{"id":"https://openalex.org/A5000485542","orcid":null,"observed_orcids":[],"display_name":"Kayako Hirooka","raw_author_names":["K Hirooka","K. Hirooka","Kayako HIROOKA","Kayako Hirooka","\u5ee3\u5ca1 \u4f73\u4e5f\u5b50","\u5ee3\u5ca1, \u4f73\u4e5f\u5b50"],"full_name":"Kayako Hirooka","works_count":23,"cited_by_count":529,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":9,"i10_index":9},"ids":{"openalex":"https://openalex.org/A5000485542","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I201537933","ror":"https://ror.org/01dq60k83","display_name":"Tohoku University","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]},"years":[2012,2011,2009]},{"institution":{"id":"https://openalex.org/I42405503","ror":"https://ror.org/024exxj48","display_name":"Gifu University","country_code":"JP","type":"education","lineage":["https://openalex.org/I42405503"]},"years":[2022,2020,2018,2016,2014,2013,2012]}],"last_known_institutions":[{"id":"https://openalex.org/I42405503","ror":"https://ror.org/024exxj48","display_name":"Gifu University","country_code":"JP","type":"education","lineage":["https://openalex.org/I42405503"]}],"topics":[{"id":"https://openalex.org/T11231","display_name":"Microbial Fuel Cells and Bioremediation","count":12,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10564","display_name":"Wastewater Treatment and Nitrogen Removal","count":11,"subfield":{"id":"https://openalex.org/subfields/2310","display_name":"Pollution"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10409","display_name":"Fuel Cells and Related Materials","count":6,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10030","display_name":"Electrocatalysts for Energy Conversion","count":3,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10284","display_name":"Anaerobic Digestion and Biogas Production","count":3,"subfield":{"id":"https://openalex.org/subfields/2215","display_name":"Building and Construction"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11231","display_name":"Microbial Fuel Cells and Bioremediation","value":7.88e-05,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10564","display_name":"Wastewater Treatment and Nitrogen Removal","value":4.35e-05,"subfield":{"id":"https://openalex.org/subfields/2310","display_name":"Pollution"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12186","display_name":"Phosphorus and nutrient management","value":3.77e-05,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10409","display_name":"Fuel Cells and Related Materials","value":2.32e-05,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12073","display_name":"Isotope Analysis in Ecology","value":2.21e-05,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"165337572","wikidata":"https://www.wikidata.org/wiki/Q902723","display_name":"Microbial fuel cell","score":0.9668295383453369},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.6627678871154785},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.619750440120697},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.23905324935913086},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.1576651930809021}],"counts_by_year":[{"year":2006,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":5,"oa_works_count":4,"cited_by_count":5},{"year":2013,"works_count":2,"oa_works_count":1,"cited_by_count":24},{"year":2014,"works_count":1,"oa_works_count":1,"cited_by_count":29},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":29},{"year":2016,"works_count":4,"oa_works_count":1,"cited_by_count":46},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":29},{"year":2018,"works_count":1,"oa_works_count":1,"cited_by_count":55},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":40},{"year":2020,"works_count":1,"oa_works_count":0,"cited_by_count":55},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":60},{"year":2022,"works_count":1,"oa_works_count":0,"cited_by_count":45},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":45},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":23},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":10}],"display_name_alternatives":["K Hirooka","K. Hirooka","Kayako HIROOKA","Kayako Hirooka","\u5ee3\u5ca1 \u4f73\u4e5f\u5b50","\u5ee3\u5ca1, \u4f73\u4e5f\u5b50"],"block_key":"k hirooka","works_api_url":"https://api.openalex.org/works?filter=author.id:A5000485542","updated_date":"2026-10-28T12:34:19","created_date":"2016-06-24T00:00:00"}