Subjects -> ENGINEERING (Total: 2688 journals)
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    - ENGINEERING (1325 journals)
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    - INDUSTRIAL ENGINEERING (98 journals)
    - MECHANICAL ENGINEERING (115 journals)

ENGINEERING (1325 journals)            First | 1 2 3 4 5 6 7 | Last

Showing 601 - 800 of 1205 Journals sorted alphabetically
International Journal of Quality Assurance in Engineering and Technology Education     Full-text available via subscription   (Followers: 3)
International Journal of Quality Engineering and Technology     Hybrid Journal   (Followers: 4)
International Journal of Quantum Information     Hybrid Journal   (Followers: 6)
International Journal of Rapid Manufacturing     Hybrid Journal   (Followers: 3)
International Journal of Recent Contributions from Engineering, Science & IT     Open Access  
International Journal of Reliability, Quality and Safety Engineering     Hybrid Journal   (Followers: 14)
International Journal of Renewable Energy Technology     Hybrid Journal   (Followers: 8)
International Journal of Robust and Nonlinear Control     Hybrid Journal   (Followers: 10)
International Journal of Science and Innovative Technology     Open Access  
International Journal of Science Engineering and Advance Technology     Open Access  
International Journal of Sediment Research     Full-text available via subscription   (Followers: 2)
International Journal of Self-Propagating High-Temperature Synthesis     Hybrid Journal  
International Journal of Service Science, Management, Engineering, and Technology     Full-text available via subscription   (Followers: 2)
International Journal of Signal and Imaging Systems Engineering     Hybrid Journal  
International Journal of Six Sigma and Competitive Advantage     Hybrid Journal   (Followers: 4)
International Journal of Social Robotics     Hybrid Journal   (Followers: 3)
International Journal of Software Engineering and Knowledge Engineering     Hybrid Journal   (Followers: 6)
International Journal of Space Science and Engineering     Hybrid Journal   (Followers: 13)
International Journal of Speech Technology     Hybrid Journal   (Followers: 7)
International Journal of Spray and Combustion Dynamics     Full-text available via subscription   (Followers: 15)
International Journal of Student Project Reporting     Hybrid Journal   (Followers: 4)
International Journal of Surface Engineering and Interdisciplinary Materials Science     Full-text available via subscription   (Followers: 1)
International Journal of Surface Science and Engineering     Hybrid Journal   (Followers: 6)
International Journal of Sustainable Engineering     Hybrid Journal   (Followers: 4)
International Journal of Sustainable Lighting     Open Access  
International Journal of Sustainable Manufacturing     Hybrid Journal   (Followers: 4)
International Journal of Systems and Service-Oriented Engineering     Full-text available via subscription  
International Journal of Systems Assurance Engineering and Management     Hybrid Journal  
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 6)
International Journal of Technoethics     Full-text available via subscription   (Followers: 2)
International Journal of Technology Management and Sustainable Development     Hybrid Journal   (Followers: 1)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 6)
International Journal of Telemedicine and Applications     Open Access   (Followers: 4)
International Journal of Thermal Sciences     Hybrid Journal   (Followers: 18)
International Journal of Thermodynamics     Open Access   (Followers: 15)
International Journal of Transportation Engineering     Open Access   (Followers: 2)
International Journal of Turbomachinery, Propulsion and Power     Open Access   (Followers: 23)
International Journal of Ultra Wideband Communications and Systems     Hybrid Journal  
International Journal of Vehicle Autonomous Systems     Hybrid Journal  
International Journal of Vehicle Design     Hybrid Journal   (Followers: 6)
International Journal of Vehicle Information and Communication Systems     Hybrid Journal   (Followers: 1)
International Journal of Vehicle Noise and Vibration     Hybrid Journal   (Followers: 6)
International Journal of Vehicle Safety     Hybrid Journal   (Followers: 3)
International Journal of Virtual Technology and Multimedia     Hybrid Journal   (Followers: 2)
International Journal of Wavelets, Multiresolution and Information Processing     Hybrid Journal  
International Journal on Artificial Intelligence Tools     Hybrid Journal   (Followers: 9)
International Journal on Smart Sensing and Intelligent Systems     Open Access  
International Nano Letters     Open Access   (Followers: 6)
International Review of Applied Sciences and Engineering     Full-text available via subscription  
International Scholarly Research Notices     Open Access   (Followers: 121)
International Scientific and Vocational Studies Journal     Open Access  
International Scientific Journal of Engineering and Technology (ISJET)     Open Access  
Inventions     Open Access  
Inventum     Open Access  
Inverse Problems in Science and Engineering     Hybrid Journal   (Followers: 3)
Investiga : TEC     Open Access  
Ionics     Hybrid Journal   (Followers: 2)
IPTEK The Journal for Technology and Science     Open Access  
