Judul: Home Range of Post-Released Komodo Dragon (Varanus Komodoensis Ouwens, 1912) in Flores, East Nusa Tenggara
Abstrak: Salah satu upaya konservasi dalam pelestarian komodo (Varanus komodoensis), yaitu adanya kegiatan pelepasliaran komodo yang dilakukan oleh Lembaga Konservasi. BBKSDA NTT, Taman Safari Indonesia, dan PT. SMELTING telah melepasliarkan enam ekor komodo yang berasal dari penangkaran sejak 23 September 2023 di Cagar Alam Wae Wuul, Nusa Tenggara Timur. Penelitian ini bertujuan menghitung dan menggambarkan wilayah jelajah dan total pergerakan harian, serta mendeskripsikan kondisi habitat komodo pasca pelepasliaran. Penelitian dilakukan menggunakan metode radio tracking selama 11 hari. Hasil penelitian menunjukkan bahwa komodo yang dilepasliarkan dalam jangka pendek cenderung tidak bergerak jauh dari lokasi pelepasliaran. Rata-rata total pergerakan harian komodo yang dilepasliarkan sebesar 424,53 m/hari dengan rata-rata luas wilayah jelajah 34,11 ha dan rata-rata luas daerah inti 8,20 ha. Habitat yang digunakan oleh komodo berupa savana dan hutan monsun yang didominasi oleh semak dan pepohonan. Keberadaan anjing liar dan akses jalan kendaraan berpotensi menjadi ancaman terhadap pelepasliaran komodo., One of the conservation efforts for komodo dragon (Varanus komodoensis), is the translocation of komodo by the conservation institute. BBKSDA NTT, Taman Safari Indonesia, and PT. SMELTING has released six captive bred komodo dragons in 23 September 2023 at Wae Wuul Nature Reserve, East Nusa Tenggara Province. This research aims to calculate and describe home ranges and total daily movements, as well as describe the habitat conditions of komodo dragons. Research was carried out at the Wae Wuul Nature Reserve using the radio tracking method for 11 days. Results showed that translocated komodo dragons tend to stay near the initial release location. The average total daily movement translocated komodo is 424.53 m/day with average home range of 34.11 ha and average core area of 8.20 ha. The habitats used by komodo dragons are savanna and monsoon forests dominated by bushes and trees. The presence of feral dogs and vehicle road access have the potential to pose a threat to the translocated komodo dragon.
Keyword: komodo, pasca pelepasliaran, pelacakan radio, translokasi

Judul: Studi Pola Penggunaan Ruang Berbagai Kelas Umur Biawak Komodo (Varanus Komodoensis Ouwens) Di Loh Buaya-Pulau Rinca Taman Nasional Komodo, Nusa Tenggara Timur
Abstrak: Komodo represent totally disappeared threatened giant salamander. The existence of this endemic reptile only gone in the round of Komodo National Park (KNP) that is in Komodo Island, Rinca Island, Gili Motang, Nusa Code (Jessop et al., 2007) and minor partly in north and west of Flores Island (Erdmann, 2004). Differ from research about population or inventory Komodo have become routine activity side organizer KNP, still a lot of ecology aspect from Komodo which still have to be checked specially about habitat interaction in KNP area, and also spatial ecology (home range and movement). The aim of this research area to identify activity type of komodo according to vegetation type and to know it’s home range and daily path length. Methodology of this research were used Focal animal sampling method and Continous recording method. the registry of Komodo position with Absolute positioning method by using GPS receiver at the time of Komodo do activity at certain dot. Monitoring done pursuant to variation of age class (whelp, juvenile and adult) with each five multiply repetition. Mangrove and savannah used by whelp and adult especially to exploring areas, while the juvenile especially to perceive. In monsoon forest, most activity often done by whelp and juvenile is exploring areas, while adult more amount perceiving. Whelp, juvenile and adult often use savannah as place to activity than monsoon forest and mangrove. The highest savannah used time percentage that is in whelp class. All class age of Komodo use the more amount time to rest, but if seen from age old class, juvenile which at longest rest. Furthermost path length is whelp with average thread 1659,954 ± 628,732 m, later then adult as far as 1427,227 ± 1121,776 m and juvenile as far as 820,460 ± 391,288 m. Whelp take possession of highest home range sequence broadly 12,104 ± 8,227 ha, later then adult Komodo and juvenile broadly 9,383 ± 9,805 ha and 3,412 ± 2,048 ha. Komodo in Loh Buaya use three vegetation type (savannah, monsoon forest and mangrove) as it’s habitat. There are relation between activity type with vegetation type posed at with the result chi-kuadrat test (χ ²) at real level 0,005 with value χ ²aritmetic > χ ² table = 71,133 > 25,188. Komodo very like savannah and most daily activity type often done is rest. The highest home range and daily path length that is in juvenile. Keywords : Komodo, Age Class, Space Use, Home Range, Komodo National Park
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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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