12 articles in this issue
Faqih Fadillah,Heru Suryanto,Suprayitno Suprayitno
Fused deposition modeling of 3D printing is the process of making workpieces or parts by adding filaments to each layer. Some indicators of a high-quality product of 3D printing are the precisions dimensions, the surface roughness, and tensile strength. T... see more
Fajri Ashfi Rayhan,Andika Masrul,Arya Khairullah Akbar,Bima Anugerah Putra
A stepped planing hull, also known as a step hull, is a hull modification that reduces the wetted surface area. Although this type of hull has proven effective in several ships, it is still rarely used. The step hull possesses numerous advantages that mak... see more
Sudirman Rizki Ariyanto,Ata Syifa' Nugraha,Wahyu Robby Cahyadi,Yelma Dianastiti,Muhammad Yandi Pratama
Increased exhaust emissions from motor vehicles have become a major concern in efforts to reduce air pollution. One developed solution is the use of transition metallic catalytic converter (TMCC) technology in vehicle exhaust systems. This study aims to c... see more
Heru Suryanto,Aminnudin Aminnudin,Redyarsa Dharma Bintara,Abyan Farras Putra,Fikri Munif Nashrullah,Joseph Selvi Binoj,Nithin Panicker
In many polymer compounds, Polylactic Acid (PLA) is a polyalcohol material that has the most potential material which is potent for biological degradation. They have been applied as filaments in additive manufacturing. The PLA properties can be modified b... see more
Taufiq Mahsuli,Aisyah Larasati,Aminnudin Aminnudin,Jibril Maulana
Indonesian pineapple production can reach 200 tons per day; however, pineapples generate a significant amount of waste. Pineapple peel waste can be used to make membranes. Composite membranes containing TiO2 have dense properties, low porosity, and increa... see more
Dewi Puspitasari,Poppy Puspitasari,Mazli Mustapha,Turnad Lenggo Ginta
The interest in metallic foam is increasing since their cellular structures have a unique combination of properties such as high stiffness, low density, lightweight, high specific strength, and thermal insulation. Commonly, the performance of metallic foa... see more
Lulut Alfaris,Ruben Cornelius Siagian,Aldi Cahya Muhammad,Budiman Nasution
This research aims to develop a mathematical method for expressing the Laplace operator in cylindrical coordinates and applying it to solve heat conduction equations in various scenarios. The method commences by transforming Cartesian coordinates into cyl... see more
Kennie Abraham Lempoy,Nita C.V. Monintja,Arwanto M.A. Lakat
The abundant availability of alternative energy sources forms the fundamental foundation for rural energy development. In particular, renewable energy sources are indispensable in rural areas due to their eco-friendly nature and widespread accessibility, ... see more
Abid Fahreza Alphanoda,Eko Prasetyo,Wisnu Broto
Photocatalytic is considered a deadlock-breaking technology for renewable energy and lowering environmental pollutants. Photocatalytic efficiency efforts are improved by activating the photocatalyst to introduce an external magnetic field. This review hig... see more
Susi Marianingsih,Farhanna Mar’i,Hendry Y. Nanlohy
Machine learning technology can distinguish the relationship between engine characteristics and performances. Therefore, the goal of the present work is to predict the performance parameters of a single-cylinder 4-stroke gasoline engine at different ignit... see more
Eprilia Trikusuma Sari,Nandang Mufti,Anissa Chairani Alfin Nadhira,Hari Wisodo,Markus Diantoro
Photoelectrochemical (PEC) is a new renewable energy technology that converts H2O into hydrogen and oxygen gas with the help of sunlight. A photoelectrochemical cell device consists of three main components, one of which is the photoanode. One of the mate... see more
IGN Nitya Santhiarsa,I Gusti Bagus Wijaya Kusuma,I Gede Artha Negara
Composites comprising two or more distinct materials are fabricated to enhance the mechanical properties of the constituent materials. A common approach for generating composites is vacuum infusion. This technique enables the infusion of two materials uti... see more