Výsledky vyhledávání - "Letícia Ramos Nacano"

Dissertation/ Thesis

Avaliação da concentração de elementos químicos tóxicos na merenda escolar de crianças da cidade de Ribeirão Preto e estimativa de suas ingestões diárias

Autor: Letícia Ramos Nacano

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

A contaminação do ambiente por elementos químicos é um problema crescente em várias regiões do planeta. Muitos destes elementos químicos, que incluem o Cd, Pb e As são tóxicos aos humanos.De acordo com os órgãos de saúde como a Organizaç

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/60/60134/tde-30102012-102601/

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The Use of Decision Trees and Naïve Bayes Algorithms and Trace Element Patterns for Controlling the Authenticity of Free-Range-Pastured Hens’ Eggs

Autor: Rommel Melgaço Barbosa, Fernando Barbosa, Letícia Ramos Nacano, Rodolfo de Freitas, Bruno Lemos Batista

Publikováno v: Journal of Food Science. 79:C1672-C1677

This article aims to evaluate 2 machine learning algorithms, decision trees and naive Bayes (NB), for egg classification (free-range eggs compared with battery eggs). The database used for the study consisted of 15 chemical elements (As, Ba, Cd, Co,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05475991763523a2cdf4f585784de75b
https://doi.org/10.1111/1750-3841.12577

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Rapid sample preparation procedure for As speciation in food samples by LC-ICP-MS

Autor: S. S. De Souza, Bruno Lemos Batista, Letícia Ramos Nacano, Fernando Barbosa

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

This paper describes a rapid method for arsenic (As) speciation by LC-ICP-MS in several types of food samples. Prior to analysis, samples were milled and the As species extracted from biological tissues by sonication in only 2 min with a solution con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f58dd2b4ee7e2f2730a98c3e4fce863a
https://doi.org/10.1080/19440049.2011.645218

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Preconcentration/Cleanup Studies of Tin from Environmental Water Samples by Oxidized Multiwall Carbon Nanotubes Packed Column and its Determination by ETAAS

Autor: Letícia Ramos Nacano, César Ricardo Teixeira Tarley, Giovana de Fátima Lima, Heloisa Helena Vilela Costa

Publikováno v: Water, Air, & Soil Pollution. 217:557-565

The use of multiwall carbon nanotubes (MWCNT) as an efficient solid extractor in preconcentration/cleanup studies for tin determination in water samples by electrothermal atomic absorption spectrometry (ETAAS) is proposed. In the proposed method, tin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::207dd966993164b283205b505b67b5ef
https://doi.org/10.1007/s11270-010-0609-4

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Avaliação da concentração de elementos químicos tóxicos na merenda escolar de crianças da cidade de Ribeirão Preto e estimativa de suas ingestões diárias

Autor: Letícia Ramos Nacano

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec2eb5181432e1544c69ac4bbda5bd2b
https://doi.org/10.11606/d.60.2012.tde-30102012-102601

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Evaluation of seasonal dietary exposure to arsenic, cadmium and lead in schoolchildren through the analysis of meals served by public schools of Ribeirão Preto, Brazil

Autor: Letícia Ramos Nacano, Rodolfo de Freitas, Fernando Barbosa

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Dietary exposure to arsenic (AS), cadmium (Cd), and lead (Pb) of Brazilian schoolchildren living in Ribeirao Preto, Brazil, was assessed. Food samples including rice, beans, vegetables, fruits, and meat served daily by public schools were collected a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a9970ab04739b469aa3f398037e909e
https://pubmed.ncbi.nlm.nih.gov/24617541

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Determination of essential (Ca, Fe, I, K, Mo) and toxic elements (Hg, Pb) in Brazilian rice grains and estimation of reference daily intake

Autor: Letícia Ramos Nacano, Rodolfo de Freitas, Vanessa C. de Oliveira-Souza, Bruno Lemos Batista, Fernando Barbosa

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The levels of Hg and Pb (toxic elements) and Ca, Fe, I, K, Mo (essential elements) were measured in 44 Brazilian rice samples divided among white polished (W), parboiled white (PW) and parboiled brown (PB). Rice grains were ana- lyzed by inductively

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ab35b0d072e26c8199a4402135fb40

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