Results 31 to 40 of about 12,659 (195)

New fossil unveils the dentary anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil

The Anatomical Record, EarlyView.
Abstract Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic ...
Lísie Vitória Soares Damke, Vitória Zanchett Dalle‐Laste, Leonardo Kerber, Lúcio Roberto‐da‐Silva, Rodrigo Temp Müller   +4 more
wiley   +1 more source

Alfabetização científica no contexto das séries iniciais / [PDF]

, 2000
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Educação.O presente estudo consiste em uma reflexão e contribuição das Ciências Naturais para o desenvolvimento da Alfabetização Científica nas Séries Iniciais ...
Lorenzetti, Leonir
core  

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

Polymer 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, Adriano R. S Silva, Yasmin S Medeiros, José R Santos Neto, Jamily L dos Santos, Ananias L dos Santos, Roberta L. S Bernardino, Giulian César S Sá, Leandro A Pocrifka, Sidnei C dos Santos, Emilly C Silva   +10 more
wiley   +1 more source

A Construção curricular popular crítica no ensino de ciências naturais e suas implicações na prática docente [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Programa de Pós-Graduação em Educação Científica e Tecnológica, Florianópolis, 2010A presente pesquisa investiga o processo de Reorientação Curricular Popular Crítico no Ensino de Ciências,
Stuani, Geovana Mulinari
core  

Photogenerated fluphenazine radical cations for antiviral functionalization of polypropylene masks

Polymer International, EarlyView.
Fluphenazine impregnated into nonwoven polypropylene masks is photoexcited to a radical cation, which inactivates viruses on the polymer surface without causing damage to the masks. Abstract The incorporation of photoactive molecules into polymeric substrates offers a compelling route to introduce advanced functionality while preserving the host ...
Lilian Martins‐Nascimento, Martha T Oliveira, Karla KF Barbosa, Fábio Furlan Ferreira, Iseli L Nantes   +4 more
wiley   +1 more source

Ensino de ciências naturais: Perspectivas de um grupo de professoras

, 2022
A complexidade do ensino de Ciências Naturais no início da escolarização infantil tem promovido discussões, no sentido de favorecer a reconfiguração das concepções sobre a aprendizagem de conceitos científicos, assim como o desenvolvimento de práticas ...
Aline Juliana Oja Persicheto
core   +1 more source

17‐epi‐Melianodiol, a new protolimonoid from Melia azedarach fruits, exhibits larvicidal activity and is associated with oxidative imbalance and midgut epithelial damage in Aedes aegypti larvae

Pest Management Science, EarlyView.
The bio‐guided phytochemical study resulted in the new compound 17‐epi‐melianodiol. The compound eliminated 100% of Aedes aegypti larvae at 100 ppm, causing pronounced morphological changes, cuticular damage, and extensive vacuolization. Abstract BACKGROUND In Brazil, Aedes aegypti is the primary vector of arboviruses such as dengue, chikungunya ...
Kethleen Duarte Crespo Soares, Thalya Soares Ribeiro Nogueira, Maria Aparecida Aride Bertonceli, Renata Rodrigues da Silva Robaina, Leticia Oliveira da Rocha, Francisco José Alves Lemos, Kátia Valevski Sales Fernandes, Raimundo Braz‐Filho, Ivo José Curcino Vieira   +8 more
wiley   +1 more source

Variações circadianas em Spilotes pullatus (Colubridae)

Biotemas, 2006
Foi determinado para Spilotes pullatus (Serpentes, Colubridae) o ritmo circa  diano da freqüência cardíaca, dos intervalos RR e QT no eletrocardio grama  em condições de ciclo normal (dia/claro e noite/escuro), durante a prima vera.
José Geraldo Pereira da Cruz, Ayrton Adão Schmitt Júnior, Marcelo Reinert   +2 more
doaj  

Beta-lactams susceptibility testing of penicillin-resistant, ampicillin-susceptible Enterococcus faecalis isolates: a comparative assessment of Etest and disk diffusion methods against broth dilution

Annals of Clinical Microbiology and Antimicrobials, 2020
This study aimed to evaluate the accuracy of disk diffusion and Etest methods, compared to that of the broth dilution reference method for identifying beta-lactam susceptibilities of Penicillin-Resistant, Ampicillin-Susceptible Enterococcus faecalis ...
Natália Conceição, Wellington Francisco Rodrigues, Kessys Lorrânya Peralta de Oliveira, Lucas Emanuel Pinheiro da Silva, Laís Rezende Cardoso de Souza, Cristina da de Cunha Hueb Barata Oliveira, Adriana Gonçalves de Oliveira   +6 more
doaj   +1 more source

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

The Chemical Record, EarlyView.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros, Livia C. L. Valente, Thiago Barcellos, Daniela Hartwig, Laura Abenante, Eder J. Lenardão   +5 more
wiley   +1 more source