Judul: The Change in Composition of Butterfly Diversity on IPB Dramaga Campus in Bogor
Abstrak: Kampus Institut Pertanian Bogor Dramaga memiliki keanekaragaman hayati yang tinggi, salah satunya adalah keanekaragaman kupu-kupu. Keanekaragaman kupu-kupu dapat mengalami perubahan seiring berjalannya waktu yang disebabkan oleh perubahan iklim dan lingkungan. Penelitian ini bertujuan untuk mengetahui keanekaragaman, kemerataan, dan kesamaan jenis kupu-kupu di Kampus IPB Dramaga, serta mengetahui perubahan keanekaragaman jenis kupu-kupu di kawasan Kampus IPB Dramaga setelah mengalami perubahan tersebut. Pengambilan data dilakukan dengan metode Pollard transect dan mendapatkan 116 individu kupu-kupu yang terdiri dari 28 jenis. Kupu-kupu yang ditemukan terdiri dari 4 famili, yaitu Pieridae, Nymphalidae, Papilionidae, dan Lycaenidae. Keanekaragaman jenis kupu-kupu tertinggi berada pada lokasi Danau SDGs dengan nilai 2,12. Nilai kemerataan jenis kupu-kupu tertinggi yaitu pada lokasi Taman Konservasi dengan nilai 0,97. Tingkat kesamaan jenis tertinggi terjadi antara lokasi Danau SDGs dan Jalan Ulin dengan nilai 0,38. Secara umum, keanekaragaman kupu-kupu di Kampus IPB Dramaga mengalami penurunan dalam kurun waktu 10 tahun., IPB University has high biodiversity, one of which is butterfly diversity. Butterfly diversity can change over time due to climate and environmental changes. This study aims to determine the diversity, evenness, and similarity of butterfly species in the Dramaga Campus of IPB, and to determine changes in the diversity of butterfly species in the area of the Dramaga Campus of IPB after experiencing these changes. Data was collected using the Pollard transect method and obtained 116 butterfly individuals consisting of 28 species. The butterflies found consisted of 4 families, namely Pieridae, Nymphalidae, Papilionidae, and Lycaenidae. The highest diversity of butterfly species is in the Lake SDGs location with a value of 2,12. The highest evenness value of butterfly species is at the Conservation Park location with a value of 0,97. The highest level of similarity occurs between Lake SDGs and Jalan Ulin with a value of 0,38. In general, the diversity of butterflies on the Dramaga Campus of IPB has decreased over the past 10 years.
Keyword: butterflies, IPB Dramaga, species diversity, species evenness, species similarity

Judul: Dinamika Keanekaragaman Jenis dan Karakteristik Habitat Kupu-kupu di Kawasan Kampus IPB Darmaga
Abstrak: The diversity of wildlife including butterfly is one of the factors that becomes a consideration on the declaration of Bogor Agricultural Institute (IPB) as Campus Biodiversity. The development of land use at IPB Darmaga requires a research on the relationship between habitat characteristics with the diversity of butterfly as a comparison with the previous study to provide habitat management data for the management of IPB Darmaga campus. The study was conducted at eight habitat types in IPB Darmaga, which are: 1) Arboretum of Landscape, 2) Al Hurriyah Forest, 3) Sengon Forest, 4) Akasia Forest, 5) DAR Area, Faculty of Forestry, 6) Residential of Lecturers (Perumahan dosen), 7) Cikabayan and 8) Gymnasium Area. The result of this research gets 707 butterfly consisting 55 species of butterfly. Butterflies which were found consists of five families, namely Papilionidae (8 species), Nymphalidae (29 species), Pieridae (8 species), Lycaenidae (4 species) and Hesperidae (6 species). Residential of Lecturers (Perumahan dosen) habitat has the highest species diversity value of 2.93 with an average temperature characteristics of 30.330C, relative humidity average of 75.89%, the value of Leaf Area Index (LAI) of 1.507 and has a diversity of larvae feed plants, butterflies feed plants and shelters. Generally, species diversity index values and the number of butterfly species has decreased compared to previous studies due to changes in land use on IPB Darmaga campus that disturbs the habitat of butterfly.
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Judul: Sintesis dan Pencirian Natrium Titanat (Na2Ti2O4(OH)2) Berbahan Dasar Titanium Dioksida
Abstrak: TiO2 can be utilized as basic material for synthesis of sodium titanate (Na2Ti2O4(OH)2). This research was purposed to synthesize and characterize sodium titanate from TiO2 rutile powder as a basic material. Sodium titanate was synthesized by hydrothermal process at temperature 130 °C by mixing TiO2 rutile powder with 5 M and 10 M NaOH solution, then each was calcinated at temperature 700 °C. The energy dispersive X-ray analysis showed that sodium titanate has been successfully synthesized. This result was also supported by functional group analysis with Fourier transform infrared (FTIR) spectrofotometer showing the existence of Ti-O-Na vibration band at 989.42 cm-1. The formation of sodium titanate was depend on the reaction condition such as temperature, reaction time, and NaOH concentration. Scanning electron microscope image indicated that sodium titanate synthesized at 130 °C in 20 hours reaction time with 10 M NaOH had crystal size of 99.37 nm.
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