{"id":"https://openalex.org/A5110095902","orcid":"https://orcid.org/0000-0001-6257-9191","observed_orcids":["https://orcid.org/0000-0001-6257-9191"],"display_name":"Nadezhda Kostova","raw_author_names":["Kostova, Nadezhda","Nadezhda Kostova","\u041a\u043e\u0441\u0442\u043e\u0432\u0430, \u041d\u0430\u0434\u0435\u0436\u0434\u0430"],"full_name":"Kostova, Nadezhda","works_count":24,"cited_by_count":153,"summary_stats":{"2yr_mean_citedness":2.3333333333333335,"h_index":7,"i10_index":5},"ids":{"openalex":"https://openalex.org/A5110095902","orcid":"https://orcid.org/0000-0001-6257-9191","observed_orcids":["https://orcid.org/0000-0001-6257-9191"]},"affiliations":[{"institution":{"id":"https://openalex.org/I24768866","ror":"https://ror.org/01x8hew03","display_name":"Bulgarian Academy of Sciences","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},"years":[2026,2025,2023,2022,2020,2019,2018,2016,2015,2014,2010,2006,2005]},{"institution":{"id":"https://openalex.org/I4210094418","ror":"https://ror.org/00jbx2e92","display_name":"Institute of Organic Chemistry with Centre of Phytochemistry","country_code":"BG","type":"facility","lineage":["https://openalex.org/I24768866","https://openalex.org/I4210094418"]},"years":[2025,2022,2020,2019,2018,2015,2014,2010,2006,2005]}],"last_known_institutions":[{"id":"https://openalex.org/I24768866","ror":"https://ror.org/01x8hew03","display_name":"Bulgarian Academy of Sciences","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]}],"topics":[{"id":"https://openalex.org/T11613","display_name":"Phytochemistry and Biological Activities","count":17,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12059","display_name":"Berberine and alkaloids research","count":11,"subfield":{"id":"https://openalex.org/subfields/2736","display_name":"Pharmacology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12215","display_name":"Phytochemical Studies and Bioactivities","count":5,"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/T13971","display_name":"Isoquinoline Alkaloid Synthesis","count":5,"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/T12756","display_name":"Plant Toxicity and Pharmacological Properties","count":4,"subfield":{"id":"https://openalex.org/subfields/3005","display_name":"Toxicology"},"field":{"id":"https://openalex.org/fields/30","display_name":"Pharmacology, Toxicology and Pharmaceutics"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12059","display_name":"Berberine and alkaloids research","value":0.000404,"subfield":{"id":"https://openalex.org/subfields/2736","display_name":"Pharmacology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12497","display_name":"Traditional and Medicinal Uses of Annonaceae","value":0.000148,"subfield":{"id":"https://openalex.org/subfields/1303","display_name":"Biochemistry"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T13124","display_name":"Chemical synthesis and alkaloids","value":8.93e-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/T13971","display_name":"Isoquinoline Alkaloid Synthesis","value":8.41e-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/T12756","display_name":"Plant Toxicity and Pharmacological Properties","value":7.47e-05,"subfield":{"id":"https://openalex.org/subfields/3005","display_name":"Toxicology"},"field":{"id":"https://openalex.org/fields/30","display_name":"Pharmacology, Toxicology and Pharmaceutics"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"x_concepts":[{"id":"2777667214","wikidata":"https://www.wikidata.org/wiki/Q70702","display_name":"Alkaloid","score":0.9195073843002319},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.8455346822738647},{"id":"59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","score":0.6975648403167725},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.6843000054359436},{"id":"71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","score":0.52920001745224}],"counts_by_year":[{"year":2005,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2014,"works_count":3,"oa_works_count":0,"cited_by_count":4},{"year":2015,"works_count":3,"oa_works_count":3,"cited_by_count":2},{"year":2016,"works_count":1,"oa_works_count":1,"cited_by_count":4},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2018,"works_count":2,"oa_works_count":2,"cited_by_count":11},{"year":2019,"works_count":4,"oa_works_count":2,"cited_by_count":8},{"year":2020,"works_count":2,"oa_works_count":2,"cited_by_count":16},{"year":2021,"works_count":1,"oa_works_count":0,"cited_by_count":16},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":11},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":12},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2025,"works_count":2,"oa_works_count":1,"cited_by_count":20},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":17}],"display_name_alternatives":["Kostova, Nadezhda","Nadezhda Kostova","\u041a\u043e\u0441\u0442\u043e\u0432\u0430, \u041d\u0430\u0434\u0435\u0436\u0434\u0430"],"block_key":"n kostova","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110095902","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5110095902","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}