Judul: Postur Kerja pada Perikanan Purse Seine.
Abstrak: Kegiatan penangkapan ikan melibatkan kapal perikanan, alat tangkap dan nelayan. Aktivitas penangkapan ikan dengan kapal purse seine di Rembang dilakukan secara manual sehingga dapat menyebabkan gangguan musculoskeletal. Tujuan penelitian ini yaitu mengidentifikasi kondisi postur kerja nelayan saat melakukan penangkapan ikan dengan alat tangkap purse seine, mengidentifikasi kondisi yang tergolong membahayakan bagi otot dan gangguan musculoskeletal yang dirasakan setelah melakukan aktivitas penangkapan. Data yang digunakan berupa sikap tubuh saat melakukan aktivitas penangkapan ikan yang diperoleh melalui observasi lapang. Data keluhan otot yang dirasakan setelah melakukan aktivitas penangkapan ikan diperoleh dari wawancara terhadap nelayan purse seine sebanyak 100 responden. Data sikap tubuh diolah menggunakan metode Ovako Working Posture Analysis System (OWAS) merupakan metode untuk menganalisa postur kerja yang dapat menyebabkan keluhan otot, meliputi pergerakan tubuh bagian punggung, bahu, tangan dan kaki, termasuk paha, lutut dan pergelangan kaki. Nordic body map merupakan metode untuk mengetahui keluhan otot yang dirasakan pada bagian tubuh dan job safety analysis merupakan metode untuk mengidentifikasi bahaya dan mengevaluasi dari potensi kecelakaan yang dihasilkan terhadap suatu pekerjaan. Hasil penilitian menunjukan bahwa aktivitas penangkapan ikan melibatkan sikap kerja berdiri yaitu pada aktivitas perbekalan, setting, hauling, pemasangan rumpon, bongkar muat dan sikap kerja duduk pada aktivitas sortir ikan dan perbaikan jaring. Aktivitas yang tergolong membahayakan adalah dengan mengangkat beban dalam kondisi ketika mengangkat beban melebihi bahu seperti aktivitas perbekalan dan bongkar muat. Bagian atas tubuh yang paling banyak merasakan sakit adalah lengan atas kanan dan kiri, bagian tengah adalah punggung dan bagian bawah adalah betis kiri dan kanan.
Keyword: Aktivitas penangkapan ikan, Postur kerja, OWAS, Nordic body map Job safety analysis

Judul: Work Posture for Tuna Unloading Activities at Pelabuhan Perikanan Samudera Nizam Zachman Jakarta
Abstrak: Tingginya produksi ikan tuna di PPS Nizam Zachman Jakarta menyebabkan lama waktu bekerja dan beban kerja meningkat pada aktivitas bongkarnya. Aktivitas bongkar ikan tuna dilakukan secara manual dan melibatkan lebih dari 10 orang pekerja. Rata-rata pekerja bongkar ikan tuna dalam sehari mengalami satu kali kecelakaan kerja dan memiliki keluhan rasa sakit dibagian tubuh akibat sikap kerja (postur kerja) yang tidak ergonomis. Tujuan penelitian ini adalah mengidentifikasi postur kerja pada aktivitas bongkar ikan tuna dan risiko yang mungkin ditimbulkan serta mengidentifikasi keluhan-keluhan rasa sakit yang muncul akibat aktivitas bongkar ikan tuna di PPS Nizam Zachman Jakarta. Metode yang digunakan dalam penelitian ini adalah Rapid Entire Body Assessment (REBA) dan kuesioner Nordic Body Map. Hasil penelitian berdasarkan penilaian menggunakan metode REBA pada delapan tahapan aktivitas bongkar ikan tuna diperoleh level risiko tinggi sebesar 62,5%, yaitu tahapan dimana terdapat postur janggal dengan mengangkat beban berat. Adapun mayoritas dari 85 pekerja bongkar ikan tuna mengalami tingkat keluhan pertama dibagian punggung sebesar 94% dan pinggang sebesar 85%, hal tersebut merupakan bentuk cidera pada sistem muskuloskeletal yang diakibatkan oleh postur janggal. Rekomendasi postur kerja yang bisa diberikan untuk mengurangi risiko cedera dan mencegah terjadinya kecelakaan kerja yaitu menggunakan teknik mengangkat barang secara diagonal (diagonal lift)., The high production of tuna at PPS Nizam Zachman Jakarta increases working time and workload in unloading activities. Tuna unloading activities are manual and involve more than 10 workers. On an average day, tuna unloading workers suffer an accident at work and complain of pain in the body caused by non-ergonomic working posture. The purpose of this study is to identify work postures in tuna unloading activities and the risks that may arise and identify pain complaints that arise because of tuna unloading activities at PPS Nizam Zachman Jakarta. The method used in this study is the Rapid Entire Body Assessment (REBA) and the Nordic Body Map questionnaire. Based on an assessment using the REBA method in the eight stages of the tuna unloading activity has a high-risk level of 62,5%, namely stages where there was an awkward posture while lifting heavy loads. Most of the 85 tuna unloading workers experienced a first complaint rate of 94% on the back and 85% on the waist, which is a form of musculoskeletal injury due to awkward posture. Recommendations for work postures that can be given to reduce the risk of injury and prevent work accidents use the diagonal lift technique.
Keyword: Nordic Body Map, REBA, tuna unloading activity, work posture

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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