Judul: Karakteristik Populasi Panenan (Amyda cartilaginea) di Kabupaten Sambas dan Kabupaten Ketapang Kalimantan Barat
Abstrak: Indonesia merupakan salah satu negara penghasil labi-labi (Amyda cartilaginea) di dunia. Penangkapan labi-labi di Indonesia dilakukan untuk memenuhi kebutuhan dalam negeri (konsumsi dan pet) dan untuk ekspor (Mardiastuti & Soehartono 2003). Di Indonesia status konservasi labi-labi belum dilindungi undang-undang, tetapi secara Internasional, spesies tersebut masuk ke dalam Appendix II CITES (CITES 2010) dan dikategorikan vulnerable (rentan) pada Red Data Book IUCN (IUCN 2010). Lokasi tangkapan labi-labi dari alam yang utama adalah di Kalimantan dan Sumatera. Kalimantan Barat merupakan salah satu daerah pemasok labi-labi, pada tiga tahun terakhir (2007 – 2009) mendapat kuota yang cukup tinggi yaitu 4.000 ekor setelah Sumatera Utara (rata-rata 9.250 ekor) dan Kalimantan Timur sebanyak 5.000 ekor pertahun (Ditjen PHKA 2007; 2008; dan 2009). Di Kalimantan Barat, berdasarkan informasi dari pengumpul besar yang merangkap eksportir diketahui bahwa dua lokasi yang merupakan kantong tangkapan labi-labi adalah Kabupaten Ketapang dan Kabupaten Sambas. Penelitian ini dilakukan karena saat ini tingkat penangkapan labi-labi dari alam cukup tinggi, sementara data dan informasi tentang kondisi populasi di alam masih sangat terbatas. Lokasi penelitian adalah di Kabupaten Sambas dan Kabupaten Ketapang untuk tingkat pemancing dan pengumpul, dan di Pontianak untuk tingkat eksportir. Pengambilan data dilakukan ± 2 bulan yaitu dari bulan Maret 2010 sampai dengan bulan April 2010. Tujuannya adalah untuk (1) mengetahui parameter demografi (seks rasio, mortalitas dan kelas umur) populasi panenan di tingkat pemancing, pengumpul dan eksportir (2) mengetahui parameter morfometri populasi panenan (3) menduga populasi alami di lokasi-lokasi tangkapan dan (4) fluktuasi tangkapan per periode tangkap.
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Judul: Tata Niaga, Parameter Demografi Populasi Panenan dan Karakteristik Habitat Labi-labi Amyda cartilaginea (Boddaert 1770) di Provinsi Jambi.
Abstrak: Asian soft-shell turtle (Amyda cartilaginea Boddaert, 1770) has been recorded as the most harvested turtle species in Indonesia, mainly for consumption purpose in oriental countries. In order to prevent over-exploitation and the declining of the population, harvesting has been limited by quota. In practice, the harvesting still showed an enormous number and the determination of the quota itself was not yet based on the data of Amyda population. This research was aimed to identify mortality rate through identification of the trading system since for highly-valued species harvesting was the major cause of mortality. The demographyc and morphometric parameters were measured to characterize the harvested population by its size, sex ratio, age-class and range of bodymass and carapace length. Twenty dissected speciments were observed to study the reproduction condition of different size of Amyda, thus used to estimate potential lost caused by harvesting. Amyda’s habitat was characterized by measuring 9 biophysical variables of each of 90 fishing plots in 16 rivers and 3 lakes. The result showed that the size of harvested population of Amyda at the trader level was different from one to another, but showed similar trends of domination in sex and age class which were adult females and reaching the number of 58.28%. The people dealing with the harvesting activities of Amyda had no preference for size and sex of the harvested animal. Reproduction condition of the observed Amyda showed that at the size of five kilograms, the females were at the age of maturity. Kolmogorov-Smirnov test on the habitat biophysical variable on stream showed that Amyda had no habitat preference.
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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