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Bimetallic CuPt alloyed nanoparticles were conveniently synthesized on biohydrogels and were capable of carrying out hydrogen release from ammonium borane hydrolysis. The biohydrogel consisted of bead-shaped alginate chains crosslinked by calcium ions, which were used as support material to synthesize and stabilize the bimetallic nanoparticles, employing adsorption and coreduction strategy steps. The as-prepared nanoparticles exhibited light absorption in the visible range (580 nm) resulting from the surface plasmon resonance (SPR) phenomenon ascribed to the presence of copper in the alloyed system. On the other hand, the presence of platinum atoms in these nanoalloys endows them with a notable catalytic performance toward ammonia borane hydrolysis as a hydrogen release reaction, reaching kr values from 0.32 x 10-4 to 2.23 x 10-4 mol L-1 min-1 as the Pt content increases. Finally, by taking advantage of the SPR light absorption shown by CuPt 1:1, it was demonstrated that these entities could be successfully employed as photocatalysts for the hydrogen generation reaction, boosting its activity by almost 2.06 times compared to its performance in dark conditions. This catalytic enhancement was mainly ascribed to the plasmonic-derived light-harvesting properties and the specimen's metallic composition.

Los centros de formación deportiva en Colombia se han conformado como espacios de formación a través de la práctica de Actividad Física, Recreación y Deporte. Estos centros ofertan sus servicios a nivel público y privado, están regulados bajo una normativa específica e involucra actividades económicas, sociales y educativas. Desde la definición de deporte formativo dada por la Ley 181 (1995) como aquel que “comprende los procesos de iniciación, fundamentación y perfeccionamiento deportivos” (p.5), Run Base Bogotá no solo busca ofrecer un servicio de formación integral en el deporte de atletismo, también busca promover la adaptación de un deporte y todo el entrenamiento que éste conlleva a una modalidad indoor desde sus procesos de iniciación y fundamentación en las primeras edades, y así lograr un posterior perfeccionamiento en el atletismo nacional e internacional a futuro. Run Base Bogotá, nace de la experiencia de sus inventores en la práctica del atletismo en la ciudad capital y sus sólidos conocimientos alcanzados en la formación como profesionales en Cultura Física, Deporte y Recreación. El escenario está conformado por una zona de preparación específica para el atleta con tres carriles de pista de atletismo para la realización de trabajos de técnica en el atletismo, así como de reacción y explosividad y un carril adicional con un foso de arena para el trabajo específico en salto. Adicionalmente, se cuenta con un gimnasio, dotado de equipos e instrumentos de alta tecnología, que complementan la formación de los atletas y asegura un servicio integral. Por todo lo presentado, Run Base Bogotá es un proyecto innovador que involucra la práctica del atletismo, en un ambiente controlado, profesional y altamente capacitado en la formación de niños y jóvenes, quienes representan la oportunidad de construir un mejor futuro para el país. Sports training centers in Colombia have been formed as training spaces through the practice of Physical Activity, Recreation and Sport. These centers offer their services at a public and private level, are regulated under specific regulations and involve economic, social and educational activities. From the definition of formative sport given by Law 181 (1995) as that which “comprises the processes of initiation, foundation and improvement of sport” (p.5), Run Base Bogotá not only seeks to offer a comprehensive training service in sport athletics, also seeks to promote the adaptation of a sport and all the training that this entails to an indoor modality from its initiation and foundation processes in the early ages, and thus achieve a further improvement in national and international athletics in the future. Run Base Bogotá, is born from the experience of its inventors in the practice of athletics in the capital city and their solid knowledge achieved in training as professionals in Physical Culture, Sports and Recreation. The stage is made up of an athlete-specific preparation area with three athletic track lanes for performing technical work in athletics, as well as for reaction and explosiveness, and an additional lane with a sand pit for specific work in jump. Additionally, it has a gym, equipped with high-tech equipment and instruments, which complement the training of athletes and ensure comprehensive service. For all that has been presented, Run Base Bogotá is an innovative project that involves the practice of athletics, in a controlled, professional and highly trained environment in the training of children and young people, who represent the opportunity to build a better future for the country. Profesional en Cultura Física, Deporte y Recreación Pregrado

