Judul: Infeksi Cacing Gastrointestinal pada Harimau Sumatera (Panthera tigris sumatrae) di Taman Margasatwa Ragunan
Abstrak: The aim of this research was conducted to investigate the prevalence values and the intensity of infection of gastrointestinal helminths from Sumatran Tigers (Panthera tigris sumatrae) in Ragunan Zoo. A total of 26 individual stool samples were collected from 26 tigers at 4 areas. These samples were examined using modified McMaster, simple floatation, and modified sedimentation techniques based on sex and age group. The result showed that the identified helminth eggs were Toxocara cati and Toxascaris leonina (Ascarid) and also Ancylostoma tubaeforme (Strongylid). There were 25 (96%) of the examined animals infected by Ascarid (96%) and Strongylid (68%). All male tigers (100%) were infected by Ascarid and 64% were infected by Strongylid. There were 83% female tigers infected by Ascarid and 67% infected by Strongylid. The prevalence of the age group of <5, 5-10, and >10 years old, consecutively indicated that 100%, 91%, and 83% were infected by Ascarid and 67%, 64%, and 67% were infected by Strongylid. The highest intensity of Ascarid infection (10625 EPG) was found in females while the highest intensity of Strongylid infection (3650 EPG) was found in males. Those intensity of infection were found in the age group of <5 years old.
Keyword: Bogor Agricultural University (IPB), Sumatran tiger, Ragunan zoo, gastrointestinal helminths

Judul: Infeksi cacing gastrointestinal pada Macan Tutul Jawa (Panthera pardus melas) di Pusat Penyelamatan Satwa Cikananga dan Situgunung Park
Abstrak: Javan leopard (Panthera pardus melas Cuvier, 1809) is an endemic species of Indonesia that can only be found in Java island. This species is stated as critically endangered, so that the conservation act is needed to save Javan leopard. The objective of this research is to identify and determine the infection and the intensity of the gastrointestinal helminths in Javan leopard from Pusat Penyelamatan Satwa Cikananga (PPSC) and Situgunung Park, Taman Nasional Gunung Gede Pangrango (TNGGP). Four individual stool samples were collected from PPSC on Januari-Februari 2014 and 3 stool samples were collected from Situgunung Park, TNGGP on May 2013 and March-June 2014. All samples were examined using modified McMaster, flotation, and modified sedimentation techniques. The result showed that all samples were infected by gastro-intestine helminths. The identified helminths were strongylids (85,71%), trichurid and ascarids (57,14%) and Strongyloides (28,57%). The range of eggs per gram (EPG) varied from <50-8825 EPG. The highest count were found in strongylid (<50- 8825 EPG) in PPSC, followed by trichurid (<50-3750 EPG) in PPSC and Strongyloides (700-1100 EPG) in SGP. The lowest count was ascarid (<50 EPG) which was found in PPSC and SGP.
Keyword: Bogor Agricultural University, gastrointestinal helminths, Javan leopard, EPG

Judul: Pembuatan Film Lithium Niobate (LiNbO3) pada Beberapa Molaritas dan Karakterisasi Sifat Lisrik, Sifat Optik dan Struktur Kristalnya
Abstrak: Fotodioda film lithium niobate (LiNbO3) telah berhasil dibuat dengan menumbuhkan LiNbO3 di permukaan substrat Si(100) tipe-p dengan menggunakan metode sol gel berdasarkan teknik spin coating pada kecepatan putar 3000 rpm selama 30 detik. Film LiNbO3 dibuat dengan konsentrasi 0,5 M, 1 M, dan 2 M dan proses annealing pada suhu 900°C selama 1 jam, 8 jam, 15 jam, dan 22 jam. Dilakukan karakterisasi sifat listrik, optik, dan struktur film. Karakterisasi I-V dilakukan pada kondisi gelap dan terang. Hasil yang diperoleh menunjukkan bahwa film bersifat fotodioda. Hasil karakterisasi I-V juga menunjukkan bahwa konsentrasi molaritas turut mempengaruhi bentuk dioda film, yaitu molaritas yang makin tinggi maka bentuk dioda filmnya itu semakin baik, yaitu pada molaritas 1 M dan waktu annealing 15 jam. Konduktivitas listrik (σ) film annealing selama 1 jam, 8 jam, 15 jam, dan 22 jam berturut-turut adalah 1.49 x 10-5 S/cm, 2.05 x 10-5 S/cm, 2.27 x 10-5 S/cm, 6.66 x 10-5 S/cm. Nilai konduktivitas listrik (σ) tersebut berada dalam rentang σ semikonduktor, sehingga film LiNbO3 yang dihasilkan merupakan material semikonduktor. Selain karakterisasi I-V dan konduktivitas listrik dilakukan juga karakterisasi konstanta dielektrik (ε). Nilai ε film menurun ketika tegangan ditingkatkan dari 1 volt, 3 volt, dan 5 volt. Sedangkan semakin lama film ditahan pada suhu 900o C mengakibatkan konstanta dielektriknya meningkat. Karakterisasi sifat optik meliputi pengukuran absorbansi dan reflektansi film. Kurva absorbansi yang diperoleh memperlihatkan panjang gelombang yang paling banyak diserap dan dipantulkan, yaitu berkisar dari 400-500 nm dan 570-600 nm. Data reflektansi film dapat digunakan untuk menghitung indeks bias (n) dan energy gap (Eg). Kurva absorbansi yang diperoleh memperlihatkan panjang gelombang yang paling banyak diserap dan dipantulkan yaitu berkisar dari 400-500 nm dan 570-600 nm Karakterisasi sifat struktur berupa pengujian XRD. Hasil yang diperoleh memperlihatkan intensitas difraksi tertinggi dimiliki oleh film LiNbO3 pada waktu annealing 1 jam, sedangkan intensitas difraksi terendah dimiliki oleh film LiNbO3 pada waktu annealing 22 jam.
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