Ers
Mostrando 1-12 de 238 artigos, teses e dissertações.
-
1. Determination of Ethyl Carbamate in Commercial Sweetened Sugar Cane Spirit by ESI-MS/MS Using Modified QuEChERS and 18-Crown-6/Trifluoroacetic Acid Spiking Additives
A fast, sensitive, and selective direct injection electrospray tandem mass spectrometry (DI ESI MS/MS) method that is able to quantify ethyl carbamate in commercial sweetened sugar cane spirit is described. The preparation method uses a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) with potassium carbonate added to sweetened sugar cane
Journal of the Brazilian Chemical Society. Publicado em: 2022
-
2. [Moringa oleifera: um ingrediente alternativo na melhora da qualidade de ovos de codornas japonesas]
RESUMO O objetivo deste estudo foi avaliar a inclusão de Moringa oleifera na dieta de codornas japonesas sobre o desempenho, a qualidade de ovos, os parâmetros sanguíneos, o perfil bioquímico e o comportamento. Foram utilizadas 144 codornas japonesas, com aproximadamente 35 dias de idade, as quais foram distribuídas em delineamento inteiramente ao acaso
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2021-05
-
3. Validation of an UHPLC-MS/MS Method for the Determination of Malachite Green, Leucomalachite Green, Crystal Violet, and Leucocrystal Violet in Shrimp, Fish, and Salmon Muscle Using a Modified QuEChERS Approach
A quantitative and confirmatory method for detecting the presence of triphenylmethane dyes in shrimp muscle using ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) and a quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction approach was validated. The method exhibited linearity and selectivity and the coeffici
J. Braz. Chem. Soc.. Publicado em: 2021-04
-
4. Identification of Potential Human Protein Targets for Soybean Isoflavones
Soy isoflavones have been reported as endocrine disruptors due to their ability to modulate the activity of estrogen receptors (ERs) in mammals; however, its ability to modulate other metabolic pathways is not entirely clear, which makes it necessary to identify new pharmacological targets that interact with these compounds present in soybean. In this work,
J. Braz. Chem. Soc.. Publicado em: 2021-04
-
5. Estruturas recíprocas: revisão sistemática da literatura e identificação de pontos críticos para projeto e produção
Resumo Estruturas recíprocas (ERs) são datadas do período neolítico, produzidas originalmente em madeira e compostas por elementos de dimensões reduzidas. Trata-se de um sistema estrutural que apresenta a capacidade de se adaptar a formas livres, complexas e com grande potencial estético, como indicado por diversas pesquisas contemporâneas. No entanto
Ambient. constr.. Publicado em: 2020-12
-
6. Optimization and Validation of LLE-LTP and QuEChERS Methodologies for Determining 2,4-D in Water Samples
2,4-Dichlorophenoxyacetic acid (2,4-D) has been one of the main herbicides used to control weeds, however, due to its high use it can promote episodes of environmental contamination. Therefore, this study aimed to optimize and validate the liquid-liquid extraction with low-temperature partition (LLE-LTP) and the quick, easy, cheap, effective, rugged, and saf
J. Braz. Chem. Soc.. Publicado em: 2020-09
-
7. A SALTING-OUT ASSISTED LIQUID-LIQUID EXTRACTION FOR THE DETERMINATION OF TEBUCONAZOLE, CARBOFURAN AND IMIDACLOPRID IN WHITE AND ROSÉ WINES
Food safety is a constant and necessary concern due to the worldwide increase of the food demand. The monitoring of quality parameters demands the development of accurate, easy and fast procedures. The aim of this work was to develop a cheap, miniaturized and trustworthy salting-out assisted liquid-liquid extraction (SALLE) procedure for the determination of
Quím. Nova. Publicado em: 20/07/2020
-
8. DETERMINAÇÃO DE MULTIRRESÍDUOS DE AGROTÓXICOS EM MÉIS PRODUZIDOS NA REGIÃO DO TRIÂNGULO MINEIRO POR UHPLC-MS/MS
Excessive use of pesticides can lead to the accumulation of residues in different parts of plants, endangering various species and contaminating foods. Honey can be used as an indicator of agricultural contamination and pre-mature bee mortality by pesticides. However, to quantify pesticide residues in honey, high sensitivity analytical methodologies are requ
Quím. Nova. Publicado em: 2020-03
-
9. OTIMIZAÇÃO E VALIDAÇÃO DE MÉTODO BASEADO EM QuEChERS PARA DETERMINAÇÃO DE CONSERVANTES EM COSMÉTICOS POR HPLC-DAD
Parabens are widely used as preservatives in the last decades. Others preservatives such as 2-phenoxyethanol, which in addition to his good antimicrobial activity, has low allergenic potential as well others properties of interest to the cosmetic industry. In this work was developed a method for determination of methylparaben (MP), propylparaben (PP) and 2-p
Quím. Nova. Publicado em: 2020-02
-
10. Influence of the mode of application of universal adhesive systems on adhesive properties to fluorotic enamel
Abstract The objective of this study is to compare the resin-enamel bond strength (mμSBS), in-situ degree of conversion (DC), and the enamel-etching pattern (SEM/EDX) of universal adhesive systems when applied to sound and fluorotic enamel. Ninety-eight human molars were sectioned into 4 parts and divided into 24 groups according to 1) enamel surface (sound
Braz. oral res.. Publicado em: 25/11/2019
-
11. Valores de referência para a difusão do monóxido de carbono (fator de transferência) em uma amostra brasileira da raça branca
RESUMO Objetivo Derivar valores de referência em adultos brancos para a difusão do monóxido de carbono (DCO) em uma amostra de diferentes locais do Brasil por um mesmo modelo de equipamento (Sensormedics) e comparar os resultados com os derivados pelas equações de Crapo, Miller e Neder, e da proposta pelo Global Lung Initiative (GLI). Métodos Os test
J. bras. pneumol.. Publicado em: 17/10/2019
-
12. Força muscular respiratória e desempenho no Modified Shuttle Walk Test em escolares com fibrose cística
RESUMO O Modified Shuttle Walk Test (MSWT) é um teste de exercício potencialmente máximo que, associado à avaliação da força muscular respiratória (FMR), reflete a condição respiratória e a capacidade de exercício de escolares com fibrose cística (FC). O objetivo desta pesquisa foi investigar a relação entre FMR e distância percorrida (DP) no
Fisioter. Pesqui.. Publicado em: 18/07/2019