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Author |
Alfeld, M.; Janssens, K.; Sasov, A.; Liu, X.; Kostenko, A.; Rickers-Appel, K.; Falkenberg, G. |
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Title |
The use of full-field XRF for simultaneous elemental mapping |
Type |
P1 Proceeding |
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Year |
2010 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
111-118 |
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Keywords |
P1 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The characteristics of a Full-Field X-ray Fluorescence (FF-XRF) set-up for element-specific imaging, installed at the HASYLAB synchrotron radiation source, were determined. A lateral resolution of 10 μm and limits of detection in the percentage range were found. Further potential developments in CCDs available for FF-XRF are discussed and the use of polycapillary lenses as image transfer optics is illustrated in some explorative experiments. |
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Wos |
000278534600020 |
Publication Date |
2010-04-16 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
978-0-7354-0764-0 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor  |
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Times cited |
8 |
Open Access |
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Notes |
; This research was supported by the Interuniversity Attraction Poles Programme – Belgian Science Policy (IUAP VI/16) and by GOA XANES meets EELS (Research Fund University of Antwerp, Belgium). M. Alfeld is supported by the Research Foundation – Flanders (FWO). The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/ 2007-2013) under grant agreement no 226716. ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:82179 |
Serial |
5891 |
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Author |
De Vis, K.; Jacobs, P.; Caen, J.; Janssens, K. |
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Title |
The use of glass bricks in architecture in the 19th and 20th centuries : a case study |
Type |
P2 Proceeding |
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Year |
2010 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
194-201 |
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Keywords |
P2 Proceeding; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISSN |
978-0-87290-182-7 |
ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:124194 |
Serial |
5892 |
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Author |
Rindby, A.; Engström, P.; Janssens, K. |
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Title |
The use of scanning X-ray microprobe for simultaneous XRF/XRD studies of fly-ash particles |
Type |
A3 Journal article |
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Year |
1997 |
Publication |
Journal of synchotron radiation |
Abbreviated Journal |
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Volume |
4 |
Issue |
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Pages |
228-235 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:21714 |
Serial |
5899 |
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Author |
Kempenaers, L.; Vincze, L.; Janssens, K. |
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Title |
The use of synchrotron micro-XRF for characterisation of the micro-heterogeneity of low-Z reference materials containing heavy metals |
Type |
H3 Book chapter |
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Year |
1999 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:28443 |
Serial |
5901 |
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Author |
Centeno, S.A.; Hale, C.; Caro, F.; Cesaratto, A.; Shibayama, N.; Delaney, J.; Dooley, K.; van der Snickt, G.; Janssens, K.; Stein, S.A. |
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Title |
Van Gogh's Irises and Roses : the contribution of chemical analyses and imaging to the assessment of color changes in the red lake pigments |
Type |
A1 Journal article |
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Year |
2017 |
Publication |
Heritage science |
Abbreviated Journal |
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Volume |
5 |
Issue |
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Pages |
18 |
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Keywords |
A1 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Vincent van Gogh's still lifes Irises and Roses were investigated to shed light onto the degree to which the paintings had changed, both individually and in relation to each other since they were painted, particularly in regard to the fading of the red lakes. Non-invasive techniques, including macroscopic X-ray fluorescence mapping, reflectance imaging spectroscopy, and X-radiography, were combined with microanalytical techniques in a select number of samples. The in-depth microchemical analysis was necessary to overcome the complications that arise when evaluating by non-invasive methods alone the compositions of passages with complex layering and mixing of paints. The results obtained by these two approaches were complemented by color measurements performed on paint cross-sections and on protected edges, and with historical information provided by the artist's own descriptions, early reviews and reproductions, and the data was used to carry out digital color simulations that provided, to a certain extent, a visualization of how the paintings may have originally appeared. |
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Wos |
000401365400001 |
Publication Date |
