Gambaran Resiliensi Siswa SMA Yang Beresiko Putus Sekolah Di Masyarakat Pesisir

Penelitian ini mengkaji resiliensi siswa SMA yang beresiko putus sekolah di masyarakat pesisir. Hasil menunjukkan bahwa resiliensi siswa SMA yang beresiko putus sekolah di masyarakat pesisir secara umum tergolong sedang sampai tinggi. Penelitian kuantitatif deskriptif ini mendeskripsikan nilai mean, standar deviasi, skor minimum dan skor maksimum dari tujuh aspek yang membentuk resiliensi yaitu: Emotion regulation, Impuls control, Optimism, Causal analysis, Emphaty, Self-efficacy dan Reaching out pada siswa SMA yang beresiko putus sekolah di masyarakat pesisir

Synthesis of Biodiesel From Rubber Seed Oil with Acid and Base Activated Natural Zeolite Catalyst

In this study, biodiesel synthesis was carried out using Z-AH and Z-OH Zeolite catalysts to obtain a cheaper and environmentally friendly process. The catalysts were prepared from Sarulla Indonesian natural zeolite (Z-AS) through a chemical activation process with certain HCl 3 M and NaOH 2 M, then calcined at 500°C with Nitrogen gas for 4 hours to obtain Z-AH ang Z-OH catalyst. The catalysts were characterized by FT-IR and XRD. The conversion of rubber seed oil into biodiesel was carried out at temperature of 30 oC, 60 oC and 90 oC. The ratio of methanol: rubber seed oil is 6: 1 (v / v) and the catalyst concentration used is 1% wt. The XRD and FTIR data show that Z-AS activation increases the crystallinity of zeolite and does not damage the zeolite skeletal structure.The Z-AH catalyst has a better catalytic activity than the Z-OH catalyst with the conversion value of the biodiesel product obtained at 69.79%