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: Pemodelan Nilai Opsi Tipe Eropa
Abstrak: Option is the right to sell or buy a specified quantity of some underlying asset by paying a specified exercise price, on or before an expiration date. There are two basic types of options, calls and puts. A call option is the right to buy and a put option is the right to sell the underlying asset. There are two types of options according to its execution time, i.e. American and European options. American options can be exercised at any time the holder wishes until the expiration date, while European options can only be exercised on the expiration date. Modelling of option price usually is done analytically by determining solution of differential equation that is satisfied by the price of derivative asset, known as Black-Scholes equation. Because option price is a reflection of present value of expectation of difference between the exercise price and the stock price at expiration date, so it is necessary to study the option price through the concept of present value, as an alternative way to model the option price. The result of this study shows that modelling of option price using differential equation method and present value approach give the same option price. Furthermore the results of ilustration give informations about the relation of the option price with its parameters as follow: First, increase in the current stock price causes the call option price also to increase, while the put option price, on the contrary, will decrease. Second, increase in the exercise price causes the call option price to decrease, while the put option price will increase. Third, the longer the expiration time the call option price will be higher, while the put option price doesn’t have the same tendency, but it depends on other parameters. Fourth, increase in the interest rate causes the call option price to increase, while the put option price will decrease. Finally, increase in the volatility causes the price of both call option and put option will increase.
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