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Dielectric Relaxation Studies Between Brompheniramine with 1-Butanol, 1-Pentanol and 1-Hexanol at 303K 溴苯那敏与1-丁醇、1-戊醇和1-己醇在303K下的介电弛豫研究
Pub Date : 2020-12-30 DOI: 10.13005/msri/170305
S. Elangovan, Tilahun Diriba Garbi, Senbeto Kena Etana
The dielectric relaxation studies are vital in analyzing the strength of the inter molecular interaction between the binary liquid systems [1-4]. Jyostna et al. [5] reported thermodynamic parameters of isoamyl alcohols and mono clinic aromatic liquid mixtures. Shakila et al. [6] studied the dielectric properties of aromatic alcohols and aliphatic amines at different temperatures. In general, dielectric relaxation time varies with the inter molecular forces acting between the molecules in the selected liquid mixtures. Brompheniramine is one of the critical compounds of an amine group with spectacular applications, including pharmaceutical industries [7]. Higher carbon chain length alcohols are having self associated and proton donating ability in the liquid mixtures. The variations in the dielectric constant (є’), dielectric loss (є’’), static dielectric constant (є0) and the dielectric constant at an optical frequency (є∞) with a range of brompheniramine concentrations with 1-butanol,1-pentanol and 1-hexanol systems are useful in the applied research and chemical industries. Moreover, the variations in the dielectric constant and dielectric relaxation time should be useful in the analysis of intermolecular interaction between the functional group of the selected liquid mixtures. This research work attempts to analyse the intermolecular interaction between the brompheniramine and 1-butanol,1-pentanol and 1-hexanol at 303K using time domain reflectometry techniques.
介质弛豫研究对于分析二元液体体系分子间相互作用的强度至关重要[1-4]。Jyostna等人[b]报道了异戊醇和单芳香液体混合物的热力学参数。Shakila等人研究了芳香醇和脂肪胺在不同温度下的介电性能。一般来说,介质弛豫时间随所选液体混合物中分子间作用力的大小而变化。溴苯那明是一种重要的胺类化合物,具有广泛的应用,包括制药工业。高碳链长的醇在液体混合物中具有自结合和给质子的能力。溴苯那敏与1-丁醇、1-戊醇和1-己醇体系在一定浓度范围内的介电常数(_′)、介电损耗(_′′)、静态介电常数(є0)和光学频率下的介电常数(_∞)的变化在应用研究和化学工业中是有用的。此外,介电常数和介电弛豫时间的变化对分析所选液体混合物的官能团之间的分子间相互作用也很有用。本研究试图利用时域反射技术分析溴苯那敏与1-丁醇、1-戊醇和1-己醇在303K下的分子间相互作用。
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引用次数: 0
Complex Impedance Spectroscopic Studies of PMMA(80,70,60,50) : PC(10,20,30,40): PVP(10): LiClO4(5) Polymer Solid Electrolyte Systems PMMA(80,70,60,50)、PC(10,20,30,40)、PVP(10)、LiClO4(5)聚合物固体电解质体系的复阻抗谱研究
Pub Date : 2020-12-26 DOI: 10.13005/msri/170310
R. Swarnalatha, A. Chary, Venkata Ramana Jeedi, Y. Mallaiah, S. Reddy
Polymer solid electrolytes PMMA(80,70,60,50): PC(10,20,30,40):PVP(10):LiClO4(5) were synthesized according to stoichiometric ratios using solution cast method. FTIR study confirms the good complexation among the constituent materials in the polymers matrix. Complex impedance and electric modulus studies are carried out and explained. From cole-cole plots, maximum decrement of resistance is observed at a threshold ratio 70Wt% PMMA: 20Wt% PC: 10Wt% PVP: 5Wt% LiClO4 and this could be due to the high mobility of the Li+ ion in the polymer network due to the plasticizer. The plasticizer plays an important role in decreasing the viscosity of the system, which in turn favors the mobility of segmental motion of polymer network and fast ion motion in the polymer. Real and Imaginary electric modulus spectra show the presence of relaxation peaks and confirm that the polymer solid electrolyte is an ionic conductor.
