Judul: Analisis usaha perikanan alat penggaruk kerang "Dredge gear" dan kemungkinan pengembangannya di Kecamatan Tanjung Balai Kabupaten Asahan Sumatera Utara
Abstrak: Usaha perikanan alat penggaruk kerang "Dredge Gear" merupakan suatu uit bisnis, sehingga sebelum diambil keputusan untuk mengembangkan usaha dikaji dulu bagaimana kelayakan usaha tersebut. Dalam rangka pengembangan usaha di masa akan datang perlu dilakukan analisis usaha dan analisis kelayakan usaha. Analisis usaha dilakukan untuk mengetahui keuntungan dari usaha pengumpulan kerang melalui analisis keuntungan usaha, analisis imbangan Penerimaan dan biaya (R/C) dan analisis Break Event Point (BEP). Analisis kriteria investasi dilakukan dengan melakukan penilaian terhadap NPV, Net B/C dan IRR. Penelitian ini bertujuan untuk mengetahui analisis keuntungan yang diperoleh dan usaha perikanan alat penggaruk kerang "Dredge Gear" dan mengetahui analisis kelayakan secara finansial serta pengembangan usaha perikanan alat penggaruk karang dari alat penggaruk kerang berupa "Tojok" ke "Tank Thailand. Berdasarkan analisis kriteria investasi didapat nilai NPV tanpa pembiayaan sebesar Rp 53.746.323.26 dan dengan pembiayaan sebesar Rp 80.430.079,97, Net B/C tanpa pembiayaan sebesar 1.31 dan dengan pembiayaan sebesar 1,81 serta IRR tanpa pembiayaan sebesar 41,11 % dan dengan pembiayaan sebesar 69,40 %- Berdasarkan perhitungan tanpa dan dengan pembiayaan menunjukkan NPV > 0, Net B/C 1 dan IRR> discount rate maka usaha perikanan alat penggaruk kerang "Dredge Gear" layak untuk dikembangkan.
Keyword: Dredge Gear, business analysis, business feasibility analysis

Judul: Efisiensi Teknis dan Ekonomis Alat Tangkap Garuk dan Peluang Pengembangannya di Desa Rawameneng Blanakan Subang Jawa Barat
Abstrak: Dredge gear is the most common fishing gear in Rawameneng Blanakan Village. This fishing gear have good productivity for catching coockles. Productivity of dredge gear is related to the ability of fishing gear to provide the profit for fishermen. The objectives of this research were to determine technical and economical efficiency of dredge gear and to determine the possibility to developed dredge gear in Rawameneng Village. Productivity of dredge gear was technically analiyzed and economically. The research showed that technical efficiency of dredge gear in Rawameneng village ranged from 0,22 to 6,41. In term of economical efficiency, dredge gear contributed the revenue which ranged from Rp 39.790.000 to Rp 108.468.000. Furthermore, Return of Investment of dredge gear, Revenue-Cost Ratio and Payback Period were 299%, 4,36 and 0,33, respectively.
Keyword: coockles Rawameneng Village., dredge gear, economical efficiency, Technical efficiency

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