Results 41 to 50 of about 2,515 (114)

Oficinas pedagógicas: motivando e engajando estudantes de engenharia no estudo da química

Revista Principia, 2017
Este trabalho apresenta resultados da realização de oficinas didáticas extracurriculares cujo objetivo foi avaliar o impacto dessa estratégia na mobilização do interesse de estudantes de Engenharia pelas disciplinas de Química de seu currículo.
Valquíria Villas-Boas Gomes Missell, José Ricardo Ledur, Ivete Ana Schmitz Booth   +2 more
doaj   +1 more source

Sustainable Hybrid Films Based on Ecovio, Sodium Nitrite, and Babassu Mesocarp Starch for Potential Packaging Applications

Polymers for Advanced Technologies, Volume 37, Issue 3, March 2026.
ABSTRACT Replacing conventional plastics in packaging requires biodegradable formulations that balance mechanical performance, thermal stability, and scalable melt processing. Despite growing interest in PBAT/PLA systems, few studies have concurrently incorporated an inorganic additive and a regionally sourced biomass derivative into an Ecovio matrix ...
Layara Lorrana Ribeiro Leite de Castro, Leandra Giorgia de Sousa Neiva, Daniella Stepheny Carvalho Andrade, Yeda Medeiros Bastos de Almeida, Heurison de Sousa e Silva, Tatianny Soares Alves, Renata Barbosa   +6 more
wiley   +1 more source

A novel stirrer for feasible use of 3D-printed carbon-based catalysts within semi-batch systems

Discover Catalysis
New approaches to enable the application of carbon catalysts in advanced water treatment processes have gained increasing attention. Additive manufacturing, particularly 3D printing, offers a pathway to transform powder catalysts into macrostructured ...
José R. M. Barbosa, Manuel F. R. Pereira, Ana Mafalda Ribeiro, Olívia S. G. P. Soares   +3 more
doaj   +1 more source

Estimation of Thermochemical Properties of Propellants Using Peng-Robinson Equation of State

Journal of Aerospace Technology and Management, 2023
Several aspects make nitrocellulose based powders adequate as a solid propellant for rockets and missiles and the preferable propellant to be used in firearms and artillery: it produces less smoke and less fouling than other propellants; its burning ...
Luciana Amorim da Silva, Ana Carolina Marotti Dias, Hector Gabriel Teixeira Volskis,  José Daniel Langendorf da Silva, Aline Cardoso Anastacio, Fernando Cunha Peixoto   +5 more
doaj  

Incorporation of medium chain fatty acids into fish oil triglycerides by chemical and enzymatic interesterification

Grasas y Aceites, 2009
Structured triglycerides (STs) containing both medium-chain fatty acids (MCFA) and polyunsaturated fatty acids (PUFA) in the same molecule offer nutritional and therapeutic benefits.
Maria M. C. Feltes, L. de Oliveira Pitol, J. F. Gomes Correia, R. Grimaldi, J. Mara Block, Jorge L. Ninow   +5 more
doaj   +1 more source

EDUCIÊNCIA: DA INTERDISCIPLINARIDADE AO STEAM

Revista REAMEC, 2020
O Grupo de Pesquisa Laboratório de Ensino de Ciências (EDUCIENCIA) foi criado na Universidade Federal de Rondônia (UNIR) em 2002 e vem atuando de forma interdisciplinar e transdisciplinar na área de Ensino de Ciências, principalmente com a formação de ...
Elizabeth Antonia Leonel de Moraes Martines, Leandro Barreto Dutra, Paulo Roberto de Oliveira Borges   +2 more
doaj   +1 more source

Light-driven oxygen evolution from water oxidation with immobilised TiO2 engineered for high performance

Scientific Reports, 2021
Calcination treatments in the range of 500–900 °C of TiO2 synthesised by the sol–gel resulted in materials with variable physicochemical (i.e., optical, specific surface area, crystallite size and crystalline phase) and morphological properties.
Maria J. Sampaio, Zhipeng Yu, Joana C. Lopes, Pedro B. Tavares, Cláudia G. Silva, Lifeng Liu, Joaquim L. Faria   +6 more
doaj   +1 more source

Carbon/TiO2 Materials From Textile Waste: A Sustainable Approach for Dye Removal

Environmental Quality Management, Volume 35, Issue 3, Spring 2026.
ABSTRACT This study synthesized carbon/TiO2 composites from textile waste through titanium isopropoxide impregnation and calcination to address dye contamination in wastewater. The composites exhibited enhanced specific surface area and pore volume with higher TiO2 content.
Brendah Isabelly Moreira Santos, Amanda Soares Giroto, Amanda Miho Yashima, André Esteves Nogueira, Maraísa Gonçalves   +4 more
wiley   +1 more source

Enzyme Technology in Bioethanol Production from Lignocellulosic Biomass: Recent Trends with a Focus on Immobilized Enzymes

BioResources, 2023
Enzyme immobilization is a useful tool to produce biocatalysts with improved performance, such as high activity, high stability at operational conditions, and easy recovery and reuse.
Beatriz Meneghetti Costa de Araújo, Isabela Oliveira Costa, Hellockston Gomes de Brito, Nathália Saraiva Rios, Everaldo Silvino dos Santos   +4 more
doaj   +2 more sources

Influence of Hydroxypropyl-β-Cyclodextrin on the Photostability of Fungicide Pyrimethanil

International Journal of Photoenergy, 2014
Pesticides continue to play an important role in pest management. However, the intensive pesticide application has triggered several environment negative effects that cannot be disregarded.
Carlos Fernandes, Igor Encarnação, Alexandra Gaspar, Jorge Garrido, Fernanda Borges, E. Manuela Garrido   +5 more
doaj   +1 more source