Results 41 to 50 of about 18,310 (180)

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

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

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

Design of Experiments‐Based Optimization of Recovered Carbon Black–Reinforced Isobutylene–Isoprene Rubber in Comparison With Conventional Carbon Black Systems

Journal of Applied Polymer Science, Volume 143, Issue 27, July 15, 2026.
Optimized potential of rCB via DOE: recovered carbon black from end‐of‐life tires was assessed as a full substitute for conventional carbon black in IIR composites. DOE and response surface methodology optimized rCB loading, plasticizer, and sulfur contents. Hardness showed linear trends, while rupture energy was nonlinear.
Vinícius Guedes Gobbi, Ester Costa de Almeida, Roberta Helena Mendonça, Marysilvia Ferreira da Costa   +3 more
wiley   +1 more source

Laboratórios de Engenharia Química

, 2002
Este livro pretende ser um elemento de apoio a quem leciona ou pretende lecionar uma disciplina de Laboratórios de Engenharia Química. O manual apresentado aborda os seguintes aspetos no âmbito dos Laboratórios de Engenharia Química: reatores em fase ...
Mendes, Adélio; Universidade do Porto
core   +2 more sources

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

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

Synthesis of Novel C‐Acyl‐Glycosyl Sulfonamides via Pd‐Catalyzed Carbonylative Coupling

European Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
A Pd‐catalyzed carbonylative coupling of 1‐iodo‐glycals with diverse sulfonamides using Mo(CO)6 enables efficient access to C‐acyl‐glycosyl sulfonamides.This robust and versatile strategy delivers novel glycoside derivatives in good to excellent yields, highlighting their potential for drug discovery.
João A. F. Silva, Mônica F. Z. J. Toledo, Flávia Manarin, João H. de Araujo‐Neto, Milene M. Hornink, Hélio A. Stefani   +5 more
wiley   +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  

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