{"id":"https://openalex.org/A5031996944","orcid":"https://orcid.org/0000-0002-1289-1598","observed_orcids":["https://orcid.org/0000-0002-1289-1598"],"display_name":"Ryan Merckel","raw_author_names":["Dr Merckel","Dr. Merckel","Merckel RD","R. D. Merckel","R.D. Merckel","Ryan D. Merckel","Ryan David Merckel","Ryan Merckel"],"full_name":"Ryan David Merckel","works_count":15,"cited_by_count":139,"summary_stats":{"2yr_mean_citedness":7.0,"h_index":7,"i10_index":5},"ids":{"openalex":"https://openalex.org/A5031996944","orcid":"https://orcid.org/0000-0002-1289-1598","observed_orcids":["https://orcid.org/0000-0002-1289-1598"]},"affiliations":[{"institution":{"id":"https://openalex.org/I17948180","ror":"https://ror.org/05snt2t16","display_name":"Mintek","country_code":"ZA","type":"facility","lineage":["https://openalex.org/I17948180"]},"years":[2025]},{"institution":{"id":"https://openalex.org/I69552723","ror":"https://ror.org/00g0p6g84","display_name":"University of Pretoria","country_code":"ZA","type":"education","lineage":["https://openalex.org/I69552723"]},"years":[2025,2022,2020,2019,2018,2017,2012]},{"institution":{"id":"https://openalex.org/I82509713","ror":"https://ror.org/033vfbz75","display_name":"M\u00e4lardalen University","country_code":"SE","type":"education","lineage":["https://openalex.org/I82509713"]},"years":[2025]}],"last_known_institutions":[{"id":"https://openalex.org/I17948180","ror":"https://ror.org/05snt2t16","display_name":"Mintek","country_code":"ZA","type":"facility","lineage":["https://openalex.org/I17948180"]},{"id":"https://openalex.org/I69552723","ror":"https://ror.org/00g0p6g84","display_name":"University of Pretoria","country_code":"ZA","type":"education","lineage":["https://openalex.org/I69552723"]},{"id":"https://openalex.org/I82509713","ror":"https://ror.org/033vfbz75","display_name":"M\u00e4lardalen University","country_code":"SE","type":"education","lineage":["https://openalex.org/I82509713"]}],"topics":[{"id":"https://openalex.org/T10088","display_name":"Thermochemical Biomass Conversion Processes","count":11,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T10016","display_name":"Adsorption and biosorption for pollutant removal","count":3,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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/T10117","display_name":"Advanced Combustion Engine Technologies","count":3,"subfield":{"id":"https://openalex.org/subfields/1507","display_name":"Fluid Flow and Transfer Processes"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10507","display_name":"Biodiesel Production and Applications","count":3,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T12852","display_name":"Chemical Thermodynamics and Molecular Structure","count":3,"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"}}],"topic_share":[{"id":"https://openalex.org/T10088","display_name":"Thermochemical Biomass Conversion Processes","value":3.61e-05,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T12186","display_name":"Phosphorus and nutrient management","value":2.61e-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/T10507","display_name":"Biodiesel Production and Applications","value":2e-05,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"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/T12852","display_name":"Chemical Thermodynamics and Molecular Structure","value":1.9e-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/T11275","display_name":"Composting and Vermicomposting Techniques","value":1.44e-05,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil 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":0.8085744380950928},{"id":"548081761","wikidata":"https://www.wikidata.org/wiki/Q180388","display_name":"Waste management","score":0.7641732692718506},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.5802363753318787},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.32256096601486206},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.287437379360199}],"counts_by_year":[{"year":2012,"works_count":1,"oa_works_count":1,"cited_by_count":1},{"year":2015,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2017,"works_count":1,"oa_works_count":1,"cited_by_count":1},{"year":2018,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2019,"works_count":1,"oa_works_count":0,"cited_by_count":4},{"year":2020,"works_count":4,"oa_works_count":2,"cited_by_count":12},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2022,"works_count":2,"oa_works_count":1,"cited_by_count":20},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":23},{"year":2025,"works_count":3,"oa_works_count":2,"cited_by_count":19},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":35}],"display_name_alternatives":["Dr Merckel","Dr. Merckel","Merckel RD","R. D. Merckel","R.D. Merckel","Ryan D. Merckel","Ryan David Merckel","Ryan Merckel"],"block_key":"r merckel","works_api_url":"https://api.openalex.org/works?filter=author.id:A5031996944","awards_count":0,"updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}