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All Journal Jurnal Matematika & Sains Biosaintifika: Journal of Biology & Biology Education Jurnal Jejaring Matematika dan Sains Makara Journal of Technology
Zulkarnain Jalil
Department of Aquaculture, Faculty of Marine and Fisheries, Syiah Kuala University Banda Aceh, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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The Effectiveness of Experimental Diet with Varying Levels of Papain on The Growth Performance, Survival Rate and Feed Utilization of Keureling Fish (Tor tambra) Muchlisin, Zainal Abidin; Afrido, Fardin; Murda, Tanzil; Fadli, Nur; Muhammadar, Abdullah A.; Jalil, Zulkarnain; Yulvizar, Cut
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 2 (2016): September 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i2.5777

Abstract

The objective of present study was to determine the optimum level of papain in the diet of keureling fish (Tor tambra). The complete random design was utilized in this study. Six levels of papain dosage were tested in triplicates, i.e. 0 (control); 17.5 mg kg-1, 20.0 mg kg-1, 22.5 mg kg-1, 25.0 mg kg-1 and 27.5 mg kg-1 of feed. The experimental fish were fed the experimental diet two times a day at 8 AM and 5 PM at feeding level of 5% body weight for 90 days. The Anova test result showed that papain enzyme gave a significant effect on the weight gain, daily growth rate, specific growth rate, survival rate, feed conversion ratio and feed efficiency (P<0.05). The Duncan multi-rage test result showed that the higher values for all measured parameters were obtained at the dosage of 27.5 mg kg-1. Therefore, it is concluded that the optimum dosage of papain enzyme for keureling fish was 27.5 mg kg-1 of feed.How to CiteMuchlisin, Z. A., Afrido, F., Murda, T., Fadli, N., Muhammadar, A. A., Jalil, Z., & Yulvizar, C. (2016). The Effectiveness of Experimental Diet with Varying Levels of Papain on The Growth Performance, Survival Rate and Feed Utilization of Keureling Fish (Tor tambra). Biosaintifika: Journal of Biology & Biology Education, 8(2), 172-177.
Efektifitas Penggunaan Silika dari Abu Sekam Padi sebagai Katalis pada Material Penyimpan Hidrogen Sistem MgH2 Jalil, Zulkarnain; Pajriana, Elisa; Rahwanto, Adi
Jurnal Matematika dan Sains Vol 22 No 1 (2017)
Publisher : Institut Teknologi Bandung

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Magnesium (Mg) and its alloys are among the potential candidates as materials for hydrogen stor-age applications because they have the ability to absorb hydrogen in large quantities. However Mg has a drawback, ie kinetic reaction is quite slow. For that we need an intensive effort to overcome this, one of them is with catalyst insertion. In this paper, we report on the use of silica catalyst (SiO2) from rice husk ash in the MgH2 hydrogen storage material. SiO2 material inserted into MgH2 of 1 wt%, 3wt% and 5wt% using high energy ball milling technique. Results of observations by XRD showed a milling process that lasted for 5 hours successfully reduced to nanokristal scale. The emerging phase, from the XRD observation, is the MgH2 phase as the most dominant phase. Thermal characterization with DSC showed that the addition of SiO2 was able to decrease the desorption time and temperature of 338,720C in 14.75 minutes in 5wt% catalyst variation.
Identifikasi Kandungan Unsur pada Pasir Kuarsa Menggunakan Metode X-Ray Flourescence di Kecamatan Samadua, Aceh Selatan : Identification of Elemental Contents in Quartz Sand Using the X-Ray Flourescence Method in Samadua District, South Aceh Bakruddin, Bakruddin; Rachmatillah, Faukas; Amri, Asbahrul; Jalil, Zulkarnain
Jurnal Jejaring Matematika dan Sains Vol. 2 No. 2 (2020): Edisi Desember 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2020.v2.i2.401

Abstract

Quartz sand is a non-metallic natural resource that can be used to develop various kinds of human needs, however, it is necessary to know in advance the amount and elements contained therein. This research will conduct a study related to the amount of element concentration in quartz sand in Samadua District, South Aceh Regency. The research method used in this research is the X-Ray Fluorescence technique. The results showed that the elements found in the quartz sand samples were Si, K, Ca, Ti, V, Cr, Mn, Fe, Cu, Sr, Ba, and Eu. From these results, there are three elements that have the highest concentration, namely the element Si as much as 62%, Ca as much as 15.7%, and element K as much as 13.7%.
Apparent Porosity and Compressive Strength of Heat-Treated Clay/Iron Sand/Rice Husk Ash Composites over a Range of Sintering Temperatures Machmud, M. Nizar; Jalil, Zulkarnain; Afifuddin, Mochammad
Makara Journal of Technology Vol. 20, No. 2
Publisher : UI Scholars Hub

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Abstract

Novel composites of clay/iron sand/rice husk ash (RHA) have been developed. Electric furnace was used to perform heat treatment on the composites to study the effect of sintering temperature on their apparent porosity and compressive strength. Two types of RHA with different bulk density were prepared to gain an understanding of the influence of apparent porosity on compressive strength of the heat-treated composites over a range of sintering temperatures. Heattreated composites, made of clay/iron sand and clay/RHA, were also prepared as a referenced material. X-ray diffraction (XRD) analysis was further performed to comprehensively discuss the role of iron sand on apparent porosity and compressive strength of the heat-treated composites. The results show that the increase of sintering temperature reduces apparent porosity of the heat-treated composites. Reducing on the apparent porosity was then followed by the increase of compressive strength of the heat-treated composites. Compressive strength of the heat-treated composites was not sensitive to the sintering temperature up to 800 °C, and it would be more improved at the sintering temperature above 800 °C. This study concludes that such sintering temperature significantly improved apparent porosity and compressive strength of the composites due to use of iron sand.
Co-Authors Abdullah A. Muhammadar Adi Rahwanto Amri, Asbahrul Bakruddin, Bakruddin Cut Yulvizar Fardin Afrido, Fardin M. Nizar Machmud Mochammad Afifuddin Nur Fadli Pajriana, Elisa Rachmatillah, Faukas Tanzil Murda, Tanzil ZAINAL ABIDIN MUCHLISIN