Results 51 to 60 of about 4,007 (145)

Biobased Polyurethane Films Based on Andiroba (Carapa guianensis) and Buriti (Mauritia flexuosa) Oil Polyols

Journal of Applied Polymer Science, EarlyView.
Polyurethane films were prepared from andiroba (Carapa guianensis) and buriti (Mauritia flexuosa) oil‐derived polyols, emphasizing their potential as bio‐based materials. UV–Vis analysis indicates the retention of carotenoid‐related chromophoric features within the polymer matrix.
João A. P. da Silva, Amanda L. Ferreira, Felipe F. C. Tavares, Chana M. da Silva, Cesar L. Petzhold, Nilo S. M. Cardozo   +5 more
wiley   +1 more source

Conceptualising quality early childhood education: Learning from young children in Brazil and South Africa through creative and play‐based methods

British Educational Research Journal, EarlyView., 2023
Abstract Early childhood has increasingly been acknowledged as a vital time for all children. Inclusive and quality education is part of the United Nations Sustainable Development Goals, with the further specification that all children have access to quality pre‐primary education.
Laura H. V. Wright, Irene Rizzini, Malibongwe Gwele, Lynn McNair, Cristina Laclette Porto, Marsha Orgill, E. Kay M. Tisdall, Malcolm Bush, Linda Biersteker   +8 more
wiley   +1 more source

Chitosan/Gelatin Hydrogels With Hydroxyapatite/Silver Nanoparticles: A Dual Antimicrobial and Biocompatible Platform for Bone Regeneration

Journal of Applied Polymer Science, EarlyView.
Chitosan/gelatin hydrogels containing hydroxyapatite or hydroxyapatite/silver nanoparticles were developed and evaluated for bone tissue engineering applications, demonstrating biocompatibility and antimicrobial activity. ABSTRACT Bone tissue engineering demands multifunctional biomaterials capable of promoting regeneration while preventing local ...
Elisabeth Assis Martins Machado, Anne Caroline da Silva Rocha, Lívia Rodrigues de Menezes   +2 more
wiley   +1 more source

Quadro institucional para o desenvolvimento sustentável: o papel dos países em desenvolvimento com base na análise crítica do discurso da Rio+20

Cadernos EBAPE.BR
Na Rio+20, conferência da Organização das Nações Unidas (ONU) sobre o desenvolvimento sustentável, dois temas foram debatidos: economia verde e o quadro institucional para o desenvolvimento sustentável.
Paulo Thiago Nunes Bezerra de Melo, Helena Kuerten de Salles, Hans Michael van Bellen   +2 more
doaj   +1 more source

Desigualdades e limites deveriam estar no centro da Rio+20

Estudos Avançados, 2012
O ano de 2011 foi marcado por um conjunto de estudos (muitos dos quais patrocinados pelas Nações Unidas) segundo os quais o sistema econômico mundial já ultrapassa perigosamente algumas fronteiras ecossistêmicas, especialmente no que se refere ao clima ...
Ricardo Abramovay
doaj   +1 more source

Quantification of Sulfonated Polyacrylamides by SEC‐UV in Produced Water: Validation and Oilfield Case Study

Journal of Applied Polymer Science, EarlyView.
Size exclusion chromatography with UV–vis detection, combined with ultrasonication pretreatment, enables sensitive detection and quantification of back‐produced polymer at very low concentrations in produced water. This approach supports reliable polymer monitoring and offers a practical route to improve surveillance of polymer flooding performance ...
Eduardo José Creatto, Luis Maqueira, Daniel da Silva Vicente, Thierry Leblanc, Nathaniel Terra, Lara Arinelli, Aurora Pérez‐Gramatges   +6 more
wiley   +1 more source

Communiques on Activities of the State Environmental Council of Poland

Problemy Ekorozwoju, 2010
This scommunique includes relation from the 6th Plenary Meeting of PROS; The Standpoint of the State Environmental Council on Removal of Insulations and Cover Materials Containing Asbestos; information about State Council on Nature Conservation in ...
Tomasz Winnicki
doaj  

Rio + 20, saúde e derretimento das geleiras [PDF]

Saúde em Debate, 2023
Valcler Rangel Fernandes
doaj   +1 more source

Desenvolvimento sustentável na Rio+20: discursos, avanços, retrocessos e novas perspectivas

Cadernos EBAPE.BR
Depois de quatro décadas da Conferência de Estocolmo sobre o Meio Ambiente Humano, e decorridos apenas alguns meses da Rio+20, este artigo busca se aprofundar no caminho percorrido pela agenda global de desenvolvimento sustentável, a partir de Rio-92 até
Roberto Guimarães, Yuna Fontoura
doaj   +1 more source

A cost‐effective DNA extraction protocol for long‐read sequencing in non‐model plants

Applications in Plant Sciences, EarlyView.
Abstract Premise Third‐generation sequencing has revolutionized genomics, enabling in‐depth analysis of genome sequence, structure, and epigenetic features. Yet, extracting high‐quality DNA for long‐read sequencing remains a bottleneck—particularly in non‐model plants, such as mature trees growing in natural environments, which often contain abundant ...
Sofia Gaischuk, Cintia F. Marchetti, Ezequiel Petrillo, Fernando A. Rabanal, Detlef Weigel, Nicolás Bellora, M. Verónica Arana   +6 more
wiley   +1 more source