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Inventa: Journal of Science, Technology, and Innovation
Published by CV SCRIPTA INTELEKTUAL MANDIRI
ISSN : 31233147     EISSN : 31233155     DOI : 10.65310
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Inventa: Journal of Science, Technology, and Innovation is a peer-reviewed scientific journal that focuses on the dissemination of high-quality research in the fields of science, technology, and innovation. It serves as an open platform for researchers, engineers, practitioners, and academics to publish original studies, applied research, and theoretical developments that advance scientific and technological knowledge. The journal welcomes manuscripts covering various topics, including natural and applied sciences, engineering and technology, information and communication technology, industrial innovation, renewable energy, and environmental studies. All submissions undergo a rigorous double-blind peer-review process to ensure academic integrity, originality, and scientific excellence. Inventa is published triannually in April, August, and December, promoting innovative, sustainable, and forward-looking contributions that support scientific progress and technological advancement at both national and international levels.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 69 Documents
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Analisa Kekuatan Mesin Bending Hidrolik Tipe YSD-HSDY/HPPTK 200/3000 di Koperasi Tegal Manufaktur Indonesia Ikhtamul Fajri; M.Fajar Sidik
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/pf38wd76

Abstract

This study presents an empirical analysis of the structural strength, operational performance, and reliability characteristics of a hydraulic bending machine type YSD-HSDY/HPPTK 200/3000 under real industrial conditions at Koperasi Tegal Manufaktur Indonesia. The research integrates field observation, direct measurement, and mechanical modeling to evaluate force distribution, deformation behavior, and system response during bending operations. Experimental data were collected through variations in material thickness, bending angles, and hydraulic pressure to examine their influence on machine capacity and output consistency. The results indicate that the machine demonstrates stable force generation within its operational threshold, although deviations emerge under increased loading intensity and frequency. Analytical findings reveal that stress concentration occurs at critical structural points, contributing to gradual performance degradation and reduced precision. Reliability assessment further shows that repeated operational cycles significantly affect hydraulic stability and component wear, leading to increased deviation in bending accuracy. The integration of empirical and analytical approaches provides a comprehensive understanding of machine behavior, offering a robust basis for performance optimization, predictive maintenance, and enhanced operational safety in industrial bending applications.
Pengaruh Suhu Pemadatan terhadap Stabilitas Marshall pada Aspal Hibrida Self-Healing Hidrofobik Yosef Aryawanda; Ratnawulan, Ratnawulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/5b123x61

Abstract

This study examines the influence of compaction temperature on Marshall stability in hydrophobic self-healing hybrid asphalt using a quantitative laboratory experimental approach. The asphalt mixture was formulated with penetration grade 60/70 binder and standard aggregates, modified by nanosilica to enhance hydrophobic characteristics and Escherichia coli as a biological self-healing agent. Compaction temperatures of 180°C, 185°C, and 190°C were evaluated alongside a 150°C control sample without modification. The results indicate a non-linear relationship between temperature and mechanical performance, with stability increasing to an optimum condition at 185°C before declining at higher temperatures. This trend reflects improved densification and aggregate interlocking at moderate temperatures, while excessive heat reduces binder effectiveness due to softening. Volumetric parameters further demonstrate that optimal temperature conditions contribute to balanced void distribution and improved binder efficiency. Additionally, the hybrid system exhibits multi-scale interactions between nano-modification and microbial healing mechanisms, enhancing durability and resistance to environmental factors. These findings emphasize the importance of precise thermal control in optimizing both structural integrity and functional performance of advanced asphalt materials.
Kelebihan dan Kekurangan Teknologi Hidrogen sebagai Energi Terbarukan yang Ramah Lingkungan Bagustianto Adipati; M. Fikri Adrian; Adnan Kurniawan; Rahmat Riski; Tri Prasetia Utama
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/zkcram47

Abstract

The global energy transition necessitates the development of sustainable and low-emission energy systems, positioning hydrogen as a strategic energy carrier with significant potential. This study aims to critically evaluate the advantages and limitations of hydrogen technology as an environmentally friendly renewable energy source through a systematic qualitative synthesis approach. The findings indicate that hydrogen offers key advantages, including high energy density by mass, operational zero-emission characteristics, and flexibility in production from diverse renewable sources. However, these strengths are constrained by systemic challenges such as low energy conversion efficiency, complex and costly infrastructure for storage and distribution, and environmental impacts that depend heavily on production pathways. Lifecycle-based analysis reveals that hydrogen’s sustainability is conditional upon the use of renewable energy inputs. Furthermore, policy frameworks, green financing mechanisms, and technological innovations in materials and catalysis are essential to enhance feasibility and scalability. The study concludes that hydrogen should be positioned as a complementary component within integrated energy systems, requiring multidimensional evaluation to support effective and evidence-based energy transition strategies.  
Pengaruh Komposisi Nanosilika Terhadap Kinerja Mekanik Aspal Hibrida Berbasis Mikroorganisme Muhamad Khalid Khadafi; Ratnawulan, Ratnawulan; Riri Jonuarti; Syafri, Syafri
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/d4fyrk95

