Tubular Organization of SnO₂ Nanocrystallites for Improved Lithium Ion Battery Anode Performance

Porous tin oxide nanotubes were obtained by vacuum infiltration of tin oxide nanoparticles into porous aluminum oxide membranes, followed by calcination. The porous tin oxide nanotube arrays so prepared were characterized by FE-SEM, TEM, HRTEM, and XRD. The nanotubes are open-ended, highly ordered with uniform cross-sections, diameters and wall thickness. The tin oxide nanotubes were evaluated as a substitute anode material for the lithium ion batteries. The tin oxide nanotube anode could be charged and discharged repeatedly, retaining a specific capacity of 525 mAh/g after 80 cycles. This capacity is significantly higher than the theoretical capacity of commercial graphite anode (372 mAh/g) and the cyclability is outstanding for a tin based electrode. The cyclability and capacities of the tin oxide nanotubes were also higher than their building blocks of solid tin oxide nanoparticles. A few factors accounting for the good cycling performance and high capacity of tin oxide nanotubes are suggested.

Creativity and innovation at work : The role of work characteristics and personal initiative

Resumen tomado de la publicaci??n

The region: territorial organization of modernity

Region is a concept that has been used to describe, analyze and organize spaces. The concept has classical roots, and throughout history has been adapted to serve academic, governmental and planning purposes. This article analyzes the concept’s evolution, from social sciences in general, with an emphasis on a geographical focus. It also frames Latin American ideas in an international  discussion where the French, German and Anglo-Saxon school have been important. And in order  to understand the various theoretical and methodological approaches, it follows an historical overview. Finally, the text explores the way in which the concept was received and used in Latin  America, both by scholars and planners.

A model for a successful organization of a university-level English Phonetics course. 'Un modelo para una organización acertada de un curso de fonética de inglés a nivel de universidad'.

Resumen tomado del autor. Artículo escrito en inglés. Resumen también en inglés

Planning lessons and courses : designing sequences of work for the language classroom.

Recurso sobre la planificación de clases y cursos para estudiantes de inglés como lengua extranjera. La mayoría de los capítulos están organizados alrededor de preguntas que el profesor se podría hacer al planificar una lección o un curso. Cada capítulo ofrece respuestas a las preguntas planteadas o implícitas en el título del capítulo como: quiénes son los estudiantes; cuál es la lección; cómo se aprende; cómo puedo enseñar; qué materiales se pueden seleccionar; cómo empezar a trabajar en la planificación; qué actividades se pueden utilizar y adaptar.

The Importance of Work, Family and Leisure among Girls Finishing Compulsory Education

Resumen basado en el de la publicación

A systematic review of the complex organization of human cognitive domains and their heritability

Resumen tomado de la publicación