Judul: Perbandingan Ukuran-Ukuran Bagian Tubuh Lebah Pekerja Apis dorsata (Lebah Hutan) pada Empat Lokasi
Abstrak: Apis dorsata bee is Indonesia local bee, and generaly can be found in the forest. Until now A. dorsata bee has not been cultured like A. mellifera dan A. cerana. A. dorsata, a honey producing bee, has larger body size than A. florea and A. cerana. Limited information about the producing honey bee, especially A. dorsata, in this study it is to be compare the body sizes of A. dorsata worker bees. The data used in this study the results of measuring were the size of body parts of A. dorsata worker bees, those from; North Luwu, Tesso Nilo National Park, Sumbawa, and The Lake Sentarum National Park. The number of worker bees A. dorsata used in this study were 400 samples (100 samples from each location). The eight body variables based on Ruttner et al. (1988), which the length of proboscis (X1), the length of the front wing (X2), the width of the front wing (X3), the width of abdomen (X4), the length of hind leg femur (X5), the length of hind leg tibia (X6), the length of hind leg metatarsus (X7), and the width of hind leg metatarsus (X8), and those eight variables by descriptive statistical analysis and independent 2-sample t-test. Some differences in size of the body parts of worker bees A. dorsata among those from North Luwu, Tesso Nilo, Sumbawa and The Lake Sentarum are seen in the length of proboscis (X1), the length of the front wing (X2), the width of the front wing (X3) and the length of hind leg femur (X5).
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Judul: Geometric Morphometrics Wing Venation of Bali Honey Bees Apis cerana
Abstrak: Apis cerana merupakan lebah madu yang tersebar di Asia. Di Indonesia, A. cerana tersebar di Sumatra, Kalimantan, Jawa, Bali, Lombok, Flores, dan Sulawesi. Lebah madu termasuk dalam Ordo Hymenoptera, Famili Apidae, Genus Apis dengan ciri khas yaitu adanya sengat pada lebah betina. Lebah Apis cerana banyak dibudidayakan di Indonesia karena potensinya sebagai lebah penghasil madu dan dapat hidup di dataran tinggi maupun dataran rendah. Penelitian ini bertujuan untuk menganalisis variasi landmark venasi sayap A. cerana serta analisis kekerabatannya dari tiga desa di Bali. Sayap depan lebah pekerja A. cerana dianalisis menggunakan morfometrik geometris berdasarkan 19 landmark venasinya. Analisis morfometrika geometris berdasarkan pergerakan landmark grid deformasi venasi sayap A. cerana berhasil menunjukkan perbedaan intraspesies pada lebah yang berasal dari lokasi berbeda. Variasi landmark pada A. cerana yang berasal dari Pitra dan Tenganan memiliki pergerakan landmark yang menjauhi nilai rerata. Hasil ini berbeda dengan A. cerana asal Melaya yang memiliki pergerakan landmark mendekati nilai rerata. Landmark venasi sayap A. cerana asal Bali yang paling berkontribusi terhadap pergerakan landmark adalah 8, 10, dan 11. Nilai bending energy tertinggi terlihat pada A. cerana Tenganan., Apis cerana (honey bee) spread across Asia. In Indonesia, A. cerana spread around Sumatra, Kalimantan, Java, Bali, Lombok, Flores and Sulawesi. Honey bees belong to the Hymenoptera Order, Apidae Family, Apis Genus with distinctive feature, sting on the female bee. Apis cerana are widely cultivated in Indonesia because of their potential as honey-producing bees and ability to live in the highlands and lowlands. This study aims to analyze variations in the landmark venation of A. cerana wings and kinship analysis of the bee from three villages in Bali. The fore wings of worker bee A. cerana were analyzed using geometric morphometrics based on 19 landmarks. Geometric morphometric analysis based on the deformation grid landmark movement of the wing venation of A. cerana succeeded in showing intraspecies differences in bees from different locations. Landmark variations in A. cerana from Pitra and Tenganan have landmark displacement that move away from the mean value. This result is different from A. cerana from Malaya which has movement of landmarks close to the mean value. The wing venation landmarks of A. cerana from Bali that contribute the most to the movement of landmarks are 8, 10, and 11. The highest bending energy values were seen in A. cerana Tenganan.
Keyword: Apis cerana, Geometric, Morphometrics, Wing Venation

Judul: Studi Konduktivitas Elektrolit Polimer Kitosan/PEG+KCl
Abstrak: Solid polymer electrolyte can be classified as a solid material that has the ability to conduct electric current by the movement of ions and has the same functions as an electrolyte solution. Polymer electrolyte film based on chitosan/PEG+KCl have been produced. The process of making is done by mixing a solution of acetid acid with chitosan, PEG and Potassium Chloride (KCl), polymer electrolyte were obtained by the casting technique. Polymer electrolyte with good ionic conductivity properties were characterized by FTIR analysis for the identification of the functional group. The results of FTIR analysis indicates that complexes of polymer electrolyte have formed. The best ionic conductivity values of 5.786 x 10-6 Scm-1 were obtained for the sample containing 45%wt of KCl. Activation energy obtained by using Arrhenius plot, activation energy from polymer electrolyte film with good conductivity is 0.270 eV.
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