Judul: Efikasi Infus Akar dan Daun Tanaman Putri Malu (Mimosa pudica L. ) Sebagai Antelrnintika Terhadap Hymenolepis nana Pada Mencit Putih
Abstrak: Tanaman putri malu telah banyak digunakan sebagai tanaman obat termasuk sebagai antelmintika (De Padua et al., 1999) walaupun belum dibuktikan kebenarannya secara ilmiah. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian berbagai tingkat konsentrasi infus akar dan daun tanaman putri malu terhadap cacing H. nana pada mencit putih.
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Judul: Effectiveness of jintan putih (Cuminum  cyminum) infusion as antidiarrheal in mice (Mus musculus)
Abstrak: Jintan putih merupakan tanaman yang sudah sejak lama dikonsumsi sebagai bahan masakan dan obat, namun belum terdapat penelitian terkait manfaat jintan putih sebagai antidiare. Penelitian ini bertujuan mengetahui efektivitas infusa jintan putih sebagai antidiare dan menentukan konsentrasi yang memiliki efek antidiare paling efektif. Penelitian ini juga bertujuan mengetahui kandungan metabolit sekunder pada jintan putih melalui penapisan fitokimia. Pengujian antidiare dilakukan dengan menggunakan metode proteksi intestinal dengan pemberian sediaan secara peroral. Parameter yang diamati pada metode proteksi intestinal yaitu frekuensi defekasi, konsistensi feses, dan durasi diare. Penelitian ini menggunakan 30 ekor mencit yang dibagi menjadi 5 kelompok terdiri dari kontrol negatif (Tween-80 [1%]), kontrol positif (Loperamide HCl), dan kelompok perlakuan infusa jintan putih konsentrasi 25, 50, dan 100%. Konsentrasi 25% merupakan konsentrasi yang paling efektif, karena menghasilkan durasi diare paling pendek. Penapisan fitokimia infusa jintan putih menunjukkan terdapat senyawa metabolit sekunder meliputi alkaloid, saponin, flavonoid, tanin, dengan tanin sebagai senyawa yang paling berpotensi sebagai antidiare., White cumin is a plant that has long been consumed as a food and medicine ingredient however, there has been no research related to the benefits of white cumin as antidiarrheal. This study aims to determine the effectiveness of white cumin extract as antidiarrheal and determine the concentration that has the most effective antidiarrheal effect. This study also aims to determine the content of secondary metabolites in white cumin through phytochemical screening. Antidiarrheal testing was carried out using the intestinal protection method by administering the preparation orally. Parameters observed in the intestinal protection method are frequency of defecation, consistency of feces, and duration of diarrhea. This study used 30 mice divided into 5 groups consisting of a negative control (Tween-80 [1%]), positive control (Loperamide HCl), and treatment groups of white cumin infusion with concentrations of 25, 50, and 100%. The 25% concentration is the most effective concentration, because it produces the shortest duration of diarrhea. Phytochemical screening of white cumin infusion showed that there were secondary metabolite compounds including alkaloid, saponin, flavonoid, tannin, with tannin as the most potential antidiarrheal compound.
Keyword: antidiare, infusa, proteksi intestinal, infusion, intestinal protection, jintan putih, penapisan fitokimia, antidiarrhea, phytochemical test

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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