International Journal of Engineering Science Technologies 2024-05-10T08:08:28+00:00 IJOEST Editorial Notification Open Journal Systems <p>International Journal of Engineering Science Technologies is an open access peer reviewed journal that provides bi-monthly publication of articles in all areas of Engineering, Technologies and Science. It is an international refereed e-journal. IJOEST have the aim to propagate innovative research and eminence in knowledge. IJOEST Journals has become a prominent contributor for the research communities and societies. IJOEST Journal is making the bridge between research and developments.</p> <p>Editor-in-chief:<br />Dr. Pratosh Bansal (Professor, Department of Information Technology, Institute of Engineering &amp; Technology, Devi Ahilya Vishwavidyalaya, India)</p> <p>Managing Editor:<br />Dr. Tina Porwal (PhD, Maharani Laxmibai Girls P.G. College, Indore, India)</p> FACTORS AFFECTING COSMETIC SURGERY AMONG YOUNG ADULTS IN MUMBAI 2024-04-19T05:20:17+00:00 Hhet Sanjeev Shah Kavya Jitesh Solanki Krish Paresh Shah Manas Sonesh Shah Purav Mitulkumar Shah <p>This study investigates the factors influencing the decision-making process of young adults in Mumbai regarding cosmetic surgery. By combining quantitative surveys and qualitative analyses, the research explores the impact of mental health, self-image consciousness, family support, social acceptance, and other variables on individuals' choices to undergo cosmetic procedures. The findings highlight the intricate interplay of psychological, social, and cultural factors driving the rising popularity of cosmetic surgeries among young adults in Mumbai. The study emphasizes the importance of a holistic approach to comprehend these influences and suggests the development of targeted interventions to foster positive self-image and overall well-being in this demographic.</p> 2024-05-08T00:00:00+00:00 Copyright (c) 2024 Hhet Sanjeev Shah, Kavya Jitesh Solanki, Krish Paresh Shah, Manas Sonesh Shah, Purav Mitulkumar Shah CFD MODELING AND SIMULATION OF A COUNTERCURRENT REACTOR OF HIDROTREATMENT PROCESS WITH JATROPHA CURCAS L. VEGETABLE OIL 2024-04-27T06:21:30+00:00 Pablo Vizguerra Morales Fabian S. Mederos Nieto <p>In this work, a microscale countercurrent reactor was analyzed and simulated in CFD, and the results were compared with a drained bed reactor (TBR) which is held in the CMP+L research center. The importance of this study is to find the mathematical model of the countercurrent reactor to produce clean fuels from Jatropha Curcas L. vegetable oil and in the future scale it to an industrial level. For the hydrotreatment process, a commercial CoMo/γ-Al2O3 catalyst was used, and Jatropha Curcas L vegetable oil was used as raw material. The operating conditions that were considered for the CFD simulation were temperature 380 °C, pressure 8 MPag, LHSV 8.0 h−1. The reactor model considers a reaction mechanism 13 hydrocracking reactions of triglycerides towards renewable fuels. The CFD simulation was carried out in Fluent 18.2 in a transient state and in 3 dimensions, considering the standard k-ϵ turbulence model, the Eulerian multiphase model and the porous medium model, obtaining results very similar to the experimental ones, with a conversion of triglycerides of 0.996% and the retention time of the liquid temperature was 169 seconds and in the simulation is 200 seconds, the molar concentration profiles of the products were obtained whereby this model can be applied to the industrial scale.</p> 2024-05-21T00:00:00+00:00 Copyright (c) 2024 Pablo Vizguerra Morales, Fabian S. Mederos Nieto MOUNTAINOUS ROAD ROCK ENGINEERING: TECHNIQUES, ENVIRONMENTAL IMPACTS, AND SUSTAINABLE DEVELOPMENT STRATEGIES 2024-05-08T08:40:24+00:00 Chuan Duan <p>This paper comprehensively explores the key technologies and their implementation in mountainous road rock engineering, particularly under complex geological conditions and environmental challenges. Initially, the paper analyzes the geological characteristics of rock bodies, including rock types and geological structures, and assesses the stability of these rock bodies based on these characteristics. Subsequently, it details current construction techniques such as anchoring, shotcreting, and support structures and discusses the use of green materials and the implementation of ecological restoration projects to minimize the impact on the mountainous ecosystem. Through the analysis of successful and unsuccessful engineering cases, the paper summarizes the key factors ensuring project success, as well as lessons learned from failures. Finally, the paper anticipates future technological trends in mountainous road rock engineering, emphasizing the importance of intelligent monitoring, ecological engineering, and new material technologies. This study aims to provide scientific guidance and reference for mountainous road rock engineering, striving for technological optimization and environmental sustainability.