采用溶液铸法制备了PMMA(80,70,60,50): PC(10,20,30,40):PVP(10):LiClO4(5)等聚合物固体电解质。FTIR研究证实了聚合物基体中各组分之间具有良好的络合性。复杂阻抗和电模量的研究进行和解释。从cole-cole图中,在阈值比为70Wt% PMMA: 20Wt% PC: 10Wt% PVP: 5Wt% LiClO4时观察到最大的电阻衰减,这可能是由于增塑剂使聚合物网络中的Li+离子具有高迁移率。增塑剂在降低体系粘度方面起着重要的作用,从而有利于聚合物网络的节段运动和聚合物中离子的快速运动。实、虚电模量谱显示了弛豫峰的存在,证实了聚合物固体电解质是离子导体。
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引用次数: 0
Adsorption of Acid Dye by Activated Carbon from Agricultural Solid Waste Leucona Leucocephala Seed Shell Waste: Kinetics, Equilibrium and Isotherm Study 活性炭吸附农业固体白带种壳废渣中酸性染料的动力学、平衡及等温研究
Pub Date : 2020-12-25 DOI: 10.13005/msri/170307
Babu Rajendran A, K. S, P. R.
Activated carbons from Leucaena leucocephala Seed Shell left over were generated accompanied by 10% phosphoric acid solution in the N2 atmosphere by chemical activation and their characteristics were investigated. SEM, FTIR and XRD analysis were used to analyse the characteristics of the triggered preparations. Isothermal models, namely the Freundlich and Langmuir representations, were the equilibrium studies carried out.. The equilibrium adsorption result was better suited to the isotherm model of Langmuir and its maximum monolayer adsorption potential for acid blue was 70.67 mg/g. Adsorption kinetics studies have shown that the best fit is provided by the pseudo second-order dynamic model. An intraparticle dispersion model demonstrated that the dissemination of the intraparticle was not a step of rate control. Studies of thermodynamics have shown that the sorption mechanism is spontaneous and exothermic in nature. The findings suggest that the seed shells of Leucaena leucocephala may be used as a possible adsorbent for Acid blue1 adsorption.
采用10%磷酸溶液在N2气氛下化学活化法制备了银合子壳活性炭,并对其特性进行了研究。采用扫描电镜(SEM)、红外光谱(FTIR)和x射线衍射(XRD)分析了所制备的触发剂的特性。等温模型,即Freundlich和Langmuir表示,是进行的平衡研究。平衡吸附结果更符合Langmuir等温吸附模型,其对酸性蓝的最大单层吸附势为70.67 mg/g。吸附动力学研究表明,拟二阶动力学模型拟合效果最好。粒子内扩散模型表明,粒子内扩散不是速率控制的一个步骤。热力学研究表明,吸附机理是自发的、放热的。研究结果表明,银合子壳可作为一种吸附酸性蓝的吸附剂。
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引用次数: 1
The binary oxide NiO-CuO nanocomposite based thick film sensor for the acute detection of Hydrogen Sulphide gas vapours 基于NiO-CuO纳米复合材料的硫化氢气体蒸汽急性检测厚膜传感器
Pub Date : 2020-12-10 DOI: 10.13005/msri/170308
U. Tupe, M. Zambare, A. V. Patil, P. B. Koli
The present research deals with the synthesis of copper oxide and nickel oxide nanoparticles. The nano powder of both NiO-CuO was utilized to fabricate the thick films. Thick films fabricated by screen printing method on glass substrate. The ex-situ doping method was followed for mixing the concentration of nickel oxide in copper oxide lattice. Calculated stoichiometric amount of NiO was loaded during thick film synthesis of CuO. The structure morphology of prepared CuO-NiO nanocomposite thick films was confirmed from x-ray diffraction technique, which approves cubic and crystalline CuO-NiO binary nanocomposite. The surface characteristics of the prepared films investigated by scanning electron microscopy that shows homogeneous, porous CuO-NiO nanoparticles with varying dimensions. The prepared thick films of CuO-NiO nanoparticles were analysed for electrical parameter, that assured the prepared material has a semiconducting nature. Further, these thick films promoted for gas sensing interpretation of H2S gas at various temperature and varied gas concentration. Here exclusive reports for hydrogen sulphide gas are reported. The binary CuO-NiO was thoroughly investigated for hydrogen sulphide gas concentration from 50 ppm to 500 ppm at the different temperature. The binary oxide sensor is found to be very sensitive at room temperature and maximum sensitivity response was 75.01 % for H2S gas. Furthermore the response and recovery times are also reported for binary sensor in the present research. The sensor reproducibility cycle was performed for binary oxide sensor at hydrogen sulphide gas (H2S). Material Science Research India www.materialsciencejournal.org ISSN: 0973-3469, Vol.17, No.