Judul: Pengembangan Desain Sistem Pakar untuk Diagnosa Kerusakan alat Berat Bulldozer D375A-2
Abstrak: Alat berat adalah sarana untuk mempercepat proses pelaksanaan suatu pekerjaan yang sukar bahkan tidak mungkin dilakukan oleh manusia. Dalam penggunaan alat berat seringkali mengalami kerusakan·. Kerusakan yang terjadi mengakibatkan tertundanya pekerjaan yang sedang dilaksanakan. Untuk memperbaiki kerusakan memerlukan biaya dan waktu yang cukup lama agar alat berat tersebut dapat berfungsi kembali.
Keyword: 

Judul: Sistem pakar untuk troubleshooting pada bulldozer model D375A-2 Komatsu : Studi kasus pada PT.United Tractors)
Abstrak: Alat berat, sekalipun hasil rekayasa teknologi tinggi tetap akan mengalami kerusakan. Kerusakan pada alat berat dapat terjadi pada sistem elektrik, sistem hidraulik dan mekanik, serta sistem monitor. Troubleshooting diperlukan untuk mencari penyebab kerusakan alat berat dan cara perbaikan kerusakan tersebut Alat berat yang dijadikan obyek penelitian adalah Bulldozer model D375A-2 Komatsu. Expert System for Troubleshooting on Bulldozer D3754-2 (ESTB D375A-2) dirancang dan dibangun untuk membantu Troubleshooting. Kerusakan pada Bulldoser D375A-2 meliputi 55 jenis kerusakan. Konsep yang digunakan dalam troubleshooting berdasarkan Shop Manual D375A-2 Komatsu. ESTB D375A-2 dibangun dengan menggunakan perangkat lunak WINEXSYS (Exsys Professional for Microsoft Window). ESTB D375A-2 dirancang sedemikian fesehingga proses troubleshooting akan berlangsung lebih cepat dan pengguna dapat dengan mudah menggunakannya. ESTB D375A-2 belum dilengkapi dengan gambar komponen-komponen Bulldozer D375A-2 dan denah rangkaian sistem elektriknya.
Keyword: 

Judul: Antiyeast activities of cumin oil (Cuminum cyminum) toward osmophilic yeast strains isolated from high sugar food
Abstrak: The antiyeast activities of cumin oil toward osmophilic yeast strains isolated from high sugar food were studied. Sixty-eight osmophilic yeasts were isolated from sample i.e. strawberry jam (26 isolates), pineapple jam (25 isolates), and South Sumatera honey (17 isolates). No yeast was obtained from condensed milk, Sumbawa honey, sweet soy sauce, and palmsugar. These yeast isolates were identified based on sequence analysis of the ITS region as Candida metapsilosis, C. parapsilosis, C. orthopsilosis, C. etchellsii and Sterigmatomyces halophilus. Phylogenetic analysis showed that most of the osmophilic yeasts (67 out of 68 isolates) were located in the phylum Ascomycota and only 1 isolate was located in the phylum Basidiomycota. Candida etchellsii was the predominant species in South Sumatera honey, while C. metapsilosis, C. parapsilosis, C. orthopsilosis were predominant species in jam. In both jam and honey samples C. metapsilosis and C. parapsilosis were found, whilst C. orthopsilosis was found only in pineapple jam. All five identified yeast species were used further to examine the antiyeast activities of cumin oil. Cumin oil was analyzed by GC-MS, and it was consisted of some compound i.e. cuminaldehide (35.44%), ρ-cymene (34.77%), β-pynene (15.08 %), γ-terpinene (8.15%), α-thujene, α-pinene, trans-limonene, cis-limonene, pentylcyclohexane, cyclohexane, and apiole. The examination of antiyeast activity based on disc agar diffusion method showed that all of the tested yeasts were sensitive to cumin oil.
Keyword: Cuminum cyminum