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Jurnal Airaha
Published by Politeknik Kelautan dan Perikanan Sorong
ISSN : 23017163     EISSN : 26219638     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Electrical & Electronics Engineering
Jurnal Airaha terbit 2 (dua) kali setahun (Juni, dan Desember) dengan Nomor ISSN 2301-7163 (media cetak) dan Nomor E-ISSN 2621-9638 (media online). Jurnal Airaha memuat artikel hasil penelitian dan kupasan (review) orisinal Jurnal Penelitian yang Berkaitan dengan Disiplin Ilmu Bidang Teknologi Penangkapan Ikan, Permesinan Perikanan, Budidaya Perikanan, Pengelolaan Sumber Daya Pesisir dan Pengolahan Perikanan, Wisata Bahari, Pengolahan dan Penyimpanan Hasil Tangkapan.
Arjuna Subject : -
Articles 71 Documents
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Laju Eksploitasi Sumberdaya Ikan Layang (Decapterus macrosoma) yang didaratkan di Pangkalan Pendaratan Ikan (PPI) Kota Sorong-Papua Barat Sururi, Misbah; mustasim, Mustasim; Hoek, Franklyn; Anasri, Anasri
Jurnal Airaha Vol 6 No 1: Juni 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The study related to the size and the exploitation rate of Shortfin scad are important in order to see the development condition of resource, especially on stock availibility for the management of its sustainability. This study was conducted in April - September 2013 at The Fish Landing Base (PPI) of Sorong, West Papua. This study aims to analyze the biology aspects of Shortfin scad based on itss length frequency, length-weight relationship, growth rate, mortality rate and exploitation rate of the catch.The primary data was acquired by the measurement of length and weight of Shortfin scad landed by purse seiner and from interview with the fishermen. The number Shortfin scad measured during reseach was 1.504 individuals which classified by the size of class interval, the data then analyzed to see the length-weight relationship and growth rate parameter analysis (LÂ¥and K) by using the program of FAO-ICLARM stock of the assessment tools II (FiSAT II). The results showed that the frequency and normal distribution of total length, midlength is dominated by class interval of 16,0 - 16,5 cm. The correlation between weight and length of the individual is not significantly differ with the value of b = 3,57 (positive allometriks). The length (Loo) and weight asymptotic (Loo) are 21,83 mm and 105,4 grams respectively, this is allegedly estimated that the age of Shortfin scad is approximately of 40 months or 3.3 years. The result of exploitation rate acquired from the comparison between the mortality rate of catch and total mortality (E = F / Z) is 0,35. This indicating that the exploitation rate of Shortfin scad (Decapterus macrosoma) in purse seine fisheries  at the time of research is still small due to smaller value compared to the optimal value when F = M or E = 0,5.
Kajian Sumberdaya Lobster yang didaratkan di Kota Sorong, Papua Barat Sururi, misbah; Simau, Silvester; Sudirman, Sudirman; Gunaisah, Endang; Sumbung, Sepri; Suryono, Muh; Muhamad, Samsul; Gofir, Abdul
Jurnal Airaha Vol 5 No 1: Juni 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

This paper describes the state of lobster resource which landed in Sorong, including species, fishing season, and the analysis of weight-length relationship. The measurements were carried out by using randomized sampling in three (3) lobster shelter in Sorong from September - November 2015. Total of 1.316 lobster were observed during this research. The data observed were species, carapace length (mm), weight (g) and gender. The aspects of fishing technique, season, marketing and lobster types were analyzed by using descriptive analysis, whereas the measurement data was analyzed by using  linear allometrik model to see the weight-length relationship with the equation of W = a Lb . The result showed that there are six types of lobster which landed in Sorong namely are; Panulirus ornatus, P. versicolor, P. longipes, P homarus, P penicillatus, and Thenus orientalis. Fishing season was carried the whole year which consists of the peak season (June, November, December), middle season (March-July, September-October) and bad season (August, January, February). The whole lobster observed in this research have negative allometric growth pattern which indicates that the lobster are in growth stage.
Analisa Kelayakan Usaha Budidaya Teripang (Holothuroidea) di Distrik Samate, Kabupaten Raja Ampat Ratna, Ratna; Suruwaky, Amir M
Jurnal Airaha Vol 5 No 1: Juni 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The cultivation of sea cucumbers in Samate District, the Raja Ampat is highly potential due to sufficient conditions of waters which is protected from the influence of currents, waves and a storm. The purpose of this study was to analyze the feasibility of sea cucumber cultivation in Samate districtRaja Ampat, referring to the prospect of future development. Data was collected in Samate district, Raja Ampat in November 2015 - February 2016. Samples were taken by purposive sampling method from representatives of farmers with consideration of the same level of diversity of sea cucumber cultivation area. Data analysis was performed by using financial feasibility analysis of sea cucumber cultivation with calculation of profit / loss, R-C ratio and BEP. The results showed that the earned profits in a year is amounted to Rp 25.388.000, while the value of B / C (Benefit Cost Ratio) is 3.25 or B / C > 1 which indicates that the business is feasible to be developed. BEP analysis is amounted of 4.6 kg, with the price of Rp 307.500 / kg, which means that the minimum production should be 4.6 kg at a price of Rp 307.500 /kg to achieve the capital return conditions.
