{"id":"https://openalex.org/W7119300643","doi":null,"title":"Development of a LED-Vis photometer with a portable and Arduino microcontroller","display_name":"Development of a LED-Vis photometer with a portable and Arduino microcontroller","publication_year":2014,"publication_date":"2014-04-28","ids":{"openalex":"https://openalex.org/W7119300643"},"language":"pt","primary_location":{"id":"pmh:oai:repositorio.ufpb.br:tede/7136","doi":null,"is_oa":true,"landing_page_url":"https://repositorio.ufpb.br/jspui/handle/tede/7136","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"instacron:UFPB","raw_type":"info:eu-repo/semantics/masterThesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://repositorio.ufpb.br/jspui/handle/tede/7136","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5113809116","display_name":"Aline Santos de Pontes","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Pontes, Aline Santos de","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5113809116"],"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":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":0.3167000114917755,"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"}},"topics":[{"id":"https://openalex.org/T11472","display_name":"Analytical Chemistry and Sensors","score":0.3167000114917755,"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"}},{"id":"https://openalex.org/T12327","display_name":"Various Chemistry Research Topics","score":0.2838999927043915,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10640","display_name":"Spectroscopy and Chemometric Analyses","score":0.08730000257492065,"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/phototransistor","display_name":"phototransistor","score":0.8799999952316284},{"id":"https://openalex.org/keywords/arduino","display_name":"Arduino","score":0.9860000014305115},{"id":"https://openalex.org/keywords/low-cost-instrumentation","display_name":"low-cost instrumentation","score":0.7979999780654907},{"id":"https://openalex.org/keywords/portable-spectrophotometer","display_name":"portable spectrophotometer","score":0.7699999809265137},{"id":"https://openalex.org/keywords/potassium-permanganate","display_name":"potassium permanganate","score":0.8309999704360962},{"id":"https://openalex.org/keywords/energy-drinks","display_name":"energy drinks","score":0.7950000166893005},{"id":"https://openalex.org/keywords/soft-drinks","display_name":"soft drinks","score":0.9039999842643738},{"id":"https://openalex.org/keywords/food-dye-analysis","display_name":"food dye analysis","score":0.5320000052452087},{"id":"https://openalex.org/keywords/teaching-laboratory","display_name":"teaching laboratory","score":0.5070000290870667}],"concepts":[{"id":"https://openalex.org/C11494860","wikidata":"https://www.wikidata.org/wiki/Q690868","display_name":"Photometer","level":2,"score":0.9168999791145325},{"id":"https://openalex.org/C751236","wikidata":"https://www.wikidata.org/wiki/Q175943","display_name":"Photodiode","level":2,"score":0.694100022315979},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.6503000259399414},{"id":"https://openalex.org/C173018170","wikidata":"https://www.wikidata.org/wiki/Q165678","display_name":"Microcontroller","level":2,"score":0.45980000495910645},{"id":"https://openalex.org/C10390740","wikidata":"https://www.wikidata.org/wiki/Q2282401","display_name":"Analyte","level":2,"score":0.43689998984336853},{"id":"https://openalex.org/C176666156","wikidata":"https://www.wikidata.org/wiki/Q25504","display_name":"Light-emitting diode","level":2,"score":0.4293000102043152},{"id":"https://openalex.org/C23531484","wikidata":"https://www.wikidata.org/wiki/Q3196863","display_name":"Calibration curve","level":3,"score":0.4097000062465668},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.384799987077713},{"id":"https://openalex.org/C2778720773","wikidata":"https://www.wikidata.org/wiki/Q1038481","display_name":"Sun photometer","level":3,"score":0.38179999589920044},{"id":"https://openalex.org/C78434282","wikidata":"https://www.wikidata.org/wiki/Q11656","display_name":"Diode","level":2,"score":0.3643999993801117},{"id":"https://openalex.org/C118530786","wikidata":"https://www.wikidata.org/wiki/Q1134732","display_name":"Instrumentation (computer programming)","level":2,"score":0.3603000044822693},{"id":"https://openalex.org/C21200559","wikidata":"https://www.wikidata.org/wiki/Q7451068","display_name":"Sensitivity (control systems)","level":2,"score":0.358599990606308},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.35749998688697815},{"id":"https://openalex.org/C199051819","wikidata":"https://www.wikidata.org/wiki/Q194120","display_name":"Photoresistor","level":2,"score":0.3474999964237213},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.34630000591278076},{"id":"https://openalex.org/C60548495","wikidata":"https://www.wikidata.org/wiki/Q7575205","display_name":"Spectral