Spectroscopy Europe最新文献

{"title":"How hyperspectral imaging and artificial intelligence transform Alzheimer’s diagnosis","authors":"Sophie Lemmens, L. De Groef, W. Charle, M. Jayapala, J. Theunis, L. Moons, P. De Boever, I. Stalmans","doi":"10.1255/sew.2021.a26","DOIUrl":"https://doi.org/10.1255/sew.2021.a26","url":null,"abstract":"Sophie Lemmens,a,b Lies De Groef,c Wouter Charle,d Murali Jayapala,d Jan Theunis,e Lieve Moons,c Patrick De Boeverf and Ingeborg Stalmansa,b KU Leuven, Biomedical Sciences Group, Department of Neurosciences, Research Group Ophthalmology, Herestraat 49, Leuven, 3000, Belgium University Hospitals UZ Leuven, Department of Ophthalmology, Herestraat 49, Leuven, 3000, Belgium Neural Circuit Development and Regeneration Research Group, KU Leuven, Belgium Hyperspectral Imaging Technology Research Group, imec, Belgium Health Unit, VITO, Belgium Centre of Excellence Microbial Systems Technology, University of Antwerp, Belgium, and Centre for Environmental Sciences, Hasselt University, Belgium","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43206155","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}

{"title":"“Sampling vs analytical error: where the money is …”","authors":"P. Minkkinen","doi":"10.1255/SEW.2021.A25","DOIUrl":"https://doi.org/10.1255/SEW.2021.A25","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45199242","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}

{"title":"Are carbon micro-clusters in the Khufu pyramid blocks of organic origin? PIXE and PIGE reveal the construction of Giza’s pyramids","authors":"G. Demortier","doi":"10.1255/SEW.2021.A21","DOIUrl":"https://doi.org/10.1255/SEW.2021.A21","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42281454","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}

{"title":"Structural, dielectric and Raman spectroscopic study of complex electric and magnetic interactions in multiferroic ionic crystals","authors":"H. Gibhardt, Fabian Ziegler, G. Eckold","doi":"10.1255/SEW.2021.A22","DOIUrl":"https://doi.org/10.1255/SEW.2021.A22","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45604500","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}

{"title":"Surface-enhanced Raman spectroscopy for selected energetic material detection","authors":"Mohamed Mokhtar, T. Wafy, M. Abdelhafiz","doi":"10.1255/SEW.2021.A23","DOIUrl":"https://doi.org/10.1255/SEW.2021.A23","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46308539","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}

{"title":"Four generations of quality: “measuring up”","authors":"John P. Hammond","doi":"10.1255/SEW.2021.A24","DOIUrl":"https://doi.org/10.1255/SEW.2021.A24","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43648177","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}

{"title":"Laser-induced breakdown spectroscopy: a unique analytical tool for the geosciences","authors":"G. Senesi, R. Harmon","doi":"10.1255/SEW.2021.A17","DOIUrl":"https://doi.org/10.1255/SEW.2021.A17","url":null,"abstract":"Introduction Knowledge about the chemical composition of minerals, rocks and soils is of fundamental importance in the earth and environmental sciences (i.e. geosciences). Historically, during the late-19 and mid-20 centuries classical wet chemical analytical methods were the means of determining the elemental composition of such geological materials. Since then, intensive research in analytical inorganic chemistry has led to the development of a multiplicity of rapid and accurate instrumental analytical techniques for use in the laboratory that can be applied to elemental analysis across the periodic table. This has been of particular benefit to research in the geosciences, where the need for chemical data has continuously expanded with regard not only to the type of elements and their concentration levels, but also application to a wide variety of geological materials across the solid–liquid–gas spectrum. One of the enduring needs within the geoscience community has been the availability of analytical instrumentation capable of routine use outside the laboratory setting. Laser-induced breakdown spectroscopy (LIBS) is one of the very few current analytical technologies suitable for routine use outside the laboratory and has a persuasive set of advantages that makes it ideally suited for chemical analysis in the field. These include rapid analysis with a compact and lightweight instrument by a single individual of most types of natural materials under ambient environmental conditions in real time, and with little to no sample preparation. Although such a field analytical technique does not provide the level of elemental detection and analytical precision possible with laboratory instruments, it nevertheless provides an efficient and invaluable capability to the field investigator. To date, LIBS has been applied widely across the geosciences in sub-fields as diverse as mineralogy and petrology, volcanology, sedimentology, natural resources exploration and exploitation, pedology, and geoarchaeology. The most common applications of LIBS in the analysis of geological materials include: (i) elemental detection and identification; (ii) quantitative elemental analysis; (iii) microscale geochemical mapping; (iv) discrimination and classification of minerals and rocks of similar character via spectral matching against an assembled spectral library; and (v) determination of sample geographical origin and provenance. Although LIBS is not able to address all questions arising in geochemical research and practice due to some inherent limitations in sensitivity, it can excel for specific geoscience applications.","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":"1 1","pages":"15"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47484847","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}

