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Asep Bayu Dani Nandiyanto
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Asean Journal of Science and Engineering (AJSE)
Published by Universitas Pendidikan Indonesia
ISSN : 27766098     EISSN : 27765938     DOI : https://doi.org/10.17509/ajse.
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Engineering Materials Science & Nanotechnology
ASEAN Journal of Science and Engineering (AJSE) promotes research in the broad field of science and Engineering Education (including such disciplines as Agriculture Education, Environmental Science Education, etc.) with particular respect to Indonesia, but not limited to authorship or topical coverage within the region. Contributions are expected from senior researchers, project managers, research administrators and PhD students at advanced stages of their research, representing both public organizations and private industry. Equally, the journal if intended for scholars and students, reseachers working at research organizations and government agencies, and also for enterprises undertaking applied R&D to lead innovations. The editorial contents and elements that comprise the journal include: Theoretical articles Empirical studies Practice-oriented papers Case studies Review of papers, books, and resources. As far as the criteria for evaluating and accepting submissions is concerned, a rigorous review process will be used. Submitted papers will, prior to the formal review, be screened so as to ensure their suitability and adequacy to the journal. In addition, an initial quality control will be performed, so as to ensure matters such as language, style of references and others, comply with the journal´s style. The below mentioned areas are just indicative. The editorial board also welcomes innovative articles that redefine any Science and Technology field. Chemistry and Chemical Engineering Physics, Material, and Mechanical Engineering Biology, Biological and Bio System Engineering Food and Agriculture Engineering Mathematics Computer Science and Engineering Earth Science and Engineering Space Engineering Electrical Engineering Architecture and Civil Engineering Environment Science and Engineering Basic Science in Engineering Engineering Reforms New Technologies Industry and Education: A Continous Collaboration Research and Development in Engineering Globalisation in Engineering Women in Engineering Computers, Internet, Multimedia in Engineering Organization of Laboratories Agricultural Bio Systems Engineering Mechanical Engineering Electric and Electronic Engineering Civil Engineering and Architectural Engineering
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 125 Documents
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Effect of Proper Treatment on Mineral Oils Felix, Stephanie Azlyn Anak; Din, Muhamad Faiz MD
ASEAN Journal of Science and Engineering Vol 3, No 3 (2023): AJSE: December 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v3i3.49523

Abstract

For over a century, a transformer act as a crucial part of the high voltage system. This also acts as an energy alteration device that is used to step-up and step-down voltage for power distribution from power generation to the consumers.  Maintaining a transformer is important since a single mistake can lead to a vast amount of problems in a high voltage system in terms of cost. Thus, nowadays, many researchers study the important parts of a transformer, making it to function more effective. One of the studies involves improving treatment in the insulation medium of transformers to improve its function and performance. Here, the focus of this experiment was to study the effect of proper treatment on mineral oil in terms of electrical properties as an insulator in the transformer. The drying process was the main concern in this experiment. Parameters such as AC breakdown voltage, Tan Delta value, Raman measurement, resistivity, and relative permittivity were particularly measured. Origin software was used to analyze the data obtained from the experiment. The results expected from the experiment is that the proper preparation plays the role in tuning the AC breakdown voltage.
Assessment of AQI, PM10, PM2.5, NO2, O3: The Case of Owo, Nigeria Abulude, Francis Olawale; Akinnusotu, Akinyinka; Bello, Lateef; Feyisetan, Abigail Oluwakemi
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.51433

Abstract

When evaluating the quality of the air, the most important pollutants to keep an eye on are particulate matter (PM), NO2, CO, O3, and SO2 gases. Their impact on people and the environment is a simple fact. Before taking any action, it is necessary to determine how much of them are present in the air. Therefore, the purpose of this article is to evaluate the AQI, PM, and other pollutants present in the Nigerian town of Owo in Ondo State. This was accomplished with the help of the recently introduced AirVisual PM wireless sensor technology. It collects data on AQI, PM10, PM2.5, NO2, and O3 using satellite imagery. The AQI was interpreted using the Aculeated Air Quality Scale. The findings revealed that the AQI was in the average range. The NO2 values were lower than the advised limits when these findings were compared to WHO standards. While the O3 values were significantly below the 8-hour daily maximum and peak session, the PM values significantly exceeded the annual and 24-hour mean limits. Nigeria should start making efforts right away to stop activities that could increase pollution both inside and outside of the town of Owo, which is a rapidly expanding town in the Ondo State.
Innovation of Environmentally Friendly Solid Electrolyte Biobattery Based on Carrageenan and Rotten Tomatoes Widyaningsih, Mia; Abidin, Muhamad; Hafidh, Ashary Fathul; Murniati, Anceu; Ragadhita, Risti; Rizky, Karina Mulya; Mudzakir, Ahmad
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v3i3.49681

