Judul: Overview of Broiler Chicken Slaughtering Result Sold at Traditional Markets in Bogor
Abstrak: Penelitian ini bertujuan untuk mendeskripsikan kesempurnaan proses penyembelihan ayam broiler yang dijual di pasar tradisional di Kota Bogor. Sebanyak 475 sampel dibeli dari 95 pedagang yang berada di dalam dan di luar kios. Sampel dipreparir menggunakan alat bedah minor untuk mengidentifikasi saluran trakea, esopagus, dan kedua arteri carotis interna. Jumlah penyimpangan penyembelihan yang terjadi sebanyak 361 sampel (76%). Penyimpangan penyembelihan yang terdapat di dalam kios sebesar 39%, sedangkan penyimpangan yang terjadi di luar kios sebesar 37%. Hasil yang diperoleh menunjukkan buruknya proses penyembelihan. Penelitian ini diharapkan dapat memberikan informasi kepada pengambil kebijakan dan pengawas terkait keamanan dan kelayakan pangan tentang teknik penyembelihan yang baik dan benar pada ayam broiler.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Broiler chicken, Neck cutting, Traditional market, Arteri carotis interna, Proses penyembelihan, Kelayakan pangan, Cutting, Alat bedah minor, Identify trachea

Judul: Overview of Broiler Chicken Slaughtering Result Sold at Tradisional Markets in Jombang.
Abstrak: This study was aimed to determine the misslaughter of the broiler chicken slaughtering process sold at traditional market of Jombang, East Java. 450 samples were obtained from 90 traders; consisting of 44 traders in market 1, 22 traders in market 2 and 24 traders in market 3. The samples fixated with 10% formalin solution and prepared using a minor surgical instruments kit to identify the trachea, esophagus, and two internal carotid artery. This study showed that 168 samples (37.3%) did not meet the requirements for halal slaughter according to SNI N0.99002 2016 about halal slaughtering in poultry. Misslaughter were found on 81 samples (36.8%) from market 1, 24 samples (20%) from market 2, and 63 samples (57.3%) from market 3. Misslaughtered samples shows unfinished cut of the left internal carotid artery, right internal carotid artery, left and right internal carotid artery, and trachea and left internal carotid artery. Most case of misslaughter found was the unfinished cut of the left internal carotid artery by 94 samples (20.9%). The results of sample observations and questionnaire data collection showed that the high imperfections of slaughter results were found on the market applying method 1, namely the method of left hand holding wings and head, right hand slaughtering. In addition, the size of the chicken and the training of the slaughterer also affect the high imperfection of slaughter results. So it can be concluded that the imperfection of the chicken slaughter process in Jombang Regency is influenced by the slaughter method used, the size of the chicken and the training of the slaughterer.
Keyword: roiler chicken, slaughtering, traditional market

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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