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ENVIRONMENTAL ANALYSIS OF TOXIC ELEMENT WITH ICP-OES AND LIBS METHODS IN MARINE SEDIMENTS AROUND THE SEA OF MARMARA IN KAPIDAĞ PENINSULA kapidaĞ半岛马尔马拉海周围海洋沉积物中有毒元素的icp-oes和libs环境分析
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-04-15 DOI: 10.30931/JETAS.567378
Z. Yümün, E. Kam, M. Önce
{"title":"ENVIRONMENTAL ANALYSIS OF TOXIC ELEMENT WITH ICP-OES AND LIBS METHODS IN MARINE SEDIMENTS AROUND THE SEA OF MARMARA IN KAPIDAĞ PENINSULA","authors":"Z. Yümün, E. Kam, M. Önce","doi":"10.30931/JETAS.567378","DOIUrl":"https://doi.org/10.30931/JETAS.567378","url":null,"abstract":"In this work, the LIBS (Laser Induced Breakdown Spectroscopy) and ICP-OES technique has been applied to the determination of total contents of heavy metals (Fe, Zn, Al, Mn, Co, Cr, Cu, Ni, Na, Mg, K, Ca) in soil samples of Marmara Sea. In order to validate the technique, LIBS data were compared with data obtained on the same soil samples by application of conventional Inductively Coupled Plasma ICP spectroscopy. The partial agreement obtained between the two sets of data suggested the potential applicability of the LIBS technique to the measurement of heavy metals in soils. According to the results, it was seen that the elements determined by ICP-OES analysis were also determined by LIBS method. The LIBS method is an important and practical technique for determining the elements that are enriched with anthropogenic factors as well as the elements resulting from natural processes.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91177394","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
A Proper Generalization of Banach Principle for Nadler Type Mappings in Cone b-Metric Spaces Over Banach Algebras Banach代数上锥b-度量空间中Nadler型映射的Banach原理的适当推广
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-04-15 DOI: 10.30931/JETAS.510813
Faruk Develi, Muttalip Özavsar, S. Radenović
{"title":"A Proper Generalization of Banach Principle for Nadler Type Mappings in Cone b-Metric Spaces Over Banach Algebras","authors":"Faruk Develi, Muttalip Özavsar, S. Radenović","doi":"10.30931/JETAS.510813","DOIUrl":"https://doi.org/10.30931/JETAS.510813","url":null,"abstract":"In this paper, we first consider Nadler type contractions with the generalized Lipschitz constant k holding r(k)<1 instead of r(sk)<1 where r(k) is the spectral radius of k and s≥1 is the coefficient of the underlying cone b-metric spaces over Banach algebras. Then, we prove the corresponding fixed point theorem for such mappings. Finally, we compare our result with one obtained by the case r(sk)<1 by introducing some proper examples.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79351893","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
MONOTONICITY RESULTS AND ASSOCIATED INEQUALITIES FOR K-GAMMA FUNCTION 函数的单调性结果及相关不等式
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/aubtda.438249
I. Ege, E. Yıldırım
{"title":"MONOTONICITY RESULTS AND ASSOCIATED INEQUALITIES FOR K-GAMMA FUNCTION","authors":"I. Ege, E. Yıldırım","doi":"10.18038/aubtda.438249","DOIUrl":"https://doi.org/10.18038/aubtda.438249","url":null,"abstract":"In this work, we find -analogue of Gautschi inequality and obtain some monotonicity results for -gamma function. By the aid of these, we also get some more inequalities.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"35 7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80469884","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
EVALUATION OF THE EFFICIENCIES OF PUBLIC HIGH SCHOOLS IN IZMIR/TURKEY USING DEAHP APPROACH 用死亡方法评价土耳其伊兹密尔公立高中的效率
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/AUBTDA.474807
Ö. Gültekin, Reyhan Ayna
{"title":"EVALUATION OF THE EFFICIENCIES OF PUBLIC HIGH SCHOOLS IN IZMIR/TURKEY USING DEAHP APPROACH","authors":"Ö. Gültekin, Reyhan Ayna","doi":"10.18038/AUBTDA.474807","DOIUrl":"https://doi.org/10.18038/AUBTDA.474807","url":null,"abstract":"This study is carried out to assess the relative efficiencies of the Anatolian high schools in Izmir /Turkey and to guide inefficient educational institutions to become efficient. Firstly, efficiency measurement is performed by data envelopment analysis (DEA) model. Instead of assigning equal weights to the input and output variables, the analysis is repeated by assigning weights with the aid of the analytic hierarchy process(AHP) model. 3 input and 3 output variables are determined in the study and 47 Anatolian High Schools are analyzed. In Izmir, this study is important since it is the first study to assess the efficiencies of Anatolian high schools with data envelopment analytic hierarchy process (DEAHP) integrated model.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81549991","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
EVALUATING ETHYLENE PROPYLENE DIENE RUBBER FOR DYNAMIC APPLICATIONS INSTEAD OF NATURAL 评价乙丙二烯橡胶替代天然橡胶的动态应用
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/aubtda.410141
B. Karaağaç, A. Bayram, Haluk Konyali
