In this study, nickel nanoparticles (Ni(0)NPs) and palladium nanoparticles (Pd(0)NPs) were prepared in neat glycerol under hydrogen pressure by the bottom-up approach. The formation of zero-valent metal nanospheres was evidenced by... more
In this study, nickel nanoparticles (Ni(0)NPs) and palladium nanoparticles (Pd(0)NPs) were prepared in neat glycerol under hydrogen pressure by the bottom-up approach. The formation of zero-valent metal nanospheres was evidenced by transmission electron microscopy (TEM) and powder X-ray diffraction (XRD) analyses. Regarding their catalytic behaviors, Ni(0)NPs permitted to obtain the corresponding (Z)-alkenes in the semi-hydrogenation of both internal and terminal alkynes. In contrast, over-hydrogenations of such alkynes towards the alkanes were observed over Pd(0)NPs after only 2 hours of reaction. Interestingly, the catalytic phase of Ni(0)NPs in glycerol could be recycled up to 5 times, preserving their catalytic activity and selectivity.
The coastal area in the Son Tra – Tam Ky region have various kinds of sand dunes: (1) embryo dunes; (2) foredunes; (3) yellow dunes; (4) gray dunes; (5) white dunes; (6) brown dunes. These sand dunes play an important role in maintaining... more
The coastal area in the Son Tra – Tam Ky region have various kinds of sand dunes: (1) embryo dunes; (2) foredunes; (3) yellow dunes; (4) gray dunes; (5) white dunes; (6) brown dunes. These sand dunes play an important role in maintaining biodiversity, minimizing the damage of natural hazards and tourism development. In last decade, the sand dunes in Son Tra (Da Nang) - Tam Ky (Quang Nam) is strongly influenced by urbanization and tourism development. Different resorts have been built along the beaches, narrowing protective forests on the sand dunes. It does not only reduce the value of cultural ecosystem services; but also, the ability to regulate natural disasters and air pollution. Therefore, the study aims to assess the unbalance in sand dune ecosystems service supply in Son Tra - Tam Ky area. Methods used in the study include: remote sensing and GIS, collecting statistics and specialist interviews. The results showed a clear differentiation in the potential of the ecosystem serv...
Research Interests: Analytical Chemistry, Mass Spectrometry, Food Microbiology, Enterotoxins, Animals, and 9 moreMeat, Staphylococcus aureus, Trypsin, High Pressure Liquid Chromatography, Chickens, Reproducibility of Results, Sensitivity and Specificity, Quantitative proteomics, and Pharmacology and pharmaceutical sciences
Abstract The evolution of current wireless access communication networks, especially inside buildings, moves towards higher microwave carrier frequencies in order to support the ever-growing data traffic volumes. This causes significant... more
Abstract The evolution of current wireless access communication networks, especially inside buildings, moves towards higher microwave carrier frequencies in order to support the ever-growing data traffic volumes. This causes significant infrastructure cost increments due to the complexity and increased number of antenna sites needed for a certain area of coverage. Radio-over-Fibre (RoF) distribution antenna systems can reduce costs by means