Peran silika dalam identifikasi metalporfirin fraksi toluen dari crude oil duri = The Role of silica for identification metalporphyrin toluene fraction from crude oil duri

Investigasi senyawa metalloporphyrin dalam maltenes crude oil duri = Investigation of metalloporphyrin compound in maltenes of duri crude oil

Studi kandungan senyawa metalloporphyrin fraksi diklorometana dalam asphaltenes crude oil duri = Study the content of metalloporphyrin compounds in the dichlorometana fraction in the asphaltenes of duri crude oil

Isolation of asphaltene-degrading bacteria from sludge oil

Studi pengembangan metode isolasi senyawa organoporfirin menggunakan teknik kromatografi dan ekstraksi pada crude oil duri = Studies isolation method of organoporfirin compounds with chromatography and extraction in crude oil