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ASEAN Journal for Science and Engineering in Materials
Published by Yayasan Bumi Publikasi Nusantara
ISSN : 2828920X     EISSN : 28289951     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
The ASEAN Journal for Science and Engineering in Materials (AJSEM) promotes research in the broad field of Science and Engineering in Materials 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 editorial board welcomes innovative manuscripts from Science and Technology field. The scopes of this journal are Material Science and Engineering Materials relating to Agriculture Materials relating to Architecture and Civil Engineering Materials relating to Astronomy and Space Engineering Materials relating to Biology, Biological and Bio System Engineering Materials relating to Chemistry and Chemical Engineering Materials relating to Computer Science and Engineering Materials relating to Earth Science and Engineering Materials relating to Electric, Electronic, and Electrical Engineering Materials relating to Environment Science and Engineering Materials relating to Food Science and Engineering Materials relating in the Organization of Laboratories Material Science and Engineering relating to Education
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 8 Documents
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Search results for , issue "Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023" : 8 Documents clear
Synthesis, Characterization, and Antimicrobial Studies of Some Metal (II) Complexes of Some Azo Dyes Aladesusi, Ruth Cecilia; Eke, Uche Basil
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

Azo compounds possess the R-N=N-R’ functional group are used as dyes and from the literature survey, their biological activities are enhanced when coupled with other transition metal complexes of Co(II), Cu(II), Mn(II), Ni(II) and Zn(II) with a novel bis azo dye 2, 2 1 [benzene-1, 3-diyl di(E) diazene 2,1-diyl] bis (4-chloroaniline) derived from mphenylenediamine and p-chloroaniline were synthesized. Data were supported by characterizations using UV-Vis spectroscopy and these compounds have been done based on elemental analysis, electronic data, Fourier Transform Infra-Red (FT-IR), 1H Nuclear Magnetic Resonance (NMR), powder X-ray diffraction and thermal analysis, and magnetic data. From the analytical and thermal data, the stoichiometry of the complexes is 1:1 (metal: ligand). Based on physicochemical data octahedral, tetrahedral, and square planar geometries were assigned for the complexes. The ligand and metal complexes were screened for their antimicrobial activity. The azo of 2-aminopyridine with its cobalt (II) complex exhibited antimicrobial activity at higher and lower concentrations.
Mechanical Design and Analysis of Eco-Print Textile Pounding Machine Reflin, Rhainna Rheizkhira; Chang, Steven Henderson; Saptaji, Kushendarsyah; Triawan, Farid
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

This study presents the design and analysis of an automated eco-print textile pounding machine to reduce labor intensity and preserve artistic aspects. The machine offers an efficient and cost-effective solution for businesses to meet the demand for eco-friendly textiles while maintaining control over the pounding technique. By utilizing a rotating flywheel mechanism, the device achieves approximately an average of 5 pounds with a force of 8.54 N per second. It features unique characteristics, including disassembly capability and replaceable parts for easy maintenance and longevity. The safety analysis indicates favorable safety factor values of 5.68 and 4.70 for static and dynamic loads, respectively, in the most critical part. Based on these results, it can be concluded that this product is safe and has a predicted infinite lifespan. This study serves as a valuable reference for the development of enhanced eco-print textile pounding machines.
Green Concrete: Ferrock Applicability and Cost- Benefit Effective Analysis Hadi, Arzu M.; Hasan, Kamalaldin F.; Ahmed, Inas M.; Meteab, Maha A.; Hasan, Qais F.
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

This research aims to assess the viability and suitability of Ferrock as an alternative to concrete for constructing foundations. The study evaluates the performance of Ferrock in foundation applications, compares its costs with traditional concrete, and examines the benefits of using Ferrock for foundations. To achieve these objectives, the utilization of Staad Pro and Foundation software is done to analyze the performance of Ferrock foundations. A cost-benefit analysis, considering factors like material costs, construction techniques, and maintenance requirements to determine the economic feasibility of Ferrock as a substitute for concrete and the potential to reduce carbon emissions, and promote environmentally friendly construction practices is also done. The research findings indicate that Ferrock exhibits promising performance characteristics for building foundations. It demonstrates comparable strength to traditional concrete while offering potential environmental benefits. Although implementing Ferrock may require an initial investment, the long-term advantages of reduced maintenance costs and improved sustainability contribute to its overall value proposition.
Why 200°C is Effective for Creating Carbon from Organic Waste (from Thermal Gravity (TG-DTA) Perspective)? Ragadhita, Risti; Nandiyanto, Asep Bayu Dani
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

