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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">mrisel</journal-id><journal-title-group><journal-title xml:lang="en">Magnetic Resonance in Solids</journal-title><trans-title-group xml:lang="ru"><trans-title>Magnetic Resonance in Solids</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2072-5981</issn><publisher><publisher-name>Kazan Federal University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/mrsej-25307</article-id><article-id custom-type="elpub" pub-id-type="custom">mrisel-292</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Application of complex NMR analysis to characterize pore space</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kazan 420008</p></bio><email xlink:type="simple">f.ma.dima@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Melnikova</surname><given-names>D. L.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kazan 420008</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Alexandrov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kazan 420008</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Skirda</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kazan 420008</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Kazan Federal University</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>16</day><month>12</month><year>2025</year></pub-date><volume>27</volume><issue>3</issue><elocation-id>25307 (13 pp.)</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Ivanov D.S., Melnikova D.L., Alexandrov A.S., Skirda V.D., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ivanov D.S., Melnikova D.L., Alexandrov A.S., Skirda V.D.</copyright-holder><copyright-holder xml:lang="en">Ivanov D.S., Melnikova D.L., Alexandrov A.S., Skirda V.D.</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.mrsej.ru/jour/article/view/292">https://www.mrsej.ru/jour/article/view/292</self-uri><abstract><p>Using the example of a study on a solid natural porous material, such as the core of dolomite rock, the effectiveness of three complementary NMR techniques is demonstrated. These techniques allow for the determination of the characteristics of the porous structure with sufficient accuracy, including the pore size distribution. Based on the combination of classical NMR relaxation and DDIF techniques, a method has been proposed for determining the surface relaxation parameter of the studied object without the need for additional physico-chemical research or reference to literature data.</p></abstract><kwd-group xml:lang="en"><kwd>magnetic resonance</kwd><kwd>NMR</kwd><kwd>relaxation</kwd><kwd>diffusion</kwd><kwd>porous media</kwd><kwd>pore size distribution</kwd><kwd>surface relaxation</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was funded by the subsidy allocated to Kazan Federal University for the state assignment in the sphere of scientific activities number FZSM-2023-0016.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Danielson R., Sutherland P., Methods of soil analysis: part 1 physical and mineralogical methods 5, 443 (1986).</mixed-citation><mixed-citation xml:lang="en">Danielson R., Sutherland P., Methods of soil analysis: part 1 physical and mineralogical methods 5, 443 (1986).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Qiu J., Khalloufi S., Martynenko A., Van Dalen G., Schutyser M., Almeida-Rivera C., Drying Technology 33, 1681 (2015).</mixed-citation><mixed-citation xml:lang="en">Qiu J., Khalloufi S., Martynenko A., Van Dalen G., Schutyser M., Almeida-Rivera C., Drying Technology 33, 1681 (2015).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Dullien F. 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