Results 81 to 90 of about 2,513,721 (330)
Practice of physical activity, prosocial behavior and self-concept in adolescents: connections in school contexts [PDF]
, 2018 Introducción. La investigación tiene dos objetivos: (1) establecer diferencias entre variables internas (autoconcepto y prosocialidad) y externas (frecuencia de actividad física) que rodean al adolescente en el contexto escolar, según condiciones ...
GonzálezHernández, Juan +1 more
core +2 more sources
Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives
Advanced Materials, EarlyView.Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi +4 more
wiley +1 more source
Pseudo Justino y la recepción de la Física aristotélica en la antigüedad tardía
Tópicos, 2013 This paper is focused on the critical discussion that Ps. Justinus (an Aristotelian author of the fifth century AD) addresses to some basic principles of Aristotle's philosophy of nature. Ps.
Marcelo D. Boeri
doaj +1 more source
Phase ordering dynamics of reconstituting particles [PDF]
, 2017 We consider the large-time dynamics of one-dimensional processes involving adsorption and desorption of extended hard-core particles (dimers, trimers,⋯, k-mers), while interacting through their constituent monomers.
Grynberg, Marcelo Daniel +2 more
core +3 more sources
Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source
Los conceptos de libertad en Aristóteles
Escritos, 2020 En la tradición filosófica se manejan tres conceptos básicos de libertad: para actuar, para elegir y libertad trascendente. Aristóteles, uno de los grandes íconos de la tradición filosófica, es precursor de estos tres grandes conceptos aunque no los ...
Jorge Alejandro Flórez Restrepo
doaj
Resolving the Structural Duality of Graphene Grain Boundaries
Advanced Materials, EarlyView.Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo +11 more
wiley +1 more source
Novel achromatic single reflection quarter-wave retarder: design and measurement [PDF]
, 2014 In this work, we present an achromatic quarter-wave retarder whose design is based upon the reflection properties of an isotropic-anisotropic interface.
Caré, D. +4 more
core +1 more source
Advanced Materials, EarlyView.The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti +8 more
wiley +1 more source
Tecnociencia, 2003 Existen cuestionamientos sobre la enseñanza de la Física, considerándosela ineficaz. Se esgrimen varios factores, entre los cuales se mencionan la baja calidad de la formación previa de los estudiantes, la poca aplicabilidad de los contenidos ...
Omayra Janeth Pérez Castro
doaj