Improving bone health: addressing the burden through an integrated approach.

As people age, maintaining mobility becomes increasingly imperative, therefore addressing bone health is the most important way to preserve mobility. Poor bone health encompasses a broad spectrum of diseases, but it is most often quantified as the cumulative burden of osteoporosis and osteoporotic fractures. Rates of these fractures have been increasing and are expected to continue rising globally, attributed to increasing life expectancy worldwide.

Mesoporous matrix encapsulation for the synthesis of monodisperse Pd5P2 nanoparticle hydrodesulfurization catalysts.

The synthesis of monodisperse 5-10 nm Pd5P2 catalytic particles by encapsulation in a mesoporous silica network, along with preliminary data on hydrodesulfurization (HDS) activity, is reported. Precursor Pd-P amorphous nanoparticles are prepared by solution-phase reaction of palladium(II) acetylacetonate with trioctylphosphine at temperatures up to 300 °C. Direct crystallization of Pd5P2 in solution by increasing the temperature to 360 °C leads to sintering, but particle size can be maintained during the transformation by encapsulation of the amorphous Pd-P particles in a mesoporous silica shell, followed by treatment of the solid at 500 °C under a reducing atmosphere, yielding Pd5P2@mSiO2.

How to deploy online guidance during a major incident.

The experience of users of the web resource developed by the Health Protection Agency, following the arrival of H1N1 influenza, can be used to formulate criteria for web communication of up-to-date guidance in any incident management. Users participated in an online questionnaire survey. Responses were analysed quantitatively and qualitatively.

Spongy chalcogels of non-platinum metals act as effective hydrodesulfurization catalysts.

Aerogels are low-density porous materials, made mostly of air, for which hundreds of applications have been found in recent years. Inorganic oxide-based aerogels have been known for a long time, carbon aerogels were discovered in the early 1990s and sulfur- and selenium-based aerogels (chalcogels) are the most recent additions to this family. Here we present new aerogels made of Co(Ni)-Mo(W)-S networks with extremely large surface areas and porosity.