Judul: Etnobotani Pangan dan Obat Masyarakat Desa Pauh Tinggi di Sekitar Taman Nasional Kerinci Seblat
Abstrak: Ethnobotany is a study about traditional utilization of plants by local community. The objective of this research was identified the diversity of food and medicinal plants utilized by local community in Pauh Tinggi village around Kerinci Seblat National Park. The method of data collection were interview, field observation, literature review and herbarium. The result showed that total of 236 species were identified from 64 families, which consisted of 90 species of food plants from 35 families and 187 species of medicinal plants from 58 families. Zingiberaceae was the most frequent food plants family found in this research, while solanaceae and zingiberaceae were the most frequent medicinal plants family. Herbs was the most frequent habitus of food and medicinal plants found in this research. Fruit was the most frequent part of plants that used for food plants, while leaf is the most frequent part of plants that used for medicinal plants. Local community at Pauh Tinggi village used the plants based on their traditional knowledge
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Judul: Keanekaragaman Tumbuhan Pangan dan Obat pada Masyarakat Suku Mbaham Mata di Kampung Werabuan, Kabupaten Fakfak
Abstrak: The society of Papua still depends on forest resources, plants and animals, to fulfill their daily needs. Particularly, the utilization of food and medicinal plants has been done hereditarily until now. The aim of this research is to identify the diversity of food and medicinal plants, also to identify the local wisdom of Mbaham Mata Tribe on the utilization of plant resources. Data collection was done using semi-structured interview and snowball technique. Food plant species which is identified as much as 35 species from 21 family, while medicinal plants are 41 species from 28 family. Beside that, there are 25 species which is identified from 21 family which are utilized as functional food plant. Functional food plant is plants that has double function, as food and also medicine. The society of Mbaham Mata Tribe is still utilizing available plant resources and there are some rituals on doing conservation activities. The local wisdom of the society on plant conservation can be seen on the sasi installation ritual, prohibition to enter the forest, nahahara.
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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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