Judul: Konduktivitas Hidrolika tidak Jenuh Tanah Latosol Darmaga
Abstrak: Banyak dari proses masuknya air tanah ke suatu areal pertanian dan dikedalaman perakaran dari banyak tanaman kecuali pada areal persawahan, terjadi ketika tanah dalam keadaan tidak jenuh. Sehingga laju pergerakan air tanah yang ditentukan oleh kemampuan tanah melalukan air pada keadaan tidak jenuh menjadi sangat penting. Prinsip utama dari pergerakan air tanah adalah bahwa aliran tanah disebabkan oleh daya air yang bergerak, akibat dari perbedaan potensial.
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Judul: Konduktivitas hidrolika tanah sawah kondisi tidak jenuh, jenis tanah latosol Darmaga, Bogor
Abstrak: Pada tanah sawah, kondisi tidak jenuh terutama terjadi pada fase pematangan padi dan bila sawah dipakai untuk tanaman palawija. Keadaan ini menyebabkan ketersediaan air tanah yang diperlukan tumbuhan sangat bergantung pada pergerakan air dalam tanah yang dalam hal ini bergantung pada sifat konduktivitas hidrolika tidak jenuhnya. Penelitian ini menghubungkan sifat konduktivitas hidrolika tidak jenuh terhadap kadar air, walaupun menurut Hillel (1980) hubungan antara konduktivitas hidrolika dengan air hanya hipotesis karena sebenarnya tidak ada fisik yang mendasarinya. Hasil dari penelitian yang menggunakan dua metoda, yaitu "instantaneous profile" dan serapan horisontal antara konduktivitas hidrolika dengan kadar air memakai persamaan k = a ob dimana a dan b adalah konstanta empirik yang dicari dengan metoda kuadrat terkecil. Persamaan antara kondukti- vitas hidrolika dengan kadar air untuk metoda "instantaneous profile" berturut-turut lapisan I (kedalaman 0-20 cm dari permukaan tanah), II (kedalaman 21-40 cm dari permukaan tanah) dan III (kedalaman 41-60 cm dari permukaan tanah) adalah k = 8.377E-6 1.457E-6 * 06.499, k 5.152E-668.004 dan k * 08.505. Sedangkan untuk metoda serapan horisontal, berturut-turut lapisan I, II dan III adalah k = =..dst
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Judul: The isolation and molecular identification of papillomavirus in macaca fascicularis and macaca nemestrina at animal facility of primate research centre – Bogor Agricultural University.
Abstrak: Cervical cancer is still regarded as a major cause of death in women world wide, hence research on papilloma viruses, their drugs and vaccines for the prevention are still continued. Papilloma virus is a DNA virus of the family papillomaviridae. Papilloma virions have no sheath, the diameter of 55 nm, and icosahedral capsid. The virus multiplies in the cell nucleus and causes chronic latent infection. The virus genome has a circular form, 8 kbp in length with 8 open reading frames. The genome is divided into early (E) and late (L) genes. The E gen synthesizes 6 E proteins, namely E1, E2, E4, E5, E6 and E7, which are linked into the process of viral replication and oncogenes. Meanwhile, the L gene synthesizes 2 proteins, the L1 and L2, which are related to the formation of the capsid (Hakim 2010). In order to obtain the best result of the cancer research, it is highly requested to obtain appropriate animal model that reflect aspects of human disease. Non-human primates have high similarity with humans, both in terms of the evolution of the genetic, anatomical, physiological, biochemical and organ systems, as well as in cancer genes. Non-human primates of the genus Macaca is a genus with the highest distribution worldwide, from Japan to Afghanistan. So far, there are 22 species are included in the genus Macaca. Originally rhesus monkeys or M. mulatta are widely used for biomedical research, but since the Indian government imposed a ban on importing these animals, then Macaca fascicularis (Long-tailed Macaque, cynomolgus) and Macaca nemestrina (Pig-tailed Macaque), which has high population in Southeast Asia, began to be used as research animal. Various medical aspects related to both species are commonly studied by many researchers as an animal model for human diseases. This study is using the polymerase chain reaction (PCR) method and nucleotide tracking to identify papillomavirus tipes that infect the genital tract of Macaca fascicularis and Macaca nemestrina, which is kept in breeding facilities of Primate Research Center, IPB. The analysis of nucleotide sequences were performed using the Clustal W 2.1 and 5.1 Mega program. The establishment of phylogenetic tree using neighbor joining with 1000 times bootstrap repetition. The results showed that the papillomavirus that infect Macaca fascicularis was 32.7% (78/238) and Macaca nemestrina 12% (4/31). Both species were infected by Macaca fascicularis papillomavirus (MfPV) tipe 3, 4, 5, 7 and 9, belongs to the genus Alpha papillomavirus with homology of 80 - 100%. Papilloma virus that infected the pig-tailed macaque was the same tipe of papillomavirus that infected the cynomolgus with similarity between 82% - 99% based on L1 region. To further explain the tipes of papilloma viruses that infected the pig-tailed macaque, it is necessary to identify the entire genome of the virus. To determine the tipe of the virus, it requires the identification of a more complete nucleotide sequence. It is interesting because papillomavirus that infected the pigtail macaques has 76% homology with the HPV tipe 52. This is the first report on the incidence of papillomavirus infection in the pigtail macaque genome that further analysis
Keyword: Papillomavirus, cervic cancer, animal model, Macaca fascicularis, Macaca nemestrina