(3) 2020, Pg. 260-269 CONTACT Prashant Bhimrao Koli prashantkoli005@gmail.com Research Centre in Chemistry, Arts, Commerce and Science College, Nandgaon, Taluka-Nandgaon, DistrictNashik, (MH), India, Affiliated to Savitribai Phule Pune University, Pune, India. © 2020 The Author(s). Published by Oriental Scientific Publishing Company This is an Open Access article licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License Doi: http://dx.doi.org10.13005/msri/170308 Article History Received: 5 October 2020 Accepted: 30 November 2020
本文研究了氧化铜和氧化镍纳米颗粒的合成。利用这两种纳米粉末制备了厚膜。用丝网印刷法在玻璃基板上制备厚膜。采用非原位掺杂的方法在氧化铜晶格中混合氧化镍的浓度。在CuO厚膜合成过程中,计算了NiO的化学计量量。用x射线衍射技术对制备的CuO-NiO纳米复合材料厚膜的结构形貌进行了验证,证实了CuO-NiO二元纳米复合材料是立方型和结晶型的。扫描电镜研究了制备薄膜的表面特征,发现纳米CuO-NiO具有不同尺寸的均匀多孔性。对制备的CuO-NiO纳米颗粒厚膜进行了电学参数分析,确定了制备的材料具有半导体性质。此外,这些厚膜促进了在不同温度和不同气体浓度下H2S气体的气敏解释。这里报告了硫化氢气体的独家报告。在不同温度下对硫化氢气体浓度从50 ppm到500 ppm的二元CuO-NiO进行了深入的研究。二元氧化物传感器在室温下非常灵敏,对H2S气体的最大灵敏度响应为75.01%。此外,本文还报道了二元传感器的响应时间和恢复时间。对硫化氢气体(H2S)下的二元氧化物传感器进行了传感器重复性循环。印度材料科学研究www.materialsciencejournal.org ISSN: 0973-3469, Vol.17, No. 3, 2020, Pg. 260-269 CONTACT Prashant Bhimrao Koli prashantkoli005@gmail.com化学,艺术,商业和科学学院研究中心,Nandgaon, Taluka-Nandgaon, DistrictNashik, (MH),印度,附属于Savitribai Phule浦那大学,浦那,印度。©2020作者。这是一篇基于知识共享署名-非商业性-相同方式共享4.0国际许可协议的开放获取文章Doi: http://dx.doi.org10.13005/msri/170308文章历史收稿日期:2020年10月5日接受日期:2020年11月30日
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引用次数: 12
Synthesis, Spectroscopic Characterization, Quantum Chemical Study and Antimicrobial Study of (2e) -3-(2, 6-Dichlorophenyl) -1-(4-Fluoro) -Prop-2-En-1-One (2e) -3-(2,6 -二氯苯基)-1-(4-氟)- prop -2- en -1- one的合成、光谱表征、量子化学研究和抗菌研究
Pub Date : 2020-11-23 DOI: 10.13005/msri/170311
Nutan V.Sadgir, Sunil L.Dhonnar, B. Jagdale, B. Waghmare, Chetan Sadgir
The ethanol containing vertical storage column is typically a leak proof tank which is used to store the liquid and fine powder. To exploit the storing capability, these columns are generally precise high normally above 27meters with a circular cross section. The task arranged is that the agitator and the vertical pole are necessary to be on the equal podium. Due to this the pole is predisposed to vibrations from the Campaigner. This was needed to optimize the natural frequency of the column. Stiffeners /Support are fond of to the column plate to reinforce the column counter to pressure force, to minimize the vibrations of the plate and to become rigid plate against buckling. Stiffeners must be set apart at some suitable positioning so that plate stress is low than permissible stress. If column panel tallness or breadth is less than acceptable plate span then according to assumption column doesn’t requires stiffeners/support. Though if column lifted or handles in one piece then, some stiffening may be required to keep column shape. Rise the stiffness by growing stiffeners/supports leads to load increase so no actual variance in rate of recurrence. By reducing mass of column and that can be possible only by selecting proper material. The objective of entire effort is to design of the vertical column in such a way that the natural frequency of the column can be optimized. As number of supports (horizontal) are increasing the natural frequency of column is also increasing, but at same time weight is also increased. So in order to optimize design the weight of column provided by support must be reduced. After optimize the structure of support and carrying out pre stressed modal analysis the targeted natural frequencies (>16 Hz) is obtained in the structure.
