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Manufacturing Nanostructured and Microstructured Chitosan Prepared By Milling Shrimp Shell 粉碎虾壳制备纳米和微结构壳聚糖的研究
European Journal of Engineering Science and Technology Pub Date : 2019-07-05 DOI: 10.33422/EJEST.2019.07.08
I. O. Brahim, M. Belmedani, Hadoun Hocine, A. Belgacem, A. Haddad
{"title":"Manufacturing Nanostructured and Microstructured Chitosan Prepared By Milling Shrimp Shell","authors":"I. O. Brahim, M. Belmedani, Hadoun Hocine, A. Belgacem, A. Haddad","doi":"10.33422/EJEST.2019.07.08","DOIUrl":"https://doi.org/10.33422/EJEST.2019.07.08","url":null,"abstract":"Nano-products are of great interest in the field of pharmaceutical, corrosion, medicine, and engineering. This research aimed to produce nano-chitosan. Nanocrystallite. Shrimp shells have been prepared by using a high-energy planetary ball with optimal rotational speed. The raw material was subjected to standard chemical processing for chitin extraction, followed by deacetylation to obtain nanocrystallite chitosan, which is characterized by Scanning Electron Microscope SEM Fourier, Transform Infrared Spectrometry FT-IR and X-ray diffraction (XRD).","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"33 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133063253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of 3D-printing Parameters on Mechanical Properties of PLA defined in the Static Bending Test 静态弯曲试验中3d打印参数对PLA力学性能的影响
European Journal of Engineering Science and Technology Pub Date : 2019-01-25 DOI: 10.33422/ejest.2019.01.52
P. Żur
{"title":"Influence of 3D-printing Parameters on Mechanical Properties of PLA defined in the Static Bending Test","authors":"P. Żur","doi":"10.33422/ejest.2019.01.52","DOIUrl":"https://doi.org/10.33422/ejest.2019.01.52","url":null,"abstract":"","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130785094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
SWOT ANALYSIS OF ENERGY POLICY 2013 OF PAKISTAN 巴基斯坦2013年能源政策的Swot分析
European Journal of Engineering Science and Technology Pub Date : 2019-01-23 DOI: 10.33422/EJEST.2019.01.53
M. Irfan
{"title":"SWOT ANALYSIS OF ENERGY POLICY 2013 OF PAKISTAN","authors":"M. Irfan","doi":"10.33422/EJEST.2019.01.53","DOIUrl":"https://doi.org/10.33422/EJEST.2019.01.53","url":null,"abstract":"1,4 Department of Electrical Engineering, University of Gujrat, Hafiz Hayat Campus, Gujrat. naeemkalair@uog.edu.pk 2 Faculty of Electrical Engineering, University of Engineering and Technology Lahore. engr.suleman.grt@gmail.com 3 US Pakistan Center for Advanced Studies in Energy, National University of Science and Technology, Islamabad. u.sarwar92@gmail.com, 5 Department of Electrical Engineering, University of Management and Technology, Sialkot Campus, Sialkot.muhammad.shoaib@skt.umt.edu.pk.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"422 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123579457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Finite Elements Analysis of PLA 3D-printed Elements and Shape Optimization PLA 3d打印元件的有限元分析及形状优化
European Journal of Engineering Science and Technology Pub Date : 2019-01-22 DOI: 10.33422/EJEST.2019.01.51
P. Żur
{"title":"Finite Elements Analysis of PLA 3D-printed Elements and Shape Optimization","authors":"P. Żur","doi":"10.33422/EJEST.2019.01.51","DOIUrl":"https://doi.org/10.33422/EJEST.2019.01.51","url":null,"abstract":"","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129661373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Estimation of the Intrazonal Travel Time of Different Modes for the Home-Based School Trips Using Regression Model 基于回归模型的家庭学校出行不同模式的区域内出行时间估算
European Journal of Engineering Science and Technology Pub Date : 2019-01-20 DOI: 10.33422/ejest.2019.01.50
Yavuz Delice
{"title":"Estimation of the Intrazonal Travel Time of Different Modes for the Home-Based School Trips Using Regression Model","authors":"Yavuz Delice","doi":"10.33422/ejest.2019.01.50","DOIUrl":"https://doi.org/10.33422/ejest.2019.01.50","url":null,"abstract":"Yavuz Delice, Halit Özen, and Ehsan Amirnazmiafshar 1Yalova University, Department of Transportation Engineering, Faculty of Engineering, Yalova, 77200, Turkey. 2 Yildiz Technical University, Department of Civil Engineering, Faculty of Civil Engineering, Istanbul, 34220, Turkey. 3 Istanbul Technical University, Department of Transportation Engineering, Faculty of Civil Engineering, Istanbul, 34469, Turkey.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115211739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
TRAMWAY DWELL TIME ESTIMATION AND ANALYSIS BY USING MULTIPLE LINEAR REGRESSION METHOD 基于多元线性回归方法的有轨电车停留时间估计与分析
European Journal of Engineering Science and Technology Pub Date : 2019-01-16 DOI: 10.33422/EJEST.2019.01.49
Ehsan Amirnazmiafshar
{"title":"TRAMWAY DWELL TIME ESTIMATION AND ANALYSIS BY USING MULTIPLE LINEAR REGRESSION METHOD","authors":"Ehsan Amirnazmiafshar","doi":"10.33422/EJEST.2019.01.49","DOIUrl":"https://doi.org/10.33422/EJEST.2019.01.49","url":null,"abstract":"Dwell time is a significant issue to designate the accurate arrival time and scheduling public transportation system in cities. In the literature, dwell time of bus or light rail transit was studied, but studies focusing on Tramway dwell time are rare. Tramway is one of the most common public transportation systems around the world. In this paper, the Tramway dwell time is modeled by using multiple linear regression analysis. The data are collected from the kabataş bağcılar tramway in Istanbul-Turkey. The line covers a lot of touristic allocations and important locations in the city and generally, the passenger demand is very high. The number of observations from eleven stations of this line is 171. Two separate models for weekdays and weekends include wagon occupancy, platform occupancy, the number of people who are alighting and boarding, time spent by the driver and peak hours and off-peak hours on weekdays and on weekends. The results show that between the dummy variables, the platform occupancy in the high level has more influence on tramway dwell time than wagon occupancy in the high level on weekdays, but it is vice versa on weekends. Between continues variables, in both weekdays and weekends models, the time spent by the driver has the most impact on tramway dwell time. The number of passengers who are alighting on weekdays and number of passengers who are boarding on the weekends has the least effect on the tramway dwell time. In this study, by considering the results, there are some significant policies suggested for policymakers to reduce the dwell time of tramway. Keyword: Dwell time; tramway; public transport; real time; regression analysis","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132850697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Complex and thermodynamic properties of polar liquids using time domain reflectometry in Microwave frequency 微波频率下用时域反射法研究极性液体的复杂性质和热力学性质
European Journal of Engineering Science and Technology Pub Date : 2019-01-12 DOI: 10.33422/ejest.2019.01.48
Shagufta Tabassum
{"title":"Complex and thermodynamic properties of polar liquids using time domain reflectometry in Microwave frequency","authors":"Shagufta Tabassum","doi":"10.33422/ejest.2019.01.48","DOIUrl":"https://doi.org/10.33422/ejest.2019.01.48","url":null,"abstract":"The complex permittivity spectra and thermodynamic properties of 1,2-dichloroethane (DE) and n,n-dimethylformamide (DMF) polar liquids has been obtained at 15°C temperature in the frequency range of 10 MHz to 30 GHz by using time domain reflectometry technique for 11 different concentrations of the system. Time dependent data is processed to obtained complex reflection coefficient spectra *(ω). Complex permittivity spectra is obtained from bilinear callibration method and this spectra gives information regarding dielectric dispersion (ɛʹ) and dielectric absorption (ɛʺ), which indicates the purity of the liquid mixture. The modified Bruggeman model is also a parameter which may be used an indicator of liquid 1 and 2 interactions. In binary mixture of polar liquids, there is a change in the energy of the system. This change in energy can be interpreted with thermodynamic parameters such as free energy of activation (G), molar enthalpy of activation (H) and molar entropy of activation (S).","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122679281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Insight on Stock Market using Data Mining 基于数据挖掘的股票市场洞察
European Journal of Engineering Science and Technology Pub Date : 2018-09-29 DOI: 10.33422/icarest.2018.09.50
Ashvi Rebecka
{"title":"Insight on Stock Market using Data Mining","authors":"Ashvi Rebecka","doi":"10.33422/icarest.2018.09.50","DOIUrl":"https://doi.org/10.33422/icarest.2018.09.50","url":null,"abstract":"A stock market is the aggregation of buyers and sellers of stocks, which represent ownership claims on businesses.Rise and Fall of stock prices are affected by many factors like Government policies, Institutional Buyers, Retail Buyers and many more.There are many algorithms that help investors to have a better insight of stock market.We use three best algorithms and get the average of it.We then show that we have achieved the maximum accuracy possible..","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125943320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of the tribological characteristic of bimetallic journal bearing with surface coating by cold spray process 用冷喷涂工艺改善双金属滑动轴承的摩擦学特性
European Journal of Engineering Science and Technology Pub Date : 2018-09-26 DOI: 10.33422/ICAREST.2018.09.35
Coşkun Yolcu
{"title":"Improvement of the tribological characteristic of bimetallic journal bearing with surface coating by cold spray process","authors":"Coşkun Yolcu","doi":"10.33422/ICAREST.2018.09.35","DOIUrl":"https://doi.org/10.33422/ICAREST.2018.09.35","url":null,"abstract":"Surface properties are important for materials that are in contact with each other. Especially when the lubrication conditions are inadequate, the properties of the materials are the main feature that determines the wear behaviour. Bimetal journal bearing materials are machine materials that are subjected to load and motion. For this reason, attempts are made to improve the wear behaviours of these materials and they are frequently investigated in the literature. In the present study, in order to improve the tribological characteristic of the steel backed copper based bimetallic material SAE 49 was coated with tin, lead and Al2O3 powders using cold spray process and the microstructure, hardness and wear properties of the samples were investigated. It was observed that the Al2O3 particles were homogeneously dispersed by the cold spray process. Increasing amount of the soft phases such as tin and lead caused decreasing in hardness. However, these soft phases that had solid lubricant properties in the structure and the hard phase such as Al2O3 improved the wear behaviour of the sample.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129377318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
INVESTIGATION OF THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF THIN 5083 ALUMINUM ALLOY PLATES WELDED BY DOUBLE PULSE GMAW METHOD 双脉冲gmaw法焊接5083铝合金薄板的组织与力学性能研究
European Journal of Engineering Science and Technology Pub Date : 2018-09-26 DOI: 10.33422/EJEST.2019.01.45
F. Kahraman, A. Kahraman, G. Gençer, Muammer Tüm
{"title":"INVESTIGATION OF THE MICROSTRUCTURES AND MECHANICAL PROPERTIES OF THIN 5083 ALUMINUM ALLOY PLATES WELDED BY DOUBLE PULSE GMAW METHOD","authors":"F. Kahraman, A. Kahraman, G. Gençer, Muammer Tüm","doi":"10.33422/EJEST.2019.01.45","DOIUrl":"https://doi.org/10.33422/EJEST.2019.01.45","url":null,"abstract":"In order to be able to use energy more efficiently, weight reduction solutions in machines, especially used in transportation, are sought by researchers. Aluminum alloys that are one of the light engineering alloys are commonly used in aerospace, automotive and sheet metal industry where the welding of thin plates is very important. Aluminum and its alloys have low weldability due to some characteristic properties such as high thermal conductivity, high electrical conductivity and the insulating oxide layer that has a very high melting temperature compared to aluminum. The weldability of thin aluminum plates is a much bigger problem. Thus, in this study, the thin EN AW-5083 H111 plates were welded by applying low heat input with a double pulse GMAW method. The effects of the used welding parameters on welding quality were investigated. Both macrography and micrography of the cross-sections of welded samples were investigated for metallographical examination by using optical microscopes (stereo and metal microscopes). The mechanical properties of samples were determined by hardness and tensile tests. In order to achieve the hardness distribution in the cross-sections of the welded samples, Vickers microhardness profiles test was carried out. It was observed that the pulse frequency of the current used in the welding process has significant effects on joint strength. HAZ broadened with an increase in pulse frequency. Thus, it has been observed that the joint strength was adversely affected due to the broadening of the inhomogeneous zones in the sample cross-section.","PeriodicalId":143710,"journal":{"name":"European Journal of Engineering Science and Technology","volume":"21 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120846276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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