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AMPLITUDO: Journal of Science & Technology Innovation
Published by Balai Publikasi Indonesia
ISSN : 28306171     EISSN : 28306902     DOI : https://doi.org/10.56566/amplitudo
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture
AMPLITUDO: Journal of Science & Technology Innovation is a scholarly, online international journal that aims to publish peer-reviewed original research result-oriented papers in the fields of science, technology, and Innovative Technology. Submitted papers will be reviewed by the technical committees of the Journal. All submitted articles should report original, previously unpublished research results, and will be peer-reviewed. Articles submitted to the journal should meet these criteria and must not be under consideration for publication elsewhere. Manuscripts should follow the style of the journal and are subject to both review and editing. AMPLITUDO is steered by a distinguished Board of Directors, Researchers, and Academicians and is supported by an international review board consisting of prominent individuals representing many well-known universities, colleges, and the corporate world.
Arjuna Subject : Umum - Umum
Articles 120 Documents
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Development of an E-Module Based on Local Wisdom Integrated Culturally Responsive Transformative Teaching (CRTT) to Improve Students’ Critical Thinking Skills Irma Rahayu Lestari; Aliefman Hakim; Saprizal Hadisaputra
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.610

Abstract

This development research aimed to produce a valid, practical, and effective local wisdom-based chemistry e-module integrated with the Culturally Responsive Transformative Teaching (CRTT) model to improve students’ critical thinking skills. The research followed the 4D model (define, design, develop, disseminate). Data were collected using validation sheets, observations sheets, teacher and student response questionnaires, and pretest-posttest instruments, and analyzed using the N-Gain test. Expert validators assessed the e-module’s validity using a Likert scale, obtaining 0.81 (highly valid), with reliability above 75%. Practicality, assessed through teacher and student questionnaires, reached approximately 85.5% and 84.75%, respectively (highly practical). The N-Gain test for critical thinking skills was 0.71 falling in the effective category. These findings indicate that the developed e-module, teaching module, and assessment instruments are valid, practical, and effective for improving student’ critical thinking skills.
Dose-Response Assessment of Semaglutide: High-Dose-Induced Hepatotoxicity in Male Albino Rats Fatima Noori Sakr; Nedhal Ibrahim Lateff
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.616

Abstract

The objective of this research was to assess the effect of oral semaglutide at doses (low, moderate, and high) on the hepatic enzymes, oxidative stress markers, antioxidants, and histological of the liver in Swiss-albino rats. A total of 40 adult male albino rats were randomly divided equally into four groups. G1 was the control group, and it was given distilled water. G2, G3, and G4 was administered (0.74, 1.67, 3.27 mg/kg) of semaglutide. The substances were given orally using a dosing tube once a day for 30 days. The levels liver enzymes ALT, AST, and ALP, oxidative stress MDA, and antioxidants SOD and GSH, were estimated. The liver was removed for histological examination. The results were shown not statistically significant for liver enzyme levels in G2 and G3 compared to (G1), a significant increase in antioxidants and a significant decrease in MDA were also recorded in G3, and without pathological changes appearing in the liver tissue. While, G4 showed significant increase in liver enzymes and MDA, along with a significant decrease in the level of antioxidant compared to (G1). significant pathological changes, including cellular necrosis, cellular injury, sinusoidal dilation, central venous congestion, hemorrhage, lymphocytic infiltration, and changes in the bile ducts. The low and medium doses showed improvement in biochemical indicators, while the high dose showed hepatotoxicity
Sensor-Based Machine Learning PZEM-004T for Energy Consumption Prediction and Anomaly Detection in Support of Sustainable Energy Efficiency Rafi Aditya Pradana; Sani Muhamad Isa
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.622

Abstract

Increased electricity consumption requires a smart monitoring system that can predict energy usage and detect anomalies early on to improve energy management efficiency. This study aims to integrate machine learning algorithms with PZEM-004T sensor data for energy consumption prediction and time series-based anomaly detection. Sensor data is processed through preprocessing and modeling stages using Long Short-Term Memory (LSTM) and ARIMA for prediction, as well as Isolation Forest and K-Means for anomaly detection. Prediction performance is evaluated using Mean Absolute Percentage Error (MAPE), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE). Based on the test results in Tables 1 and 2, the ARIMA model performed better than the LSTM. This is demonstrated by the consistently lower RMSE and MAE values ​​in both test scenarios. A lower RMSE value indicates a relatively lower deviation from the actual data, while a lower MAE value indicates a smaller average prediction error, resulting in a more accurate energy consumption estimate. The MAPE values for each model configuration are reported in Tables 1, 2, and 3 to support these findings with quantitative evidence.
Real-time Monitoring and Remote Control of Laboratory Furnaces using MQTT and Role-Based Access Control Adilia Getia Haqia Ilmi; Linda Ratna Kholifah; Syada Saleha; Oky Dwi Nurhayati; Agung Budi Prasetijo; Abdul Manab; Andre Rabiula; Edi Saputra; Samratul Fuady; Nazrizawati Ahmad Tajuddin; Nazarudin Nazarudin
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.628

Abstract

The modernization of laboratory infrastructure requires secure, reliable remote monitoring systems to replace inefficient manual supervision. This study presents the design and implementation of a Web-based Supervisory Control and Data Acquisition (SCADA) system for laboratory furnaces, incorporating Proportional-Integral-Derivative (PID) control for precise temperature regulation and the Message Queuing Telemetry Transport (MQTT) protocol for efficient wireless data transmission. A key feature of the proposed architecture is the integration of Role-Based Access Control (RBAC), which systematically classifies user permissions into Administrator, Operator, and Viewer roles to ensure operational safety and prevent unauthorized actions. The system employs an Arduino Uno R4 Wi-Fi as a gateway, interfacing industrial-grade sensors with a React.js and Node.js web platform, enabling real-time monitoring and supervisory control. Performance evaluation demonstrates robust communication stability, achieving 0% packet loss and consistent throughput, with an average latency of approximately 0.5 seconds for remote monitoring and under 0.2 seconds for control commands. While functional testing confirms that the RBAC mechanism effectively manages user permissions, load testing indicates that concurrent, multi-user access on the current shared hosting configuration introduces performance bottlenecks, highlighting a need for dedicated infrastructure to ensure scalability. This research contributes to the field of physics instrumentation by providing a scalable, secure, and cost-efficient architectural model for remote laboratory experimentation within academic environments
Mapping TPACK Competence Among Indonesian Pre-Service Science Teachers: A Multi-Institutional Study Supporting Sustainable Development Goal 4 Novi Ratna Dewi; Prasetyo Listiaji; Erna Noor Savitri
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.632

Abstract

This study aimed to determine the extent to which pre-service science teachers at four universities had mastered the TPACK components and the differences between universities. A comparative descriptive design and a quantitative research method were employed. Data were collected using a 68-item multiple-choice test based on the TPACK framework, which included the following seven core components: CK, PK, TK, PCK, TCK, TPK, and TPACK. The study used a purposive sampling technique, involving 243 pre-service science teachers from the four universities. Descriptive statistics, ANOVA, and the Post Hoc Tukey test were employed to analyze the data and identify significant differences among the universities. The results show that students generally have a 82.1% were categorized as Medium, 14.3% as High, and 3.6% as Low of TPACK proficiency, with none falling into the “Very High” or “Very Low” categories. Major differences were observed in CK, PK, PCK, and TCK, with University 1 attaining the highest overall TPACK scores (though CK was comparatively its weakest component) and University 2 scoring markedly lower. These findings suggest that teacher education programs should strengthen the balanced development of CK, PK, and TK within the curriculum and foster inter-university collaboration to close the TPACK mastery gap identified in this study.
Application of Organic Nanofertilizers as Partial Substitutes for AB Mix in Hydroponic Lettuce Production Resti Fevria; Vauzia Vauzia; Abdul Razak; Silvy Annisa; Santi Diana Putri; Roni Jarlis
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.639

