Judul: Insecticidal and oviposition deterrent activity ofo cerbera odollam and cymbopogon citratus extracts againts Carambola fruit fly bactrocera carambolae.
Abstrak: Carambola fruit fly Bactrocera carambolae (Drew & Hancock), a member of Bactrocera species complex, is a serious pest of star fruits which can attack early stage fruits. Female B. carambolae leaves oviposition puncture marks which then necrotic symptoms develop around the spots after some time on star fruits. The objective of this study was to determine the insecticidal and oviposition deterrent activity of methanolic seed and leaf extracts of Cerbera odollam dan Cympologon citrates against B. carambolae. Foro comparison, we used neem oil (Azadirachta indica) produced by PT. Intaran Indonesia (Bali). In adult mortality test, sendextract of C. odollam (LC50 0.099%) was 2.9, 12.9, and 1.2 times more toxic than leaf extract C. odollam, stem extract of C. citrates, and neem oil,respectively.
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Judul: Efektivitas Ekstrak Buah Bintaro (Cerbera odollam) sebagai Larvasida Lalat Rumah (Musca domestica)
Abstrak: Cerbera odollam is known as bintaro in Indonesia. It is a poisonuous plant which is found at seaside, mangrove forest, and widely used to hold a high wave, prevent landslide, and as decorated plant. Bintaro has potential as a natural larvicide but there is no research about using bintaro to control Musca domestica’s larvae in Indonesia. The objective of this research is to measure effectiveness of bintaro as a larvicide of M. domestica. The parts of bintaro which is used for research were seeds and barks. Seeds and barks were extracted by methanol 96% and diluted by aquabidest. The concentration of extract divided to some groups, there was negative control which is only given aquadest, seeds extract 10, 30 , 60, 80 g/100 ml and barks extract 80 g/100 ml. Seeds and barks extract were tested to larvae groups. The result showed that seeds and barks extract of Bintaro can be used for larvicide. Seeds extract was more effective than barks extract. Phytochemical screening showed that alkaloids, flavonoids, saponins, tannins, and steroids were the secondary metabolite compounds contained in seeds and barks.
Keyword: seeds, Musca domestica, larvicide, Cerbera odollam, barks

Judul: Keefektifan Praujian Nasional Sebagai Persiapan Menghadapi Ujian Nasional Matematika SMEA Negeri dan Swasta Di Jakarta Selatan 06 Pada Tahun Akademik 2004/2005
Abstrak: Praujian Nasional merupakan salah satu bentuk penilaian terhadap kemampuan siswa. Dengan Praujian Nasional akan diperoleh informasi sampai sejauh mana persiapan siswa untuk menghadapi Ujian Nasional. Praujian Nasional diharapkan dapat meningkatkan nilai siswa pada Ujian Nasional. Selain itu Praujian Nasional diharapkan dapat digunakan untuk menilai kesiapan siswa dan bisa sebagai prediksi bagi nilai Ujian Nasional siswa nanti. Peningkatan nilai siswa dapat ditentukan dengan cara melihat pergeseran distribusi perolehan nilai Ujian Nasional dan Analisis Statistik Deskriptif nilai Ujian Nasional. Statistik uji McNemar digunakan untuk mengetahui kesiapan siswa, karena sampel ini tidak bebas. Analisis korelasi dan Regresi linier sederhana digunakan untuk analisis prediksi . Nilai Ujian Nasional meningkat namun belum tentu disebabkan oleh Praujian Nasional. Praujian tersebut tidak bisa digunakan untuk menilai kesiapan siswa. Peluang siswa lulus pada Ujian Nasional lebih tinggi dibandingkan pada Praujian Nasional. Hal ini dikarenakan tingkat kesulitan Praujian Nasional lebih tinggi daripada Ujian Nasional dengan batas kelulusan yang sama. Prediksi nilai Ujian Nasional menghasilkan selang kepercayaan cukup lebar sehingga variasi prediksi nilai Ujian Nasional cukup besar.
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