Some clinical and diagnostic features of patients with new-onset epilepsy in the presence of chronic cerebrovascular disease

Objective: to investigate the specific features of epilepsy that manifests itself in the presence of chronic cerebrovascular disease.Patients and methods. A total of 304 patients (a study group of 174 patients with new-onset seizures developing in the presence of cerebrovascular disease and a control group of 130 patients with cerebrovascular disease and no seizures) were examined. They underwent clinical neurological examination, electroencephalography (EEG), ultrasonic duplex scanning of extra- and intracranial arteries with functional tests, and visualization of brain structures.Results. Focal seizures were prevalent in the patients with cerebrovascular disease and epilepsy. It was found that there was a preponderance of left-sided localization of EEG foci of abnormal activity and a tendency to more commonly detect subcritical and critical stenoses in the left carotid bed in the patients with epileptic seizures. Diminished perfusion reserves in the posterior circulation system were more frequently observed in the patients with seizures in the presence of cardiovascular diseases. Moreover, the patients with seizures displayed a more profound degree of brain ischemia with the frequent cortical and subcortical localization of dyscirculatory foci. Thus, a study of perfusion reserves, localization of vascular foci, and degree of occlusive changes in the wall of brachiocephalic vessels allows identification of risk factors for epilepsy in the patients with cerebrovascular disease and promotes the prediction of the course of the disease

SOME FEATURES OF CHEMICAL ELEMENT ACCUMULATION IN PLANTS

When young sterlet is suffering from tympanism, biochemical and pathophysiological disorders are observed; the activity of malate dehydrogenase and succinate dehydrogenase lowers in the fish liver and muscles, while the activity of lactate dehydrogenase in-creases. Such disorders are accompanied by changes in the level and balance of ω-3 and ω-6 fatty acids towards decrease in ω-3 fatty acids

A model for optimizing the structure of teaching techniques for distance learning in the russian higher education system

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This study aims to develop a methodical approach to optimize the structure of teaching techniques and approaches to distance education, as exemplified by Russian universities, to enhance students’ professional competencies. A pedagogical experiment was conducted with the participation of 746 second to fourth year students majoring in engineering at the Ural Federal University in Russia. The coefficients for the relative importance of professional competencies were obtained through expert assessment. The number of experts was 40 faculty members with teaching experience of more than five years. The pedagogical experiment revealed the regularities of the influence of the forms of distance learning on the formation of students’ professional competency levels. The values of students’ developmental competency levels have been determined. Non-linear regression models have been developed based on the values of the integral level of professional competencies and the percentage of distance-learning forms in the number of instructional hours. The proposed methodological approach will be useful for university professors and teachers in identifying the most effective forms of distance learning and in differentiating teaching methods not only in the context of the general pandemic but also in the natural conditions of the educational process