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All Journal Teknika Jurnal Ilmiah Giga Emitor: Jurnal Teknik Elektro JST ( Jurnal Sains Terapan ) Promotif: Jurnal Kesehatan Masyarakat Turbo : Jurnal Program Studi Teknik Mesin JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Jurnal Nasional Komputasi dan Teknologi Informasi INTEK: Jurnal Penelitian Seminar Nasional Teknologi Informasi Komunikasi dan Administrasi [SEMINASTIKA] Sainstek : Jurnal Sains dan Teknologi Jurnal Teknologi Elekterika Jurnal E-Komtek Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat JOMPA ABDI: Jurnal Pengabdian Masyarakat Jutek JAGO Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) Jurnal Pengabdian Ahmad Yani Geosains Kutai Basin Jurnal ISIP: Jurnal Ilmu Sosial dan Ilmu Politik
Arief Muliawan
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EFEKTIVITAS PEMAKAIAN FILTER BERPORI DAN KARBON AKTIF SEBAGAI MEDIA FILTER DALAM MENURUNKAN POLUTAN AIR PDAM Muliawan, Arief; Amalinda, Finta
Promotif : Jurnal Kesehatan Masyarakat Vol. 8 No. 1: JUNE 2018
Publisher : Fakultas Kesehatan Masyarakat, Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1833.026 KB) | DOI: 10.56338/pjkm.v8i1.229

Abstract

Air distribusi PDAM pada umumnya masih mengandung Fe (zat besi) dan Mn (Mangan). Adanya kandungan Fe dan Mn dalam air ditandai dengan adanya perubahan fisis warna air menjadi kecoklatan dan pengendapan setelah air ditampung atau diendapkan pada bak penampungan. Telah dilakukan penelitian tentang pemanfaatan filter berpori dan karbon aktif sebagai media penyaring air PDAM Kota Bontang. Filter yang digunakan ialah 0,5 µm, 0,3µm dan karbon aktif. Pengujian dilakukan dengan penentuan kandungan air pada tiap filter dan menentukan massa endapan yang tersaring selama 7 hari. Hasil yang diperoleh pada saat air langsung diambil dari PDAM diperoleh kandungan besi 1,606 mg/l, mangan 0,157 mg/l dengan kekeruhan 91 NTU. Dengan dialirkan air ini pada filter 0,5 mikron diperoleh penurunan tingkat kandungan besi 1,101 mg/l, mangan 0,141 mg/l dengan kekeruhan 74 NTU. Ditambah lagi dengan penyaringan 0,3 mikron diperoleh penurunan tingkat kandungan besi 0,309 mg/l, mangan 0,083 mg/l dengan kekeruhan 42,49 NTU. Pada filter terakhir dengan penggunaan karbon aktif diperoleh penurunan tingkat kandungan besi 0,066 mg/l, mangan 0,069 mg/l dengan kekeruhan 2,07 NTU. Pada hari ke 4 diperoleh perubahan massa filter 0,5 mikron sejumlah 25 gr dan filter 0,3 mikron sejumlah 4 gr. Sedangkan pada hari ke 7 diperoleh perubahan massa timbangan filter 0,5 mikron sejumlah 53 gr dan filter 0,3 mikron sejumlah 8 gr. Sedangkan pada karbon aktif tidak terjadi perubahan massa selama proses penfilteran. Dari hasil ini menunjukan bahwa penggunaan filter berpori 0,5 mikron, 0,3 mikron dan karbon aktif sangat baik untuk aliran air PDAM yang kurang bersih. 
The Welding Defect Analysis on ASTM A106 Grade B with Inconel 82 Using Metallography Test and Microhardness Test Muliawan, Arief; Ilmianih, Rizki
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 8 No 2 (2024)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v8i2.2195

Abstract

Welding inspection is an important practice to assess the integration of structures and their components in many industrial applications. The quality of industrial pipes must be able to withstand high pressures and temperatures, such as in the riser tube primary reformer. In this study, inspection of welding results on ASTM A106 grade B pipes with Inconel 82 using metallography and microhardness was carried out. Based on the results of visual tests and penetrant tests, cracks were found in the meeting area between the Inconel 82 weld and ASTM A106 grade B. The results of the metallography test in the meeting area between Inconel 82 and ASTM A106 grade B showed continuous microcracks and continuous macrocracks. The results of microhardness testing in the area around the crack had a lower hardness value than the area far from the crack. The welding connection of ASTM A106 grade B with Inconel 82 could not be used optimally at a temperature of 748oC because Inconel 82 has a silicon element of 0.5% which causes a difference in solidification between ASTM A106 grade B and Inconel 82
Analisis Unjuk Kerja Pompa P-8340A Pada Motor Listrik Dan Motor Diesel Di Tangki T-8320A/B Norhidayah, Siti; Kusmianto, Herdi; Hurung Anoi, Yano; Muliawan, Arief
Journal of Applied Mechanical Engineering and Renewable Energy Vol 5 No 1: February 2025
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jamere.v5i1.1098

Abstract

This research aims to analyze the performance of the pump P-8340A operated by an electric motor and a diesel motor in the tank T-8320A/B. Apart from focusing on the performance of the two types of motors as pump drivers, this study also evaluates the time to fill the fire fightine water tank and the factors that influence the operational efficiency of the pump.The research methods used include taking field data at the operating location, analyzing flow capacity, pressure head and speed head, as well as calculating pump power and efficiency. The analysis results show that pumps with electric motors have a longer charging time compared to diesel motors, namely 38 hours for electric motors and 29 hours for diesel motors, with flow capacities of 239.68 m³/h and 310.54 m³/h respectively.From this research it was also identified that the total head losses in the pump were influenced by friction factors in the piping system and the characteristics of the fluid being transferred. The conclusion of this research is that although electric motors are more efficient in energy consumption, diesel motors are still superior in capacity and speed in operating the P-8340A pump. Recommendations for future operations include closer monitoring of the piping system and considering modifications to the drive system according to operational needs.
Studi Penurunan Kadar Logam Besi (Fe) dan Logam Mangan (Mn) pada Lempung terhadap Perubahan Arus Listrik dalam Solenoida Zain, Abdul; Muliawan, Arief
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.319 KB) | DOI: 10.31963/intek.v3i2.54

Abstract

In the soil there are many compound of Fe and Mn as well as in the clay. Those two compounds need to be reduced to improve the resistive value of the clay. One method to reduce those compounds is by electromagnetic filter using solenoid. From the experiment circuit, it was found that the resistive value was 4.5 Ohm with maximum current of 5 Ampere. Concentration of Fe and Mn after filtered were 0.46 ppm and 0.40 ppm respectively.
Prototipe Pengendali Pintu Darurat Menggunakan Mikrokontroler ATMega 16 Zain, Abdul; Muliawan, Arief
INTEK: Jurnal Penelitian Vol 5 No 2 (2018): Oktober 2018
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (669.496 KB) | DOI: 10.31963/intek.v5i2.583

Abstract

In a building should have a good security system,especially Emergency Exit (emergency evacuation path).Emergency Exit is important because when an emergency occursin the building, the first thing to do is get out of the lab building.One thing to note is the emergency exit door. With the emergencydoor that can be opened quickly so all workers can get outquickly as well from the building when an emergency occurs.So,we need a model (prototype) controlling an emergency door thatcan function properly in an emergency. Prototype newemergency door controller is expected to be implemented intoactual emergency door. Prototype can be accessed with a pushbutton by the user facility. The prototype controller usemicrocontroller ATMega16. And for each emergency exitmovement is monitored and its status is expressed in LEDindicator lights and LCD display on 16x2. Modeling controllingemergency exit of a series of tests using a prototype have workedwell except on the 3rd test caused an error when calibrating thedistance between Ultrasonic sensor with Emergency Door.
Biogas Fermentation from Vegetable Waste and Horse Rumen Involving Effective Microorganism-4 (EM4) Septiani, Mimin; Nuhardin, Irhamni; Muliawan, Arief
INTEK: Jurnal Penelitian Vol 7 No 1 (2020): In Press
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.775 KB) | DOI: 10.31963/intek.v7i1.2086

