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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.12737/12598</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-34</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="en"><subject>PROCESSES AND MACHINES OF AGRO - ENGINEERING SYSTEMS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ПРОЦЕССЫ И МАШИНЫ АГРОИНЖЕНЕРНЫХ СИСТЕМ</subject></subj-group></article-categories><title-group><article-title>Calculation of water rise in curvilinear capillaries by tangent angle to the meniscus</article-title><trans-title-group xml:lang="ru"><trans-title>Расчет подъема воды в криволинейных капиллярах по углу наклона касательной к мениску</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>Кипнис</surname><given-names>Иосиф Аншелевич</given-names></name><name name-style="western" xml:lang="en"><surname>Kipnis</surname><given-names>Iosif A</given-names></name></name-alternatives><email xlink:type="simple">ikipnis@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вернигоров</surname><given-names>Юрий Михайлович</given-names></name><name name-style="western" xml:lang="en"><surname>Vernigorov</surname><given-names>Yury M.</given-names></name></name-alternatives><email xlink:type="simple">jvernigorov@dstu.edu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «Научно-производственная фирма “КАСИОР”»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>“KASIOR” Research and Production Company LLC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Донской государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Don State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2015</year></pub-date><volume>15</volume><issue>3</issue><fpage>89</fpage><lpage>95</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kipnis I.A., Vernigorov Y.M., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Кипнис И.А., Вернигоров Ю.М.</copyright-holder><copyright-holder xml:lang="en">Kipnis I.A., Vernigorov Y.M.</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://www.vestnik-donstu.ru/jour/article/view/34">https://www.vestnik-donstu.ru/jour/article/view/34</self-uri><abstract><p>The work objectives are the simulation of the water distribution in the symmetric multilevel capillary systems with curvilinear capillaries, and the calculation of water rise in the curvilinear capillaries by the angle of inclination to the horizontal tangent to the water meniscus in the capillary. For a complete description of the water advance in the curvilinear branches of different levels, the coordinates of the water menisci in those levels about the axes y and x related respectively to the vertical capillary axis and the water surface are determined. Ceteris paribus, the value of water movement in the curvilinear capillaries is always greater than in the straight ones. The results obtained are useful in studying the conductivity of xylem vessels and the promotion of soil moisture in the plant structures which is directly related to the rising and distribution of water in the xylem. It is shown that with increase of the number of levels, the tangent angle to the water menisci in the curvilinear branches is reduced in comparison with the first curvilinear branch. The reduction of this angle indicates that the water in the curvilinear branches is moving the less, the higher the level number is.</p></abstract><trans-abstract xml:lang="ru"><p>Целями данной работы являются моделирование распределения воды в многоуровневых симметричных капиллярных системах с криволинейными капиллярами, а также расчет подъема воды в криволинейных капиллярах по углу наклона к горизонтали касательной к мениску воды в капилляре. Для полного описания продвижения воды в криволинейных ветвях разных уровней определены координаты менисков воды в этих уровнях относительно осей y и x , связанных, соответственно, с осью вертикального капилляра и поверхностью воды. При прочих равных условиях величина продвижения воды в криволинейных капиллярах всегда больше, чем в прямолинейных. Полученные результаты полезны при изучении проводимости сосудов ксилемы и продвижения почвенной влаги в структурах растения, что напрямую связано с подъемом и распределением воды в ксилеме. Показано, что по мере увеличения количества уровней угол наклона касательной к менискам воды в криволинейных ветвях уменьшается по сравнению с первой криволинейной ветвью. Уменьшение этого угла показывает, что вода в криволинейных ветвях продвигается тем меньше, чем больше номер уровня.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>многоуровневый криволинейный капилляр</kwd><kwd>ветвь</kwd><kwd>ксилема</kwd><kwd>транспирация</kwd><kwd>растение</kwd><kwd>модель</kwd><kwd>multilevel curvilinear capillary</kwd><kwd>branch</kwd><kwd>xylem</kwd><kwd>transpiration</kwd><kwd>plant</kwd><kwd>model</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Кузнецов, В. В. Физиология растений / В. В. Кузнецов, Г. А. Дмитриева. - 2-е изд., перераб. и доп. - Москва : Высшая школа, 2006. - 742 с.</mixed-citation><mixed-citation xml:lang="en">Kuznetsov, V.V., Dmitriyeva, G.A. 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