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All Journal Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL REKAYASA SISTEM INDUSTRI Jurnal Puan Indonesia Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Pengabdian Masyarakat Charitas Prosiding Seminar Nasional Ilmu Sosial dan Teknologi (SNISTEK)
Zefri Azharman
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Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

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Journal : jurnal rekayasa sistem industri

 1 
TEKNIK PENYERAPAN LIMBAH INDUSTRI LOGAM BERAT Cd DENGAN MENGGUNAKAN NANOPARTIKEL HIDROKSIAPATIT Zefri Azharman
JURNAL REKAYASA SISTEM INDUSTRI Vol 3 No 1 (2017): (Desember 2017)
Publisher : Universitas Putera Batam

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Abstract

The development of industry in the field of electronics is increasingly developing along with the development of technology. The negative impact of these developments is Cd waste (Cadmium). This study aims to measure the absorption capacity of hydroxyapatite nanoparticles in absorption of Cadmium metal which is usually present in electrolytic industrial waste. The absorption of Cd metal is carried out through the technique of hydroxyapatite nanoparticles. The absorption of Cadmium metal is carried out by heating 75oC and carried out by precipitation technique of hydroxyaptite Nanoparticles. Atomic absorption spectrophotometry instrument tools are required in this study. The absorption results show an absorption of 66.36% of the cadmium solution or has a Quantity of 6.77 to the hydroxyapatite nanoparticles.
Analisis Konsumsi Energi Karyawan Ketika Melakukan Olahraga Tenis: Studi Kasus Karyawan PT. Aker Solution Batam Elva Susanti; Welly Sugianto; Zefri Azharman
JURNAL REKAYASA SISTEM INDUSTRI Vol 3 No 2 (2018): Mulai tersedia daring sejak Juni 2018
Publisher : Universitas Putera Batam

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This study aims to find the level of energy consumption, CVR% and Boddy mass index through the pulse before and after sports. In calculation of CVR% there are 4 people needed improvement, 1 person must reduce the activity time so as not to injury while doing sports. In determining the heartbeat pulse (pulse) by testing the wilxocon turns out the higher heart rate before exercising, the higher the heart rate after exercise or vice versa. In addition, by doing chi square test between energy consumption with obesity has nothing to do.
AKTIVITAS ANTIBAKTERIA EKSTRAK METANOL DAUN TANAMAN Solanum ferox L Hazimah Hazimah; Zefri Azharman; Yuharmen Yuharmen; Virsa Rahyuti; Afriliani Afriliani
JURNAL REKAYASA SISTEM INDUSTRI Vol 4 No 1 (2018): (November 2018)
Publisher : Universitas Putera Batam

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Abstract

Solanum ferox or acid aubergine plants is one type of vegetable used as flavoring in food. Solanum ferox contains terpenoids, steroids, flavonoids, alkaloids and phenolics. Solanum ferox has antipyretic, antirheumatic, anti-asthma, antiviral and as a drug for syphilis. The purpose of this study is to test the antibacterial activity of leaf methanol extract of Solanum ferox plant. Leaf Solanum ferox is extracted using methanol. Methanol extract was tested for antibacterial activity using diffusion method to use E.coli, S.aureus and B.subtilis bacteria. Amoxicillin is used as a positive standard while negative controls are solvents used to dissolve samples. Antibacterial activity of methanol and amoxicillin extract showed inhibitory zones of E.coli of 7,72-11,67 mm and 19.97 mm, inhibitory zone to bacterium B.subtilis only at 5.7 μg/mL concentration of 11,29 mm and amoxicillin 18, 51 mm.
Co-Authors Adicita, Yosef Afriliani Afriliani Ambalegin Ambalegin Arianto, Tomi Christine Jose Delia Meldra Elva Susanti Handi Wilujeng Nugroho Hazimah, Hazimah Kurniawan Hamidi Lina Hanarisanty Mardiansyah, Yopy Nurlinda Ayu Triwuri Prajati, Gita Roselyn Indah Kurniati Sugianto, Welly Virsa Rahyuti Yan Mahesa Damanik Yuharmen - Yuharmen Yuharmen