含乙醇垂直储存塔是典型的防漏罐,用于储存液体和细粉。为了开发存储能力,这些柱通常高度精确,通常在27米以上,具有圆形截面。所安排的任务是搅拌器和立杆必须在同一台台上。由于这一点,磁极倾向于来自竞选者的振动。这是优化柱的固有频率所必需的。加强筋/支撑物是用来加固柱板以对抗压力力,使板的振动最小化,使板成为刚性板,防止屈曲。加强筋必须在适当的位置分开,使板应力低于允许应力。如果柱面板的高度或宽度小于可接受的板跨,那么根据假设柱不需要加强/支持。虽然如果柱子抬起或处理在一个整体,一些加强可能需要保持柱的形状。通过增加加强筋/支撑物来提高刚度会导致载荷增加,因此在复发率上没有实际的变化。通过减少柱的质量,这只能通过选择合适的材料来实现。整个努力的目标是设计垂直柱的方式,使柱的固有频率可以优化。随着支撑(水平)数量的增加,柱的固有频率也在增加,但同时自重也在增加。因此,为了优化设计,必须减小支承柱的自重。通过对支架结构进行优化并进行预应力模态分析,得到了支架结构的目标固有频率(>16 Hz)。
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引用次数: 4
Carbon Nanotube Reinforced Metal Matrix Composites by Powder Metallurgy: A Review 粉末冶金碳纳米管增强金属基复合材料研究进展
Pub Date : 2020-11-21 DOI: 10.13005/msri/170302
Azeem Pasha, Rajaprakash B.M, Nayeem Ahmed M, Tariq hafeezi, Manjunath Ac
This Review paper mainly focuses on the processing technique of carbon nanotube reinforced materials with light material matrix composites of the powder metallurgy route. Different mixing/alloying conditions are used for carbon nanotube dispersion (CNT) in the Aluminium matrix using a ball milling process with ball milling time, milling speed, Ball to powder (BPR) ratio, and Process control agent (PCA). Processing parameters are discussed, such as sintering temperature, sintering time, pressure, and heat treatment condition. Mechanical and microstructural properties are discussed.
本文主要综述了轻材料基复合材料的粉末冶金路线碳纳米管增强材料的加工技术。采用球磨时间、球磨速度、球粉比(BPR)和过程控制剂(PCA)对铝基体中的碳纳米管分散体(CNT)进行了不同的混合/合金化处理。讨论了烧结温度、烧结时间、压力、热处理条件等工艺参数。讨论了材料的力学性能和显微组织性能。
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引用次数: 3
Finite Element Analysis (FEA) Based Frequency Optimization of Vertical Storage Column 基于有限元分析(FEA)的立式储气柱频率优化
Pub Date : 2020-10-15 DOI: 10.13005/msri/170306
Sumit Desai, Ganesh Bhalerao, A. Desai
The ethanol containing vertical storage column is typically a leak proof tank which is used to store the liquid and fine powder. To exploit the storing capability, these columns are generally precise high normally above 27meters with a circular cross section. The task arranged is that the agitator and the vertical pole are necessary to be on the equal podium. Due to this the pole is predisposed to vibrations from the Campaigner. This was needed to optimize the natural frequency of the column. Stiffeners /Support are fond of to the column plate to reinforce the column counter to pressure force, to minimize the vibrations of the plate and to become rigid plate against buckling. Stiffeners must be set apart at some suitable positioning so that plate stress is low than permissible stress. If column panel tallness or breadth is less than acceptable plate span then according to assumption column doesn’t requires stiffeners/support. Though if column lifted or handles in one piece then, some stiffening may be required to keep column shape. Rise the stiffness by growing stiffeners/supports leads to load increase so no actual variance in rate of recurrence. By reducing mass of column and that can be possible only by selecting proper material. The objective of entire effort is to design of the vertical column in such a way that the natural frequency of the column can be optimized. As number of supports (horizontal) are increasing the natural frequency of column is also increasing, but at same time weight is also increased. So in order to optimize design the weight of column provided by support must be reduced. After optimize the structure of support and carrying out pre stressed modal analysis the targeted natural frequencies (>16 Hz) is obtained in the structure.
