**5. Conclusions**


**Author Contributions:** Investigation, writing—original draft preparation, A.C.; writing—review and editing, D.V.G. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by a grant of the Republic of Bashkortostan, the Russian Federation, for young scientists, grant number 28 of 07.03.2019. The reported study was funded partially by the Russian Foundation for Basic Research (RFBR) according to the research project No. 19-58-80018 BRICS\_t.

**Acknowledgments:** Anna Churakova acknowledges Natalya Nikolaevna Resnina (St. Petersburg State University) for conducting the DSC research.

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
