Judul: Biologi Hyposidra talacaWlk. pada Beberapa Jenis Tanaman di sekitar Perkebunan Teh Gunung Mas PTPN VIII Bogor
Abstrak: Hyposidra talaca is one of the most important pest in tea plantation and can cause significant yield losses. To effectively control the pest we need, the biology of H. talaca needs to be understood. This study aimed to determine the effect of tea, suren, sengon, cinnamon, and sintrong leaves on the biology of H. talaca. The insect were reared on different host plants and were observed for longevity, fecundity, fertility, mortality, and feed consumtion. The longevity of male H. talaca on tea, suren, sengon, cinnamon, and sintrong are 62.13, 63.68, 63.09, 62.23, and 46.46 days respectively and the longevity of females H. talaca on tea, suren, sengon, cinnamon, and sintong are 58.66, 59.21, 58.89, 57.37, and 31.89 days respectively. The fecundity of H. talaca on tea, suren, sengon, cinnamon, and sintrong are 2720.67, 1967.33, 1482.67, 2872.33, and 2009.33 eggs respectively, while the fertility H. talaca on tea, suren, sengon, cinnamon, and sintrong are 84.00, 84.67, 75.00, 90.67, and 86.33 % respectively. The average rate of mortality in the life cycles of H. talaca on tea, suren, sengon, cinnamon, and sintrong are 5.5, 10.56, 13.33, 15.55, and 10.01 % respectively. Average total feed consumption rate of larvae of H. talaca on tea, suren, sengon, cinnamon, and sintrong are 1.97, 0.98, 0.77, 2.29, and 1.32 g respectively.
Keyword: tea pest., alternative host, Hyposidra talaca

Judul: Pengelolaan Kebun dan Upaya Pengendalian Hama Ulat Jengkal (Hypiosidra talaca) dengan Aplikasi Hyposidra talaca Nucleopolyhedrovirus pada Tanaman Teh di PT Perkebunan .Nusantara VIII Gunung Mas Bogor, Jawa Barat.
Abstrak: The objectives of this study is to understand the management of plant maintenance of tea plantation at PT Perkebunan Nusantara VIII Gunung Mas and to propose an alternative pest control for tea looper (Hyposidra talaca) utilizing Hyposidra talaca Nucleopolyhedrovirus (HtNPV). The methods used were interviews, observation in the field, and the field efficacy test of HtNPV directly on tea plants. Tea plant maintenance activities include trimming, fertilizing, plucking, weed control, and pests-diseases management. Poor sanitary condition of tea plantation and the low human resources became limiting factors in the field. The most important pest at PT Perkebunan Nusantara VIII Gunung Mas is tea looper (Hyposidra talaca) that feed on tea shoots and may reduce production to more than 40%. Alternative control measure for H. talaca using HtNPV can be carried out by spraying HtNPV suspension. Effective application of HtNPV was applied twice per week and were able to reduce the population of H. talaca to more than 50% within 7 days, and can reduce the population up to 100% within 11 days.
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Judul: Pemanasan Sekunder Reaksi Fusi Plasma dengan Menggunakan Radio Frequency
Abstrak: Plasma merupakan bentuk ke-empat dari materi setelah padat, cair dan gas yang terbentuk dari proses ionisasi gas. Plasma dapat digunakan dalam reaksi fusi, yaitu reaksi penggabungan dua inti atom ringan menjadi inti atom yang lebih berat sambil melepaskan energi. Untuk mendapatkan energi dari reaksi fusi, inti yang akan direaksikan harus dipanaskan pada temperatur yang sangat ekstrem tingginya. Salah satu cara agar dapat mencapai kondisi ini adalah memberikan pemanasan tambahan atau pemanasan sekunder kepada plasma dalam reaksi fusi tersebut. Nilai daya serap rata-rata ion Deuterium yang sesuai dengan selang nilai daya dari data ITER adalah daya yang menggunakan frekuensi 50 MHz sampai dengan 60 MHz. Dengan menggunakan frekuensi 60 Hz diperoleh nilai daya rata-rata yang diserap sebesar 1,235.10-12 W.
Keyword: gelombang radio, pemanasan sekunder, plasma, reaksi fusi