{"id":"https://openalex.org/A5110199713","orcid":null,"observed_orcids":[],"display_name":"N. N. Kovalyukh","raw_author_names":["N Kovalyukh","N N Kovalyukh","N. N. KOVALYUKH","N. N. Kovalyukh","Nikolai N Kovalyukh"],"full_name":"Nikolai N Kovalyukh","works_count":19,"cited_by_count":82,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":4,"i10_index":3},"ids":{"openalex":"https://openalex.org/A5110199713","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I149851306","ror":"https://ror.org/00je4t102","display_name":"National Academy of Sciences of Ukraine","country_code":"UA","type":"government","lineage":["https://openalex.org/I149851306"]},"years":[2009,2001,1993]},{"institution":{"id":"https://openalex.org/I4405263849","ror":"https://ror.org/008a88758","display_name":"The Institute of Environmental Geochemistry of National Academy of Sciences of Ukraine","country_code":"UA","type":"government","lineage":["https://openalex.org/I149851306","https://openalex.org/I4405263849"]},"years":[2009]}],"last_known_institutions":[{"id":"https://openalex.org/I149851306","ror":"https://ror.org/00je4t102","display_name":"National Academy of Sciences of Ukraine","country_code":"UA","type":"government","lineage":["https://openalex.org/I149851306"]},{"id":"https://openalex.org/I4405263849","ror":"https://ror.org/008a88758","display_name":"The Institute of Environmental Geochemistry of National Academy of Sciences of Ukraine","country_code":"UA","type":"government","lineage":["https://openalex.org/I149851306","https://openalex.org/I4405263849"]}],"topics":[{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","count":9,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10087","display_name":"Archaeology and ancient environmental studies","count":8,"subfield":{"id":"https://openalex.org/subfields/3302","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration","count":5,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10001","display_name":"Geological and Geochemical Analysis","count":3,"subfield":{"id":"https://openalex.org/subfields/1906","display_name":"Geochemistry and Petrology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11212","display_name":"Cultural Heritage Materials Analysis","count":3,"subfield":{"id":"https://openalex.org/subfields/1204","display_name":"Archeology (arts and humanities)"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13239","display_name":"Phosphorus compounds and reactions","value":2.01e-05,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10087","display_name":"Archaeology and ancient environmental studies","value":1.99e-05,"subfield":{"id":"https://openalex.org/subfields/3302","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12821","display_name":"Geological Formations and Processes Exploration","value":1.94e-05,"subfield":{"id":"https://openalex.org/subfields/1908","display_name":"Geophysics"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","value":1.48e-05,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration","value":1.43e-05,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"100134115","wikidata":"https://www.wikidata.org/wiki/Q173412","display_name":"Radiocarbon dating","score":0.9383939504623413},{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.7773445844650269},{"id":"87355193","wikidata":"https://www.wikidata.org/wiki/Q411","display_name":"Astrobiology","score":0.7246595025062561},{"id":"205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","score":0.47432491183280945},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.4407595694065094}],"counts_by_year":[{"year":1972,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2001,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2005,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":5}],"display_name_alternatives":["N Kovalyukh","N N Kovalyukh","N. N. KOVALYUKH","N. N. Kovalyukh","Nikolai N Kovalyukh"],"block_key":"n kovalyukh","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110199713","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5110199713","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}