Judul: Penerapan biosekuriti dan higiene di tempat penjualan daging ayam di Jakarta Barat
Abstrak: This study is aimed to observe the application of biosecurity and hygiene in the poultry meat marketplace (PMM) in West Jakarta assessed by using checklist which was developed from audit checklist of veterinary establishment number (Nomor Kontrol Veteriner/NKV). The audit has been conducted with observation method in PMM which are resgitered in the district office for livestock and fisheries in West Jakarta. The study involved 104 PMMs which consisted of 91 PMMs in traditional markets at 8 subdistricts and 13 supermarkets which were selected from each subdistrict (excluding Tambora). The elements of biosecurity and hygiene which were assessed included location, building and facilities, hygiene of carcass handling, equipments, building and equipments sanitation, personal hygiene, waste disposal management and environmental sanitation. The results showed that the biosecurity and hygiene practices of PMMs in supermarket in West Jakarta were categorized as good (23.1%) and moderate (76.9%). Meanwhile, the biosecurity and hygiene practices of PMMs in the traditional market were categorized as moderate (18.7%) and poor (81.3%). This condition should be highly considered related to food safety and environmental health.
Keyword: Biosecurity, Hygiene, The poultry meat marketplace

Judul: Studi Knowledge, Attitude, and Practice (KAP) Higiene dan Sanitasi Pedagang Daging Ayam di Pasar Tradisional di Provinsi DKI Jakarta
Abstrak: Chicken meat as a source of animal protein is very popular and common in Indonesia, including in Jakarta. Chicken meat is easy to find and its price is relatively cheaper than beef meat. Traditional markets are the most common place for Indonesian people to buy their needs, especially food. One of factors affecting the safety and quality of fresh chicken meat is application of hygiene and sanitation in markets. The aims of this study were to observe the knowledge, attitude, and practices of chicken meat vendors and to evaluate the level of hygiene and sanitation of chicken carcass at vendors in traditional markets in the Province of DKI Jakarta and correlated to each variables. This study was conducted by cross-sectional using questionnaires for interview respondents and observation on practices of hygiene and sanitation. The respondents were chicken meat vendors who traded in the traditional market in five districts in the Province of DKI Jakarta. Total of 217 respondents was involved in this study. The study used cluster random sampling method for identification the market and identification of sample cluster was done using probability proportional to size method. The data were analyzed descriptively and the association among variables was determined with gamma tests. Most of respondents (n=209; 96.3%) had knowledge categorized from moderate to good. There was no respondents whose attitude were categorized as bad, they were categorized in attitude as moderate (n=72; 33.2%) and good (n=145; 66.8%). Most of respondents (n=174; 80.2%) was categorized as moderate in practices of hygiene and sanitation. Further analysis showed that the educational levels were significantly correlated with knowledge (p<0.05), experiences were significantly correlated with the knowledge, and age was significantly correlated with the attitudes (p<0.05). The significant associations (p<0.05) were also showed between knowledge and attitude and then attitude and practice.
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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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