Judul: Infeksi Cacing Gastrointestinal Pada Macan Tutul Jawa (Panthera Pardus Melas) Di Pusat Penyelamatan Satwa Cikananga Dan Situgunung Park
Abstrak: Macan tutul jawa (Panthera pardus melas Cuvier, 1809) merupakan satwa karnivora endemik Indonesia yang hanya terdapat di Pulau Jawa. Spesies ini dinyatakan terancam punah, sehingga tindakan konservasi diperlukan bagi Macan tutul jawa. Penelitian ini bertujuan untuk mengidentifikasi dan menghitung persentase serta derajat infeksi cacing parasit gastrointestinal pada Macan tutul jawa di lembaga konservasi ex-situ di Pusat Penyelamatan Satwa Cikananga (PPSC) dan kawasan in situ di Situgunung Park, Taman Nasional Gunung Gede- Pangrango (TNGGP). Sebanyak 4 sampel tinja dikumpulkan dari PPSC pada bulan Januari-Februari 2014 dan 3 sampel tinja dari Situgunung Park pada bulan Mei 2013 dan Maret-Juni 2014. Analisis sampel tinja dilakukan dengan menggunakan metode modifikasi McMaster, flotasi sederhana, dan penyaringan bertingkat. Hasil penelitian menunjukkan bahwa seluruh sampel terinfeksi cacing gastrro-intestinal. Jenis cacing yang ditemukan beserta masing-masing persentase infeksinya adalah strongylid (85.71%), diikuti oleh trichurid dan ascarid (57.14%) serta Strongyloides (28,57%) dengan persentase terendah. Kisaran derajat infeksi kecacingan pada Macan tutul jawa di PPSC adalah <50–8825 telur per gram tinja (TTGT). Jumlah TTGT tertinggi pada strongylid (<50-8825 TTGT) di PPSC, diikuti oleh trichurid (<50–3400 TTGT) di PPSC dan Strongyloides (700-1100 TTGT) di SGP. Jumlah TTGT terendah pada ascarid (<50 TTGT) yang ditemukan di PPSC dan SGP.
Keyword: cacing gastrointestinal, Macan tutul jawa, TTGT

Judul: Infeksi cacing gastrointestinal pada Macan Tutul Jawa (Panthera pardus melas) di Pusat Penyelamatan Satwa Cikananga dan Situgunung Park
Abstrak: Javan leopard (Panthera pardus melas Cuvier, 1809) is an endemic species of Indonesia that can only be found in Java island. This species is stated as critically endangered, so that the conservation act is needed to save Javan leopard. The objective of this research is to identify and determine the infection and the intensity of the gastrointestinal helminths in Javan leopard from Pusat Penyelamatan Satwa Cikananga (PPSC) and Situgunung Park, Taman Nasional Gunung Gede Pangrango (TNGGP). Four individual stool samples were collected from PPSC on Januari-Februari 2014 and 3 stool samples were collected from Situgunung Park, TNGGP on May 2013 and March-June 2014. All samples were examined using modified McMaster, flotation, and modified sedimentation techniques. The result showed that all samples were infected by gastro-intestine helminths. The identified helminths were strongylids (85,71%), trichurid and ascarids (57,14%) and Strongyloides (28,57%). The range of eggs per gram (EPG) varied from <50-8825 EPG. The highest count were found in strongylid (<50- 8825 EPG) in PPSC, followed by trichurid (<50-3750 EPG) in PPSC and Strongyloides (700-1100 EPG) in SGP. The lowest count was ascarid (<50 EPG) which was found in PPSC and SGP.
Keyword: Bogor Agricultural University, gastrointestinal helminths, Javan leopard, EPG

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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