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M. Irwan Hadi
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Asian Journal of Science, Technology, Engineering, and Art
Published by Lembaga Yasin Alsys
ISSN : 30255287     EISSN : 30254507     DOI : https://doi.org/10.58578/AJSTEA
Core Subject : Science, Art, Social, Engineering,
Arts Computer Science & IT Engineering Social Sciences
Asian Journal of Science, Technology, Engineering, and Art [3025-5287 (Print) and 3025-4507 (Online)] is a double-blind peer-reviewed, and open-access journal to disseminating all information contributing to the understanding and development of Science, Technology, Engineering, and Art. Its scope is international in that it welcomes articles from academics, researchers, graduate students, and policymakers. The articles published may take the form of original research, theoretical analyses, and critical reviews. AJSTEA publishes 6 editions a year in February, April, June, August, October and December. This journal has been indexed by Harvard University, Boston University, Dimensions, Scilit, Crossref, Web of Science Garuda, Google Scholar, and Base. AJSTEA Journal has authors from 5 countries (Indonesia, Nigeria, Pakistan, Nepal, and India).
Arjuna Subject : Umum - Umum
Articles 226 Documents
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Analisis Variasi Jumlah Sudu Terhadap Torsi Yang Dihasilkan Pada Turbin Vortex Aswanto, Trio Harinaldi; Purwantono, Purwantono; Putra, Randi Purnama; Afnison, Wanda
Asian Journal of Science, Technology, Engineering, and Art Vol 1 No 2 (2023): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v1i2.2070

Abstract

Water turbines, particularly vortex turbines, represent a promising alternative energy source with significant potential for development. Vortex turbines are a relatively novel type of water turbine, offering ample opportunities for further research. This study aims to assess the efficiency of different blade variations, specifically 3, 4, and 5 blades. Computational Fluid Dynamics (CFD) analysis was conducted using Solidworks 2022 software. The simulation results indicate that the torque values for 3 blades, 4 blades, and 5 blades were 0.26 Nm, 3.02 Nm, and 4.96 Nm, respectively. Efficiency calculations were performed using a formula, yielding efficiencies of 0.9% for 3 blades, 11.91% for 4 blades, and 20.74% for 5 blades. These results suggest that higher blade counts lead to greater efficiency.
Mineral Additives in Concrete Durability: A Comprehensive Review Regmi, Khem Raj; Sahani, Kameshwar; Sahani, Suresh Kumar
Asian Journal of Science, Technology, Engineering, and Art Vol 1 No 2 (2023): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v1i2.2112

Abstract

The body of literature on concrete using mineral admixtures covers a number of review studies on the durability characteristics of various materials used in concrete, such as fly ash (FA), rice husk ash (RHA), ground granular blast furnace slag (GGBS), fly ash (SF), and met kaolin (MK) are reviewed in this work. The features that are related to durability have been evaluated, and they include permeability, resistance to chloride ion penetrations, abrasion, fire resistance efflorescence. Incorporating mineral admixtures in concrete affects various properties. Concrete's permeability decreases and its ability to resist chloride ion penetration rises when admixtures containing a greater alumina content are used. Use of mineral admixtures enhances compressive strength and enhancing abrasion resistance. Moreover, highly reactive mineral admixtures mitigate efflorescence. Notably, while heating PFA concrete improves fire resistance, it reduces overall durability. SF concrete, on the other hand, behaves similarly to standard concrete but can be more brittle. MK concrete exhibits increased strength at 200°C, but its durability and strength decline at higher temperatures compared to other concrete types.RHA pozzolans can replace OPC up to 15% by weight after curing for up to 200 days without lowering the concrete's compressive strength.
Critical Review and Reality of Religious Moderation in Law and Legal Frameworks in Indonesia Faozan, Muhammad; Rasyidi, Abdul Haris
Asian Journal of Science, Technology, Engineering, and Art Vol 1 No 2 (2023): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v1i2.2259

Abstract

This article aims to conduct a critical review of the role of religious moderation in the context of legislation and the legal framework in Indonesia. Through in-depth analysis, this article investigates the impact of legislative changes on the implementation of religious moderation and its relevance in building a strong and effective legal framework to support harmony in diversity in Indonesia. This research uses qualitative methods with content analysis techniques, namely reviewing and analyzing a number of literature related to the subject matter using a document analysis approach to examine laws and regulations related to religious moderation in Indonesia. Document analysis is used to analyze the text of legislative regulations by understanding their substance, objectives and impact on religious moderation. Meanwhile, literature study is understanding the views and concepts of religious moderation from academic, religious and societal perspectives. The reality in the field regarding the challenges of implementing religious moderation, critical analysis of the legal framework and the relationship between law and social reality are some of the results of critical analysis and findings that can be used as references in viewing and understanding religious moderation in the context of Indonesian society.
Enrollment of Vector in Cardiology and Study of Cardiac Cadence Mishra, Sujal; Sahani, Suresh Kumar; Sahani, Kameshwar; Sah, Binod Kumar; Singh, Vijay Vir
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2301

Abstract

We have analyzed the application of vectors in cardiology and the way cardiac vector theory analyzes the heartbeat and can explain the entire cardiac conduction vector relationship and the Enthoven equilateral triangle hypothesis. This sheet explains the principles of the electrocardiogram and the interpretation of the waveforms. ECG can be called an electrocardiogram, which is a process of producing electrical activity through repetitive cycles. This diagram shows the voltage and duration of electrical activity by placing electrodes on the skin. Vector cardiography ( VCG) is a procedure that creates a 2D image of the heart's electrical activity by monitoring the spatial location of ECG waves at each successive point in their period. Even in the 21st century, coronary heart disease still represents a serious threat to humans and a major challenge to the scientific community. The most important elements for understanding and interpreting the ECG are the Enthoven triangle and the cardiac vector hypothesis, which have the potential , saving millions of lives when used quickly and appropriately to treat patients.
Levels of Proximate Compositions and Minerals (Na, K, Ca, Mg, Cu, and Zn) Present in Eucalyptus (Eucalyptus globulus) and Gingerbread Plum (Noecarya macrophylla) Leaves Collected from Sokoto Town Sarkingobir, Yusuf; Sulaiman, Bello
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2321

Abstract

Sokoto state is been challenged with diverse array of problems such as food insecurity, malnutrition, poor healthcare. Thus, the need to search for locally available plant materials is intensified. The objective of this work was to conduct a phytochemical, proximate and Na, K, Ca, Mg, Cu, Zn (minerals) analysis of eucalyptus (Eucalyptus globulus) and gingerbread plum (Noecarya macrophylla) leaves using standard methods and materials of analytical grade. The proximate results revealed moisture of (7.10 ± 09), (7.73 ±0.3) ash (14.76 ± 0.2) (12.85 ± 0.11), crude lipid (1.38± 0.007) (1.46 ±0.02), crude fibre (2.42 ± 0.03) (2.54 ± 0.03), crude protein (5.66 ± 0.04) (7.3 ± 0.006), carbohydrates (68. 68 ± 0.31) (68.12 ± 0.23) for gingerbread plum and eucalyptus respectively. The minerals in gingerbread plum and eucalyptus respectively are as follows; zinc (0.59± 0.06 ppm).4 ± (0.005 ppm), calcium (11.38 ± 0.6 ppm) (19.48 ± 0.53 ppm), potassium (7.21 ± 1.2 ppm) (5.10 ± 0.93 ppm), copper (0.51 ± 0.007 ppm) (0.19 ± 0.04 ppm), magnesium (3.74 ± 0.41 ppm), (10.9 ± 93 ppm), sodium (7.65 ± 0.63 ppm) (12.21 ± 0.32 ppm). Phytochemicals determined include, alkaloids, saponins, tannins, phenols, and phytate. The results have revealed that, the two plants are rich in proximate, phytochemicals and minerals and can be useful for consumption.
Penentuan Rasio Keuangan terhadap Harga Saham pada Perusahaan Industri Barang Konsumsi dengan Korelasi terhadap Inflasi Tahun 2015-2022 Ningsih, Alifvia Ryadi; Riyardi, Agung
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2383

Abstract

This study focuses on understanding the influence of financial ratios such as current ratio, capital structure (DER), and Firm Size on the stock prices of consumer goods industry companies from 2015 to 2022. Additionally, the stock prices of these companies will be correlated with inflation. The independent variables in this study include current ratio, capital structure (DER), and Firm Size, while the variables correlated with inflation and the dependent variable are the Stock Prices. The sampling method employed is purposive sampling, gathering a sample of 100 instances from 40 companies. The methodology used involves panel data regression utilizing the Random Effect model. The analysis results indicates that the independent variable Current Ratio significantly affects Stock Prices. However, variables like Capital Structure (DER) and Firm Size do not exhibit a significant influence on Stock Prices. Furthermore, Inflation has a significant negative impact on Stock Prices.
Perbandingan LC50 - 72 Jam terhadap Mortalitas Ikan Cere (Gambusia Affinis) pada Limbah Sungai, Laundry, dan Oli Bengkel Adinda, Diva; Putri, Irma Leilani Eka; Atifah, Yusni
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2395

