Potensi Pencemaran Air Asam Tambang oleh Lubang Bekas Galian Tambang (Void) dan Lahan Penyumbang Asam di Wilayah Kerja Pertambangan Batubara Kota Samarinda Provinsi Kalimantan Timur = Potential Acid Mine Drainage Water Pollution by Former Mining Pits and Acid Contributing Land in the Coal Mining Work Area of Samarinda City East Kalimantan Province

Analisis karakteristik baterai lead acid dengan air asam tambang hasil pertambangan bijih emas sebagai elektrolitnya = Characteristic analysis on lead acid battery using acid mine drainage from gold ore mining as an electrolyte

Sintesis Material Hibrid Silika-Organosilika Terfungsionalisasi Sulfonat dan Uji Aplikasinya pada Reaksi Esterifikasi Asam Lemak dengan Gliserol = Synthesis of Hybrid Materials Silica-Organosilica Functionalized by Sulfonate and Testing Its Application in the Esterification Reaction of Fatty Acids with Glycerol

Analisis Pemanfaatan Lumpur Unit Sedimentasi IPA Teluk Buyung untuk Penyisihan Kandungan Logam Berat pada Lindi = Analysis of Utilization Teluk Buyung Water Treatment Sedimentation Unit Sludge for Heavy Metal Removal in Leachate

Uji aktivitas antimikroba dan emulsifier senyawa hasil esterifikasi asam risinoleat teroksidasi dengan asam asetat, asam laurat, dan asam oleat = Antimicrobial assay and emulsifier test results from esterification of ricinoleic acid oxidized with acetic acid, lauric acid, and oleic acid