Judul: Conservation of The Asiatic Soft-Shell Turtle Amyda cartilaginea (Boddaert, 1770) in The Belawa Village, Lemah Abang District, Cirebon, West Java
Abstrak: Asian soft-shell turtle (Amyda cartilaginea Boddaert,1770) has been considered as sacred turtle by the community of Belawa Village. In the village, they are found in the irrigation channels and fish ponds, as well as in special holding ponds in Cikuya recreation area built by the community. In 2010 a disease outbreak caused by bacteria had caused mass deaths of turtles in the holding ponds. Two years has passed since the outbreaks, and the number of the survived A. cartilaginea is not known. This study aimed to obtain data on recent population of A. cartilaginea, activity patterns and time allocation and management efforts and public perception of the existence A. cartilaginea in the Belawa Village. The study was conducted on March-May 2012, by inventory of turtles population occuring in water bodies in the village. Management efforts and public perception information was obtained by interview and questionnaires. Result of census found 177 A. cartilaginea in Belawa Village mostly concentrated at the holding pond at Cikuya recreation area with a complete structure of the hatchlings, adolescents, young adults and adults. Sex ratio of adults was 1:2,22 and young adults was 1:0,67. A. cartilaginea is usually stay inside mud in the mud and rest at night until noon and will actively breathe and swim in the afternoon. They allocated more time to stay in the mud as much as 54.196%. Missmanagement of A. cartilaginea by holding almost all population in the community’s pond has threathened the population of A. cartilaginea in Belawa Village. Fortunately, the people of Belawa Village have positive perception that A. cartilaginea is a sacred animal and know that is existence in an alarming situation.
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Judul: Pemeliharaan Labi-labi (Amyda cartilagínea Boddaert, 1770) dan Uji Coba Preferensi Pakan Anakan di Penangkaran PT. Ekanindya Karsa, Kabupaten Serang
Abstrak: Softshell turtle (Amyda cartilaginea Boddaert, 1770) is categorized as Appendix II CITES and vulnerable in IUCN Red List Data Book. Captive breeding of this turtle is important to continue their sustainable utilization. PT Ekanindya Karsa was one of the pioneer in captive breeding of this species since 2008. Until now, there reference related to management and maintenance techniques of softshell turtle in captivity are few. This research aims to asess the characteristics of softshell turtle in captivity, document the management and maintenance techniques and analyse feeding preferences especially juveniles. The results will assist wildlife conservation efforts and improve it for the future. Research was carried out at PT. Ekanindya Karsa from July to October 2012. Data collected includes characteristics of shoftshell turtle, which consists morphometry and morphological of shoftshell turtle, maintenance of turtle in captivity and foods preference of juveniles. Nine adult shoftshell turtle (3 males and 6 females), 25 shoftshell turtle eggs, and 45 juveniles between 1 - 3 months were observed. Food tested comprises of tuna, shrimp, spinach and sweet potatoes which are given to 15 juveniles. Level of food intake, growth, cost efficiency and activity of juveniles were measured to assess ideal feeding time with focal animal sampling methods. Mean curved-carapace length of an adults (CCL) is 43.33 cm, curved-carapace wide (CCW) 35.33 cm and body weight 10.11 kg. Juvenil non test consists of three clutches with range of CCL is 4.21 - 4.68 cm; CCM is 3.68 - 4.24 cm and body weights of 9.95 – 12.59 g during hatching. Softshell turtle’s eggs had range of diameter of 2.84 - 3.95 cm and weight of 12.00 - 24.00 grams. Maintenance of turtle in captivity is quite well includes aspects of habitat maintenance, management of food and handling of eggs. However, diseases management has not been handled correctly in the captivity as shown by some untreated diseased adult. Preferred food of 15 juveniles were sweet potato and tuna. Feeding activities were visible in the morning (7.00 – 10.00 am) and evening (7.00 – 10.00 pm).
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4