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Volume 5

V5-Issue-1

Editor:Prof. Dr. Selahaddin Orhan Akansu

The Potential of Teacher Involvement in Improving the City's Environment

Corresponding Author: Indriyani Rachman

Authors:
Indriyani Rachman
Nani Anggraini
Toru Matsumoto

DOI Number https://doi.org/10.52924/RAEU6157

Received: 07.10.2024

Accepted: 20.12.2024

Published: 08.02.2025

Abstract(summary) Download Full Text

The Potential of Teacher Involvement in Improving the City's Environment

Summary:
This research aims to examine the role of teachers in environmental education and disaster mitigation in Mataram City, West Nusa Tenggara Province. This research activity was carried out in August 2023 involving 422 respondents consisting of elementary school teachers. Research activities took place by distributing questionnaires with questions divided into four parts, namely teachers' perceptions of students' interest in the environment, teachers' attention to rivers, teachers' role in disaster mitigation, and teachers' contributions to environmental education. The results of the questionnaire show that the majority of teachers play a role in environmental education for students and disaster mitigation. As many as 65% of students are interested in studying the environment and as many as 60% of teachers teach environmental education to students.

CARBON FOOTPRINT AND ENERGY RELATIONSHIP

Corresponding Author: Evrim ÖZRAHAT

Authors:
Fatih GÜRLEK
Evrim ÖZRAHAT
sEBAHATTİN ünalan

DOI Number https://doi.org/10.52924/UNID7171

Received: 31.10.2024

Accepted: 07.12.2024

Published: 08.02.2025

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CARBON FOOTPRINT AND ENERGY RELATIONSHIP

Summary:
As technology advances today, energy demand is also increasing, with approximately 85% of this demand being met by fossil fuels. The use of fossil fuels leads to the release of greenhouse gases, which are known to be one of the main causes of global warming. Although electrical energy is the most common and easily accessible form of energy, it is not found in nature and must be produced from other energy sources. Renewable energy sources, on the other hand, are not yet sufficient in terms of both cost and meeting energy demand. Therefore, additional taxation is being planned on countries and businesses that use fossil fuels with high greenhouse gas emissions. In this context, the carbon footprint becomes an important parameter for measuring polluting effects. However, calculating the carbon footprint is quite complex, which makes it challenging to ensure fair taxation in energy production and consumption. Thus, it would be fairer to base additional taxation on the amount of greenhouse gases produced per capita in a country. According to calculations, the global average per capita emission of fossil fuel-based greenhouse gases is around 5300 kg. Saudi Arabia and the UAE, as major oil producers, are responsible for producing 15 times this average, while Kuwait is responsible for 23 times the average. The largest energy consumers, such as the United States and Russia, emit three times the average, while Germany, Japan, and China contribute approximately twice the amount. For Turkey, this figure is around 1.5 times the global average. Recently, electric vehicles (EVs), which have been promoted as a more environmentally friendly option, have been compared to conventional vehicles under the conditions in Turkey. Since each country has different sources of electricity generation, the goal of EVs producing fewer greenhouse gases is influenced by these factors. The results of calculations specific to Turkey show that while EVs are more environmentally friendly compared to gasoline and diesel vehicles, the situation is more complex and debatable for LPG-powered vehicles.

Evaluation of Cikapundung River Water Quality Based on Upstream, Middle, and Downstream Characteristics: A Comparative Approach

Corresponding Author: Fauzan Ahwan Al-Farisi

Authors:
Fauzan Ahwan Al-Farisi

DOI Number https://doi.org/10.52924/KRVA9089

Received: 13.12.2024

Accepted: 29.01.2025

Published: 08.02.2025

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Evaluation of Cikapundung River Water Quality Based on Upstream, Middle, and Downstream Characteristics: A Comparative Approach

Summary:
This study evaluates the water quality of the Cikapundung River based on upstream, midstream, and downstream characteristics using a comparative approach. The water quality data include parameters such as dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), and total dissolved solids (TDS). The analysis revealed that DO, BOD, COD, and TSS parameters in certain river segments did not meet the surface water quality standards set forth in Government Regulation No. 22 of 2021, Class II. The high pollution levels were mainly attributed to domestic, industrial and other human activities. This study provides important insights into the water quality conditions of the Cikapundung River and their implications for environmental management in the region.

