Judul: Kajian Toksikopatologi Pemberian Ekstrak Etanol Daun kelor (Moringa oleifera Lamk) pada Mencit (Mus musculus).
Abstrak: Penelitian ini dilakukan untuk melengkapi data penelitian mengenai manfaat daun kelor dibidang kedokteran yakni mengetahui efek patologi dari pemberian ekstrak etanol daun kelor (Moringa oleifera Lamk) pada mencit (Mus musculus) yang digunakan untuk penentuan LD,. Pemberian ekstrak dilakukan secara intra peritoneal dan pengamatan LD50 dilakukan selama 24 jam.
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Judul: The Acute Toxicity Test of Moringa Seeds (Moringan oleifera L.) Infusion in  Mice (Mus musculus)
Abstrak: Potensi biji kelor sebagai bahan obat herbal telah banyak diketahui, namun informasi spesifik mengenai tingkat toksisitas dan keamanan dari biji kelor masih sangat terbatas. Penelitian ini bertujuan untuk menganalisis tingkat keamanan infusa biji kelor pada mencit menggunakan metode penentuan nilai lethal dose 50 (LD50), serta memberikan informasi tentang tingkat keamanan infusa biji kelor untuk perkembangannya sebagai bahan obat herbal. Sebanyak 20 ekor mencit betina dibagi menjadi empat kelompok dan lima ulangan. Mencit percobaan yang tidak diberi infusa biji kelor dikelompokkan sebagai kontrol, sedangkan yang diberi infusa biji kelor dosis 5, 10, dan 15 g/kg BB sebagai perlakuan. Pemberian infusa biji kelor dilakukan satu kali pada awal penelitian secara oral kemudian mencit diamati gejala klinis, mortalitas, dan bobot badannya. Pada akhir penelitian, mencit percobaan dikorbankan untuk dievaluasi parameter patologi anatomi. Hasil penelitian menunjukkan bahwa pemberian infusa biji kelor mendukung pertumbuhan bobot badan mencit secara normal, tanpa menyebabkan kemunculan gejala klinis patologis atau bahkan kematian. Simpulan penelitian ini ialah infusa biji kelor termasuk bahan yang praktis tidak toksik serta aman dan berpotensi untuk dijadikan obat herbal bagi masyarakat, The potential of moringa seeds as herbal medicinal ingredients has been widely known, but specific information regarding the level of toxicity and safety of moringa seeds is still very limited. This study aims to analyze the safety level of moringa seed infusion in mice using the lethal dose 50 (LD50) assessment method, as well as to provide information about the safety level of Moringa seed infusion for its development as a herbal medicine. A total of 20 female mice were divided into four groups with each contain 5 mice. Experimental mice that were not given moringa seed infusion as a control, while those given moringa seed infusion at doses of 5, 10, and 15 g/kg BW were the treatment. Moringa seed infusion was administered once at the beginning of the study orally and then clinical symptoms, mortality, and body weight were observed. At the end of the study, experimental mice were sacrificed for pathological views. The results showed that giving moringa seed infusion to mice did not cause death or specific clinical symptoms and normal growth. It was concluded that the infusion of moringa seeds including practically non-toxic ingredients.
Keyword: acute toxicity test, infusion, LD50 value, mice, moringa seeds

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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