Judul: Efektivitas Penyuntlkan Pregnant Mare's Serum Gonadotropindalam Superovulasi Pada Bobot Badan Dan Ukuran Tubuh Anak Tikus Putih Saat Lahir
Abstrak: The goal of this experiment was to study the effect of superovulation on body weight and size of pups at birth. Superovulation technique was done with the injection of PMSG before mating on female rats, to increase endogenous secretion of reproductive hormones. Twenty mature rats Sprague-Dawley strained were assigned into four treatments, each treatment with five rats. The treatment was PMSG injection, with: 0; 37,5; 75 and 150 IUlkg BW dosage respectively. PMSG injection was given intra peritoneauy at diestms cyde, then 48 hours later fouowed by HCG injection to stimulate ovulation. The experimental rats were mated and only pregnant rats were maintained until parturition. The body weight and size (head, spine, fore leg and hind leg) of 226 born pups were measured The result showed that superovulation did not significantly influence birth weight, length of head, spine and fore leg. Only 37,5 IUlkg BW dosage that increased the length of the hind leg. Superovulation did not influence the parameters within as weu as among litter size.
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Judul: Efektifitas penyuntikan dalam Superovulasi pada bobot badan dan ukuran tubuh anak tikus putih saat lahir
Abstrak: Penelitian ini dilakukan untuk mengetahui efek penyuntikan PMSG dengan berbagai dosis pada rasio jenis kelamin anak tikus jantan dan betina telah dilakukan di Bagian Fisiologi dan Farmakologi, Fakultas Kedokteran Hewan, Institut Pertanian Bogor. Tikus putih dari galur Spraque-Dawley yang digunakan adalah 20 ekor betina dan berumur 10 minggu atau yang telah dewasa kelamin. Rancangan percobaan mengikuti pola rancangan acak lengkap pola satu arah dengan perlakuan dosis PMSG 0; 37,5; 75; 150 IU/kg BB yang disuntikkan pada permulaan diestrus. Setelah 48 jam dilakukan penyuntikan HCG. Tikus dikawinkan dengan sistem monogamous pair mating' dan setelah 21 hari lama kebuntingan, anak tikus yang baru lahir dihitung jumlah jantan dan betina dengan melakukan sexing. Hasil analisis data menunjukkan bahwa tidak ada hubungan yang signifikan antara penyuntikan PMSG dengan berbagai dosis untuk superovulasi dengan rasio anak jantan dan betina yang dilahirkan (P>0,05). Dengan demikian tidak ada satu jenis kelaminpun yang ditekan atau dimunculkan pada berbagai dosis yang diberikan. Selain itu penyuntikan PMSG untuk superovulasi tidak memperburuk lingkungan uterus induk sehingga baik untuk anak jantan dan betina yang lahir.
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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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