In Powder bed fusion (PBF) of metals, the energy a laser- or electron beam is utilized to form near-net-shaped parts from powder bed. A very promising application PBF lies in direct control resulting microstructure by adjusting process parameters. Especially intentional tilting grains one certain direction offers complete new field activity for additively produced specially designed given load ...

It is well-known that severe deformation to metals causes a direct grain refinement of the matrix without special heat-treatments due to the mechanism of dynamic continuous recrystallization (DCR). However, the microstructural revolution during severe deformation is seemed to be different depending on the deformation mode, namely the direction of deformation. In general, multi-directional defor...

Abstract Objective This study evaluated the heavy metal identity and content of registered Thai Traditional medicine (TTM) preparations in Thailand to ensure consumer safety. Methods Both qualitative quantitative information about elemental composition each TTM crude drug some was performed. Seven kinds mineral-based drugs, namely realgar, orpiment, Chinese powder, Sen, vermilion, natural cinna...

An approach for the remediation of heavy metal-contaminated wastewater that is gaining increasing attention application hydroxyapatite (HAP)-based particles. HAP conventionally synthesized through wet chemical precipitation calcium and phosphate ions, although later studies have focused on synthesis from solid calcite contacted with a solution under ambient conditions. This route can allow savi...

The focus of this thesis is a new simple and scalable process to make surface coatings that have multiple length scales, or hierarchical features. Typically, the formation of hierarchical structures involves multiple steps and/or long processing times. In this new process, the hierarchical geometry is formed in a single step. The starting material-spherical copper powder-is oxidized in ambient ...

Microporous materials, such as zeolites and aluminophosphates, have many applications as molecular sieves and shape-selective catalysts. This is due to their three-dimensional frameworks, which contain regular pores and channels, to their high acidity, arising from Brønsted and Lewis acid active sites, and to the incorporation of transition metal atoms into framework sites. This review firstly ...