Judul: Populasi dan Habitat Elang Ular Bido dan Elang Hitam di Taman Nasional Gunung Ciremai Jawa barat
Abstrak: Berkurangnya populasi Elang Ular Bido dan Elang Hitam disebabkan oleh beberapa faktor yaitu menyusutnya habitat alami akibat perambahan hutan, pencemaran lingkungan dan perburuan liar. Penelitian ini bertujuan mengetahui populasi dan mengetahui karakteristik habitat Elang Hitam dan Elang Ular Bido di Taman Nasional GunungCiremai, Jawa Barat. Data yang dikumpulkan dianalisis dan dihitung untuk mengetahui populasi, jumlah dan kepadatan, stuktur umur dan sex ratio. Kelimpahan populasi Elang Hitam yaitu 3,5 ± 0,3, sedangkan nilai kelimpahan populasi Elang Ular Bido sebesar 9,5 ± 1,6. Perjumpaan Elang Hitam pada kelas umur dewasa sebesar 57,15% dan remaja 42,85%. Elang Ular Bido pada kelas umur dewasa teramati sebesar 52,63% dan remaja 47,37%. Tidak ditemukan kelas umur juvenil pada kedua jenis elang. Habitat Elang Hitam dijumpai pada jalur hutan Cipari, Resort Bintangot, Bungkit Lambosir dan Buffer Sayana, sedangkan Elang Ular Bido dijumpai pada seluruh jalur kecuali jalur cilengkrang. Penggunaan habitat oleh Elang Hitam dan Elang Ular Bido pada hutan alam didominasi oleh aktivitas terbang dan istirahat., The decrement of the population of Bido snake eagles and black eagles caused by several factors, namely, shrinking natural habitat due to forest encroachment, environmental pollution, and illegal hunting. This research aims to find out the population and the habitat characteristics of black eagles and bido snake eagles in Mount Ciremai National Park, West Java. The collected data were analyzed and calculated to discover population, number and density, age structure and sex ratio. The abundance of the black eagle population is 3,5 ± 0,3, while the abundance value of the bido snake eagle population is 9,5 ± 1,6. Black eagle encounters in the adult age class were 57,15% and juveniles 42,85%. Bido snake eagles in the adult age class were observed at 52,63% and juveniles at 47,37%. No juvenile age classes were found for either type of eagle. The black eagle's habitat is found on the Cipari forest route, Bintangot Resort, Bungkit Lambosir and Buffer Sayana, while the Bido snake eagle is found on all routes except the Cilengkrang route. Habitat use by black eagles and bido snake eagles in natural forests dominated by flying and resting activities.
Keyword: Black Eagle, Bido Snake Eagle, habitat, population

Judul: Penggunaan Habitat Koridor Halimun Salak oleh Elang ular bido (Spilornis cheela Latham, 1790) di Taman Nasional Gunung Halimun Salak
Abstrak: Crested serpent eagle is one of the raptor species in Indonesia which has protected by the Indonesian law. The population threatened due to habitat looses caused by forest degradation. The initial step could be done to preserve the species through study of the habitat use based on habitat functions, such as cover and food supply. Beside habitat functions, it was also identified the supporting functions, such as slope, altitude, and distance from source of disturbances in Halimun Salak Corridor, Mount Halimun Salak National Park. The research conducted in April-June 2013 through point count method. Based on field observation, it was identified that habitat function at forest cover can be as resting area and nesting site. The eagle hunted in forest and open area such as horticultural fields, rice fields, and shrubs near the forest. Values of the supporting functions selected by crested serpent eagle was in open area near the forest.
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Judul: Pervaporasi Alkohol Menggunakan Membran Polistirena-SDS
Abstrak: Polystyrene (PS) membrane with SDS as porogen can be utilized as a filter in alcohol pervaporation process. The membrane was prepared using inversed phase method with PS:SDS:dichloromethane solvent composition were 17:0:83; 17:0.5:82.5; 17:1:82; 17:1.5:81.5; and 17:2:81. Homogenization of mixtures were carried out for 10 and 20 hours and casted on glass plate surface then submerged it into water with temperature of 60 °C. Pervaporation capability was evaluated from flux value and separation factor. The average of water flux values in 20 hours sonication were higher than the values in 10 hours sonication. The highest separation factor was observed in PS membrane with 0.5% SDS concentration and homogenization in 20 hours is 5.23. Application of PS membrane in pervaporation as showed by purities of alcohol value using gas chromatography method revealed that the purities increase from 91.6 to 93.4%. Therefore, certain SDS addition can increase the performance of PS membrane in alcohol purification.
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