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Journal of Mineral and Material Science (JMMS)最新文献

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Story of Civilizations and Materials 文明与物质的故事
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-12-28 DOI: 10.54026/jmms/1050
J. Desai
{"title":"Story of Civilizations and Materials","authors":"J. Desai","doi":"10.54026/jmms/1050","DOIUrl":"https://doi.org/10.54026/jmms/1050","url":null,"abstract":"","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133087689","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
Significant Contribution of Deeper Traps for Long Afterglow Process in Synthesized Thermoluminescence Material 深阱对合成热致发光材料长余辉过程的重要贡献
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-12-20 DOI: 10.54026/jmms/1049
Shashank Sharma
{"title":"Significant Contribution of Deeper Traps for Long Afterglow Process in Synthesized Thermoluminescence Material","authors":"Shashank Sharma","doi":"10.54026/jmms/1049","DOIUrl":"https://doi.org/10.54026/jmms/1049","url":null,"abstract":"A promising candidate of long persistent Ca2 MgSi2 O7 :Dy3+ phosphor sample was well sintered via traditional high temperature solid-state synthesis technique and characterized in terms of crystal structure, particle size, phase composition and TL trapping parameters have briefly discussed using X-Ray Diffraction (XRD), Field Emission Scanning Electron microscopy (FESEM), Energy Dispersive X-ray (EDX) Spectroscopy and TL-Dosimetry Reader techniques. The XRD results revealed that it has formed in a single phase and tetragonal crystallography (Akermanite crystal structure) with a space group P4̅21m. All trapping parameters such as activation energy (E) (i.e. trap depth), order of kinetics (b) and frequency factor (s), and all these trapping parameters were calculated using Chen’s glow curve method. In this present paper, structural & thermal properties of synthesized phosphor are discussed in detail. We have clearly observed that the trapped electrons in the crystal lattice site and the self-trapped hole that both are responsible for crystal growth process. Deeper traps are highly helpful for increasing the long persistent duration and afterglow process.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127877850","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
Mineral Kaolin - A Highly Versatile Filler for Rubber 矿物高岭土-一种高度通用的橡胶填料
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-11-23 DOI: 10.54026/jmms/1048
A. Ansarifar
{"title":"Mineral Kaolin - A Highly Versatile Filler for Rubber","authors":"A. Ansarifar","doi":"10.54026/jmms/1048","DOIUrl":"https://doi.org/10.54026/jmms/1048","url":null,"abstract":"","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124615428","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
Solution Enthalpy of Calcium Oxyapatite Ca10(PO4 ) 6 O in Pure Water 氧化磷灰石钙Ca10(PO4) 6o在纯水中的溶解焓
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-10-14 DOI: 10.54026/jmms/1047
K. Ardhaoui
{"title":"Solution Enthalpy of Calcium Oxyapatite Ca10(PO4 ) 6 O in Pure Water","authors":"K. Ardhaoui","doi":"10.54026/jmms/1047","DOIUrl":"https://doi.org/10.54026/jmms/1047","url":null,"abstract":"","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413753","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
Radiation Induced Changes in Makrofol PCVM Polycarbonate 辐射诱导聚碳酸酯聚碳酸酯PCVM的变化
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-10-10 DOI: 10.54026/jmms/1046
Radiyah A Bahareth
{"title":"Radiation Induced Changes in Makrofol PCVM Polycarbonate","authors":"Radiyah A Bahareth","doi":"10.54026/jmms/1046","DOIUrl":"https://doi.org/10.54026/jmms/1046","url":null,"abstract":"Makrofol PCVM is a sort of Makrofol polycarbonate solid state nuclear track detector. It is worth mentioning that this paper is almost the first one that deals with the modification of the optical properties of this type of Makrofol under the effect of laser radiation. Samples from Makrofol PCVM were exposed to infrared pulsed laser with different fluences ranging from 15 to 125 J/cm2 . UV spectroscopic technique was used to obtain knowledge about the optical parameters that describe the samples under study. The changes of Urbach energy (Eu ), optical band gap (Eg ) and refractive index (n) with the laser fluence were investigated. Both Eu and n increased with increasing the fluence up to 125 J/cm2 , associated with a decrease of Eg values. These trends were assigned to the predominance of chain crosslinking that damaged the crystalline portion in the Makrofol polymer. Additionally, we used the CIE technique to calculate the color differences between the noncoloured pristine and the irradiated samples. The crosslinking created color centers that produced color difference between the exposed films and the uncolored pristine Makrofol film. The color difference was significant as the values of ΔE were greater than 5. This optimized the Makrofol polymer to be used in dosimetric applications.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114695561","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
Accuracy of a DtN Finite Element Approach for the Elastic Half-Space 弹性半空间DtN有限元方法的精度
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-09-27 DOI: 10.54026/jmms/1045
Eduardo Ignacio Godoy Riveros
