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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-39</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>О	ПОСТРОЕНИИ РЕШЕНИЙ С ЗАДАННЫМИ ПРЕДЕЛЬНЫМИ СВОЙСТВАМИ У СИСТЕМ, ОПИСЫВАЮЩИХ МОДЕЛИ ХЕМОСТАТА</article-title><trans-title-group xml:lang="en"><trans-title>CONSTRUCTION OF SOLUTIONS WITH THE GIVEN LIMIT PROPERTIES FOR THE SYSTEMS DESCRIBING THE CHEMOSTAT MODELS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чичурин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chichurin</surname><given-names>A. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Швычкина</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shvychkina</surname><given-names>A. N.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Брестский государственный университет имени А. С. Пушкина</institution></aff><aff xml:lang="en"><institution>A.S. Pushkin Brest State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>16</day><month>05</month><year>2016</year></pub-date><volume>0</volume><issue>1</issue><fpage>69</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чичурин А.В., Швычкина Е.Н., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Чичурин А.В., Швычкина Е.Н.</copyright-holder><copyright-holder xml:lang="en">Chichurin A.V., Shvychkina A.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestifm.belnauka.by/jour/article/view/39">https://vestifm.belnauka.by/jour/article/view/39</self-uri><abstract><p>Исследуется система трех дифференциальных уравнений, описывающая процесс непрерывного культивирования бактерий в хемостате. Для простой пищевой цепочки, описываемой динамической моделью хемостата Михаэлиса Ментена, построено двухпараметрическое аналитическое решение. Используя возможности СКА Mathematica, построены алгоритм и программный модуль, которые позволяют находить явный вид решений, обладающих заданными предельными свойствами. Приведены примеры, в которых удается смоделировать выживание или вымирание одного или двух микроорганизмов, а также выделить интервалы значений начальных концентраций, обеспечивающих «конкурирующее исключение» или сосуществование обоих микро организмов.</p></abstract><trans-abstract xml:lang="en"><p>A system of three differential equations describing the process of continuous bacteria cultivation in a chemostat is considered. For a simple food chain described by the dynamic Michaelis-Menten chemostat model a two-parameter analytical solution is obtained. An algorithm and software allowing one to find an explicit form of solutions with the given limit properties have been constructed with the usage of the CAS Mathematica capabilities. Examples, in which it is possible to model the survival or extinction of one or two microorganisms and to find initial concentration ranges, provide “competitive exclusion” or coexistence of the both organisms, are given.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Smith H. L., Waltman P. The theory of chemostat: dynamics of microbial competition. Cambridge University Press, 1995.</mixed-citation><mixed-citation xml:lang="en">Smith H. L., Waltman P. The theory of chemostat: dynamics of microbial competition. Cambridge University Press, 1995.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Hsu S. 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