{"id":"https://openalex.org/A5110045745","orcid":null,"observed_orcids":[],"display_name":"Masahiro Kai","raw_author_names":["Kai, M.","M Kai","M. KAI","M. Kai","Masa-Hiro Kai","Masa-hiro Kai","Masahiro KAI","Masahiro Kai"],"full_name":"Masahiro Kai","works_count":63,"cited_by_count":1294,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":19,"i10_index":27},"ids":{"openalex":"https://openalex.org/A5110045745","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I114531698","ror":"https://ror.org/0112mx960","display_name":"Tokyo Institute of Technology","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698","https://openalex.org/I4400009020"]},"years":[1994,1991,1989]},{"institution":{"id":"https://openalex.org/I116465919","ror":"https://ror.org/01wc2tq75","display_name":"Kogakuin University","country_code":"JP","type":"education","lineage":["https://openalex.org/I116465919"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I118574687","ror":"https://ror.org/0447kww10","display_name":"University of Miyazaki","country_code":"JP","type":"education","lineage":["https://openalex.org/I118574687"]},"years":[2008,2006,2002,2000]},{"institution":{"id":"https://openalex.org/I131231118","ror":"https://ror.org/002rw7y37","display_name":"Aoyama Gakuin University","country_code":"JP","type":"education","lineage":["https://openalex.org/I131231118"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I133557312","ror":"https://ror.org/00x194q47","display_name":"Rikkyo University","country_code":"JP","type":"education","lineage":["https://openalex.org/I133557312"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I157090871","ror":"https://ror.org/05q041y44","display_name":"Kokugakuin University","country_code":"JP","type":"education","lineage":["https://openalex.org/I157090871"]},"years":[2001]},{"institution":{"id":"https://openalex.org/I4210122300","ror":"https://ror.org/02r946p38","display_name":"Kagoshima City Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210122300"]},"years":[2002,2001]},{"institution":{"id":"https://openalex.org/I4405256868","ror":"https://ror.org/04m9r4v66","display_name":"Masuda Medical Association Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405256868"]},"years":[1988]},{"institution":{"id":"https://openalex.org/I4405257071","ror":"https://ror.org/04vqpwb25","display_name":"Miyazaki Medical Association Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405257071"]},"years":[2020,2019]},{"institution":{"id":"https://openalex.org/I4405257273","ror":"https://ror.org/053290d43","display_name":"The Japanese Society of Gastroenterology","country_code":"JP","type":"nonprofit","lineage":["https://openalex.org/I4405257273"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I69740276","ror":"https://ror.org/00ws30h19","display_name":"Tokyo Metropolitan University","country_code":"JP","type":"education","lineage":["https://openalex.org/I69740276"]},"years":[1990,1989,1988]},{"institution":{"id":"https://openalex.org/I79619799","ror":"https://ror.org/03angcq70","display_name":"University of Birmingham","country_code":"GB","type":"education","lineage":["https://openalex.org/I79619799"]},"years":[1970,1968,1967,1966]},{"institution":{"id":"https://openalex.org/I98285908","ror":"https://ror.org/035t8zc32","display_name":"The University of Osaka","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]},"years":[1998]}],"last_known_institutions":[{"id":"https://openalex.org/I4405257071","ror":"https://ror.org/04vqpwb25","display_name":"Miyazaki Medical Association Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405257071"]}],"topics":[{"id":"https://openalex.org/T10464","display_name":"Crystal structures of chemical compounds","count":10,"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/T10169","display_name":"Protein Kinase Regulation and GTPase Signaling","count":8,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"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/T13833","display_name":"Ferrocene Chemistry and Applications","count":8,"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/T10612","display_name":"Magnetism in coordination complexes","count":7,"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/T10518","display_name":"Gallbladder and Bile Duct Disorders","count":6,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13833","display_name":"Ferrocene Chemistry and Applications","value":0.0003175,"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/T11308","display_name":"Sphingolipid Metabolism and Signaling","value":6.71e-05,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"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/T12688","display_name":"Microbial metabolism and enzyme function","value":5.41e-05,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"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/T11073","display_name":"Metal Extraction and Bioleaching","value":4.42e-05,"subfield":{"id":"https://openalex.org/subfields/2506","display_name":"Metals and Alloys"},"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/T10612","display_name":"Magnetism in coordination complexes","value":4.17e-05,"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"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9918925762176514},{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9646912813186646},{"id":"8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","score":0.6635199189186096},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.285599946975708},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.25232285261154175}],"counts_by_year":[{"year":1966,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":1967,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1968,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1970,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1989,"works_count":4,"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":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":1,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":3,"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":8,"oa_works_count":3,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2006,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":1,"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":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":1,"oa_works_count":0,"cited_by_count":17},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":23},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":15},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":15},{"year":2016,"works_count":1,"oa_works_count":1,"cited_by_count":11},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2019,"works_count":2,"oa_works_count":0,"cited_by_count":35},{"year":2020,"works_count":2,"oa_works_count":2,"cited_by_count":42},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":43},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":54},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":62},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":46},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":32},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":11}],"display_name_alternatives":["Kai, M.","M Kai","M. KAI","M. Kai","Masa-Hiro Kai","Masa-hiro Kai","Masahiro KAI","Masahiro Kai"],"block_key":"m kai","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110045745","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5110045745","updated_date":"2026-11-13T15:08:24","created_date":"2016-06-24T00:00:00"}