{"title":"Accuracy of a DtN Finite Element Approach for the Elastic Half-Space","authors":"Eduardo Ignacio Godoy Riveros","doi":"10.54026/jmms/1045","DOIUrl":"https://doi.org/10.54026/jmms/1045","url":null,"abstract":"In this work, the accuracy of a DtN finite element approach is numerically assessed. This procedure allows an efficient and accurate numerical solution of boundary-value problems of axisymmetric elasticity in semi-infinite domains. For this kind of problems, no explicit closed-form expression for the associated DtN map exists, so a suitable semi-analytical approximation of it, in series form, is used to impose exact boundary conditions on a semi-spherical artificial boundary. The procedure is tested by solving the classical Boussinesq problem, whose exact solution is known analytically. The computed numerical solution is compared to the analytical solution, achieving an excellent agreement between both solutions, both for displacements and stresses. The convergence of the analytical solution to the numerical solution is numerically demonstrated, in terms of artificial boundary location, series truncation order and finite element mesh size.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128479525","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
Young Modulus, Maximum Real Stress and Elastic Deformation Limit of W and WSi from Statistical Moment Method 用统计矩法计算W和WSi的杨氏模量、最大实际应力和弹性变形极限
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-08-22 DOI: 10.54026/jmms/1044
Nguyen Quang Hoc
{"title":"Young Modulus, Maximum Real Stress and Elastic Deformation Limit of W and WSi from Statistical Moment Method","authors":"Nguyen Quang Hoc","doi":"10.54026/jmms/1044","DOIUrl":"https://doi.org/10.54026/jmms/1044","url":null,"abstract":"We present the theory of nonlinear and elastic defomation for BCC metal and binary interstitial alloy builded on the basis of a statistical moment method and our numerical calculations for W and WSi depending on temperature, pressure and interstitial atom concentrations. Our numerical calculations for Young modulus of W are compared with experiments and our other numerical calculations are new and predictic.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130854757","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 Kinetic Data of the WC’s Synthesis Via Gas-Solid Reaction 气固反应合成碳化钨的动力学数据评价
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-08-15 DOI: 10.54026/jmms/1042
Camila Pacelly Brandão de Araújo
{"title":"Evaluation of Kinetic Data of the WC’s Synthesis Via Gas-Solid Reaction","authors":"Camila Pacelly Brandão de Araújo","doi":"10.54026/jmms/1042","DOIUrl":"https://doi.org/10.54026/jmms/1042","url":null,"abstract":"Tungsten carbide (WC) stands out in the mechanical industry, chemical and aerospace by presenting a unique combination of properties, such as high hardness, high melting point, high wear resistance, great chemical, and thermal stability. Refractory carbides’ synthesis via gas-solid reaction is an interesting processing route as it can produce those materials in nanoscale and thus, enhance several of its properties. In this paper, the WC production process was studied upon the evaluation of kinetic data available in the literature. The synthesis data were obtained through the “Digitize” tool of the Origin® software and two kinetic models were evaluated regarding its agreement with those data: 1st order powerlaw and Avrami model. Kinetic constants using a 1st order reaction were estimated and a k=0.00181min-1 with R² =0.9646 for the reaction at 850 ° C and 120min of soaking time.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114558287","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
Importance of Teaching Technology and Science Together 科技结合教学的重要性
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-08-15 DOI: 10.54026/jmms/1043
Thomas G Stoebe
{"title":"Importance of Teaching Technology and Science Together","authors":"Thomas G Stoebe","doi":"10.54026/jmms/1043","DOIUrl":"https://doi.org/10.54026/jmms/1043","url":null,"abstract":"","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127098036","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
Electrochemical Energy Storage and Conversion Systems – A Short Review 电化学储能与转换系统综述
Journal of Mineral and Material Science (JMMS) Pub Date : 2022-08-01 DOI: 10.54026/jmms/1041
Marco Aurélio Suller Garcia
{"title":"Electrochemical Energy Storage and Conversion Systems – A Short Review","authors":"Marco Aurélio Suller Garcia","doi":"10.54026/jmms/1041","DOIUrl":"https://doi.org/10.54026/jmms/1041","url":null,"abstract":"Electrochemical energy production systems – including fuel cells and electrolyzers – are vital technologies to address energy security and environmental demands. Also, their combination for improved performance is essential for future commercial applications. However, their real utilization (and integration with other alternative energy sources) goes beyond efficiency; large-scale penetration of renewable energy in the existing electrical grid systems is challenging due to destabilization possibility. Thus, electrochemical energy storage systems (e.g., electrochemical supercapacitors) are necessary for managing power generation intermittency and grid reliability. Therefore, this ultra-short review provides a brief overview of some of the most promising electrochemical devices for electrochemical energy production and storage for future systems in an engagement scenario.","PeriodicalId":199420,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125385823","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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