{"id":"https://openalex.org/W1918422242","doi":"https://doi.org/10.1109/iscas.2003.1204946","title":"System observability and nonlinear parameter identification of nonylphenol biodegradation kinetics","display_name":"System observability and nonlinear parameter identification of nonylphenol biodegradation kinetics","publication_year":2003,"publication_date":"2003-11-21","ids":{"openalex":"https://openalex.org/W1918422242","doi":"https://doi.org/10.1109/iscas.2003.1204946","mag":"1918422242"},"language":"en","primary_location":{"id":"doi:10.1109/iscas.2003.1204946","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2003.1204946","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03.","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5071478419","display_name":"Vishal Shah","orcid":"https://orcid.org/0000-0002-8858-7138"},"institutions":[{"id":"https://openalex.org/I122411786","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055","country_code":"US","type":"education","lineage":["https://openalex.org/I122411786"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"V. Shah","raw_affiliation_strings":["California Institute of Technology, USA","California Institute of Technology Pasadena CA USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"California Institute of Technology, USA","institution_ids":["https://openalex.org/I122411786"]},{"raw_affiliation_string":"California Institute of Technology Pasadena CA USA","institution_ids":["https://openalex.org/I122411786"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071666452","display_name":"A. Chaubal","orcid":null},"institutions":[{"id":"https://openalex.org/I859038795","display_name":"Virginia Tech","ror":"https://ror.org/02smfhw86","country_code":"US","type":"education","lineage":["https://openalex.org/I859038795"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A. Chaubal","raw_affiliation_strings":["Virginia Polytechnic Institute, USA","Virginia Tech"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Virginia Polytechnic Institute, USA","institution_ids":["https://openalex.org/I859038795"]},{"raw_affiliation_string":"Virginia Tech","institution_ids":["https://openalex.org/I859038795"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053050730","display_name":"R.R. Ramachandran","orcid":null},"institutions":[{"id":"https://openalex.org/I44265643","display_name":"Rowan University","ror":"https://ror.org/049v69k10","country_code":"US","type":"education","lineage":["https://openalex.org/I44265643"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R.R. Ramachandran","raw_affiliation_strings":["Rowan University, USA","ROWAN UNIVERSITY"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rowan University, USA","institution_ids":["https://openalex.org/I44265643"]},{"raw_affiliation_string":"ROWAN UNIVERSITY","institution_ids":["https://openalex.org/I44265643"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011542353","display_name":"Ra\u00fal Ord\u00f3\u00f1ez","orcid":"https://orcid.org/0000-0002-2912-9727"},"institutions":[{"id":"https://openalex.org/I127591826","display_name":"University of Dayton","ror":"https://ror.org/021v3qy27","country_code":"US","type":"education","lineage":["https://openalex.org/I127591826"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R. Ordonez","raw_affiliation_strings":["University of Dayton, USA","\u2028 University of Dayton"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Dayton, USA","institution_ids":["https://openalex.org/I127591826"]},{"raw_affiliation_string":"\u2028 University of Dayton","institution_ids":["https://openalex.org/I127591826"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034931789","display_name":"Kauser Jahan","orcid":null},"institutions":[{"id":"https://openalex.org/I44265643","display_name":"Rowan University","ror":"https://ror.org/049v69k10","country_code":"US","type":"education","lineage":["https://openalex.org/I44265643"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"K. Jahan","raw_affiliation_strings":["Rowan University, USA","ROWAN UNIVERSITY"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rowan University, USA","institution_ids":["https://openalex.org/I44265643"]},{"raw_affiliation_string":"ROWAN UNIVERSITY","institution_ids":["https://openalex.org/I44265643"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"3","issue":null,"first_page":"III","last_page":"24"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10122","display_name":"Toxic Organic Pollutants Impact","score":0.994700014591217,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10122","display_name":"Toxic Organic Pollutants Impact","score":0.994700014591217,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"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/T10419","display_name":"Pharmaceutical and Antibiotic Environmental Impacts","score":0.9854999780654907,"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/T10686","display_name":"Effects and risks of endocrine disrupting chemicals","score":0.9807000160217285,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/biodegradation","display_name":"Biodegradation","score":0.8625103831291199},{"id":"https://openalex.org/keywords/nonylphenol","display_name":"Nonylphenol","score":0.8431714773178101},{"id":"https://openalex.org/keywords/observability","display_name":"Observability","score":0.5441632270812988},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.5051994919776917},{"id":"https://openalex.org/keywords/biochemical-engineering","display_name":"Biochemical engineering","score":0.5041102170944214},{"id":"https://openalex.org/keywords/pollutant","display_name":"Pollutant","score":0.4432097375392914},{"id":"https://openalex.org/keywords/environmental-chemistry","display_name":"Environmental