2017-04-21 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2050-7445 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
21 |
Open Access |
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Notes |
; ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:143748 |
Serial |
5903 |
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Author |
Anitha, A.; Brasoveanu, A.; Duarte, M.F.; Hughes, S.M.; Daubechies, I.; Dik, J.; Janssens, K.; Alfeld, M. |
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Title |
Virtual underpainting reconstruction from X-ray fluorescence imaging data |
Type |
P1 Proceeding |
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Year |
2011 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1239-1243 |
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Keywords |
P1 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
; ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:124612 |
Serial |
5905 |
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Author |
Hellar-Kihampa, H.; De Wael, K.; Lugwisha, E.; Van Grieken, R. |
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Title |
Water quality assessment in Pangani river basin, Tanzania : natural and anthropogenic influences on concentrations of nutrients and inorganic ions |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
International journal of river basin management |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
55-75 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The ongoing rapid expansions of human activities and population dynamics have potential impact on the environmental quality of the Pangani river basin, one of the largest water resources in Tanzania, including possible loadings of different kinds of micro-contaminants. However, specific extents of the impacts are rather not well investigated. In this work, we assessed the environmental quality of the basin, based on seasonal characterisation of physicochemical water and sediments parameters, dissolved inorganic ions and nutrient loads. The contributions of geochemical processes and land-use practices were evaluated by multivariate correlations and principal component analysis (PCA). Hierarchical cluster analysis was used to classify similar water quality stations and identify the most and least enriched ones. Surface waters were slightly alkaline, characterised by low total dissolved solids (48652 mg/L). Extremely low oxygen concentration (2.0 mg/L) was also a cause of concern at one station. The Na+ and HCO3 − ions provided the dominant cation and anion, respectively. PCA identified weathering of carbonate and Na+ bearing rocks, gypsum dissolution and atmospheric deposition of sea-salt as the major factors controlling the ionic composition, contributing more than 60% of the spatial variance. Concentration profiles of the chemical species showed a generally low level of anthropogenic inputs, except at a few locations where nitrate and nitrite were significantly enriched above the limits of safe exposure, with patterns indicating influences of farming and livestock keeping. A seasonal difference was observed, with lower ion concentrations during the rainy season, likely due to the dilution effect of increased water discharge. The study provides new insights into the environmental quality of the basin, and indicates the need for continuous monitoring and assessment of the chemical species in the area. |
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Publication Date |
2013-01-07 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1571-5124 |
ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:104621 |
Serial |
5909 |
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Author |
Janssens, K. |
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Title |
X-ray based methods of analysis |
Type |
H3 Book chapter |
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Year |
2004 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
129-226 |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:50846 |
Serial |
5910 |
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Author |
Janssens, K. |
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Title |
X-ray fluorescence analysis |
Type |
H3 Book chapter |
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Year |
2003 |
Publication |
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Abbreviated Journal |
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Volume |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:42918 |
Serial |
5912 |
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Author |
Storme, P.; Fransen, E.; De Wael, K.; Caen, J. |
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Title |
X-Ray Fluorescence as an analytical tool for studying the copper matrices in the collection of the Museum Plantin-Moretus |
Type |
A1 Journal article |
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Year |
2017 |
Publication |
De gulden passer |
Abbreviated Journal |
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Volume |
95 |
Issue |
1 |
Pages |
7-33 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; History; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
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Edition |
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ISSN |
0777-5067 |
ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:144111 |
Serial |
5913 |
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Author |
Chukalina, M.; Simionovici, A.S.; Snigirev, A.; Drakopoulos, M.; Snigireva, I.; Adams, F.; Janssens, K. |
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Title |