Abstract

The cere fish species (Gambusia affinis) is a small fish, which is 2-3 cm. This fish is a wild fish that fills rivers, ditches and ditches. Cere fish are generally easy to adapt and reproduce. However, the water that irrigates rivers, ditches and ditches often contains community wastes, whether in the form of household waste, laundry, or even oil waste from workshops. So this study aims to obtain the LC5o-72 hour value of waste originating from river waste, laundry, and workshop oil on cere fish mortality. This research was conducted using a completely randomized design experiment. Each waste was treated in 4 treatments with different doses, namely 5 ml/L, 10 ml/L, 25 ml/L, and 50 ml/L for 72 hours with checking every 3 hours, 24 hours, 48 hours, and 72 hours. The results showed that laundry waste had a tolerance limit at a concentration of 10 ml/L and waste oil at a concentration of 25 ml/L.
Identifikasi Jenis Serangga Hama pada Tanaman Padi (Oryza Sativa L.) di Kampung Surau Kabupaten Dharmasraya Anugrah, Chici; Zulyusri, Zulyusri
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2401

Abstract

The aim of the research is to identify insect pests on rice plants (Oriza sativa) in Kampung Surau, Dharmasraya Regency. The method used is direct capture, direct identification by looking at body morphology and using Google Lens. The results of the research show that insect pests in the rice fields are low because they only consist of 7 species of insect pests on rice plants (Oryza sativa), namely black ants (Dolichoderus thoracicus), stalked crabs (Anasa tristis), grasshoppers (Dissoitera carolina), rice caterpillar larvae ( Pyraloidea innota), leaf beetles (Cryptocephalus Beetles), white pests (Nhympula depunctalis) and fierce grasshoppers (Letocorisa acuta).
Evaluation of Organophosphates Residue in Stored Cereals from Some Selected Markets in Jalingo, Nigeria Tutuwa, Jummai Adamu; David, Bando Christopher; Tadawu, Rejoice Habila; Nuhu, Imbasire; Sunday, Oche Gabriel; Ogu, Emmanuel Odiba; Haruna, Peace Gambo; Jesse, Polly Shingu
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2405

Abstract

Cereal grains such rice, sorghum, maize and millet among others are the staple foods in large parts of the world, supplying most of the energy and bulk in diets. Pesticide residue analysis in cereals from the various sampling locations for this dissertation revealed the following organophosphate pesticide residue were present in cereals analyzed Dichlorvos, Diazinon, Phorate sulfon, Malathion, Phorate, Chloropyrifos, Methyl Parathion, Profenofos, Ethion, Dimethoate, Phorate Sulfoxide, Phosalone, Edifenfos, Fenitrothion and Chlorofenvinfos. The presence of pesticide residues is detected in the samples of cereals (Rice, Maize, Millet and sorghum) analyzed. This could be as a result of high utilization of various pesticides during plant, cultivation and storage thus leading to the bioaccumulation of this substance in the individual cereals. It indicates high levels of non-carcinogenic risk associated with the life time consumption of cereals produce and sold within this region. Based on findings from this study’s, I hereby make the following recommendations. Regulatory agencies in Nigeria should step up efforts to ensure compliance with the ban on these chemicals. Farmers and other pesticide users also need to be educated on the dangers of using banned products and on the over application of these pesticides. Furthermore, farmers should be educated on the properly usage of these chemical product, during plant, harvest and storage. Also, manufacturers of these chemicals should produce less toxic pesticide using organic materials in other to prevent the health risk associated with chemical pesticide and their residues in food crops and the environment.
The Calorific Value Experiment on Coconut Shell, Bamboo and Mixed Charcoal Briquette Siharath, Phoummixay; Chanthakhoun, Metkham; Kannitha, Soulyphan; Sonemanivong, Chankhachone; Vilaychaleun, Somchay; Thammathevo, Khampasith; Siharath, Phaiphana; Phommakone, Bounmy; Kounlaxay, Kalaphath; Inthaphouthone, Pathana; Leuanglith, Youlananh
Asian Journal of Science, Technology, Engineering, and Art Vol 2 No 1 (2024): Asian Journal of Science, Technology, Engineering, and Art
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajstea.v2i1.2480

Abstract

The utilization of biomass waste to produce energy is an alternative to get rid of wastes and also save the environment, charcoal briquette is a significant energy and potential choice to use in households, restaurants, markets and other cooking activities, because, it is very easy and convenient to use. The objective of this study is to research on calorific value of charcoal briquettes in various different material. Therefore, according to the experiments found that, the calorific value results of coconut shell briquettes (CBr1), bamboo charcoal briquette (CBr2), mixed charcoal briquette (CBr3) are 6,682 MJ/kg ,4,880 MJ/kg and 5,433 MJ/kg, and remaining ashes are 77 g, 100 g and 250 g, respectively. Apparently, the coconut shell briquette is more preferable and less remaining ashes on environment than other materials.

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