In this paper we present an example of non-regular extremal Volterra quadratic stochastic operator defined on infinite-dimensional simplex. We show that the construction of this operator to odd dimensional face of infinite-dimensional simplex is non-regular transformation. We employ method of approximation to prove non-regularity of initial operato

The occurrence of resistance to anticancer and the emergence of serious side effects due to chemotherapy is one of the main problems in cancer treatment, including breast cancer. The need for effective anticancer with a specific target is urgently required. Streptomyces are widely known as the potential producers of new anticancer molecules. Previo

Airflow from a convergent nozzle at sonic Mach number expanded suddenly into a circular duct of larger cross-sectional area, provided with annular rectangular cavities, which was studied numerically, focusing attention on the base pressure, and the flow development in the enlarged duct. It was found that the base pressure is strongly influenced by