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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Prosiding KOMMIT Jurnal Sains dan Teknologi JMPM (Jurnal Material dan Proses Manufaktur) Machine : Jurnal Teknik Mesin Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jambura Science of Management JIIP (Jurnal Ilmiah Ilmu Pendidikan) Tsamratul Fikri (TF) International Journal of Innovation in Mechanical Engineering and Advanced Materials Engineering Science Letter Journal of Novel Engineering Science and Technology Bincang Sains dan Teknologi Jurnal Nusantara Madani International Journal of Advanced Science Computing and Engineering At-Tadzkir: Islamic Education Journal Jurnal Kedokteran Hewan AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Riwayat: Educational Journal of History and Humanities MRB ARBUS Jurnal Polimesin Journal of Applied Science and Advanced Engineering
Mohamad Yamin
Fakultas Peternakan Institut Pertanian Bogor
Religion Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Transportation Veterinary Other

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PERANCANGAN SISTEM WATER HAMMER STUDI KASUS DI GEDUNG KUNINGAN JAKARTA Kurniawan, Wahyu; Yamin, Mohamad; Mahandari, Cokorda P.
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 11 No. 2 (2025)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v11i2.1649

Abstract

Water Hammer adalah sebuah fenomena lonjakan tekanan yang timbul dari perubahan kecepatan aliran secara tiba-tiba, menimbulkan tegangan yang signifikan yang dapat merusak semua equipment yang terdapat di jalur pemipaan. Untuk mengantisipasi hal tersebut maka diperlukan suatu sistem untuk meminimalisir terjadinya water hammer. Studi ini dilakukan pada gedung apartemen yang memiliki ketinggian 200 meter dengan menggunkan pompa vertical multistage dari brand xylem-lowara dengan head pompa 18 Bar dan flow 45 m3/jam. Jenis pipa yang digunakan GIP medium dan menggunakan non return valve dari brand claval. Telah dilakukan perhitungan secara software cla-cav mendapatkan hasil tekanan balik pada saat power blank out sebesar 404 Psi atau 27 Bar, serta dibuktikan melalui perhitungan teoritis dengan menghitung potensi pressure drop dari pipa, dan elbow yang mendapatkan hasil 375.84Psi atau 25.92 Bar. Hasil penelitian ini dinyatakan layak fungsi dan memenuhi kriteria yang dibutuhkan.
STUDI NUMERIK DAN EKSPERIMENTAL PENGARUH KECEPATAN FLUIDA TERHADAP KARAKTERISTIK ALIRAN MELALUI DIFFUSER Warliman, Wadli; Yamin, Mohamad; Mahandari, Cokorda Prapti
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 11 No. 2 (2025)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v11i2.1868

Abstract

Diffuser adalah komponen saluran fluida yang berfungsi memperlambat aliran dan meningkatkan tekanan statis melalui geometri yang melebar dari inlet ke outlet. Salah satu permasalahan utama pada diffuser adalah fenomena flow separation yang dapat menurunkan efisiensi sistem. Penelitian ini bertujuan untuk menganalisis pengaruh variasi kecepatan fluida terhadap distribusi kecepatan, distribusi tekanan, dan energi kinetik turbulen pada diffuser dengan sudut kemiringan tetap 25°. Pengujian dilakukan secara numerik menggunakan perangkat lunak Ansys Fluent 2023 R1 dengan metode Computational Fluid Dynamics (CFD) dan secara eksperimental menggunakan wind tunnel. Hasil studi menunjukkan bahwa peningkatan kecepatan fluida dari 4 m/s, 8 m/s, dan 12 m/s meningkatkan nilai energi kinetik turbulen dari 1,014 J/kg, 3,792 J/Kg, dan 9,548 J/kg, memperbesar gradien tekanan, dan menggeser posisi flow separation pada daerah downstream. Secara praktis, temuan ini dapat menjadi acuan desain diffuser untuk aplikasi ventilasi, sistem pembuangan, dan saluran mesin yang membutuhkan pengendalian separasi aliran demi meningkatkan efisiensi energi.
Sistem Manajemen Termal Baterai LiFePO4 Menggunakan Pelat Pendingin Mini Channel Untuk Aplikasi Kendaraan Listrik Yaqien, Angga Ainul; Yamin, Mohamad; Mahandari, Cokorda Prapti
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 3 (2023): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i3.59241