Pertumbuhan dan Kandungan Karaginan Rumput Laut (Eucheuma) pada Spesies yang Berbeda Anton, Anton
Jurnal Airaha Vol 6 No 1: Juni 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The Research aims to identify the species of Eucheuma that produce the best growth and caraginan content. The research method used is experimental design with this floating method with long line system. Analysis of the experiment using Completely Randomized Design (RAL) with 3 treatments namely; Sp 1 (E.cottoni), Sp2 (E.spinosum), and Sp3 (E.edule) each of 3 replications. Observed made are growth and caraginan content of each species by water quality parameters such as temperature, salinity, pH, current, nitrate, phosphate and water brightness. The results showed that the cultivation of Eucheuma seaweed from different species significantly affected the daily growth rate during the 6 weeks of the study period. BNT test results showed that all treatments were significantly different at  5% (P <0.05). The daily growth rate at the end of the study was highest at Sp2 (E.spinosum) treatment of 4.20%, second order of Sp3 (E.edule) treatment was 3.43% and the lowest in   Sp1 (E.cottonii) treatment 1.90%. The analysis of the variety of caraginan content of Eucheuma seaweed from different species at the end of the study showed a very real effect. Furthermore, the effect on the BNT test results showed that all treatments were significantly different at the 5% level (P <0.05). The highest content of caraginan is Sp 1 (E.cottoni) equal to 61,54%, then Sp3 (E.edule) equal to 54,56% and the lowest at treatment of  Sp2 (E.spinosum) equal to 46,64%.
Tingkat Pemanfaatan Ikan Layang (Decapterus Spp) Berdasarkan Hasil Tangkapan Pukat Cincin di Perairan Timur Sulawesi Tenggara Bubun, Rita L; Mahmud, Amir
Jurnal Airaha Vol 5 No 1: Juni 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Application of the rules of the Decapterus spp fishing in east coastal Southeast Sulawesi has not been implemented in full. This is not available information about utilization extent Decapterus spp. When these condition do not get attention and management wisely, so can trigger exploitation arrest that exceeds maksimum suistanable yield Decapterus spp. The Research purposes is determines the  utilization extent of resources Decapterus spp in east coastal  Southeast Sulawesi. The method of this research is survey. Schaefer Model was used to estimate the utilization extent Decapterus spp based on the data time series from year 2007 to 2013.  The research results show : the average of utilization extent of Decapterus spp in east coastal of Southeast Sulawesi is 89,04 % and the category of the utilization extent is high fishing level.
Heat Transfer Effect of Reheater Tube Materials Steam Power Plant Prihajatno, M
Jurnal Airaha Vol 4 No 2: Desember 2015
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Reheater tube is an installation for steam reheating output of turbine to work encouraging. Therefore need be heated again of steam to increase pressure and temperature so be used for drive turbine blades. Reheater tube last work for 54,000 hours. The method used of study to mechanical test and visual and microstructure observations. It is also used iterative method for temperature loads calculation occur in reheater tube. The result of iterative calculation obtained wall tube temperature T1 = 608.43 °C, T2 = 618.18 °C, T3 = 655.74 °C and convection coefficient = 3.604,37 W/m2.oC. Based on mechanical strength of materials tube is 481.85 MPa, this is still above the minimum standards of material SA-213 T22 so that decrease was not significant. Visual observation accour oxidation corrosion and visible cavity in micro structure. Some spheroidized and decarburizing phenomena are also seen in microstructure materials. The phenomenon is due to high temperature and pressure at the long term.
