Effectiveness of a Mindfulness-Based Programme on Perceived Stress, Psychopathological Symptomatology and Burnout in Medical Students.

Objectives: Medical students display a high prevalence of psychopathological symptomatology, stress and burnout, which may continue in their time as resident and fully qualified doctors. The aim of this study is to evaluate and compare the effects of a mindfulness-based programme on these variables in an experimental group of medical students who underwent the intervention programme compared to a control group who did not.

Methods: A quasi-experimental study of two independent groups (experimental and control) with two repeated measures (pre and post) was performed.

Amphiphilic Nucleating Agents to Enhance Calcium Phosphate Growth on Polymeric Surfaces.

Poly(ε-caprolactone) (PCL) is an aliphatic polyester widely explored in the preparation of guided bone regeneration (GBR) membranes because of its interesting mechanical properties and biodegradability. However, PCL high hydrophobicity often impairs cell adhesion and proliferation as well as calcium phosphate growth, all of which are crucial to achieving suitable bone-tissue integration. In this work, aimed at achieving less-hydrophobic surfaces, amphiphilic molecules were added at low concentrations to the polymeric dope solutions that generated the GBR membranes.

Influence of purified multiwalled carbon nanotubes on the mechanical and morphological behavior in poly (L-lactic acid) matrix.

Poly (L-latic acid) (PLLA) is a bioresorbable polymer widely used as a biomaterial, but its fragility can limit its use. An alternative is to produce polymer nanocomposites, which can enhance the mechanical properties of polymeric matrix, resulting in a material with differentiated properties. In this work, PLLA based nanocomposites containing 0.

Inherent predominance of high chiral angle metallic carbon nanotubes in continuous fibers grown from a molten catalyst.

We present evidence that high temperature CVD growth of SWNTs under conditions of continuous spinning of macroscopic fibers leads to an inherent predominance of high chiral angle CNTs, peaking at the armchair end. Raman, UV-vis-NIR absorption, and photoluminescence spectroscopy measurements show the prevalence of metallic SWNTs. The complete chiral angle distribution is obtained by electron diffraction of over 390 CNTs.