Judul: Kajian Pengelolaan Kawasan Budidaya Perikanan di Pulau Sugi Kabupaten Karimun Provinsi Kepulauan Riau.
Abstrak: The goal of this study is to give a directive in management of integrated and sustainable marine culture, to increase sociaty properity by using land appropiation analysis for marine culture : shrimp farming, seaweed farming and groupers farming, finansial analysis and labor recruitment in Sugi Island, Karimun Region of Riau Island Province.
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Judul: Kajian Budidaya Ikan Karang Dengan Sistem Sea Ranching Dalam Memdukung Wisata Bahari (Studi Kasus Di Kawasan Pesisir Gili Indah, Lombok - Nusa Tenggara Barat
Abstrak: Penelitian ini bertujuan untuk: 1) mendiskripsikan kondisi terumbu karang dan ikan karang yang berasosiasi di dalamnya, 2) menganalisis kesesuaian lingkungan perairan akan mempengaruhi keberhasilan penerapan sea ranching, 3) menentukan jenis ikan karang yang akan ditebar sebagai rekomendasi dimasa mendatang, 4) membuat strategi pengembangan budidaya ikan karang dengan sistem sea ranching untuk mendukung pariwisata bahari. Penelitian ini menggunakan metode Line Intercept Transect (LIT) dan sensus visual bawah air (underwater visual census) untuk menilai tutupan karang dan pengamatan terhadap ikan karang sebagai data awal. Analisis spasial dilakukan untuk menganalisis kesesuaian lingkungan perairan dengan bantuan perangkat Sistem Informasi Geografis (SIG). Pemilihan komoditas ikan karang dilakukan dengan metode Analytical Hierarchy Process (AHP), sedangkan pembuatan strategi pengembangan budidaya ikan karang dengan sistem sea ranching dengan menggunakan metode SWOT. Berdasarkan hasil penelitian diperoleh rata-rata penutupan karang hidup di ketiga pulau termasuk dalam kategori buruk sampai sedang. Dari analisis spasial diperoleh total luasan perairan, yang termasuk kategori kelas Sangat Sesuai sekitar 165.6 ha, dan kriteria Sesuai dengan luasan 1222,9 ha yang terdistribusi pada daerah pesisir pulau yang dikelilingi oleh terumbu karang, sedangkan untuk kriteria kelas Tidak Sesuai sebesar 954,9 ha. Komoditas budidaya yang paling sesuai untuk dikembangkan budidaya sistem sea ranching adalah ikan kerapu. Dalam upaya pengembangan sea ranching dapat berjalan dengan baik maka diperlukan strategi yang terdiri dari (1) menciptakan usaha yang ramah lingkungan, (2) rehabiltasi karang dengan artificial reef dan restocking (pengkayaan stok) (3) Peningkatan kualitas sumberdaya manusia, (4) memfungsikan pengaturan tata ruang laut, (5) meningkatkan kapasitas kelembagaan (6) pemberdayaan masyarakat (7) pengembangan pola kemitraan (co-manajement). Kata kunci : Sea ranching,
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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