Iranian Journal of Optimization     Open Access   (Followers: 2)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
IRBM News     Full-text available via subscription  
Ironmaking & Steelmaking     Hybrid Journal   (Followers: 4)
ISA Transactions     Full-text available via subscription  
ISSS Journal of Micro and Smart Systems     Hybrid Journal   (Followers: 3)
IT Professional     Full-text available via subscription   (Followers: 24)
Iteckne     Open Access  
J-ENSITEC : Journal Of Engineering and Sustainable Technology     Open Access   (Followers: 4)
Johnson Matthey Technology Review     Open Access  
Journal of Advanced College of Engineering and Management     Open Access  
Journal of Advanced Joining Processes     Open Access  
Journal of Advanced Manufacturing Systems     Hybrid Journal   (Followers: 5)
Journal of Aerodynamics     Open Access   (Followers: 27)
Journal of Aerosol Science     Hybrid Journal   (Followers: 7)
Journal of Aerospace Engineering     Full-text available via subscription   (Followers: 66)
Journal of Alloys and Compounds     Hybrid Journal   (Followers: 16)
Journal of Analytical and Applied Pyrolysis     Hybrid Journal   (Followers: 5)
Journal of Analytical Science & Technology     Open Access   (Followers: 4)
Journal of Analytical Sciences, Methods and Instrumentation     Open Access   (Followers: 4)
Journal of Applied Engineering Sciences     Open Access  
Journal of Applied Physics     Hybrid Journal   (Followers: 69)
Journal of Applied Research and Technology     Open Access  
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences     Open Access   (Followers: 4)
Journal of Architectural and Engineering Research     Open Access   (Followers: 3)
Journal of Architectural Engineering     Full-text available via subscription   (Followers: 4)
Journal of Automation and Control     Open Access   (Followers: 9)
Journal of Aviation Technology and Engineering     Open Access   (Followers: 10)
Journal of Biological Dynamics     Open Access   (Followers: 1)
Journal of Biomedical Science     Open Access   (Followers: 4)
Journal of Biomolecular NMR     Hybrid Journal   (Followers: 6)
Journal of Biosciences     Open Access   (Followers: 1)
Journal of Building Pathology and Rehabilitation     Hybrid Journal  
Journal of Catalysis     Hybrid Journal   (Followers: 11)
Journal of Catalyst & Catalysis     Full-text available via subscription   (Followers: 2)
Journal of Central South University     Hybrid Journal   (Followers: 1)
Journal of Chemical and Petroleum Engineering     Open Access   (Followers: 1)
Journal of China Coal Society     Open Access  
Journal of China Universities of Posts and Telecommunications     Full-text available via subscription  
Journal of Cleaner Production     Hybrid Journal   (Followers: 27)
Journal of Coastal and Riverine Flood Risk (JCRFR)     Open Access   (Followers: 1)
Journal of Cold Regions Engineering     Full-text available via subscription   (Followers: 3)
Journal of Combinatorial Designs     Hybrid Journal   (Followers: 4)
Journal of Combustion     Open Access   (Followers: 40)
Journal of Computational and Nonlinear Dynamics     Full-text available via subscription   (Followers: 6)
Journal of Computational and Theoretical Nanoscience     Full-text available via subscription  
Journal of Computational Biology     Hybrid Journal   (Followers: 9)
Journal of Computational Design and Engineering     Open Access   (Followers: 1)
Journal of Computational Electronics     Hybrid Journal   (Followers: 5)
Journal of Computational Multiphase Flows     Open Access   (Followers: 1)
Journal of Computing and Information Science in Engineering     Full-text available via subscription   (Followers: 1)
Journal of Coupled Systems and Multiscale Dynamics     Full-text available via subscription  
Journal of Dairy Science     Open Access   (Followers: 12)
Journal of Delta Urbanism     Open Access   (Followers: 2)
Journal of Display Technology     Hybrid Journal   (Followers: 3)
Journal of Dynamic Systems, Measurement, and Control     Full-text available via subscription   (Followers: 14)
Journal of Dynamical and Control Systems     Hybrid Journal   (Followers: 7)
Journal of Earthquake Engineering     Hybrid Journal   (Followers: 14)
Journal of Elasticity     Hybrid Journal   (Followers: 7)
Journal of Electroceramics     Hybrid Journal  
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 10)
Journal of Electronic Testing     Hybrid Journal   (Followers: 2)
Journal of Electronics Cooling and Thermal Control     Open Access   (Followers: 9)
Journal of Electrostatics     Hybrid Journal   (Followers: 2)
Journal of Energy Engineering     Full-text available via subscription   (Followers: 7)
Journal of Energy Resources Technology     Full-text available via subscription   (Followers: 4)
Journal of Engineering     Open Access  
Journal of Engineering     Open Access   (Followers: 1)
Journal of Engineering and Applied Science     Open Access  
Journal of Engineering and Technological Sciences     Open Access   (Followers: 2)
Journal of Engineering Design     Hybrid Journal   (Followers: 17)
Journal of Engineering Education     Hybrid Journal   (Followers: 7)
Journal of Engineering for Gas Turbines and Power     Full-text available via subscription   (Followers: 15)
Journal of Engineering Mathematics     Hybrid Journal   (Followers: 2)
