International journal of engineering. Transactions A: basics最新文献_第6页

Fabrication of Spiral Stent with Superelastic/ Shape Memory Nitinol Alloy for Femoral Vessel 超弹性/形状记忆镍钛诺合金股血管螺旋支架的制备

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.14

S. Noroozi, S. K. Sadrnezhad

{"title":"Fabrication of Spiral Stent with Superelastic/ Shape Memory Nitinol Alloy for Femoral Vessel","authors":"S. Noroozi, S. K. Sadrnezhad","doi":"10.5829/ije.2017.30.07a.14","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.14","url":null,"abstract":"Stent is a metal mesh tube for opening the obstructed vessels of the body. Ni-Ti alloy is a suitable metal for fabrication of stent due to its potential for applying the appropriate stress and strain to the vessel walls. In this study, super-elastic Nitinol wire was used to build stent samples usable to open femoral vessel. Ageing was performed at 500°C for different periods of time to determine the most appropriate transformation temperatures and shape memory/superelasticity behavior of the sample. Mechanical and structural properties of the alloy were determined by differential scanning calorimetry (DSC), electron probe micro analysis (EPMA) and metallographic studies. Ability to stand vessel wall pressure was studied by crush test. Images of scanning electron microscope (SEM) showed that the surface integrity was not affected by strain. The artificial silicon vessel in Simulated Body Fluid (SBF) at 37°C was used for implanting of the crimped stent. The recovery of strain and exertion of stress to the vessel wall was investigated after removal of the stent from the catheter. doi: 10.5829/ije.2017.30.07a.14","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128583544","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

Managing Environmentally Conscious in Designing Closed-loop Supply Chain for the Paper Industry 造纸工业闭环供应链设计中的环境管理意识

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.13

A. Rahmani-Ahranjani, A. Bozorgi-Amiri, M. Seifbarghy, E. Najafi

引用次数: 8

An Integrated Approach for Collection Center Selection in Reverse Logistics 逆向物流中集采中心选择的集成方法

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.10

Armin Cheraghalipour, M. Paydar, M. Hajiaghaei-Keshteli

{"title":"An Integrated Approach for Collection Center Selection in Reverse Logistics","authors":"Armin Cheraghalipour, M. Paydar, M. Hajiaghaei-Keshteli","doi":"10.5829/ije.2017.30.07a.10","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.10","url":null,"abstract":"In this paper, a hybrid multi-criteria decision-making (MCDM)-method and mixed integer linear programming (MILP) approach in order to evaluation of the returned products' collectors along with their ordered quantities, is utilized. Firstly, the most important criteria of collection center in the car industry are identified. Then, in order to evaluate these proposed criteria, a hybrid Fuzzy Decision-Making Trial And Evaluation Laboratory (FDEMATEL)- evaluation of mixed qualitative and quantitative data (EVAMIX) approach is applied. By this method, the most important criteria and their weights along with collection centers' score are determined. In addition, an MILP mathematical model is proposed for selection of the best collection center and computation of ordering quantities. An efficient approach for collection center selection and a novel application of combined FDEMATEL, EVAMIX, and MILP model can be considered as the main contributions of this paper. It should be noted that, to measure the performance of this method a recycling company as a case study in Iran has considered which of this firm collects effete tire and ball bearings of cars. Implementation of this case study can be considered as the other contributions of this paper. At last, with help of obtained results the proper collection center and their ordered quantities are computed. In addition, for measure efficiency of the proposed model, some numerical example, in various dimensions is considered. Moreover, the managers of this industry with the help of a simple methodology can choose the appropriate suppliers.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134143974","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: 61

Durable Glass Fiber Reinforced Concrete with Supplimentary Cementitious Materials 含补充胶凝材料的耐久玻璃纤维增强混凝土

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.05

Badrinarayan Rath, S. Deo, G. Ramtekkar

{"title":"Durable Glass Fiber Reinforced Concrete with Supplimentary Cementitious Materials","authors":"Badrinarayan Rath, S. Deo, G. Ramtekkar","doi":"10.5829/ije.2017.30.07a.05","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.05","url":null,"abstract":"Durability of concrete structure in marine environments is a big issue for many decades due to chloride attack. Chloride penetrates the concrete structure and accelerates the corrosion process of reinforcement which decreases the life of those structures. Also shrinkage cracks in concrete play main role for chloride penetration through concrete surface. Many researchers tried to find easy and economical ways to obtain durable concrete in such marine region by use of supplementary cementitious material with proper curing regime. Also use of fiber in concrete may arrest the shrinkage cracks, decreasing the chloride permeability and increasing the durability of concrete. Durability of concrete with glass fiber and by replacement of cement and sand partially by supplementary cementitious material such as fly ash and pond ash, respectively is measured by conducting shrinkage test, bulk electrical resistivity, SEM and ultrasonic pulse velocity test. Based on various test result present research proposes an economical durable concrete with desired compressive strength by use of glass fiber and supplementary cementitious material.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"319 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132363074","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: 27

Energy and Second Law of Thermodynamics Analysis of Shower Cooling Tower with Variation in Inlet Air Temperature 随进气温度变化的淋浴式冷却塔能量及热力学第二定律分析

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.19

M. Zunaid, Q. Murtaza, Samsher

{"title":"Energy and Second Law of Thermodynamics Analysis of Shower Cooling Tower with Variation in Inlet Air Temperature","authors":"M. Zunaid, Q. Murtaza, Samsher","doi":"10.5829/ije.2017.30.07a.19","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.19","url":null,"abstract":"A shower cooling tower (SCT) operates without fill because of salt decomposition on the fill that leads to deterioration of conventional cooling tower performance. This study presents a two-dimensional mathematical model for energy and exergy analysis of multi-diameter droplets and air interaction along with the height of the forced draft SCT, to predict the exit condition of water droplet for industrial application. Different inlet air dry bulb temperatures (DBT) were used for the study and the model was validated with experimental results. At the inlet of the tower, ten different diameters of water droplets simultaneously were used at a given time for analysis and the droplet diameter model based on Rosin Rammler distribution. The result showed that thermal efficiency and second law efficiency relatively increased along the height of SCT with increase of the inlet air temperature. It was confirmed that maximum reduction in water droplet temperature along the height of SCT was achieved by minimum inlet air DBT. It was also noticed that exergy supplied by water was more than exergy absorbed by air and maximum destruction of total exergy took place at the beginning of air-water interaction.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115880157","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: 3

Testing Soccer League Competition Algorithm in Comparison with Ten Popular Meta-heuristic Algorithms for Sizing Optimization of Truss Structures 测试足球联赛竞赛算法与十种流行的元启发式桁架结构尺寸优化算法的比较

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.01

N. Moosaviana, H. Moosavian

{"title":"Testing Soccer League Competition Algorithm in Comparison with Ten Popular Meta-heuristic Algorithms for Sizing Optimization of Truss Structures","authors":"N. Moosaviana, H. Moosavian","doi":"10.5829/ije.2017.30.07a.01","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.01","url":null,"abstract":"Recently, many meta-heuristic algorithms are proposed for optimization of various problems. Some of them originally are presented for continuous optimization problems and some others are just applicable for discrete ones. In the literature, sizing optimization of truss structures is one of the discrete optimization problems which is solved by many meta-heuristic algorithms. In this paper, in order to discover an efficient and reliable algorithm for optimization of truss structures, a discrete optimizer, entitled Soccer League Competition (SLC) algorithm and ten popular and powerful solvers are examined and statistical analysis is carried out for them. The fundamental idea of SLC algorithm is inspired from a professional soccer league and based on the competitions among teams to achieve better ranking and players to be the best. For optimization purpose and convergence of the initial population to the global optimum, different teams compete to take the possession of the best rating positions in the league table and the internal competitions are taken place between players in each team for personal improvements. Recently, SLC as a multi-population algorithm with developed operators has been applied for optimization of various problems. In this paper, for demonstrating the performance of the different solvers for optimal design of truss structures, five numerical examples will be optimized and the results show that proposed SLC algorithm is able to find better solutions among other algorithms. In other words, SLC can discover new local optimal solutions for some examples where other algorithms fail to find that one. doi: 10.5829/ije.2017.30.07a.01","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114900765","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: 6

The Effect of Measurement Errors on the Performance of Variable Sample Size and Sampling Interval Control Chart 测量误差对变样本量和抽样间隔控制图性能的影响

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.09

H. Sabahno, A. Amiri

引用次数: 15

A New Approach in Developing Optimal Defrost/Demist Performance in a Passenger Car (TECHNICAL NOTE) 开发乘用车最佳除霜/除霜性能的新方法(技术说明)

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.18

R. Mehdipour, Z. Baniamerian, M. H. Saidi

引用次数: 2

Quadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions 正交调幅全光正交频分复用-密集波分复用-不同天气条件下的光无线通信系统

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.08

I. Murdas

引用次数: 2

Slip Velocity in Flow and Heat Transfer of Non-newtonian Fluids in Microchannels 微通道中非牛顿流体的滑移速度与传热

International journal of engineering. Transactions A: basics Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.07a.15

A. Sarabandi, A. J. Moghadam

{"title":"Slip Velocity in Flow and Heat Transfer of Non-newtonian Fluids in Microchannels","authors":"A. Sarabandi, A. J. Moghadam","doi":"10.5829/ije.2017.30.07a.15","DOIUrl":"https://doi.org/10.5829/ije.2017.30.07a.15","url":null,"abstract":"The steady-state fully-developed laminar flow of non-Newtonian power-law fluids is examined in a circular microchannel with slip boundary condition and under an imposed constant wall heat flux. Effects of slip as well as the hydrodynamic and thermal key parameters on heat transfer and entropy generation are investigated. The results reveal that increasing the Brinkman number and the flow behavior index both lead to increasing the entropy generation and decreasing the Nusselt number. In heating process, the temperature difference between the fluid and the wall decreases as the slip coefficient increases; similar trend may or may not be observed for cooling process, determined by the range of the slip coefficient as well as the Brinkman number. An increase in the slip coefficient leads to an increase in both the Nusselt number and the Bejan number, whereas it gives rise to a decrease in entropy generation. For each particular value of the slip coefficient, the Nusselt number approaches a specific value as the Brinkman number and/or the flow behavior index increases. An increase in the flow behavior index or a decrease in the slip coefficient results in incrementing the average entropy generation.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"419 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124204328","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: 5