Results 41 to 50 of about 151,231 (182)

Pretreatment Effects of Conventional and Reactive Extrusion on LLDPE Waste Pyrolysis

Polymer Engineering &Science, EarlyView.
Schematic overview of the pyrolysis study using original and pretreated LLDPE waste samples. Pretreatment was performed via twin‐screw extrusion at 450°C: without additives (REX), with peroxide (REX‐RO2), or with polypropylene (REX–PP). All four samples underwent pyrolysis at 450°C–475°C for 15–45 min.
Yasmin Fialho Siqueira, Débora M. V. Miranda, Larissa L. A. Carvalho, Natasha K. Sitton, Ana Paula de Azeredo, Regina F. Nonemacher, Raquel S. Mauler, Luiz Eduardo P. Borges, José Carlos Pinto   +8 more
wiley   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

Polymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco, Emilly Cruz da Silva, Glenda Sores Gomes, Joane Almeida Alves, Amanda Vidal, Leandro Argolo, Rafaela Ribeiro, Luciana Souza, José Augusto Pires Bitencourt, Leonardo Brasil Felipe, Leonie Asfora Sarubbo, Sidnei Cerqueira dos Santos   +11 more
wiley   +1 more source

Os fundamentos quânticos da Ressonância Magnética Nuclear

Revista Brasileira de Ensino de Física
A ressonância magnética nuclear (RMN) encontra inúmeras aplicações em Física, Química, Engenharia e Medicina. Ela é utilizada sobretudo na análise de composição e estrutura de materiais, tanto sólidos quanto líquidos, e na realização de imagens ...
Celia M. Tokarski Dieguez, Lecio V. Montanheiro, L. Berbeka Cleto, Marlio J.C. Bonfim, C.A. Dartora   +4 more
doaj   +1 more source

Ti-MCM-41 materials synthesised at room temperature as catalysts for cyclisation of (±)-citronellal” [PDF]

, 2009
In the present work we extend the applicability of those Ti-MCM-41 materials, as heterogeneous catalysts, to produce an important intermediate, isopulegol, from the cyclisation of citronellal. The use of this kind of materials appears to be a good option
Carrott, Manuela, Carrott, Peter, Castilho, P., Galacho, Cristina, Ramos, S.S., Rodrigues, A.I.   +5 more
core  

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

Small, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva, Federico Juarez‐Dominguez, Víctor Oestreicher, Martín Mizrahi, Diego Hunt, Bruno J. C. Vieira, Joao C. Waerenborgh, Valeria Ferrari, Gonzalo Abellán   +8 more
wiley   +1 more source

The effect of seawater hardness on cotton fabric dyeing using reactive blue dye

Coloration Technology, EarlyView.
Abstract Oceans are an abundant source of water; their economic potential has not yet been fully exploited. In this context, the current study aims to apply seawater in the dyeing of cotton fabrics, evaluating the influence that total hardness has on the process results.
Iêda Letícia de Souza Ferreira, Clovis de Medeiros Bezerra, Raphael Lucas Jacinto Almeida, Ricardo Paulo Fonseca Melo, Nicole Winne Ribeiro Damasceno, Eduardo Lins de Barros Neto   +5 more
wiley   +1 more source

Commercial clays in cosmetic formulations for hair care: Characterization and application to improve the mechanical properties of hair fibre

International Journal of Cosmetic Science, EarlyView.
The shampoo and conditioner bar formulations enhanced hair gloss, promoting softness, improved cuticle alignment, and effective protection of hair shafts against external aggressors. Findings from mechanical properties measurements indicate that the clay‐containing formulations enhance the mechanical strength of hair, contributing to stronger and more ...
João Pedro Gonçalves de Souza Soares, Melânia Lopes Cornélio, Fausthon Fred da Silva   +2 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

REMOÇÃO DE FLUIDO DE PERFURAÇÃO BASE ÓLEO POR COLCHÕES LAVADORES COMPOSTOS POR ÓLEO VEGETAL, TENSOATIVO E SALMOURA

Holos, 2017
Os fluidos de perfuração base óleo têm sido utilizados em perfuração de poços de petróleo por apresentarem características como, lubricidade, fricção mecânica, inibição química, estabilidade do sistema, entre outras, pois minimizam inúmeros problemas ...
Fabiola Dias da Silva Curbelo, Rayanne Macedo Aranha, Alfredo Ismael Curbelo Garnica, Edson de Andrade Araújo, Júlio Cezar de Oliveira Freitas   +4 more
doaj   +1 more source

Effect of Cell Disruption and Protein Extraction on the Structural and Technological Properties of Tetradesmus obliquus Protein‐Rich Extracts

Sustainable Food Proteins, Volume 4, Issue 2, June 2026.
Despite its considerable potential as a functional food ingredient, T. obliquus faces a major limitation in protein recovery due to the rigidity of its cell wall. In the microalgae industry, protein extraction typically involves two main steps: cell disruption and protein extraction.
César Augusto Sodré da Silva, Tamires Souza Silva, Nayara Flores Fonseca, Rejane de Castro Santana, Jose Roberto Miranda Júnior, Márcio Arêdes Martins, Jane Sélia dos Reis Coimbra   +6 more
wiley   +1 more source