The purpose of this study was to evaluate the decomposition of organic waste into carbon microparticles under atmospheric conditions. Carbon microparticles are made by drying and carbonizing raw water hyacinth. Then, the carbon microparticles that have been produced are ground using a saw-milling apparatus. Carbon microparticles prepared from raw water hyacinth were heated in an electric heating furnace at a specific temperature for the analysis. The experimental results show that the thermal decomposition process has three steps. Water hyacinth is stable at temperatures below 100°C. As carbon decomposes at higher temperatures, the process of decomposition into smaller molecules occurs. Then, at temperatures ranging from 150 to 280°C, an effective carbonization process occurs to form carbon. The advantages gained, in this case, will provide a better understanding of how to use heat treatment on water hyacinth.
Effect of Additional Natural Filler Waste on The Mechanical Properties of Polyurethane Polymer Mohammed, Ahmed J.; Muhsen, Muhsen Chelab; Ibrahim, Ibrahim K.
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

The mechanical properties of polyurethane/conocarpus leaf composites were studied. The conocarpus leaf powder was mixed with 0-55% of polyurethane. The best ratio was obtained when using 45-55%. The obvious improvement in the mechanical parameters was recorded when adding conocarpus leaf powder with 55% of polyurethane. The properties of polyurethane/conocarpus leaf composites were analyzed as a function of the additional ash amount. All prepared composites showed improved ash dispersion in the polyurethane matrix. The highest value of the compressive strength was when the ratio of 45%, reaching 9.82 MPa. This is because of this homogeneity rate between conocarpus leaf powder and chains of the polymer. The lowest value was obtained, reaching 3.3 MPa when using 30%.
Regression Study on the Impact of Vehicular Emission Pollutants on Ozone Level: Chemical and Material Perspectives Ekwumemgbo, Patricia Adamma; Okon, Idongesit Edem
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

This study verified the impact of vehicular emission pollutants and meteorological factors on the variability of ground-level ozone in Port Harcourt, Nigeria using multiple linear regression (MLR) analysis (p=0.05). Data were collected at traffic hot spots over twelve calendar months (December 2017 and November 2018). The explanatory variables were precursor pollutants (NO2, CO, and VOCs) and meteorological factors (temperature, relative humidity, and wind speed). Data collected were subjected to correlation analyses, and O3 concentrations showed a significant positive correlation with NO2, CO, VOCs, and traffic density (p= 0.05). O3 levels also correlated positively with temperature and negatively with wind speed and relative humidity across traffic periods. Three Models: Model 1, Model 2, and Model 3 were generated from MLR analyses for the estimation of O3 variation in the morning peak traffic period, off-peak traffic period, and evening peak traffic period respectively. Validation of performance for each Model was achieved using performance statistics including adjusted R2, mean absolute error (MAE), mean biased error (MBE), mean square error (MSE), and root mean square error (RMSE).
A Review of Recent Advancements in Geophysical Technologies and Their Implications for Mineral and Hydrocarbon Exploration Haritha, K.
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

Geophysical technologies have undergone significant advancements in recent years, providing new insights into the subsurface and enhancing the exploration of mineral and hydrocarbon resources. This review paper presents an overview of recent advancements in geophysical technologies and their implications for mineral and hydrocarbon exploration. The paper begins with a discussion of electromagnetic, seismic, gravity and magnetic, ground penetrating radar, and borehole geophysical methods, highlighting their respective advancements. The paper then examines the implications of these advancements for mineral and hydrocarbon exploration, including improved resolution and accuracy of geophysical data, cost-effective exploration in remote and challenging environments, a better understanding of subsurface structures and geology, identification of new mineral and hydrocarbon resources, and reduction of exploration risk and improved economic viability. Case studies are presented to demonstrate successful applications of geophysical technologies in mineral and hydrocarbon exploration. Finally, the paper discusses the challenges and future directions for research and development, including limitations of geophysical technologies, integration with other exploration methods, emerging geophysical technologies, and their potential for mineral and hydrocarbon exploration.
Application of Project-Based Worksheets for Making Conditioner from Aloe Vera (Aloe vera L.) to Develop Students' Scientific Performance Fatmala, Trie Rizqi; Windayani, Neneng; Irwansyah, Ferli Septi
ASEAN Journal for Science and Engineering in Materials Vol 2, No 2 (2023): AJSEM: Volume 2, Issue 2, September 2023
Publisher : Bumi Publikasi Nusantara

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Abstract

This research aims to describe student activities, analyze student scientific performance at each learning stage, and analyze the characteristics of conditioners made from aloe vera (Aloe vera L.) by applying a project-based worksheet. The research method used was pre-experimental with a One-Shot Case Study design. The subjects of this research were students of class XI MIA MA Al-Jawami Cileunyi. The instruments used are learning descriptions, observation sheets, student worksheets (LKS), student scientific performance sheets and product assessment sheets. Data was obtained from observations of learning activities, filling out scientific performance sheets and product assessment sheets. The research results showed that overall student activity reached 94.8% with very good interpretation. The average value of student performance at all stages of learning by implementing project-based learning is 88.4 with good interpretation. The average value of students' scientific performance ability is 94.4 with very good interpretation. The average value of the characteristics of conditioners made from aloe vera as a whole is 98.4 with a very good interpretation. Thus, the application of project-based worksheets for making conditioner from aloe vera (Aloe vera L.) can develop students' scientific performance.

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