{"id":"https://openalex.org/W1991612408","doi":"https://doi.org/10.3390/s120202340","title":"NIR Monitoring of Ammonia in Anaerobic Digesters Using a Diffuse Reflectance Probe","display_name":"NIR Monitoring of Ammonia in Anaerobic Digesters Using a Diffuse Reflectance Probe","publication_year":2012,"publication_date":"2012-02-21","ids":{"openalex":"https://openalex.org/W1991612408","doi":"https://doi.org/10.3390/s120202340","mag":"1991612408","pmid":"https://pubmed.ncbi.nlm.nih.gov/22438767"},"language":"en","primary_location":{"id":"doi:10.3390/s120202340","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s120202340","pdf_url":"https://www.mdpi.com/1424-8220/12/2/2340/pdf?version=1403317146","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/12/2/2340/pdf?version=1403317146","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5022398850","display_name":"Chitra Sangaraju Raju","orcid":null},"institutions":[{"id":"https://openalex.org/I204337017","display_name":"Aarhus University","ror":"https://ror.org/01aj84f44","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]}],"countries":["DK"],"is_corresponding":true,"raw_author_name":"Chitra S. Raju","raw_affiliation_strings":["Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark","institution_ids":["https://openalex.org/I204337017"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036238635","display_name":"Mette Marie L\u00f8kke","orcid":null},"institutions":[{"id":"https://openalex.org/I204337017","display_name":"Aarhus University","ror":"https://ror.org/01aj84f44","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Mette Marie L\u00f8kke","raw_affiliation_strings":["Department of Food Science, Aarhus University, Kirstinebjergvej 10, \u00c5rslev DK 5792, Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Food Science, Aarhus University, Kirstinebjergvej 10, \u00c5rslev DK 5792, Denmark","institution_ids":["https://openalex.org/I204337017"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067479388","display_name":"Sutaryo Sutaryo","orcid":"https://orcid.org/0000-0002-9037-7391"},"institutions":[{"id":"https://openalex.org/I204337017","display_name":"Aarhus University","ror":"https://ror.org/01aj84f44","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Sutaryo Sutaryo","raw_affiliation_strings":["Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark","institution_ids":["https://openalex.org/I204337017"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023027185","display_name":"Alastair James Ward","orcid":"https://orcid.org/0000-0002-4386-6600"},"institutions":[{"id":"https://openalex.org/I204337017","display_name":"Aarhus University","ror":"https://ror.org/01aj84f44","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Alastair J. Ward","raw_affiliation_strings":["Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark","institution_ids":["https://openalex.org/I204337017"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5010992813","display_name":"Henrik Bjarne M\u00f8ller","orcid":"https://orcid.org/0000-0002-2272-1867"},"institutions":[{"id":"https://openalex.org/I204337017","display_name":"Aarhus University","ror":"https://ror.org/01aj84f44","country_code":"DK","type":"education","lineage":["https://openalex.org/I204337017"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Henrik B. M\u00f8ller","raw_affiliation_strings":["Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Engineering, Aarhus University, Blichers All\u00e9 20, Tjele DK 8830, Denmark","institution_ids":["https://openalex.org/I204337017"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5022398850"],"corresponding_institution_ids":["https://openalex.org/I204337017"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598},"fwci":1.7118,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.85552738,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"12","issue":"2","first_page":"2340","last_page":"2350"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T14249","display_name":"Water Quality Monitoring and Analysis","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Industrial and Manufacturing Engineering"},"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/T14249","display_name":"Water Quality Monitoring and Analysis","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Industrial and Manufacturing 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/T11667","display_name":"Advanced Chemical Sensor Technologies","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T10640","display_name":"Spectroscopy and Chemometric Analyses","score":0.9914000034332275,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/reflectivity","display_name":"Reflectivity","score":0.6227190494537354},{"id":"https://openalex.org/keywords/ammonia","display_name":"Ammonia","score":0.5903832912445068},{"id":"https://openalex.org/keywords/anaerobic-exercise","display_name":"Anaerobic exercise","score":0.5810590982437134},{"id":"https://openalex.org/keywords/environmental-chemistry","display_name":"Environmental chemistry","score":0.5362882614135742},{"id":"https://openalex.org/keywords/diffuse-reflection","display_name":"Diffuse