<br />The following will guide the structure of your abstract:<br />Motivation/Background: This study addresses the challenges of mountainous road rock engineering under complex conditions, aiming to enhance practices for ecosystem balance and technological sustainability.<br />Method: The research assesses geological characteristics, construction techniques, and ecological integration, analyzing both successful and failed projects to derive key insights and strategies.<br />Results: Results underline the effectiveness of construction methods, ecological benefits of green practices, and crucial insights from case study evaluations, highlighting technological advancements.<br />Conclusions: Concluding that robust understanding and strategic application of technologies are crucial, the study underscores the importance of ecological and technological advancements in improving mountainous road rock engineering.</p> 2024-05-21T00:00:00+00:00 Copyright (c) 2024 Chuan Duan TIME AND COST EFFICIENCY ANALYSIS OF ACEH TENGAH REGENCY POM WORKSHOP PROJECT: A CRITICAL PATH METHOD APPROACH 2024-05-10T08:08:28+00:00 Hafnidar A. Rani Fida Filaya Maina Muhammad Shafly Aqsha Muhammad Hafidz Mubarak <p>The study addresses construction delays in the Aceh Tengah Regency POM Workshop project, valued at IDR 6,414,000,000 and spanning approximately 1,507 m2 across two floors. Motivated by the need for a comprehensive understanding of activity relationships and critical paths, the research aims to assess project duration, costs, and efficiency. Employing the Critical Path Method (CPM) due to data constraints, the study elucidates activity dependencies, network planning, and critical paths. Data collected from relevant stakeholders include schedule and cost budget plans. The analysis reveals a potential acceleration of 21 days, reducing the project duration from 126 to 105 days with a 99.74% probability. Cost control indicates an escalation to IDR 6,949,573,170.20 after calculating direct costs, with a daily increase of 0.92%. The findings underscore the significance of CPM in project management, offering insights into optimizing timelines and costs. The study highlights the importance of efficient project management methodologies in addressing construction delays and managing project budgets effectively.</p> 2024-05-21T00:00:00+00:00 Copyright (c) 2024 Hafnidar A. Rani, Fida Filaya Maina, Muhammad Shafly Aqsha, Muhammad Hafidz Mubarak THE RELATIONSHIP BETWEEN BENDING STRENGTH AND POROSITY IN CERAMIC BRICK THAT CONTAINS VERMICULITE 2024-05-04T07:15:55+00:00 Umut Önen Tahsin Boyraz <p>This study focused on the characterization, product, and relationship between bending strength and porosity of ceramic bricks with added vermiculite. To achieve this goal, pre-made bodies containing 0%, 10%, and 20% calcined vermiculite by weight were mixed in to create the body compositions. Alumina ball manufactories homogenized fusions (60 rpm, 24 hours) were molded through uniaxial dry pressing (100 MPa). Additionally, the arranged samples were heated to a temperature of 800-1000 °C for a duration of 1 hour. Tests involving phase analysis (XRD), microstructure (SEM), mechanical properties (three point bending), and physical characteristics (Porosity, water absorption, shrinkage and bulk density) were carried out on the demitasse bodies that were manufactured. The data that was collected was displayed in graphs and tables, showing the results. As a result, the packages containing samples of vermiculite were effectively created, and the best parameters were easily displayed. The findings indicate that the quality of flawed packages improves as calcined vermiculite levels rise. Following the characterization results, the correlation between bending strength and porosity was investigated. Correlations, t-tests, and p-values were computed. The inclusion of vermiculite in ceramic bricks results in a significant negative correlation of -0.769 between their bending strength and porosity characteristics.</p> 2024-05-31T00:00:00+00:00 Copyright (c) 2024 Umut Önen, Tahsin Boyraz