Journal of Engineering Mechanics     Full-text available via subscription   (Followers: 16)
Journal of Engineering Physics and Thermophysics     Hybrid Journal   (Followers: 2)
Journal of Engineering Research     Open Access   (Followers: 1)
Journal of Engineering Research and Reports     Open Access  
Journal of Engineering Technology and Applied Sciences     Open Access  
Journal of Engineering Thermophysics     Hybrid Journal   (Followers: 4)
Journal of Engineering, Design and Technology     Hybrid Journal   (Followers: 17)
Journal of Engineering, Project, and Production Management     Open Access  
Journal of Environmental & Engineering Geophysics     Hybrid Journal   (Followers: 2)
Journal of Environmental Engineering     Full-text available via subscription   (Followers: 49)
Journal of Environmental Engineering and Landscape Management     Open Access   (Followers: 8)
Journal of Environmental Engineering and Science     Hybrid Journal   (Followers: 2)
Journal of Experimental Nanoscience     Hybrid Journal  
Journal of Fire Sciences     Hybrid Journal   (Followers: 6)
Journal of Flood Risk Management     Hybrid Journal   (Followers: 14)
Journal of Flow Control, Measurement & Visualization     Open Access   (Followers: 1)
Journal of Fluids Engineering     Full-text available via subscription   (Followers: 30)
Journal of Fourier Analysis and Applications     Hybrid Journal   (Followers: 3)
Journal of Fuel Cell Science and Technology     Full-text available via subscription   (Followers: 2)
Journal of Functional Analysis     Full-text available via subscription   (Followers: 3)
Journal of Fundamental and Applied Sciences     Open Access  
Journal of Geological Research     Open Access   (Followers: 1)
Journal of Geotechnical and Geoenvironmental Engineering     Full-text available via subscription   (Followers: 30)
Journal of Geotechnical Engineering     Full-text available via subscription   (Followers: 4)
Journal of Geovisualization and Spatial Analysis     Hybrid Journal  
Journal of Global Optimization     Hybrid Journal   (Followers: 6)
Journal of Graduate School of Natural and Applied Sciences of Mehmet Akif Ersoy University     Open Access  
Journal of Hazardous Materials Advances     Open Access  
Journal of Healthcare Engineering     Open Access   (Followers: 3)
Journal of Heat Transfer     Full-text available via subscription   (Followers: 66)
Journal of Humanitarian Engineering     Open Access   (Followers: 1)
Journal of Hydraulic Engineering     Full-text available via subscription   (Followers: 27)
Journal of Hyperspectral Remote Sensing     Open Access   (Followers: 23)
Journal of Imaging     Open Access   (Followers: 3)
Journal of Industrial and Production Engineering     Hybrid Journal   (Followers: 4)
Journal of Industrial Engineering and Management     Open Access   (Followers: 5)
Journal of Industrial Safety Engineering     Full-text available via subscription   (Followers: 6)
Journal of Inequalities and Applications     Open Access  
Journal of Infrared, Millimeter and Terahertz Waves     Hybrid Journal   (Followers: 3)
Journal of Infrastructure Preservation and Resilience     Open Access   (Followers: 1)
Journal of Institute of Science and Technology     Open Access  
Journal of Intelligent and Connected Vehicles     Open Access   (Followers: 1)
Journal of Intelligent Systems : Theory and Applications     Open Access  
Journal of International Maritime Safety, Environmental Affairs, and Shipping     Open Access   (Followers: 1)
Journal of Iron and Steel Research International     Hybrid Journal   (Followers: 7)
Journal of Irrigation and Drainage Engineering     Full-text available via subscription   (Followers: 24)
Journal of King Saud University - Engineering Sciences     Open Access  
Journal of KONBiN     Open Access   (Followers: 4)
Journal of Liquid Chromatography & Related Technologies     Hybrid Journal   (Followers: 7)
Journal of Management in Engineering     Full-text available via subscription   (Followers: 9)
Journal of Manufacturing Science and Engineering     Full-text available via subscription   (Followers: 32)
Journal of Manufacturing Systems     Full-text available via subscription   (Followers: 3)
Journal of Manufacturing Technology Management     Hybrid Journal   (Followers: 3)
Journal of Mechanical Design and Testing     Open Access   (Followers: 4)
Journal of Mechatronics     Full-text available via subscription   (Followers: 3)
Journal of Mega Infrastructure & Sustainable Development     Hybrid Journal  
Journal of Metallurgy     Open Access   (Followers: 8)
Journal of Mining Institute     Open Access  
Journal of Motor Behavior     Hybrid Journal   (Followers: 8)
Journal of Multivariate Analysis     Hybrid Journal   (Followers: 15)
Journal of Nanoengineering and Nanomanufacturing     Full-text available via subscription  
Journal of Nanoparticle Research     Hybrid Journal   (Followers: 3)
Journal of Nanoscience     Open Access  
Journal of Nanoscience and Nanotechnology     Full-text available via subscription   (Followers: 8)
Journal of NanoScience, NanoEngineering & Applications     Full-text available via subscription  
Journal of Nanotechnology     Open Access   (Followers: 10)
Journal of Nanotechnology in Engineering and Medicine     Full-text available via subscription   (Followers: 4)