chemistry","score":0.4103164076805115},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.3655174970626831},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.34947943687438965},{"id":"https://openalex.org/keywords/biological-system","display_name":"Biological system","score":0.34184426069259644},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.13156771659851074},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.12484234571456909},{"id":"https://openalex.org/keywords/biology","display_name":"Biology","score":0.11611822247505188},{"id":"https://openalex.org/keywords/organic-chemistry","display_name":"Organic chemistry","score":0.08412772417068481},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.05938148498535156}],"concepts":[{"id":"https://openalex.org/C157021035","wikidata":"https://www.wikidata.org/wiki/Q696715","display_name":"Biodegradation","level":2,"score":0.8625103831291199},{"id":"https://openalex.org/C2780155452","wikidata":"https://www.wikidata.org/wiki/Q416769","display_name":"Nonylphenol","level":2,"score":0.8431714773178101},{"id":"https://openalex.org/C36299963","wikidata":"https://www.wikidata.org/wiki/Q1369844","display_name":"Observability","level":2,"score":0.5441632270812988},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.5051994919776917},{"id":"https://openalex.org/C183696295","wikidata":"https://www.wikidata.org/wiki/Q2487696","display_name":"Biochemical engineering","level":1,"score":0.5041102170944214},{"id":"https://openalex.org/C82685317","wikidata":"https://www.wikidata.org/wiki/Q19829510","display_name":"Pollutant","level":2,"score":0.4432097375392914},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.4103164076805115},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3655174970626831},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.34947943687438965},{"id":"https://openalex.org/C186060115","wikidata":"https://www.wikidata.org/wiki/Q30336093","display_name":"Biological system","level":1,"score":0.34184426069259644},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.13156771659851074},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.12484234571456909},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.11611822247505188},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.08412772417068481},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.05938148498535156},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/iscas.2003.1204946","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2003.1204946","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03.","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.479.8869","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.479.8869","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://users.rowan.edu/~ravi/conference/conf_2003_04.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W83533993","https://openalex.org/W1534096605","https://openalex.org/W1594165640","https://openalex.org/W2015281559","https://openalex.org/W2057667075","https://openalex.org/W2071467620","https://openalex.org/W2144683622","https://openalex.org/W2320383772","https://openalex.org/W2614283331","https://openalex.org/W2798766386","https://openalex.org/W4235178178","https://openalex.org/W4252390506","https://openalex.org/W6632138476","https://openalex.org/W6750230808"],"related_works":["https://openalex.org/W2046459260","https://openalex.org/W2967463586","https://openalex.org/W2765830098","https://openalex.org/W1971989957","https://openalex.org/W2517338020","https://openalex.org/W3157641275","https://openalex.org/W4312300846","https://openalex.org/W2615757685","https://openalex.org/W2098782634","https://openalex.org/W2108732832"],"abstract_inverted_index":{"Addition":[0],"of":[1,12,19,48,56,66,86,96,113,122,128],"surfactants,":[2],"detergents":[3],"and":[4,39,125,154],"emulsifiers":[5],"has":[6],"been":[7],"successfully":[8],"applied":[9],"for":[10,74,92,103],"cleanup":[11],"petroleum-contaminated":[13],"sites.":[14],"However,":[15,76],"a":[16,71,110,139],"certain":[17],"group":[18],"widely":[20],"used":[21],"alkylphenolethoxylates":[22],"(APEs)":[23],"surfactants":[24],"was":[25],"recently":[26],"banned":[27],"in":[28],"Europe":[29],"because":[30,65],"scientists":[31,64],"discovered":[32],"that":[33,119],"APE":[34],"breakdown":[35,52],"products":[36],"are":[37,131],"estrogenic":[38],"highly":[40],"toxic":[41,51],"to":[42,62,137],"aquatic":[43],"organisms.":[44],"Nonylphenol":[45],"is":[46,59,80,90,107],"one":[47],"the":[49,83,94,120,123,126,151],"very":[50,60,77],"products.":[53],"The":[54],"process":[55],"nonylphenol":[57,104],"biodegradation":[58,84,105,152],"important":[61],"many":[63],"its":[67],"potential":[68],"effectiveness":[69],"as":[70],"treatment":[72],"tool":[73],"pollution.":[75],"little":[78],"information":[79,89],"available":[81],"on":[82,109,158],"kinetics":[85,153],"nonylphenol.":[87],"Kinetic":[88],"necessary":[91],"predicting":[93],"fate":[95],"pollutants.":[97],"We":[98,117],"start":[99],"with":[100],"Monod's":[101,129],"model":[102,130],"which":[106],"based":[108],"coupled":[111],"system":[112,124],"nonlinear":[114,146],"differential":[115],"equations.":[116],"prove":[118],"states":[121],"parameters":[127],"locally":[132],"observable.":[133],"This":[134],"enables":[135],"us":[136],"perform":[138],"meaningful":[140],"parameter":[141],"estimation":[142],"analysis.":[143],"By":[144],"using":[145],"least-squares":[147],"optimization,":[148],"we":[149],"obtain":[150],"verify":[155],"physical":[156],"feasibility":[157],"independent":[159],"datasets.":[160]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
