Materials Proceedings最新文献_第4页

Women in the Stone Sector: Challenges and Opportunities from an Educational Point of View 妇女在石材行业:从教育角度的挑战和机遇

Materials Proceedings Pub Date : 2021-12-11 DOI: 10.3390/materproc2021005079

Magda Maniou, M. Perraki, A. Mavrikos, M. Menegaki

引用次数: 0

Managing and Utilizing Big Data in Atmospheric Monitoring Systems for Underground Coal Mines 煤矿井下大气监测系统大数据的管理与利用

Materials Proceedings Pub Date : 2021-12-11 DOI: 10.3390/materproc2021005078

Juan Diaz, Z. Agioutantis, D. Hristopulos, S. Schafrik

{"title":"Managing and Utilizing Big Data in Atmospheric Monitoring Systems for Underground Coal Mines","authors":"Juan Diaz, Z. Agioutantis, D. Hristopulos, S. Schafrik","doi":"10.3390/materproc2021005078","DOIUrl":"https://doi.org/10.3390/materproc2021005078","url":null,"abstract":"Underground coal mining Atmospheric Monitoring Systems (AMS) have been implemented for real-time or near real-time monitoring and evaluation of the mine atmosphere and related parameters such as gas concentration (e.g., CH4, CO, O2), fan performance (e.g., power, speed), barometric pressure, ambient temperature, humidity, etc. Depending on the sampling frequency, AMS can collect and manage a tremendous amount of data, which mine operators typically consult for everyday operations as well as long-term planning and more effective management of ventilation systems. The raw data collected by AMS need considerable pre-processing and filtering before they can be used for analysis. This paper discusses different challenges related to filtering raw AMS data in order to identify and remove values due to sensor breakdowns, sensor calibration periods, transient values due to operational considerations, etc., as well as to homogenize time series for different variables. The statistical challenges involve the removal of faulty values and outliers (due to systematic problems) and transient effects, gap-filling (by means of interpolation methods), and homogenization (setting a common time reference and time step) of the respective time series. The objective is to derive representative and synchronous time series values that can subsequently be used to estimate summary statistics of AMS and to infer correlations or nonlinear dependence between different data streams. Identification and modeling of statistical dependencies can be further exploited to develop predictive equations based on time series models.","PeriodicalId":18729,"journal":{"name":"Materials Proceedings","volume":"195 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75909871","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

Quantitative Analysis of Portland Cement Clinker with Rietveld Refinement: Implications of the Amorphous Matter 硅酸盐水泥熟料Rietveld细化的定量分析:无定形物质的意义

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005075

G. Christidis, M. Dimitriadi, G. Triantafyllou, C. Tsoumeleas

引用次数: 2

Production of Sustainable Hydrogen and Carbon for the Metallurgical Industry 为冶金工业可持续生产氢和碳

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005067

R. Jensen, C. van der Eijk, A. Wærnes

引用次数: 3

Diagenesis of the Sedimentary Fe–Ni Deposits of Euboea: Evidence Based on Phyllosilicate Mineralogy Euboea沉积铁镍矿床的成岩作用:基于层状硅酸盐矿物学的证据

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005073

Spyros Cheliotis-Chatzidimitriou, G. Christidis, I. Marantos

引用次数: 0

Combined Corrosion Inhibitors and Mechanical Properties of Concrete Embedded Steel (AISI 316L) during Accelerated Saline Corrosion Test 混凝土预埋钢(AISI 316L)在加速盐腐蚀试验中的联合缓蚀剂和力学性能

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005072

S. Tsouli, A. Lekatou, S. Kleftakis, Pantelis Gkoutzos, I. Tragazikis, T. Matikas

引用次数: 1

Kaoline Mapping Using ASTER Satellite Imagery: The Case Study of Kefalos Peninsula, Kos Island 利用ASTER卫星影像进行高高线制图:以科斯岛Kefalos半岛为例

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005076

M. Kokkaliari, C. Kanellopoulos, Ioannis Illiopoulos

引用次数: 0

Upscaling of Permanent Magnet Dismantling and Recycling through VALOMAG Project 通过VALOMAG项目提升永磁体拆解和回收的规模

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005074

F. Coelho, S. Abrahami, Yongxiang Yang, B. Sprecher, Zhiji Li, N. Menad, K. Bru, Thibaut Marcon, C. Rado, B. Saje, Marie-Lise Sablayrolles, V. Decottignies

{"title":"Upscaling of Permanent Magnet Dismantling and Recycling through VALOMAG Project","authors":"F. Coelho, S. Abrahami, Yongxiang Yang, B. Sprecher, Zhiji Li, N. Menad, K. Bru, Thibaut Marcon, C. Rado, B. Saje, Marie-Lise Sablayrolles, V. Decottignies","doi":"10.3390/materproc2021005074","DOIUrl":"https://doi.org/10.3390/materproc2021005074","url":null,"abstract":"Neodymium-Iron-Boron (NdFeB) based permanent magnets are indispensable in today’s technology-driven society. Moreover, their use is likely to increase since they are key in clean energy applications such as wind turbines, hybrid/electric vehicles, and electric bikes. They contain critical raw materials as rare earth elements are used. Indeed, permanent magnets are considered strategic materials by the EU, and their recycling represents a potential secondary supply to decrease the import dependence. The VALOMAG project is developing a technical solution to recover rare earth (RE) based permanent magnets by dismantling end-of-life (EoL) products such as computer hard disc drives, electric motors, and generators from electric vehicles and wind turbines. It also assesses two short loop recycling technologies: Hydrogen Decrepitation (HD) or Hydrogenation–Disproportionation–Desorption–Recombination (HDDR) and strip-casting for high and medium quality magnet wastes; and hydrometallurgical processes for EoL low-quality magnets. Moreover, Life Cycle Assessment (LCA) and Process Integration with a Flowsheet simulation tool will integrate the whole recycling value chain (collection, dismantling, physical and chemical treatment options, and re-manufacturing) and assess the environmental impact and processes efficiency. A market study on the types and expected future quantities for the scrap magnets and the characterisation of the EoL magnets from hard disc drives (HDD) will be presented as preliminary results. Pre-treatment and sorting of 2.5 tons of NdFeB magnets scraps were carried out, and the two short loop recycling routes and the hydrometallurgical route are under investigation at the lab and pilot scale. The results will be used to develop a process integration and to assess the three routes through LCA.","PeriodicalId":18729,"journal":{"name":"Materials Proceedings","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85201660","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

Evaluation of Gas Generation Potential Using Thermal Maturity Modelling—The Katakolo Case: A Probable Pathway to Energy Transition 利用热成熟度模型评价天然气生成潜力——Katakolo案例:能源转换的可能途径

Materials Proceedings Pub Date : 2021-12-10 DOI: 10.3390/materproc2021005070

V. Makri, G. Panagopoulos, K. Nikolaou, S. Bellas, N. Pasadakis

引用次数: 1

Magnesite Ore Washing Facilities’ Wastewater Treatment and Recovered Water Reuse 菱镁矿洗矿厂废水处理及回用

Materials Proceedings Pub Date : 2021-12-09 DOI: 10.3390/materproc2021005071

Iason Tsilogeorgis, E. Tzamos, E. Kokkinos, A. Zouboulis

引用次数: 0