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Journal of Graduate School of Natural and Applied Sciences of Mehmet Akif Ersoy University
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 1309-2243
Published by Mehmet Akif Ersoy ├ťniversitesi Homepage  [5 journals]
  • Determination of Chrysomelidae (Coleoptera) Species and Host Plants in
           Vegetable Areas of Burdur Province

    • Authors: Ebru Gül ASLAN; Keriman VERGİLİ BİLKAY
      Abstract: The study was carried out between the years 2019-2020 in order to determine the Chrysomelidae species and their host plants in the vegetable fields of greenhouses, gardens, and open fields located in the central district of Burdur province. As a result of 366 samples examined; 18 species belonging to 5 genera from Galerucinae subfamily, 2 species belonging to 2 genera from Chrysomelinae subfamily, and 1 species from Criocerinae subfamily were identified. Information about local distributions was added for each species. In addition, host plant relationships of the species that can be determined based on observations or previous literature information on host plants were given. Among the determined species Chaetocnema delarouzei (Brisout), Epitrix hirtipennis (Illiger), Epitrix pubescens (Koch), Longitarsus pellucidus (Foudras), Phyllotreta ochripes (Marsham), Gastrophysa polygoni (Linnaeus), Oulema melanopus (Linnaeus) and Leptinotarsa decemlineata (Say) were recorded for the first time from Burdur province with this study.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Effect of Insecticide Application on Aphis gossypii (Hemiptera: Aphididae)
           Population in Cotton Field According to Irrigation Time

