{"id":"https://openalex.org/A5055138570","orcid":null,"observed_orcids":[],"display_name":"A. Messai","raw_author_names":["A Messai","A. Messai","Messai, A."],"full_name":"Messai, A.","works_count":8,"cited_by_count":6,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":2,"i10_index":0},"ids":{"openalex":"https://openalex.org/A5055138570","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210130929","ror":"https://ror.org/02yyskm09","display_name":"Abb\u00e8s Laghrour University of Khenchela","country_code":"DZ","type":"education","lineage":["https://openalex.org/I4210130929"]},"years":[2017]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10464","display_name":"Crystal structures of chemical compounds","count":8,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic 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/T10798","display_name":"Crystallography and molecular interactions","count":7,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical 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/T10939","display_name":"Crystal Structures and Properties","count":6,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11746","display_name":"Inorganic and Organometallic Chemistry","count":2,"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/T11025","display_name":"Nonlinear Optical Materials Research","count":1,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11025","display_name":"Nonlinear Optical Materials Research","value":7.7e-06,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10798","display_name":"Crystallography and molecular interactions","value":5.5e-06,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical 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/T10464","display_name":"Crystal structures of chemical compounds","value":5.2e-06,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic 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/T10939","display_name":"Crystal Structures and Properties","value":4.7e-06,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11746","display_name":"Inorganic and Organometallic Chemistry","value":3.5e-06,"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"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.78986656665802},{"id":"8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","score":0.6671404838562012},{"id":"116569031","wikidata":"https://www.wikidata.org/wiki/Q899107","display_name":"Ligand (biochemistry)","score":0.5919649004936218},{"id":"115624301","wikidata":"https://www.wikidata.org/wiki/Q895901","display_name":"Crystal structure","score":0.5321789383888245},{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.39018309116363525}],"counts_by_year":[{"year":2007,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2017,"works_count":2,"oa_works_count":2,"cited_by_count":3},{"year":2018,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":1}],"display_name_alternatives":["A Messai","A. Messai","Messai, A."],"block_key":"a messai","works_api_url":"https://api.openalex.org/works?filter=author.id:A5055138570","updated_date":"2026-10-27T12:30:23","created_date":"2017-02-17T00:00:00"}