Judul: Studi patologi Q fever pada hewan kurban sapi di wilayah Jakarta Timur dan Jakarta Selatan
Abstrak: Query fever (Q fever) is one of the dangerous zoonoses. This research was to determined the existence of Coxiella burnetti, the agent of Q fever, in sacrificial cattle for Eid Adha in East and South Jakarta in 2011 and 2012. Ten samples of liver and seven samples of lung taken during Eid Adha in 2011 and 2012. The existence of Coxiella burnetii was determined by using immunohistochemistry stain. Histopahology of liver sample and lung sample was determined using Hematoxylin Eosin stain. This studi showed that one liver sample from South Jakarta in 2012 were positive Q fever and other samples were negative Q fever based on immunohistochemistry stain. All organ showed inflammatory cells, congestion and fibrosis.
Keyword: cattle, Eid Adha, immunohistochemistry, Q fever,, zoonoses

Judul: Studi Q Fever Pada Sapi ”Idul Adha” di Wilayah Jakarta Dengan Metode Imunohistokimia
Abstrak: Query Fever (Q Fever) is a zoonotic disease caused by bacteria Coxiella burnetii (C. burnetii). The reservoirs are extensive but only partially known as ruminants, mammals, poultry, pets, and tick which also act as a vector. The transmission of this disease commonly through inhalation but other transmission such as ingestion may possible. The objective of this study was to know the histopathological changes of cattle slaughtered during Eid Adha celebration and were diagnosed Q Fever using immunohistochemistry method. The research conducted in samples of Eid Adha 2011 indicated that 1 sample from North Jakarta was found positive in liver out of 7 samples (0.14%). Whereas in samples of Eid Adha 2012 the positive results were found in 2 samples (100%) each derived from West Jakarta in liver and North Jakarta in lungs. This result showed that Q Fever in cattle has spread, so the preventive and control action is important to do
Keyword: Cattle, Coxiella burnetii, Eid Adha, immunohistochemistry, Q Fever, zoonosis

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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