    • Authors: Alime BAYINDIR EROL; Mehmet Sinan ARUSOĞLU, Ali Kemal BİRGÜCÜ
      Abstract: Aphis gossypii (Hemiptera: Aphidididae), which is harmful to the cotton plant, causes economic damage by sucking the buds and leaves of the plant with its stinging-sucking mouth structure. There are many control methods to reduce the damage of this pest on cotton below the economic damage threshold. One of them is chemical control method. In this study, the effect of insecticide application on the population density of A. gossypii to irrigation duration in cotton areas was investigated. The study was carried out in Eyyübiye district of Şanlıurfa province in 2019. The experiment was carried out on 150 decares, 10 decares of this area was divided into 2 blocks and insecticide application with Acetamiprid active ingredient was applied to the irrigation duration. The experiments were carried out with 20 replications and counts were made according to the results of the insecticide application. As a result, it was observed that the insecticide application applied to the cotton aphid population before irrigation was more successful. The results point out that more successful chemical control can be made against A. gossypii with the insecticide applied before irrigation.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Determination of Some Important Viruses in Cowpea (Vigna unguiculata L.)
           Seeds from Isparta and Antalya Provinces

    • Authors: Handan ÇULAL KILIÇ; Leyla DOĞUTAŞ, Ebru YILAN
      Abstract: This study was carried out to detect the presence of seed borne viruses in cowpea seeds collected from Isparta and Antalya provinces during 2016-2017. The seed samples were tested by Double Sandwich Enzyme Linked Immunosorbent Assay (DAS-ELISA) for Bean common mosaic virus (BCMV) and Cowpea mild mottle virus (CpMMV). Based on the results, the seed samples were infected with BCMV and CpMMV. Infection ratio for BCMV and CpMMV was determined as 22.22% and 11.11% respectively. The mixed infection of both viruses with a rate of 2.22% was detected in only two of the samples tested. Our knowledge CpMMV was firstly reported at cowpea plants in Turkey.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Hydrogeochemical Properties and Health Risk Asessment of Drinking Water
           Sources in Antalya Province, Turkey

    • Authors: Şehnaz ŞENER; Sıla BEKTAŞ
      Abstract: In this study, hydrogeochemical properties of drinking water resources of Antalya province were examined and health risk assessment was performed. The hydrogeochemical properties, usability and quality status of the waters were examined using the analysis results of drinking water taken from pump stations and springs in May (2020) and October (2020). The waters in the region are Ca-CO3 and Ca-Mg-HCO3 waters. The analysis results of the waters were compared with the drinking water limit values determined by TS-266 (2005) and WHO (2011). According to TS-266, it has been determined that the waters are generally drinkable. However, it was determined that the waters exceeded the WHO (2011) limit values in terms of Mg, HCO3 and TDS values. The "Health risk assessment method" developed by USEPA was used to assess the health risk of the waters and determine their effects on human health. It has been determined that the waters in the study area do not pose a serious risk for human health, but the As content of the waters taken from the tanks is partially high. In addition, it is not recommended to consume these waters, especially by children.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Meteorological Drought Analysis Using Precipitation Based Different
           Indices: The Case Study of Isparta, Turkey

    • Authors: Erhan ŞENER; Ayşen DAVRAZ
      Abstract: Drought, the effects of which are starting to be felt in increasing amounts today, is one of the most important natural disasters that threaten life. It is extremely important to regionally investigate the drought, which is expected to have intense effects, especially in the Mediterranean belt, and to develop adaptation strategies. Within the scope of this study, drought analysis for Isparta province was carried out with different index methods by using long-term meteorological observation data of Isparta State Meteorology Station (DMI). According to the results of the drought analysis performed at different time scales using Standardized Precipitation Index (SPI), Rainfall Anomaly Index (RAI), Percent of Normal Precipitation (PNI) methods, it was determined that extreme and severe dry periods were experienced in the region in 2008-2009. According to the analyzes made on a 1-month time scale, an extremely dry period has been experienced in 24 different time periods with the standardized Precipitation Index, 43 with the Rainfall Anomaly Index, and 234 with the Percent of Normal Precipitation. In addition, it was determined that there was a strong positive correlation between these indices. Similar results were obtained in meteorological drought analyzes performed at different time scales, especially using the SPI, RAI and PNI indices.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Electrochemical Biosensor Applications for Food Contaminants Analysis