{"title":"FAIR practice","authors":"A. Davies","doi":"10.1255/sew.2021.a14","DOIUrl":"https://doi.org/10.1255/sew.2021.a14","url":null,"abstract":"","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":"1 1","pages":"18"},"PeriodicalIF":0.0,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43967332","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}

{"title":"Letter to the Editor: origins of volume fraction for better calibrations","authors":"A. Davies, H. Mark","doi":"10.1255/SEW.2021.A6","DOIUrl":"https://doi.org/10.1255/SEW.2021.A6","url":null,"abstract":"A couple of columns ago we reported on work which had shown that weight fractions were often incorrect concentration units to use in quantitative chemometric studies. The article prompted some interesting feedback, not least a long “Letter to the Editor” from the originator of these ideas. His own work proving the importance of using volume fraction not weight fraction when the samples are made up of liquids of different densities had struggled to be published in chemistry journals. I was pleased that Howard had reached out to us from across the Atlantic, especially at a time of great upheaval in the USA, and with Ian Michael’s approval we have decided to feature Howard’s letter in this month’s column as it also sets straight a few misconceptions that were in our original look at this problem. So over to Howard!","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49325129","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}

{"title":"Quality and sampling error quantification for gold mineral resource estimation","authors":"S. Dominy, Saranchimeg Purevgerel, K. Esbensen","doi":"10.1255/sew.2020.a2","DOIUrl":"https://doi.org/10.1255/sew.2020.a2","url":null,"abstract":"Sampling is a vital component during all stages of the mine value chain. It includes the sampling of in situ material and broken rock for geological, metallurgical and geoenvironmental purposes. Sampling errors are defined in the context of the Theory of Sampling (TOS), where incorrect actions may lead to uncertainty and create a significant overall sampling + measurement error. The TOS breaks down this error into a series of contributions along the full value chain (the planning to assay-measurement process). Errors are additive throughout this pathway, unavoidably exacerbating risk. After collection, sampling errors also occur throughout all subsequent downstream processes contributing to uncertainty in test work and any decisions made thereon. Across the full mine value chain, the sum of these errors generate both financial and intangible losses. In essence, poorquality, non-representative sampling increases project risk and may consequently often lead to incorrect project valuation. There is hardly any other application field where this is as critically important than for Gold mineral resource estimation, because of the very low grades and the extremely irregular mineralisation heterogeneities encountered (Figure 1). Sampling—the first critical success factor in the mine value chain The data produced must be fit-forpurpose to contribute to mineral resources/ore reserves reported in accordance with the 2017 PERC or other international codes. Quality assurance/quality control (QA/QC) is critical to maintaining data integrity through documented procedures, sample security, and monitoring of precision, accuracy and contamination. Samples and their associated assays are key inputs into important decisions throughout the mine value chain. The TOS was first developed in the 1950s by Dr Pierre Gy to deal with sampling challenges in the mining industry, though it has far wider applications Saranchimeg Purevgerel Simon Dominy","PeriodicalId":35851,"journal":{"name":"Spectroscopy Europe","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49179656","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}