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All Journal Indonesian Journal of Chemistry Dinamisia: Jurnal Pengabdian Kepada Masyarakat INTEK: Jurnal Penelitian Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Yasser, M
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Transformasi Produk Sekunder Pengolahan Minyak Parede Sebagai Produk Sambel Kerak Minyak Andi Muhamad Iqbal Akbar Asfar; M. Yasser; Andi Nurul Istiyana; Andi Muhammad Irfan Taufan Asfar; Ady Kurnia
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2021): April 2021, Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v5i2.5267

Abstract

Coconut oil processing or what is known by the Bugis people in South Sulawesi, namely Parede Oil, leaves a secondary product in the form of oil crust. This oil crust is not fully utilized, especially as a product that can increase its selling value. Therefore, this community service in the form of a community partnership program conducts training in processing oil crust into oil crust sauce. Until now, this product has survived with a shelf life of more than 4 months without the addition of any preservatives. This product is packaged in a chili pot with a net weight of 60 grams. This program has succeeded in improving the skills of partners, namely the PKK Latellang Village, Patimpeng District, Bone Regency, South Sulawesi Province, in utilizing oil crust to become oil-based chili sauce which has high economic value.
Synthesis and Characterization of Nickel Nanoparticles: Biological and Photocatalytic Properties Fadliah, Fadliah; Raya, Indah; Ahmad, Ahyar; Taba, Paulina; Burhanuddinnur, Muhammad; Gaffar, Maming; Putri, Tri Widayati; Nur, Arfiani; Abubakar, Andi Nur Fitriani; Munadi, Rachmin; Majid, Ahmad Fudhail; Pratama, Irham; Yasser, M.; Jarre, Sulistiani; Karim, Harningsih
Indonesian Journal of Chemistry Vol 25, No 1 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90034

Abstract

The potential uses of ecologically benign nickel nanoparticle manufacturing in various sectors, such as biomedicine, energy storage, and catalysis, have garnered much interest. This paper covers green approaches to nickel nanoparticle manufacturing, which integrate natural substances as stabilizing and reducing agents with eco-friendly processes. Phytochemicals derived from bacteria, microorganisms, and plant leaf extracts can convert nickel ions (Ni2+) into nickel nanoparticles. Room temperature is used for the synthesis procedure, and neither dangerous compounds nor unusual reaction conditions are used. Using a variety of analytical methods, the resultant nickel nanoparticles were characterized. We also investigate the possibility of using the generated nickel nanoparticles as a cytotoxic, photocatalytic, antioxidant, and antibacterial agents. The antimicrobial activity of nickel nanoparticles demonstrates their potent antibacterial properties, while their antioxidant activity demonstrates their capacity to combat free radicals effectively. Furthermore, nickel nanoparticles' cytotoxic activity demonstrates their capacity to kill cancer cells, and their photocatalytic activity demonstrates their efficiency in breaking down organic contaminants. This review highlights the value of ecologically benign synthetic methods and creates new avenues for developing nickel nanoparticle applications in health and the environment.
Numerical Visualization of Rudder Inflow as Effect of Increasing Angle of Attack , Najmi S.M.; Priyanto, A; Yasser, M; Maimun, A A.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 5 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v5i1.511

Abstract

This paper presents a study to examine the characteristics of the rudder inflow (propeller slipstream) using FLUENT v.6 visualization technique. The rotating propeller of 5 blades and semi-spade rudder were set in a uniform flow condition. The rudder distorts the angle-of-attack (AoA) or incident angle to the leading edge of the rudder blade. Time-averaged pressure and velocity field are proposed to analyze the AoA and show similar AoA values of 0°–7° at the region on rudder. However, it increases to 20° by those effects as the inflow comes to the rudder. From the AoA analysis the similar flow pattern is found to be about 7° in terms of the rudder angle. Cautious access is additionally necessary to introduce a reasonable safety against those inflow phenomena that would significantly influence the durability of the rudder.
Identifikasi Kandungan Kolesterol pada Udang Kelong Basah Menggunakan Metode Gas Chromatography-Mass Spectroscopy (GC-MS) Yasser, M
INTEK: Jurnal Penelitian Vol 4 No 1 (2017): April 2017
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (680.981 KB) | DOI: 10.31963/intek.v4i1.93

Abstract

This study aims to identify the content of cholesterol in Kelong shrimp that have been preserved with ice cubes. The identification of cholesterol is done using Gas Chromatography-Mass Spectroscopy (GC-MS). The result of Chromatograms from analysis using GC-MS that has been compared to a standard cholesterol showed that shrimp Kelong which have been preserved ice cubes contain cholesterol.
Pengaruh Waktu terhadap Kestabilan Nanopartikel Emas yang Disintesis Menggunakan Ekstrak Air Daun Jati (Tectona Grandis) Termodifikasi Mercaptopropionic Acid (MPA) Yasser, M; Widiyanti, Setyo Erna
INTEK: Jurnal Penelitian Vol 6 No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (50.592 KB) | DOI: 10.31963/intek.v6i1.1123

Abstract

Gold nanoparticles were synthesized using teak leaf water extract modified with Mercaptopropionic Acid (MPA). The observations for 6 days using UV-Vis spectroscopy, obtained stable gold nanoparticles which were characterized by the maximum wavelength absorption produced in the range of 538.5 nm - 541 nm.
Utilization of Green Betel Leaf as Adsorbent of Lead and Copper Metals in Artificial Wastewater Syahrir, Muallim; Yasser, M; Rosalin, Rosalin
INTEK: Jurnal Penelitian Vol 10 No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i1.4348

Abstract

Green betel leaf contains phenolic compounds that can bind metal ions. The purpose of this study was to determine the effect of variations in the mass of green betel leaf and stirring time based on the efficiency and adsorption capacity of lead and copper metals in artificial wastewater. Adsorption process using the stirring with a magnetic stirrer. The variation used is the stirring time of 30 and 60 minutes and the mass of the adsorbent is 25,30,35, 40 grams. Artificial wastewater is made from 1 gram of each Pb(NO3)2 and CuCl2.2H20 in 500 ml of aquadest. Analysis of the metal using the AAS (Atomic Absorption Spectrophotometry). The results of the analysis showed that the optimum adsorption of lead metal was at a mass of 30 grams of betel leaf and a stirring time of 1 hour, where green betel leaves were able to adsorb 99.96% of lead metal, from a Pb level of 6435 ppm to 2.48 ppm. While the optimum results for adsorption of copper metal were 35 grams of betel leaf mass and 30 minutes of stirring time, where green betel leaves were able to adsorb 49.83% copper metal, from 158 ppm Cu level to 79.27 ppm.
Co-Authors , Najmi S.M. Abubakar, Andi Nur Fitriani Ady Kurnia Ahmad Fudhail  Majid Ahyar Ahmad Andi Muhammad Irfan Taufan Asfar Andi Nurul Istiyana Arfiani Nur Asfar, Andi Muhamad Iqbal Akbar Burhanuddinnur, Muhammad Fadliah, Fadliah Harningsih Karim Indah Raya Maimun, A A. Maming Gaffar, Maming Munadi, Rachmin Paulina Taba Priyanto, A Putri, Tri Widayati Ridwan, Irham Pratama Rosalin, Rosalin Sulistiani Jarre Syahrir, Muallim Widiyanti, Setyo Erna