Judul: Keberhasilan Reproduksi Tapir Asia (Tapirus indicus) Di Kebun Binatang Di Dunia
Abstrak: The aim of this study was to analyze reproduction datas of malayan Tapir (Tapirus indicus) which spread in the zoos world wide and recorded in International Malayan Tapir Studbook which were marriage season pattern, amount of birth, offspring survival, and life expectation. Tapirs recorded in International Malayan Tapir Studbook until July 2009 were 921 heads, with tapirs bornt in conservation were 540 heads. Cubs were born all year round without following certain season (nonseasonal). The result showed that tapir has low dead give-birth level (stillbirth 0,0-7,93%) and high give-birth potention (1 head every 2 years) so the population can be increased by good management practices.
Keyword: 

Judul: Perilaku Beranak pada Tapir Asia (Tapirus indicus) di Taman Safari Indonesia Jawa Barat.
Abstrak: Penelitian ini bertujuan untuk mengamati tingkah laku beranak pada tapir asia (Tapirus indicus). Tingkah laku diamati melalui rekaman CCTV kandang dengan metode ad libitum sampling dari tiga induk tapir asia. Tingkah laku yang diamati yaitu saat beranak yang meliputi perilaku berbaring dan berdiri induk saat pengeluaran fetus, kontraksi beranak dan posisi beranak. Setelah itu, dilakukan juga pengamatan waktu awal induk mulai menjilati anak setelah beranak, bagian tubuh anak pertama dijilati,dan tingkah laku induk dalam menjilati anak. Hasil penelitian menunjukkan bahwa induk tapir cenderung dalam keadaan berbaring saat pengeluaran fetus dan sebagian besar induk pada posisi berbaring saat anak lahir. Kontraksi beranak pada ketiga induk tapir meningkat saat pengeluaran anak dan mengalami penurunan saat tahap pengeluaran plasenta atau setelah anak lahir. Waktu awal induk mulai menjilati anak setelah beranak adalah 39–106 detik setelah anak lahir. Induk segera menjilati anak dimulai dari bagian kepala. Ketiga induk tapir beranak secara normal dan menunjukkan sifat keindukan yang baik.
Keyword: kontraksi beranak, penjilatan, tapir asia, tingkah laku beranak

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: