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Science and Technology Indonesia
Scopus
ISSN 2580-4405 · Magister Program of Material Sciences, Graduate School of Universitas Sriwijaya · 696 artikel di indeks
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Artikel Jurnal
Development of Cassava Starch-Based Bioplastic Films Reinforced with Jerbung Shrimp Waste Powder (Fenneropenaeus merguiensis de Man)
Plastic waste is a major environmental concern because of its long-term persistence and slow degradation under environmental conditions. Bioplastics derived from renewable resources offer a potential alternative to conventional petroleum-based plastics. This study evaluated cassava starch-based…
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Artikel Jurnal
On the Minimum Coprime Number of Some Graphs
Let G be a finite simple graph. A coprime labeling of G is an injective assignment of positive integers to the vertices such that adjacent vertices receive relatively prime labels. The minimum coprime number of G, denoted by pr(G), is the smallest integer k for which G admits a coprime labeling…
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Artikel Jurnal
Physicochemical Characterization of Spray-Dried Morinda citrifolia Extract Microcapsules Using an Alginate-Chitosan-STPP System
Scopoletin, the primary bioactive marker of Morinda citrifolia L. with antihyperlipidemic activity, is susceptible to thermal and oxidative degradation during processing and storage. Despite the established role of microencapsulation in protecting herbal bioactives, studies on spray-dried…
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Artikel Jurnal
Integrated Cellular and Molecular Interaction Analysis of Turmeric and Black Rice Bran Extract in HeLa Cells as a Potential Anticancer
Cervical cancer continues to be a leading cause of female mortality due to multidrug resistance therapy associated with EGFR overexpression and evasion of apoptosis. Turmeric and black rice bran are recognized for their potential anticancer properties; however, the combined effects of these…
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Artikel Jurnal
Sustainable Fabrication of Banana Pseudo-stem (Musa paradisiaca L.)-derived ZnO/Carbon Composite as a Photo-antibacterial Agent
Bacterial infections and antimicrobial resistance (AMR) represent critical global health challenges, necessitating sustainable antibacterial alternatives. This study presents the hydrothermal synthesis of ZnO nanoparticles integrated with banana pseudo-stem-derived carbon (BPS-C) nanocomposite as a…
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Artikel Jurnal
The Power of Interpolation Effects on SARIMA and LSTM: An Indonesia Domestic Forecasting Case Study
In regional economic planning, the accurate prediction of domestic tourism demand presents a critical challenge because limited access to historical time series data often causes advanced forecasting models to perform poorly. This study aims to demonstrate how linear interpolation can effectively…
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Artikel Jurnal
Rapid Prediction of Total Gingerol Content and Harvest Age Classification of Fresh Indonesian Red Ginger Using UV-Vis Spectroscopy
Red ginger (Zingiber officinale var. rubrum) is a potential spice commodity widely used in the food and pharmaceutical industries due to its high gingerol content, which has antioxidant, anti-inflammatory, and anticancer properties. This study aims to develop a predictive model for gingerol content…
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Artikel Jurnal
Durability Controlled Hydration Mechanisms of High-Volume FABA-Based Binders with Nano Silica and Silica Fume Modification
High-volume supplementary cementitious materials (SCMs) offer significant potential for reducing clinker consumption and CO2 emissions, but maintaining hydration efficiency and long-term durability remains a major challenge. This study investigated the hydration behavior, microstructural evolution…
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Artikel Jurnal
An Investigation on the Edge-gracefulness of Bubble Sort, Bubble Sort Star, and Kulli-Cycle Windmill Graphs
A fundamental area of graph theory, graph labeling concerns the assignment of integers to the vertices, edges, or both of a graph under specified constraints. One of the many types of graph labeling is edge-graceful labeling. Edge-graceful labeling requires assigning distinct integers from 1 to q…
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Artikel Jurnal
Antibacterial Efficacy of Chitosan Nanoparticles from Musa paradisiaca L. Peel Ethanol Extract against Propionibacterium acnes: Characterization and Identification of the Compounds
Hijau lumut banana peel (Musa × paradisiaca L.) contains bioactive compounds with antibacterial properties and has potential as a natural anti-acne agent. This study aimed to prepare and characterize chitosan-based nanoparticles incorporating hijau lumut banana peel (HLBP) ethanol extract, evaluate…