{"title":"EVALUATING ETHYLENE PROPYLENE DIENE RUBBER FOR DYNAMIC APPLICATIONS INSTEAD OF NATURAL","authors":"B. Karaağaç, A. Bayram, Haluk Konyali","doi":"10.18038/aubtda.410141","DOIUrl":"https://doi.org/10.18038/aubtda.410141","url":null,"abstract":"Natural Rubber (NR) has been used in dynamic applications for many years. NR has satisfactory resilience, vibration, and fatigue properties. Besides all these good properties, NR has quite poor aging resistance; also its service temperature is limited to about 90 °C. Improving aging characteristics of NR is a common problem for both rubber industry and academy. Nowadays, especially automotive industry has been focused on thermally resistant static and dynamic rubber based materials in new generation automobiles because of current strict emission regulations. There are a lot of attempts to improve service conditions of NR however; they are not comparable yet, with alternative saturated rubbers such as EPDM. In this study, a new grade EPDM, which had a high molecular weight, narrow molecular weight distribution, and tailor-made chain structure, has been studied in terms of rheological, mechanical, dynamic mechanical, aging, and low temperature properties for target dynamic applications. Especially possible service temperature and dynamic performance of EPDM were compared to that of NR based reference. It was concluded that, EPDM may be an assertive competitor to NR, if its chain structure is modified correctly.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79553911","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
The Effect of a Residual Stress on Wave Propagation in a Fluid-Filled Thick Elastic Tube 充液厚弹性管中残余应力对波传播的影响
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/aubtda.466203
H. Erol
{"title":"The Effect of a Residual Stress on Wave Propagation in a Fluid-Filled Thick Elastic Tube","authors":"H. Erol","doi":"10.18038/aubtda.466203","DOIUrl":"https://doi.org/10.18038/aubtda.466203","url":null,"abstract":"The propagation of harmonic waves in an elastic tubes filled fluid is presented in this study. The tube material is considered to be incompressible, homogeneous, isotropic, initially axially stretched, inflated and thick elastic like human arteries. The viscous fluid is assumed to be incompressible and Newtonian. The differential equations of both materials are obtained in cylindrical coordinates. The analytical solutions of the equations of motion for the fluid, numerical solutions of the equations of motion for the tube have been found. The residual circumferential strain in the unloaded state of artery causes opening angle. The dispersion relation is presented as a function of the axial stretch, opening angle, internal pressure and material parameters. The effects of these parameters are shown and discussed on graphics.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83812116","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 ELECTROCOAGULATION AND ELECTROOXIDATION METHODS OF REAL TEXTILE WASTEWATER TREATMENT 电絮凝和电氧化法处理纺织废水的研究
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/AUBTDA.445716
Aydeniz Demir Delil, Nazım Gören
{"title":"INVESTIGATION OF ELECTROCOAGULATION AND ELECTROOXIDATION METHODS OF REAL TEXTILE WASTEWATER TREATMENT","authors":"Aydeniz Demir Delil, Nazım Gören","doi":"10.18038/AUBTDA.445716","DOIUrl":"https://doi.org/10.18038/AUBTDA.445716","url":null,"abstract":"Industrial wastewaters are becoming a bigger problem every day depending on the development of the industry and technology.  The textile industry discharges a large amount of wastewater containing non-biodegradable organic compounds and inorganic chemicals to the environment after various steps of production processing. Electrochemical technologies such as electrochemical oxidation, electrochemical reduction, indirect electro-oxidation with strong oxidants and electrocoagulation have received considerable attention for treating dye wastewaters during last decade. In this study, it was investigated the treatability of wastewater from textile industry by electrochemical treatment methods. Effect of important operating parameters such as, electrode type and combination (Al-Al, Fe-Fe, Al-Fe, Fe-Al, Pt-Fe), pH, reaction time and potential were investigated on removal efficiency of color and chemical oxygen demand (COD).  The study was performed by both electrocoagulation and electrooxidation method using real textile wastewater. The initial color, and COD concentrations of the wastewater were 395 Pt-Co and 1040 mg/L, respectively. At the end of the electrocoagulation experiments, concentrations of color and COD were decreased to 28 Pt-Co and 115 mg/L, respectively. Results showed that at pH 3 and 6 V potential, up to 93% color and 89% COD removal efficiencies were obtained in the reactor consisting of Fe-Fe electrodes. COD and color were removed at the rate of 88% and 92%, respectively in the study done with Al-Al couple at 10 V in natural pH (6.96). COD removal was achieved in the ratio of 93% at 6V as a result of the electrooxidation study with a couple of Pt-Fe electrodes. The study showed that the removal process was promising and it was reached to the discharge limit values for the color and COD with each electrode couple specified in the regulation.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83015721","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
