Results 31 to 40 of about 2,257 (136)

Reusable SERS Substrate Based on AuNP/PS‐b‐P2VP Nanocomposites With Photocatalytic Activity

open access: yesJournal of Raman Spectroscopy, Volume 57, Issue 5, Page 828-839, May 2026.
We developed a bifunctional SERS substrate by assembling AuNPs on PS‐b‐P2VP thin films, capable of both sensitive molecular detection and UV‐assisted self‐cleaning. The platform demonstrates excellent reusability over four adsorption–degradation cycles, driven by a hot‐hole‐mediated photocatalytic mechanism without semiconductors.
Moyra F. Vieira   +3 more
wiley   +1 more source

<b>Microbiological testing and physical and chemical analysis of reconstituted fruit juices and coconut water<br>Avaliação microbiológico e caracterização físico-quimica de refrescos e água de coco</b>

open access: yesAlimentos e Nutrição, 2010
<p align="justify"> The aim of this study was to assess the quality of reconstituted fruit juices and coconut water sold for immediate consumption in bars, restaurants and bakeries, and by street vendors in Belo Horizonte (Minas Gerais, Brazil). Microbial quality was determined by counting coliforms, yeasts, staphylococci and salmonellae.
F. B. PILÓ   +7 more
openaire   +1 more source

Carbon Nanotubes‐Ionic Liquid Composite for Electrooxidation of Trimethoprim

open access: yesElectroanalysis, Volume 38, Issue 4, April 2026.
Methodology employed for studying a new, simple, fast, and cost‐effective method for the identification and quantification of Trimethoprim in pharmaceutical tablets. It employs an electrochemical sensor based on a glassy carbon electrode modified with 4 h functionalized multiwalled carbon nanotubes, 1‐butyl‐3‐methylimidazolium hexafluorophosphate, and ...
João Vinícius Duarte Barbosa   +8 more
wiley   +1 more source

Avaliação da proteólise de queijo artesanal de uma unidade produtora da Serra da Canastra nas quatro estações do ano.

open access: yesRevista do Instituto de Latícinios Cândido Tostes, 2013
Embora muitos estudos já tenham sido conduzidos com queijos artesanais da Serra da Canastra, os mesmos ainda são muito carentes de estudos que permitam melhoria de sua qualidade, maior padronização entre produtores e ao longo das variações sazonais da ...
Luiz Carlos Gonçalves Costa Júnior   +5 more
doaj  

Influence of Hornification Treatment and Fiber Length on the Performance of Recycled Polypropylene Composites

open access: yesPolymer Composites, Volume 47, Issue 5, Page 4793-4803, 10 March 2026.
Study of the influence of hornification treatment and jute and mallow fiber length on the physical, thermal, and mechanical properties of recycled polypropylene (PP) composites. ABSTRACT The growing accumulation of plastic waste has driven its reuse in the development of new composites, with natural fibers emerging as promising reinforcements. However,
Raquel de Sousa Freire   +4 more
wiley   +1 more source

Avaliação da proteólise de queijo artesanal de uma unidade produtora da Serra da Canastra nas quatro estações do ano.

open access: yesRevista do Instituto de Latícinios Cândido Tostes, 2009
Embora muitos estudos já tenham sido conduzidos com queijos artesanais da Serra da Canastra, os mesmos ainda são muito carentes de estudos que permitam melhoria de sua qualidade, maior padronização entre produtores e ao longo das variações sazonais da ...
Luiz Carlos Gonçalves Costa Júnior   +5 more
doaj  

The Use of the Legendre Transform in Chemical Thermodynamics: A Powerful Tool

open access: yesIsrael Journal of Chemistry, Volume 66, Issue 2, March 2026.
Starting from Gibbs’ formulation of internal energy, all thermodynamic potentials can be obtained via the Legendre transform, along with a mnemonic rule for their calculation and an analysis of the extensivity of internal energy, culminating in Euler's theorem, the Gibbs–Duhem equation, and the definition of chemical potential.
Renato Veríssimo de Oliveira   +2 more
wiley   +1 more source

Influência do sistema de criação em piso sobre cama e gaiola sobre as características ósseas e a qualidade físico-química e microbiológica de ovos de galinhas [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019
RESUMO O experimento foi realizado no setor de avicultura/UFRRJ, utilizando 348 galinhas semipesadas (linhagem Dekalb Brown), com 52 semanas de idade, criadas sob dois sistemas de produção: cage-free e em gaiolas.
T.L. Reis   +6 more
doaj   +2 more sources

Ribcage Morphology in Native South American Populations From Different Altitudes: Insights From a Global Comparative Framework

open access: yesAmerican Journal of Human Biology, Volume 38, Issue 2, February 2026.
ABSTRACT Objectives Altitude shapes human morphology as highland populations must cope with cold and hypoxic environments. Although Andean highlanders have been proposed to exhibit larger and deeper ribcages, this idea is mainly based on research using disarticulated skeletal elements or non‐South American controls. The objective of this research is to
J. M. López‐Rey   +9 more
wiley   +1 more source

CARACTERIZAÇÃO DE BEBIDA LÁCTEA PASTEURIZADA COM ADIÇÃO DE FERRO

open access: yesRevista Eletrônica Teccen, 2016
A caracterização físico-química e microbiológica de uma bebida láctea pasteurizada com adição de ferro foi realizada com o intuito de avaliação de qualidade.
Clarice dos Santos Sousa   +2 more
doaj   +1 more source

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