X-ray fluorescence microtomography |
Type |
A3 Journal article |
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Year |
2001 |
Publication |
Poverhnost |
Abbreviated Journal |
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Volume |
3 |
Issue |
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Pages |
40-43 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Open Access |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:34058 |
Serial |
5914 |
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Author |
Simionovici, A.S.; Chukalina, M.; Drakopoulos, M.; Snigireva, I.; Snigirev, A.; Schroer, C.; Lengeler, B.; Janssens, K.; Adams, F. |
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Title |
X-ray fluorescence microtomography: experiment and reconstruction |
Type |
H3 Book chapter |
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Year |
1999 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
304-310 |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Times cited |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:26196 |
Serial |
5915 |
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Author |
Adams, F.; Janssens, K. |
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Title |
X-ray microanalysis: a new tool for environmental analysis |
Type |
H3 Book chapter |
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Year |
1996 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
183-199 |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:14257 |
Serial |
5916 |
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Author |
Vincze, L.; Janssens, K.; Adams, F. |
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Title |
X-ray optics for synchrotron-radiation-induced X-ray micro fluorescence at the european synchrotron-radiation facility, Grenoble |
Type |
A1 Journal article |
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Year |
1993 |
Publication |
Institute of physics conference series |
Abbreviated Journal |
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Volume |
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Issue |
130 |
Pages |
613-616 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Different optical designs for generating synchrotron x-ray micro beams suitable for use in an X-ray fluorescence microscope using an ESRF bending magnet X-ray source are compared. Attention is devoted to the spatial and energy distribution of the photons in the micro beam and to the minimum detection limits that are achievable with each alternative optical system. |
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Wos |
A1993LW34000126 |
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Edition |
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ISSN |
0305-2346 |
ISBN |
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Additional Links |
UA library record; WoS full record |
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Open Access |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:104541 |
Serial |
5917 |
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Author |
Terzano, R.; al Chami, Z.; Vekemans, B.; Janssens, K.; Miano, T.; Ruggiero, P. |
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Title |
μ-XANES speciation of Zn in rhizospheric soil and in edible plants grown on a polluted soil amended with compost |
Type |
H3 Book chapter |
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Year |
2007 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:64592 |
Serial |
5918 |
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| Permanent link to this record |
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Author |
de Nolf, W.; Vanmeert, F.; Janssens, K. |
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Title |
XRDUA : crystalline phase distribution maps by two-dimensional scanning and tomographic (micro) X-ray powder diffraction |
Type |
A1 Journal article |
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Year |
2014 |
Publication |
Journal of applied crystallography |
Abbreviated Journal |
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Volume |
47 |
Issue |
3 |
Pages |
1107-1117 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Imaging of crystalline phase distributions in heterogeneous materials, either plane projected or in virtual cross sections of the object under investigation, can be achieved by scanning X-ray powder diffraction employing X-ray micro beams and X-ray-sensitive area detectors. Software exists to convert the two-dimensional powder diffraction patterns that are recorded by these detectors to one-dimensional diffractograms, which may be analysed by the broad variety of powder diffraction software developed by the crystallography community. However, employing these tools for the construction of crystalline phase distribution maps proves to be very difficult, especially when employing micro-focused X-ray beams, as most diffraction software tools have mainly been developed having structure solution in mind and are not suitable for phase imaging purposes. XRDUA has been developed to facilitate the execution of the complete sequence of data reduction and interpretation steps required to convert large sequences of powder diffraction patterns into a limited set of crystalline phase maps in an integrated fashion. |
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Wos |
000336738500031 |
Publication Date |
2014-05-28 |
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ISSN |
0021-8898 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Times cited |
62 |
Open Access |