Abstract

Fungsi baterai Lithium ion adalah memberikan tenaga listrik yang cukup pada kendaraan listrik. Namun, baterai tersebut rentan terhadap suhu tinggi  karena dapat menyebabkan thermal run away sehingga dibutuhkan Baterai Thermal Management System (BTMS). Penelitian ini bertujuan untuk menganalisis sistem manajemen termal baterai (BMTS) dengan pendinginan aktif pada baterai LiFePO4 untuk menurunkan termperatur kerja baterai dalam kondisi operasi yang optimal. Sistem BTMS dianalisis dengan pendekatan pemodelan tiga dimensi menggunakan Computational Fluid Dynamic (CFD) untuk karakterisasi termal dengan software ANSYS Fluent 2023 R1. Model turbulensi standar K- digunakan pada sel baterai tunggal pada berbagai laju pelepasan untuk mengetahui kenaikan suhu baterai. Analisis juga dilakukan pada modul baterai dengan atau tanpa mini channel. Suhu modul baterai dalam kondisi pelepasan 5C tanpa sistem pendingin mencapai 354.63 K, kondisi ini dapat menyebabkan thermal runaway. Namun pengaruh sistem pendingin mini channel pada laju aliran massa 1x10-1 kg/s mampu mengurangi suhu maksimum modul baterai menjadi 12.14% pada debit 5C. Hasil penelitian ini dapat mengendalikan suhu pada baterai dalam kondisi operasi baterai yang optimal. Implikasinya sistem BTMS dengan mini channel ini dapat di terapkan pada kendaraan listrik dengan kondisi penggunaan daya yang tinggi.
The Existence of the Qadiriyah-Naqsabandiyah Order in the Development of the Suryalaya Tasikmalaya Islamic Boarding School Yamin, Mohamad; Basri, Hasan; Suhartini, Andewi; Meliani, Fitri
At-tadzkir: Islamic Education Journal Vol. 2 No. 2 (2023): Progressive Islamic Education
Publisher : Perkumpulan Dosen Tarbiyah Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59373/attadzkir.v2i2.12

Abstract

The existence of the Qadiriyah-Naqsabandiyah orders in Indonesia has played an important and strategic role in the community. The role of the Qadiriyah-Naqsabandiyah orders in the field of education is not limited to aspects of ritual and character building, noble morals, unpretentious personality, and diligent worship, but also to aspects of social solidarity and social sensitivity. This research tries to reveal the role of qadiriyah and naqsabandiyah order education in Pesantren Suryalaya Tasikmalaya. The results of this study revealed that the role of qadiriyah and Naqsabandiyah order education was carried out with an educational approach at the micro and macro levels. At the micro level, the development of education is carried out personally and in small groups through a series of rituals such as baiah, dhikr, khataman, and manaqib. Meanwhile, at the macro level, educational development is carried out in an organized and structured manner through educational institutions and order organizations.
Energy Performance Indicator of a Gold Mining Industry in Indonesia Mahandari, Cokorda Prapti; Yamin, Mohamad; Palaloi, Sudirman; Hasan, Muhammad Syukri; Kurniawan, Cucuk
Journal of Applied Science and Advanced Engineering Vol. 2 No. 2 (2024): JASAE: September 2024
Publisher : Master Program in Mechanical Engineering, Gunadarma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59097/jasae.v2i2.41

Abstract

Energy Audit follows ISO 50002 standard had been done on one of gold mining industry in North Maluku, Indonesia that has operations involving two underground mining. As part of the energy audit report, this paper present energy sources and energy consumption, specific energy consumption cum energy intensity of the plant.  Energy audit methods include energy audit planning, opening meeting, data collection, measurement plant, siti visit, data analysis, energy audit reporting and closing audit. Most electricity data were collected from the SCADA system which the company use to monitor and control maximum electricity demand. Arithmetic mean, energy intensity equation and visual graphic methods had been employed to investigate energy profile and energy performance indicator of this gold mining. As the site located far away from the national grid then four Diesel powerhouses generates the electricity. Fuel consumption for four unit mainly electricity generation, transportation, heavy duty and supporting are investigated thoroughly. Since Diesel powerhouse occupy more than 80 % fuel consumption then the Diesel power houses is the Significant energy users (SEU). Further study SEC and on heat rate of the powerhouse is carried out and benchmarked with the IEA. It shows that the powerhouses have excellent performance as SEC and heat rate is lower than typical powerhouses. The powerhouse distributed electricity to four different unit, Kencana Underground Mining, Toguraci underground mining, Mill and Merril Crowe Processes and Supporting Unit. Among these units, Togurachi under gound mining with its uniqueness become the highest electricity end user as expected. It covers more than 40 % electricity consumption resulting quite high total energy intensity by ore milled which is approximately 475 kWh/ton (1710 MJ/ton) and energy intensity by Dore bullion is 1,420 kWh/ounce (5108 MJ/oz).
Ride Test on Vehicles Travelling Over Speed Bumps: Simulation with CarSim Software Lenahatu, Adetia; Yamin, Mohamad
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 6, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i2.26135

