Judul: Pengaruh Jarak dari Hutan dan Kondisi Lanskap Pertanian terhadap Keanekaragaman Hymenoptera
Abstrak: Landscape conditions have an enormous role in determining the level of biodiversity. Complexity of habitats has been known to be associated with the increase of spesies richness. The purpose of this research is to study the effect of distance from the forest and agricultural landscapes toward abundance and diversity of hymenoptera in vegetable crops. A survey was conducted in the month of August 2012 until October 2012 at eight different habitats in Cisarua, Megamendung, Tamansari, Caringin and Cigombong from Bogor District. The habitat observed is divided into four criteria: habitats that are located within 0 to 500 m, 500 to 1000 m, 1000 to 1500 m, and 1500 to 2600 m from the forest. Sampling was done by installing 4 to 15 Yellow Pan Trap (YPT) in each locations. Altogether there were 779 individuals belonging to 26 families and 130 species that were collected. Species richness was found in the habitats that are located 1500 to 2600 m from the forest.Based on Shannon's index, the highest diversity was found to be on landscape with the distance of 1000 to 1500 m from the forest (B01) in sub-district Tamansari. Spesies similarity was found to be quite with less than 50% between different habitats. However, species composition between different habitats does not show is any difference. Result of the study does not show that diversity of Hymenoptera is effected by distance from forest instead it is more influenced by conditions and type of agricultural landscapes.
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Judul: Keanekaragaman Serangga Penyerbuk pada Pertanaman  Mentimun Pengaruh Keberadaan Habitat Alami
Abstrak: Pollination is a critical first step in sexual reproduction of flowering plants. Insect pollinator plays an important role in pollination prosess of flowering plants, including cucumber. The aims of this study are to determine the influence of natural habitats toward the diversity insect pollinators and to gain informations of the relationship between insect pollinator diversity and the number of flowers. The research was set up in six locations with different distances from the natural habitat. Three locations are categorized as being in a close proximity to natural habitat (D), which is about ≤200 m and three other locations are categorized as far from natural habitats (J), with a distance of ≥1000 m.The distance between the locations are 1.5 km. Observations were conducted by two methods, sweeping net and malaise traps. Number of flowers were counted using the amount of flower activities which open and close at four points for each by 1 m x 1 m plot. Results showed that agricultural land conditions affect the abundance of insect pollinators. The highest diversity of insects were found in the morning, e.g.- at 09:00 am and 11:00 am. No correlation were found between the numbers of species of insect pollinators and the numbers of flower.
Keyword: pollination., natural habitat, insect pollinator, diversity

Judul: Kapsul Ibuprofen Tersalut Pektin-Natrium Alginat- ZnO sebagai Sistem Pengantar Obat dengan Metode Gelasi Ionik.
Abstrak: Ibuprofen merupakan obat antiinflamasi dan analgesik yang memiliki waktu paruh yang singkat di dalam plasma, menyebabkan konsumsinya meningkat hingga 3-4 kali dalam sehari sehingga dibutuhkan penyalut yang dapat mengendalikan rilisnya ibuprofen. Enkapsulasi ibuprofen berbahan dasar komposit polimer pektin-natrium alginat-ZnO dibuat dengan metode gelasi ionik. Sebelumnya senyawa ZnO berhasil disintesis dengan metode hidrotermal. Ukuran kristal ZnO yang didapat berkisar 273–556 nm dengan bentuk heksagonal. Kapsul dibuat dengan jumlah tambahan ZnO yang berbeda, pada kapsul komposit 1 mengandung jumlah ZnO lebih banyak dari kapsul komposit 2. Ukuran kapsul yang didapat berkisar 1.9-2.2 mm. Semakin banyak ZnO yang ditambahkan ke dalam matriks penyalut menyebabkan pelepasan ibuprofen terjadi secara perlahan. Efisiensi penyalutan yang didapatkan ialah 32.57% untuk kapsul komposit 1 dan 31.46% untuk kapsul komposit 2. Kinetika pelepasan ibuprofen dengan penyalut pektin-natrium alginat-ZnO mengikuti model Korsmeyer Peppas.
Keyword: gelasi ionik, natrium alginat, pektin, ZnO