Judul: IPB (Bogor Agricultural University)
Abstrak: Dari penelitian epidemiologi taeniasis yang dilakukan akhir-akhir ini di Asia Tenggara, dilaporkan temuan acing pita Thenia jenis baru. Cacing pita yang menginfeksi manusia itu, berbeda dengan Taenia saginata dan Taenia solium yang telah dikenal. Awalnya disebut Wniu saginatu taiwanensis, karena pertama kali ditemukan pada penduduk di Taiwan. Cacing pita "baru" tersebut, sekatang dinamakan Taenia Asia atau Taenia asiatica. Disebut demikian karena telah ditemukan di beberapa negara Asia. Terminologi ini, masih terus diperdebatkan, mengingat belum seluruh daerah-daerah endemis taeniasis dan sistiserkosis di Asia, diteliti terhadap kemungkinan adanya cacing pita tersebut. Penelitian yang bertujuan untuk melacak kehadiran cacing pita Taenia saginata taiwanensis dan sistiserkusnya di Bali, telah dikerjakan selama 19 bulan, dari bulan Juni 1993 sampai Januari 1995.
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Judul: IPB (Bogor Agricultural University)
Abstrak: Cacing tanah E. foetida merupakan salah satu spesies yang mempunyai habitat asli pada limbah organik terutama feses ternak. Masatah utama yang dihadapi alam budidaya cacing tanah E. foetida adalah teknologi budidaya yang diterapkan oleh peternak belum sesuai dengan persyaratan kehidupannya, sehingga produktivitasnya rendah. Hal ini disebabkan karena cacing tanah termasuk hewan poikilotermik yang kehidupannya sangat dipengaruhi oleh &ktor-faktor lingkungan. Di antara faktor-faktor lingkungan yang berpengaruh adalah ketersediaan pakan, pH, suhu, kelembaban, aerasi media, cahaya, kepadatan populasi dan predator.
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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