Judul: Evaluation of Effective Dose of Ketamine- Xylazine Combination Anesthesia in Pediatric Rats
Abstrak: Anestesi efektif mengurangi stres dan rasa sakit pada tikus dengan menghilangkan kesadaran. Kombinasi yang umum digunakan dalam penelitian adalah Ketamine dan Xylazine. Kombinasi ini telah banyak digunakan pada tikus dewasa dengan berbagai dosis, tetapi belum ada acuan dosis tepat untuk tikus pediatri. Penelitian ini bertujuan mendapatkan dosis anestesi dari kombinasi Ketamine-Xylazine yang efektif dan aman untuk tikus pediatri. Penelitian menggunakan 25 ekor tikus berumur 3 minggu yang dibagi menjadi 5 kelompok perlakuan, yaitu kelompok negatif dan 4 perlakuan dosis Ketamine (25, 50, 75, dan 100 mg/kg BB) dikombinasikan dengan Xylazine 4 mg/kg BB. Hasil penelitian menunjukkan efek anestesi tikus pediatri baru mulai muncul setelah pemberian dosis Ketamine 50 mg/Kg BB. Kondisi fisiologis (frekuensi jantung, frekuensi napas, dan suhu tubuh) mengalami penurunan pada 10 menit setelah injeksi anestesi dan seiring waktu berangsur kembali ke normal. Pada dosis yang tinggi (100 mg/kg BB), terjadi kematian pasca injeksi dengan tingkat kematian 40%. Dosis anestesi Ketamine-Xylazine yang disarankan adalah 50–75/4 mg/kg BB.
Keyword: rat, xylazine, pediatric, dose, ketamine

Judul: Potensi Kombinasi Anastetikum Xylazin- Medetomidin Pada Kucing Lokal (Felis domestica).
Abstrak: Xylazine and medetomidine preparations most used as anesthetic. Both single dose xylazine and medetomidine has advantages and disadvantages in application, so some research was done to find out the effect combination xylazinemedetomidine. Twenty four adult cats with body weight between 3.5-5 kg in age of 2-3 years old are divided into four groups treatment and six repeatation. The groups are the ones not receive anesthesia treatment (controls), a group of xylazine at a dose 0.1 mg/kg weight (group I), a group of medetomidine at a dose 0.05 mg/kg weight (group II), and a group of xylazine 0.1 mg/kg weight combination with medetomidine 0.05 mg/kg weight (group III). The results shows cats injected with xylazine-medetomidine has a rapid onset compared to single dose of xylazine and medetomidine. The duration of preparations in a cats injected with combination of xylazine-medetomidine is longer than xylazine and medetomidine preparations. The respiration frequency of heart shows same decrease pattern and not significant. The group xylazine-medetomidine can keep cats body temperature stable during the process of anesthesia, Conclusion in this study is the combination of xylazine and medetomidine effectively used as an alternative anesthesia in local cats.
Keyword: anesthesia, combinations, local cats, medetomidine, xylazine

Judul: Kekonsistenan Hamiltonian pada Gerak Gelombang Interfacial
Abstrak: The interfacial wave is an internal wave that occurs at boundary of two layers fluid. It appears because there is difference of mass density between the two layers. The objective of this thesis is to formulate the motion of internal wave with flat base and flat as well as free upper bound surface. The motion equation obtained is a Hamiltonian system. The Hamiltonian in this system is expressed by variable of wave deviation and horizontal component of potential velocity. Under assumption that interfacial wave moves only in one direction, it can be shown that the Hamiltonian depends on the solution of the wave motion equation. The coefficients of the equation depend on the physical characteristics of the two layers of fluid, i.e. thickness and mass density. The numerical results show that Hamiltonian in the system is constant. It is consistent with Hamiltonian characteristic, which does not depend on time.
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