Judul: Pengaruh Pemberian Ekstrak Rumput Kebar(Biophytum petersianum Klotzsch) Terhadap Fertilitas Tikus Jantan (Rattus novergicus)
Abstrak: Rumput kebar (Biophytum petersianum Klotzsch,) merupakan salah satu tumbuhan obat yang terdapat di Indonesia. Tumbuhan ini lebih banyak digunakan oleh penduduk sebagai obat kesuburan untuk memelihara kemampuan reproduksi dan fertilitas. Penurunan fertilitas dapat disebabkan oleh banyak faktor. Faktor yang dapat mempengaruhi fertilitas antara lain bahan-bahan berbahaya. Secara langsung bahan berbahaya ini dapat mengganggu fungsi organ reproduksi, oleh karena itu tumbuhan obat tradisional seperti rumput kebar dapat digunakan dalam memperbaiki fungsi reproduksi. Borax (Na2B4O7.10H2O) merupakan salah satu zat kimia yang banyak digunakan dalam makanan sebagai pengawet. Dalam mencari hewan model jantan dengan kemampuan reproduksi yang rendah dilakukan suatu penelitian pendahuluan dengan mengunakan borax. Hasil penelitian membuktikan bahwa pemberian borax pada tikus putih jantan (Rattus norvegicus L) dapat menurunkan konsentrasi spermatozoa. Penelitian ini bertujuan untuk membuktikan bahwa pemberian ekstrak rumput kebar dapat mempengaruhi kualitas sprematozoa tikus jantan yang kurang baik akibat bahan berbahaya seperti borax.
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Judul: Manfaat Ekstrak Rumput Kebar (Biophytum petersianum Klotzsch) terhadap Penampilan Reproduksi Mencit Putih Betina
Abstrak: Biophytum petersianum Klotzsch is a cushion plant which grows and distribute from Africa, Madagascar and South-East Asia include few islands in Indonesia, except to Malay Peninsula, Sumatera and Kalimantan. In Indonesian Province of Irian Jaya Barat, this plant is restricted to the area of Kebar valley (Kebar district, Manokwari regency) with altitude 500 – 600 m asl., and also known as the Kebar’s grass. This plant has been used by local people for many years as traditional drug through simple process for various health need. The objective of this research is to identify the chemicals content of the Kebar’s grass (Biophytum petersianum Klotzsch), and its effect on appearance of the reproduction performance in female Mus musculus albinus. The chemicals content (amino acids, proteins, lipids, vitamins and minerals) of the Kebar’s grass extract were analyzed using proximate analysis methods. The periode of oestrus cycle was done by vagina’s smear method for 4 cycles (2 cycles before the treatment and 2 cycles during the treatment). Litter size was obtained by calculating of each female, and the body weight litter obtained by weighing. Eighty adult females (body weight mean 35 gram) were devided into four groups, consist of females and well be analyzed for (a) quality and quantity of embryos, (b) litter size and weight. Ten days before and during treatment (4 cyclus) all females were examined their oestrus cycle using vagina smear methods. After treatment all females were mated with male mice (ratio 1 : 2). Sign of mating was examined by the presenced of vaginal plug. Four days after mating ten females of each group were sacrisfie followed by early embryo collection; while ten other were breeded until partus to examine the litter size and weight. The experiment was designed by using completely random design with four treatments and ten replications. The data were analyzed by using analysis of variance and LSD was applied to compares statistical differences between each treatments. The results showed that the chemicals content of the Kebar’s grass extract are protein 7.35%, lipid 0.72%, minerals; Ca, P, 1.52% and 0.60%, respectively and 17 amino acids contains. The application of this extract with 0.090 and 0.135 mg/g body weight extend the oestrus length and increase number embryo, increasing daily gain, mean of litter size and weight; 63.60 ± 9.88 and 63.60 ± 5.80 hours, 8.71 ± 1.11 and 10.86 ± 1.68 cells, 0.35 ± 0.04 dan 0.31 ± 0.02 gram, 11.70 ± 0.67 and 12.90 ± 0.99 weigth and 1.77 ± 0.11 dan 1.69 ± 0.10, respectively. In conclusion, Kebar’s grass extract extend the oestrus length, increase quality and quantity of embryos, daily gain, litter size and litter weight. The oral application of the Kebar’s grass extract 0.135 mg/g body weight, is the best to can improve the reproduction performance of female Mus musculus albinus.
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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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