Results 91 to 100 of about 840,099 (279)

MOF‐Derived Cu‐TiO2/Alginate Micromotors for Buoyancy‐Regulated 3D Motion

Advanced Science, EarlyView.
In this work, cyanobacteria‐inspired sodium alginate (SA)/Cu‐TiO2/Fe3O4 hydrogel micromotors generate and encapsulate O2 microvesicles upon light irradiation, enabling buoyancy‐mediated Z‐axis upward migration and surface enrichment at the light‐exposed water‐air surface.
Wei Zou, Qing Wu, Jiawei Lin, Kunchen Li, Yulong Ying, Josep Puigmartí‐Luis, Salvador Pané, Sheng Wang   +7 more
wiley   +1 more source

Semiconducting Covalent Organic Frameworks Based on Spin‐Delocalized Trioxotriangulene Neutral Radicals

Angewandte Chemie, EarlyView.
Imine‐linked 2D covalent organic frameworks incorporating delocalized trioxotriangulene (TOT) neutral radicals were synthesized through complementary routes. Direct incorporation of an amine‐functionalized TOT radical yields a highly crystalline, porous framework (TOT‐COF‐H) with intrinsic semiconducting behavior (σRT = 1.2 × 10−4 S cm−1) and a narrow ...
Paula Escamilla, Sara Trigo‐Pérez, Rafael Ramos, Ricardo Ortiz, Manuel Vilas‐Varela, Diego Peña, Manuel Melle‐Franco, Francisco Rivadulla, Manuel Souto   +8 more
wiley   +2 more sources

Giant Direct Magnetoelectric Effect in Nanocomposite CoFe2O4:PVDF‐TrFE Thin Films

Advanced Science, EarlyView.
A novel three‐step grow‐etch‐fill fabrication approach creates structured cobalt ferrite/ferroelectric polymer nanocomposites with high interfacial areas. Driven by efficient strain‐mediated coupling, this crystalline system achieves a giant room‐temperature magnetoelectric coefficient nearly two orders of magnitude higher than other CFO/PVDF‐TrFE thin
Muireann de h‐Óra, Lynette Keeney, Rui Miguel Gonçalves Carvalho, Aliona Nicolenco, Tuhin Maity, Jordi Sort, Luís Amorim, Pedro Martins, Judith MacManus‐Driscoll   +8 more
wiley   +1 more source

Fidelización de usuarios mayores en centros de fitness: gestión de clientes por programas de actividad física [PDF]

, 2010
Los centros de fitness, son hoy en día lugares donde los socios realizan actividad física «controlada», donde mejoran su estado físico y mental, incluso en donde se socializan con otros socios de todas las edades.
Pires Vega, Francisco, García Fernández, Jerónimo   +1 more
core  

Tunable Oxygen Connectivity in Carbaporphyrinoid Polymers on Metal Surfaces

Angewandte Chemie, EarlyView.
Hydroxyl‐functionalized dicarbaporphyrinoid polymers synthesized on Au(111) enable tunable oxygen‐mediated connectivity under UHV conditions. Thermal activation yields one‐dimensional hydroxyl‐terminated polymers that can selectively evolve into either covalently‐linked dibenzo‐p‐dioxane architectures through intermolecular C–O–C coupling or two‐fold ...
Alberto Martínez‐Bajo, Maxence Urbani, Ana Barragán, Óscar Jover, Elena Pérez‐Elvira, Ilaria Tomei, Claudio Goletti, Alejandro Jiménez‐Martín, Aurelio Gallardo, Koen Lauwaet, David Écija, Diego Soler‐Polo, Marco Di Giovannantonio, Tomás Torres, José I. Urgel   +14 more
wiley   +2 more sources

Física para la vida, o, ¿Qué es lo fundamental en un curso de física?

Momento, 1997
Partiendo de una crítica a la enseñanza de la física general orientada hacia las "aplicaciones", se propone un enfoque novedoso en cuanto a los objetivos y se describen algunas de las actividades desarrolladas a manera de ejemplo.
Clara Elvira Camargo Uribe
doaj  

Os saberes/conhecimentos mobilizados pelos professores de estágio curricular nos cursos de licenciatura em Educação Física no Estado de Mato Grosso

Revista Cocar, 2018
O presente artigo tem como objetivo identificar quais os saberes/conhecimentos mobilizados pelos professores de Estágio Curricular nos cursos de Licenciatura em Educação Física do Estado de Mato Grosso. A pesquisa se caracteriza como descritiva com uma abordagem qualitativa.
de Almeida, Francisca Franciely Veloso, Moreira, Evando Carlos   +1 more
openaire   +1 more source

Sublattice‐Resolved Magnetoelastic Coupling and Opposing Pressure Responses in the Frustrated Magnetocaloric GdMn2O5

Advanced Science, EarlyView.
In GdMn2O5, sublattice‐resolved EXAFS and diffraction analysis reveal pronounced spin‐phonon coupling and an unexpected opposing pressure response: the Mn‐driven Néel temperature slightly decreases while the Gd‐sublattice ordering temperature rises under pressures up to 0.86 GPa.
Romualdo S. Silva Jr., João E. Rodrigues, Javier Gainza, Henrik L. Andersen, Federico Serrano‐Sánchez, Neven Biskup, Olivier Mathon, Norbert M. Nemes, José L. Martínez, José A. Alonso   +9 more
wiley   +1 more source

Mechanisms of Temperature‐Dependent Hysteresis in Freestanding BaTiO3/MoS2 Heterostructures

Advanced Science, EarlyView.
Freestanding ferroelectric BaTiO3 membranes are combined with monolayer MoS2 into 2D field‐effect transistors. At room temperature they provide ultrahigh‐κ gating with steep subthreshold swing and minimal hysteresis. Upon cooling, strong ferroelectric switching produces two stable memory states with long retention times.
Thomas Pucher, Federico Mompeán, Víctor Rouco, Carlos León, Jacobo Santamaría, Carmen Munuera, Mar García‐Hernández, Andres Castellanos‐Gomez   +7 more
wiley   +1 more source

Física na disciplina ciências: Alguns problemas; uma proposta [PDF]

, 2001
TCC(especialização) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Física.Propomos, aqui, a inserção da Física no Ensino Fundamental de uma forma mais dinâmica e comprometida com o cotidiano do aluno.
Teixeira, Reginaldo Manoel
core