    • Authors: Merve MUTİ İSTEK; Selda BULCA
      Abstract: Various contaminations caused by food contaminants such as pathogenic bacteria, heavy metal ions, mycotoxins, antibiotics and pesticides pose serious threats to food safety and human health. The frequent occurrence of food safety problems as a result of food contamination has become a concern for both consumers and the food industry. Many qualitative and quantitative detection methods have been developed to control and prevent food contamination problems. These methods include analysis methods such as Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC). However, due to the disadvantages of these methods such as being costly and complex, requiring skill, taking time, and pre-processing the samples, biosensor techniques have become more preferred methods in food contamination analysis in recent years compared to others. In this study, electrochemical biosensor applications developed for food contamination analysis in recent years have been investigated and various informations are given.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Analysis of a Hybrid Whale Optimization Algorithm for Traveling Salesman
           Problem

    • Authors: Mehmet Fatih DEMİRAL
      Abstract: Whale Optimization Algorithm (WOA) is a fairly new algorithm developed in 2016. WOA was applied to continuous optimization problems and engineering problems in the literature. However, WOA demonstrates lower performance than others in traveling salesman problems. Therefore, in this study, an application of the hybrid algorithm (WOA+NN) has been done in the traveling salesman problem. A set of classical datasets which have cities scale ranged from 51 to 150 was used in the application. The results show that the hybrid algorithm (WOA+NN) outperforms AS (Ant system), WOA, GA, and SA for 50% of all datasets. Ant system (AS) is the second algorithm that is better than other metaheuristics for 40% of all datasets. In addition, it was given that a detailed analysis presents the number of best, worst, average solutions, standard deviation, and the average CPU time concerning meta-heuristics. The metrics stress that the hybrid algorithm (WOA+NN) demonstrates a performance rate over 50% in finding optimal solutions. AS (Ant system) is better at 40% of all optimal solutions. Finally, the hybrid algorithm solves the discrete problem in reasonable times in comparison to other algorithms for medium-scale datasets.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • An Edge Preserving Image Denoising Framework Based on Statistical Edge
           Detection and Bilateral Filter

    • Authors: Ebru AYDOGAN DUMAN
      Abstract: The task of reducing noise from an image is known as image denoising. Although there are various methods and algorithms proposed in the literature, the methods still have limitations. The approaches generally either fail to reduce noise adequately or cause to be lost while effectively reducing noise. Conventional methods have poor performance when considering the success of preserving region boundaries and small structures. Conversely, modern techniques are more effective to smooth images without over smoothing edge details. To address these deficiencies and benefits, in this paper, we aim to develop a framework, which is capable of detecting whether a pixel is a part of edges or textures in an image so the framework can decide which filter should be used depending on region information. The Rank Order Test Method is used to detect image edges. In this way, we determine both which neighbors should be included to build a filter mask in the calculation for each pixel and which filter method should be implemented. We have compared the performance of Bilateral Filter-based methods. Experiments demonstrate that the proposed framework outperforms in terms of both PSNR, SSIM and visual perception for the noise with standard deviations 10, 30, 50. While the average PSNR value was 30.33 DB for the proposed model, the method with the closest result achieved an average score of 28.33 DB.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Determination of the Effect of the Air Gap Length of a Switched Reluctance
           Motor on Radial and Tangential Forces by using Maxwell Stress Tensor
           Method

    • Authors: Asım Gökhan YETGİN
      Abstract: Switched Reluctance Motors (SRMs) have been used frequently in industrial applications in recent years. Especially electric vehicles and domestic applications are also encountered. Although SRM is being used so widely, one of the biggest disadvantages is the torque ripple that occur. In order to reduce the torque ripple, it is tried to be reduced by making improvements both during the design of the motor and in the control parts of the motor. Tangential force is effective in the formation of the torque. For this reason, determination and analysis of the force in this direction is of great importance for motors. In this study, the effect of the air gap length value of the switched reluctance motor on the radial and tangential force values was analysed using the maxwell stress tensor method. The optimal air gap length has been tried to be determined. Switched reluctance motor with 550 W, 8/6 pole numbers are used. Radial and tangential magnetic flux density values and force values of each motor model were obtained. According to the results, it was determined that with the increase of the air gap length, both radial and tangential force values decreased.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Removal of Heavy Metals (Copper and Lead) Using Waste Eggshell with Two
           Different Species and Three Different Forms

