Judul: Faktor risiko lokasi peternakan dan umur terhadap kejadian infeksi Eimeria sp pada sapi Bali di kabupaten Karangasem, Bali : kajian lintas seksional
Abstrak: Penelitian ini dilakukan untuk menduga tingkat prevalensi coccidia serta rata-rata jumlah ookista Eimeria sp pada lokasi dataran rendah dan dataran tinggi, serta pada tingkat umur sapi bali berbeda di kabupaten Karangasem, Bali. Penelitian menggunakan metode pengambilan contoh tinja segar (20 gr) dilakukan pada sapi umur kurang dari 6 bulan, antara 6 - 12 bulan, dan lebih 12 bulan. Tempat pengambilan contoh di kabupaten Karangasem, dari 8 kecamatan diantaranya 4 kecamatan terletak di daerah dataran rendah (Manggis, Karangasem, Abang dan Kudu), 4 kecamatan lain terletak di dataran tinggi (Rendang, Selat, Sedimen, Bebandem). Contoh diambil secara multistage random sampling (penarikan contoh acak bertingkat), selanjutnya contoh dilakukan metode pemeriksaan dan identifikasi.
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Judul: Pendugaan Prevalensi dan Faktor Risiko Koksidiosis pada Sapi Perah di Kabupaten Bandung
Abstrak: Bovine coccidiosis is one of the most widely distributed parasitic diseases of cattle throughout the world, and its infection of ruminants caused by Eimeria spp. Bandung district has highland areas and cooler climate, so that, in southern part of Bandung district becomes as a dairy farm center area which called Cooperation of South Bandung Dairy Farm (KPBS) Pangalengan. Dairy cattle is one of farming comodity which has high susceptibility to coccidiosis infection due to stress condition and poor sanitation causing great economical losses include reduced milk production. This study was conducted with a cross-sectional study design in dairy cattle of Bandung district from July, 2014 to January, 2015 which aimed to determine the prevalence, species composition, and associated risk factors with coccidiosis. Another aim of the study was to evaluate various factors such as: sex, age of the cattle and type of pen flooring influencing the number of Eimeria oocysts shedding in dairy farm. Samples were obtained from 400 dairy cattle (196, 37 and 167 for aged less than 6 months, 6-12 months and more than 12 months, respectively). Fecal samples were collected, examined and counted for prevalence, species composition and number of oocysts per gram of feces (OPG) to determine for Eimeria by McMaster technique. A questionnaire was completed for individual dairy cattle to record information about animal health and husbandry. OPG counts presented asymmetrical distribution and for this reason, the data were analyzed using a Mann-Whitney test for explanatory variable with 2 categorical factors and a Kruskal-Wallis test for explanatory variable with more than 2 categorical factors followed by Dunn test as a multiple comparison test. Meanwhile, associated factors with risk of Eimeria infection were performed by chi-square test and multivariate logistic regression models. Overall prevalence and mean of oocysts number of Eimeria in cattle was 179 (44.8%; Confidence Interval (CI) 95%: 40.0%-49.6%) and 286.8 opg (oocysts per gram of feces) (CI 95%: 135.7-437.8) respectively, while highest prevalence of Eimeria (67.3%; CI 95%: 60.8-73.9) was observed in calves aged less than 6 months. Ten species of Eimeria were identified in total infected cattle. Among the identified species of Eimeria, E. bovis was found to be highest prevalent species (42.5%), followed in order by E. wyomingensis, E. bukidnonensis, E. pellita, E. auburnensis, E. zuernii, E. cylindrica, E. canadensis, E. brasiliensis and E. alabamensis with prevalence of 39.1%, 32.4%, 26.3%, 19.6%, 17.3%, 3.9%, 3.9%, 3.4% and 1.1% respectively. Sex, age of the cattle and type of pen flooring have significantly effect (P<0.05) with the number of oocysts shed. Younger calves aged less than 6 months shed highest amounts of oocysts than older cattle. Coccidiosis prevalence in cattle aged more than 12 months had lower statistically significant difference (P<0.05) to calves aged less than 6 months and aged 6-12 months. The presence of an immature immune system in younger calves resulting in their higher susceptibility to coccidiosis. Among management and animal health practices, only floor type which had significantly association with the prevalence of Eimeria in cattle.
Keyword: coccidiosis, cross-sectional, dairy cattle, Eimeria, prevalence

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell