Judul: Parasitemia dan Diferensial Leukosit Kerbau Perah (Bubalus bubalis) Akibat Parasit Darah di Kabupaten Tapanuli Utara, Sumatera Utara.
Abstrak: The purpose of this study was to determine percentage of blood parasite, parasitaemia based on sex category and differential of leucocyte in dairy buffaloes in North Tapanuli regency, North Sumatera. Blood samples were collected from 10 adult female buffaloes and 10 adult male buffaloes using blood smear method. Samples were processed in glass slide, stained with Giemsa 10% and observed using a microscope with 1000x. The parasitaemia were counted for every 500 red blood cells. Differential absolute of leucocyte were calculated with differential relative of leucocyte multiplied by total leucocyte count. The result showed buffaloes infections caused by Anaplasma sp., Theileria sp, and Babesia sp. The highest percentage were caused by triple infections 45% (Anaplasma sp., Theileria sp., Babesia sp.), followed by double infections 30% (Anaplasma sp., Theileria sp.), double infections 10% (Theileria sp., Babesia sp.), single infection 10% (Anaplasma sp.), and the lowest by single infection 5% (Theileria sp.). By the sex of mean value parasitaemia was not showed significantly different (p>0.05). single infection (Anaplasma sp.). Total Leucocyte count about single infection (Anaplasma sp), and lymphocyte count about single infection (Anaplasma sp.), double infections (Theileria sp., Babesia sp.),and triple infections (Anaplasma sp., Theileria sp., Babesia sp.) were showed significantly different (p<0.05).
Keyword: differential leucocyte, blood parasite, parasitaemia

Judul: Studi kasus infeksi parasit intraseluler darah merah pada kerbau lumpur (Bubalus bubalis) dari kecamatan Tenjolaya, Kabupaten Bogor, Jawa Barat.
Abstrak: This study was conducted to observe the infection of intraerythrocytic parasit. There were a total 64 blood sample of four buffaloes from Tenjolaya, Bogor, West Java. Sample was collected twice a week. Thin blood smear on glass slide were made, fixed in methanol,stained with Giemsa 10%. The parasitemia (percent of infected RBCs) was determined by enumerating the number of infected RBCs in relation to the number of 500 uninfected RBCs. Microscopic examination revealed the occurance of Babesia, Theileria and Anaplasma in RBC. Parasitemia in those bufallo were 0.00625 ± 0.009 % for Babesia, 0.058 ± 0.032% for Theileria and 0.230 ± 0.045 % for Anaplasma. Those low infected buffaloes had potential to become carrier and source of Babesiosis, Theileriosis and Anaplasmosis for naive population around.
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Judul: Peran Surfaktan Setiltrimetilamonium Bromida dan Natrium Dodesil Sulfat pada Sintesis ZnO dengan Metode Hidrotermal
Abstrak: Zno crystal is the main preference material in various applications recently, such as in semiconductors, ultraviolet lasers, and catalysts. This study aims to synthesize ZnO with addition of surfactant. ZnO crystals were synthesized by reacting ZnSO4, KOH, and surfactants using hydrothermal method. The first step was to determine the best ratio of ZnSO4: KOH (1:2; 1:3; 1:4, and 1:5) based on X-ray diffraction. The second step was to evaluate the role of surfactan cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) on the synthesis of ZnO crystals. The result of this study showed the best ratio of ZnSO4:KOH was 1:3, based on the least of impurities and the highest degree of crystallinity (85.64%). The addition of surfactant CTAB and SDS in the synthesis of ZnO increased the degree of crystallinity, which were 98.28% and 92.17%, respectively. Based on mathematical calculation using Scherrer equation, the crystal size without surfactant was 32 nm, whereas with CTAB and SDS the crystallited size were 28 nm and 29 nm, respectively. The degree of crystallinity and crystal size indicated that CTAB surfactant produce ZnO crystals with the best characteristics as compared to SDS surfactant or without surfactant.
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