Judul: Daerah penyebaran dan variasi morfologi ular putih (Micropechis ikaheka) di Papua
Abstrak: The objectives of the research were to identify the area of distribution and the specific habitat of the white snake (Micropechis ikaheka) in Papua (Western New Guinea), and also to explain the morphological variation among the populations of that snake. About eight months of field work were taken to conduct the survey (April 2002; June 2006; and March to Augusts 2007) in several areas in the mainland and off-shore islands of Papua. Observation were carried out in the field at night and during the day to collect the snake. Also, studies were done on a collection of specimens that were found in the Museum Zoologicum Bogoriense LIPI in Cibinong, Conservation International in Jayapura and the Biology Laboratory of the Papua State University in Manokwari. The results showed that the white snake Micropechis ikaheka can be divided into three separate groups based on the color of the scales, i.e. Black, Brown and Yellow. The black one is the new group found in this research, and also there was one individual snake with transitional coloration between the brown group and the yellow group. However, M. ikaheka is common and has a relatively wide distribution in New Guinea, but every group has a specific and limited area of distribution. The group with black color is distributed in the islands of Waigeo and Batanta and the group with yellow color is distributed starting from Manokwari, Sorong, upto the islands of Salawati, Batanta and Waigeo. Meanwhile, the brown colored sanke is distributed from the island of Yapen, mainland of waropen, Mamberamo, Jayawijaya, Mindiptana upto Papua New Guinea.
Keyword: The white snake, Micropechis ikaheka, Are of distribution, Morphological variation, Famili Elopidae

Judul: Tungau Ektoparasit pada Ular Micropechis ikaheka, Leiophyton albertisi, dan Stegonotus sp. di Papua
Abstrak: Symbiosis is an interaction between two species or more. In snake, ectoparasite mites were found in the external parts of the body such as beyond the ventral scales of the snake. Previous exploration showed that the snakes M. ikaheka, L. albertisi and Stegonotus sp. in Papua was found as the host of ectoparasites mites. However, there is lack of species information of the mites. Thus, this research were aimed to study the ectoparasite mites of snakes M. ikaheka, L. albertisi and Stegonotus sp. in Papua. Wholemount polyvinillactophenol slide dan Scanning Electron Microscope (SEM) were prepared for mites identification. Results showed that the ectoparasites mites on M. ikaheka, L. albertisi and Stegonotus sp. were clasified in Subclass Acari, Order Parasitiformes, Family Paramegistidae, Genus Ophiomegistus, and Species Ophiomegistus luzonensis. Characteristics of mites O. luzonensis has nine pairs of setae on the jugular shield, two setae on metapodal shield. The metapodal shields were unfused and those shields were separated with the peritreme shield, endopodal shield verge with latigynial shield, latigynial and sternogynial shield was separated. Latigynial shield possessed more than twenty pairs of setae, however, on mesogynial–ventrianal shield had more than one hundred simple foliate setae. The mesogynial and ventrianal shield were fused and occurred three rows of foliate setae.
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4