Judul: Determining Minimum and Optimum Viable Population Size of Rusa Deer (Rusa timorensis) Based on Demographic Parameters : Study Case at Pananjung Pangandaran Natural Park / Nature Reserve and Alas Purwo National Park
Abstrak: One of the main goals of conservation is to maintain and increase the population size. In order to conserve wildlife population, Minimum Viable Population (MVP) and Optimum Viable Population (OVP) for high utilized wild animal are needs to know. Rusa deer which protected by the conservation law have a great economic value. The aims of this study are to determine MVP and OVP of rusa deer to make do rusa deer benefit without intrude its population stability. Algebra linear equation system from matrix Leslie was used to determine MVP and density dependence Leslie matrix was used to determine the OVP. MVP size for rusa deer population in Pananjung Pangandaran Natural Park / Nature Reserve is 97 individuals and for Alas Purwo National Park is 10.367 individuals. OVP size for rusa deer population in Pananjung Pangandaran Natural Park / Nature Reserve is 751 individuals, and for Alas Purwo National Park is 21.682 individuals.
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Judul: Management and Level of Welfare and Economic Valuation of Timor Deer (Rusa timorensis) in Ragunan Wildlife Park Jakarta
Abstrak: Rusa timor (Rusa timorensis) merupakan salah satu satwa liar yang memiliki nilai ekonomi cukup tinggi, sehingga terus berkembang usaha konservasi eksitu dan penangkarannya. Penelitian ini bertujuan menganalisis pengelolaan dan tingkat kesejahteraan, pengelolaan reproduksi dan tingkat keberhasilannya, dan menghitung besarnya nilai ekonomi berdasarkan biaya pemeliharaan dan kesediaan membayar pengunjung (willingnes to pay) guna mendukung upaya konservasi rusa timor di Taman Margasatwa Ragunan Jakarta. Metode yang digunakan berupa observasi lapang, wawancara, dan studi literatur. Data yang terkumpul dianalisis secara deskriptif kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa pengelolaan kesejahteraan rusa timor sudah baik dengan capaian tingkat kesejahteraan satwa termasuk kategori sangat baik dengan nilai terbobot 80,15. Pengelolaan reproduksi belum dilakukan secara optimal dengan tingkat keberhasilan reproduksi rusa timor tergolong sedang sebesar 36,1%. Nilai ekonomi rusa timor berdasarkan biaya pemeliharaan sebesar Rp1.664.259,5/ekor/bulan dan rata-rata nilai WTP sebesar Rp127.150,00/individu dengan perkiraan nilai ekonomi total sebesar Rp12.715.000,00., The timor deer (Rusa timorensis) is one of the wild animals that has quite a high economic value, so that its ex-situ conservation and captive breeding efforts continue to develop. This research aimed to analyze management and welfare levels, reproductive management and success rates, and calculate the amount of economic value based on maintenance costs and willingness to pay for visitors to support timor deer conservation efforts in the Ragunan Wildlife Park Jakarta. The methods used were field observations, interviews, and literature studies. The collected data were analyzed descriptively qualitatively and quantitatively. The results of the research showed that the welfare management of timor deer was good with the level of animal welfare achieved a very good category with a weighted value of 80,15. Reproductive management had not been carried out optimally with the reproductive success rate of timor deer being classified as moderate at 36,1%. The economic value of timor deer was based on maintenance costs of IDR 1.664.259,5/head/month and an average WTP value of IDR 127.150,00/individual with an estimated total economic value of IDR 12.715.000,00.
Keyword: Kesejahteraan satwa, nilai ekonomi, pengelolaan, rusa timor, taman margasatwa ragunan, animal welfare, economic value, management, ragunan wildlife park jakarta

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4