Judul: Kecacingan pada Kukang Sumatera (Nycticebus coucang) di Pusat Rehabilitasi Satwa Primata Yayasan International Animal Rescue Indonesia (YIARI)
Abstrak: According to the International Union Conservation of Nature and natural Resources (IUCN), Sumateran slow loris (Nycticebus coucang) is protected primates which was vulnerable animal. Their population in wildlife decreased cause hunting for trade and destructive habitat. Helminthiasis can caused dead regularly and its so identification of this disease needed. The study was conducted to know prevalence of gastrointestinal helminth infection of slow loris (Nycticebus coucang) in The Center of Primate Rehabilitation of International Animal Rescue Indonesia (YIARI). Total of 13 fecal sampel from captive group of Nycticebus coucang were collected for 6 days and analysed from February-May 2014 by using McMaster, flotation and Baermann technique to identified morphology of the eggs. All fecal sampel was examined based on its fecal pool. Out of 13 fecal sampel examined, all of sampel (100%) was infected with five types of helminth Ascaris (84,61%), Hymenolepis (76,92%), Strongylid (61,54%), Oxyuris (15,38%) and Trichuris (7,69%). The average number of egg per gram (EPG) was 11-1555.
Keyword: Bogor Agricultural University (IPB), slow loris, prevalence, parasite, Nycticebus coucang, helminth, fecal

Judul: Kecacingan pada Kukang Jawa (Nycticebus javanicus) di pusat rehabilitasi satwa primata Yayasan International Animal Rescue Indonesia (YIARI)
Abstrak: Conservation medicine is an emerging discipline that links to human and animal health, ecosytem health, and global environmental change. Recently, Javan Slow Loris is an endemic primates which is continuously hunted, which lead to decline of its population in its natural habitat. The goal of this research is to study the gastrointestinal helminths infection of Javan Slow Loris and infection intensity from pooled fecal samples in diagnostic laboratory of International Animal Rescue Indonesia from February-May 2014. Eleven pooled fecal samples from different cages are collected for 6 times were used. Samples were examined using the modified McMaster, flotation, and the modified sedimentation techniques was used to determine the intensity of helminth infections among the cages.Numerous well preserved eggs were examined from the point of view of morphology. Our result showed that all of cages were infected by two types of helminths: cestode and nematode including Hymenolepis sp., Ascaris, Strongyloides, and Strongylid.
Keyword: Nycticebus javanicus, helminthiasis, concervation medicine, Bogor Agricultural University (IPB)

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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