Judul: Pengelolaan penangkaran buaya di CV Surya Raya Balikpapan, Kalimantan Timur
Abstrak: CV Surya Raya is one of captive crocodiles in East Kalimantan. This captivity is not only breed comercial crocodiles such as estuarine crocodiles (Crocodylus porosus) for their skin and meat, but also breed siamese crocodiles (Crocodylus siamensis) and false gharial (Tomistoma schlegelii). Those two species are endangered extinct national and internationally. The limited information and management techniques of crocodiles so that this research needs to be done. This research aims are to identified management techniques of captive crococodiles in CV Surya Raya and to analysis succesful indicators of captive crococodiles in CV Surya Raya. The research has been held in June to October 2010. The data collected are aspects of management techniques of captive crocodiles in CV Surya Raya. Data were collected through observation, interview, and literature studies. Analysis data are using descriptive and quantitative analysis to the percentage of egg hatchability. The management crocodiles in captivity CV Surya Raya consists of five main activities such as caging management, feeding management, diseases and keeping healthy, reproduction management, and production usage management. Management techniques on captive breeding include in intensive management category. Based on reproduction and socio economics aspects this captive for estuarine crocodiles and siamese crocodiles was success, but for false gharial not too succesful. Factors that are influence reproduction aspect such as selection of seedling, sex ratio in each cage, cage location and breeding equipment, and technology hatching. An aspect social economics of society around captivity is influence by their participation on management activity.
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Judul: Keberhasilan Penangkaran Buaya Muara Crocodylus Porosus Schneider, 1801 Dengan Pola Pembesaran: Studi Kasus Penangkaran Buaya Di Provinsi Papua
Abstrak: Estuarine crocodile in Indonesia was included in the category of Appendix II of CITES, thus its utilization and trade must be as speciments from captive units. Captive with ranching scheme was allowed only in Papua province and had occured for ± 15 years. Unfortunately, the recent condition showed a decreasing of ranching units and the number of crocodiles ranched. These can become a threat to the wild population in form of direct harvesting from the crocodile’s natural habitat. Technical activity was needed to assure that the ranching products was adequate in term of enlargement period and economic cutting size, of which the data was not yet available. This research was aimed to (1) describe the mastery of knowledge and technology practice within the management of estuarine crocodile at a captive unit, (2) measure the success rat of the captive and (3) identify the support from stakeholders for the success and sustainability of this ranching scheme captivity. The research took place in February – July 2012 at CV. Bintang Mas in Jayapura. The methods used for collecting data were observation, interview and literature study, also using descriptive analysis to analyze the data. The result showed that the knowledge mastery was at medium rate, though technically the captive unit were able to apply most of captive main activities. Mortality rate of juveniles during the enlargement period (4-5 years) was at the medium level (10-30%). The limitating factor for developing the captive unit was the human resource which was not yet reconciled with the availability of infrastucture. Success index assessment within the biology and technical criteria resulted a number of 0.622 which suggested that this captive unit had a fine category (62.2%), and was considered succesful and be allowed to utilize its product. As to increase the success and sustainability of estuarine crocodile captive unit with ranching scheme, the support from stakeholders in form of actions (cooperation, knowledge enhancement and conservation awareness) and expectation towards the improvement of management form and sustainable use were definitely needed.
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Judul: Karakteristik Piezoelektrik Film LaxSr₁-xTiO3 di atas Substrat TCO
Abstrak: Studi material perovskite SrTiO3 sudah banyak dilakukan dan menunjukkan sifat feroelektrik, piezoelektrik, kuantum paraelektrik dan superkonduktor yang baik. Dengan penambahan dopant La2O3 diduga menambah performa sifat piezo dan karakteristik lainnya. Karakteristik film LaxSr₁-xTiO3 (LST) dengan variasi x= 0, 0.02, 0.04, 0.06 terbentuk pada suhu annealing 550 oC di atas substrat TCO melalui metode (Chemical Solution Deposition) CSD dan spin coating dengan 700 rpm pada kondisi suhu ruang dan tekanan atmosfer standar. Hasil menunjukkan, semakin banyak pendadah La maka nilai ketebalan film, ukuran rerata kristalit, parameter kisi, transmitansi, nilai konduktivitas (maksimum 589.7 S/cm pada sampel x=0.04 di frekuensi 10 Hz), nilai konstanta tegangan (c) dan muatan (d) piezo semakin meningkat. Dinamika bentuk grafik nilai tegangan (V) dan konstanta regangan mekanik (s) nampak mirip. Nilai V mencapai 0.127 V untuk x=0.06 (beban 50 g). Nilai maksimum c, d, s masing-masing mencapai 20.07 Vm/N, 1.14x10-8 C/N, 13642.71. Nilai band gap untuk x=0, 0.02, 0.04, 0.06 masing-masing 3.21 eV, 3.1 eV, 2.6 eV, 2.4 eV. La2O3 menambah performa sifat piezo, sehingga LST berpotensi sebagai sensor tekanan.
Keyword: CSD method, La2O3, LaxSr1-xTiO3, piezoelectric, TCO