Judul: Overview of the Postpartum Drug Therapy in Local Farms at Kendal Regency from the Year 2019–2020
Abstrak: Kelahiran merupakan suatu proses keluarnya anak dari rahim (uterus) induknya setelah periode kebuntingan. Kebuntingan sapi umumnya berlangsung selama sekitar 275–285 hari. Periode setelah kelahiran sapi menjadi masa kritis untuk induk dan anak sapi yang baru lahir. Pemberian sediaan suportif pada masa ini meningkatkan proses persembuhan induk dan pertumbuhan anak. Penelitian ini dilakukan untuk mengetahui jenis-jenis sediaan suportif yang diberikan untuk sapi pascakelahiran di Kabupaten Kendal. Penelitian dilakukan menggunakan data sekunder. Jumlah kelahiran anak sapi di Kabupaten Kendal sebanyak 178 ekor dalam kurun waktu satu tahun. Hasil pengamatan menunjukkan bahwa antibiotik, vitamin, dan anthelmintik dipilih untuk terapi pascakelahiran. Antibiotik jenis penisilin dan streptomisin diketahui sebagai antibiotik yang sering digunakan sebagai terapi pascakelahiran di lapangan. Suplementasi vitamin B kompleks juga sering diberikan kepada sapi pasca melahirkan. Anthelmintik dan hormon diberikan ke sapi sebagai terapi penunjang pasca melahirkan di peternakan rakyat di Kabupaten Kendal., Parturition is a process of delivering the baby from the uterus of the mother after passing the gestation period. The gestation period in cows generally lasts for about 275–285 days. Postpartum period is a critical period for both cows and calves. The provision of supportive preparations at this period can improves the healing process of the cow and support growth of the calves. This study was conducted to determine the postpartum supportive therapy by using secondary data collected from local farms in Kendal Regency. The number of calves born in Kendal Regency was 178 heads in one year. The results showed that penicillin and streptomycin were the most frequently used antibiotics in postpartum therapy in the field. Vitamin B complex supplementation was also often given to postpartum cows. Anthelmintics were given to cows as supportive therapy after parturition at people's farms in Kendal Regency.
Keyword: anthelmintics, antibiotics, hormones, parturition, vitamins

Judul: Overview of The Therapy Used in Calf Diarrhea in Local Farms, Kebumen Regency during 2019-2020
Abstrak: Diare pada pedet atau anak sapi merupakan penyakit yang menyebabkan kerugian terbesar pada peternakan sapi. Gejala klinis yang paling umum pada sapi terkena diare adalah peningkatan frekuensi defekasi, penurunan konsistensi feses yang dihasilkan perubahan feses, dan kemunculan gejala dehidrasi. Beberapa faktor penyebab diare antara lain infeksi virus, bakteri, protozoa, dan kesalahan tatalaksana pemeliharaan. Penelitian ini bertujuan untuk mengkaji lebih dalam penanganan diare pada pedet serta kandungan obat terpilih di peternakan rakyat Kabupaten Kebumen. Metode yang digunakan adalah analisis data sekunder dari buku administrasi pasien harian dokter hewan di beberapa Kecamatan di Kabupaten Kebumen. Berdasarkan hasil penelitian dapat disimpulkan bahwa sediaan yang banyak digunakan dalam penanganan diare pada pedet adalah antibiotik, vitamin, obat tradisional, dan antihistamin. Jenis obat-obatan yang paling banyak digunakan dari masing-masing kelompok obat tersebut adalah penisilin dan streptomisin, vitamin Bkompleks, kunyit dan madu, difenhidramin HCL dengan presentase masing-masing sebesar 46, 56, 80 dan 81%., Diarrhea in calves is a disease that causes great economical losses in cattle farms. The most common clinical symptoms in cows with diarrhea are an increase in the frequency of defecation, a decrease in stool consistency, and dehydration. Some of the factors that cause diarrhea include viral, bacterial, protozoal infections, and mismanagement of maintenance. This research aimed to study more on the treatment of diarrhea in calves at the local’s farms in several Subdistricts in Kebumen Regency and the effectiveness of the drugs used in Kebumen Regency. The method used was secondary data analysis collected from veterinarians' daily patient administration books in several subdistricts in Kebumen Regency. This study aims to further analyze the treatment of diarrhea in calves and drugs chosen in the treatment at the local farms in Kebumen District. Method used in this study was analysis of secondary data obtained from patient records of several subdistricts in Kebumen District. It was concluded that drugs used in treatment of diarrhea in calves included antibiotic, vitamin, traditional medicine, and antihistamine. The most frequently prescribed drugs from each category were penicillin and streptomycin, vitamin B-complex, turmeric and honey, dipenhydramine HCL, with 46, 56, 80, and 81% respectively.
Keyword: antibiotic, calves, diarrhea, drug, therapy

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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