{"id":"https://openalex.org/A5111804522","orcid":null,"observed_orcids":[],"display_name":"M. Velcheva","raw_author_names":["M Velcheva","M. P. Velcheva","M. Velcheva","Maria P. Velcheva","Maria Velcheva"],"full_name":"MARIA P. VELCHEVA","works_count":21,"cited_by_count":320,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":9,"i10_index":9},"ids":{"openalex":"https://openalex.org/A5111804522","orcid":null,"observed_orcids":[]},"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":[2003,1999,1997,1996,1995,1994,1993,1992,1990,1981]},{"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":[1996,1994,1993,1990,1981]},{"institution":{"id":"https://openalex.org/I4210144807","ror":"https://ror.org/04e5bwf87","display_name":"Agricultural University Plovdiv","country_code":"BG","type":"education","lineage":["https://openalex.org/I4210144807"]},"years":[2003,2001,1999]},{"institution":{"id":"https://openalex.org/I4210163436","ror":"https://ror.org/05cka2t18","display_name":"Agricultural Academy","country_code":"BG","type":"government","lineage":["https://openalex.org/I4210163436"]},"years":[1991]},{"institution":{"id":"https://openalex.org/I4405253737","ror":"https://ror.org/0119pw819","display_name":"InnoTech Alberta","country_code":"CA","type":"government","lineage":["https://openalex.org/I4405253737"]},"years":[2010]}],"last_known_institutions":[{"id":"https://openalex.org/I4405253737","ror":"https://ror.org/0119pw819","display_name":"InnoTech Alberta","country_code":"CA","type":"government","lineage":["https://openalex.org/I4405253737"]}],"topics":[{"id":"https://openalex.org/T11613","display_name":"Phytochemistry and Biological Activities","count":9,"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/T10240","display_name":"Plant tissue culture and regeneration","count":7,"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":4,"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","count":4,"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/T12649","display_name":"Alkaloids: synthesis and pharmacology","count":3,"subfield":{"id":"https://openalex.org/subfields/3004","display_name":"Pharmacology"},"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/T12497","display_name":"Traditional and Medicinal Uses of Annonaceae","value":0.0001974,"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/T12059","display_name":"Berberine and alkaloids research","value":0.0001469,"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/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/T13188","display_name":"Synthesis and bioactivity of alkaloids","value":6.58e-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/T12161","display_name":"Plant Surface Properties and Treatments","value":5.65e-05,"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"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9270630478858948},{"id":"2777667214","wikidata":"https://www.wikidata.org/wiki/Q70702","display_name":"Alkaloid","score":0.9024931192398071},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.8656195402145386},{"id":"59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","score":0.6380722522735596},{"id":"55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","score":0.4659596085548401}],"counts_by_year":[{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1993,"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":3,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":12},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":22},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":18},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":10},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":14},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":22},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":12},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":5}],"display_name_alternatives":["M Velcheva","M. P. Velcheva","M. Velcheva","Maria P. Velcheva","Maria Velcheva"],"block_key":"m velcheva","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111804522","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5111804522","updated_date":"2026-11-10T14:30:39","created_date":"2016-06-24T00:00:00"}