reflection","score":0.5260376930236816},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5131557583808899},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.38874539732933044},{"id":"https://openalex.org/keywords/waste-management","display_name":"Waste management","score":0.3742949962615967},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.35343998670578003},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.14223608374595642},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.12479531764984131},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.0949866771697998},{"id":"https://openalex.org/keywords/biology","display_name":"Biology","score":0.08085450530052185},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06944707036018372}],"concepts":[{"id":"https://openalex.org/C108597893","wikidata":"https://www.wikidata.org/wiki/Q663650","display_name":"Reflectivity","level":2,"score":0.6227190494537354},{"id":"https://openalex.org/C2776382133","wikidata":"https://www.wikidata.org/wiki/Q4087","display_name":"Ammonia","level":2,"score":0.5903832912445068},{"id":"https://openalex.org/C5140985","wikidata":"https://www.wikidata.org/wiki/Q483866","display_name":"Anaerobic exercise","level":2,"score":0.5810590982437134},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.5362882614135742},{"id":"https://openalex.org/C82261727","wikidata":"https://www.wikidata.org/wiki/Q1154504","display_name":"Diffuse reflection","level":2,"score":0.5260376930236816},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5131557583808899},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.38874539732933044},{"id":"https://openalex.org/C548081761","wikidata":"https://www.wikidata.org/wiki/Q180388","display_name":"Waste management","level":1,"score":0.3742949962615967},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.35343998670578003},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.14223608374595642},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.12479531764984131},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0949866771697998},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.08085450530052185},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06944707036018372},{"id":"https://openalex.org/C42407357","wikidata":"https://www.wikidata.org/wiki/Q521","display_name":"Physiology","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000641","descriptor_name":"Ammonia","qualifier_ui":"Q000032","qualifier_name":"analysis","is_major_topic":false},{"descriptor_ui":"D000641","descriptor_name":"Ammonia","qualifier_ui":"Q000032","qualifier_name":"analysis","is_major_topic":false},{"descriptor_ui":"D000641","descriptor_name":"Ammonia","qualifier_ui":"Q000032","qualifier_name":"analysis","is_major_topic":false},{"descriptor_ui":"D001421","descriptor_name":"Bacteria, Anaerobic","qualifier_ui":"Q000378","qualifier_name":"metabolism","is_major_topic":false},{"descriptor_ui":"D001421","descriptor_name":"Bacteria, Anaerobic","qualifier_ui":"Q000378","qualifier_name":"metabolism","is_major_topic":false},{"descriptor_ui":"D001421","descriptor_name":"Bacteria, Anaerobic","qualifier_ui":"Q000378","qualifier_name":"metabolism","is_major_topic":false},{"descriptor_ui":"D004867","descriptor_name":"Equipment Design","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004867","descriptor_name":"Equipment Design","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004867","descriptor_name":"Equipment Design","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010783","descriptor_name":"Photometry","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D010783","descriptor_name":"Photometry","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D010783","descriptor_name":"Photometry","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D014159","descriptor_name":"Transducers","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014159","descriptor_name":"Transducers","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014159","descriptor_name":"Transducers","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D015374","descriptor_name":"Biosensing Techniques","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D015374","descriptor_name":"Biosensing Techniques","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D015374","descriptor_name":"Biosensing Techniques","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D019149","descriptor_name":"Bioreactors","qualifier_ui":"Q000382","qualifier_name":"microbiology","is_major_topic":false},{"descriptor_ui":"D019149","descriptor_name":"Bioreactors","qualifier_ui":"Q000382","qualifier_name":"microbiology","is_major_topic":false},{"descriptor_ui":"D019149","descriptor_name":"Bioreactors","qualifier_ui":"Q000382","qualifier_name":"microbiology","is_major_topic":false},{"descriptor_ui":"D019265","descriptor_name":"Spectroscopy, Near-Infrared","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D019265","descriptor_name":"Spectroscopy, Near-Infrared","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D019265","descriptor_name":"Spectroscopy, Near-Infrared","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D019544","descriptor_name":"Equipment