Judul: Keragaan Perikanan Pancing Ulur (Hand line) di PPP Karimunjawa, Jawa Tengah.
Abstrak: Pelabuhan Perikanan Pantai (PPP) Karimunjawa merupakan salah satu tempat pendaratan hasil perikanan tangkap yang terdapat di Jawa Tengah. Alat tangkap yang umumnya digunakan nelayan di PPP Karimunjawa adalah pancing ulur. Tujuan penelitian ini yaitu mendeskripsikan aspek teknis dan ekonomi terkait perikanan pancing ulur di PPP Karimunjawa. Metode penelitian yang digunakan berupa survei dengan menganalisis secara deskriptif tiap aspek tersebut. Secara teknis, kapal pancing ulur yang digunakan nelayan di PPP Karimunjawa berukuran <5 GT dan beroperasi di sepanjang Taman Nasional Karimunjawa yaitu Karang Kapal, Pulau Nyamuk, Pulau Karakal Kecil, Pulau Gleang, Pulau Burung, Pulau Menjangan Besar, Pulau Menyawakan dan Pulau Genting yang terdiri dari 2-3 orang disetiap kapal. Secara sosial, usaha perikanan pancing ulur di PPP Karimunjawa menerapkan sistem bagi hasil yaitu sistem 1:5 untuk 3 nelayan dan 1:4 untuk 2 nelayan dalam satu kapal dengan syarat telah dikurangi biaya operasional melaut. Pendapatan nelayan pemilik selama satu bulan sekitar 5 172 900 dan ABK 1 724 300. Secara ekonomi, usaha perikanan pancing ulur di PPP Karimunjawa memperoleh keuntungan yang besar dan memiliki prospek investasi yang baik.
Keyword: kapal, Karimunjawa, metode survei, nelayan, pancing ulur

Judul: Studi pendahuluan tentang operasional pelabuhan perikanan pantai karimunjawa kab. Jepara Jawa Tengah
Abstrak: Tujuan penelitian adalah: (1) Mempelajari peranan Pelabuhan Perikanan Pantai (PPP) Karimunjawa terhadap perkembangan sektor perikanan, (2) Mempelajari keadan PPP Karimunjawa beserta fasilitas-fasilitasnya, (3) Mempelajari kemungkinan pengembangannya untuk masa akan datang. Penelitian ini dilakukan di PPP Karimunjawa, Kabupaten Jepara, Jawa Tengah. Waktu penelitian berlangsung sejak bulan Agustus sampai Oktober 1989. Metoda yang dipakai dalam penelitian adalah studi kasus, dimana dalam tulisan ini akan diutarakan bentuk- bentuk masalah yang ada dan dicari usaha pemecahannya. Potensi perikanan laut di Karimunjawa diperkirakan masih sangat besar. Dengan luas territorial 78,66 km², terdapat potensi lestari sebesar 28.000 ton per tahun. Tingkat pemanfaatannya masih rendah, yaitu baru sebesar 6,96 %. Alat tangkap yang terdapat di Karimunjawa adalah payang, jaring krikit, jaring monofilamen dan multifilamen, pancing tonda dan branjang. Pancing tonda dan branjang merupakan alat tangkap yang dominan digunakan nelayan Karimunjwa dan berperan dalam produksi ikan di PPP tersebut. ...
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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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