakness and asthenization became less pronounced, and his spirits rose. The described clinical case illustrated the effectiveness of using L-carnitine in the combined therapy of post-COVID-19 syndrome in children. Keywords: COVID-19, post-COVID syndrome, multisystem inflammatory syndrome, L-carnitine, children, rehabilitation, asthenization, anxiety disorder. For citation: Balykova L.A., Shirmankina M.V., Vladimirov D.O. et al. Post-COVID syndrome in children and adolescents: a literature review and clinical case. Russian Journal of Woman and Child Health. 2022;5(4):366–372 (in Russ.). DOI: 10.32364/2618-8430-2022-5-4-366-372. <br

E-Resources for Technological Support of Foreign Student Independent Work in University Educational Process

The relevance of the study is due to the search for promising directions of foreign student independent work organization, due of transformation trends of the University educational process, the key link of which are electronic resources: interactive computer technologies that activate all activities of the student and accelerate the process of educational information assimilation; computer simulators that contribute to the acquisition of practical skills; interactive testing systems that control the quality of knowledge. The availability and functionality of mobile electronic devices (Internet tablets, netbooks, readers, multimedia projectors, and interactive whiteboards), information and communication applications and programs, the emergence of new devices and equipment also contribute to the effective updating of foreign student independent work in the University educational process. In this regard, the main attention is paid to the substantiation of the theoretical and methodical approach to the use of electronic resources for technological support of the innovative model of a foreign student's independent work in the University educational process. To substantiate the theoretical and practical significance of the implementation of electronic resources for technological support of independent work, the method of pedagogical monitoring was used, with the help of which continuous monitoring of independent work organization was carried out and operational correction of emerging problems was carried out. The article establishes the classification of types and kinds of electronic resources for technological support of a foreign student's independent work in the University educational process; the algorithm of multimedia components' implementation of electronic resources for technological support of a foreign student's independent work. Based on the results of the study, the priority of electronic resources for technological support of a foreign student's independent work is justified and the effectiveness of their implementation is proved