Emerging Materials Research最新文献_第9页

Application of nuclear magnetic resonance/magnetic resonance imaging techniques to estimate proton relaxation parameters in various solvent at Earth field 核磁共振/磁共振成像技术在地球场各种溶剂中质子弛豫参数估计中的应用

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-09-01 DOI: 10.1680/jemmr.21.00180

H. Ovalıoğlu

引用次数: 1

Analysis of maximum power tracking methods in photovoltaic panels 光伏板最大功率跟踪方法分析

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-09-01 DOI: 10.1680/jemmr.22.00061

Ali Akdemir, Abdulhakim Karakaya

{"title":"Analysis of maximum power tracking methods in photovoltaic panels","authors":"Ali Akdemir, Abdulhakim Karakaya","doi":"10.1680/jemmr.22.00061","DOIUrl":"https://doi.org/10.1680/jemmr.22.00061","url":null,"abstract":"In the last century, the demand for energy has soared with the rapid development of technology and the human population. The fossil fuels such as coal, natural gas, oil, etc. used today to obtain energy have a limited lifespan. Therefore, the interest in renewable energy sources is increasing. Solar energy, which is one of these renewable energy sources, comes to the fore more than other renewable energy sources because the energy emitted instantly by the sun is so much greater than the energy consumed by the world in a year. Therefore, much research has been done to produce a greater amount of energy from the sun. This study examines the Maximum Power Point Tracking (MPPT) methods that are widely used today. The methods under review include; Constant Voltage, Short Circuit Current, Perturb and Observe, Fuzzy Logic, Incremental Conductance and Artificial Neural Networks. Of these methods, Perturb and Observe, Fuzzy Logic and Artificial Neural Networks have been analyzed using the PVSOL software, which is for making designs and simulations for photovoltaic systems. The analysis includes a comparison of the depreciation periods for the Standard Systems and the facilities where these control algorithms are used.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43796917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Calculation of gamma-ray buildup factors for some medical materials 某些医用材料γ射线积累因子的计算

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-09-01 DOI: 10.1680/jemmr.22.00051

Y. Y. Çelen, M. Sarihan, G. Almisned, H. Tekin, I. Ekmekci

{"title":"Calculation of gamma-ray buildup factors for some medical materials","authors":"Y. Y. Çelen, M. Sarihan, G. Almisned, H. Tekin, I. Ekmekci","doi":"10.1680/jemmr.22.00051","DOIUrl":"https://doi.org/10.1680/jemmr.22.00051","url":null,"abstract":"In recent years, novel materials with protective qualities against ionizing radiation have been discovered. Important concepts include the continued use of X-rays for diagnosis and treatment, particularly in the radiological energy range, as well as the calculation of the radiation attenuation properties of such materials, the build-up factor, and the attenuation coefficients. Radiation shielding is characterized by parameters such as linear attenuation coefficient (LAC, cm−1),.equivalent atomic number (Zeq), exposure buildup factors (EBF) and exposure absorption buildup factors (EABF). Radiation is often employed in the diagnosis and treatment of cancer and accurately calculating the absorbed dosage during radiation treatment, which is one of the most popular cancer treatments. It relies on accurate modeling of the radiation beams administered to the patient and their interaction with the environment in which they are absorbed. In this research, the shielding characteristics of water, fat, and bone related to human tissue are investigated. Using Phy-X/PSD software, the equivalent atomic number (Zeq), exposure buildup factor (EBF), and energy absorption buildup factor (EABF) were determined.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48598866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

The effect of stirrup spacing and hook angle on RC cantilever beams with iron chip waste 箍筋间距和弯钩角度对含铁屑钢筋混凝土悬臂梁的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-09-01 DOI: 10.1680/jemmr.22.00060

Muhammet Zeki Ozyurt, Omer Fatih Sancak

{"title":"The effect of stirrup spacing and hook angle on RC cantilever beams with iron chip waste","authors":"Muhammet Zeki Ozyurt, Omer Fatih Sancak","doi":"10.1680/jemmr.22.00060","DOIUrl":"https://doi.org/10.1680/jemmr.22.00060","url":null,"abstract":"In this study, the usability of industrial iron chip waste was investigated to provide recycling in the production of reinforced concrete cantilever beams with different stirrup spacings and hook angles. In the concrete produced for cantilever beams, aggregates not larger than 4 mm in diameter were reduced by 20% and replaced with iron chip waste. Cantilever beams are manufactured with stirrup spaces of 50, 100 and 150 mm. The hook angles of the stirrups are differentiated to be 90 and 135 degrees. The experimental setup was prepared in such a way that one side of the samples was fixed, and the other side was free. Load-displacement curves of cantilever beams were obtained. In the research, it was observed that although cantilever beams with 20% iron chips experienced a decrease in their strength compared to the reference beams, they increased their ductility values at all three different stirrup spaces. As the stirrup spacing widened, the ductility values decreased. However, the effect of iron chip additives on ductility has increased. Samples with a stirrup hook angle of 135 degrees increased both strength and ductility values compared to samples with a stirrup hook angle of 90 degrees.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44535335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing a finger joint biomechanics through dynamic hand model 通过动态手部模型开发手指关节生物力学

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.21.00182

V. Yegin, M. Onat

{"title":"Developing a finger joint biomechanics through dynamic hand model","authors":"V. Yegin, M. Onat","doi":"10.1680/jemmr.21.00182","DOIUrl":"https://doi.org/10.1680/jemmr.21.00182","url":null,"abstract":"The human hand is one of the main limbs in maintaining daily life activities. It functions as an interface between the outside world and the brain, such as positioning, moving, touching, feeling, and grasping objects. It can perform fine motor skills precisely, thanks to its high degree of freedom of hand and its complex and flexible structure. This study proposes a dynamic human hand model with 15 degrees of freedom for rehabilitation purposes, reflecting the aforesaid abilities with significant accuracy. For the finger biomechanics design, finger joint lengths, angular workspace ranges, and joint torques were determined experimentally. Besides, joint torques during finger extension/flexion movements were calculated with the SolidWorks (SW) motion analysis and Ansys static structural analysis. To identify finger joint relationships, the workspaces for all fingers were computed and visualized during flexion/extension movements. Unlike the literature, the hand model includes a biomechanics computational analysis approach that makes it easy to adapt to hand models. The search demonstrates that using optimum comparative data for design parameters and fingers workspace ranges yields a cost-effective result for manufacturing a precision hand robot.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49516615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Edge effect on helium outgassing from ULE glass ULE玻璃中氦气放气的边缘效应

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.22.00022

Isuf Tredhaku, S. Avdiaj

{"title":"Edge effect on helium outgassing from ULE glass","authors":"Isuf Tredhaku, S. Avdiaj","doi":"10.1680/jemmr.22.00022","DOIUrl":"https://doi.org/10.1680/jemmr.22.00022","url":null,"abstract":"Determination of the diffusion constant for specific cases can be achieved in different ways. One of them is by using the outgassing of some gas in high vacuum from a solid body. In this paper, the diffusion constant of helium from ULE (ultra-low expansion) glass is determined by using experimental data for outgassing rate of helium from three ULE glass plates with different dimensions. ULE glasses are one of the candidates which may be used in the project for quantum pascal. Usually, the diffusion constant is found by mathematical models which neglect the thickness of the plate. In this paper, a mathematical model for the outgassing of the helium by ULE glass is constructed, taking into account also the thickness of the plates. Optimum values for diffusion coefficient D are determined, such that the mathematical model for outgassing will fit in the best way possible the experimental data. Optimum values for D are calculated based on the fitting by the method of least squares. Values obtained in this manner are compared with the values taken by the previous models which considers plates as infinitely thin surfaces. Thus, the difference between these values, namely the edge effect on the outgassing of helium by ULE glass, is determined.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44513088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Creep behaviour of shock wave surface treated aluminium – MWCNT nanocomposites 激波表面处理铝- MWCNT纳米复合材料的蠕变行为

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.21.00126

P. Kumar, P. M. Mashinini, M. A. Khan

{"title":"Creep behaviour of shock wave surface treated aluminium – MWCNT nanocomposites","authors":"P. Kumar, P. M. Mashinini, M. A. Khan","doi":"10.1680/jemmr.21.00126","DOIUrl":"https://doi.org/10.1680/jemmr.21.00126","url":null,"abstract":"This work focuses on the creep characteristics of shock wave surface treated aluminium nanocomposites for aerospace and defence applications. Aluminium nanocomposites were undergone a surface treatment in shock tube with free piston (STFP) setup condition. The indentation creep study of shock wave surface treated Al – 4.9 Mg alloy (AA5083) reinforced with multi walled carbon nanotubes (MWCNT) nanoparticle with varying weight fraction of MWCNT nanoparticles was tested under two stresses such as 113 MPa and 170 MPa at different temperatures ranges from 473 K to 573 K. The base and nanocomposite materials were developed using a semi-solid state casting method. The instantaneous shock material reaction is characterised by carbide formation of the developed 1.5 wt% and 1.75 wt% nanocomposites. From the obtained results of creep study, shown that the nanocomposites with 1.5 wt% and 1.75 wt% of MWCNT have better creep resistance and stress exponent value at high working temperature compared to base alloy material. The enhanced creep resistance is due to the increased addition of MWCNT nanoparticle into the Al – 4.9 Mg matrix material and nanostructured carbide formation. The attained stress exponent values propose the major creep mechanism in the base alloy and nanocomposite materials was grain boundary sliding.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45951387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sensitivity enhancement of SPR biosensor employing heterostructure blue phosphorus/MoS2 and silicon layer 异质结构蓝磷/二硫化钼和硅层增强SPR生物传感器灵敏度

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.22.00009

Sachin Singh, A. K. Sharma, P. Lohia, D. K. Dwivedi, Sadanand, H. Fouad, M. S. Akhtar

{"title":"Sensitivity enhancement of SPR biosensor employing heterostructure blue phosphorus/MoS2 and silicon layer","authors":"Sachin Singh, A. K. Sharma, P. Lohia, D. K. Dwivedi, Sadanand, H. Fouad, M. S. Akhtar","doi":"10.1680/jemmr.22.00009","DOIUrl":"https://doi.org/10.1680/jemmr.22.00009","url":null,"abstract":"Present study proposed three new Kretschmann configuration based heterostructure surface plasmon resonance sensor for biomolecule detection. The thickness of silver, silicon and heterostructures BlueP/MoS2 layers are optimized under the consideration of less reflectivity, full width at half maxima and enhanced sensitivity. After thickness optimization, the performance parameters of the proposed SPR sensor have also been calculated in terms of sensitivity, quality factor, and detection accuracy. The performance effected by increasing the number of heterostructure BlueP/MoS2 layer is also analyzed. It is also observed that Si layer plays an important role to enhance all performance parameters when it is deposited between silver and heterostructure BlueP/MoS2 layer. The optimized sensitivity at wavelength 633 nm of the heterostructure BlueP/MoS2 monolayer and silicon layer is 282°RIU−1. The highest optimized sensitivity 328°RIU>−1 is achieved with two layers of heterostructure BlueP/MoS2 having thickness of silicon layer 5 nm. It is found that sensitivity is increased by 16% when number of heterostructure layers has changed. Another important parameter like detection accuracy, quality factor, Full width at half maximum have been also calculated for proposed SPR sensor. The TM (transverse magnetic) field plot and PD (penetration depth) 138.25 nm of the proposed SPR sensor have been also calculated.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48479433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Li+ transportation mechanisms in the halide solid state electrolytes Li3YCl6 and Li3InCl6 卤化物固态电解质Li3YCl6和Li3InCl6中Li+的传输机制

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.21.00062

Xiaoping Jia, Meng Zhou, Rui Zhang, Guangyou Li

引用次数: 0

Screen printed contacts for crystalline silicon solar cells -an overview 晶硅太阳能电池的丝网印刷触点-概述

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2022-06-01 DOI: 10.1680/jemmr.22.00021

Vishal Mehta, B. Sopori, N. Ravindra

引用次数: 0