Callini Ephesii, Tyrtaei Aphidnaei, Asii Samii Carminum quae supersunt. Disposuit emendavit illustravit Nicolaus Bachius.

Mode of access: Internet.

Callini Ephesii, Tyrtaei Aphidnaei, Asii Samii, Carminum quae supersunt /

Includes index.

Espécies novas de Calliini e Falsamblesthiini (Coleoptera, Cerambycidae, Lamiinae) da Região Neotropical

As seguintes novas espécies são descritas em Callini: Drycothaea gaucha sp. nov. do Rio Grande do Sul, Brasil; Callia metallica sp. nov. de Sucumbios, Equador; em Falsamblesthiini: Nyctonympha boyacana sp. nov. da Colômbia; Bactriola achira sp. nov. e Bactriola antennata sp. nov. ambas de Santa Cruz, Bolívia.

Novas espécies de Lamiinae (Coleoptera, Cerambycidae) neotropicais

Nine species are described: Xenofreini, Xenofrea fulgida from Amazonas, X. albofasciata from Paraná and Santa Catarina; Hemilophini, Sphallonycha irundisa from Amazonas, Apagomerina apicalis from Santa Catarina, Isomerida paraba from Amazonas, all from Brazil; I. santamarta from Magdalena, Colombia; Canarana exotica from Pichincha, Equador; Falsamblestiini, Nyctonympha carioca from Rio de Janeiro, Brazil; Calliini, Euryestola castanea from Amazonas, Brazil.

Espécies novas de Calliini e Falsamblesthiini (Coleoptera, Cerambycidae, Lamiinae) da Região Neotropical

As seguintes novas espécies são descritas em Callini: Drycothaea gaucha sp. nov. do Rio Grande do Sul, Brasil; Callia metallica sp. nov. de Sucumbios, Equador; em Falsamblesthiini: Nyctonympha boyacana sp. nov. da Colômbia; Bactriola achira sp. nov. e Bactriola antennata sp. nov. ambas de Santa Cruz, Bolívia.

Mg for hydrogen storage: synthesis, nanostructure and thermodynamics properties

Nowadays alternative energies are an extremely important topic and the possibility of using hydrogen as an energy carrier must be explored. Many problems infer the technological application of this abundant and powerful resource, one of them the possibility of storage. In the framework of suitable materials for hydrogen storage, magnesium has been the center of this study because it is cheap and the amount of stored hydrogen that it achieves (7.6 wt%) is extremely appealing. Nanostructure helps to overcome the slow hydrogen diffusion and the functionalization of surfaces with transition metals or oxides favors the hydrogen molecule dissociation/recombination. The aim of this research is the investigation of the metal-hydride transformation in magnesium nanoparticles synthesized by inert-gas condensation, exploiting the fact that they are a simple model system. The so produced nanostructured powder has been analyzed in response to nanoparticles surface functionalization by transition metal clusters, specifically palladium, nickel and titanium, chosen on the basis of their completely different Mg-related phase diagrams. The role of the intermetallic phases formed upon heating and hydrogenation treatments will be presented to provide a comprehensive picture of hydrogen sorption in this class of nanostructured storage materials.