Judul: Uji daya hasil galur-galur harapan kedelai hitam (Glycine max (L) Merr.) pada lahan sawah di Kabupaten Sumedang, Jawa Barat
Abstrak: Black soybean is important commodity in Indonesia, special for soy sauce. Black soybean have more antosianin and power store more long than yellow soybean. Development food industry raw material from soybean and growth citizen, make demand increase. In spite of national production decrease, so make deficit for soybean. This it make Indonesia to depend with import soybean. Usefull from black soybean for raw material for healthy food and good quality for soy sauce industry. So, black soybean need to increase production and productivity. Increase productivity black soybean can do with to assemble new superior variety high production and adaptability with productive environment like rice field because have first priority in increase national production. In Indonesia, 60% soybean field situated in rice field at dry season I and II. Reseach for get superior variety high production and adaptability with some productive environment did since several years ago in Agronomy dan Horticulture Departement, Bogor Agriculture University. Until now, available black soybean breeding lines for yield trial test. Direction for the reseach is test 33 black soybean breeding lines in rice field in Sumedang Regency, West Java, and identification black soybean breeding lines to can continue for multi location yield trial test.
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Judul: Uji Daya Hasil Galur - Galur Harapan Kedelai Hitam (Glycine max (L.) Merr.) pada Lahan Kering di Kabupaten Bogor
Abstrak: Kedelai merupakan salah satu komoditas tanaman pangan yang sangat penting di Indonesia. Kedelai dimanfaatkan sebagai bahan pangan untuk memenuhi kebutuhan gizi sehari-hari, terutama sebagai sumber protein nabati. Begitu banyak olahan produk yang dihasilkan dari biji kedelai, salah satunya adalah kedelai hitam yang banyak digunakan sebagai olahan kecap. Seiring dengan banyaknya penggunaan kedelai hitam dan pemenuhan kebutuhan bahan baku pun meningkat, maka salah satu caranya dalam memenuhi kebutuhan tersebut adalah dengan meningkatkan produksi kedelai hitam di dalam negeri. Salah satu cara meningkatkan produksi kedelai hitam adalah dengan mendukung pengembangan varietas unggul baru yang sesuai pada kondisi lahan yang ditargetkan melalui program pemuliaan tanaman. Pengembangan ini bertujuan untuk merakit varietas unggul baru yang memiliki daya hasil tinggi serta adaptif terhadap berbagai agroekosistem. Kegiatan ini telah dilakukan oleh Departemen Agronomi dan Hortikultura selama beberapa tahun dan telah menghasilkan sejumlah galur-galur harapan kedelai hitam.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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