Results 41 to 50 of about 2,703 (133)

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

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

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

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

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

Influence of Octaglycidyl‐POSS on Processing Behavior, Gelation Kinetics, and Thermomechanical Properties of a DGEBA/Polyamidoamine Epoxy System

Journal of Vinyl and Additive Technology, EarlyView.
The rigid, octafunctional Si8O12 cage of OG‐POSS incorporates into the DGEBA/polyamidoamine network as a multifunctional junction, raising the glass transition temperature (Tg) by up to 19°C and the apparent crosslink density non‐monotonically by 47%‐71% at 1.5, 3.0, and 5.0 phr loading.
Alex da Silva Sirqueira, Adriana dos Anjos Silva, Taiane Andre dos Santos, Igor Schanuel   +3 more
wiley   +1 more source

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

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

Interplay Between Dispersion, Nucleation, and Crystallization in HDPE/Graphene Nanocomposites Processed Under Thermokinetic Conditions

Polymer Engineering &Science, Volume 66, Issue 10, Page 7691-7707, October 2026.
Thermokinetic processing controls graphene fragmentation and dispersion in HDPE, promoting heterogeneous nucleation and multistep crystallization. The balance between nucleation enhancement and chain mobility restriction governs the final crystalline structure and material performance.
Lucas J. S. Nascimento, Tainá dos S. Guatimosim, Fernanda T. G. Dias, Sandro C. Amico, Otávio Bianchi   +4 more
wiley   +1 more source