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Notes |
; The authors would like to thank the synchrotron beamline staff at ID15 (ESRF, Grenoble, France), MicroXAS (SLS, Villigen, Switzerland) and PO6/BL-L (Petra III/Hasylab, Hamburg, Germany) for accommodating the experiments presented in this paper. Support from FWO 'Big Science' project G0C1213N as well as from the BELSPO project 'S2ART' (SD/RI/04A) is acknowledged. ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:117758 |
Serial |
5920 |
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| Permanent link to this record |
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Author |
Padilla, R.; Janssens, K.; van Espen, P.; Van Grieken, R. |
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Title |
XRS activities at the Micro & Trace Analysis Centre (MiTAC), University of Antwerp, Belgium |
Type |
A3 Journal article |
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Year |
2006 |
Publication |
IAEA XRF newsletter |
Abbreviated Journal |
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Volume |
12 |
Issue |
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Pages |
13-16 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:65080 |
Serial |
5921 |
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| Permanent link to this record |
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Author |
Van der Stighelen, K.; Janssens, K.; van der Snickt, G.; Alfeld, M.; Van Beneden, B.; Demarsin, B.; Proesmans, M.; Marchal, G.; Dik, J. |
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Title |
Young Anthony van Dyck revisited : a multidisciplinary approach to a portrait once attributed to Peter Paul Rubens |
Type |
A3 Journal article |
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Year |
2014 |
Publication |
Art matters : international journal for technical art history |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
21-35 |
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Keywords |
A3 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Part of the collection of the Rubens House in Antwerp is a portrait of young Anthony van Dyck, alternatively attributed to Peter Paul Rubens and his pupil Anthony van Dyck. In order to reconstruct the genesis of the portrait in a manner that improves upon past investigations, a number of high-end technological methods, such as X-radiography, X-ray computer tomography, mammographic tomosynthesis and macroscopic X-ray fluorescence, have been employed to render the overpainted layers visible again. The results of the interdisciplinary examinations of the portrait of the youthful Van Dyck are impressive. The combined results allow the later additions to be peeled away until the original composition can be reached. Several pentimenti are easily discernible and refer to a rather immature hand that makes the authorship of Peter Paul Rubens very unlikely. What emerges is a portrait of an ambitious young man with a luxuriant head of hair and a slightly turned-up collar. The hat and cape were added later. The facial features are more recognisable and the execution of the bold curls points irrefutably in the direction of Anthony van Dyck as the author of his own portrait. |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:122562 |
Serial |
5922 |
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| Permanent link to this record |
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Author |
Harth, A.; van der Snickt, G.; Schalm, O.; Janssens, K.; Blanckaert, G. |
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Title |
The young Van Dyck's fingerprint : a technical approach to assess the authenticity of a disputed painting |
Type |
A1 Journal article |
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Year |
2017 |
Publication |
Heritage science |
Abbreviated Journal |
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Volume |
5 |
Issue |
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Pages |
22-13 |
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Keywords |
A1 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
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Abstract |
The painting Saint Jerome, part of the collection of the Maagdenhuis Museum (Antwerp, Belgium), is attributed to the young Anthony van Dyck (1613-1621) with reservations. The painting displays remarkable compositional and iconographic similarities with two early Van Dyck works (1618-1620) now in Museum Boijmans van Beuningen (Rotterdam) and Nationalmuseum (Stockholm). Despite these similarities, previous art historical research did not result in a clear attribution to this master. In this study, the works authenticity as a young Van Dyck painting was assessed from a technical perspective by employing a twofold approach. First, technical information on Van Dycks materials and techniques, here identified as his fingerprint, were defined based on a literature review. Second, the materials and techniques of the questioned Saint Jerome painting were characterized by using complementary imaging techniques: infrared reflectography, X-ray radiography and macro X-ray fluorescence scanning. The insights from this non-invasive research were supplemented with analysis of a limited number of cross-sections by means of field emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. The results demonstrated that the questioned paintings materials and techniques deviate from Van Dycks fingerprint, thus making the authorship of this master very unlikely. |
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Wos |
