Nanostructured WO 3 /TiO 2 nanotubes with properties that enhance solar photoconversion reactions were developed, characterized and tested. The TiO 2 nanotubes were prepared by anodization of Ti foil, and WO 3 was electrodeposited on top of the nanotubes. SEM images show that these materials have the same ordered structure as TiO 2 nanotubes, with an external nanostructured WO 3 layer. Diffuse reflectance spectra showed an increase in the visible absorption relative to bare TiO 2 nanotubes, and in the UV absorption relative to bare WO 3 films. Incident simulated solar photon-to-current efficiency increased from 30% (for bare WO 3 ) to 50% (for WO 3 /TiO 2 composites). With the addition of diverse organic pollutants, the photocurrent densities exhibited more than a 5-fold increase. Chemical oxygen demand measurements showed the simultaneous photodegradation of organic pollutants. The results of this work indicate that the unique structure and composition of these composite materials enhance the charge carrier transport and optical properties compared with the parent materials.4

A composite material consisting of TiO 2 nanotubes (NTs) with WO 3 electrodeposited homogeneously on its surface has been fabricated, detached from its substrate, and attached to a fluorine-doped tin oxide film on glass for application to electrochromic (EC) reactions. A paste of TiO 2 made from commercially available TiO 2 nanoparticles creates an interface for the TiO 2 NT film to attach to the FTO glass, which is conductive and does not cause solution-phase ions in an electrolyte to bind irreversibly with the material. The effect of NT length on the current density and the EC contrast of the material were studied. The EC redox reaction seen in this material is diffusion-limited, having relatively fast reaction rates at the electrode surface. The composite WO 3 /TiO 2 nanostructures showed higher ion storage capacity, better stability, enhanced EC contrast and longer memory time compared with the pure WO 3 and TiO 2 . 4 5

Li-air batteries are at the forefront of advanced battery technologies because of their tremendous theoretical energy density. However, before reaching this potential several technical issues must be understood including optimal electrolytes for Li+ transport. With a vast library of potential electrolytes it is highly impractical to test all materials. Fortunately, atomistic models can assist in selecting optimal electrolyte candidates and thus decrease experimental time. In order for such models to effectively screen electrolyte materials, an interatomic potential must accurately reproduce relevant material properties such as density, viscosity, and transition temperatures. This work presents an approach to calibrate molecular dynamics models to capture these quantities. As a case study we explore the ability of an interatomic potential to correctly predict the transition temperature of ethylene-propylene carbonate mixtures. Here, we modify an available CHARMM potential parameterization to correctly reproduce the relative transition temperatures by modifying the long-range interactions between molecules. In doing this, we can improve the predicted transport properties of carbonate electrolytes which affect battery performance.

Wallenberg's Syndrome represents 36 % of strokes in the brainstem. It is due to occlusion of the inferior cerebellar artery, affecting structures found in the cerebellum and the lateral part of the medulla oblongata. The main risk factor is atherosclerosis. The case is about a 57-year-old male patient with a history of lacunar infarcts in the cerebellum, type 2 diabetes mellitus, smoking and dyslipidemia. It begins with an intense and sudden occipital headache, without attenuating, concomitantly vertigo, hiccups, nausea, vomiting and paresthesia of lower limbs. At the physical examination, decreased peripheral pulses present Horner's syndrome, hypoesthesia, hypoesthesia in left hemiface, and contralateral hemibody, with ataxia, dysmetria and dysdiadochokinesia. MRI was performed with diffusion with diagnostic Hyperintense image of irregular morphology in the left lateral contour of the medulla oblongata, compatible with ischemic event (Wallenberg syndrome). Antithrombotic treatment and physical therapy was indicated. Patient was evaluated 2 months later showing ample improvement. It is a very specific syndrome, whose clinical manifestation depends on the anatomical region affected and abstracts the clinician from other diagnoses.

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