The study of the influence of flu and cough disease of men and women on their voice spectrum had been carried out. The sample voices were recorded by using a computer equipped with a software called “Praat” as a substitute ...

Improving the quality of groundwater with the addition of coagulation alum and clay of nature using slow sand filters has been carried out Analysis in this study was carried out based on the physical and chemical parameters ...

TPA Muara Fajar is a final waste disposal site located at Muara Fajar, Pekanbaru City which uses an open dumping system. This system still has the potential to spread leachate to the area surround the TPA because this ...

The effect of oil palm ash on strong press and water rates in the mortar has been investigated. The characteristics of oil palm ash mortar materials were analyzed physically and mechanically. The oil palm ash on the ...

The research about molar mass of some metals using calorimeter and Dulong-Petit’s law has been done. The metals used are Aluminium, Iron, Brass and Copper organized in a cubic form with mass of 2.79 g, 7.51 g, 8.38 g and ...