Judul: Populasi dan Pemanfaatan Katak Limnonectes grunniens di Pulau Buton, Sulawesi Tenggara
Abstrak: Katak mempunyai peranan yang penting secara ekologi maupun ekonomi. Secara ekologi katak merupakan komponen dalam rantai makanan. Katak memiliki nilai ekonomi sebagai komoditas perdagangan. Indonesia merupakan salah satu negara pengekspor paha katak ke benua Eropa, Amerika, dan Asia. Salah satu jenis katak yang masuk dalam kuota ekspor adalah Limnonectes grunniens. Jenis tersebut dilaporkan mengalami penurunan populasi di alam, terutama karena degradasi habitat dan konsumsi yang dilakukan manusia. Hutan Lambusango yang terletak di Pulau Buton, Sulawesi Tenggara merupakan habitat bagi katak L. grunniens. Namun jumlah populasi, ekologi, biologi, dan pola pemanfaatan katak tersebut belum diketahui. Penelitian bertujuan untuk mengidentifikasi karakteristik dan kondisi habitat, menganalisa karakteristik morfologi dan mengestimasi populasi, menganalisa perilaku yang meliputi strategi aktivitas dan tingkat kewaspadaan terhadap predator, menganalisa pola pemanfaatan katak L. grunniens oleh masyarakat yang tinggal di sekitar kawasan Hutan Lambusango, Pulau Buton, Sulawesi Tenggara
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Judul: Kajian Etnobotani Suku Buton (Kasus Masyarakat Sekitar Hutan Lambusango, Kabupaten Buton, Provinsi Sulawesi Tenggara)
Abstrak: Hutan Lambusango merupakan salah satu ekosistem hutan hujan dataran rendah yang terdapat di Pulau Buton. Hutan Lambusango merupakan satu kesatuan ekosistem hutan yang terdiri dari Suaka Margasatwa Lambusango (27.700 ha), Cagar Alam Kakinauwe (810 ha) yang di sekitarnya terdapat hutan produksi (35.000 ha). Masyarakat suku Buton di sekitar hutan Lambusango memiliki kearifan tradisional dalam memanfaatkan tumbuhan untuk kehidupan sehari-hari serta memiliki peran serta dalam kegiatan konservasi tumbuhan berguna.
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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