Judul: Model fungsi produksi unit penangkapan bubu keong macan, Babylonia spirata L. di Karang Serang, Tangerang, Propinsi Banten
Abstrak: Karang Serang merupakan salah satu desa di Kecamatan Sukadiri, Kabupaten Tangerang. Salah satu hasil tangkapan utama para nelayan dalam beberapa tahun terakhir di lokasi ini adalah keong macan. Keong macan merupakan gastropoda yang mempunyai nilai ekonomis tinggi. Dalam upaya mengoptimumkan usaha penangkapan bubu keong macan di Karang Serang, perlu mengetahui hubungan faktor-faktor produksi alat tangkap ini terhadap produksinya. Penelitian ini bertujuan untuk mengidentifikasikan faktor-faktor produksi yang berperan dan hubungannya terhadap produksi pada unit penangkapan bubu keong macan di Karang Serang, membuat model fungsi produksi unit penangkapan bubu keong macan di Karang Serang, mengidentifikasi keragaan analisis usaha pada unit penangkapan bubu keong macan di Karang Serang.
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Judul: Produksi Bubu Keong Macan Bedasarkan Lama Perendaman Di Karang Serang, Kabupaten Tangerang
Abstrak: Keong macan (Babylonia spirata) merupakan komoditas perikanan bernilai ekonomis penting. Keong macan sangat digemari karena memiliki kandungan protein yang sangat tinggi, rasanya enak, kandungan ledirnya sedikit dan mudah pengolahannya.
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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