Judul: Keanekaragaman Jenis Kupu-kupu dan Tumbuhan Pakan di KHDTK Haurbentes, Bogor, Jawa Barat.
Abstrak: KHDTK Haurbentes merupakan salah satu kawasan hutan penelitian yang berada di Jawa Barat. Inventarisasi keanekaragaman hayati di suatu kawasan hutan penting dalam pengelolaan hutan dan konservasi. Data satwa yang terdapat di KHDTK Haurbentes meliputi data jenis burung, mamalia, dan herpetofauna, sementara itu belum tersedia data mengenai kupu-kupu. Penelitian ini bertujuan untuk mengkaji keanekaragaman jenis kupu-kupu di empat jalur pengamatan (Tepi 1, Tepi 2, Inti 1 dan Inti 2) dan mengkaji potensi tumbuhan pakan kupukupu. Metode yang digunakan dalam inventarisasi kupu-kupu adalah metode transek dan metode yang digunakan dalam analisis vegetasi adalah metode jalur berpetak. Dari hasil penelitian ditemukan 48 jenis kupu-kupu. Keanekaragaman kupu-kupu lebih tinggi di daerah tepi (Tepi 1 38 jenis; Tepi 2 22 jenis) dibandingkan dengan di daerah inti (Inti 1 10 jenis; Inti 2 11 jenis). Keanekaragaman jenis (H’) kupu-kupu tertinggi terdapat di jalur Tepi 1 (3.29) dan terendah pada Inti 1 (2.03). Tingkat kemerataan tertinggi terdapat pada jalur Inti 2 (0.91). Tingkat kesamaan komunitas tertinggi yaitu antara jalur Inti 1 dengan jalur Inti 2 sebesar 0.40. Tumbuhan pakan ulat dan kupu-kupu yang ditemukan di lokasi ini berjumlah 30 jenis terdiri dari 20 jenis pakan ulat dan 11 jenis pakan kupu-kupu.
Keyword: Habitat, Keanekaragaman, KHDTK Haurbentes

Judul: Keanekaragaman Jenis Kupu-kupu pada Beberapa Tipe Habitat di Pondok Ambung Taman Nasional Tanjung Puting Kalimantan Tengah
Abstrak: Tanjung Puting National Park, has megabiodiversity which still unexplorated all of them. Butterflies as part of biodiversity which still unexplorated, has important role as pollinator and with it’s wonderful colored wings has high value economically. Purposes of this study are to identified species diversity of butterflies in several habitat types and to analyze species richness, species diversity, evenness, and similarity of butterflies in every habitat types and to analyze correlation between habitat characteristics and species diversity of butterflies includes species richness, species diversity, and evenness of butterflies. This study conducted for two months from July to August 2009 in Pondok Ambung, Tanjung Puting National Park, Central Kalimantan, which located in eight different types of habitats included lowland forest, swamp forest, peat swamp forest, kerangas (dry-land habitat), grassland, burned forest, Camp Ambung, and nursery camp. The method used is by transect method in length 500 m, one transect for every habitat types, by method of sweeping and trapping used rambutans and watermelon as trap bait. Data collected were butterflies species, individuals per species, habitat characteristics included structure, composition, types of vegetation and physics and biotic component of habitat. Data analysis included species richness, species diversity, evenness, similarity coefficient, vegetation analysis, and correlation analysis between habitat characteristics and butterflies diversity. During the study, a total of 76 butterflies species were recorded included family of Papilionidae (11 species), Pieridae (6 species), Nymphalidae (43 species), Lycaenidae (14 species), and Hesperiidae (2 species). Species number for every type of habitat founded lowland forest 33 species, swamp forest 24 species, peat swamp forest 13 species, kerangas (dry-land habitat) 20 species, grassland 11 species, burned forest 27 species, Camp Ambung 37 species, and nursery camp 32 species. The highest for species richness is Camp Ambung and the lowest is grassland area. For species diversity the highest is lowland forest and the lowest is grassland. Types of habitat with low scale for evenness are grassland and burned forest. Types of habitat with highest scale for similarity are between Camp Ambung and nursery camp and the lowest are between peat swamp forest and grassland. There is founded a relation between habitat condition and butterflies diversity which depend on temperature and relative humidity, open area, water source, and vegetation as food plant, shelter, and cover for butterflies.
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Judul: Analysis of NaTFSA Electrolytes on Sodium Ion  Batteries Using the DC-DFTB-MD Method
Abstrak: Pelarut air digunakan dalam sistem elektrolit NaTFSA pada baterai ion natrium karena sifatnya yang relatif aman. Namun, menghasilkan tegangan yang cukup rendah sehingga memiliki keterbatasan dalam pengaplikasiannya. Untuk mengatasi hal tersebut dikembangkan elektrolit berkonsentrasi tinggi. Pada penelitian ini, pengaruh konsentrasi elektrolit NaTFSA terhadap sifat struktur, dinamika, dan elektronik dianalisis menggunakan metode dinamika molekul pada level mekanika kuantum. Analisis mikroskopik struktur dan dinamika elektrolit NaTFSA menunjukkan bahwa seiring kenaikan konsentrasi, koefisien difusi air menurun sedangkan konduktivitas elektrolit cenderung meningkat sebanding dengan mobilitas ion-ion., The aqueous solvent is used in the NaTFSA electrolyte system in sodium ion batteries because it is relatively safer. However, the voltage window of the sodium ion battery is narrower than that of the lithium ion battery, thus it still limits its practical implementation. To overcome this problem, a high concentration of electrolyte was developed. In this present work, the salt concentration effect on structural, dynamic and electronic properties were analyzed using molecular dynamics methods at the quantum mechanical level. Microscopic analysis of the structural and dynamical properties of the NaTFSA electrolyte showed that as the concentration increased, the water diffusion coefficient decreased while the electrolyte conductivity tended to increase.
Keyword: Conductivity, DC-DFTB, Diffusion constants, NaTFSA electrolytes, Sodium ion batteries