Judul: Hygiene  and  sanitation  at  slaughter  location  during  idul  adha  festival  in  DKI  Jakarta
Abstrak: Penelitian ini bertujuan untuk mempelajari gambaran mengenai kondisi higiene dan sanitasi tempat pemotongan hewan kurban, gambaran tingkat kontaminasi mikroba pada daging hewan kurban serta melihat hubungan antara praktik higiene dan sanitasi terhadap kontaminasi mikroba pada daging hewan kurban. Data yang digunakan dalam penelitian ini merupakan data sekunder hasil pemeriksaan kesehatan hewan dan daging hewan kurban yang dilakukan oleh Fakultas Kedokteran Hewan Institut Pertanian Bogor (FKH-IPB) bekerjasama dengan Laboratorium Kesehatan Masyarakat Veteriner DKI Jakarta (Lab. Kesmavet DKI Jakarta). Responden berasal dari 46 tempat pemotongan hewan kurban di seluruh DKI Jakarta. Uji khi-kuadrat digunakan untuk mengetahui hubungan antara praktik higiene dan sanitasi tempat pemotongan terhadap kontaminasi mikroba dalam daging kurban. Hasil penelitian menunjukkan seluruh variabel tidak memiliki hubungan yang signifikan terhadap jumlah total mikroorganisme dan keberadaan E. coli pada daging (P value > 0.05)., The research was conducted to observe the hygiene and sanitation at slaughter location during Idul Adha festival in DKI Jakarta, microbial impurities rates in meat, and relation between hygiene and sanitation practices to microbial impurities rates in meat. The data that were used in this study was a secondary data from sacrifice animal health examination which have been done by Veterinary Medicine Faculty of Bogor Agriculture University in collaboration with Veterinary Public Health Laboratory in DKI Jakarta. Respondens were taken from 46 slaughtering locations in DKI Jakarta. Chi-square test was used to know the relation between hygiene and sanitation practices to microbial impurities rates in meat. The result showed that all variable was not given significant correlation against the total number of total microorganism and the presence of E. coli in meat (P value > 0.05).
Keyword: daging, Escherichia  coli, higiene, jumlah total mikroorganisme, sanitasi, tempat pemotongan hewan kurban

Judul: Kondisi Sanitasi Peralatan dan Tempat Pemotongan serta Tingkat Kontaminasi Mikrob dalam Daging Kurban di DKI Jakarta
Abstrak: The research was conducted to observe the sanitation of the equipments and locations of the sacrificial animal’s slaughter, microbial impurities rates in meat, and relation between sanitation practices of equipments and slaughtering location to microbial impurities rates in meat. Respondens were taken from 46 slaughtering locations in DKI Jakarta. Chi-square test was used to know the relation between sanitation practices of equipments and slaughtering location to microbial impurities rates in meat. They were 65.2% (30/46) location of sacrificial animal slaughter in Jakarta that had good equipment sanitation, but only 41.3% (19/46) locations with good location sanitation. The number of meat samples with total number of total microorganism below the SNI border in 2011 was 94% (204/217), meanwhile in 2012 the number was 96.25% (231/240). The number of meat samples with total E. coli below the SNI border in year 2011 was 95.4% (207/217), meanwhile in 2012 the number was 97.92% (235/240). The result showed there was a significant correlation between handling animal after slaughtering with the presence of E. coli in meat (P value < 0.05). It was concluded that handling animal after slaughtering by hanging could decrease the contamination of E. coli.
Keyword: sanitation, sacrifice animal, number of total microorganism, meat, Escherichia coli

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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