Results 21 to 30 of about 9,944 (112)

A Hanks‐type bacterial kinase, PknS, directly phosphorylates the alternative sigma factor EcfK to promote resistance to protist predation

The FEBS Journal, EarlyView.
The Xanthomonas citri Hanks‐type kinase PknS autophosphorylates and directly phosphorylates the alternative sigma factor EcfK at five residues. Besides the conserved residue T51 in the σ2 domain, phosphorylation of a residue in the linker between σ2 and σ4 is critical for EcfK activation by promoting its interaction with a positively charged pocket in ...
Lídia dos Passos Lima, Dev Sriranganadane, Daiane Laise da Silva, Natália C. Drebes Dörr, Enzo Breviglieri Sichi Mello, Caio Vinicius dos Reis, Rogério Ferreira Lourenço, José Felipe Teixeira da Silva Santos, Anita Salmazo, Brenno Wendler Miranda, Katlin B. Massirer, Rafael M. Couñago, Cristina E. Alvarez‐Martinez   +12 more
wiley   +1 more source

Double Salts and Racemate in Mefloquine–Ibuprofen and Mefloquine–Ketoprofen Systems. A Structural and Thermochemical Analysis

Chirality, Volume 38, Issue 3, March 2026.
(S)‐ibuprofen or ketoprofen were used to resolve mefloquine, forming double salts structurally similar to the racemic forms. ABSTRACT The formation of salts remains a highly sought‐after yet unpredictable strategy for resolving chiral drugs. Using a drug–drug approach, we have investigated the crystallization behavior of Mefloquine (Mf), a racemic ...
Juliana B. Martins, João V. Segatto, Juan C. Tenorio, Paulo S. Carvalho Jr   +3 more
wiley   +1 more source

Science communication strategies to diverse audiences: a study on the educators of nine science museums and centers from Rio de Janeiro

Amazônia
This exploratory study aims to understand the profile of educators working in science museums and centers in Rio de Janeiro, the challenges faced in carrying out the activity, and the strategies they developed to communicate science to a diverse audience.
Aline de Oliveira Leal, Jessica Norberto Rocha   +1 more
doaj   +1 more source

Dacarbazine as a Positive Control in Melanoma Cell Lines (A375, SK‐MEL‐103, 1205Lu) and a Human Ex Vivo Skin Model

Advanced Biology, Volume 10, Issue 1, January 2026.
The work seeked to demonstrate the drug Dacarbazine as a positive control for toxicity tests in immortalized skin cells (keratinocytes and fibroblasts) and in different neoplastic cell lines, through the assay with resazurin. In addition, an alternative model to replace animals in experimental studies, using skin explant culture (hOSEC ‐ human ...
Marcel Nani Leite, Natália Aparecida de Paula Rios, Juliana Santos Rosa Viegas, Maria Vitória Lopes Badra Bentley, Leandra Náira Zambelli Ramalho, Enilza Maria Espreafico, Marco Andrey Cipriani Frade   +6 more
wiley   +1 more source

Genetic Ancestry Reveals Historical Diversity of Formation Across Three Brazilian Communities of African Descent (Quilombos) in Central Brazil

American Journal of Human Biology, Volume 38, Issue 1, January 2026.
ABSTRACT Introduction Characterized as relatively isolated communities, many Brazilian quilombos were formed during the period of slavery in Brazil when enslaved persons (most of African descent) ran away or were abandoned by their enslavers. Quilombos in Central Brazil, whose settlement was more recent due to the relative isolation of the region ...
Sabrina Guimarães Paiva, Anna C. Rivara, Matheus de Castro Nóbrega, Rafaela de Cesare Parmezan Toledo, Maria de Nazaré Klautau‐Guimarães, Sidney Emanuel Batista dos Santos, Lorena Madrigal, Silviene Fabiana de Oliveira   +7 more
wiley   +1 more source

Expressão de Conceitos e Significados Bioquímicos à Luz da Gramática de Design Visual

Revista Brasileira de Pesquisa em Educação em Ciências, 2019
O presente trabalho teve como objetivo investigar o processo de construção de conceitos e significados biológicos em bioquímica por licenciandos em Ciências Biológicas da Universidade Federal Rural de Pernambuco (UFRPE) através de Esquema Conceitual em ...
Raíza Nayara de Melo Silva, Ana Maria dos Anjos Carneiro Leão   +1 more
doaj   +1 more source

Neem oil (Azadirachta indica) as a promising feedstock for biolubricant production: enzymatic synthesis, process optimization, and molecular studies

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 1, Page 237-252, January/February 2026.
Abstract The fuel industry remains closely tied to oil‐based fuels. This relationship is responsible for increasing greenhouse gas emissions. Biofuels are an alternative to petroleum‐based fuels that could make industrial production lines more sustainable.
Francisco Simão Neto, Patrick da Silva Sousa, Rafael Leandro Fernandes Melo, Eva Furtado de Sousa, Jessica Lopes da Silva, Francisco Izaias da Silva Aires, Paulo Gonçalves de Sousa Junior, Raniere Dantas Valença, Frederico Ribeiro do Carmo, Sara Jessica Marciano, Diego Lomonaco, Marcos Carlos de Mattos, Maria Alexsandra de Sousa Rios, Aluísio Marques da Fonseca, José Cleiton Sousa dos Santos   +14 more
wiley   +1 more source

Preceptoria: perspectivas e desafios na Residência Multiprofissional em Saúde

ABCS Health Sciences, 2019
Introdução: Os preceptores são profissionais do serviço/assistência que, aliado a um conhecimento pedagógico, acompanham o desenvolvimento profissional de futuros profissionais de saúde.
Sanay Vitorino de Souza, Beatriz Jansen Ferreira   +1 more
doaj   +1 more source

Construção de conceitos e significados de Ciências a partir de temas contemporâneos transversais por meio da Tertúlia Dialógica Científica

Indagatio Didactica, 2023
O presente estudo foi realizado com o objetivo de apresentar a prática da Tertúlia Dialógica Científica (TDC) no contexto da Educação Básica, definindo conceitos e perspectivas de ensino e aprendizagem dessa prática. Trata-se de uma pesquisa qualitativa,
Maeli Francisca dos Santos Ramos, Priscila Aparecida dos Santos Cordeiro, Otoniel da Silva Marinho Filho, Ana Maria dos Anjos Carneiro Leão, Janaína de Albuquerque Couto   +4 more
doaj   +1 more source

Trajetórias formativas docentes: buscando aproximações na bibliografia sobre formação de professores

Alexandria, 2012
Este artigo, de revisão teórica, apresenta etapas da trajetória formativa de professores, mediante os conceitos e as significações atribuídas por autores da área de formação de professores, referências do Grupo de Pesquisa em Ensino de Ciências, da ...
Rodolfo Langhi, Roberto Nardi
doaj