Judul: Kajian Pertumubuhan Akar Rambut Cinchona sp dari Inokulasi beberapa Galur Agrobacterium rhizogenes
Abstrak: Problem encountered in bcukation of Cinchona species by A, rhizogenes is low percentage of transformed root initiation and slow growth of hairy root. Strains of A, rhizugenes and the growth medium has a significant effect to the formation of hairy roots. The aim of this research was to evaluate the potmtia1 of several A. rhizogenes strains far initiation of hairy roots of C. succirubra and C. ledgeriano, and to obtain the optimum composition of the medium for hairy roat culture of Cinchona species.
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Judul: Studi transformasi genetik pada tanaman kentang dengan bantuan berbagai isolat Agrobacterium non-disarmed
Abstrak: Berbagai tanaman menghasilkan protein bioaktif yang berguna untukmelawan penyakit penting seperti hiperproliferasi dan infeksi virus, diantaranyabeberapa species Cucurbitaceae. Untuk mendapatkan protein bioaktif dapat secaralangsung mengekstraksi tanaman dari lapang atau melalui kultur in vitro.Keuntungan kultur in vitro antara lain: kultur dalam kondisi aseptik, lingkungantumbuh terkendali dan pertumbuhan cepat. Kultur akar rambut dengan bantuanAgrobacterium rhizogenes merupakan kultur in vitro yang mempunyai kestabilangenetik tinggi karena tidak memerlukan penambahan zat pengatur tumbuh.Tujuan penelitian adalah: 1) mendapatkan bagian tanaman dari tiga spesiesCucurbitaceae yang menghasilkan protein bioaktif dengan rendemen dan aktivitastinggi, serta mudah penanganannya 2) memperoleh kultur akar rambutTrichosanthes cucumirena L. var anguina (L.) Haines yang dapat tumbuh danberkembang tanpa pemberian ZPT serta menghasilkan protein bioaktif denganrendemen dan aktivitas tinggi 3) mendapatkan bagian tanaman atau akar rambutyang menghasilkan protein bioaktif yang dapat menghambat proliferasi galur selkanker in vitro.Uji pendahuluan aktivitas protein menggunakan uji kematian larva udanguntuk mendapatkan konsentrasi protein yang dapat mematikan separuh darijumlah larva Artemia salina Leach yang diuji (LC50). Uji selanjutnyamenggunakan galur sel kanker in vitro untuk mengetahui konsentrasi protein yangdapat menghambat proliferasi sel HeLa dan sel K-562 hingga setengah dariproliferasi sel kontrol (IC50)...dst
Keyword: Potatoes, Plant genetic, Plant physiology, Transformation

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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