Judul: Penyediaan protein hewani untuk meningkatkan konsumsi Tikus Pohon dan Tikus Sawah terhadap rodentisida
Abstrak: Rat is one of the important pest to human life, both in the agricultural and plantation. Various tactics have been done to control rodent, one of them used poisonous bait (rodenticide). Attractiveness of bait is necessary because rats not prefer like taste of active ingredients of rodenticide. The aims of research to investigate the consumption rate of animal protein towards rodencitide, therefore it can increase the effective control to ricefield rats and wood rats. There are four trial in this research. Ricefield rats consumed more unhulled rice. Wood rats consumed more brown rice. Wood rats consumed more insect larvae than brown rice, otherwise ricefield rats consumed more unhulled rice. The consumption of ricefield rats to insect larvae showed no difference with brodifacoum, while wood rats showed difference. Consumption of ricefield rats to insect larvae showed difference to bromadiolone, while wood rats showed no difference.
Keyword: Bogor Agricultural University (IPB), wood rat., unhulled rice, ricefield rats, insect larvae, brown rice

Judul: Uji palatabiltas rodentisida antikoagulan terhadap tikus rumah (Rattus rattus diardii Linn.) dan tikus pohon (Rattus tiomanicus Mill.)
Abstrak: Rat is one of the wild animal which become necessary pest for human life in field of agriculture, plantation, and setlement. Rat assumed as pest because rat existence very bothering and generating loss. Rodenticide is on e of chemical control which usual use to decrease rat house (Rattus rattus diardii) and wood rat (R. tiomanicus). This research objective is knowing rodenticide palatability of brodifacoum, bromadiolone, and coumatetralyl for rat house and two formulation of brodifacoum rodenticide for wood rat at rice bait, shell of rice, and corn, rat’s weight alteration after treatment, and rat’s weight alteration during rest time. Methode of this test is feeding rodenticide which combined with bait ( bi choice test) and feeding bait without rodenticide (no choice test) for three days. After thrid day of treatment, r at taken a rest during three days and reuse for another treatment if in healthy condition. Amount of rodenticide and bait cosumption, rat’s weight alteration after treatment , and rat’s weight alteration during rest time is a variable perceived. Rat house prefer feed brodifacoum, bromadiolone, and coumatetralyl rodenticide within examination which feeding corn than feeding shell of rice bait and rice, feeding to rat house with prefer at the time of giving of maize bait than giving, while at wood rat of rodenticide blue brodifacoum and green brodifacoum less taken a fancy to in each giving of bait. Consumption bait shell of rice prefer by wood rat, however its amount do not differ from the amount of rice consumption, while maize bait represent more bait is in disfavour with both types of rat.
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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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