含乙醇垂直储存塔是典型的防漏罐,用于储存液体和细粉。为了开发存储能力,这些柱通常高度精确,通常在27米以上,具有圆形截面。所安排的任务是搅拌器和立杆必须在同一台台上。由于这一点,磁极倾向于来自竞选者的振动。这是优化柱的固有频率所必需的。加强筋/支撑物是用来加固柱板以对抗压力力,使板的振动最小化,使板成为刚性板,防止屈曲。加强筋必须在适当的位置分开,使板应力低于允许应力。如果柱面板的高度或宽度小于可接受的板跨,那么根据假设柱不需要加强/支持。虽然如果柱子抬起或处理在一个整体,一些加强可能需要保持柱的形状。通过增加加强筋/支撑物来提高刚度会导致载荷增加,因此在复发率上没有实际的变化。通过减少柱的质量,这只能通过选择合适的材料来实现。整个努力的目标是设计垂直柱的方式,使柱的固有频率可以优化。随着支撑(水平)数量的增加,柱的固有频率也在增加,但同时自重也在增加。因此,为了优化设计,必须减小支承柱的自重。通过对支架结构进行优化并进行预应力模态分析,得到了支架结构的目标固有频率(>16 Hz)。
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引用次数: 0
Strategic role of research in structural engineering for high performance and reliable devices 研究在结构工程中对高性能和可靠装置的战略作用
Pub Date : 2020-08-30 DOI: 10.13005/MSRI/170201
S. Baragetti
This paper provides some considerations about the strategic role of engineering research to predict structural strength and avoid damage. Even in the case of defects or after a break, scientific research allows to understand the causes through Failure Analyses. This paper, after an in-depth examination and discussion of the causes of structural damage, reports an example of Failure Analysis of a component of a helicopter gearbox.
本文就工程研究在预测结构强度和避免损伤中的战略作用提出了一些思考。即使在出现缺陷或中断的情况下,科学研究也可以通过故障分析来了解原因。本文通过对结构损伤原因的深入研究和讨论,报道了直升机齿轮箱某部件的失效分析实例。
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引用次数: 0
Phase Development of Barium Bismuth Titanate by Modified Solid State Route 改性固相法制备钛酸铋钡
Pub Date : 2020-08-30 DOI: 10.13005/msri/170205
S. Mukherjee, Mohammed Shahnawaz, Sathi Banerjee
Barium bismuth titanate materials are noted for ferroelectric behavior, competitor to lead based relaxor dielectrics and even for coating having wear resistance, toughness for improving surface engineering applications. In the present context, a modified solid state process aided by agate-mortar activation for milling is carried in compare to mechanochemical milling, meltquench method to generate the complex ceramic structure. Molar ratio of BaO:Bi2O3:TiO2 1:2:4 ratio have been taken with fixed soaking temperature to develop the material. Activation milling period is varied for 20 hours, 25 hours and 30 hours while soaking period descends in the order 10 hours, 8 hours and 6 hours keeping fixed temperature of about 700°C. XRD confirms the presence of peaks for all cases. Crystallite size is estimated by Scherrers formula with proper planes of index corresponding to JCPDS data. FTIR confirmed the phases developed by XRD while indicating the proper M-O bond formation from analysis in the required spectral range. EDX spectra analysis given the presence of required elements present in the sample. Material Science Research India www.materialsciencejournal.org ISSN: 0973-3469, Vol.17, No.(2) 2020, Pg. 129-135 CONTACT Soumya Mukherjee smmukherjee3@gmail.com Department of Metallurgical Engineering, Kazi Nazrul University,
