Judul: Karakteristik dan Keberlanjutan Perikanan Jaring Kekop (Gillnet) di Danau Ranau, Sumatera Selatan
Abstrak: Kegiatan penangkapan ikan hampal menggunakan jaring insang di Danau Ranau sudah tergolong intensif. Namun demikian terdapat jenis alat tangkap yang dikembangkan oleh nelayan untuk menangkap ikan hampal di perairan yang sama, yaitu “jaring kekop”. Keberadaan alat tangkap ini akan meningkatkan intensitas penangkapan ikan hampal di Danau Ranau yang sudah tinggi, sehingga memengaruhi ketersediaan stoknya. Penelitian ini bertujuan untuk mendeskripsikan karakteristik perikanan jaring kekop dan menganalisis aspek keberlanjutan perikanan jaring kekop yang digunakan untuk menangkap ikan hampal di Danau Ranau, Sumatera Selatan. Pengumpulan data dilakukan dengan survei langsung di lapangan melalui wawancara dengan nelayan, melakukan observasi dan pengukuran parameter unit penangkapan ikan serta mengikuti trip penangkapan. Hasil penelitian menunjukkan bahwa jaring kekop yang digunakan nelayan di Danau Ranau dapat digolongkan ke dalam kelompok jaring insang tetap (set gillnet) dengan metode operasi yang sedikit berbeda. Nilai keberlanjutan perikanan jaring kekop untuk aspek teknis adalah 51,4, aspek biologi 6,5, dan aspek sosial-ekonomi 65,2. Perlu adanya pengelolaan perikanan tangkap yang ramah lingkungan di Danau Ranau dan penelitian lebih lanjut mengenai efektivitas penangkapan ikan hampal menggunakan jaring kekop pada musim yang berbeda.
Keyword: characteristic, kekop net, sustainability

Judul: Pengukuran Ketergantungan Nelayan Jaring Rampus Terhadap Kegiatan Pemanfaatan Sumberdaya Ikan di Muara Angke Jakarta Utara.
Abstrak: Ketergantungan nelayan terhadap sumberdaya ikan merupakan salah satu karakteristik upaya dalam memanfaatkan sumberdaya perikanan yang bisa meningkatkan kesejahteraan nelayan. Ketergantungan nelayan jaring rampus terhadap sumberdaya ikan di Muara Angke sangat tinggi. Oleh sebab itu, perlu perhatian pemerintah dan stakehoder lainnya dalam pemberdayaan nelayan jaring rampus. Penelitian ini bertujuan 1) mendeskripsikan keragaan unit perikanan jaring rampus, 2) mengukur ketergantungan nelayan jaring rampus terhadap sumberdaya ikan di Muara Angke. Metode penelitian yang digunakan adalah metode survei dan wawancara secara langsung kepada nelayan. Penentuan sampel menggunakan purposive sampling dengan sampel sebanyak 30 responden. Analisis data yang digunakan adalah deskriptif dan skala Likert untuk mengukur ketergantungan nelayan. Hasil penelitian menunjukkan bahwa nelayan jaring rampus yang ada di Muara Angke Jakarta Utara masih memiliki unit perikanan skala kecil dilihat dari armada penangkapan ikan rata-rata 3 GT dan ukuran mata jaring rampus yang bervariasi, dimana ukuran yang didominasi digunakan oleh nelayan adalah 1,75 inch dengan rata-rata panjang 14 piece. Ketergantungan nelayan jaring rampus terhadap sumberdaya ikan dari keempat kriteria diantaranya, biologi, ekonomi, sosial, dan teknologi maka dilihat dari nilai ratarata skor total tertinggi yaitu pada kriteria biologi sebesar 4,71, sedangkan untuk masing-masing kriteria lainnya berturut-turut sebesar ekonomi 3,87, sosial 4,13, dan teknologi 1,85.
Keyword: aring rampus, ketergantungan Nelayan, Muara Angke, Jakarta Utara

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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