Smoke from burning different kinds of vegetation or wood is often used as a cheap personal protection measure against mosquitos during the evening. To test the efficacy of smoke, a comparative field trial was conducted in the Wosera District, Papua New Guinea. Repellency of smoke from burning wild mango wood (Mangifera spp), leaves from betelnut (Areca catechu), wild ginger (Alpinia spp) and co...

Due to rapid growth in population and industrialization, some new technologies are made for waste utilization and cost reduction in industrial processing by using rice husk (lignocellulosic biomass) as a valued material. In this paper various industrial and domestic application of rice husk and rice husk ash are discussed. Rice husk act as adsorbent for removing heavy metals from wastewater. In...

This study investigates the material characteristics of casting molds found at Silla urban site Hwangnyongsa in Gyeongju to interpret manufacturing techniques mold for bronze used Unified period. The appear be earthen bronze-making, with a thick ceramic wall and are classified into inner outer types. show layered structure, silt layer thinly applied surface. comes contact melted metal during is...