Judul: Sifat Fisis dan Keawetan Kayu Mindi (Melia azedarach L.) dari Rayap Cryptotermes cynocephalus setelah Perlakuan Pemanasan Minyak Jatropha curcas
Abstrak: Kayu mindi (Melia azedarach L.) adalah salah satu jenis kayu cepat tumbuh yang potensial sebagai bahan baku di industri kayu. Kayu mindi memiliki keawetan yang rendah sehingga perlu didukung dengan proses pengawetan. Penelitian ini bertujuan untuk mengevaluasi pengaruh perlakuan pemanasan dalam minyak jarak pagar (Jatropha curcas) terhadap sifat fisis dan keawetan kayu mindi (Melia azedarach) dari rayap kayu kering (Cryptotermes cynocephalus). Kayu mindi diberi perlakuan rendaman dingin dan panas dalam minyak jarak pada suhu 120 °C, 150 °C dan 180 °C. Waktu rendaman panasnya adalah selama 1 dan 3 jam. Hasil penelitian ini menunjukkan bahwa perlakuan minyak jarak tersebut meningkatkan stabilitas dimensi kayu mindi. Kadar air, kerapatan dan stabilitas dimensi kayu mindi yang dipanaskan dengan minyak jarak selama 3 jam pada suhu 180 °C nyata lebih baik dibandingkan dengan perendaman dingin maupun pemanasan minyak jarak selama 1 jam. Keawetan kayu mindi terhadap serangan rayap kayu kering meningkat setelah pemanasan dengan minyak jarak dengan suhu 180 °C selama 1 jam atau selama 3 jam.
Keyword: kayu mindi, keawetan kayu, minyak jarak pagar, perlakuan pemanasan, sifat fisis

Judul: Ketahanan Kayu Mindi (Melia azedarach L.) Dari Rayap Kayu Kering Cryptotermes cynocephalus setelah Perlakuan Pemanasan
Abstrak: This research aimed to analysist the effect of heat treatment on the resistance of mindi (Melia azedarach L.) wood from dry wood termites (Cryptotermes cynocephalus). This research utilized mindi wood obtained from five years old tree from Malimping, Banten. The durability evaluation on mindi wood againts the dry wood termites is based on SNI 01.7207-2006. The result of this research showed that the heating treatments in oven and oil increased the durability of mindi woods. Based on the weight loss analyses, mindi wood that heated at 150 °C for 8 hours in oil increased their durability class from III to II. Statistical test results obtained showed that factors significantly influence weight loss and mortality due to dry wood termite attack is the interaction of temperature, time, and type of heating. Based on the analysis of the combination weight loss and mortality increase in the durability of the real Mindi wood and most effectively produced by heating oil 150 ˚ C for 8 hours while the wood oven heating temperature of 150 ˚ C requires 5 hours resulted in 99.8% mortality and weight loss amounted to 5.15%.
Keyword: timber heating process, mindi wood, durability, dry wood termites

Judul: Query Expansion based on Bilingual Dictionary Using Conditional Probability
Abstrak: Query expansion is a technique that can be used to bridge vocabulary gaps between queries and documents in the collection. With query expansion, user will be helped to formulate queries well so that user will optimize the search result. In this study, the expansion term was resulted from the translation of bilingual dictionary. Subsequently, several terms of expansion were elected based on the closeness of its relationship with the original query. This research showed that conditional probability can be used to select expansion term in bilingual translation method query expansion. The result of 1000 documents was more than 97% relevan document can be retrieved by this system. The more expansion term used, the larger number relevan document was retrieved.
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