Article Per Year (5 Year)
p-Index From 2021 - 2026
3.453
P-Index
This Author published in this journals
All Journal International Journal of Electrical and Computer Engineering Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Keteknikan Pertanian Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin JSI (Jurnal sistem Informasi) Universitas Suryadarma Infotekmesin Teaching and Learning Journal of Mandalika (Teacher) Jurnal Sosial dan Teknologi Indonesian Journal of Engagement, Community Services, Empowerment and Development (IJECSED) Jurnal Teknik Industri Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Journal of Scientech Research and Development Bhinneka Multidisiplin Journal Jurnal Karya untuk Masyarakat (JKuM) Science Get Journal
Rismen Sinambela
Universitas Kristen Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : Science Get Journal

 1 
Using Biotechnology to Make Biofuels from Algae as Renewable Energy Rismen Sinambela; Ilham Samanlangi
Science Journal Get Press Vol 1 No 4 (2024): October, 2024
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v1i3.80

Abstract

According to research published in the Journal of Applied Phycology, algae have the ability to produce biofuels with five times higher energy efficiency compared to soybean plants, making it a highly efficient and sustainable option for renewable fuels. The goal of this research is to use biotechnology to create biofuels from algae as a renewable energy. This study used a laboratory experimental design with a quantitative approach. Population: Microalgae or green algae that have high potential in lipid production, such as Chlorella vulgaris or Spirulina platensis, which are commonly used in biofuel research. Sample: Several species of algae were selected to test their effectiveness as biofuels, including genetically engineered species and natural species as a comparison. The results of the ANOVA analysis showed significant differences in lipid levels between treatment groups. The results of the T/Post-hoc test confirmed that the genetically engineered species had higher lipid levels, supporting the efficiency of biofuels. The regression results showed a strong positive correlation (R² = 0.68), which supports other studies that found that microalgae can produce biomass in a relatively short time with a controlled environment, making it efficient for large-scale biofuel production. The conversion efficiency of lipids to biofuels reached 85.5%, indicating that the transesterification method used in this study is very effective in converting algae lipids to biodiesel. The use of biotechnology in the production of biofuels from algae has great potential as an efficient and sustainable renewable energy source.
Mass Spectrometry-Based Purity Assessment of Hydrogen from Different Production Pathways: Compliance Evaluation with ISO 14687:2019 Standards Rismen Sinambela
Science Journal Get Press Vol 2 No 4 (2025): October, 2025
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v2i4.272

Abstract

The global transition toward low-carbon energy has positioned hydrogen (H₂) as a key renewable fuel, particularly for applications in fuel cells that require ultra-high purity. Ensuring hydrogen quality is essential to prevent catalyst poisoning and system degradation, as defined in ISO 14687:2019 standards. This study presents a simulation-based analysis of hydrogen purity using a Gas Chromatography–Mass Spectrometry (GC–MS) modeling approach to evaluate three production pathways: green hydrogen (from electrolysis), grey hydrogen (from steam methane reforming), and a fuel cell–grade feedstock.The simulation predicts impurity profiles such as O₂, N₂, CO, CO₂, CH₄, sulfur compounds, and water vapor, comparing each with ISO threshold limits. Results indicate that green hydrogen generally complies with ISO standards, while grey hydrogen exceeds CO₂ and sulfur limits. The fuel cell–grade sample shows near-complete conformity due to simulated purification processes such as pressure swing adsorption.These findings highlight that analytical modeling can effectively predict hydrogen quality and compliance potential across different production routes. The study emphasizes that advancing hydrogen technology requires not only cleaner production methods but also reliable analytical simulations to support quality assurance and sustainability in future hydrogen economies.
Engineering Structure and Stability of Next-Generation Perovskite Materials for Optimization of Photovoltaic Solar Cell Efficiency Anugrah; Rismen Sinambela
Science Journal Get Press Vol 3 No 1 (2026): January, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i1.371

Abstract

Perovskite solar cells (PSCs) are a promising next-generation photovoltaic technology due to their high power conversion efficiency (PCE) and facile fabrication. However, structural instability, environmental sensitivity, and operational degradation limit their practical applications. This study investigates the effects of compositional and interfacial engineering on PSC performance and stability. Three perovskite types mixed-cation, interface-modified, and anti-perovskite were fabricated and characterized in terms of crystallinity, morphology, optical absorption, and electrical performance. Mixed-cation perovskites exhibited superior crystallinity, homogeneous morphology, broad optical absorption, the highest PCE (21.0 ± 0.3%), and 86.7% efficiency retention after 500 hours. Interface-modified PSCs enhanced Voc and fill factor, whereas anti-perovskites showed the lowest performance due to poor crystallinity and secondary phase formation. These findings indicate that combining cation/anion compositional engineering with interface modification is an effective strategy for developing high-performance and stable PSCs, offering insights for next-generation photovoltaic device optimization
Study on Material Innovation and Electrochemical Performance in Solid-State Battery Technology for Sustainable Energy Applications Herlina Rahim; Rozlinda Dewi; Venny Yusiana; Rismen Sinambela
Science Journal Get Press Vol 3 No 1 (2026): January, 2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i1.373

Abstract

Solid-state batteries (SSBs) have gained strong attention for their higher safety, greater energy density, and improved electrochemical stability compared to liquid-electrolyte lithium-ion batteries, although challenges remain in optimizing ionic conductivity, interfacial resistance, and cycling stability. This study investigates the synthesis, structural characteristics, and electrochemical performance of the argyrodite solid electrolyte Li₆PS₅Cl (LPSC), produced via high-energy mechanical milling and integrated into a prototype SSB using a Li-metal anode and NMC811 cathode. XRD analysis confirmed the formation of the cubic argyrodite phase, while SEM revealed a homogeneous particle morphology conducive to efficient ion transport. Electrochemical impedance spectroscopy (EIS) showed an ionic conductivity of 1.87 × 10⁻³ S/cm at 25°C, which increased to 3.41 × 10⁻³ S/cm after annealing at 550°C. Galvanostatic cycling at 0.1C demonstrated stable capacity retention of 92.5% after 50 cycles, indicating strong interfacial contact between the LPSC electrolyte and NMC811 cathode. Comparative evaluation with recent SSB literature shows that the optimized LPSC electrolyte achieves performance levels comparable to state-of-the-art sulfide-based electrolytes due to improved crystallinity and reduced grain-boundary resistance. These results highlight the potential of mechanically milled LPSC as a promising solid electrolyte for next-generation SSB applications.
Co-Authors Aidil, Muhamad Aldul Rahman Anifatul Faricha Anton Supriadi Wibowo Anugrah Denis Denis Flourentina Dwiindah Pusparini Fuad, Ahsanul Gani, Alcianno G Gema Parasti Mindara Herlina Rahim Ilham Samanlangi Inna Novianty Ito Khikmatulloh Leonard Lisapaly Martua Manik Muhammad Achirul Nanda Muryan Awaludin Nadeak, David Ryanto Nadeak, Omsar Rudyanto Nurulhaq, Muhammad Iqbal Pradeka Brilyan Purwandoko Purba, Herianto A S Retno Indriyati K. Rozlinda Dewi Serepina Tiur Maida Sholihah, Walidatush Simanjuntak, Suganda P Sinambela, Pahala Sitinah, Sitinah Sitti Wardiningsih Sitti Wardiningsih Suryadi, Fransiskus Xaverius Taran, Nober Tateng Sukendar Tri Hannanto Saputra Utsman, Fajar Venny Yusiana Widiarto, Indra Yosep Hendriyana Zulkarnaini, Andri