Judul: Toxocarosis pada Sapi Potong Peternakan Rakyat di Kecamatan Ujung Jaya, Sumedang
Abstrak: The study was carried out to investigate the prevalence, intensity of infection, and the related risk factors of toxocarosis in cattle of Ujung Jaya Subdistrict, Sumedang. The number of 108 fecal samples were collected and examined by modified McMaster method to determine the number of Toxocara eggs per gram (EPG). The potential of risk factor regarding to sex, age, and livestock management were obtained by interviewing the farmer. The result showed that of the total 108 fecal samples, 11 samples were positive to toxocarosis with prevalence of 10.18%. The mean number of eggs per gram fecal in infected cattle was 7 005.5 ± 3 534.4. The highest prevalence was observed in calf ≤ 6 month of age group only (42.31%) and was more prevalence in male (32.14%) than female (2.50%) (P<0.05). The prevalence of toxocarosis among different husbandary practices of cages management, feeding, sanitary, and anthelmintic was not significant (P>0.05).
Keyword: Ujung Jaya, toxocarosis, Sumedang, risk factor, prevalence

Judul: Kajian Penyakit Parasit Darah pada Sapi Potong Peternakan Rakyat di Kecamatan Ujungjaya, Kabupaten Sumedang, Jawa Barat
Abstrak: The purpose of this study was to determine the prevalence, risk factor and parasitemia blood parasite based on age and sex category on cattle in Ujungjaya sub-district, Sumedang regency, West Java. Blood samples were collected from 139 cattle in July 2012. Thin blood smears were made on glass slide, fixed in methanol, stained with Giemsa 10% and observed using a microscope with 1000x magnifications. The amount of intraerythrocytic parasite counted for every 500 red blood cells. The potential of risk factor in regard with age, sex, ways to raise, flies and tick control were analyzed with chi-square. The result showed that the highest prevalence was observed in Anaplasma sp. (38.8%), followed by Babesia sp. (33.8%), and Theileria sp. (22.3%). The prevalence of babesiosis and anaplasmosis are influenced by age and ways to raise (p<0.05), while theileriosis had not significantly different. Sex did not affect the level of prevalence. The prevalence of babesiosis is influenced by flies and tick control (p<0.05), while anaplasmosis and theileriosis did not differ significantly. In general, the level of parasitemia increased along with increasing by age. The parasitemia of babesiosis in cow had differently with bull (p<0.05), while anaplasmosis and theileriosis had not significantly different. Percentage parasitemia at various age and sex have the same value that is <1%, which is relatively mild levels of parasitemia.
Keyword: Ujungjaya, risk factor, prevalence, level of parasitemia, intraerythrocytic parasite

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.
Keyword: