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INDONESIA
Jurnal Kelautan : Indonesian Journal of Marine Science and Technology
Published by Universitas Trunojoyo Madura
ISSN : 19079931     EISSN : 24769991     DOI : -
Core Subject :
This journal encompasses original research articles, review articles, and short communications, including: Marine and fisheries ecology and biology, Marine fisheries, Marine technology, biotechnology, Mariculture, Marine processes and dynamics, Marine conservation, Marine pollution, Marine and coastal resource management, Marine and fisheries processing technology, Salt technology, Marine geology, physical and chemical oceanography.
Arjuna Subject : -
Articles 13 Documents
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Search results for , issue "Vol 11, No 1 (2018)" : 13 Documents clear
MIKROALGA: SUMBER ENERGI TERBARUKAN MASA DEPAN Sarman Oktovianus Gultom
Jurnal Kelautan Vol 11, No 1 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i1.3802

Abstract

Penemuan sumber bahan bakar terbarukan sangat penting untuk menjawab permasalahan keterbatasan energi bahan bakar berbasis fosil dalam memenuhi kebutuhan energi yang terus meningkat. Selain itu, penggunaan bahan bakar terbarukan diharapkan dapat mengurangi pencemaran lingkungan yang selama ini bersumber dari emisi gas CO2 hasil pembakaran bahan bakar fosil. Salah satu sumber bahan bakar alternatif terbarukan masa depan adalah mikroalga. Pengembangan mikroalga sebagai sumber energi terbarukan terus dilakukan karena memiliki keuntungan dibandingkan sumber energi lainnya, seperti laju produksi biomassa yang tinggi, tidak berkompetisi dengan bahan pangan, serta tidak membutuhkan lahan yang luas untuk pertumbuhannya. Technical review ini diarahkan untuk memberikan informasi tentang pengembangan dan pemanfaatan mikroalga sebagai sumber energi akternatif terbarukan, termasuk teknologi panen dan korvesi mikroalga menjadi bahan bakar.MICROALGAE: FUTURE RENEWABLE ENERGY SOURCES ABSTRACTThe discovery of renewable fuel sources is critical to address the problem of limited fossil fuel energy in meeting the increasing energy demand. In addition, the use of renewable fuels is expected to reduce environmental pollution that has been sourced from CO2 emissions of fossil fuel combustion. One of the future renewable alternative fuel sources is the microalgae. Development of microalgae as a renewable energy source continues to be done because it has advantages over other energy sources, such as high biomass production rates, not competing with foodstuffs, and does not require extensive land for growth. This Thechnilcal review is directed to provide information on the development and utilization of microalgae as a renewable alternative energy source, including harvesting technologies and microalgae convertion into fuel.Keywords: microalgae, biodiesel, cultivation, energy
METODE PELAKSANAAN PEKERJAAN PEMBANGUNAN KAPAL IKAN 30 GT Bambang Antoko
Jurnal Kelautan Vol 11, No 1 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i1.2780

Abstract

Mata pencaharian wilayah pesisir masyarakat Indonesia sebagai besar nelayan, memerlukan kapal dan peralatan penangkap ikan yang cukup memadai. Untuk itu perlu dilakukan pengembangan teknologi metode pelaksanaan pembangunan pada kapal penangkap ikan yang murah, terukur dan modern. Sehingga dikembangkan kapal penangkap ikan dengan kapasitas 30 GT dengan bahan fiberglass yang dapat dikembangkan dalam proses fabrikasi dengan teknik fabrikasi yang terencana. Dalam proses pembangunan bahan fiberglass memiliki kemudahan dalam proses pembentukan lambung dan proses penyambungan bagian-bagian kapal penangkap ikan yang akan dikembangkan tersebut. Metode yang digunakan dalam kegiatan pembangunan kapal akan mengacu kepada system dan prosedur tata laksana pembangunan fisik kapal fiberglass, sesuai dengan struktur konstruksi maupun laminate schedule fibreglass yang dikerjakan secara seksama sehingga glass content mencapai kisaran 30-35%, sesuai dengan standard marine.ABSTRACTThe livelihoods of the coastal areas of the Indonesian people as large fishermen need adequate fishing vessels and fishing equipment. For this reason, it is necessary to develop technology for the implementation of development methods on cheap, measurable and modern fishing vessels. So that a fishing vessel with a capacity of 30 GT was developed with fiberglass material that could be developed in the fabrication process with planned fabrication techniques. In the process of building fiberglass material has the ease of the process of forming the hull and the process of connecting parts of the fishing vessel to be developed. The method used in ship building activities will refer to the system and procedures for the physical construction of fiberglass boats, in accordance with the structure of the construction and fiberglass laminate schedule which is done carefully so that glass content reaches the range of 30-35%, in accordance with marine standards.Keywords: development, fiberglass ship, marine standard
HAMBUR BALIK AKUSTIK PERMUKAAN SUBSTRAT DASAR PERAIRAN MENGGUNAKAN ECHOSONDER BIM TUNGGAL Baigo Hamuna; Lisiard Dimara; Sri Pujiyati; Nyoman Metta N Natih
Jurnal Kelautan Vol 11, No 1 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i1.2892

Abstract

Penelitian ini bertujuan untuk menganalisis nilai hambur balik permukaan dasar perairan berupa pasir dan lumpur. Echosounder bim tunggal Simrad EK15 frekuensi 200 kHz digunakan untuk perekaman hambur balik akustik permukaan dasar perairan. Hasil penelitian ini menggambarkan nilai rata-rata hambur balik permukaan substrat perairan pasir bervariasi antara -37.48 dB sampai -36.03 dB, dan lumpur bervariasi antara -46.98 dB sampai -45.15 dB. Hal ini juga menunjukkan bahwa substrat pasir memiliki tingkat kekerasan dan ukuran butir yang lebih besar dibandingkan jenis substrat lumpur substratSURFACE BACKSCATTERING STRENGTH OF SEABED SUBSTRATE USING SINGLE BEAM EHOSOUNDERABSTRACTThe objectives of this research are to analyze the surface backscattering strength of seabed. The single beam echosounder Simrad EK15 with 200 kHz of frequencies was used for recordings of seabed acoustic backscattering. Data collection was conducted in April 29 – Mei 2 2017 which located in the Yos Sudarso Bay, Jayapura, Papua Province. Sampling substrate was taken for ground truth data using sedimen grab. The results show that average value of surface backscattering strength of sand varied between -37.48 dB up -36.03 dB, and mud varied between -46.98 dB up -45.15 dB. It shows also that sand has a high substrate roughness, hardness, and grain size larger than the type of mud substrate. In acoustic backscattering values of sand were greater than mud.Keyword: Surface scattering, Sand, Mud, Single beam echosounder,

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