Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2022) Peer Review_Idra_2019_Rasayan journal of chemistry (Volume 12). -. (Unpublished)

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2021) Similirity_2019_Idra_Rasayan Journal of Chemistry_2. -. (Unpublished)

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2019) BIODIESEL PREPARATION FROM OIL FRACTION OF CRUDE POND PALM OIL THROUGH SiO2/SO3- H+-CATALYZED ESTERIFICATION FOLLOWED BY KOH-CATALYZED TRANSESTERIFICATION. 10th International Conference on Green Technology (ICGT) 2019. (Unpublished)

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2019) Biodiesel Preparation from Oil Fraction of Crude Pond Palm Oil through SiO2/SO3- H+-Catalyzed Esterification Followed by KOH-Catalyzed Transesterification. In: 10th International Conference on Green Technology (ICGT 2019). (Unpublished)

Hanna, Mutiara and Ety, Apprilia and Safitra, Edwin (2019) Faktor-Faktor yang Mempengaruhi Kejadian Dermatitis Kontak Akibat Kerja pada Karyawan Salon di Kelurahan Pahoman. J Agromedicine Unila, 6 (2). pp. 308-311. ISSN 2356-332X

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2019) PHYSICAL CHARACTERISTICS AND CATALYTIC ACTIVITY OF SULFATED SUGARCANE BAGASSE SILICA (SiO2/SO3 -H+) FOR COCONUT OIL TRANSESTERIFICATION. Rasayan Journal of Chemistry, 12 (3). pp. 1595-1600. ISSN 0974-1496 | e-ISSN: 0976-0083

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin (2018) Physical Characteristics and Catalytic Activity of Sulfated Sugarcane Bagasse Silica (SiO2/SO3-H+)for Coconut Transesterification. In: The 2nd International Conference on Applied Sciences Mathematics and Informatics, 9-11 Agustus 2018, Hotel Horison, Bandar Lampung, Indonesia. (Unpublished)

Herlina, Idra and Simanjuntak, Wasinton and Rilyanti, Mita and Safitra, Edwin PHYSICAL CHARACTERISTICS AND CATALYTIC ACTIVITY OF SULFATED SUGARCANE BAGASSE SILICA (SiO2/SO3 -H+)FOR COCONUT OIL TRANSESTERIFICATION. Rasayan Journal of Chemistry, 12 (3). pp. 1595-1600. ISSN 0974-1496