Results 81 to 90 of about 226,239 (204)

FORMAÇÃO DE PROFESSORES E HISTÓRIAS EM QUADRINHOS DIGITAIS NA EDUCAÇÃO MATEMÁTICA: POSSIBILIDADES E DESAFIOS.

open access: yesRevista Binacional Brasil - Argentina, 2017
Este artigo traz um fragmento dos resultados do curso de formação continuada de professores no uso de softwares para o desenvolvimento de atividades e recursos digitais para a educação matemática.
Adriana Santos Sousa   +1 more
doaj   +1 more source

Impact of polymer aging on main‐chain poly(fullerene)s with halide chain‐ends for inverted perovskite solar cells

open access: yesPolymer International, EarlyView.
Subtle variations in halogen chemistry significantly affect the aging behavior of polymeric electron transport layers in inverted perovskite solar cells, underscoring the importance of precise chemical design for enhancing long‐term stability. Abstract As perovskite solar cells (PSCs) advance toward commercialization, the need for stable and easily ...
João V. Paulin   +7 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

open access: yesPolymer 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   +11 more
wiley   +1 more source

Estudos Cindínicos

open access: yesTerritorium, 2019
A Série Estudos Cindínicos de âmbito temático e visa publicar manuscritos inéditos que os autores entendam submeter-lhe e que tenham resultado de trabalhos de investigação relacionados com as ciências cindínicas. O objetivo principal será o de contribuir para a produção de conhecimento associado a estas ciências, tendo em vista a sua aplicação ...
openaire   +4 more sources

Synthesis and application of alginate@CuFe2O4 polymeric spheres in 17‐β‐estradiol adsorption processes in Amazonian rivers

open access: yesPolymer International, EarlyView.
Magnetic alginate beads, functionalized with copper ferrite, effectively remove 17‐β‐estradiol from Amazonian water, exhibiting optimized 238.65 μg g−1 capacity, fast 40 min kinetics, easy recovery, and successful remediation. Abstract The presence of endocrine‐disrupting compounds, such as 17‐β‐estradiol, in aquatic ecosystems poses a significant ...
Dante S Silva   +10 more
wiley   +1 more source

Estudos rurais

open access: yesTematicas, 2006
Recentemente os estudiosos das chamadas sociedades rurais temos sido testemunhas da emergência de novas configurações políticas, sociais e econômicas no campo brasileiro. Novos atores, no âmbito rural, entram em cena vivenciando novas relações entre eles, o mercado, o Estado e a sociedade abrangente.
openaire   +2 more sources

Latin America's First Active and Intelligent Packaging for Organ Transportation

open access: yesPackaging Technology and Science, EarlyView.
The graphical abstract features Latin America's first active and intelligent packaging for organ transportation (EMAIS‐SR). The image illustrates the device alongside its core features: active temperature control, real‐time monitoring, autonomous battery‐powered operation and biological safety.
Sibele Maria Schuantes‐Paim   +19 more
wiley   +1 more source

Accuracy Of Glomerular Filtration Rate Estimation Formulas For Detecting Moderate Chronic Kidney Disease In Elderly Brazilians [PDF]

open access: yesGeriatrics, Gerontology and Aging
Objective: The objective of this study was to investigate the accuracy of a glomerular filtration rate (GFR) estimation equation based upon serum cystatin C (Hojs) and the abbreviated Modification of Diet in Renal Disease (MDRD) study and the Cockcroft ...
José Roberto de Almeida   +5 more
doaj  

High‐Resolution Satellite Imagery Reveals Landscape‐Scale Benthic Habitat Changes in a Turbid Coral Reef

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
High‐resolution satellite imagery and landscape metrics revealed a 77% decline in coral‐dominated habitats at Abrolhos Bank between 2010 and 2024, accompanied by macroalgal and zoanthid expansion. Spatial reorganisation indicates increasing fragmentation, homogenisation and loss of reef structural complexity.
Thais Andrade Galvão de Medeiros   +4 more
wiley   +1 more source

Comunidades ribeirinhas extrativistas e a exploração de bancos de ostras do mangue Crassostrea sp., na baía de Guaratuba - Paraná, litoral sul do Brasil

open access: yesBioscience Journal, 2014
A carência de informação e de alternativas para o acesso a outros meios de subsistência levam as comunidades ribeirinhas do litoral paranaense a terem no extrativismo uma de suas atividades principais fontes de renda.
Gisela Geraldine Castilho-Westphal   +3 more
doaj  

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