Results 21 to 30 of about 92,982 (261)

Rendimento académico: influência do autoconceito e do ambiente de sala de aula

Psicologia: Teoria e Pesquisa
Este trabalho tem como objectivo verificar se o autoconceito dos alunos, avaliado pela escala PHCSCS-2, e o ambiente da sala de aula, analisado pela escala APSA, são relevantes na explicação do rendimento académico. Participaram 217 alunos (112 rapazes e
Maria Olímpia Almeida de Paiva, Abílio Afonso Lourenço   +1 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Exploration of Pseudobinary Alloys (Al–Mn)‐(Co–Fe–Ni) to Design High‐Entropy and Compositionally Complex Alloys to Stabilize the τ Phase in Al–Mn‐Based Ferromagnetic Alloys

Advanced Engineering Materials, EarlyView.
This experimental study investigates the thermodynamic limits of the Al–Mn τ ferromagnetic phase within complex‐composition alloys (CCAs). Using nine rare‐earth‐free compositions, it explores a broad region of the pseudobinary AlMnCoFeNi system. The results reveal intricate links between composition, phase stability, and magnetic behavior, highlighting
Sacha Plagnol‐Chauzu, Laurent Peltier, Fodil Meraghni, Stéphane Delalande, Frédéric Mazaleyrat   +4 more
wiley   +1 more source

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Prenatal Diagnosis of a Segmental Small Bowel Volvulus with Threatened Premature Labor

Case Reports in Obstetrics and Gynecology, 2017
Fetal primary small bowel volvulus is extremely rare but represents a serious life-threatening condition needing emergency neonatal surgical management to avoid severe digestive consequences. We report a case of primary small bowel volvulus with meconium
Barbara Monard, Nicolas Mottet, Rajeev Ramanah, Didier Riethmuller   +3 more
doaj   +1 more source

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen [PDF]

Earth System Science Data
Since 2003, the state-of-the-art Canadian Coast Guard Ship (CCGS) research icebreaker Amundsen has furrowed the Canadian Arctic waters to support novel research endeavors and collect oceanographic data.
T. Ratsimbazafy, T. Dezutter, A. Desmarais, D. Amirault, P. Guillot, P. Guillot, S. Morisset   +6 more
doaj   +1 more source

Potential for the Production of Carotenoids of Interest in the Polar Diatom Fragilariopsis cylindrus

Marine Drugs, 2022
Carotenoid xanthophyll pigments are receiving growing interest in various industrial fields due to their broad and diverse bioactive and health beneficial properties. Fucoxanthin (Fx) and the inter-convertible couple diadinoxanthin–diatoxanthin (Ddx+Dtx)
Sébastien Guérin, Laura Raguénès, Dany Croteau, Marcel Babin, Johann Lavaud   +4 more
doaj   +1 more source

A Brain‐Wide Atlas of Astrocytic Oxytocin Receptors Reveals a Glial Basis for Nucleus Accumbens Modulation of Affiliative Behavior

Advanced Science, EarlyView.
The cellular actors of oxytocin signaling are under intense scrutiny. A brain‐wide anatomical and functional analysis in mice and rats reveals widespread expression of oxytocin receptors in astrocytes. These receptors are functionally active and, in the nucleus accumbens, selectively regulate male social affiliation.
Clémence Denis, Stefan Stojilkovic, Kai‐Yi Wang, Cristina Márquez, Annabel C. Kleinwächter, Angel Baudon, Yuval Podpecan, Aurélia Ces, Mélanie Kremer, Isabelle Arnoux, Nathalie Rouach, Jemima Helen, Sophie Trender, Andreas Wallkum, Selina Wunsch, Franziska Schommer, Moritz C. Wimmer, Tim Schubert, Felix Franke, Jabir Aliyu Muhammad, Eva M. Eisemann, Ingrid Camila Possa‐Paranhos, Cassandra Baumann, Pierre‐Alexis Derrien, Quirin Krabichler, Cosmo Garcia, Henning Fröhlich, Matthew K. Kirchner, Valery Grinevich, Pascal Darbon, Javier E. Stern, Ferdinand Althammer, Alexandre Charlet   +32 more
wiley   +1 more source

Recent Advances in Click Chemistry Applied to Dendrimer Synthesis

Molecules, 2015
Dendrimers are monodisperse polymers grown in a fractal manner from a central point. They are poised to become the cornerstone of nanoscale devices in several fields, ranging from biomedicine to light-harvesting. Technical difficulties in obtaining these
Mathieu Arseneault, Caroline Wafer, Jean-François Morin   +2 more
doaj   +1 more source

Epidemiological characteristics of influenza-like illness outbreaks in long-term care facilities of the state of São Paulo, Brazil

Geriatrics, Gerontology and Aging, 2021
Long-term care facilities for older adults present a high risk of outbreaks since they concentrate often more frail and vulnerable individuals. OBJECTIVE: To describe the epidemiological characteristics of influenza-like illness outbreaks and cases among
Pamella Cristina de Carvalho Lucas, Yeda Aparecida de Oliveira Duarte, Eliana Tiemi Masuda, Camila Martins Trevisan, Raquel Gardini Sanches Palasio, Patrícia Marques Ferreira, Ana Lucia Frugis Yu, Telma Regina Marques Pinto Carvalhanas   +7 more
doaj   +1 more source