1. The manuscript is submitted in the Word formats (.docx, .doc, .rtf). The full length scientific article may not exceed 25,000 characters, including whitespaces. If the volume of manuscript larger, the editorial team reserves the right to shorten it. The manuscript and accompanying documentation (in *.pdf format) are submitted by e-mail:;

1.1. The manuscript includes:

• Universal Decimal Classification (UDC) code;

• heading (according to subject heading list);

• title;

• data on author(s);

• abstract;

• keywords;

• text of the article (including Introduction, Research Methods, Main Part, Analysis of Results, Conclusion; Acknowledgements);

• all tables and figures have numbers (e.g. Table 1, Figure 1) and names (e.g. Table 1. Results of electrochemical tests). All digital and letter symbols should be explained in the figure legend or in the footnote.;

• references should include full bibliographic information.

1.2. The first page includes the following information: UDC, heading, title of the article (without acronyms and abbreviations), data on author(s): first and second names, position, department, institution, academic degree and titles, e-mail, city, country. Additionally, phone number and full postal address of a corresponding author are provided for editors to remove questions when working on the article.

1.3. Abstract may not be less than 200 and more than 250 words, and should not include references. It should succinctly describe the study, including brief description of all parts of the article structure: introduction, purposes and objectives, research methods, main part, analysis of results, and conclusion.

1.4. Keywords should reflect the main content of the article. Provide a maximum of 6 keywords, avoiding general and plural terms and multiple concepts (for example, 'and', 'of'). If possible, do not repeat the title and abstract terms, use the terms from the article text. Only abbreviations firmly established in the field may be eligible. The keywords will be used for indexing purposes.

1.5. Authors should use modern English scientific terminology, avoiding terms transcribed from foreign words. Words and names abbreviations except for the common measures, physical and mathematical variables and terms are allowed only with the full name initial indication. Narrowly specialized terms should be defined.

1.6. The article should be carefully verified by the author. In mathematical expressions, all variables and sub-indexes should be clearly marked: italic type for Latin letters, Roman type for Greek letters, superscripts and subscripts, capital and lowercase letters, letters and numbers similar by writing.

1.7. The reference list should include the works of national and foreign authors for the last 5–7 years. The original articles should have not less than 20–25 and not more than 30 sources cited, the surveys – not more than 50.

1.8. References should be numbered sequentially and given in square brackets in the text. The list is compiled according to the rules of reference lists execution in accordance with International Standard Bibliographic Description. Author(s) name(s), article title, journal title/book title, year of publication, volume number, the pagination must be present. Note that missing data will be highlighted at proof stage for the author to correct. Provide a translation into English of titles of articles, books, and journals in square brackets for Latin languages (French, German, etc.). The titles of articles, books, and journals written in non-Latin languages (Russian, Chinese, etc.) should be transliterated with Latin alphabet and translated into English in square brackets. The author is solely responsible for the accuracy of the reference data.

2. Rules for article design

2.1. Rules for text design:

• all pages should be numbered;

• full text of the manuscript is Times New Roman, point size 12;

• all paragraphs should be left-aligned, paragraph indent – 0, line spacing – 1.5, hyphens are switched off, line/section/page and other breaks should be removed;

• lists should be made manually (!), without automatic formatting;

• highlighting in the text – boldface font;

• the International System of Units (SI) for measuring physical and mathematical values should be used;

• when typing formulas and parts of the formulas in the text, the Word Equation Editor with standard setting should be used. The Greek alphabet letters used for mathematical and physical values should be also typed in the text using the Word Equation Editor only (italic type for Latin letters, Roman type for Greek letters).

• a table should be made in Word or Excel table formats only, imports from .pdf or .jpeg will not be accepted.

2.2. Rules for design of graphic materials:

• plots and diagrams should be sent separately, in .ai, .tif, .jpeg, .eps formats, and are attached in the text;

• photographs should be sent in separate files in .jpeg, .gif, .tif formats, scale 1:1, resolution at least 300 dpi, without retouching and color correction. Photographs in the Word will not be accepted.

3. Authorship

3.1. Each author must sign the article. Signing the article, the author thereby transmits the right for its publication to editors, guarantees its originality and certifies that neither article nor figures hereto have been published previously and are not sent for publishing in other editions.

3.2. The author must have accurate and complete information on the research described in the article, which can be provided upon request.

3.3. The author has no right to submit one article for publication in several scientific editions. In case of use the information, which was previously published in the article, the author must make the reference on this source.

3.4. The author must confirm that his/her article is original, and specify the sources of the information cited, if any, in order to obtain a permit for other authors' works references.

3.5. The author is responsible for adherence to the national and local laws. The author must obtain approval for publication from the organization that conducted research.

3.6. Presence or absence of potential conflict of interests must be stated (e.g. competing interests that, in the author's opinion, may have direct or indirect influence on the process of publication).

3.7. In case of significant error identification in the publication, the author is obliged to notify the editor immediately. During the whole process of publication, the author must cooperate with the editor and publisher, adding, subtracting, and correcting the article if necessary. In case of significant error, inaccuracy, etc. identified after the publication, the editors reserve the right to withdraw the published article.

3.8. The author takes full responsibility for a possible plagiarism of the text, figures, etc. Any violation of copyrights will be reviewed according to the COPE algorithm. Articles submitted with violation of the execution guidelines will not be reviewed.