Results 131 to 140 of about 169,055 (257)

Projeto de Melhoria da Qualidade Laboratorial para Países de Língua Portuguesa (2015-2019) [PDF]

open access: yes, 2019
A Lei de Bases da Saúde incentiva a cooperação internacional com Países de Língua Portuguesa na melhoria dos cuidados de saúde, educação, investigação e pesquisa em saúde, a fim de garantir o direito à proteção da saúde humana.
Cardoso, Ana   +7 more
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Design of a Fluorescent Boronic Acid‐Functionalized Pyranoflavylium Receptor to Host and Release Diol‐Rich Bioactive Analytes in a pH‐Dependent Manner

open access: yesChemFoodChem, EarlyView.
This work presents a pH‐responsive ON–OFF fluorescent system based on a novel pyranoflavylium dye functionalized with a boronic acid receptor. The receptor exhibits a markedly higher affinity for the catechol‐containing polyphenol (+)‐catechin than for conventional diol‐rich molecules such as glucose and lactic acid.
Beatriz Senra   +5 more
wiley   +1 more source

Preparo de amostra referência para laboratórios de nutrição animal. [PDF]

open access: yes, 2011
A produção de materiais de referência por meio de ensaios de proficiência é um procedimento de baixo custo e conforme foi observado, após tratamento estatístico apresenta-se adequado para o laboratório usuário verificar se atinge exatidão desejada nos ...
BARIONI JUNIOR, W.   +3 more
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Formation and Characterization of Insoluble Anthocyanins‐λ‐carrageenan Biopolyelectrolyte Complexes: Structural Morphology, Thermal Stability, and Release Dynamics

open access: yesChemFoodChem, EarlyView.
Insoluble biopolyelectrolyte complexes formed between blackberry anthocyanins and λ‐carrageenan are investigated. Optimal complexation occurs at low carrageenan ratios and acidic pH, producing porous hydrogel‐like structures with enhanced thermal stability.
Tomás Garrido   +5 more
wiley   +1 more source

Design and implementation of a 3D‐printed modular distillation tower for experimental teaching in chemical engineering

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Several authors have reported the disconnection between the skills, abilities, and attitudes of graduates from STEM careers with the current needs of the labour market. In science and engineering fields, research has found the need for interdisciplinary approaches that encourage meaningful learning.
Úrsula Manríquez‐Tolsá   +7 more
wiley   +1 more source

In Vivo and In Vitro Evaluation of PTeCA (1H‐Pyrrole‐2,3,4,5‐Tetracarboxylic Acid) in Hair Matrix as a Marker for Oxidative Cosmetic Treatment

open access: yesDrug Testing and Analysis, EarlyView.
A total of 3378 self‐reported treated and untreated hair samples were analyzed for PTCA and PTeCA by LC‐MS/MS. Moreover, their in vitro formation was assessed in 225 untreated hair by different cosmetic treatments with and without oxidative agents. Data suggest that PTeCA could be a reliable marker for oxidative cosmetic treatments in hair.
Sara Casati   +8 more
wiley   +1 more source

Livro explicativo do Programa Nacional de Avaliação Externa da Qualidade - PNAEQ 2016 [PDF]

open access: yes, 2015
Desde 1978 que o Programa Nacional de Avaliação Externa da Qualidade (PNAEQ) é uma das atribuições do Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA, I.P.).
Brito, Cristina   +3 more
core  

Recreational Drug Use at a Music Festival: A Dual Approach Using Hair Biomarkers Analysis and Participant Self‐Reported Drug Use

open access: yesDrug Testing and Analysis, EarlyView.
Combined self‐report and hair analysis in festival attendees (n = 249) revealed substantial discrepancies in drug use reporting, particularly for stimulants and dissociatives. This integrated approach enhances detection of poly‐drug use and provides a more reliable basis for monitoring and harm‐reduction strategies.
A. Y. Simão   +4 more
wiley   +1 more source

CAPACIDADE E COMPORTAMENTO MANIPULATIVO DO CAMARÃO "ROSA” Penaeus subtilis PÉREZ-FARFANTE, 1967 (CRUSTACEA, PENAEIDAE) NA PRESENí­"¡A DE RAÇÃO PELETIZADA, EM CONDIÇí-ES DE LABORATÓRIO

open access: yesBoletim do Instituto de Pesca, 2019
Este estudo teve como objetivo investigar o comportamento e a capacidade de manipulação de três grupos (G1 = 4,0 - 6,9 g; G2 = 7,0 - 9,9 g; e G3 = 10,0 - 13,9 g) do camarão Penaeus subtilis, utilizando uma ração peletizada de igual composição ...
Alberto Jorge Pinto NUNES   +2 more
doaj  

Laboratórios de microbiologia alimentar: os desafios actuais e futuros [PDF]

open access: yes, 2012
Tese de mestrado. Biologia (Microbiologia Aplicada). Universidade de Lisboa, Faculdade de Ciências, 2012Esta tese compila a informação disponível até à data em termos das necessidades que os laboratórios de microbiologia alimentar têm quando pretendem ...
Sousa, Catarina Alexandra Machado Gomes de, 1981-
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