Judul: Bioprospection and Conservation of Lontar (Borassus flabellifer Linn.) Based on Science and Technology of Local Community in Jeneponto Regency, South Sulawesi
Abstrak: Lontar (Borassus flabellifer Linn.) merupakan flora identitas Provinsi Sulawesi Selatan yang ditetapkan berdasarkan Surat Keputusan Menteri Dalam Negeri No 48 Tahun 1989. Lontar memiliki nilai sejarah, budaya, sosial yang panjang bagi Kerajaan Gowa dan Provinsi Sulawesi Selatan. Kabupaten Jeneponto salah satu wilayah penyebaran lontar terbanyak di Sulawesi Selatan. Masyarakat Jeneponto terkhusus di Kelurahan Pabiringa telah lama memanfaatkan lontar untuk kebutuhan kesehariannya. Belum adanya dokumentasi dikhawatirkan pengetahuan lokal yang dimiliki masyarakat akan hilang tergerus zaman. Penelitian ini bertujuan mengidentifikasi potensi pemanfaatan dan distribusi lontar, mengidentifikasi peran IPTEK modern saat ini dalam peningkatan nilai jual lontar di Kelurahan Pabiringa untuk mendukung IPTEK lokal masyarakat Kelurahan Pabiringa yang ada, mengidentifikasi strategi konservasi yang tepat dilakukan. Penelitian dilakukan pada Bulan Desember 2020 sampai September 2021, dengan metode wawancara, esplorasi, dan analisis vegetasi kemudian datanya dianalisis berdasarkan pada stimulus AMAR (Alamiah, Manfaat, dan Rela). Masyarakat Kelurahan Pabiringa memanfaatkan lontar hampir semua bagian kecuali akar. Produk turunan yang dibuat berupa: gula merah lontar, tuak (ballo’ kacci), tuak manis (ballo te’ne), cuka, keranjang, sarung golok, bakul, atap, dan batangnya untuk membangun rumah. IPTEK modern saat ini mendukung IPTEK lokal masyarakat yang telah ada dalam peningkatan nilai jual lontar dalam bidang pangan, farmasi, arsitektur, kerajinan tangan, dan bahan bakar. Total 29 pembuat gula yang ada tersebar di 4 lingkungan. Hasil analisis vegetasi habitat lontar ditemukan 54 jenis dari 27 famili sehingga Indeks H’ 1,80, Indeks E 0,45, dan Indeks R 6,39. Strategi yang tepat dilakukan berdasarkan analisis AMAR yaitu: edukasi dan pemberdayaan masyarakat, peningkatan nilai jual lontar, budidaya lontar secara berkelanjutan, intensnya penelitian lontar, serta bantuan dana yang cukup untuk semua stakeholder. Pihak yang berkepentingan pada kelestarian lontar dan kesejahteraan masyarakat yaitu: Masyarakat Pabiringa, akademika/ peneliti, pemerintah/ LSM, dan pengusaha., Lontar (Borassus flabellifer Linn.) is the identity flora of South Sulawesi Province which was determined based on the Decree of the Minister of Home Affairs No. 48 of 1989. Lontar has a long historical, cultural, social value for the Kingdom of Gowa and the Province of South Sulawesi. Jeneponto Regency is one of the most widely distributed lontar areas in South Sulawesi. The Jeneponto people, especially in the Pabiringa Urban Village, have long used lontar for their daily needs. The absence of documentation is feared that local knowledge owned by the community will be lost with time. This study aims to identify the potential use and distribution of lontar, to identify the current role of modern science and technology to increases the selling value of lontar in the Pabiringa Urban Village to support the local science and technology of the existing Pabiringa Urban Village community, to identify the appropriate conservation strategy to do. The study was conducted from December 2020 to September 2021, using interview, exploration, and vegetation analysis methods and then the data were analyzed based on the AMAR stimulus (Natural, Beneficial, and Willing). The people of Pabiringa Urban Village use lontar in almost all parts except the roots. The derivative products made are palm sugar, palm wine (ballo' kacci), sweet wine (ballo te'ne), vinegar, baskets, machete gloves, baskets, roofs, and stems to build houses. Modern science and technology
Keyword: Aksara Lontarak, Kelurahan Pabiringa, Konservasi, Lontar (Borassus flabellifer Linn.), Stimulus AMAR (Alamiah, Manfaat, Rela)

Judul: Pemanfaatan Sumberdaya Tumbuhan dan Hewan oleh Masyarakat di Kecamatan Lingga Utara, Kabupaten Lingga, Kepulauan Riau
Abstrak: Etnobotani merupakan ilmu yang mempelajari dan menjelaskan tentang pemanfaatan dan pengelolaan tumbuhan secara tradisional oleh masyarakat terhadap lingkungan sekitarnya. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis potensi pemanfaatan jenis tumbuhan dan satwa oleh masyarakat serta mengidentifikasi dan mendeskripsikan bentuk-bentuk pemanfaatan tumbuhan dan satwa berdasarkan kearifan lokal oleh masyarakat di Kabupaten Lingga Utara. Penelitian ini dilaksanakan pada bulan Agustus 2022 di Desa Sungai Besar, Desa Resun dan Desa Limbung. Masyarakat Kecamatan Lingga Utara sebanyak 23,53% berprofesi nelayan, wilayah yang berada di pulau dan dikelilingi lautan menjadikan potensi sumber daya laut sebagai mata pencaharian utama. Padi sebagai sumber karbohidrat utama dan sagu digunakan sebagai bahan baku pembuatan berbagai makanan. Ditemukan pemanfaatan tumbuhan dan hewan yang telah dilakukan secara turun temurun baik yang diperoleh dari alam maupun hasil budidaya, yaitu sebanyak 238 jenis tumbuhan dari 82 famili dan sebanyak 80 jenis hewan yang ditemukan dan dimanfaatkan oleh masyarakat., Ethnobotany is a science that studies and explains the traditional use and management of plants by the community towards the surrounding environment. This study aims to identify and analyze the potential use of plant and animal species by the community and identify and describe the forms of plant and animal use based on local wisdom by the community in North Lingga Regency. This research was conducted in August 2022 in Sungai Besar Village, Resun Village and Limbung Village. As many as 23.53% of the people of North Lingga District work as fishermen, the area located on the island and surrounded by the sea makes the potential of marine resources the main livelihood. Rice is the main source of carbohydrates and sago is used as raw material for making various foods. It was found that the use of plants and animals has been carried out for generations both obtained from nature and cultivation, namely 238 species of plants from 82 families and 80 species of animals found and utilized by the community.
Keyword: animals, north  lingga district, plants

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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