Judul: Medicinal Plants’ Ex situ Conservation in Bogor Botanic Gardens
Abstrak: Bogor Botanic Gardens (Kebun Raya Bogor) has a long history of medicinal plant conservation. In order to improve the quality of the medicinal plant collections and their uses, Kebun Raya Bogor (KRB) needs to adopt relevant public and visitor expectations and manage key aspects of medicinal plant conservation and utilization. This study aims to establish a management strategy for the KRB medicinal plants collection. A set of questionnaires were used in this study. The data were processed using the Likert scale, set scoring method, and the AHP (analytic hierarchy process). The study suggested a total of 60 species to be given more attention. Of the 60 species assessed 9 species of which were prioritized, including Anaxagorea javanica, Coscinium fenestratum, Eusideroxylon zwageri, Heritiera littoralis, Kadsura scandens, Santalum album, Lunasia amara, Scorodocarpus borneensis, and Terminalia bellirica. Three basic conservation aspects (“tri-stimulus amar”) and the key KRB functions need to be strengthened and should be in line with the public expectations in order to achieve an integrated medicinal plant ex situ conservation.
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Judul: Persepsi dan sikap pengunjung Kebun Raya Bogor terhadap koleksi tumbuhan obat
Abstrak: Kebun Raya Bogor (KRB) merupakan kawasan konservasi ex situ yang dibangun dengan konsep tata ruang yang indah dan memiliki fungsi sebagai pusat konservasi tumbuhan, sarana penelitian, pendidikan lingkungan, dan tempat wisata alam. Potensi sumberdaya alam yang masih belum banyak diketahui oleh pengunjung KRB, yaitu koleksi tumbuhan obat. Penelitian ini bertujuan untuk mengidentifikasi (1) persepsi pengunjung terhadap koleksi tumbuhan obat di KRB, (2) sikap pengunjung terhadap koleksi tumbuhan obat di KRB. Penelitian ini diharapkan dapat bermanfaat sebagai masukkan bagi pihak pengelola KRB dalam pengembangan koleksi tumbuhan yang berkhasiat obat serta mendorong sikap positif masyarakat dalam pelestarian tumbuhan obat di KRB.
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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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