Judul: Vaksinasi Oral pada Induk Ikan Nila (Oreochromis niloticus) dan Ketahanan Larva  yang Dihasilkan Terhadap Infeksi Streptococcus Agalactiae
Abstrak: Pencegahan terhadap penyakit streptococcosis yang disebabkan oleh bakteri Streptococcus agalactiae pada ikan nila salah satunya adalah dengan vaksinasi.Transfer kekebalan maternal pada induk ikan merupakan upaya mengantisipasi angka kematian larva ikan pada umur kurang dari satu bulan. Penelitian ini bertujuan menguji efektivitas pemberian vaksin dengan metode oral yang diberikan pada induk ikan nila, untuk meningkatkan imunitas induk ikan nila dan ketahanan larva yang dihasilkan terhadap infeksi S. agalactiae. dst ..., One of the prevention activity against streptococcosis caused by the Streptococcus agalactiae in tilapia with vaccination. Transfer of maternal immunity from to broodstock is an effort to anticipate the mortality rate of fish larvae on the age of less than one month. The study aimed to test the effectiveness of administration of vaccines by the method of oral method to be given to tilapia broodstock, to increase the immunity of tilapia broodstock and the resistence of the resulting larvae to S. agalactiae infection. dst...
Keyword: Larvae, Oral, S. Agalactiae, Vaccination

Judul: Vaksinasi Induk Ikan Nila Oreochromis niloticus dengan Sel Utuh dan Ketahanan Benih yang Dihasilkannya Terhadap Infeksi Streptococcus agalactiae
Abstrak: The aimed of this study was to evaluate the effectiveness of vaccination on red tilapia broodstock which causes antibodies can be transferred to the offspring. The average weight of broodstocks used in this study were 250 ± 0.03 g were kept in a fiber tube sized 2 m x 1 m x 0.5 m. The study using complete randomized design that consisted of 2 treatments and 3 replications. Female broodstocks were vaccinated using intraperitoneal injections at a dose of 0.4 ml/kg and control fish were injected with Phosphate Buffer Saline (PBS). Observed parameters in this study consisted of mortality, relative survival rate, antibody titers, the ontogeny of kidney tissue. Antibody titers measured using microtiter agglutination method on the broodstock, eggs, body fluids of larva at 5 days, 10 days, and 15 days old. Larval challenge were given at age of 5, 10, and 15 days. The results showed that vaccination of red tilapia broodstock has given significantly different antibody level (P<0.05) in the offspring compared to control treatment with average relative survival rate up to 84, 92 %.
Keyword: injection, antibody transfer, vaccination, Streptococcus agalactiae, Tilapia

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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