    • Authors: Belgin TUNALI; Deniz TÜRKÖZ ALTUĞ, Neslihan KAYA KINAYTÜRK, Gökhan TÜZÜN
      Abstract: Since copper and lead are the most well-known heavy metals, eggshells were used to remove them from the aqueous solution. In this study, it was used two species; Quail (Coturnix coturnix japonica) and Greylag Goose (Anser anser) and three forms (pure, powdered and calcined forms) of eggshells. Using coupled plasma optical emission spectroscopy (ICP-OES), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) methods, it was investigated whether copper and lead were adsorbed on eggshells; in different species and different forms. According to ICP-OES results, it was observed that calcined eggshells retained more amount of Cu and Pb than uncalcined eggshells. By analyzing the FTIR results, even if the eggshells were in different forms, the characteristic bands of the eggshells were almost seen in samples. After the adsorption process, new bands arose in addition to the characteristic eggshell bands. These new bands are thought to be related to the Cu and Pb loading in the eggshell. With SEM images, it was observed that metal loaded accumulated on the outer surface of the eggshell. This result is also in good agreement with the EDS results.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • A Study on the Drought Analysis of the Salda Lake Basin Using the
           Standardized Precipitation Index Method

    • Authors: Anıl EVCİ; Candan ŞAHİN
      Abstract: Drought is an important event affecting the economic structure, sociocultural characteristics and ecological structure of a society. As a result of droughts dangerous situations are inevitable such as; drying of rivers and stream beds or damage to their flows, increased pressure on plants, decreased agricultural productivity and natural life activities, increased migration. It is possible to minimize these negative effects with certain size estimates of the drought. There are many methods used to describe the spatial and temporal characteristics and severity of drought. The most preferred of these methods is the "Standardized Precipitation Index (SPI). In the study, drought analysis was made for Salda Lake Basin using the Standardized Precipitation Index method. SPI values were calculated according to the data of Yesilova meteorology station in “1-3-6-12-24” month time periods. According to the results of the analysis, the most severe and longest droughts were observed between "1989-1995". When the droughts experienced in the last 10 years are evaluated, it is predicted that there may always be a drought close to normal in the area.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Evaluation of Some Recreation Areas of Denizli City in terms of Visual
           Landscape Quality

    • Authors: Gülten Ece TURGUT; Murat ZENGİN, Veysel DAĞ
      Abstract: In addition to the natural beauties offered by an area, its visual effect can affect the users' experience of the area. Determining and evaluating the quality in terms of visual landscape, protecting it and transferring it to the use of future generations and ensuring the continuity of the urban ecology have gained importance today. In this context, in the study, in which the perception of landscape is handled visually, 9 common usage types have been determined in 4 recreational areas (Çamlık Urban Forest, Cable Car/Bağbaşı Plateau, Ornaz Valley Picnic Area and Servergazi Recreation Area) that are used extensively in Denizli City. In order to evaluate the visual landscape quality of these uses, a survey was conducted through face-to-face interviews with 271 people in Merkezefendi and Pamukkale districts of Denizli City Center. The results obtained according to the level of appreciation were evaluated separately for each area and usage type. As a result of the evaluations, Ornaz Valley well-maintained surface/areas (87.5%) were the most preferred usage type, while the Cable Car/Bağbaşı Plateau well-maintained surfaces/areas (8.4%) were determined as the least favorite usage type. The aim of this study is to reveal whether the landscape structure of some recreation areas in Denizli is related to the perceived visual quality. As a result of the survey conducted for this purpose, it was determined that the landscape structure of the recreation areas of Denizli city is related to the perceived visual quality. As a result, considering the visual landscape quality evaluations according to the landscape perception and preferences of the users, suggestions have been developed for the existing and future recreation areas.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Web Based Survey Application with Blockchain

