Judul: Aspek Biologi Pertumbuban, Kebiasaan Makanan dan Reproduksi Beberapa Jenis Ikan di Perairan Sekitar Butan Lindung Angke Kapuk, Jakarta Utara
Abstrak: Rutan Lindung Muara Angke merupakan daerah rawa mangrove yang berhubungan dengan daerah pesisir Utara Jawa di Muara Kapuk, Jakarta Utara. Daerah ini merupakan daerah yang mempunyai tekanan ekologis tinggi. Dilihat dari segi ekologis, biologis dan ekonomisnya, mangrove berfungsi sbbagai peredam gelombang dan angin badai, pelindung dari abrasi, penahan lumput dan perangkap sedimen, daerah asuhan , tempat mencari makanan, dan daerah pemijahan, serta sebagai pemasok larva berbagai jenis ikan, udang, dan biota laui lainnya. Data tentang aspek biologi ikan yaitu kebiasaan makanan dan reprod4ksi serta faktor Iingkungan yang mempengaruhinya dapat membantu rencana pengelolaan kegiatan perikanan dan usaha konservasi hayati di Rutan Lindung Angke Kepuk. Penelitian ini diharapkan dapat memberikan informasi tentang potensi ikan yang mungkin dikembangkan di perairan sekitar Rutan Lindung dengan menjaga kelestariannya
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Judul: Biodiversitas, Karakter Morfologis dan Aspek Reproduksi Jenis Ikan Khas Perairan Mangrove di Suaka Margasatwa Muara Angke, Penjaringan Jakarta Utara
Abstrak: The research was conducted in Muara Angke Wildlife Conservation, Penjaringan, North Jakarta. The aim of this study was to determine fish diversity in mangrove ecosystem, morphological character, and reproduction aspect (P. schlosseri, A. Gymnocephalus, and L. subviridis). Furthermore, those were compared with the same fish species in Ujung Kulon National Park. The result showed that there were 32 spesies belongs to 29 genera and 24 families were found in Muara Angke Wildlife Conservation. Based on PCA analysis, P. schlosseri has variance that can be explained 45.5%, L. subviridis 59.8%, and A. gymnocephalus 64.5%. The highest fluctuating asymmetry character is located in gill rakers. P. schlosseri supposedly better able to adapt to the pattern in the SMMA positive allometric growth (b> 3). Fecundity of this three species is vary and depend on environmental factors.
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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