In this study, experimental studies have been carried out to improve the yield of biodiesel by addition of co-solvent to enhance the miscibility of the phases and speed up the reaction rate. The co-solvent used are tetrahydrofuran and hexane. The…
The increase of current fossil fuel consumption has led to an increase of soot emission into atmosphere. Accurate prediction of soot production and destruction in a combustion system is not only important for the purpose of the design of the system,…
Beton merupakan salah satu bahan konstruksi bangunan. Campuran beton hanya terdiri semen, air, agregat dan bahan tambah bila diperlukan. Material semen dalam beton sangat penting dikarenakan semen berfungsi sebagai bahan pengikat antara agregat kasar…
Omega-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are essential fatty acids with numerous health benefits. The main sources of these fatty acids are fish and fish oils. However, fish supply is limited and the…
Spatio-temporal pattern of spiders are important in ecosystems because from the pattern we can see the interaction of spiders population with their habitat. In this paper the spatio-temporal pattern of wolf spiders (Lycosidae) in oil palm plantation…