Judul: Keanekaragaman dan Sebaran Satwa Primata di Taman Nasional Tesso Nilo yang Berbatasan dengan Kebun Kelapa Sawit PT. Inti Indosawit Subur, Ukui, Riau
Abstrak: Tesso Nilo National Park is lowland forest area which still having a high biodiversity, one of them is primates. Location of This national park in encircling by palm plantation area and industrial forest (HTI). This hardly having an effect or affecting for existence of wildlife especially primates. Number of residents that is increasingly increases has increased requirement would various land resources, so that many forests converted to fulfill requirement of area of settlement, agricultural land, plantation and industry crop forest resulting to decrease and the happening of fragmentation of habitat. PT. Inti Indosawit Subur is one of palm plantation company which close at Tesso Nilo National Park. This company also experiences problem which caused by the entry of primates like longtailed and pigtailed macaques to areal plantation and eats of palm-kernel. Sees from the problems hence required [by] this study. The aims of the study were to identify biodiversity and distribution of primate, and characteristics of habitat in Tesso Nilo National Park. Areal becoming research area with a wide 13.500 ha, that a third expansion of Tesso Nilo National Park and made 1% intensitas sampling so just 135 ha had become sample plot area of researching. In such a way that observations were made in seven artificial traffic lane, on the Tesso Nilo National Park abuted on palm plantation of PT. Inti Indosawit Subur with 2 km long to each and width 100 m, this observation using line transect method (Stripe Transect) for inventory of primate and vegetation analysis. This study was conducted on March to May 2008. Data analysis was conducted using Minitab 13 and Microsoft Excel for Windows 2007. Primates finding 5 species such as long-tail macaque, mitred leaf monkey, ebony leaf monkey, agile gibbon, and siamang in Tesso Nilo National Park. And the distribution of primate dispersed as group (agregatif). Vegetation analysis at tree stand, pillar, stake and seedling it is gotten that amounts species identified 111 plant types which is including 43 set of relativeses. Vegetation types which at most found is from set of relatives Dipterocarpaceae with number of plant types 25 species. for level of tree, important and dominant type with value INP is plant type Resak (Vatica spp.) INP 61,31%, At growth level of pillar species which important and is dominant is type Jejambu (Eugenia spp.) INP 80,97%. At growth level of important and dominant species stake is Jejambu (Eugenia spp.) INP 57,98%. At growth level of seedling species which is dominant is Kelat (Gonystylus forbesii) INP 84,81%. Totality condition of Tesso Nilo forest as habitat of primates in danger. It is because disturbance from illegal logging and illegal farming that doing by local people.
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Judul: Prospek Pengembangan Ekowisata Primata di Taman Nasional Danau Sentarum, Kalimantan Barat
Abstrak: Primata belum menjadi fokus dalam pengelolaan di Taman Nasional Danau Sentarum, maka dari itu diperlukan pengembangan ekowisata primata. Pengembangan ekowisata primata merupakan bentuk alternatif dari pengelolaan satwa liar. Penelitian ini dilakukan di Taman Nasional Danau Sentarum di wilayah Resort Lupak Mawang, Semangit dan Resort Sepandan yang bertujuan untuk menilai potensi primata dan kondisi lingkungan untuk pengembangan ekowisata primata dan menyusun prospek pengembangan ekowisata primata di Taman Nasional Danau Sentarum. Penelitian menggunakan metode observasi langsung dan studi pustaka. Metode analisis yang digunakan adalah ADO-ODTWA yang telah dimodifikasi dengan konsentrasi pada primata dan analisis deskriptif. Prospek pengembangan ekowisata primata di Resort Lupak Mawang, Resort Semangit dan Resort Sepandan memiliki nilai indeks potensi ekowisata primata masing-masing sebesar 83,56%, 80,86%, dan 87,44% dengan kategori layak untuk dikembangkan. Resort Sepandan memiliki nilai tertinggi yang dapat dijadikan sebagai rekomendasi prioritas dalam pengembangan ekowisata primata karena selain potensi yang dimiliki di dalam kawasan terdapat potensi yang dimiliki di luar kawasan, sehingga untuk memaksimalkan potensi yang dimiliki diperlukan pengembangan ekowisata primata., Primates have not become a focus in the management of Danau Sentarum National Park, therefore it is necessary to develop primate ecotourism. The development of primate ecotourism is an alternative form of wildlife management. This research was conducted in Danau Sentarum National Park in the area of Resort Lupak Mawang, Resort Semangit and Resort Sepandan which aims to assess the potential of primates and the environment for the development of primate ecotourism and develop prospects for the development of primate ecotourism in Danau Setarum National Park. The research using direct observation and study methods. References. The analytical method used is the ADO-ODTWA which has been determined with a concentration on primates and descriptive analysis. The prospect of primate ecotourism development at the Lupak Mawang Resort, Semangit Resort and Sepandan Resort has a primate ecotourism potential index value of 83,56%, 80,86%, and 87,44%, respectively, with a feasible category for development. The Sepandan Resort has the highest value that can be used as a priority recommendation in the development of primate ecotourism because in addition to the potential possessed in the area, there is potential outside the area, so as to maximize the potential needed in the development of primate ecotourism.
Keyword: Danau Sentarum National Park, primates, primate ecotourism development

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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