{"id":"https://openalex.org/A5110131437","orcid":"https://orcid.org/0000-0002-8659-1141","observed_orcids":["https://orcid.org/0000-0002-8659-1141"],"display_name":"Cahit Helvac\u0131","raw_author_names":["CAHIT HELVACI","CAH\u0130T HELVACI","Cahit HELVACI","Cahit Helvaci","Cahit Helvac\u00ed","Cahit Helvac\u0131","Cahi\u0307t Helvaci","Cah\u00edt Helvaci","Cah\u0130t Helvaci","Cah\u0131t Helvaci","C\u01cehit Helvaci","Helvaci, C","Helvaci, Cahit","Helvac\u0131, Cahit"],"full_name":"Cahit Helvac\u0131","works_count":123,"cited_by_count":2889,"summary_stats":{"2yr_mean_citedness":1.5,"h_index":32,"i10_index":64},"ids":{"openalex":"https://openalex.org/A5110131437","orcid":"https://orcid.org/0000-0002-8659-1141","observed_orcids":["https://orcid.org/0000-0002-8659-1141"]},"affiliations":[{"institution":{"id":"https://openalex.org/I193615760","ror":"https://ror.org/00dbd8b73","display_name":"Dokuz Eyl\u00fcl University","country_code":"TR","type":"education","lineage":["https://openalex.org/I193615760"]},"years":[2026,2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2005,2004,2003,2002,2001,2000,1995,1994,1988,1986]}],"last_known_institutions":[{"id":"https://openalex.org/I193615760","ror":"https://ror.org/00dbd8b73","display_name":"Dokuz Eyl\u00fcl University","country_code":"TR","type":"education","lineage":["https://openalex.org/I193615760"]}],"topics":[{"id":"https://openalex.org/T10001","display_name":"Geological and Geochemical Analysis","count":64,"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/T11740","display_name":"Geochemistry and Elemental Analysis","count":60,"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/T13177","display_name":"Geological and Geophysical Studies","count":38,"subfield":{"id":"https://openalex.org/subfields/1907","display_name":"Geology"},"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/T10965","display_name":"Geological formations and processes","count":24,"subfield":{"id":"https://openalex.org/subfields/1904","display_name":"Earth-Surface Processes"},"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/T13205","display_name":"Geological and Geophysical Studies Worldwide","count":21,"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"}}],"topic_share":[{"id":"https://openalex.org/T13205","display_name":"Geological and Geophysical Studies Worldwide","value":0.0001936,"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/T11740","display_name":"Geochemistry and Elemental Analysis","value":0.0001123,"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/T10001","display_name":"Geological and Geochemical Analysis","value":7.39e-05,"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/T13443","display_name":"Mineralogy and Gemology Studies","value":7.17e-05,"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/T13442","display_name":"Geochemistry and Geochronology of Asian Mineral Deposits","value":6.1e-05,"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"}}],"x_concepts":[{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.9503159523010254},{"id":"17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","score":0.8331553936004639},{"id":"109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","score":0.6572250127792358},{"id":"151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","score":0.6065410375595093},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.5390893816947937}],"counts_by_year":[{"year":1977,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1984,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":8,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":7,"oa_works_count":4,"cited_by_count":108},{"year":2013,"works_count":8,"oa_works_count":2,"cited_by_count":109},{"year":2014,"works_count":8,"oa_works_count":1,"cited_by_count":142},{"year":2015,"works_count":12,"oa_works_count":4,"cited_by_count":146},{"year":2016,"works_count":4,"oa_works_count":0,"cited_by_count":187},{"year":2017,"works_count":7,"oa_works_count":1,"cited_by_count":188},{"year":2018,"works_count":3,"oa_works_count":0,"cited_by_count":118},{"year":2019,"works_count":6,"oa_works_count":1,"cited_by_count":212},{"year":2020,"works_count":5,"oa_works_count":1,"cited_by_count":186},{"year":2021,"works_count":1,"oa_works_count":1,"cited_by_count":190},{"year":2022,"works_count":2,"oa_works_count":2,"cited_by_count":199},{"year":2023,"works_count":2,"oa_works_count":1,"cited_by_count":211},{"year":2024,"works_count":4,"oa_works_count":3,"cited_by_count":153},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":195},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":145}],"display_name_alternatives":["CAHIT HELVACI","CAH\u0130T HELVACI","Cahit HELVACI","Cahit Helvaci","Cahit Helvac\u00ed","Cahit Helvac\u0131","Cahi\u0307t Helvaci","Cah\u00edt Helvaci","Cah\u0130t Helvaci","Cah\u0131t Helvaci","C\u01cehit Helvaci","Helvaci, C","Helvaci, Cahit","Helvac\u0131, Cahit"],"block_key":"c helvaci","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110131437","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}
