Judul: Keanekaragaman genetik ikan betok (Anabas testudineus Bloch) pada tiga tipe ekosistem perairan rawa di Provinsi Kalimantan Selatan
Abstrak: Luas lahan basah potensial di Indonesia mencapai ± 40,5 juta hektar terbagi di lima kepulauan yaitu Kalimantan, Sumatra, Sulawesi, Papua dan Jawa. Salah satu jenis ekosistem perairan lahan basah yang cukup luas berada di kepulauan Kalimantan adalah perairan rawa yang luasnya mencapai ± 12 juta hektar. Secara khusus luas perairan rawa yang ada di Kalimantan Selatan mencapai ±1 juta hektar. Perairan rawa tersebar diseluruh Kabupaten yang ada di Kalimantan Selatan yang dapat dikelompokkan menjadi perairan rawa monoton (452.704 ha), rawa tadah hujan (169.094 ha) dan rawa pasang surut.
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Judul: Kajian kebiasaan makanan dan kaitannya dengan aspek reproduksi ikan betok (Anabas testudineus Bloch) pada habitat yang berbeda di lingkungan Danau Melintang Kutai Kartanegara Kalimantan Timur
Abstrak: Lingkungan Danau Melintang terdiri dari beberapa tipe habitat seperti rawa, sungai dan danau. Ikan betok merupakan salah satu jenis ikan yang ditemukan di tiga habitat tersebut di atas, Ikan ini mempunyai nilai ekonomis tinggi dan disukai di Kalimantan. Saat ini populasi ikan betok diduga mengalami penurunan akibat tingginya usaha penangkapan. Melihat adanya berbagai tekanan terhadap populasi ikan betok di atas, dikhawatirkan pada masa yang akan datang keberadaan ikan betok di lingkungan Danau Melintang akan terancam. Oleh sebab itu jenis ikan ini perlu dilestarikan keberadaannya dengan cara mendapatkan informasi data tentang aspek biologinya.
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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