Results 31 to 40 of about 2,630 (135)

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

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

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

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

Histopathological and Molecular Data on Myxobolus spp. Infecting Bryconid Fish From the Brazilian Pantanal Wetland

Journal of Fish Diseases, EarlyView.
ABSTRACT Previous studies described Myxobolus umidus infecting the spleen of Brycon hilarii, whereas Myxobolus pantanalis and Myxobolus salminus infecting the gill filaments of Salminus brasiliensis. In this study, we provided supplementary morphological and molecular data on these three Myxobolus species and histopathological analyses of the tissues ...
Caroline Munhoz Meira, Milena Lucia Cornejo, Sarah Arana, Edson Aparecido Adriano, Antonio Augusto Mendes Maia   +4 more
wiley   +1 more source

Corrosão de cerâmicas à base de Si3N4 em soluções aquosas de HCl 0,1 N

Cerâmica, 1999
O comportamento à corrosão de cerâmicas à base de Si3N4 contendo misturas de Y2O3/SiO2 e RE2O3/SiO2 como aditivos nas proporções de 14 e 21% em volume ambos na estequiometria dos dissilicatos Y2Si2O7 e RE2Si2O7, respectivamente, foi estudado em soluções ...
F. Vernilli Júnior, C. A. Kelly, S. Ribeiro, A. Robin, K. Strecker, M. Hoffmann   +5 more
doaj  

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

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

SiC/Si ceramic hollow fibres: A new approach to Chlorella vulgaris biomass harvesting

The Canadian Journal of Chemical Engineering, Volume 104, Issue 9, Page 4568-4578, September 2026.
Abstract Efficient harvesting of microalgae is a critical challenge for the viability of biorefineries, requiring technologies that combine high selectivity, low cost, and scalability. The current work evaluated the performance of an asymmetric hollow fibre ceramic membrane (HF‐SiC70Si30), fabricated by phase inversion and sintered at 1250°C, in the ...
Erisson Paulo Borges Lopes, Warlen Agnelo Dias, Miria Hespanhol Miranda Reis, Vicelma Luiz Cardoso, Fabiana Regina Xavier Batista   +4 more
wiley   +1 more source