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: Habitat Analysis of Kulim (Scorodocarpus borneensis Becc.) In the Core Zone and Jungle Zone of Tesso Nilo National Park, Riau
Abstrak: Taman Nasional Tesso Nilo ditetapkan sebagai kawasan pelestarian alam berdasarkan Surat Keputusan Menteri Kehutanan RI Nomor SK.6588/Menhut-VII/KUH/2014, dengan luas 81.793 ha. Penelitian ini bertujuan untuk mengidentifikasi habitat Kulim (S. borneensis) meliputi komponen biotik dan abiotik. Habitat kulim berada di tanah lempung berpasir dan pasir berlempung yang berwarna cokelat kekuningan dengan kadar air rata-rata 28,19 dan pH 4,25 (asam). Komponen habitat kulim di Taman Nasional Tesso Nilo Riau meliputi kisaran ketinggian 40 mdpl - 118 mdpl, topografi agak landai hingga terjal, suhu rata-rata 27,31 ˚C, kelembaban 86,92 % dan intensitas cahaya berkisar 208,75 – 2.960,25 Lux. Dominansi vegetasi di sekitar kulim oleh vegetasi semai, pancang, tiang dan pohon adalah jenis Kelat merah (Syzygium claviflorum) dengan INP 34,425%; 15,986%; 22,382%; dan 29,741%. Pohon kulim di kawasan Taman Nasional Tesso Nilo memiliki indeks kekayaan yang tergolong tinggi dan indeks keanekaragaman tergolong sedang hingga tinggi. Jenis yang terdapat dalam komunitas tumbuhan di habitat kulim tersebar merata., Tesso Nilo National Park is a nature conservation area based on the Decree of the Minister of Forestry of the Republic of Indonesia SK. Number 6588 / Menhut-VII / KUH / 2014, with an area of 81.793 ha. This study aims to identify the habitat of Kulim (S. borneensis) including biotic and abiotic components. The habitat of kulim is in sandy loam soils and loamy sand which is yellowish brown with an average water content of 28.19 and a pH of 4.25 (acid). The abiotic component of the culm in Tesso Nilo National Park includes an altitude range of 40 masl - 118 masl, a slightly sloping to steep topography, an average temperature of 27.31˚C, a humidity of 86.92% and a light intensity ranging from 208.75 to 2 960.25 Lux. The dominance of the vegetation around the culms by the vegetation of seedlings, saplings, poles and trees was the type of red chelate (Syzygium claviflorum) with an IVI value of 34.425; 15.986; 22.382; and 29.741. Kulim tree in the Tesso Nilo National Park area has a relatively high wealth index and a moderate to high diversity index. The species found in the plant community in the kulim habitat are evenly distributed.
Keyword: habitat, kulim, TNTN

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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