Pemodelan Solidifikasi untuk Proses Pembekuan Air dengan Geometri Cetakan Es Bujur Sangkar dan Persegi Panjang Pujianto, Andreas; Prabowo, Prabowo; P. Sidhi, Sigit Deddy
Jurnal Airaha Vol 5 No 2: Desember 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Numerical study is presented concerning transient solidification for water freezing process. The ice can produces 25 kg of ice block product is used as model in this study. 2D-simpllified geometry of ice can is modeled with square and rectangular shape which have different aspect ratio (H/L) 1 and 0.62 respectively. Both of shapes is compared one to another based on heat transfer and duration of solidification. Boundary conditions use isothermal temperature walls. Three walls (top, bottom, and right) have the same temperature values are -8℃ and the left wall temperature value is 0℃. Second order implicit URANS equations were solved with laminar model in numerical calculation. Most of internal heat energy (latent and sensible) from the water released to the walls which have lower temperature than other wall for 15 hours cooling process. This condition makes temperature of the liquid water decrease and phase change occured. The rectangular shape perform better than the square shape in heat transfer of internal heat energy from the water to the walls shape. The top and bottom wall from rectangular shape have greater value of heat transfer because their area are larger than other walls. Solidification process of the water in the rectangular shape faster 7,03% than square which showed by growth of water solid fraction in time of 15 hours cooling process.
Pengujian Kualitas Air di Perairan Pantai Negeri Morella sebagai Habitat Kima (Tridacna sp.) Widyasari, Ferliana; Widiarto, Santoso Budi; Arafat, Gulam; Setiadi, Didik; Latulanit,, M. Nasrul; Fahlevi, Arif Reza
Jurnal Airaha Vol 5 No 2: Desember 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

The aims of this study is  to determine the water quality of  Negeri Morella as one of Kimas habitat in Indonesia. Data analysis was done in laboratory and then paired with map according to coordinate sampling with Geographical Projection System using Datum WGS 1984. Based on the result of water quality test obtained, temperature value ranged from 26,9 to 27,4 0C, pH value ranged between 7,88 - 8.12, salinity values ranged from 33.06 to 33.54 ppt. The value of uniformity index (E) of phytoplankton obtained in Morella waters 0.6. The values obtained showed a moderate to high level of uniformity. Value Index dominance (D) phytoplankton obtained 0.233. This value indicates that the structure of the community found there are species that extreme dominate other species (close to 0). The abundance of zooplankton obtained 2,255 individuals / L. The type of zooplankton found in Negeri  Morella is Candacia, Acartia sp, Euchaeta sp, Euchalanus sp, Corycaeus sp, macrosetella sp, Euterpina sp, Euchonchecia sp, Tortanus sp, Acrocalanus sp, Oitohona sp, Sagita sp, Ouklopleura, Larva Peneidae, Cirripedia, Echinodermata, Gastropoda dan Bivalvia.
Analisis Karakteristik Bakteri Probiotik Supriatna, Iman; Hismayasari, Intannurfemi B.; Bidiadnyani, I Gusti Ayu; Sayuti, Moh.; Yani, Ahmad
Jurnal Airaha Vol 5 No 2: Desember 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

This study aimed to identify and analyze the characterictics of probiotic bacteria. The method used was descriptive method to perform biochemical analyze on the type of probiotic bacteria derived from banana tree. Biochemical analyazed include Gram stain, catalase, oxidation, OF paraffin, OF non paraffin, citrate, ornithin, lysine, urea, MEVP, TSIA oblique, TSIA upright, lactose and sucrose. Results of laboratory analysis showed that the bacteria isolated in blood agar have the morphological characteristic of rod-shaped (bacil), gram-positive, can produce the enzym catalase, but it can not oxidize, it can not produce the enzyme citrate, ornithine, urease, These bacteria are acidic nature, able to ferment lactose and sucrose, and capable of produced acetone from glucose fermentation.
Studi Eksperimen Pengaruh Penggunaan LPG sebagai Bahan Bakar pada Motor Bensin Pembakaran dalam 5,5 HP Latif A, M. Zaki; Prasetyo, Djoko; Nurfauzi, Akhmad; Arafat, Yasser; Muhfizar, Muhfizar; Rohyadi, Rohyadi; Anasri, Anasri
Jurnal Airaha Vol 5 No 2: Desember 2016
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Cadangan Bahan Bakar Minyak (BBM) khususnya bensin semakin berkurang dan tidak dapat diperbarui lagi sementara kebutuhan semakin bertambah dan akan berdampak pada krisis energi. Penelitian ini mengkaji penggunaan Liquefied Petroleum Gas (LPG) sebagai bahan bakar alternatif pengganti BBM jenis bensin untuk mengoperasikan motor bensin siklus empat langkah. Penelitian ini dilakukan dengan memodifikasi pada bagian karburator menjadi saluran masuk untuk gas LPG. Percobaan yang dilakukan meliputi uji operasional, uji ketahanan operasi yang dilakukan hingga 100 jam operasi dengan memberikan variasi jumlah bahan bakar yang diberikan sebesar 3 Psi dan 4 Psi. Hasil penelitian ini menunjukkan bahwa LPG jenis campuran dapat digunakan sebagai bahan bakar alternatif pengganti BBM jenis bensin 4 tak.

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