{"id":"https://openalex.org/W3134351456","doi":"https://doi.org/10.3390/s21051658","title":"Detection of Gadolinium with an Impedimetric Platform Based on Gold Electrodes Functionalized by 2-Methylpyridine-Substituted Cyclam","display_name":"Detection of Gadolinium with an Impedimetric Platform Based on Gold Electrodes Functionalized by 2-Methylpyridine-Substituted Cyclam","publication_year":2021,"publication_date":"2021-02-28","ids":{"openalex":"https://openalex.org/W3134351456","doi":"https://doi.org/10.3390/s21051658","mag":"3134351456","pmid":"https://pubmed.ncbi.nlm.nih.gov/33670860","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/7957611"},"language":"en","primary_location":{"is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21051658","pdf_url":"https://www.mdpi.com/1424-8220/21/5/1658/pdf?version=1614751972","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},"type":"article","type_crossref":"journal-article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/21/5/1658/pdf?version=1614751972","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5007643848","display_name":"Hassen Touzi","orcid":"https://orcid.org/0000-0002-1628-9801"},"institutions":[{"id":"https://openalex.org/I166928557","display_name":"University of Monastir","ror":"https://ror.org/00nhtcg76","country_code":"TN","type":"education","lineage":["https://openalex.org/I166928557"]}],"countries":["TN"],"is_corresponding":false,"raw_author_name":"Hassen Touzi","raw_affiliation_strings":["Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia"],"affiliations":[{"raw_affiliation_string":"Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia","institution_ids":["https://openalex.org/I166928557"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017026095","display_name":"Yves Chevalier","orcid":"https://orcid.org/0000-0002-7526-5658"},"institutions":[{"id":"https://openalex.org/I4210143168","display_name":"Automation and Process Engineering Laboratory","ror":"https://ror.org/03kfjwy31","country_code":"FR","type":"facility","lineage":["https://openalex.org/I100532134","https://openalex.org/I1294671590","https://openalex.org/I203339264","https://openalex.org/I4210095849","https://openalex.org/I4210143168","https://openalex.org/I59692284"]},{"id":"https://openalex.org/I100532134","display_name":"Universit\u00e9 Claude Bernard Lyon 1","ror":"https://ror.org/029brtt94","country_code":"FR","type":"education","lineage":["https://openalex.org/I100532134","https://openalex.org/I203339264"]},{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Yves Chevalier","raw_affiliation_strings":["Laboratory for Process Control, Chemical Engineering and Pharmaceutical Engineering University of Lyon, LAGEPP UMR CNRS 5007, 43 Bd 11 Novembre 1918, 69622 Villeurbanne, France"],"affiliations":[{"raw_affiliation_string":"Laboratory for Process Control, Chemical Engineering and Pharmaceutical Engineering University of Lyon, LAGEPP UMR CNRS 5007, 43 Bd 11 Novembre 1918, 69622 Villeurbanne, France","institution_ids":["https://openalex.org/I4210143168","https://openalex.org/I100532134","https://openalex.org/I1294671590"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076808956","display_name":"Marie Martin","orcid":"https://orcid.org/0000-0002-9904-5465"},"institutions":[{"id":"https://openalex.org/I4210130737","display_name":"Institut des Sciences Analytiques","ror":"https://ror.org/03s5z5x70","country_code":"FR","type":"facility","lineage":["https://openalex.org/I100532134","https://openalex.org/I1294671590","https://openalex.org/I203339264","https://openalex.org/I4210128300","https://openalex.org/I4210130737"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Marie Martin","raw_affiliation_strings":["ISA-Biophysics of complex systems (Institut des Sciences Analytiques (ISA) UMR 5280, 5 rue de la Doua 69100 Villeurbanne - France)"],"affiliations":[{"raw_affiliation_string":"ISA-Biophysics of complex systems (Institut des Sciences Analytiques (ISA) UMR 5280, 5 rue de la Doua 69100 Villeurbanne - France)","institution_ids":["https://openalex.org/I4210130737"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047320623","display_name":"H. Ben