Sintesis Hijau Nanokomposit Perak dan Karbon Aktif dari Limbah Ampas Kopi Sebagai Adsorben Metilen Biru dan Metil Merah = Green Synthesis of Silver Nanocomposite and Activated Carbon from Coffee Waste as Adsorbent of Methylene Blue and Methyl Red

Optimasi Penjerapan Gas CO, CO2, dan Hidrokarbon pada Emisi Gas Kendaraan Bermotor oleh Karbon Aktif Berbahan Cangkang Kelapa Sawit Termodifikasi MgO = Optimization of CO, CO2, and Hydrocarbon Gas Adsorption in Motor Vehicle Emissions by Activated Carbon Made from Palm Kernel Shell Waste

Proses Dekafeinasi Kopi menggunakan Karbon Aktif dari Ampas Kopi sebagai Adsorben yang diaktifkan menggunakan K2CO3 = Coffee Decaffeination Process using Activated Carbon from Spent Coffee Ground as Adsorbent activated using K2CO3

Hubungan Tingkat Pendidikan Dan Tingkat Pendapatan Terhadap Kualitas Lingkungan Hidup: Bukti Empirik Dari Negara Berpopulasi Tinggi = The Relationship of Level of Education and Level of Income on Environmental Quality: Empirical Evidence From High Population Country

Analisis Kualitas Udara Mikrobiologis di Gedung dan Laboratorium Departemen Teknik Sipil FTUI = Microbiological Indoor Air Quality Analysis in the Building and Laboratory of Civil Engineering Department (Faculty of Engineering, University of Indonesia)