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The relevance of our study is due to the unresolved problem of atherosclerosis, a disease that causes a greatest many disabilities and deaths. A definite value in its initiation, progression, and destabilization is assigned to endothelial cells, which are prone to pathological effects of various factors. In patients with atherosclerosis, it is impossible to obtain endothelial cells in vivo and in...
The article uses the analytical equation for the work function of metals, made by one of the authors, to study the structure of aluminum alloys, which are increasingly used in the shipbuilding industry. For example, of selected alloys Al-Cu, Al-Ta and Al-Ti are presented graphically changes in work function depending on the percentage composition of the alloy. Also presented an equation that allows...
The authors analyze the methods of effective teaching of physics in the context of an increasingly weak preparation of students from the high school. They draw attention to the opportunities that in this field can offer new multimedia technologies, especially computers, applied to various forms of physical classes. The analysis is based on many years of experience in working with students of different...
An algorithm of reconstruction nonlinear motion equations of machine tool supporting system dynamic models, on the basis of incomplete information about an object is presented in this paper. This information is obtained from experimental tests in the form of time response characteristics of an object to a given excitation. Tested models are developed in the rigid finite elements method convention...
The paper presents an algorithm of reconstruction nonlinear motion equations of dynamic models of machine tool supporting systems, on the basis of experimentally determined time response characteristics of an object to a given excitation. These models are constructed in the rigid finite elements method convention supplemented by slideway joint modeling option. Reconstruction can be carried out on...
The article presents multi-component composite model of the sea surface which generalizes the standard two-scale model (small-scale gravity-capillary waves lying on the large-scale gravity waves). The suggested model considers the non-resonant backscatter from large-scale breaking gravity waves and resonant backscatter from the steep wavelets of meso-scale spectrum (meso-waves). The multi-component...
Przedstawione zostały algorytmy rozwiązywania odwrotnych problemów dynamiki nieliniowej tj. algorytmy ustalania struktury i parametrów modeli układów nieliniowych na podstawie przebiegów czasowych wyznaczonych doświadczalnie. Algorytmy te polegają na dopasowaniu modelu (równań różniczkowych) określonej struktury do doświadczalnie wyznaczonych sygnałów na podstawie kryterium najmniejszej sumy kwadratów...
Wychodząc z równań Maxwella, opisujących zachowanie się fal elektromagnetycznych w ośrodku dielektrycznym, dokonano modyfikacji ich zapisu celem uzyskania równania umożliwiającego opis zjawisk optycznych w formie mierzalnej, wyrażonej przez natężenie światła. Wskazano na różne formy oddziaływania wiązki światła ze zbiorem cząstek materialnych. Przyjęto, opierając się na teorii Rayleigha, że pomiar...
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