Investigation of the effect of stearic acid addition to diesel on combustion in a compression ignition engine

Corresponding Author: Volkan Sabri KÜL

Authors:
Volkan Sabri KÜL
Mehmet SARITAŞ

DOI Number https://doi.org/10.52924/ZDOJ8219

Received: 22.12.2024

Accepted: 21.01.2025

Published: 08.02.2025

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Investigation of the effect of stearic acid addition to diesel on combustion in a compression ignition engine

Summary:
Stearic acid is a saturated fatty acid with the chemical formula CH3(CH2)16COOH. Stearic acid is used in the literature as a surfactant, plasticizer, reducer of flow resistance, water repellent (hydrophobic), reducing agent of hygroscopicity and dielectric film layer former. In addition, according to scientific studies, coating nanoparticles such as aluminium and boron with stearic acid increases their combustion stability. This study is a preliminary study for experimental studies on combustible solid particles. Due to the above-mentioned properties of stearic acid, it is desired to use it as a surfactant. However, the effect of stearic acid on combustion in a compression ignition engine needs to be investigated experimentally. For this purpose, stearic acid was used as an additive to diesel fuel in a compression ignition heavy-duty diesel engine. Stearic acid was added to the diesel fuel in the amounts of 125, 250, 500 and 1000 ppm by mass. Then it was mixed with a stirrer for 45 minutes. The test engine was operated at 700 rpm and 300 Nm load. Engine performance and emission data were examined.

GREY TYPE-I PARALLEL ASSEMBLY LINE BALANCING PROBLEM

Corresponding Author: Prof. Dr. Emel Kızılkaya Aydogan

Authors:
Dr. Salih HIMMETOĞLU
Assoc. Prof. Dr. Yılmaz Delice
Prof. Dr. Emel Kızılkaya Aydogan

DOI Number https://doi.org/1052924/DVHB3671

Received: 24.12.2024

Accepted: 28.01.2025

Published: 08.02.2025

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GREY TYPE-I PARALLEL ASSEMBLY LINE BALANCING PROBLEM

Summary:
Purpose: The purpose of this paper is to solve a grey parallel assembly line balancing problem with type-I (G-PALBP-I) to minimize the number of stations under the major constraints and restrictions of the PALs.
Design/methodology/approach: A manufacturing system with parallel assembly lines (PALs) consists of at least two assembly lines placed next to each other in the facility layout. To design real-life PAL applications, the processing durations of the tasks may not always be fixed due to workers getting tired or making mistakes. In addition, the variability in customer demands may also affect the cycle duration called the total processing duration of a station. To better reflect the real-life applications of PALs, task and cycle times are expressed with grey system theory and grey numbers. A binary integer linear programming model is proposed to solve the G-PALBP-I.
Findings: The proposed model is implemented to the PAL systems designed by using a simple assembly line data in the literature. The results show that considering precedence relationships and variability in task and cycle durations provides a more flexible and consistent perspective.
Originality/value: The grey system theory and grey numbers, to the best of the authors’ knowledge, have not been considered to describe the uncertainty of task and cycle times in PALBPs. Therefore, this study provides important insight to both researchers and decision-makers in practice.

EES_2025_Volume_5_Issue_1

Corresponding Author:

Authors:

DOI Number https://doi.org/10.52924/PDTC4374

Received: 08.02.2025

Accepted: 08.02.2025

Published: 08.02.2025

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EES_2025_Volume_5_Issue_1

Summary:
Energy, Environment, and Storage papers consider the prospects of energy technologies, environment, materials, process control, and industrial systems. The Energy, Environment, and Storage will be published 3 times per year.

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