Penambahan CaCO3 sebagai aditif padat untuk meningkatkan sifat antiwear gemuk bio kalsium kompleks = Addition of CaCO3 as a solid additive to increase antiwear properties of bio grease calcium complex

Performa gemuk bio overbased kalsium sulfonat dengan penambahan thickener Ca-Oleat kompleks = Performance of overbased calcium sulfonate bio grease with the addition of Ca-Oleic complex thickener

Perbedaan struktur makroskopis dan mikroskopis jaringan hati yang diawetkan dengan larutan formalin, kalsium klorida, dan gliserin = Macroscopic and microscopic structural differences of liver tissue preserved in formaldehyde calcium chloride and glycerine solutions

Perbedaan proporsi asupan kalsium remaja berdasarkan literasi gizi dan faktor lainnya pada siswa-siswi SMAN34 Jakarta tahun 2019 = Difference proportion of calcium intake among adolescent based on nutrition literacy and other factors in students of SMAN 34 Jakarta 2019

Pengaruh cosolvent asam klorida terhadap selective acid leaching dolomit dengan solven asam asetat dalam pembuatan CaCo3 = The effect of hydrochloric acid as cosolvent on dolomite s acid leaching to produce CaCo3 with acetic acid as solvent