Lately, many efforts have been devoted to finding more efficient methods to prepare metal nanoparticles with controlled shapes and sizes, low polydispersity, high purity and good stability in a specific dispersion medium. Therefore, it is highly desired to develop synthetic routes that can contribute to tune the properties of metal nanoparticles for their potential applications in diverse scientific and technological fields. Thus, the application of polymers in the synthesis of metal nanoparticles has attracted great interest due to the better understanding of the parameters involved in the stabilization processes of metal nanoparticles. In addition, the use of polymers in the chemical reduction of metal ions in solution has also attracted much attention recently. Thus, this field of research is growing in importance because it would be possible, for example, to prepare hybrid nanocomposites by using non-toxic reagents and simplified synthetic routes. However, control of the shape, improvement of the size distribution and establishing correlations between polymer structure and characteristics of noble metal nanoparticles are still challenging tasks that should be considered in the synthesis processes in order to obtain hybrid nanomaterials with desirable properties.

A comparative study of the dielectric relaxational behaviour of two structurally close polymers, containing aromatic side groups, was carried out in order to analyse how slight differences in the chemical structure affect the molecular responses to perturbation field. Specifically, poly(phenylpropyl acrylate) (P3Ph1PA) and poly(phenylpropyl methacrylate) (P3Ph1PM) were studied using differential scanning calorimetry and dielectric relaxation spectroscopy in the frequency range 10−2 106 Hz and temperature window of −80 to 120 ∘C. Both techniques show one glass rubber transition for P3Ph1PA and two for P3Ph1PM, which evidence the great effect of the methyl groups on the segmental motions of the polymer. Phenomenological analysis of the datawas carried out in order to establish the strength, width and fragility parameters of the glass rubber transitions. In the case of P3Ph1PA, the strength is found to be larger than for P3Ph1PM, pointing out that themethyl group disturbs the mobility. Conductive processes dominate the dielectric spectra at high temperatures and low frequencies., BR-F, PO-S, MC and MJS gratefully acknowledge CICYT for grant MAT2012-33483. DR and AL acknowledge Fondecyt grant 1120091.

This research aims at the synthesis of several dendrons with different functional groups on their surface, and their use as functionalizing agents of synthetic polymers. Two principal products were synthesized and characterized: dendronized MDI oligomers and dendronized PMMI. The results of the characterization studies of dendronized polymers demonstrated the influence of the polarity of dendrons and the dendronization pathway on the properties of the final products. Fil: Calderon, Marcelo. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina Fil: Martinelli, Marisa. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Froimowicz, Pablo. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología En Polimeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología En Polimeros y Nanotecnología; Argentina Fil: Leiva, Angel. Pontificia Universidad Católica de Chile; Chile Fil: Gargallo, Ligia. Pontificia Universidad Católica de Chile; Chile Fil: Strumia, Miriam Cristina. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina

A wide variety of materials, strategies, and methods have been proposed to face the challenge of wastewater pollution. The most innovative and promising approaches include the hybrid materials made of polymeric nanofibers and photocatalytic nanoparticles. Electrospun nanofibers with unique properties, such as nanosized diameter, large specific surface area, and high aspect ratio, represent promising materials to support and stabilize photocatalytic nanosized semiconductors. Additionally, the role performed by polymer nanofibers can be extended even further since they can act as an active medium for the in situ synthesis of photocatalytic metal nanoparticles or contribute to pollutant adsorption, facilitating their approach to the photocatalytic sites and their subsequent photodegradation. In this paper, we review the state of the art of electrospun polymer/semiconductor hybrid nanofibers possessing photocatalytic activity and used for the remediation of polluted water by light-driven processes (i.e., based on photocatalytic activity). The crucial role of polymer nanofibers and their versatility in these types of procedures are emphasized.