    • Authors: Hüseyin ASİLTÜRK; Ali Hakan IŞIK
      Abstract: With the Covid-19 pandemic, many requirements are carried out according to distance and social distance rules. These rules are applied in many areas such as education, work, market shopping. Polling or voting may also become mandatory in this process. Today, most of the surveys are carried out through electronic systems. Users can exchange own ideas without any contact with the created surveys. A survey system was created in our study. In the study, advanced security of the survey records was ensured by storing the data on the smart contract that is created in the ethereum network using the blockchain infrastructure. In the study, while ensuring the security of user data, ease of use was also provided. Web3.js, Bootstrap and MVC technologies were also used for web interfaces in the study. Data recording was done in two fields to ensure flow. One of them is ethereum-based smart contract and the other is MySQL database. User data first requests registration to the block network. During this time, the data is saved in the MySQL database so that the user does not wait until the record is registered in the network. Thus, the user does not have to wait and can continue with his transactions. When the user wants to control his data from the system, the control module is requested to compare the data in the ethereum test network with the MySQL data. If there is a problem after the comparison, the administrator checked the profile key and the record in the blockchain network, which provides full security, was accepted as correct. The study contributes to the literature by providing the highest level of security for the user data in the survey.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Thermodynamic Analysis of a Supercritical Brayton Cycle

    • Authors: Volkan CEYLAN; Arif Emre ÖZGÜR
      Abstract: Enormous strides have been made on gas turbine cycles in recent years. In addition, different practices of studies are being carried on in order to increase the cycle efficiency. In this study, CO2 (carbon dioxide or R744) and thermo dynamic analysis of supercritical Brayton cycles having air flow fluidity have separately been studied. Cyclical equipment working in supercritical conditions and its energy exergy performance at different cycles of parameters, and turbine inlet temperature and the effects of pressure, and compressor pressure ratio, and compressor efficiency on performance are surveyed examined. Analyze work is sorted out through a computer software (Engineering Equation Solver-EES).Supercritical CO2 (S-CO2) turbine effects on efficiency increase in power conversions are evaluated and its future in the energy sector is discussed.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Determination of Some Physical and Technological Characteristics on Cowpea

    • Authors: Ruziye KARAMAN; Cengiz TÜRKAY
      Abstract: In the study, it was aimed to determine the physical and technological characteristics of cowpea genotypes and varieties obtained from different regions of our country. In the research, 5 genotypes obtained from different regions of Turkey [Adana (B1), İzmir (B2), Mersin (B3), Mersin/Mut (B4) and Isparta (B5)] and 2 registered cultivars (Amazon and Sırma) were used. The study was carried out in a randomized block design with 3 replications in the experimental fields of Faculty of Agriculture, Isparta University of Applied Sciences in 2019 and 2020. In the study, years x genotype interaction was found to be statistically significant in the number of seeds per pod, seed length and volume characteristics. In the study, it is varyed between that number of seeds per pod was 6.37-8.77, pod length 13.18-16.69 cm, pod width 7.30-9.31 mm, seed length 8.35-10.14 mm, seed width 6.28-7.50 mm, dry weight 13.24-22.35 g, wet weight 25.04-46.02 g, swelling index 2.09-2.70, geometric mean diameter 6.51-7.54 mm, sphericity value 0.73-0.79, seed volume 155.12-233.67 mm3 surface area values 120.58-172.23 mm2. When the two-year average of genotypes and cultivars is evaluated, B1 genotype and Sırma cultivar come to the fore in the generally examined characteristics. As a result, it is predicted that the B1 genotype (Adana) will come to the forefront in breeding processes due to the importance of mechanization and consumers' choice in purchasing.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • An Efficient Mapping Tool Development for University Campuses: The Case
           Study of S├╝leyman Demirel University

    • Authors: Mustafa BATAR
      Abstract: The main purpose of this study is to design and develop “Süleyman Demirel University Campus Maps system (SDU Campus Maps)” with geographic information systems in order to create a campus information system. By the contribution of SDU Campus Maps, which is planned to be carried out, directions will be provided from one point to another within the university, and it will be convenient for visitors who do not know about Süleyman Demirel University campus. With this idea, it is based on the preparation of the environment so that directions can be made using the SDU campus map. With the help of this study, it has been aimed to provide contribution to the literature of both geographic information systems and mapping.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
 
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