Abstract

This research aims to create and evaluate the performance of environmentally friendly biobattery based on carrageenan and rotten tomatoes to reduce B3 waste. To make a biobattery based on carrageenan and rotten tomatoes, five ratios of carrageenan and rotten tomatoes mixtures were used with the composition of carrageenan values of 1, 2, 3, 4, and 5% for each type of battery. The parameters observed in this study were the potential difference, current strength, and stability of the biobattery. Carrageenan was added to prevent battery leakage and maintain battery stability. As a result, the biobattery has a potential difference value equivalent to a commercial battery, namely 1.5 V, but the current generated is still low. On the other hand, biobatteries can be applied to alarm clocks. The difference in carrageenan concentration has no significant effect on the value of potential difference, current strength, power, recharging ability, and application on wall clocks, as well as the stability of the biobattery. The experiment was carried out with the hypothesis that husk ash can absorb rotten tomatoes, preventing electrolyte leakage. However, the resulting biobattery is still leaking. After that, we modified it again by using electrolytes made from rotten tomatoes and coconut dregs, but the leakage was still the same. Therefore, the biobattery made from a combination of carrageenan and rotten tomatoes was assumed to keep the battery more stable and prevent leakage. This research was expected to contribute to the development of environmentally friendly batteries to reduce B3 waste, along with the increasing need for batteries in the era of industrial revolution 4.0.
Ethanol Effect on the Performance of a Conventional Solar Still Bellila, A.; Souyei, B.; Kermerchou, I.; Smakdji, N.; Sadoun, A.; Elsharif, N.; Siqueira, A.
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.56026

Abstract

The lack of drinking water is a major problem in many parts of the world, and solar distillation can be an effective solution. Solar distillation is a simple process that uses the energy from the sun to evaporate water and then collect the condensed vapor, leaving behind impurities. Ethanol has a lower boiling point than water, which means it evaporates more easily when exposed to heat. This can improve the efficiency of solar distillation by allowing the water to evaporate more quickly and at a lower temperature, reducing the amount of energy needed from the sun. The results you mentioned, showing a 20% improvement in performance compared to conventional solar stills, are promising. However, specific results and effectiveness of this modification may vary depending on various factors such as the type of still used, the concentration of Ethanol used, and environmental conditions
Comments on the paper “How to calculate crystallite size from x-ray diffraction (XRD) using Scherrer method” by Siti Fatimah et al. published in ASEAN Journal of Science and Engineering 2 (2022) 65 Tomaszewski, Paweł E.
ASEAN Journal of Science and Engineering Vol 3, No 3 (2023): AJSE: December 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v3i3.56905

Abstract

My comments concern the error in the crystallographic analyses presented in the commented paper “How to calculate crystallite size from x-ray diffraction (XRD) using Scherrer method” by Siti Fatimah et al. published in ASEAN Journal of Science and Engineering 2 (2022) 65.
The Development of Intelligent Tutoring System in The Military Schools Kurniawan, Bobi; Meyliana, M.; Warnars, Harco Leslie Hendric Spits; Suharjo, Bambang
ASEAN Journal of Science and Engineering Vol 3, No 3 (2023): AJSE: December 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v3i3.57917

Abstract

The rapid and fast development of technology affects many aspects of life, especially in the field of education. The application of technology in education is needed to support a more effective and efficient learning process without any space and time constraints. An example is the implementation of the Intelligent Tutoring System (ITS) which is often known as an intelligent learning system. An ITS in the field of military education is needed to produce professional military graduates/HR. Therefore, researchers will examine trends in research development and updates on ITS technology in the military field. Efforts to achieve research objectives are carried out using the Systematic Literature Review method with bibliometric analysis or VOSviewer. The purpose of this study is to become a reference for determining research topics on ITS in the field of education, especially the military.
Research Trends from The Scopus Database Using Keyword Water Hyacinth and Ecosystem: A Bibliometric Literature Review Nandiyanto, Asep Bayu Dani; Fiandini, Meli; Al Husaeni, Dwi Novia
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.60149

Abstract

The problem of water hyacinth (Eichhornia crassipes) invading aquatic biota ecosystems is a hot issue that is currently being discussed throughout the world. Due to the many solutions proposed in academia for their management, mitigation, and utilization, it is necessary to investigate through systematic research. Based on this, this study aims to present research developments on the topic of water hyacinths and ecosystems using bibliometric analysis. In this research, a total of 227 articles from 2000 to 2023 years regarding the keywords “water hyacinth” AND “ecosystem” were taken from Scopus which was used for further analysis. To accomplish the bibliometric analysis, the software programs VOSviewer was used. Based on the findings, it shows that the number of article publications over the last 23 years (2000-2023) has experienced fluctuating changes which are divided into three periods. The pioneering and growth periods were identified in 2000-2008 and 2009-2015. Meanwhile, the acceleration period will occur in 2016-2023. According to the results of data visualization, it was found that there were 4 clusters. The keyword "water hyacinth" is used more frequently, especially in 2016. The most productive affiliate publishing article is the University of California. Meanwhile, the most productive country is India. In addition, most productive authors come from India, namely Kanna, S. and Dube, T.
Characterization, Acidifying, and Antibacterial Activity of Lactic Acid Bacteria Against Spoilage Strains Present in Chicken Meat Choukri, Soumaya; Bouigua, Hassan; Choukri, Niama; Hammouti, Belkheir; Mouniane, Yassine; Ettouil, Abdessamad; Rokni, Yahya; Ouhssine, Mohammed
ASEAN Journal of Science and Engineering Vol 3, No 3 (2023): AJSE: December 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v3i3.60380

Abstract

Nowadays, through their beneficial roles, lactic acid bacteria have been used as natural additives for the formulation of several products especially in the food industry; as they reduce the pathogen load and improve the quality of fermented food. This work focuses on the technological study of five homolactic strains isolated from three fermented barley preparations belonging to three species: Lactobacillus plantarum, Pediococcus spp, and Lactococcus lactis ssp. The experiment focused on testing their acidifying activity and their antibacterial action against a range of spoilage strains isolated from chicken meat. The identification was carried out based on the study of the cultural, morphological characters and biochemical tests which revealed the presence of five strains namely: Escherichia Coli, Salmonella sp, Staphylococcus aureus, Proteus vulgaris, and Klebsiella pneumonia. The results obtained showed that the strains (SC1, SC4, and SC5) have acidifying activities, in parallel with a significant antibacterial effect compared to the other strains (SC2, SC3) whose respective values were 1.63±0.07%, 0.99±0.23% and 1.29±0.65% for SC1, SC4 and SC5. Moreover, the cell-free culture supernatant (CFCS) inhibition zones range from 19.5 ± 0.70 mm to 10.25 ± 0.35 mm.
Chatbot Artificial Intelligence as Educational Tools in Science and Engineering Education: A Literature Review and Bibliometric Mapping Analysis with Its Advantages and Disadvantages Al Husaeni, Dwi Fitria; Haristiani, Nuria; Wahyudin, W.; Rasim, R.
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.67429

Abstract

This research was conducted to analyze the application, utilization or use of AI chatbots in the education sector based on several previous studies. Bibliometric analysis is used to identify the current status of research and critical points in bibliometric data mapping can help predict future research trends. Data searches were carried out on the Scopus database with the keywords "Chatbot" AND "education" with a research year range of 2007-2024. There were 376 articles found. The research results show that research on chatbots, especially in the education sector, is increasingly in demand. In 2023 there will be a drastic increase in the number of studies regarding chatbots in the education sector compared to previous years. This is because chatbots are considered to be an interesting tool to use in education because they enable a more innovative teaching process in terms of improving learning processes and outcomes. There are 25 countries that have contributed to related research, with the United States, Australia, United Kingdom, China and Taiwan in the top five. This research also shows that there are 26 subject areas that have used chatbots in the education sector. The use of chatbots in the education sector has advantages and disadvantages. With the completion of this research, it is hoped that it can become material for consideration for related research.
How to Read and Determine the Specific Surface Area of Inorganic Materials using the Brunauer-Emmett-Teller (BET) Method Irwansyah, Ferli Septi; Amal, Alfi Ikhlasul; Diyanthi, Erlinda Widyasmara; Hadisantoso, Eko Prabowo; Noviyanti, Atiek Rostika; Eddy, Diana Rakhmawaty; Risdiana, Risdiana
ASEAN Journal of Science and Engineering Vol 4, No 1 (2024): AJSE: March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ajse.v4i1.60748

Abstract

The specific surface area of inorganic materials is a crucial parameter that influences their performance in various applications. The Brunauer-Emmett-Teller (BET) method is widely used for accurately determining the surface area of porous materials. This study presents a comprehensive guide to determining the specific surface area of inorganic materials using the BET method. The paper outlines the theoretical background of the BET method, the experimental procedures involved, and the data analysis techniques. Additionally, we discuss the limitations and potential sources of errors in the BET method. The proposed guide aims to provide researchers and practitioners with a systematic approach to accurately measure the specific surface area of inorganic materials, enabling informed decision-making and enhancing material design and optimization processes.

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