Judul: Ethnophytomedic Comparison of the Tapos Village Community and Test the Efficacy of Medicinal Plants from Literature Studies
Abstrak: Keanekaragaman jenis tumbuhan obat di Kampung Tapos berpotensi untuk dikembangkan. Namun kajian tumbuhan obat masih belum banyak dilakukan. Penelitian ini bertujuan membandingkan etnofitomedika Kampung Tapos dan studi pustaka uji khasiat tumbuhan obat. Penelitian ini diharapkan dapat memberikan referensi untuk penelitian selanjutnya dan sebagai acuan dalam upaya peningkatan pemahaman masyarakat tentang tumbuhan obat. Penelitian dilaksanakan bulan April sampai Oktober 2020 di Kampung Tapos dan secara daring. Metode pengumpulan data melalui beberapa tahapan, yaitu studi pustaka, observasi, wawancara tidak terstruktur, dan dokumentasi. Hasil penelitian ini, sebanyak 99 jenis tumbuhan obat didominasi habitus herba sebanyak 39%. Bagian yang paling banyak dimanfaatkan yaitu daun sebanyak 60% dan sebanyak 59% merupakan tumbuhan obat budidaya. Sebagian besar jenis tumbuhan digunakan untuk menyembuhkan kelompok penyakit saluran pencernaan sebanyak 23 jenis tumbuhan. Masyarakat Kampung Tapos masih mempertahankan kearifan lokal dalam memanfaatkan tumbuhan obat. Sebagian pengetahuan masyarakat telah sejalan dengan hasil penelitian ilmiah. Kata kunci : etnofitomedika, Kampung Tapos, tumbuhan obat, The diversity of medicinal plants in Tapos Village has the potential to be developed. However, there are not many studies were done on medicinal plants. This study aims to compare the ethnophytomedics of Tapos Village and literature studies on the efficacy of medicinal plants. This research is expected to provide a reference for further research and as a reference in efforts to increase public understanding of medicinal plants. The research was conducted from April to October 2020 in Tapos Village and online. The method of collecting data through several stages, namely literature study, observation, unstructured interviews, and documentation. The results of this study, as many as 99 types of medicinal plants dominated by herbal habitus as much as 39%. The most widely used part was leaves as much as 60% and as much as 59% were cultivated medicinal plants. Most types of plants are used to cure a group of 23 types of digestive tract diseases. The people of Kampung Tapos still maintain local wisdom in utilizing medicinal plants. Some of the people's knowledge has been in line with the results of scientific research. Keywords : ethnophytomedicine, Tapos Village, medicinal plants
Keyword: Ethnophytomedicine, Tapos Village, Medicinal plants

Judul: Pengembangan Tumbuhan Obat Keluarga Melalui Peran Serta Masyarakat (Studi Kasus di Kampung Gunung Leutik Desa Benteng, Kecamatan Ciampea Bogor)
Abstrak: Health is a crucial aspect to reach family and social welfare. Unfortunately, it is still difficult for some people to access health services and modern medicines. The alternative solutions are needed to solve health problems. One of the best solutions is back to the nature by consuming natural medicines obtained from medicinal plants, which is relatively safer and cheaper. Therefore people need to understand about the potencies and benefits of medicinal plants surround them in order to build community’s interest on natural medicines and develop family’s medicinal plants. The objective of this research is identifying the medicine plant potency which can be developed to increase the family health independently, searching knowledge, using and cultivating the family’s medicinal plants as a medicine facility and family health preservation. This study was conducted during May until June 2009 in Gunung Leutik Village, Ciampea Subdistrict, Bogor. Materials and tools that were used such documents from certain institutions; map; camera; questioner related to the community’s knowledge, utilization and cultivation of medicinal plants and writing equipments. This research was conducted in May until June 2009 at Kampung Gunung Leutik, Benteng Village, Kecamatan Ciampea, Bogor. Materials and devices that needed in this research are: documents from many instances, map, camera, questionnaire for citizen of Gunung Leutik in the relationship with knowledge, usage and cultivation of medicine plant, writing tools. Gunung Leutik Village possesses big medicinal plants potencies that consist of 216 species, 70 family spread at 6 RT. Based on habitat typology, the potencies of medicinal plants are mostly found at house yards and gardens. The habitus is dominated by herbs. Leaves and roots are parts of plants that mostly used. The potencies of medicinal plants in Gunung Leutik village are able to be used for treating 25 kinds of illness. The potencies of medicinal plants are not used optimally yet. Out of 216 species of medicinal plants, only 45, 37% was known by people, 21, 76% was usually used and 26, 85% was cultivated. One of solution to develop family’s medicinal plants is cultivating important medicinal plants. It is hopefully, the family’s medicinal plants will be used properly to maintain family’s and community’s health toward better quality of life.
Keyword: 

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.
Keyword: