On the age between 10-12 called mixed dentition teeth period. In this period crowding teeth often happens. Mixed dentition teeth may cause retention increase to the plaque because the cleansing process in the teeth is more difficult. Plaque is a soft lining of bacteria uncalsificated that stays on the teeth and the other objects in the mouth. Plaque in the main factor causes gingivitis. This ex…
Lithium ion batteries are a type of secondary battery which means that they can be used many times if the power has started to run out by recharging, where this battery consists of four important components, namely the positive electrode (cathode), negative electrode (anode), electrolyte and separator. The use of anode material which is usually used in the manufacture of lithium ion batteries i…
Perairan Muara Upang umumnya digunakan oleh masyarakat sekitar untuk sarana transportasi air, menangkap ikan, dan aktivitas pertanian sehingga akan mempengaruhi kualitas perairan. Fitoplankton sangat erat kaitannya dengan parameter fisika – kimia perairan, fitoplankton dan klorofil-a sering dijadikan indikator kesuburan suatu perairan. Tujuan penelitian ini untuk menganalisis jenis dan kelimp…