Judul: Analisa Variasi Karakter Morfometrik dan Meristik Kepiting Bakau (Scylla spp.) di Perairan Indonesia.
Abstrak: Indonesia memiliki sebuah garis hipotesis yang memisahkan wilayah geografi hewan Asia dan Australasia yang ditemukan oleh Alfred Russel Wallace yang bernama garis Wallace. Garis Wallace ditarik melalui kepulauan Melayu (di antara Kalimantan dan Sulawesi) serta di antara Bali dan Lombok. Keanekaragaman jenis hewan di bagian barat dari garis Wallace berhubungan dengan spesies Asia sedangkan di bagian timur berhubungan dengan spesies Australia. Oleh karena itu terdapat perbedaan karakteristik jenis hewan yang berada di wilayah barat dan timur Indonesia. Perbedaan karakteristik tersebut lebih terfokus pada fauna terestrial sedangkan perbedaan karakteristik pada fauna air belum banyak diketahui, salah satunya adalah kepiting bakau.
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Judul: Karakteristik Habitat dan Kaitannya dengan Keberadaan Tiga Jenis Kepiting Bakau (Scylla olivacea, S. tranquebarica, dan S. serrata) di Perairan Karang Anyar, Segara Anakan, Cilacap Jawa Tengah
Abstrak: Penelitian ini bertujuan untuk mengetahui karakteristik masing-masing habitat kepiting bakau dan hubungannya dengan distribusi kepiting bakau berdasarkan jenis dan ukuran. Penelitian dilaksanaltan di perairan dan di daiam hutan mangrove Karang Anyar, Segara Anakan. Pengambilan data dilakukan setiap hari dari tanggal 1 September 2001 sampai dengan tanggal 31 Desember 2001. Kondisi parameter kualitas air pada lokasi pengambilan sampel secara umum berbeda antar stasiun dan bulan, kecuali untuk parameter suhu tidak berbeda antar stasiun, dan kedalaman perairan tidak berbeda antar bulan. Untuk tekstur substrat terdiri dari lumpur, fiat, dan pasir, dengan kandungan yang dominan lumpur.
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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