Judul: Studi Kasus Ketonuria Berdasarkan Urinalisis Semikuantitatif Strip-Test Pada Sapi Perah Di Peternakan Kunak Bogor
Abstrak: Kesehatan hewan merupakan aspek penting dalam meningkatkan produksi susu sapi perah. Salah satu tantangannya adalah bagaimana petugas di lapangan dapat menerapkan pendiagnosaan secara praktis. Untuk itu dilakukan penelitian berbasis studi kasus menggunakan urinalisis semikuantitatif strip-test terhadap 30 sapi perah di Peternakan KUNAK Bogor. Hasil pengamatan menunjukkan 2/30 hewan mengalami ketonuria. Mengingat ketonuria erat kaitannya dengan penggunaan energi cadangan, dalam penelitian ini dilakukan pemeriksaan Body Condition Score (BCS) dan pengukuran frekuensi pernapasan dan nadi. Hasil pengamatan menunjukkan bahwa sapi perah ketonuria memiliki nilai BCS 1.5 (kurus) dan peningkatan frekuensi pernapasan dan frekuensi nadi. Peningkatan frekuensi pulsus dan nadi ini merupakan indikasi peningkatan metabolisme. Studi kasus ini memberikan perspektif baru bahwa sapi perah kurus dapat mengalami ketosis selain sapi perah gemuk. Dalam konteks ini urinalisis menggunakan striptest merupakan metode yang efektif untuk mendiagnosa status kesehatan hewan. Adapun hewan yang mengalami gangguan keseimbangan energi beru ketonuria perlu di antisipasi dengan perbaikan nutrisi.
Keyword: Ketonuria, Sapi Perah, BCS, Urinalisis Strip-test

Judul: Studi Kasus Proteinuria pada Sapi Perah di Kawasan Usaha Peternakan Cibungbulang, Bogor.
Abstrak: This research aims to study the proteinuria in dairy cows in Region Livestock enterprises (Kunak) Cibungbulang, Bogor, as a guarantee of health status to fulfill the needs of fresh milk in Indonesia. A total of 30 dairy cows were examined using semi-quantitative test strips, three cows that are not pregnant have proteinuria accompanied by increased frequency of pulsus. A total of three dairy cows proteinuria, one of whom suffered pyuria, hematuria, and glucosuria. Results were analyzed using a table of diagnosing disorders prerenal, renal, and Postrenal, dairy cows are thought to potentially suffer from glomerulonephritis, glomerulosclerosis, interstitial nephritis or urolithiasis. This study provides justification for the effective use of semi-quantitative urine test strips.
Keyword: dairy cattle, proteinuria, pyuria, hematuria, glucosuria

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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