Faktor risiko gangguan pendengaran karena pajanan bising pada sektor informal juru mudi perahu mesin tempel jurusan Belakang Padang-Sekupang Batam tahun 2013 = Risk factors for hearing loss due to noise exposure in the informal sector helmsman outboard engine boat Belakang Padang-Sekupang Batam in 2013

Perancangan dan pengembangan prototype real-time electronic engine control unit untuk mesin otto lfce 1 silinder 65 CC = Design and development of prototype real time electronic engine control unit for 1 cylinder lfce otto engine / Randy Rahmandar

Perancangan dan Pengembangan Connecting Rod dan Crankshaft Mesin Otto Satu Silinder Empat Langkah Berkapasitas 65cc = Design and Development Connecting Rod and Crankshaft of Four Stroke Internal Combustion Engine with 65cc Capacity

Perancangan dan pengembangan lanjut mesin otto satu silinder empat langkah berkapasitas 65 cc = Advanced design and development of four stroke internal combustion engine with 65 cc capacity

Perancangan dan Pengembangan Cylinder Block dan Crankcase Mesin Otto Satu silinder empat langkah Berkapasitas 65 cc = Design and Development Cylinder Block and Crankcase of Four Stroke Internal Combustion Engine With 65 cc Capacity