Chemical composition and antimicrobial activity of the essential oil of Willd.

Willd is a medicinal species that supports the treatment of certain conditions. This is the first study on the chemical composition and antimicrobial activities of the essential oil from Willd bark. This essential oil was extracted by the hydrodistillation method and analysed by gas chromatography (GC), and gas chromatography coupled with mass spectrometry (GC-MS).

A comparative study on essential oils from the leaves and stems of Vietnamese Kunth.

Kunth is widely known as potential herbal medicine, although it is an invasive alien species in Southeast Asia. In this study, the essential oils from leaves and stems of were extracted by hydrodistillation method, and the chemical profiles of essential oils were then analysed by gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS). It was found that there were similarities and differences in chemical compositions and their percentage between the essential oils obtained from these two parts.

Preparation of Gold-Silver Alloy Nanoparticles Supported on NiCo2O4 Spinel Oxides for the Treatment of CO in Atmosphere.

Heterometallics are an important class of catalysts. Alloy nanoparticles have higher activities than monometallic counterparts in catalysis because of the synergistic effects between the two metals. The Ni-Co composition, which is a typical alloy chemical composition, has a remarkable effect on catalytic activity.