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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">izmertech-507</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>ГОСУДАРСТВЕННЫЕ ЭТАЛОНЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>STATE STANDARDS</subject></subj-group></article-categories><title-group><article-title>Государственный первичный специальный эталон единицы массы радия</article-title><trans-title-group xml:lang="en"><trans-title></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>Моисеев</surname><given-names>Н. Н.</given-names></name></name-alternatives><email xlink:type="simple">N.N.Moiseev@vniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Всероссийский научно-исследовательский институт метрологии им. Д. И. Менделеева</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2013</year></pub-date><pub-date pub-type="epub"><day>07</day><month>02</month><year>2023</year></pub-date><volume>0</volume><issue>9</issue><fpage>5</fpage><lpage>8</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/507">https://www.izmt.ru/jour/article/view/507</self-uri><abstract><p>Рассмотрено современное состояние государственного первичного специального эталона единицы массы радия ГЭТ 7–2011, модернизация которого проводилась в период 2009–2011 гг. Описаны состав эталона, основные физические принципы его работы, метрологические характеристики.</p></abstract><trans-abstract xml:lang="en"><p>The current status of the state primary special standard of radium mass unit GET 7–2011 modernized during 2009–2011 is considered. The structure of the standard, the basic physical operation principles and the metrological characteristics are described.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>масса радия</kwd><kwd>эталон</kwd><kwd>образец Хенигшмидта</kwd><kwd>активность</kwd><kwd>radium mass</kwd><kwd>standard</kwd><kwd>Honigshmidtsample</kwd><kwd>activity</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">Comite Consult. Pour les etalons de mesure de radiations ionisates.2 Sess., Paris, 1960.P. 46–48.</mixed-citation><mixed-citation xml:lang="en">Comite Consult. 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