Judul: Kajian hispatologis trakhea ayam buras akibat infeksi campuran virus newcastle disease dan cacing Ascaridia galli
Abstrak: Penelitian ini dilakukan untuk mengetahui gambaran histopatologi trakhea ayam buras yang diinfeksi virus Newcastle Disease (ND) terinfeksi Ascaridia galli. 200 ekor ayam buras dikelompokan secara acak menjadi empat kelompok perlakuan yaitu kelompok A (kontrol/tanpa perlakuan), kelompok B (vaksin ND, tanpa infeksi cacing), kelompok C (vaksin ND, infeksi telur cacing dosis 200), kelompok D (vaksin ND, infeksi telur cacing dosis 2000).
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Judul: Gambaran sel radang dan lesio pada usus ayam buras akibat infeksi campuran virus newcastle disease dan cacing Ascaridia galli
Abstrak: Penelitian ini bertujuan untuk mengkaji gambaran sel radang dan lesio ayam buras akibat infeksi campuran oleh virus Newcastle Disease dan cacing Ascaridia galli. Penelitian ini menggunakan 100 ekor DOC ayam buras yang dibagi menjadi 4 kelompok (A,B,C, dan D). Kelompok A (kontrol) hanya diuji tantang dengan virus ND, Kelompok B Divaksinasi ND dan diuji tantang dengan virus ND, kelompok C dan D diberi infeksi tambahan berupa cacing Ascaridia galli dengan dosis rendah (200/ekor) dan tinggi (2000/ekor), divaksinasi ND dan diuji tantang dengan virus ND. Hasil penelitian menunjukan pada pengamatan seminggu setelah infeksi virus ND pada ayam dengan infeksi cacing Ascaridia galli dosis 2000/ekor mengalami pelepasan sel radang yang lebih sedikit dibandingkan dengan kelompok yang terinfeksi ND tanpa infeksi cacing dan diinfeksi cacing dosis 200/ekor. Pada pengamatan seminggu setelah infeksi virus ND pada kelompok ayam yang divaksinasi,baik terinfeksi cacing dosis rendah maupun tidak diinfeksi cacing rataan jumlah limfoblasnya meningkat. Infeksi campuran cacing Ascaridia galli dan virus Newcastle Disease tidak meningkatkan lesio pada usus, yang berupa hiperemi, edema, pendarahan, infiltrasi sel radang, proliferasi sel goblet dan deskuamasi epitel.
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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