钛酸钡铋材料以其铁电性能而闻名,是铅基弛豫电介质的竞争对手,甚至是具有耐磨性和韧性的涂层,可用于改善表面工程应用。本文采用玛瑙-灰浆活化法制备复合陶瓷,与机械化学法制备复合陶瓷相比,采用熔融淬火法制备复合陶瓷结构。在固定的浸泡温度下,采用BaO:Bi2O3:TiO2的摩尔比1:2:4来显影材料。在700℃左右的固定温度下,活化磨矿时间依次为20小时、25小时和30小时,浸泡时间依次为10小时、8小时和6小时。XRD证实了所有样品都存在峰。用Scherrers公式估算晶体尺寸,并与JCPDS数据对应适当的指数面。FTIR证实了XRD形成的相,同时在要求的光谱范围内分析表明正确的M-O键形成。给定样品中存在所需元素的EDX光谱分析。印度材料科学研究www.materialsciencejournal.org ISSN: 0973-3469, Vol.17, No. 2, 2020, Pg. 129-135 CONTACT Soumya Mukherjee smmukherjee3@gmail.com Kazi Nazrul大学冶金工程系
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引用次数: 0
Harnessing the therapeutic myco-potential for concrete-crack healing: Prospects and snags 利用治疗性菌群潜力进行混凝土裂缝愈合:前景与障碍
Pub Date : 2020-08-30 DOI: 10.13005/msri/170204
Rocktotpal Konwarh, S. Palanisamy, Pavan Kumar Jogi
There has been a continual upsurge on research pertaining to bio-based/ microbial healing of cracks in concrete (a pre-requisite component when it comes to construction design). Albeit, the application of bacteria in this realm has been documented widely over the years, howbeit, delving into fungus based self-healing under the deleterious ambience of concrete with oxygen and nutrient limitation, moisture deficit and high alkalinity has captured recent research impetus. In this context, we have tried to mine the current contextual information to gauge whether research on fungal-based self-healing concrete could be worthwhile. Recent systematic screening encompassing the application of genetically engineered strains, attests the profound untapped potential of specific fungal species in assisting sustainable self-healing to ensure resilient infrastructure. Known for their adaptability under a plethora of environmental stress-conditions and architecturally endowed with large surface-active biomass, fungi can display both biomineralization and organomineralization, leading to rapid and profuse precipitation of CaCO3 (a befitting concrete-filler) for prospective sealing of cracks, even of large width, plausibly without any negative trade-off with respect to concrete’s strength. This article is thus compiled to mirror the various prospects, practical hitches and future direction of research in using fungi for concrete crack healing.
关于混凝土裂缝的生物基/微生物愈合的研究一直在不断高涨(这是建筑设计的先决条件)。尽管多年来,细菌在这一领域的应用已被广泛记录,然而,在氧气和营养限制、水分不足和高碱度的混凝土有害环境下,深入研究基于真菌的自愈已经获得了最近的研究动力。在这种情况下,我们试图挖掘当前的背景信息,以衡量基于真菌的自愈混凝土的研究是否值得。最近的系统筛选包括基因工程菌株的应用,证明了特定真菌物种在协助可持续自我修复以确保弹性基础设施方面的巨大未开发潜力。真菌以其在过多的环境应力条件下的适应性而闻名,并且在建筑上具有大量的表面活性生物量,真菌可以显示生物矿化和有机矿化,导致CaCO3(一种合适的混凝土填料)的快速和大量沉淀,用于潜在的裂缝密封,即使是大宽度,似乎对混凝土的强度没有任何负面的权衡。因此,本文的编写反映了利用真菌修复混凝土裂缝的各种前景、实际问题和未来的研究方向。
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引用次数: 3
期刊
Material Science Research India
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