Judul: Bioactivity of Cajuput Seedling N-Hexane Extract as an Attractant for Subteranian Termite Coptotermes curvignathus Holmgren (Isoptera: Kalotermitidae)
Abstrak: Serangan rayap tanah (subterranean termite) terhadap anakan kayu putih (Melaleuca cajuputi) terjadi secara masif di cukup banyak Kesatuan Pemangkuan Hutan (KPH) Perum Perhutani di Pulau Jawa. Diduga terjadinya serangan tersebut berkaitan dengan komponen kimia pada akar anakan kayu putih. Suatu penelitian laboratoris telah dilakukan untuk mengetahui bioaktivitas ekstrak akar anakan kayu putih sebagai pemikat (attractant) bagi rayap tanah Coptotermes curvignathus Holmgren (Isoptera: Rhinotermitidae). Proses ekstraksi mengacu pada ASTM D1108-96 dan karakterisasi ekstrak dilakukan menggunakan alat GC-MS. Pengujian bioaktivitas ekstrak dilakukan dengan metode attractiveness bioassay dan no choice feeding bioassay. Hasil penelitian menunjukkan rata-rata rendemen ekstraksi akar anakan kayu putih adalah 4,94%. Atraktivitas larutan ekstrak pada konsentrasi 0,5%, 0,75%, dan 1% masing-masing mencapai 45,33%, 62%, dan 74,67%. Mortalitas rayap C. curvignathus berkisar antara 9,63%-24.44%. Lethal concentration-50 (LC50) ekstrak akar anakan kayu putih adalah 2,45% (non toksik). Hasil analisis GCMS menujukan bahwa ekstrak mengandung asam linoleat yang berpotensi sebagai bahan pemikat serangga., Subterranean termite attacks on cajuput seedling (Melaleuca cajuputi) occured massively in quite a number of Perum Perhutani Forest Management Units (KPH) in Java Island. It is possibly due to the chemical components of the root of the cajuput seedling. A laboratory study was conducted to determine the bioactivity of cajuput root extract as an attractant for the subterranean termite Coptotermes curvignathus Holmgren (Isoptera: Rhinotermitidae). Extraction process refers to ASTM D1108-96 and extract characterization was carried out using GC-MS. The bioactivity test of the extract was carried out using the attractiveness and no choice feeding bioassay methods. The results showed that the average yield of the extract was 4,94%. The attractiveness of the extract solution at concentrations of 0,5%, 0,75%, and 1% on C. curvignathus reached 45,33%, 62%, and 74,67%, respectively. Meanwhile the mortality of C. curvignathus ranged from 9.63%-24.44%. The lethal concentration-50 (LC50) was 2.45% (non-toxic). GCMS analysis revealed that the extract contained linoleic acid, which has been reported as a feeding stimulant.
Keyword: attractivity, LC 50, linoleic acid, mortality, termite attractant

Judul: Anti-termite Activity of Tamanu Bark Extract (Calophyllum inophyllum L.).
Abstrak: Rayap tanah adalah organisme perusak kayu yang umumnya ditemukan menyerang material berbahan dasar kayu. Rayap ini sangat merugikan karena merusak komponen bangunan dan rumah serta produk kayu lainnya. Salah satu cara untuk meningkatkan daya tahan kayu dari serangan organisme perusak adalah dengan pengawetan kayu. Nyamplung (Calophyllum inophyllum L.) merupakan tumbuhan tropis yang banyak ditemukan di daerah pesisir Indonesia. C. inophyllum dikenal sebagai sumber yang kaya akan zat ekstraktif yang dianggap berpotensi sebagai pengawet kayu. Penelitian ini bertujuan untuk menganalisis kadar zat ekstraktif kulit batang C. inophyllum, menganalisis aktivitas ekstraktif kulit batang C. inophyllum terhadap rayap tanah, dan mengidentifikasi senyawa aktif yang terkandung di dalam zat ekstraktif kulit batang C. inophyllum yang bersifat toksik terhadap rayap tanah Coptotermes curvignathus. Serbuk kulit batang C. inophyllum diekstraksi secara berurutan dengan menggunakan pelarut n-heksana, etil asetat, dan metanol dengan metode maserasi. Pengujian antirayap dilakukan dengan menggunakan paper disc method dengan dua cara yaitu no-choiche dan two choice-test. Kertas uji Whatman berdiameter 20 mm ditetesi dengan larutan ekstrak dengan konsentrasi 4%, 6%, 8%, dan 10% (b/v). Kemudian, kertas dimasukkan ke dalam tabung akrilik, lalu ditambahkan rayap tanah C. curvignathus. Kasta pekerja sebanyak 45 ekor untuk no-choice, dan 90 ekor untuk two-choice test. Sementara itu, kasta prajurit sebanyak lima ekor untuk no-choice, dan 10 ekor untuk two-choice test. Pengujian dilakukan selama tujuh