American Journal of Science, Engineering and Technology

Volume 8, Issue 3, September 2023

  • Shear Strength Reduction Analysis of Slope by Numerical Modelling Based on Finite Element Method

    Mahendra Acharya, Asim Timalsina, Ujjan Paudel

    Issue: Volume 8, Issue 3, September 2023
    Pages: 125-132
    Received: May 20, 2023
    Accepted: Jun. 26, 2023
    Published: Jul. 11, 2023
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    Abstract: The stability of the slope is the crucial factor in geotechnical engineering, particularly when the slopes are composed of soils. The purpose of this research is to analyze the shear strength reduction of glacial till slope using phase 2 software. Where, conclusive analysis is based on two methods, Limit equilibrium and the Mohr-Colomb criterion Fi... Show More
  • Electrical Power Generation from Heat Recovered at the Throat of a Downdraft Biomass Gasifier

    Nzihou Jean Fidele, Hamidou Salou, Imbga Kossi, Segda Bila Gerard, Ouattara Frederic, Tiemtore Hamadou

    Issue: Volume 8, Issue 3, September 2023
    Pages: 133-140
    Received: Jun. 09, 2023
    Accepted: Jul. 10, 2023
    Published: Jul. 20, 2023
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    Abstract: Gasification, a thermochemical process that takes place in gasifiers, is now understood as a process of transforming the solid components of biomass into combustible gases essentially consisting of carbon monoxide (CO) and dihydrogen (H2). This technology is relatively old and was widely used during the Second World War to deal with the shortage of... Show More
  • The Relationship Between Noise and Temperature to the Level of Work Fatigue in Workers in the Cutting Section

    Tri Budiyanto, M. Yusuf, Bintang Panjiwani Kusuma As’ari

    Issue: Volume 8, Issue 3, September 2023
    Pages: 141-145
    Received: Jun. 20, 2023
    Accepted: Jul. 06, 2023
    Published: Jul. 20, 2023
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    Abstract: Work fatigue is a decrease in or inability for a person to carry out work activities. Fatigue can occur due to factors in an unsupportive work environment. Workers in the cutting section at Small and medium-sized enterprises (SMEs) Gunungkidul Yogyakarta, Indonesia, carry out the production process in the form of cutting natural stone every day, wh... Show More
  • A Modified Approach of Dijkstra’s Method for Finding Shortest Path in a Weighted Directed Graph

    Md. Mehedi Hassan, Md. Asadujjaman, Md. Golam Robbani

    Issue: Volume 8, Issue 3, September 2023
    Pages: 146-151
    Received: Jun. 08, 2023
    Accepted: Jun. 25, 2023
    Published: Jul. 31, 2023
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    Abstract: The shortest route technique is a fundamental problem in various fields, including transportation, logistics, network routing, and robotics. In this paper, we have discussed a prominent algorithm, namely Dijkstra's algorithm, and propose an alternative method for addressing these problems. A thorough comparison is conducted between the proposed alg... Show More
  • Hydraulic Performance Evaluation of Diversion Weir and Canal Structures: Case Study of Basaka Small Scale Irrigation Scheme, Wayu Tuka, East Wallaga, Oromia, Ethiopia

    Gemechu Mosisa, Dereje Adeba

    Issue: Volume 8, Issue 3, September 2023
    Pages: 152-161
    Received: Jul. 14, 2023
    Accepted: Aug. 08, 2023
    Published: Aug. 22, 2023
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    Abstract: Hydraulic Performance evaluation of the irrigation system is important to conserve scarce water resources by improving the performance of the existing irrigation structure. However, there was no study in the past performance evaluation of the Basaka scheme, which is used for irrigation purposes. This study was to evaluate the hydraulic performance ... Show More
  • Using Mechanical Vibration to Enhance Heat Transfer on an Extended Surface: A Review Study

    Furqan Haider Mohammed Ali, Ehsan Fadhil Abbas, Iesam Jondi Hasan, Shahen Mohammed Fakhraldin

    Issue: Volume 8, Issue 3, September 2023
    Pages: 162-172
    Received: Jul. 28, 2023
    Accepted: Aug. 15, 2023
    Published: Aug. 28, 2023
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    Abstract: Given the significance of improving heat transfer in thermal engineering equipment, researchers in this field have developed numerous methods for heat transfer improvement. These methods are classified as active and passive. Several researchers consider the use of forced vibration in improving heat transfer to be one of the most significant topics ... Show More
  • Optimization Study of Methyl Ester (Biodiesel) Synthesis from Chicken Tallow Using Polyoxomolybdate Catalyst

    Ibrahim Garba Wawata, Abubakar Umar Birnin Yauri, Aliyu Muhammed, Babayemi Wasiu

    Issue: Volume 8, Issue 3, September 2023
    Pages: 173-183
    Received: Aug. 09, 2023
    Accepted: Aug. 25, 2023
    Published: Sep. 06, 2023
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    Abstract: Biodiesel, which consists of fatty acid alkyl esters, is currently accepted as a potential alternative to petro-diesel due to its low carbon footprint and environmental advantages. This study synthesized a polyoxomolybdate catalyst in an organic-aqueous phase at a pH of 2, using Ammonium Molybdate ((NH4)6Mo7O24.4H2O) salt. The catalyst underwent ch... Show More