APPLICATION OF MULTI-OBJECTIVE CONTROLLER TO OPTIMAL TUNING OF PID PARAMETERS FOR DIFFERENT PROCESS SYSTEMS USING CUCKOO SEARCH ALGORITHM 多目标控制器在不同过程系统pid参数最优整定中的应用
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-03-29 DOI: 10.18038/AUBTDA.476952
B. Ataşlar-Ayyıldız, O. Karahan
{"title":"APPLICATION OF MULTI-OBJECTIVE CONTROLLER TO OPTIMAL TUNING OF PID PARAMETERS FOR DIFFERENT PROCESS SYSTEMS USING CUCKOO SEARCH ALGORITHM","authors":"B. Ataşlar-Ayyıldız, O. Karahan","doi":"10.18038/AUBTDA.476952","DOIUrl":"https://doi.org/10.18038/AUBTDA.476952","url":null,"abstract":"A time domain performance criterion based on the multi-objective Pareto front solutions is proposed to tune the Proportional-Integral-Derivative (PID) controller parameters with the Cuckoo Search (CS) algorithm for different process systems: first order plus dead time (FOPDT) and high order dynamics. The proposed multi-objective cost function consists of conflicting objective functions including the overshoot, rise time, settling time and steady state error. In this paper, multi-objective genetic algorithm (MOGA) is used for obtaining the Pareto optimal solutions of the conflicting objective functions. The weights in the proposed multi-objective cost function are calculated by way of nondominated solutions of the obtained Pareto fronts based on the four conflicting objective functions. Also, the optimal tuning parameters of the PID controller are obtained by minimizing the integral based objective functions commonly introduced in the literature using the CS algorithm. The obtained results show that the CS optimized approach based on the proposed objective cost function outperforms than that of the integral based objective functions with higher efficiency and better quality no matter whether the process systems are employed under unload or load conditions.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"137 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75133328","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
EFFECT OF FREQUENCY CONTENT ON THE DYNAMIC PROPERTIES OF THE SAND 频率含量对砂土动力特性的影响
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-01-01 DOI: 10.18038/aubtda.459191
K. B. Afacan, E. Güler
{"title":"EFFECT OF FREQUENCY CONTENT ON THE DYNAMIC PROPERTIES OF THE SAND","authors":"K. B. Afacan, E. Güler","doi":"10.18038/aubtda.459191","DOIUrl":"https://doi.org/10.18038/aubtda.459191","url":null,"abstract":"Under the repeated loads of the soil, stress-strain and strength properties play an important role in solving the engineering problems. The stresses-deformation and strength properties of the soils under repeated loads, which are caused by the depression, are changing. As a result, deformations occur in the ground and structural damage occurs. Engineering properties must be known in order to minimize the damage of earthquakes. One of these parameters is an important factor in the effects of frequency earthquakes. In this study, the effects of frequencies obtained from different earthquakes on the dynamic characteristics of the ground were investigated. In the study, a dynamic triaxial test set was used to investigate the dynamic properties of soils. The variation of dynamic properties under the experimental conditions was investigated by loading with regular and irregular frequencies on the sand samples.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85302179","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
INVESTIGATION OF MACHINABILITY OF WELDED JOINTED HARDOX STEEL IN WEDM 电火花切割焊接硬质钢的可加工性研究
Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering Pub Date : 2019-01-01 DOI: 10.18038/aubtda.439123
M. Altug
{"title":"INVESTIGATION OF MACHINABILITY OF WELDED JOINTED HARDOX STEEL IN WEDM","authors":"M. Altug","doi":"10.18038/aubtda.439123","DOIUrl":"https://doi.org/10.18038/aubtda.439123","url":null,"abstract":"In this study machinibility of hardox steel plates (welded by plasma and Mag welding) was examined in WEDM. Two different ampere value and two different feed rate were determined for the two different welding types. Depending on these factors ,micro structures, micro hardnesses and resistivity/conductivity values (varying according to heat output) were obtained at the HAZ and WM zones. Then, each of the samples taken from both HAZ and WM zones were cut in the WEDM by using 2 levelled four different parameters. The purpose at this stage is to examine the cutting width (kerf) and surface roughness (Ra) values at the HAZ and WM zones with respect to varying micro structure, micro hardness and conductivity values. At the end of the study, the lowest kerf was obtained with the plasma welded samples whereas the lowest Ra values were obtained with the Mag welded samples . The samples at WM zone are in general are the ones welded by high conductivity sample Mag welding. Whereas in the HAZ zone the samples are the ones welded by high conductivity plasma welding.","PeriodicalId":7757,"journal":{"name":"Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77217268","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
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