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    Acta Scientifica Naturalis strongly encourages online submissions. Please read these instructions carefully and follow them strictly. In this way You will help ensure that the review and publication of Your paper are as efficient and quick as possible. Please send Your manuscripts to d.zahariev@shu.bg (Editor Executive) with copy to ch.christov@shu.bg (Editor-in-Chief). The editors reserve the right to return manuscripts that are not in accordance with these instructions. The papers must be clearly and concisely written in English.


    Editorial policy

    All submitted manuscripts should contain original research not previously published and not under consideration for publication elsewhere. The primary criterion for acceptance is scientific quality. Papers should avoid excessive use of abbreviations or jargon, and should be intelligible to as wide an audience as possible. Particular attention should be paid to the Abstract, Introduction, and Discussion sections, which should clearly draw attention to the novelty and significance of the data reported. Failure to do this may result in delays in publication or rejection of the paper.

    Texts can be published as a review, a full paper (article) or as a short communication.


    Types of papers

    Reviews are published by invitation only. However, a proposal for a Review may be submitted in the form of a brief letter to the Editor at any time. The letter should state the topics and authors of the proposed review, and should state why the topic is of particular interest to the field.


    Whenever possible the articles should be subdivided into the following parts: 1. Front Page; 2.Abstract(written on a separate page, 200 words or less, no abbreviations); 3. Introduction; 4. Materials and Methods; 5. Results; 6. Discussion; 7. Acknowledgments, if applicable; 8. References. Articles from some areas should follow their usual format. In some cases it may be advisable to omit part (4) and to merge parts (5) and (6). Whenever applicable, the Materials and Methods section should indicate the Ethics Committee that evaluated the procedures for human studies or the norms followed for the maintenance and experimental treatments of animals.

    Short communications

    Short communications aim to report on research which has progressed to the stage when it is considered that results should be divulged rapidly to other workers in the field. A short communication should also have an Abstract (100 words or less) and should not exceed 1,500 words.

    Tables and Figures may be included but the text length should be proportionally reduced. Manuscripts submitted as articles but found to fit these specifications will be published as short communications upon the author’s agreement.


    Article processing charges

    Acta Scientifica Naturalis is an open access journal. To publish in Acta Scientifica Naturalis, authors are required to pay an article processing charge (APC).

    The APC for all published papers is as follows, plus VAT or local taxes where applicable:

    €120.00, of which €100.00 Charge + €20.00 VAT (Europe and rest of World)

    The APC transfer details are as follows:

    Name of the organization: Konstanin Preslavsky University of Shumen
    Address: 115 Universitetska Str., 9700 Shumen, Bulgaria
    IBAN: BG55UBBS81553120050509

    When submitting the bank transfer, note the names of one of the authors and the Manuscript ID in the notes.


    Preparation of manuscripts

    All parts of the manuscript should be 1.0 line spacing. After acceptance, no changes will be made in the manuscript so that proofs require only correction of typographical errors.

    The authors should send their manuscript in electronic version only.

    Page format: Paper Size A4, portrait,

    Margins: Top – 2.2 cm, Bottom – 2.2 cm, Left – 2.2 cm,

    Right – 2.2 cm, Header – 0 cm, Footer – 1.7cm

    Length of manuscript: 10 pages A4 format.

    Tables and Illustrations

    Tables must be integrated in the text and must have captions above them: Times New Roman, Font Size 11pt, Centered, Paragraph spacing: Before 6pt, After 3pt.

    Digitalized figures

    1. Figures must be integrated in the text and must have captions under them: Times New Roman, Font Size 11pt, Centered, Paragraph spacing: Before 3pt, After 6pt.
    2. The figures are recommended to be colored.
    3. Chemical formulae must be integrated in the text as ChemDraw or ChemWindow objects or as images.

    Front page

    Article Title – Times New Roman, Font Size 11pt, Bold, Centered, Paragraph spacing – After 6pt,

    Authors – Times New Roman, Font Size 11pt, Bold, Centered, Paragraph spacing – After 6pt, Affiliation – Times New Roman, Font Size 11pt, Italic (Email Regular), Centered, Abstract – Times New Roman, Font Size 11pt, Bold &Italic, Justified, Paragraph spacing – Before 11pt, After 6pt, Keywords – Times New Roman, Font Size 11pt, Bold&Italic, Justified, Paragraph spacing – Before 6pt, After 6pt. 


    These should be included at the end of the text. Personal acknowledgments should precede those of institutions or agencies. Footnotes should be avoided; when necessary they must be numbered. Acknowledgments to grants and scholarships and of indebtedness to colleagues as well as mention to the origin of an article (e.g. thesis) should be added to the Acknowledgements section.


    These should be defined at their first occurrence in the text, except for official, standard abbreviations. Units and their symbols should conform to those approved by the International System of Units http://www.bipm.org/en/si/si_brochure/general.html.


    Authors are responsible for the accuracy of the References. The cited literature within the text must be marked with Arab digits in square brackets. The reference section must be arranged following the appearance in text and in following order: authors, journal (italic), year of issue (bold), volume (italic), first and last pages, Times New Roman, Font Size 11pt, Justified. 


    [1]. Ivanov, I. I.; Petrov, P. P., Zonarene, a Sesquiterpene from the Brown Seaweed Dictyopteris Zonarioides, Tetrahedron Lett. 2008, 50, 25-28.

    [2]. Kappe, C. O.; Stadler, A.; Dallinger, D., Microwaves in Organic and Medicinal Chemistry, Eds., R. Mannhold, H. Kubinyi and G. Folkers, John Wiley & Sons, 2012.

    [3]. Stella, L. In Radicals in Organic Synthesis; Renaud, P., Sibi, M. P., Eds.; Wiley-VCH: Weinheim, Germany, 2001, Vol. 2, p 407.

    In the case of references on other than Latin alphabet, rules of transliteration must be applied!

    Transliteration Rules

    The transliteration from the Cyrillic script into the Latin alphabet is the process of character replacement as follows:

    А = А, Б = В, В = V, Г = G, Д = D, Е = Е, Ж = ZH, 3 = Z, И = I, Й = Y, К = К, Л = L, М = М, Н = N, О = О, П = Р, Р = R, С = S, Т = Т, У = U, Ф = F, Х = КН, Ц = TSH, Ч = СН, Ш = SH,

    Щ = SHT, Ъ = U, ЬО = YO, Ю = YU, Я = YA, Э = Е, Ы = Y

    Example: Georgiev, R., Baiev, В., Baleva, D., Gadancheva, V., Zonev, К., Ikonomov, V. , Osteopoikilosis, Review and Contribution with Two Cases, Rentgenologiya i Radiologiya 2007, 46, 261-265