Judul: Suatu Penelitian Tentang Pengaruh Kekuatan Mesin (HP) terhadap Keuntungan (%) Hasil Eksploitasi Double RIG Shrimp Trawler di Perairan Kalimantan Selatan dan Kalimantan Timur
Abstrak: Penelitian ini dilakukan terhadap double rig shrimp trawler milik PT Lisaya Mitra yang beroperasi di perairan yang terletak antara 01 derajat 00;25 LS-04 derajat 00'25 LS dan 116 derajat 00'BT-118 derajat 11'BT di perairan Kalimantan Selatan dan Kalimantan Timur. Penelitian ini bertujuan untuk mengetahui jenis ukuran (EF/GT) double rig Shrimp trawler yang paling sesuai dioperasikan di perairan Kalimantan Selatan dan Kalimantan Timur ditinjau dari segi ekonomi.
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Judul: Studi tentang pengaruh perbedaan shortening pada Inner Net dari Trammel Net terhadap hasil tangkapan di Labuan, Kabupaten Pandeglang, Jawa Barat
Abstrak: Penelitian ini dilakukan di perairan Labuan, Kabupaten Daerah Tingkat II Pandeglang, Jawa Barat pada pertengahan bulan April hingga pertengahan bulan Mei 1993. Tujuan penelitian ini adalah untuk menganalisa penga- ruh perbedaan nilai shortening pada bagian inner net dari trammel net terhadap hasil tangkapan. Selain itu juga dilakukan analisa usaha penangkapan udang dengan menggunakan alat trammel net yang dilakukan oleh nelayan trammel net di daerah Labuan guna mendapatkan gambaran umum tentang usaha perikanan trammel net di Labuan, Kabupaten Pandeglang. Trammel net yang digunakan adalah sebanyak sembilan piece dengan nilai shortening yang digunakan sebesar 57,40 %, 67,38% dan 77,39 % dengan jumlah masing-masing sebanyak tiga piece dimana dalam pengoperasiannya dipasang secara berselang-seling. Hasil tangkapan yang dominan adalah udang jerbung (Penaeus merguiensis de Man), yang meliputi 35,07% dari jumlah total hasil tangkapan. Hasil tangkapan sampingan yang dominan adalah ikan klotok (Otolithes ruber) dan ikan ..dst
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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