Judul: Keragaman Jenis Lalat Pengganggu dan Potensi Permasalahannya Pada Ternak Sapi Potong di Daerah Cirebon
Abstrak: The aim of this research was to find out the diversity of filth flies on beef cattle in Cirebon, the domination of flies, the correlation of flies density and temperature and humidity, and the risk of disease that can be transmitted by the flies. The filth flies were taken by sweeping net in 18 small husbandries and 1 large husbandry in Cirebon. The data showed that the small husbandries was dominated by S. calcitran (57.19%), while the large husbandry was dominated by H. exigua (97.64%). Correlation of flies density and climate factor (temperature and humidity) were analysed by Minitab 16 only in large husbandry. The coefisient correlation (r) of flies density and temperature r=0.352 on M. domestica and r=0.158 on H. exigua. On the other hand, coefisient correlation of flies density and humidity was r=0.233 on M. domestica and r=0.018 on H. exigua. These result showed that there were no influence of climate factor to flies density fluctuation. The high population of S. calcitrans in small husbandries were potensial to raise Trypanosomiasis and Besnoitiosis cases, whereas population of H. exigua in large husbandry was to raise disease, especially miasis.
Keyword: filth flies, flies diversity, beef cattle

Judul: Keragaman Jenis Lalat Pengganggu dan Potensi Permasalahannya pada Ternak Sapi Potong di Bondowoso
Abstrak: The aim of this research was to study the diversity of species and the dominance of filth flies on beef cattle farms in Bondowoso. In addition, this research was to study the risk due to the presence of filth flies on beef cattle farms. The samples were carried out on 14 traditional farms and 1 communal farm. The samples were taken by sweeping net, then it had identified and analyzed to determine the density of flies. Fly density was expressed with relative abundance and species dominance. The diversity of flies in Bondowoso were Haematobia exigua, Stomoxys calcitrans, Musca domestica, Hippobosca variegata, and Tabanus megalops. The most dominant species was Haematobia exigua. The dominance value of Haematobia exigua on traditional farms was 87.88% and 89.27% on communal farm. A lot of fresh cow dungs in those farms influence the number Haematobia exigua because fresh cow dung was a suitable breeding place for these flies. These flies may carry Stephanofilaria, Trypanosoma evansi, and Bacillus anthracis.
Keyword: cattle farm, diseases risk, diversity, filth flies

Judul: Persamaan Geodesik Black Hole dengan Metrik Kerr 4+1 Dimensi dalam Koordinat Waktu Kosmik
Abstrak: Persamaan geodesik black hole dengan metrik Kerr 4+1 dimensi dalam koordinat waktu kosmik merupakan interpretasi lain dari persamaan geodesik black hole dengan metrik Kerr 4+1 dimensi, dimana acuan waktu yang digunakan diubah dari koordinat waktu wajar (proper time) ke dalam koordinat waktu kosmik (cosmic time). Waktu kosmik merupakan koordinat waktu yang dimana pengamat bergerak mengikuti ekspansi dari alam semesta. Penelitian ini merekonstruksi persamaan geodesik black hole dengan metrik Kerr 4+1 dimensi yang telah ditemukan pada penelitian sebelumnya menjadi persamaan geodesik yang memiliki fungsi terhadap dimensi waktu (t). Hasil akhir dari transformasi persamaan dapat digunakan sebagai bahan studi pustaka untuk penelitian lebih lanjut mengenai persamaan geodesik black hole dalam koordinat waktu kosmik.
Keyword: Dimensi ekstra, Metrik Kerr, Persamaan geodesik, Waktu kosmik