Results 81 to 90 of about 238,577 (261)

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

Estudo histórico

open access: yesMedicina (Ribeirão Preto), 2001
Este trabalho caracteriza-se como um estudo histórico-organizacional da trajetória da Comissão de Controle de Infecção Hospitalar do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, desde a sua constituição (1973) até o momento atual (1997), com base em atas e processos organizados cronologicamente.
Magda Fabbri Isaac Silva   +1 more
openaire   +2 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

Salomônicas: Estudo Preliminar

open access: yesDramaturgias, 2017
Aqui se apresenta análise textual da narrativa do rei Salomão que serviu de ponto de partida do processo criativo de Salomônicas. 
openaire   +3 more sources

Synergistic efforts in specimen digitisation, curation and cataloguing of Brazil's megadiverse flora and funga

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The advancement of digital technologies has brought a rapid global information exchange, impacting all areas of our lives. This also applies to science. Knowledge, conservation and scientific innovation on global biodiversity are being strengthened and disseminated at unprecedented scales.
Ana Flávia Alves Versiane   +9 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  

Digitalising biodiversity: Exploring perceptions on risks and opportunities

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Digitalisation is transforming biodiversity conservation, offering new opportunities for research, governance and public engagement. Herbarium digitisation, for example, enables large‐scale access to plant data, supporting conservation, restoration and sustainable use.
Björn‐Ola Linnér   +9 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  

Assessing the evolutionary distinctiveness of a highly threatened plant group: The urgency to preserve a unique lineage of evolution in Brazil

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Brazil's diverse flora is under several threats, with many unique lineages facing extinction, particularly in biodiverse regions like the Cerrado and campo rupestre. This study sheds light on the conservation needs of Cambessedesia (Melastomataceae), an endemic genus with 95% of its species endangered, using an approach to rank and prioritise species ...
Najla Bastos Scheidegger   +4 more
wiley   +1 more source

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