Abstract

Hydroponic lettuce production commonly depends on synthetic AB Mix nutrient solutions, which raises sustainability concerns. This study demonstrates that replacing part of the AB Mix with nano-organic fertilizers derived from Sargassum and Gamal can maintain or even improve crop performance. The results reveal that the P2S formulation (75% AB Mix + 25% Sargassum nano-organic fertilizer) produced the highest growth response, achieving 21.20 cm plant height, 7.80 leaves, and 0.37 g dry weight, while the P3G formulation (50% AB Mix + 50% Gamal nano-organic fertilizer) showed comparable performance, particularly in biomass accumulation. Both treatments showed no significant difference compared to the 100% AB Mix control, whereas the use of 100% nano-organic fertilizer led to significant reductions in all growth parameters. Multivariate analysis further confirmed that P2S and P3G consistently occupied the optimal position in the principal component dimension, indicating their overall superiority in productivity and nutrient efficiency. Nano-organic fertilizers contributed to improved growth performance through enhanced nutrient availability and biostimulant effects, while partial substitution strategy reduced reliance on synthetic fertilizers and utilized locally abundant resources. These findings highlight that integrating nano-organic fertilizers into hydroponic nutrient management can support sustainable crop production, lower environmental impact, and serve as a viable strategy for both coastal and dryland regions depending on material availability. Overall, the study indicates that a partial substitution of AB Mix with nano-organic fertilizers is an effective approach to sustainable hydroponic lettuce cultivation.
Calcium Carbonate (CaCO3) From Pearl Clam Shells (Pinctada maxima) Lombok as Potential Thermochemical Energy Storage (TCES) Material Nazarudin Nazarudin; Frastica Deswardani; Nova Kafrita; Susilawati Susilawati; Rista Mutia Anggraini; Lucky Zaehir Maulana; Fathan Bahfie; Indri Badria Adilina; Richard Walton; Volkan Degirmenci
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.640

Abstract

The study focused on preparing and characterizing Calcium Carbonate (CaCO3) derived from the shells of Lombok pearl oysters (Pinctada Maxima). The objective was to assess the potential of these shells as raw material for Thermochemical Energy Storage (TCES). The research involved calcination pearl oyster shells at different temperatures: 600°C (CKM 1), 700°C (CKM 2), and 800°C (CKM 3). XRD analysis revealed that these samples contained CaCO3 with a calcite phase and a Rhombohedral crystal system (R-3C). The crystalline sizes for CKM 1, CKM 2, and CKM 3 were 53.70 nm, 57.05 nm, and 40.07 nm, respectively. Furthermore, pearl oyster shell samples were combined with Ludox. XRD results for samples subjected to filltering treatment (CKM 4) and heating treatment with a stirrer on a hotplate (CKM 5 and CKM 6) and calcined at 600°C and 700°C also indicated the presence of CaCO3. The crystalline size for CKM 4, CKM 5, and CKM 6 was measured at 55.50 nm, 55.51 nm, and 55.51 nm, respectively. CaCO3 from Pearl oyster shells have direct band with the value between 2.1 - 2.9 eV.
Development of Integrated Science Teaching Materials on Critical Thinking Skills in the Topic of Object Classification for Junior High School Students Fahmi Fahmi; Yudha Irhasyuarna; Suryajaya Suryajaya; Hery Fajeriadi; Muhammad Kusasi; Mayur Bhoyar; Main Fayez Ahmed Abushaikha
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.680

