The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A mathematical model has been constructed that jointly describes the nitrogen and sulfur cycles under aerobic-anaerobic conditions with reference to the Black Sea redox zone. Semiempirical functions of the dependence of the rates of transformation of the sulfur and nitrogen compounds on the oxygen content was used. The calculations were based on a transport equation for an unconservative substance...