[1] The ‘‘transition zone water filter’’ model of mantle convection attempts to reconcile geochemical evidence for isolated mantle reservoirs with geophysical evidence for whole mantle circulation by decoupling incompatible elements from bulk mantle circulation via a melt layer above the 410 km discontinuity. This would result in a stratified heating distribution similar to layered convection m...

By combining three mutually immiscible polymeric components in a mixed-arm star block terpolymer architecture, we have observed the formation of a previously unknown class of multicompartment micelles in dilute aqueous solution. Connection of water-soluble poly(ethylene oxide) and two hydrophobic but immiscible components (a polymeric hydrocarbon and a perfluorinated polyether) at a common junc...

Upper ontologies are interesting because describing and representing concepts that can be used across various domains (as opposed to domain ontologies). This feature may enable increased correctness of mappings between domain ontologies, conceptual schema and languages. Unfortunately, there exist various upper ontologies and it is quite difficult to decide or to assess which of them should be u...

This paper outlines the importance of the Millennium Development Goals for urban populations, and some reasons for concern regarding their implementation. It argues that the institutional structures and processes of international donors and national governments can be incompatible with the effective achievement of poverty reduction. It also explains that the relevance of the Millennium Developm...