Abstract

This study aims to develop integrated science teaching materials that incorporate critical thinking skills on the topic of object classification for junior high school students. The research method used is research and development (R&D) through the four-D (4D) model. The research procedure consists of four stages, namely define, design, develop, and disseminate. The subjects in this study included three expert validators and 50 seventh-grade students. The types of data obtained were quantitative data in the form of product validation questionnaire scores and product feasibility scores in the form of product effectiveness data. The results of testing the validity of integrated science teaching materials for critical thinking skills on the topic of object classification for junior high school students obtained an average of 3.79 with a maximum score of 4. The results of the critical thinking aspect validation obtained an average of 3.71 with a maximum score of 4. The effectiveness of the teaching materials developed was also categorized as effective with an overall of pre-test and post-test scores (z=-4.731; p-value=0.000<0.05), and based on three aspects of critical thinking (p-value=0.000<0.05). While the n-gain score obtained was 0.72, so that the improvement in critical thinking was in the high criteria. These results also recommend that the development of science teaching materials integrated with critical thinking skills should continue to be carried out to improve students' skills in a sustainable manner. However, these findings should be interpreted with caution because the effectiveness evaluation was conducted using a single-group design involving students from one junior high school
Enhancing Neuroplasticity in Science Learning through Reflective Inquiry Learning in Preschool Children in the Indonesia-Papua New Guinea Border Dharma Gyta Sari Harahap; Muhammad Novan Prasetya; Yulia Anita Siregar; Muh. Rafi’y; Salman Alparis Sormin; Ferry Irawan; Erwin Siregar; Musawer Hakimi; H. L. M. Mohideen
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.685

Abstract

To support the achievement of Sustainable Development Goal 4 regarding quality and equitable education, the development of innovative science learning models is crucial for early childhood in underdeveloped regions, such as the Indonesia-Papua New Guinea border. Disparities in educational access in border areas often hinder the optimization of children's cognitive potential during their golden years. This study aims to analyze the effectiveness of a neuroscience-based Reflective Inquiry Learning (RIL) model to improve Executive Function (EF) in preschool children. The intervention was implemented through two cycles of Classroom Action Research (CAR) involving 40 preschool children, utilizing data triangulation to assess behavioral changes across the cycles. Quantitative analysis using paired t-tests showed highly statistically significant improvements (p < 0.05$) from the baseline to the completion of the second cycle across all domains, particularly in socio-emotional (+32.70%) and language (+25.60%) skills. The most prominent EF enhancements were observed in emotion regulation (+35%) and inhibitory control (+30%), indicating improvements in executive functions associated with neuroplasticity-related learning processes. In conclusion, the neuroscience-based RIL model serves as an effective and practical pedagogical intervention to optimize EF and support holistic child development in remote border regions
Global Perspectives on Kinematic Graphs in Physics Education: Student Difficulties, Instructional Strategies, and Pedagogical Recommendations for Achieving SDG 4 (Quality Education) Ratih Mega Ayu Afifah; Sutopo Sutopo; Endang Purwaningsih; Nanang Winarno; Nur Jahan Ahmad; Ahmad Taufiq
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.688

Abstract

This study analyzed global publication trends, research instruments, student difficulties, strategies, and pedagogical recommendations related to kinematics graph topics based on articles published in scientific journals between 2015 and 2025. A systematic literature review was conducted following the PRISMA protocol, with 50 articles indexed in Scopus and Web of Science examined. Results indicated fluctuating publication trends, peaking in 2019. Germany contributed the most publications, followed by Turkey and Mexico, with quantitative methods predominating. Most studies employed test instruments, particularly the Test of Understanding Graphs in Kinematics (TUG-K), with university and high school students as the largest sample groups. Thematic analysis revealed that students’ main difficulties involved misconceptions in representation, translation, and interpretation of graphs. Effective strategies included diagnostic instruments, technology integration (eye-tracking, virtual laboratories, real-time sensors, artificial intelligence), and contextual pedagogical approaches that enhanced graph comprehension and data literacy. Recommendations emphasized the need for expanded sampling and instrument validation in future research. Learning strategies should emphasize repeated practice, contextual exploration, and technology use. Teachers were advised to strengthen professional competence and design technology-based learning, while policymakers were urged to adapt curricula and allocate more time to foster deeper understanding of kinematics graphs

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