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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">GYZHWV</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16332</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16332</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Radiation characteristics of coals at different stages of metamorphism</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Радиационные характеристики углей разных степеней метаморфизма</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Aluker</surname>
            <given-names>Nadezhda L.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Алукер</surname>
              <given-names>Н. Л.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Aluker</surname>
              <given-names>Nadezhda L.</given-names>
            </name>
          </name-alternatives>
          <email>naluker@gmail.com</email>
          <contrib-id contrib-id-type="orcid">0000-0002-6484-6617</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Федеральный исследовательский центр угля и углехимии СО РАН (Кемерово, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the RAS (Kemerovo, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Aduev</surname>
            <given-names>Boris P.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Адуев</surname>
              <given-names>Б. П.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Aduev</surname>
              <given-names>Boris P.</given-names>
            </name>
          </name-alternatives>
          <email>abp-icms@rambler.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1878-1071</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Федеральный исследовательский центр угля и углехимии СО РАН (Кемерово, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the RAS (Kemerovo, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Nurmukhametov</surname>
            <given-names>Denis R.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Нурмухаметов</surname>
              <given-names>Д. Р.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Nurmukhametov</surname>
              <given-names>Denis R.</given-names>
            </name>
          </name-alternatives>
          <email>ndr999@gmail.com</email>
          <contrib-id contrib-id-type="orcid">0000-0002-8301-9457</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Федеральный исследовательский центр угля и углехимии СО РАН (Кемерово, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the RAS (Kemerovo, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2025-01-17">
        <day>17</day>
        <month>01</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>271</volume>
      <fpage>131</fpage>
      <lpage>140</lpage>
      <history>
        <date date-type="received" iso-8601-date="2023-10-28">
          <day>28</day>
          <month>10</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2024-11-07">
          <day>07</day>
          <month>11</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2025-02-25">
          <day>25</day>
          <month>02</month>
          <year>2025</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2025 Н. Л. Алукер, Б. П. Адуев, Д. Р. Нурмухаметов</copyright-statement>
        <copyright-statement xml:lang="en">© 2025 Nadezhda L. Aluker, Boris P. Aduev, Denis R. Nurmukhametov</copyright-statement>
        <copyright-year>2025</copyright-year>
        <copyright-holder xml:lang="ru">Н. Л. Алукер, Б. П. Адуев, Д. Р. Нурмухаметов</copyright-holder>
        <copyright-holder xml:lang="en">Nadezhda L. Aluker, Boris P. Aduev, Denis R. Nurmukhametov</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16332">https://pmi.spmi.ru/pmi/article/view/16332</self-uri>
      <abstract xml:lang="ru">
        <p>Формирование залежей и последующие процессы метаморфизма концентрации радиоактивных элементов в углях могут являться индикаторами протекающих процессов, поэтому анализ тенденций изменения радиационных характеристик углей в ряду метаморфизма актуален. Цель работы – экспериментально оценить радиационные характеристики углей разных марок (стадий метаморфизма) методами термолюминесцентной (ТЛ) дозиметрии и определения бета-активности и выявить корреляции полученных данных с данными технического, элементного и термогравиметрических анализов, масс-спектрометрических и ЭПР-исследований. Для дозиметрических измерений, косвенно характеризующих содержания радионуклидов в углях, использовался модифицированный дозиметрический комплекс и оригинальные почво-эквивалентные термолюминесцентные детекторы на основе SiO2. Анализ полученных результатов обосновывает возможность применения ТЛ-исследований для определения зольности углей низких и средних степеней метаморфизма (ряд Б→Г) и отсутствие такой возможности для углей более высоких степеней. Совокупность корреляционных зависимостей в ряду метаморфизма свидетельствует о значительном изменении условий формирования угля в диапазоне времен формирования марок Г→Ж→К при резкой смене условий формирования (преобразования) в этот временной период. Резкие изменения условий регионального метаморфизма (времени, температуры, давления, окислительно-восстановительных условий) приурочены к границе пермского и триасового периодов (~250 млн лет назад), в которых происходили как преобразование существующих отложений угля, так и формирование новых залежей.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The formation of deposits and subsequent metamorphic processes that affect concentrations of radioactive elements in coal can indicate ongoing geological activities, therefore, analyzing trends in the radiation characteristics of coal throughout the metamorphic series is highly relevant. The aim of this work is to experimentally evaluate the radiation characteristics of different coal ranks (metamorphic stages) using thermoluminescent (TL) dosimetry and beta activity measurements, and to identify correlations between these radiation characteristics and data obtained from technical, elemental, and thermogravimetric analyses, as well as mass spectrometric and electron paramagnetic resonance spectroscopy (EPR) measurements. For dosimetric measurements that indirectly characterize the content of radionuclides in coal, a modified dosimetric complex and original soil-equivalent thermoluminescent detectors based on SiO2 were used. The analysis of the obtained results supports the use of TL studies to determine the ash content of coals at low and medium stages of metamorphism (coal rank B→G), while indicating that this method is not feasible for coals at higher stages of metamorphism. The correlation dependencies in the metamorphism series suggest abrupt change in the conditions of coal formation during the time range corresponding to transformation from high to low volatile bituminous coals (coal rank G→Zh→K). These abrupt changes in regional metamorphism conditions (time, temperature, pressure, oxidation-reduction conditions) are confined to the boundary of the Permian and Triassic periods (~250 million years ago), during which both the transformation of existing coal deposits and the formation of new deposits occurred.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>уголь</kwd>
        <kwd>метаморфизм</kwd>
        <kwd>зольность</kwd>
        <kwd>термолюминесценция</kwd>
        <kwd>поглощенная доза</kwd>
        <kwd>радиоактивность</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>coal</kwd>
        <kwd>metamorphism</kwd>
        <kwd>ash content</kwd>
        <kwd>thermoluminescence</kwd>
        <kwd>absorbed dose</kwd>
        <kwd>radioactivity</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания ИУХМ ФИЦ УУХ СО РАН (проект 121031500513-4) на оборудовании ЦКП ФИЦ УУХ СО РАН.</funding-statement>
        <funding-statement xml:lang="en">This work was carried out as part of the state assignment of the Institute of Coal Chemistry and Material Science, Federal Research Center for Coal and Coal Chemistry, Siberian Branch of the RAS (project 121031500513-4) using the equipment of the Shared Research Facilities of the Federal Research Center for Coal and Coal Chemistry, Siberian Branch of the RAS.</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
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