Judul: Management and Economic Valuation of Rhinoceros Hornbill in Bird Park TMII
Abstrak: Rangkong badak banyak diburu oleh masyarakat karena memiliki nilai ekonomi yang tinggi. Salah satu upaya untuk mengurangi kepunahan spesies akibat perburuan adalah dengan melakukan konservasi ex situ. Penelitian ini bertujuan untuk mengidentifikasi aspek pengelolaan rangkong badak (Buceros rhinoceros) secara ex situ dan menghitung nilai ekonominya berdasarkan biaya pemeliharaan dan willingness to pay pengunjung Taman Burung TMII untuk memelihara dan memanfaatkan rangkong badak sebagai satwa peraga. Hasil penelitian ini menunjukkan rangkong badak di Taman Burung TMII belum mengalami perkembangan jumlah individu karena belum terjadi perkawinan. Seluruh aspek pengelolaan yang dilakukan sudah cukup baik. Akibat pandemi Covid-19, jumlah tenaga kerja lapang dikurangi sehingga menyebabkan pekerjaan yang dilakukan menjadi lebih banyak. Nilai ekonomi rangkong badak berdasarkan biaya pemeliharaan yang dikeluarkan setiap bulannya sebesar Rp 2.620.000. Nilai ekonomi berdasarkan willingness to pay dari pengunjung untuk memelihara rangkong badak sebesar Rp 1.064.737 per ekor dan untuk pemanfaatan sebagai satwa peraga sebesar Rp 15.105., Rhino hornbill is hunted by many people because of its high economic value. One of the efforts to reduce the species extinction due to illegal hunting is to carry out an ex situ conservation. This study aims to identify the aspects of ex situ management of rhino hornbill (Buceros rhinoceros) and calculate its economic value based on maintenance costs and 'willingness to pay' by the visitors of TMII Bird Park to take care and use rhino hornbill as a display animal. The results of this study indicate that the individuals number of rhino hornbill in the TMII Bird Park has not increasing because there has not been any mating. All aspects of management carried out are quite good. Due to the Covid-19 pandemic, the number of field workers has been reduced, causing more work to be done. The economic value of the rhinoceros hornbill is based on the monthly maintenance costs of IDR 2,620,000. The economic value based on the willingness to pay by the visitors to take care rhino hornbill is IDR 1,064,737 per individuals and for the use of display animals is IDR 15,105.
Keyword: Management, rhinoceros hornbill, willingness to pay

Judul: Preservation Techniques and Visitor Perception  Towards Conservation Efforts at TMII Jakarta Bird Park Jakarta
Abstrak: Kuau raja merupakan jenis burung yang populasinya semakin terbatas sehingga diperlukan upaya konservasi ex-situ untuk mendukung upaya pelestariannya. Taman Burung TMII merupakan lembaga konservasi ex situ, sekaligus sebagai sarana eduwisata bagi masyarakat. Penelitian ini bertujuan mengidentifikasi aspek pemeliharaan kuau raja, persepsi dan pengetahuan pengunjung, dan nilai WTP pengunjung terhadap upaya pelestarian kuau raja di Taman Burung TMII. Penelitian ini dilaksanakan di Taman Burung TMII Jakarta pada bulan Maret sampai April 2022. Metode yang digunakan adalah observasi lapang, wawancara, survei, dan studi literatur. Hasil penelitian menunjukkan aspek pemeliharaan sudah cukup baik, namun perlu beberapa perbaikan dan penambahan fasilitas perkandangan dan pakan. Pengunjung memiliki persepsi positif dan pengetahuan cukup tinggi tentang kuau raja sebagai spesies burung dilindungi, dan perlunya usaha pelestariannya baik insitu maupun exsitu. Pengunjung bersedia membayar untuk mendukung pelestarian kuau raja dengan nilai rataan WTP sebesar Rp. 36.111 dengan perkiraan nilai ekonomi total sebesar Rp. 188.968.000,00 perbulan. Faktor tingkat pendidikan terakhir dan besarnya pendapatan pengunjung berpengaruh nyata terhadap besar-kecilnya nilai WTP dari pengunjung., Great argus is a species of bird whose population is increasingly limited so ex-situ conservation efforts are needed to support its conservation efforts. TMII Bird Park is an ex situ conservation and as of tourism-based education for public. This study aims to identify aspects of the maintenance of Great argus, the perception and knowledge of visitors, and the value of visitors' WTP for efforts to preserve Great argus in the TMII Bird Park. This research was conducted at TMII Bird Park Jakarta from March to April 2022. The methods used are field observations, interviews, surveys, and literature studies. The results showed that the maintenance aspect was quite good, but it needed some improvements and additional cage and feed facilities. Visitors have a positive perception and high knowledge about the great argus as a protected bird species, and the need for conservation efforts both in situ and exsitu. The average value of the visitor's WTP is Rp. 36.111 with an estimated total economic value of Rp. 188.968.000 / month. Factors influencing the WTP value of visitor respondents are the last level of education and income.
Keyword: Great argus, preservation techniques, visitor perception

Judul: Pervaporasi Alkohol Menggunakan Membran Polistirena-SDS
Abstrak: Polystyrene (PS) membrane with SDS as porogen can be utilized as a filter in alcohol pervaporation process. The membrane was prepared using inversed phase method with PS:SDS:dichloromethane solvent composition were 17:0:83; 17:0.5:82.5; 17:1:82; 17:1.5:81.5; and 17:2:81. Homogenization of mixtures were carried out for 10 and 20 hours and casted on glass plate surface then submerged it into water with temperature of 60 °C. Pervaporation capability was evaluated from flux value and separation factor. The average of water flux values in 20 hours sonication were higher than the values in 10 hours sonication. The highest separation factor was observed in PS membrane with 0.5% SDS concentration and homogenization in 20 hours is 5.23. Application of PS membrane in pervaporation as showed by purities of alcohol value using gas chromatography method revealed that the purities increase from 91.6 to 93.4%. Therefore, certain SDS addition can increase the performance of PS membrane in alcohol purification.
Keyword: