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All Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Prosiding Seminar Nasional Inovasi Teknologi Terapan
Abdullah Hamid
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Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Mechanical Engineering

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Study on Morphometric, Meristic and Growth Patterns of Osteochilus wandersii from the Rokan Kiri River, Rokan Hulu Regency, Riau Province Abdullah Hamid; Windarti '; Deni Efizon
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Osteochilus wandersii or lelan fiah is freshwater fish that inhabit the Rokan Kiri River. This fish has high economical value, around Rp 30.000-50.000/Kg. Information on biological aspects of this fish, including the morphometric and meristic, however, is rare. To understand the morphometrical, meristical characteristics and growth pattern of this fish, a research had been conducted from November to December 2014. There were 116 fishes (66-185 mm SL and 5.39-143.13 gr BW) captured from the Rokan Kiri River. There were 26 morphological characteristics measured and 10 meristical characteristics counted. Results shown that all of morphometrical characteristics were almost isometric as the fish growing. The meristical characteristic of the fish were as follow: D.2.101/2-121/2; P.1.14-15; V.1.8; A.1.41/2; C.2.17, the number of scale in the pre-dorsal fin was 10-11, lateral line scale was 33-36, around the body was 27-29 and around the caudal peduncle was 14-16. The Lenght-weight relationship shown that the growth of male and female fish was isometric (b = 3.09). The water quality parameter shown that temperature 25-28 °C, transparency 12-40 cm, pH 6, DO 4.7-6.48 mg/l, CO2 17.97-27.96 mg/l, and current speed 0.327-0.625 m/s. Data on water quality parameters indicate that water quality in the Rokan Kiri River is able to support the life of the lelan fish.Keywords : Osteochilus wandersii, Rokan Kiri River, morphometric, meristic, growth patterns
PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN MEKANIK PADA KOMPOSIT BERPENGUAT SERAT POHON TERAP MENGGUNAKAN RESIN POLYSTER BQTN-157 Abdullah hamid; Masdani, Masdani; Idiar, Idiar
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Composite is a system composed by mixing two or more different materials, in form and composition. Between two or more materials are insoluble in each other. Composites are very influential on the mechanical properties. The most influential factors are fiber fraction, fiber length and immersion used. This study aims to examine the effect of volume fraction variations on the mechanical properties of applied tree bark fiber reinforced composites. This study used matrix and fiber volume fraction 5% : 95%, 6% : 94%, 7% : 93% with 5% NaOH for 2 hours. The material used is fiber. Applied tree bark. Composites are made using the hand lay up method. The tests carried out were tensile test and Impact Charpy test with ASTM D638 Type 1 tensile test standard and ISO-179 impact test. The result of the highest tensile strength at 7% volume fraction that is equal to 36.32 Mpa. While the results of the smallest tensile strength at 5% volume fraction that is equal to 28.74 Mpa. And the results of the highest composite impact test at 7% volume fraction that is 0.051198 Joul/mm2. Meanwhile, the lowest impact strength was at 5% volume fraction with a value of 0.009652 Joul/mm2.
Co-Authors Deni Efizon Idiar, Idiar Masdani, Masdani Windarti '