Judul: Studi Pustaka Karateristik Biologis dan Medis Dugong sebagai Satwa Konservasi.
Abstrak: Dugong dugon merupakan hewan mamalia herbivora laut dari ordo Sirenia dan dikatagorikan sebagai spesies vulnerable oleh IUCN (2015). Berdasarkan status tersebut, kajian mengenai aspek biologi dan medis dugong perlu diperdalam untuk mendukung usaha konservasi medis dugong. Tujuan dari studi pustaka ini adalah mengkompilasi sekaligus memberikan pemahaman mengenai aspek biologis dan medis dugong, sehingga dapat diterapkan pada program konservasi yang terkait. Studi ini menggunakan metode kajian/studi literatur dengan penelusuran karya tulis ilmiah pada media daring (online) dengan kata kunci “dugong”,” dugong medical aspect”, “dugong conservation”, “marine conservation”, dan “dugong anatomy”. Melalui metode penelusuran tersebut, sebanyak 80 karya tulis telah dihimpun dan dikelompokkan dalam aspek biologi dan aspek medis dugong. Aspek biologi dugong membahas anatomi, fisiologi, dan perilaku dugong. Aspek medis dugong membahas teknik diagnosa dan penyebab kematian pada dugong. Sampai saat ini program konservasi dugong sudah banyak dilakukan baik oleh pemerintah maupun lembaga swadaya masyarakat. Kendala yang dihadapi adalah kurangnya informasi di sekitar masyarakat nelayan mengenai dugong, implementasi program yang masih sulit dilakukan, dan perburuan liar yang masih merajalela. Dukungan pemerintah, masyarakat lokal, LSM, dan perguruan tinggi sangat diperlukan untuk menunjang penelitian dan program konservasi dugong.
Keyword: dugong, aspek medis, konservasi

Judul: Tingkah laku dan karakteristik suara Dugong dugon di Sea World Indonesia, Taman Impian Jaya Ancol, Jakarta
Abstrak: Dugong (Dugong dugon) merupakan mamalia laut yang bersifat herbivora dan memiliki status rentan terhadap kepunahan dalam IUCN Red List of Threatened Animals. Untuk memastikan keberlanjutan spesies tersebut di alam, dibutuhkan upaya pelestarian dengan konservasi baik secara in-situ maupun ex-situ. Upaya konservasi tersebut membutuhkan dukungan informasi dari penelitian-penelitian mengenai kehidupan dugong, seperti tingkah laku, karakteritik suara, pola makan, pola reproduksi, dan masih banyak lagi. Penelitian ini bertujuan untuk mendeskripsikan tingkah laku dan karakteristik suara dugong pada lingkungan buatan di Sea World Indonesia, Taman Impian Jaya Ancol, Jakarta.
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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