Judul: Kajian potensi tumbuhan obat untuk mendukung pembentukan smk wanafarma di kabupaten garut
Abstrak: Kabupaten Garut memiliki kawasan hutan yang sangat luas yaitu seluas 107.865 ha, namun potensi tumbuhan obat di wilayah tersebut sampai saat ini belum diketahui. Pengembangan tumbuhan obat di wilayah tersebut belum dilakukan karena belum tersediannya data dan informasi tentang potensi tumbuhan obat, kurangnya pengetahuan masyarakat dalam mengembangkan tumbuhan obat, dan kurangnya sumberdaya manusia yang melakukan pengembangan tumbuhan obat di wilayah tersebut.
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Judul: Potensi Tumbuhan Obat di Desa Gunungsari, Kecamatan Sukanagara, Kabupaten Cianjur, Jawa Barat
Abstrak: Penggunaan tumbuhan obat masih sering dijumpai pada komunitas masyarakat sekitar hutan. Desa Gunungsari memiliki hutan yang dikelola oleh Perum Perhutani dimana masyarakat ikut terlibat dalam praktiknya. Aktivitas masyarakat di hutan mengindikasikan adanya pemanfaatan tumbuhan obat, namun belum diketahui bagaimana bentuk pemanfaatannya. Penelitian ini bertujuan untuk menganalisis keanekaragaman tumbuhan yang ada di hutan desa lalu mengidentifikasi tumbuhan obat dan potensi pengembangannya. Penelitian dilaksanakan dari November 2022 - Januari 2023 di Desa Gunungsari. Metode pengumpulan data menggunakan studi literatur, wawancara, serta analisis vegetasi digunakan untuk mencari data pemanfaatan oleh masyarakat, keanekaragaman vegetasi, serta potensi tumbuhan obat. Hasil menunjukkan terdapat 66 cara pemanfaatan tumbuhan obat oleh masyarakat, ditemukan 53 spesies dari 43 famili tumbuhan di hutan dengan 42 spesies diketahui memiliki khasiat obat, serta 10 diantaranya memiliki potensi untuk dikembangkan. Kata kunci: pemanfaatan, potensi, tumbuhan obat, The use of medicinal plants is still prevalent within forest communities. Gunungsari Village hosted a forest managed by Perum Perhutani, which involves community participation. The specific methods of how the people utilizing medicinal plants remain unclear. This research aims to analyze the botanical diversity within village forests and identify their medicinal potential. Carried out from November 2022 to January 2023 in Gunungsari Village, the research collected data through literature reviews, interviews, and vegetation analysis. This research revealed that the community employed 66 different methods of utilizing medicinal plants. There were 53 species from 43 different plant families identified, of which 42 were recognized for their medicinal properties. Furthermore, 10 of these species were identified as having significant potential for further development. Keywords: medicinal plants, potential, utilization
Keyword: pemanfaatan, potensi, tumbuhan obat

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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