sensitivity","level":3,"score":0.3395000100135803},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3368000090122223},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.33559998869895935},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.329800009727478},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.3296000063419342},{"id":"https://openalex.org/C22679943","wikidata":"https://www.wikidata.org/wiki/Q159375","display_name":"Standard deviation","level":2,"score":0.3287999927997589},{"id":"https://openalex.org/C51989270","wikidata":"https://www.wikidata.org/wiki/Q623738","display_name":"Relative standard deviation","level":3,"score":0.32710000872612},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3075999915599823},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.29789999127388},{"id":"https://openalex.org/C62646347","wikidata":"https://www.wikidata.org/wiki/Q2041172","display_name":"Measuring instrument","level":2,"score":0.2930000126361847},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.27959999442100525},{"id":"https://openalex.org/C46423501","wikidata":"https://www.wikidata.org/wiki/Q830654","display_name":"Irradiance","level":2,"score":0.2522999942302704}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:repositorio.ufpb.br:tede/7136","doi":null,"is_oa":true,"landing_page_url":"https://repositorio.ufpb.br/jspui/handle/tede/7136","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"instacron:UFPB","raw_type":"info:eu-repo/semantics/masterThesis"}],"best_oa_location":{"id":"pmh:oai:repositorio.ufpb.br:tede/7136","doi":null,"is_oa":true,"landing_page_url":"https://repositorio.ufpb.br/jspui/handle/tede/7136","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"instacron:UFPB","raw_type":"info:eu-repo/semantics/masterThesis"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W7046330572","https://openalex.org/W6990374442","https://openalex.org/W2783579629","https://openalex.org/W1990583012","https://openalex.org/W2734474206","https://openalex.org/W4385260507","https://openalex.org/W4306769503","https://openalex.org/W4410550921","https://openalex.org/W2025425765","https://openalex.org/W2092911481"],"abstract_inverted_index":{"A":[0],"portable":[1],"and":[2,32,86,88,154,161],"low-cost":[3],"photometer":[4,166],"is":[5],"proposed":[6,165],"in":[7,23,43,83,177,186],"this":[8],"work.":[9],"The":[10,74,164],"instrument":[11,75],"uses":[12],"a":[13,38,95,114],"tri-color":[14],"light":[15],"emitting":[16],"diode":[17],"(LED)":[18],"as":[19,47,49,143],"its":[20],"radiation":[21],"source":[22],"maximum":[24],"emission":[25],"wavelengths":[26],"of":[27,60,71,152],"480":[28],"(blue),":[29],"534":[30],"(green)":[31],"630":[33],"nm":[34],"(red).":[35],"It":[36],"employs":[37],"phototransistor":[39],"with":[40,124,180],"spectral":[41],"sensitivity":[42],"the":[44,102,106,110,120,125,141,146,159,162],"visible":[45],"region,":[46],"well":[48],"an":[50,169],"Arduino":[51],"microcontroller.":[52],"Its":[53],"analytical":[54],"performance":[55],"was":[56,76,98],"evaluated":[57],"by":[58,69,145],"means":[59],"quantitative":[61],"analysis":[62,70],"(analytical":[63],"curves),":[64],"whose":[65],"models":[66],"were":[67,138],"validated":[68],"variance":[72],"(ANOVA).":[73],"applied":[77],"to":[78,100,173],"determine":[79],"sunset":[80],"yellow":[81],"dye":[82,160],"energy":[84],"drinks":[85],"sodas,":[87],"potassium":[89],"permanganate":[90],"pills.":[91],"For":[92],"comparison":[93],"purposes,":[94],"commercial":[96],"spectrophotometer":[97],"used":[99],"construct":[101],"calibration":[103],"curves":[104],"for":[105,119,140,157],"reference":[107],"method.":[108],"Applying":[109],"paired":[111],"t-test":[112],"at":[113],"95":[115],"%":[116],"confidence":[117],"level":[118],"concentration":[121,136],"results":[122],"obtained":[123,139],"two":[126],"instruments,":[127],"we":[128],"observed":[129],"no":[130],"statistically":[131],"significant":[132],"difference.":[133],"Furthermore,":[134],"accurate":[135],"estimates":[137],"analytes":[142],"confirmed":[144],"low":[147],"relative":[148],"standard":[149],"deviation":[150],"range":[151],"0.2":[153],"0.5%,":[155],"respectively,":[156],"both":[158],"permanganate.":[163],"might":[167],"be":[168],"economically":[170],"viable":[171],"alternative":[172],"spectroscopic":[174],"analysis,":[175],"especially":[176],"teaching":[178],"laboratories":[179],"limited":[181],"financial":[182],"resources":[183],"or":[184],"lacking":[185],"highly":[187],"qualified":[188],"personnel.":[189]},"counts_by_year":[],"updated_date":"2026-09-25T08:18:29.962427","created_date":"2026-01-08T00:00:00"}