Abstract

This study explores the effects of different speed bump geometries—flat-topped, sinusoidal, and parabolic—on vehicle dynamics and ride comfort using CarSim simulations. The analysis focuses on key parameters such as vertical forces on the suspension, vertical acceleration, and the wheel surface adhesion index. The results show that flat-topped bumps generate the highest vertical forces, reaching peaks of up to 6,000 N on the front suspension, leading to increased discomfort. Sinusoidal bumps, in contrast, generate smoother transitions, with vertical forces peaking at approximately 3,500 N, improving ride comfort. At vehicle speeds of 30 km/h, the vertical forces on the suspension increase significantly, with flat-topped bumps reducing the wheel surface adhesion index to as low as 0.6, indicating a higher risk of wheel slip and compromised vehicle stability. In contrast, sinusoidal bumps maintain a more favorable adhesion index of 0.85 at similar speeds. These reductions in adhesion elevate the risk of loss of control, especially at higher speeds. The findings suggest that adaptive suspension systems, capable of adjusting damping and stiffness based on the bump geometry and vehicle speed, would enhance ride quality and stability. Additionally, smoother bump designs, such as sinusoidal profiles, are recommended to reduce the impact on vehicle dynamics, particularly in urban environments. These insights contribute to improving both vehicle design and road safety, ensuring safer and more comfortable driving experiences.
THE EFFECTS OF EXERCISE MODELS ON HEMATOLOGICAL PROFILE AND MEET PHYSICAL QUALITY IN GARUT SHEEP Permana, Ronnie; Yamin, Mohamad; Priyanto, Rudy; Gunawan, Asep; Astuti, Dewi Apri
Jurnal Kedokteran Hewan Vol 14, No 4 (2020): December
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v14i4.16035

Abstract

The objective of this study was to evaluate the effect of exercise levels on the hematological and metabolical status, and carcass quality of Garut sheep. In total 24 of Garut sheep used in this study. The levels of exercise contain three treatments namely non exercise, semi exercise and exercise. Blood collection through the jugular vein of sheep samples was carried out at the end of the study, using a 5 mL EDTA tube to measure the haematological condition of the animal sample. Likewise, collecting muscle samples to determine the physical quality of meat.The data was analyzed by analysis of variance and continued by Duncan test for a post hoc test. The results showed that the models of exercise were not significantly (P0.05) affected to hematological level and also carccas quality including juiceness, tenderness, drip loss and water holding capacity. Organoleptic sensory using semiexercise was more favourable meat compare to exercise and non exercise. While for the colour of meat, non exercise treatment was significantly (P0.05) affected to the colour of meat compare to exercise and semi exercise. Furthermore the semi exercise was the best treatment to produce fresh taste meat with good sensory characteristic.
Islamic Religious Education in the Era of Revolution 4.0 (Descriptive Study of Bondowoso 2 Public High School) Yamin, Mohamad; Yusuf, Lucky Damara
Riwayat: Educational Journal of History and Humanities Vol 8, No 2 (2025): April
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jr.v8i2.44717

Abstract

Disruptive innovation presents many innovations without established organizations realizing it but is felt to be disrupting the activities of the old system order and destroying the current system. This has an impact that is not simple. It impacts all aspects of human life. Included in this is education. Putting on a competition literation on every semester.Providing reading park.Providing class library.make library as central activity.Putting on a literation activity based on 4.0. Evolution is done once a week that is Meeting Teachers Subject (MGMP) Study of Bondowoso 2 Public High School). This type of experiment use approach qualitive with the deskriptif type.Experiment done in Study of Bondowoso 2 Public High School). The indikator Literation Education of Islamic Religion of student in Study of Bondowoso 2 Public High School)High School Surabaya in the era 4.0 is that; Know and knowing all the book that was recommend by school. Writing seriously and evaluating in a manner of critical from the writing that is made and giving mean for teks that ias read and made can show the literation activities that can be accsess in a manner of communal (in a manner of wide Effort of teacher Education Islamic Religion to improve Literation Education Islamic Religion student from in Study of Bondowoso 2 Public High School) in the Era 4.0 is: Entering literation to the subjects trough Plan Implementation Studying. Reading 15 minutes before KBM startedKeywords: Religious Education, The Era of Revolution 4.0, Study of Bondowoso 2 Public High School
Numerical simulation of the effect of synthetic jet actuators on aerodynamic performance in high-lift device configurations Yamin, Mohamad; Apriyadi, Kukuh Ivan; Firmansyah, Riyan
Jurnal Polimesin Vol 23, No 2 (2025): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i2.6208