Failure Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D019544","descriptor_name":"Equipment Failure Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D019544","descriptor_name":"Equipment Failure Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":7,"locations":[{"id":"doi:10.3390/s120202340","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s120202340","pdf_url":"https://www.mdpi.com/1424-8220/12/2/2340/pdf?version=1403317146","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:22438767","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/22438767","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.394.3745","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.394.3745","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.mdpi.com/1424-8220/12/2/2340/pdf/","raw_type":"text"},{"id":"pmh:oai:doaj.org/article:f90d8c32c94b4c2f91a23dc11628c775","is_oa":true,"landing_page_url":"https://doaj.org/article/f90d8c32c94b4c2f91a23dc11628c775","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 12, Iss 2, Pp 2340-2350 (2012)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1424-8220/12/2/2340/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/s120202340","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors; Volume 12; Issue 2; Pages: 2340-2350","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:3304169","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/3304169","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"},{"id":"pmh:oai:pure.atira.dk:publications/8806570f-cca4-41c8-a99f-e64594c9c24d","is_oa":false,"landing_page_url":"https://pure.au.dk/portal/en/publications/8806570f-cca4-41c8-a99f-e64594c9c24d","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Raju, C S, L\u00f8kke, M M, Sutaryo, S, Ward, A J & M\u00f8ller, H B 2012, 'NIR monitoring of ammonia in anaerobic digesters using a diffuse reflectance probe', Sensors, vol. 12, no. 2, pp. 2340-2350. https://doi.org/10.3390/s120202340","raw_type":"info:eu-repo/semantics/publishedVersion"}],"best_oa_location":{"id":"doi:10.3390/s120202340","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s120202340","pdf_url":"https://www.mdpi.com/1424-8220/12/2/2340/pdf?version=1403317146","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Clean water and sanitation","score":0.6800000071525574,"id":"https://metadata.un.org/sdg/6"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W1991612408.pdf","grobid_xml":"https://content.openalex.org/works/W1991612408.grobid-xml"},"referenced_works_count":20,"referenced_works":["https://openalex.org/W1480175919","https://openalex.org/W1809141522","https://openalex.org/W1821319197","https://openalex.org/W1965537689","https://openalex.org/W1973013768","https://openalex.org/W1974553170","https://openalex.org/W1995843625","https://openalex.org/W2007808016","https://openalex.org/W2012358846","https://openalex.org/W2016090370","https://openalex.org/W2054846840","https://openalex.org/W2067145094","https://openalex.org/W2069958309","https://openalex.org/W2073503722","https://openalex.org/W2089848749","https://openalex.org/W2128680605","https://openalex.org/W2138780420","https://openalex.org/W2166785216","https://openalex.org/W2308337404","https://openalex.org/W2621594323"],"related_works":["https://openalex.org/W2002983552","https://openalex.org/W1991602237","https://openalex.org/W2741373531","https://openalex.org/W2037556522","https://openalex.org/W2382087209","https://openalex.org/W2020558783","https://openalex.org/W166012054","https://openalex.org/W2127527588","https://openalex.org/W2344944329","https://openalex.org/W2070816476"],"abstract_inverted_index":{"The":[0,78],"feasibility":[1],"of":[2,86,93,98],"using":[3],"a":[4,10,33],"diffuse":[5],"reflectance":[6],"probe":[7,40,105],"attached":[8,44],"to":[9,14,45,66,74,88],"near":[11],"infrared":[12],"spectrometer":[13],"monitor":[15],"the":[16,76,84,104],"total":[17],"ammonia":[18],"nitrogen":[19],"(TAN)":[20],"content":[21],"in":[22,83],"an":[23,46,96],"anaerobic":[24,47],"digester":[25],"run":[26],"on":[27],"cattle":[28],"manure":[29],"was":[30,100],"investigated;":[31],"as":[32,53],"previous":[34],"study":[35],"has":[36],"indicated":[37],"that":[38,103],"this":[39],"can":[41],"be":[42,107],"easily":[43],"digester.":[48],"Multivariate":[49],"modelling":[50],"techniques":[51],"such":[52],"partial":[54,60],"least":[55,61],"squares":[56,62],"regression":[57],"and":[58,111],"interval":[59],"methods":[63],"were":[64,72,82],"used":[65,108],"build":[67],"models.":[68,77],"Various":[69],"data":[70],"pre-treatments":[71],"applied":[73],"improve":[75],"TAN":[79],"concentrations":[80],"measured":[81],"range":[85],"1.5":[87],"5.5":[89],"g/L.":[90],"An":[91],"R(2)":[92],"0.91":[94],"with":[95],"RMSEP":[97],"0.32":[99],"obtained":[101],"implying":[102],"could":[106],"for":[109],"monitoring":[110],"screening":[112],"purposes.":[113]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2022,"cited_by_count":3},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":3},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}