Results 91 to 100 of about 1,430,095 (270)

Electromembrane Extraction for Multiclass Pesticide Assessment in Soil Matrices: Sustainable Analytical Insights

open access: yesAnalysis &Sensing, EarlyView.
The U‐shaped electromembrane extraction with liquid chromatography‐mass spectrometry enables rapid multiclass pesticide screening in soil. The 15 min, low‐solvent workflow achieves high recoveries and robust linearity, while AGREEprep and GAPI assessments highlight a greener profile compared to literature reports, which represents a smart strategy for ...
Rafael O. Martins   +9 more
wiley   +1 more source

Um bom professor de Matemática deveria : representações de alunos sobre a mediação do professor [PDF]

open access: yes, 2005
Este trabalho aborda algumas representações de alunos sobre a Matemática e seu processo de ensino e aprendizagem. Foram ouvidos 25 alunos de 8ª série de nível fundamental e 25 alunos do 3º ano de nível médio de uma escola privada da região metropolitana ...
Rizzotti, Maria Angela
core   +2 more sources

Brazil Nut Flour as a Functional Ingredient: Effects on Texture, Composition and Sensory Profile of Reduced‐Sugar Gluten‐Free Cookies

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
Graphical abstract of the characterization of Brazil nut flour (BNF) and the impact of its addition on the nutritional and sensory properties of gluten‐free and low‐sugar cookies. The results show that BNF contributed to an improved nutritional quality of the cookies and enhanced overall product acceptance.
Ana Luísa Schiessl Fabri   +5 more
wiley   +1 more source

Quality of life, work management, and career planning as a primary care technology in the Unified National Health System in São Paulo State, Brazil [PDF]

open access: yes, 2010
This article discusses the concept of quality of life in and at work, linked to health work management based on the evaluation of a work management instrument: the Career, Job, and Wage Plan.
Cortizo, Carlos Tato   +5 more
core   +2 more sources

Polylimonene Improves the In Vivo Wound Healing Performance of Sodium Alginate‐Based Hydrogels

open access: yesJournal of Applied Polymer Science, EarlyView.
An oligomer derived from orange peel essential oil incorporated into an alginate hydrogel was shown to be biocompatible and to exhibit a high capacity for in vivo incisional wound healing, as confirmed by experimental assays and mathematical models fitted to the data describing wound area reduction as a function of the dressing‐tissue contact time ...
Roniérik Pioli Vieira   +5 more
wiley   +1 more source

Development and current situation of organic agriculture in Brazil and the State of Sao Paulo. [PDF]

open access: yes, 2008
A description of the organic production in Brazil as well as an in-depth analysis of the organic sector in the State of Sao ...
Abreu, Lucimar Santiago de   +4 more
core  

Polymer‐Crosslinking System‐Filler Interactions in Polychloroprene Adhesives: Experimental and Molecular Modeling Insights

open access: yesJournal of Applied Polymer Science, EarlyView.
The use of polychloroprene is common in elastomeric adhesives. This study highlights the possible substitution of zinc oxide curing systems to a less hazardous metal complex, also evaluating the changes that higher surface area fillers can bring to the adhesive.
Gabriel Bachega Rosa   +3 more
wiley   +1 more source

Colorism and the Law in Latin America—Global Perspectives on Colorism Conference Remarks [PDF]

open access: yes, 2015
Today, persons of African descent make up more than forty percent of the poor in Latin America and have been consistently marginalized and denigrated as undesirable elements of the society since the abolition of slavery across the Americas.
Hernandez, Tanya K.
core   +2 more sources

Surfactant‐Enhanced Electrospun Nanofiber Filters for Efficient Viral and Bacterial Inactivation

open access: yesJournal of Applied Polymer Science, EarlyView.
In this work, electrospun polyacrylonitrile (PAN) nanofibrous filters functionalized with surfactants (CTAB, CPC, and SDS) were developed for air filtration applications. The PAN nanofiber mats enable efficient particulate matter capture while simultaneously providing antimicrobial and antiviral activity against bacteria (E. coli and S.
Edilton N. da Silva   +9 more
wiley   +1 more source

Sofrimento, percepção acadêmica e fatores associados entre estudantes de graduação durante a pandemia de COVID-19

open access: yesRevista Digital de Investigación en Docencia Universitaria
Introdução: A alta prevalência de Transtornos Mentais Comuns (TMC) em universitários(as), especialmente durante a pandemia de Covid-19, indica a relevância de estudos que abordam a saúde mental desse grupo.
Emanuela Pap da Silva   +8 more
doaj   +3 more sources

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