Ouada","orcid":"https://orcid.org/0000-0002-8645-2651"},"institutions":[{"id":"https://openalex.org/I166928557","display_name":"University of Monastir","ror":"https://ror.org/00nhtcg76","country_code":"TN","type":"education","lineage":["https://openalex.org/I166928557"]}],"countries":["TN"],"is_corresponding":false,"raw_author_name":"Hafedh Ben Ouada","raw_affiliation_strings":["Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia"],"affiliations":[{"raw_affiliation_string":"Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia","institution_ids":["https://openalex.org/I166928557"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065441900","display_name":"Nicole Jaffr\u00e9zic\u2010Renault","orcid":"https://orcid.org/0000-0003-1354-9273"},"institutions":[{"id":"https://openalex.org/I4210130737","display_name":"Institut des Sciences Analytiques","ror":"https://ror.org/03s5z5x70","country_code":"FR","type":"facility","lineage":["https://openalex.org/I100532134","https://openalex.org/I1294671590","https://openalex.org/I203339264","https://openalex.org/I4210128300","https://openalex.org/I4210130737"]},{"id":"https://openalex.org/I100532134","display_name":"Universit\u00e9 Claude Bernard Lyon 1","ror":"https://ror.org/029brtt94","country_code":"FR","type":"education","lineage":["https://openalex.org/I100532134","https://openalex.org/I203339264"]},{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Nicole Jaffrezic-Renault","raw_affiliation_strings":["Institute of Analytical Sciences, University of Lyon, ISA UMR CNRS 5280, 5 Rue de La Doua, 69100 Villeurbanne, France"],"affiliations":[{"raw_affiliation_string":"Institute of Analytical Sciences, University of Lyon, ISA UMR CNRS 5280, 5 Rue de La Doua, 69100 Villeurbanne, France","institution_ids":["https://openalex.org/I4210130737","https://openalex.org/I100532134","https://openalex.org/I1294671590"]}]}],"institution_assertions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598,"provenance":"doaj"},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598,"provenance":"doaj"},"fwci":1.057,"has_fulltext":true,"fulltext_origin":"pdf","cited_by_count":7,"citation_normalized_percentile":{"value":0.724971,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":84,"max":85},"biblio":{"volume":"21","issue":"5","first_page":"1658","last_page":"1658"},"is_retracted":false,"is_paratext":false,"primary_topic":{"id":"https://openalex.org/T11472","display_name":"Advances in Chemical Sensor Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1502","display_name":"Bioengineering"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11472","display_name":"Advances in Chemical Sensor Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1502","display_name":"Bioengineering"},"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/T11434","display_name":"Electrochemical Detection of Heavy Metal Ions","score":0.9999,"subfield":{"id":"https://openalex.org/subfields/1603","display_name":"Electrochemistry"},"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/T10180","display_name":"Analytical Chemistry Techniques","score":0.9992,"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/cyclam","display_name":"Cyclam","score":0.809155},{"id":"https://openalex.org/keywords/graphene-based-sensors","display_name":"Graphene-Based Sensors","score":0.501185}],"concepts":[{"id":"https://openalex.org/C2776384444","wikidata":"https://www.wikidata.org/wiki/Q1970333","display_name":"Cyclam","level":3,"score":0.809155},{"id":"https://openalex.org/C557651011","wikidata":"https://www.wikidata.org/wiki/Q1832","display_name":"Gadolinium","level":2,"score":0.77541906},{"id":"https://openalex.org/C7040849","wikidata":"https://www.wikidata.org/wiki/Q899580","display_name":"Dielectric spectroscopy","level":4,"score":0.61999536},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.56207764},{"id":"https://openalex.org/C119128265","wikidata":"https://www.wikidata.org/wiki/Q900165","display_name":"Detection