Abstract

The decline in pavement performance due to increasing traffic loads necessitates the development of advanced materials beyond conventional asphalt mixtures. This study investigates the effect of nanosilica composition on the mechanical performance of hybrid Asphalt Concrete-Wearing Course (AC-WC) modified with Escherichia coli as a biomineralization agent. The mixture was prepared using a fixed asphalt content of 6% and nanosilica variations of 0%, 3%, 5%, and 9% by asphalt weight, combined with bacterial concentration of 10³ cells/mL. Marshall testing was conducted in accordance with Bina Marga 2018 Revision 2 specifications. The results indicate that nanosilica addition leads to a gradual decrease in density from 2.472 to 2.453 g/cm³, while significantly increasing stability from 1,094 kg to 1,560 kg. Flow values ranged between 3.90 and 4.20 mm, with higher compositions exceeding specification limits. The 5% nanosilica composition demonstrated the most balanced performance across all parameters. The synergistic interaction between nanosilica and bacterial activity enhances interparticle bonding, offering a promising approach for developing durable and sustainable asphalt materials.
Analisis Hubungan Komposisi Unsur SiO₂ pada Material Tuf Vulkanik Lampung di Hatta Bakauheni Menggunakan Portable XRF sebagai Metode Pendukung Kemagnetan Batuan dalam Menentukan Sifat Magnetiknya Novia Deswira; Hamdi Rifai; Ahmad Fauzi; Harman Amir
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/ezzxgs33

Abstract

This study investigates the relationship between SiO₂ composition and magnetic properties of Lampung Tuff from Hatta Bekauheni using an integrated approach combining rock magnetism and portable geochemical analysis. Magnetic susceptibility measurements were conducted using a Bartington MS2B sensor at low and high frequencies to determine χlf and χfd (%), while elemental composition was analyzed using Portable X-Ray Fluorescence (Portable XRF). The results indicate that all samples exhibit ferrimagnetic behavior, reflecting the presence of magnetic minerals such as magnetite or titanomagnetite with varying concentrations and grain sizes. The χfd (%) values suggest a mixture of superparamagnetic and coarser grains, indicating heterogeneous depositional and post-depositional processes. SiO₂ content varies among samples, representing local geochemical differentiation of volcanic material. However, regression analysis shows a very weak correlation between SiO₂ and magnetic parameters, as indicated by low coefficients of determination. These findings demonstrate that magnetic properties are primarily controlled by mineralogical factors rather than silica composition. The integration of magnetic susceptibility and Portable XRF provides an efficient, non-destructive framework for comprehensive volcanic material characterization.  
Pengaruh Pencelupan Komposit PDMS-Silika Sekam Padi-Graphene Oxide terhadap Resistansi Isolasi Listrik Sarmila Yetria; Ratnawulan, Ratnawulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/6vz85v47

Abstract

This study analyzes the effect of varying the number of dips on the electrical insulation resistance of PDMS–rice husk silica–graphene oxide composites using a multi-step dip-coating experimental approach. The composite was synthesized using a polydimethylsiloxane matrix combined with biomass silica extracted from rice husks and graphene oxide as a multifunctional filler to enhance the material’s dielectric stability. Dipping variations were performed 1, 3, 5, and 7 times on a glass substrate, then tested using a High Voltage Insulation Tester at 10 kV under dry and wet conditions. Test results showed that the highest insulation resistance was obtained with a single immersion, at 420 GΩ under dry conditions and 100 GΩ under wet conditions. Increasing the number of immersions caused a decrease in resistance due to structural inhomogeneity, filler agglomeration, and an increase in micro-conductive pathways within the composite layer. Wet conditions accelerate the decline in insulation performance because water adsorption on the coating surface increases local conductivity. The integration of PDMS, rice husk silica, and graphene oxide demonstrates high potential as a biomass-based electrical insulator coating with stable dielectric characteristics in humid environments.  
Pengaruh Jumlah Lapisan Komposit PDMS-Silika Sekam Padi-Graphene Oxide terhadap Sifat Resistansi Isolasi Listrik Annisa Eka Putri; Ratnawulan, Ratnawulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/k3ea2a42