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Artikel Jurnal
Facile Synthesis of Magnetic ZIF-67@Fe3O4 Composite with Synergistic Properties for Monolayer Adsorption of Pb(II) Pollutants
The development of efficient and easily recoverable adsorbents for heavy metal removal remains a significant challenge in wastewater treatment. In this study, a magnetic ZIF-67@Fe3O4 (ZIFO) composite was successfully synthesized via a simple methanol-assisted in situ method at ambient temperature…
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Artikel Jurnal
Isolation on Unsaturated Fatty Acids from Erminalia catappa L. Seed Oil Using Urea Crystallization Method as A Basic Material for Dihydroxy Octadecanoic Acid
Dihydroxyoctadecanoic acid (DHOA) is a fatty acid-based compound with industrial and cosmetic applications. This compound can be synthesized through the chemical transformation of unsaturated fatty acids in vegetable oils, including Terminalia catappa L. (TC) seed oil. In this study, DHOA was…
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Artikel Jurnal
Colorimetric Intelligent Film Based on Carboxymethyl Cellulose/Sodium Alginate Incorporated Black Rice Bran Anthocyanins Co-Pigments for Shrimp Spoilage Monitoring
Colorimetric intelligent film for monitoring shrimp spoilage based on carboxymethyl cellulose (CMC)/sodium alginate (SA) and co-anthocyanin extract derived from natural source was fabricated. Juedanor (JD) rice, a black-purple variety cultivated and consumed in Pattani province, Southern Thailand…
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Artikel Jurnal
Magnetically Recoverable BiVO4/Fe3O4/g-C3N4 Photocatalyst via One-Pot Hydrothermal Synthesis for Visible-Light Methylene Blue Degradation
The development of efficient and recyclable photocatalysts offers promising alternatives for wastewater treatment. However, significant challenges remain, including inefficient light utilization for photodegradation and rapid charge-carrier recombination. This study aims to synthesize a distinctive…
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Artikel Jurnal
Space Weather-Induced Charging in The Garuda-1 Satellite Power Failure
This study investigates the relationship between the geostationary space environment and the Garuda-1 satellite power anomaly that occurred on April 5, 2005. To assess potential anomaly mechanisms, GOES-12 electron and proton flux data, geomagnetic indices, solar wind parameters, and SPENVIS-based…
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Artikel Jurnal
Structural Characterization and Immunogenic Evaluation of a 50 kDa Thyroid Peroxidase Fraction Isolated from Hypothyroid Patient Serum
Thyroid peroxidase (TPO) is a key enzyme involved in thyroid hormone biosynthesis and one of the major autoantigens in autoimmune thyroid disease. However, studies investigating immunoreactive serum-derived TPO-related protein fractions remain limited. This study aimed to isolate an approximately…
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Artikel Jurnal
Effect of Capacity Characterization with C-Rate Variations on ECM Parameter Identification Accuracy in Li-Ion Batteries using the HPPC Method
Accurate battery models are essential for battery management systems to ensure reliable state estimation and performance prediction. However, the influence of capacity characterization conditions on equivalent circuit model (ECM) parameter identification remains insufficiently investigated. This…
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Artikel Jurnal
Rapid and Sensitive Gold Nanoparticles Based Colorimetric Sensor for Mn(II) Ions Detection: A Potential Approach for Urinary Health Monitoring
Manganese (Mn) is an essential trace element, but excessive accumulation in the human body can cause severe neurotoxic effects, making sensitive monitoring in biological fluids such as urine important for public health. This study reports a rapid colorimetric sensor based on…
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Artikel Jurnal
Jacobson-Type Graphs Over Rings: Induced Subgraphs and Isomorphisms
Jacobson-type graphs provide a combinatorial framework for studying structural properties of finite commutative rings. We address two foundational questions: the behavior of these graphs under subring inclusions, and conditions under which distinct Jacobson-type constructions are isomorphic. This…
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Artikel Jurnal
Semi-Analytical and Numerical Solutions of the KdV-BBM Equation Using Differential Transformation Method and iRK-5 Based Method of Lines
The Korteweg-de Vries-Benjamin-Bona-Mahony (KdV-BBM) equation is a fundamental mathematical model describing nonlinear long-wave propagation in dispersive media. This study presents a comprehensive computational investigation employing two distinct and complementary approaches: a tailored…