Abstract

The aviation industry faces significant challenges in reducing environmental impacts, particularly fuel consumption and  noise pollution.  To  address  these  issues,  various  aerodynamic optimization and flow control technologies have been developed to enhance aircraft efficiency. One promising approach is Active Flow Control (AFC), particularly in wing-flap configurations. However, cambered flaps can induce flow separation, leading to increased drag and reduced aerodynamic performance. This study investigates the application of AFC using Zero Net Mass Flux (ZNMF) to mitigate flow separation and improve aerodynamic efficiency. Numerical simulations were conducted using ANSYS Fluent, employing the Delayed Detached Eddy Simulation –Spalart-Allmaras (DDES-SA) turbulence model to accurately capture flow separation and vortex structures. The research explores a novel ZNMF geometry, analyzing different frequency and velocity parameters to determine the optimal settings for suppressing flow separation. The results demonstrate that  the  Synthetic  Jet  Actuator  (SJA)  significantly enhances aerodynamic efficiency by optimizing the CL/CD  ratio through drag reduction without major lift loss. Optimal performance is achieved at frequencies of 150–300 Hz and jet velocities of ≥150 m/s, stabilizing airflow, reducing flow separation, and suppressing vortex formation. At an AOA of 0°, a frequency of 100 Hz provides the greatest CL reduction, while at an AOA of 10°, frequencies of 100–250  Hz  substantially improve  the  CL/CD   ratio.  This  study confirms that SJA is an effective strategy for drag reduction and aerodynamic optimization. These findings highlight its potential to improve aircraft performance, reduce fuel consumption and CO₂ emissions, and contribute to more sustainable aviation technology
Ambidexterity Strategy, Digital Innovation for Street Vendor Sustainability in the Creative Economy Era Yamin, Mohamad; Saleh, Nino Nopriandi; Mukhaira, Inna
Jambura Science of Management Vol 8, No 1 (2026): Jambura Science of Management - January 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37479/jsm.v8i1.34220

Abstract

Purpose: This research aims to identify an effective strategy for sustaining street vendor entrepreneurship in Tangerang City, particularly by integrating ambidexterity and digital innovation with approaches to economic, technological, organizational, and environmental factors relevant to the challenges entrepreneurs often face.Design/Methodology/Approach: In this research, researchers tested models and hypotheses using the PLS technique. PLS (Partial Least Squares) analysis consists of two parts: outer model and inner model evaluation. Using a survey or questionnaire with 200 respondents, street vendors in Cipondoh District, Tangerang City. Data was collected for 13 days. Data was collected using purposive sampling.Findings: The research results show that the Ambidexterity Strategy and Digital Innovation play significant roles for the Street Vendor Sustainability Business in Cipondoh, Tangerang. Economic, Environmental, and technological factors significantly affect the Ambidexterity Strategy. In contrast, Organizational Factors have an impact but do not significantly impact the Ambidexterity Strategy for Street Vendors in Cipondoh, Tangerang.
Co-Authors Alfasha, Muhammad Zidan Andewi Suhartini, Andewi Apriyadi, Kukuh Ivan Ariandi, Rian Dwi Asep Gunawan Berliana Nova, Chairunisa Cokorda Prapti Mahandari DEWI APRI ASTUTI Erni Haryanti Fadlil Munawwar Manshur Firmansyah, Riyan Fitri Meliani, Fitri Giyats, Ahmad Fakhri Hadi, Nuril Haryadi, Deni Hasan Basri Hasan, Muhammad Syukri Indriyati, Feni Jaelani, Toniyah Khalis, Muhana Kurniawan, Cucuk Laratiwi, Bella Novia Lenahatu, Adetia Mahandari, Cokorda P. Mukhaira, Inna Mumtaz, Mega Maulida Nashirudin, Hamzah Ali Natsir, Nanat Fatah Ningsih, Tiara Setia Nurcholis Nurcholis Permana, Sulaksana Prasetyo, Mustafa Dwi Putra, Andrian Putranto , Muhammad Naufal R. Iis Arifiantini Ramadhan, Rasyid Ridho Ronnie Permana Rudi Irawan Rudianto, Haris Rudy Priyanto Saleh, Nino Nopriandi sudirman palaloi Suharto Suharto Tri Mulyanto Wahyu Kurniawan Warliman, Wadli Yaqien, Angga Ainul Yusuf, Lucky Damara