hari. Parameter yang digunakan dalam pengujian ini adalah mortalitas rayap dan kehilangan berat kertas uji. Hasil penelitian menunjukkan bahwa total kandungan ekstraktif kulit batang C. inophyllum adalah 30,24%. Zat ekstraktif kulit batang C. inophyllum memiliki aktivitas anti rayap. Ekstrak yang paling aktif sebagai antirayap ditunjukkan oleh ekstrak n-heksana dan etil asetat. Ekstrak n-heksana teridentifikasi mengandung senyawa friedelan-3-one, sedangkan ekstrak etil asetat mengandung senyawa 1,2-benzene dicarboxylic acid, dinonyl ester dan friedelan-3-one. Senyawa-senyawa tersebut diduga berperan dalam aktivitas antirayap pada ekstraktif kulit batang C. inophyllum., Subterranean termites are wood-destroying organisms that are commonly found attacking wood-based materials. They cause economic loss because they damage the components of houses and buildings. One way to increase the resistance of wood to degrading organisms is by wood preservation. Tamanu (Calophyllum inophyllum L.) is a tropical plant commonly found in coastal areas in Indonesia. C. inophyllum is a rich source of extractive substances that have potential as wood preservatives. This study aimed to analyze the extractive content of C. inophyllum bark, to analyze the extractive activity of C. inophyllum bark against subterranean termites, and to identify active compounds contained in the extract of C. inophyllum bark that are toxic to subterranean termites Coptotermes curvignathus. C. inophyllum bark powder was extracted sequentially using n-hexane, ethyl acetate, and methanol solvents by the maceration method. The anti-termite testing was carried out using two paper disc methods: no-choice and two-choice. Some Whatman test papers were dripped with extract solution in concentrations of 4%, 6%, 8%, and 10% (w/v), then the paper was put into an acrylic tube. Then, the paper disc sample was put into an acrylic tube, and the paper was put into an acrylic tube and subterranean termites C. curvignathus were added. The worker caste was 45 for the no-choice test and 90 for
Keyword: Calophyllum inophyllum, Coptotermes curvignathus, natural wood preservative, subterranean termite, wood-destroying organisms

Judul: Pengembangan distribusi ILOS multimedia (ILOSmedia)
Abstrak: The development of open source softwares is still going rapidly nowadays, including open source operating systems for desktop computer, netbook, tablet PC, and smartphone. The open source operating systems have considerable contribution to open source software. Linux is an open source operating system that continues to grow since 1991. The characteristics in general Linux are free, can be distributed freely, and free to make changes in it. Linux in its development is divided into several distributions. Each distribution is made as a specific goal so that the operating system can focus on running the desired functions, such as multimedia, networking, education, etc. The objective of of this research is to develop and evaluate the ILOS distribution for multimedia by providing multimedia of open source packages. ILOSmedia uses Ubuntu10.10 and Remastersys as a tool to remaster. ILOSmedia is developed by installing multimedia packages that have been obtained based on the results of questionnaires from 30 respondents from three communities, which are KPLI Bogor, Linux.com forums, and Kaskus.us forums. ILOSmedia also uses the Realtime kernel as kernal Mutimedia. ILOSmedia testing is performed by 11 students of Computer Science who are members of FOKERZ community. The testing process is performed by executing ILOSmedia via live-cd and filled in a questionnaire. The test result shows that ILOSmedia has hardware compatibility on notebook and PC with good performance. As much as 72.727% of respondents believe that the size of the installer ILOSmedia of 1.34 GB and a minimum 10GB hard drive is normal. ILOSmedia has multimedia packages complete with the percentage completeness according to respondents is 45.455% are very complete and 54.545% are complete. Boot speed ILOSmedia have an average of 28.87 seconds and 90.91% of respondents consider that ILOSmedia have a desktop environment that is easy navigation
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