Abstract

This study analyzes the effect of the number of layers in PDMS–rice husk silica–graphene oxide composites on electrical insulation resistance under dry and wet conditions using a multilayer structure-based experimental approach. The composites were fabricated using the spin-coating method on glass substrates with variations ranging from 1 to 5 layers and characterized using XRD, FTIR, and SEM to evaluate the relationship between morphology, filler distribution, and the material’s electrical behavior. The results show that an increase in the number of layers causes significant changes in the interface configuration and the density of filler distribution. Under dry conditions, the insulation resistance decreased from 250 GΩ to 70 GΩ due to increased opportunities for the formation of internal conduction pathways and percolation effects between graphene oxide particles. Conversely, under wet conditions, the resistance increased from 90 GΩ to 200 GΩ because the multilayer structure formed tortuous diffusion pathways that effectively hindered water penetration and ionic transport. These characteristics indicate that the multilayer design plays a crucial role in controlling the electrical stability of polymer-based nanocomposites for high-voltage insulation applications.  
Optimalisasi Pelayanan Prima Melalui Konsep A6 di Pelabuhan Penyeberangan Torobulu Ferima, Ferima; Maudhy Satyadharma; Muhammad Yazir Jabbar; Hado, Hado; Muhamad Rajulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/qjcvj860

Abstract

This study aims to analyze the optimization of excellent service through the application of the A6 concept to the service system at the Torobulu Ferry Port in the context of public transportation services based on user experience. The study employs a qualitative-descriptive empirical approach through operational observation, in-depth interviews, documentation, and thematic analysis of the dimensions of attitude, ability, attention, appearance, action, and accountability. The results indicate that service quality has shown positive improvements in service attitude, operational technical ability, and service flow management. Major challenges remain in inconsistent service communication during peak periods, limited digitalization of information, a lack of proactive approaches to user needs, and an underdeveloped public satisfaction-based evaluation system. The study also found that service accountability remains administratively oriented and has not been fully integrated with participatory oversight mechanisms. The integration of service technology, the strengthening of an adaptive service culture, and the development of a user-experience-based evaluation system are strategic factors in realizing professional, responsive, transparent, and sustainable ferry services.  
Analisis Gugus Fungsi Terhadap Perbandingan Metode Pencampuran dan Metode Pengolesan  Bakteri E.Coli Pada Aspal Stefi Monika; Ratnawulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/xx88v465

Abstract

This study investigated the functional group transformation of asphalt modified using Escherichia coli through mixing and coating methods as a biological self-healing approach for pavement materials. The experimental research was conducted under controlled laboratory conditions using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), and hydrophobicity analysis to evaluate chemical, morphological, and surface performance changes. The mixing method promoted dominant internal interactions within the asphalt matrix, indicated by increased O–H functional groups and homogeneous bacterial distribution. In contrast, the coating method generated stronger surface reactions characterized by higher C–O intensity, enhanced biomineralization activity, and localized CaCO3 formation on the asphalt surface. SEM observations revealed that the coating method formed denser biofilm structures, contributing to improved hydrophobicity and accelerated microcrack healing performance. Comparative analysis demonstrated that bacterial application mechanisms significantly influenced asphalt chemical evolution and engineering behavior. The findings indicate that biologically modified asphalt using Escherichia coli possesses considerable potential for sustainable, adaptive, and self-healing pavement systems through optimized bacterial treatment strategies.
Dampak Keberadaan Transportasi Online terhadap Pendapatan UMKM Kuliner di Kota Kendari Kemal Jusra; Sylsiani Mursalim; Maudhy Satyadharma; Muhammad Yazir Jabbar; Hado, Hado; Muhamad Rajulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/nhz3am86

Abstract

The rapid expansion of digital transportation platforms has transformed the operational landscape of culinary micro, small, and medium enterprises (MSMEs) in urban economies. This study aims to analyze the effect of online transportation services on the income performance of culinary MSMEs in Kendari City within the context of platform-based digital economic transformation. The research employed a quantitative empirical approach using survey data collected from 65 culinary MSME actors integrated with online transportation applications for at least six months. Data were analyzed using validity and reliability testing, simple linear regression, hypothesis testing, and coefficient of determination analysis. The findings reveal that online transportation exerts a positive and statistically significant influence on MSME income, indicated by a regression coefficient of 0.688 and a significance value below 0.05. The coefficient of determination demonstrates that 54.8% of income variation can be explained by the existence of online transportation services. The study also identifies digital adaptation capability, innovation capacity, consumer loyalty, and resilience to platform competition as critical determinants influencing MSME sustainability in the digital economy ecosystem.

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