limit","level":2,"score":0.5367993},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.50753725},{"id":"https://openalex.org/C17525397","wikidata":"https://www.wikidata.org/wiki/Q176140","display_name":"Electrode","level":2,"score":0.43090212},{"id":"https://openalex.org/C52859227","wikidata":"https://www.wikidata.org/wiki/Q7877","display_name":"Electrochemistry","level":3,"score":0.39496642},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.38565797},{"id":"https://openalex.org/C13965031","wikidata":"https://www.wikidata.org/wiki/Q243545","display_name":"Nuclear chemistry","level":1,"score":0.355363},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.12174478},{"id":"https://openalex.org/C147789679","wikidata":"https://www.wikidata.org/wiki/Q11372","display_name":"Physical chemistry","level":1,"score":0.12087625},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.11991376},{"id":"https://openalex.org/C544153396","wikidata":"https://www.wikidata.org/wiki/Q11426","display_name":"Metal","level":2,"score":0.0}],"mesh":[],"locations_count":7,"locations":[{"is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21051658","pdf_url":"https://www.mdpi.com/1424-8220/21/5/1658/pdf?version=1614751972","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},{"is_oa":true,"landing_page_url":"https://hal.science/hal-03318450","pdf_url":"https://hal.science/hal-03318450/document","source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"host_organization_lineage_names":["Centre National de la Recherche Scientifique"],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true},{"is_oa":false,"landing_page_url":"https://doaj.org/article/a1ad000b5b824df591409caf4e24610e","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":true,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},{"is_oa":true,"landing_page_url":"https://hal.science/hal-03318450/file/Sensors_2021_21_1658.pdf","pdf_url":"https://hal.science/hal-03318450/file/Sensors_2021_21_1658.pdf","source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"host_organization_lineage_names":["Centre National de la Recherche Scientifique"],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true},{"is_oa":true,"landing_page_url":"https://hal.archives-ouvertes.fr/hal-03318450/file/Sensors_2021_21_1658.pdf","pdf_url":"https://hal.archives-ouvertes.fr/hal-03318450/file/Sensors_2021_21_1658.pdf","source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"host_organization_lineage_names":["Centre National de la Recherche Scientifique"],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true},{"is_oa":true,"landing_page_url":"https://hal.archives-ouvertes.fr/hal-03318450/document","pdf_url":"https://hal.archives-ouvertes.fr/hal-03318450/document","source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"host_organization_lineage_names":["Centre National de la Recherche Scientifique"],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true},{"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7957611","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":["National Institutes of Health"],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true}],"best_oa_location":{"is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21051658","pdf_url":"https://www.mdpi.com/1424-8220/21/5/1658/pdf?version=1614751972","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},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/6","score":0.46,"display_name":"Clean water and sanitation"}],"grants":[{"funder":"https://openalex.org/F4320322892","funder_display_name":"Centre National de la Recherche Scientifique","award_id":"PICS 2017-2020 # 226221."