Abstract

A vegetable waste is an organic matter that contains cellulose which potential to be processed into biogas with anaerobic fermentation process. The aims of this research are to find out how long time to produce biogas from vegetable waste and horse Rumen by using EM4, what does the effect of the addition of EM4 to the biogas yield and the content of the produced gas. Vegetables waste and Rumen rasio 1:1 (500g:500g). Water Content of 500g. Addition variable of EM4 in each digester are 0 ml, 50 ml, 100 ml, 150 ml dan 200 ml. Fermentation process takes time about 3 to 15 days.  This result shows that the average time of fermentation lasts up to 11 days. The addition of 150 ml EM4 generate the highest pressure, come to 322.801 Pa, capable of producing the highest biogas yield of 0.2679 % with CO2content of 5.15 %.
Bias Seksisme dalam Penulisan Berita Olahraga: Analisis Wacana Kritis terhadap Represenstasi Atlet Perempuan dalam Asian Games 2018 di Liputan 6.Com Arief Muliawan
Jurnal ISIP: Jurnal Ilmu Sosial dan Ilmu Politik Vol. 18 No. 1 (2021): Jurnal ISIP: Jurnal Ilmu Sosial dan Ilmu Politik
Publisher : Institute of Social and Political Science Jakarta (Institut Ilmu Sosial dan Ilmu Politik Jakarta - IISIP Jakarta)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36451/jisip.v18i1.46

Abstract

This article reveals sexist bias in reporting on the 2018 Asian Games event on the online media Liputan6. com. The theoretical basis used is the theory of commodification, gender theory and feminism and representation. The research method takes into account Sara Mills’s critical discourse analysis, with news subjects selected purposively with a sexual bias. The results of the study reveal that the bias occurs through the representation of women who have been reduced in such a way that they only construct female athletes as beautiful aesthetic objects. Women are selected, defined, and displayed as objects and it no longer corresponds to the relevance of sports reporting. This reduction occurs both in texts and in visual image displays.
Thermal Engineering of Conventional Heating Devices for Manual Tire Patching: Energy, Heat, and Operational Safety Study Rizki Ilmianih; Arief Muliawan
JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Vol 13 No 1 (2025)
Publisher : Pendidikan Fisika UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jpf.v13i1.57571

Abstract

This research examines the design and thermal analysis of a gasoline-based heating device that functions as a heating medium in the manual tire patching process. The working principle of this device is to generate heat through gasoline combustion to optimally bond the patch material with the tire surface. This study aims to assess the heat efficiency, energy consumption, and safety and environmental sustainability aspects of the heating system. Data collection was conducted through direct observation of tire patch workshop businesses in the local community. Based on the test results, the tool is able to reach working temperatures between 244°C and 289°C, with a relatively short heating time of about 2 to 3 minutes per cycle. In addition to providing time efficiency, it is also energy-efficient, requiring only about 1 liter of gasoline for multiple uses. Performance tests show that it produces low emissions, making it more environmentally friendly than the conventional methods commonly used. With affordable production costs and simple construction, this tool can be an effective and applicable alternative solution for small businesses in the field of tire patching services.
Co-Authors Abdul Zain Ahmad Yani Arief, Risal Ayu Dita Sari Dedy Daud Erdo Banu Wicaksono Febria Anita Finta Amalinda Frely Didit Sukardi Hardianto Hardianto Hurung Anoi, Yano Indra Kusumawardhana Irianto Irma Safni Irma Safni Irvan Prasetio Kusmianto, Herdi Mochammad Imron Awalludin Najma Safienatin Najah Norhidayah, Siti Nuhardin, Irhamni Raidon Hutahaean Ramadhan, Muhammad Derian Alfaraldi Rifaldy Atlant Tungga Risal Arief Rizki Ilmianih Septiani, Mimin turahyo, Turahyo Ujiburrahman Ujiburrahman Yano Hurung Anoi