Judul: Gross tonage hubungannya dengan tenaga penggerak (hp) pada kapal pukat cincin (purse seine) di kabupaten takalar, provinsi sulawesi selatan:
Abstrak: The waters of Takalar Regency provide a good fishing area for pelagic fish such as kembung, layang, tembang, teri, lemuru, cakalang, and belanak. There are various types of vessels with fishing equipment of different sizes in the area, one of which is purse seiner, a purse seine vessel which dominates the area. The objective of this study is to determine the values of HP and GT of purse seiners in Takalar. An initial step was taken to directly measure several vessels. Measuring the main dimensions was performed to determine the value of GT vessel compared to the value of GT stated in the vessel documents and the data from the listed engine power compared to the actual engine power during operation. The analysis was conducted descriptively, numerically, and comparatively on the purse seiners in Takalar regency based on naval architecture method. The success of a purse seine fishing depends on the speed of setting and the speed of putting nets in circle. The result for a vessel with the biggest IHP of 330 HP and the lowest IHP of 115 HP. Based on those IHP value, a speed of 10.56 knots could be generated for the largest IHP and 2.50 knots for the lowest. The simulation results for 8 vessels show that HP, should be 20 times from the GT value. Since the highest GT value is 20-30 GT, so the IHP value of 400-600 HP.
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Judul: Studi tentang daya penggerak kapal ikan (BHP) dan aspek-aspek teknis terkait
Abstrak: Pembangunan kapal yang digerakkan dengan motor, belum sepenuhnya dipergunakan perhitungan secara ilmu perkapalan untuk menentukan daya penggerak kapal dan besarnya dimensi baling-baling kapal yang dibutuhkan. Sehingga bila ditinjau dari segi efisiensi dan effektivitas pengoperasian kapal yang menyangkut kelaiaklautan belum terpenuhi. Penelitian ini dilakukan pada bulan Juli 1992 berlokasi di Teluk Pelabuhan Ratu, Jawa Barat. Studi kasus dilakukan terhadap kapal-kapal bermotor yang beroperasi di Perairan Teluk Pelabuhan Ratu. Formula dari metode Holtrop Mennen dan M. W. C. Oosterveld Van P. Oossanen (Panjaitan, 1992). Metode Holtrop Mennen dipergunakan untuk menentukan daya penggerak kapal ikan (BHP) yang di- butuhkan. Dan Metode Oosterveld Oossaanen untuk menentukan dimensi baling-baling kapal yang dibutuhkan. Di Teluk Pelabuhan Ratu, kapal payang yang berukuran 5.84 GT mempunyai kisaran panjang 9.30 12.25 m, lebar 2.20 2.98 m, dalam 0.89 1.25 m dan nilai CB 0.38 0.46, dipasang dengan motor tempel berdaya 40 HP yang dilengkapi dengan baling-baling berdiameter 0.30 m. Beroperasi dengan kecepatan 5.0 - 6.0 knot. Kapal gillnet berukuran 4.77 GT dengan kisaran pan- jang 9.96 12.25 m, lebar 1.74 1.20 m dan nilai CB 0.37 2.77 m, dalam 0.68 0.48, dipasang dengan motor tempel berdaya 40 HP, baling-baling berdiameter 0.30 m. Kapal purse seine berukuran 7.61 GT mempunyai kisaran panjang 10.50 11.50 m, lebar 3.30 3.60 m, dalam 1.00 1.20 m dan nilai CB 0.45 0.53, dipasang dengan 2 motor tempel berdaya 40 59 HP yang dilengkapi dengan 2 buah baling-baling berdiameter 0.40 m. Beroperasi dengan kecepatan 5.0 6.5 knot. ...
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Judul: Synthesis of Molybdenum Trioxide (MoO3) by Electrochemical Method for Electrochromics Application
Abstrak: Molybdenum trioxide (MoO3) thin films have been deposited on glass substrates by electrochemical method using ammonium heptamolybdate tetrahydrate ((NH4)6Mo7O244H2O). The films were deposited onto glass substrates as the control temperature at 25○C and annealing treatment at 350○C for 30 mins. The MoO3 thin films were investigated by UV-Vis, X-ray diffraction techniques (XRD), Scanning Electron Microscopy (SEM). The JCPDS card show that orthorhombic MoO3 (α- phase) has been formed. Molybdenum trioxide MoO3 formation was also confirmed by JCPDS card no. 35-0609. The SEM photographs revealed that the spherical and rod-like morphology and their grains size increased with increasing of heating temperatures. The measurement results show that the MoO3 thin film prepared at 350°C transmited about 80% of the visible spectrum. The effect of different heat treatments on surface morphology, thickness and optical properties of the films are discussed in this thesis.
Keyword: Institut Pertanian Bogor, Bogor Agricultural University, IPB, Electrophoretics, electrodeposide, electrochromics, electrochromic materials, electrochromic mechanism