}],"datasets":[],"versions":[],"referenced_works_count":47,"referenced_works":["https://openalex.org/W1414180110","https://openalex.org/W1487725689","https://openalex.org/W1973618161","https://openalex.org/W1984177984","https://openalex.org/W1989180387","https://openalex.org/W1993538491","https://openalex.org/W1996614923","https://openalex.org/W2000041533","https://openalex.org/W2007552940","https://openalex.org/W2009769640","https://openalex.org/W2018649242","https://openalex.org/W2026742886","https://openalex.org/W2028511890","https://openalex.org/W2030752967","https://openalex.org/W2043089755","https://openalex.org/W2047694003","https://openalex.org/W2056321700","https://openalex.org/W2056482610","https://openalex.org/W2067487848","https://openalex.org/W2069462588","https://openalex.org/W2071680282","https://openalex.org/W2090827050","https://openalex.org/W2092701781","https://openalex.org/W2096106327","https://openalex.org/W2100043390","https://openalex.org/W2107019704","https://openalex.org/W2127146512","https://openalex.org/W2153545079","https://openalex.org/W2160361919","https://openalex.org/W2240059537","https://openalex.org/W2506815165","https://openalex.org/W2557679475","https://openalex.org/W2574338187","https://openalex.org/W2624408335","https://openalex.org/W2738420865","https://openalex.org/W2775426387","https://openalex.org/W2792941688","https://openalex.org/W2888209261","https://openalex.org/W2891735146","https://openalex.org/W2917816647","https://openalex.org/W2983964254","https://openalex.org/W3112594662","https://openalex.org/W4382022072","https://openalex.org/W4382063494","https://openalex.org/W4382140771","https://openalex.org/W4382585381","https://openalex.org/W803982193"],"related_works":["https://openalex.org/W4243950461","https://openalex.org/W4236489479","https://openalex.org/W3034299122","https://openalex.org/W2914590470","https://openalex.org/W2299072154","https://openalex.org/W2094850033","https://openalex.org/W2060313406","https://openalex.org/W2008200154","https://openalex.org/W1981550196","https://openalex.org/W1965473697"],"abstract_inverted_index":{"Gadolinium":[0],"is":[1,7,14,154,183],"extensively":[2],"used":[3],"in":[4,47,89,108,133,198],"pharmaceuticals":[5],"and":[6,70,98,140,171],"very":[8],"toxic,":[9],"so":[10],"its":[11,59,141],"sensitive":[12],"detection":[13,180,195],"mandatory.":[15],"This":[16],"work":[17],"presents":[18],"the":[19,51,56,63,109,137,144,155,158,164,169,172,179,194],"elaboration":[20],"of":[21,53,58,77,86,111,114,157,166,196],"a":[22],"gadolinium":[23,152,197],"chemical":[24,104],"sensor":[25,105],"based":[26],"on":[27,33,79,176],"2-methylpyridine-substituted":[28,42],"cyclam":[29,43,54],"thin":[30,75],"films,":[31],"deposited":[32],"gold":[34,80,189],"electrodes,":[35],"using":[36],"electrochemical":[37],"impedance":[38],"spectroscopy":[39,88],"(EIS).":[40],"The":[41,102,146,186],"(bis-N-MPyC)":[44],"was":[45,65,106,191],"synthesized":[46],"three":[48],"steps,":[49],"including":[50,129],"protection":[52],"by":[55,67,84],"formation":[57],"CH2-bridged":[60],"aminal":[61],"derivative;":[62],"product":[64],"characterized":[66,83],"liquid":[68],"1H":[69],"13C":[71],"NMR":[72],"spectroscopy.":[73],"Spin-coated":[74],"films":[76],"bis-N-MPyC":[78,138,187],"wafers":[81],"were":[82,122],"means":[85],"infrared":[87],"ATR":[90],"(Attenuated":[91],"Total":[92],"Reflectance)":[93],"mode,":[94],"contact":[95],"angle":[96],"measurements":[97],"atomic":[99],"force":[100],"microscopy.":[101],"impedimetric":[103],"studied":[107],"presence":[110],"increasing":[112],"concentrations":[113],"lanthanides":[115],"(Gd3+,":[116],"Eu3+,":[117],"Tb3+,":[118],"Dy3+).":[119],"Nyquist":[120],"plots":[121],"fitted":[123],"with":[124,143,151],"an":[125],"equivalent":[126],"electrical":[127],"circuit":[128],"two":[130],"RC":[131],"circuits":[132],"series":[134],"corresponding":[135],"to":[136,163],"film":[139],"interface":[142,160],"electrolyte.":[145],"main":[147],"parameter":[148],"that":[149],"varies":[150],"concentration":[153],"resistance":[156],"film/electrolyte":[159],"(Rp),":[161],"correlated":[162],"rate":[165],"exchange":[167],"between":[168],"proton":[170],"lanthanide":[173],"ion.":[174],"Based":[175],"this":[177],"parameter,":[178],"limit":[181],"obtained":[182],"35":[184],"pM.":[185],"modified":[188],"electrode":[190],"tested":[192],"for":[193],"spiked":[199],"diluted":[200],"negative":[201],"urine":[202],"control":[203],"samples.":[204]},"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W3134351456","counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":1}],"updated_date":"2024-09-30T21:03:25.908191","created_date":"2021-03-15"}