000403971300001 |
Publication Date |
2017-05-12 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2050-7445 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
1 |
Open Access |
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Notes |
; The authors are grateful to the staff of the Maagdenhuis Museum Antwerp, especially to Daniel Christiaens and Rudi van Velthoven, for their cooperation and enthusiastic support. Prof. Em. Claudine A. Chavannes-Mazel and Ph. D. student Alice Taatgen (University of Amsterdam) are acknowledged for the IRR recordings. We also would like to acknowledge Dr. Christina Currie (KIK/IRPA) and Catherine Fondaire (KIK/IRPA) for the XRR, and Eva Grieten (EMAT, University of Antwerp) for the FE-SEM-EDX. Finally, the authors wish to thank Prof. Dr. Katlijne van der Stighelen (University of Leuven) and Prof. Dr. Maximilaan Martens (Ghent University) for their art historical insights and additional comments. This research was supported by the Baillet Latour fund and Research Foundation Flanders (FWO). ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:143633 |
Serial |
5923 |
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| Permanent link to this record |
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Author |
Pouyet, E.; Cotte, M.; Fayard, B.; Salome, M.; Meirer, F.; Mehta, A.; Uffelman, E.S.; Hull, A.; Vanmeert, F.; Kieffer, J.; Burghammer, M.; Janssens, K.; Sette, F.; Mass, J. |
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Title |
2D X-ray and FTIR micro-analysis of the degradation of cadmium yellow pigment in paintings of Henri Matisse |
Type |
A1 Journal article |
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Year |
2015 |
Publication |
Applied physics A : materials science & processing |
Abbreviated Journal |
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Volume |
121 |
Issue |
3 |
Pages |
967-980 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The chemical and physical alterations of cadmium yellow (CdS) paints in Henri Matisse's The Joy of Life (1905-1906, The Barnes Foundation) have been recognized since 2006, when a survey by portable X-ray fluorescence identified this pigment in all altered regions of the monumental painting. This alteration is visible as fading, discoloration, chalking, flaking, and spalling of several regions of light to medium yellow paint. Since that time, synchrotron radiation-based techniques including elemental and spectroscopic imaging, as well as X-ray scattering have been employed to locate and identify the alteration products observed in this and related works by Henri Matisse. This information is necessary to formulate one or multiple mechanisms for degradation of Matisse's paints from this period, and thus ensure proper environmental conditions for the storage and the display of his works. This paper focuses on 2D full-field X-ray Near Edge Structure imaging, 2D micro-X-ray Diffraction, X-ray Fluorescence, and Fourier Transform Infra-red imaging of the altered paint layers to address one of the long-standing questions about cadmium yellow alteration-the roles of cadmium carbonates and cadmium sulphates found in the altered paint layers. These compounds have often been assumed to be photo-oxidation products, but could also be residual starting reagents from an indirect wet process synthesis of CdS. The data presented here allow identifying and mapping the location of cadmium carbonates, cadmium chlorides, cadmium oxalates, cadmium sulphates, and cadmium sulphides in thin sections of altered cadmium yellow paints from The Joy of Life and Matisse's Flower Piece (1906, The Barnes Foundation). Distribution of various cadmium compounds confirms that cadmium carbonates and sulphates are photo-degradation products in The Joy of Life, whereas in Flower Piece, cadmium carbonates appear to have been a [(partially) unreacted] starting reagent for the yellow paint, a role previously suggested in other altered yellow paints. |
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Wos |
000364914100017 |
Publication Date |
2015-06-03 |
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Series Issue |
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Edition |
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ISSN |
0947-8396; 1432-0630 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:130290 |
Serial |
7382 |
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Author |
Kardel, F.; Wuyts, K.; De Wael, K.; Samson, R. |
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Title |
Assessing atmospheric dry deposition via water-soluble ionic composition of roadside leaves |
Type |
A1 Journal article |
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Year |
2020 |
Publication |
Journal of environmental science and health : part A: toxic/hazardous substances and environmental engineering |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1-9 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
This study focuses on the water-soluble ion concentrations in the washing solution of leaves of different roadside tree species at three sites in Iran to estimate the ionic composition of the dry deposition of ambient air particulates. All considered water-soluble ion concentrations were significantly higher next to the roads with high traffic density compared to the reference site with low traffic density. The PCA results showed that Ca2+, Mg2+, and originated mainly from traffic activities and geological sources, and Na+, Cl-, K+ and F- from sea salts. In addition to sea salt, K+ and F- were also originated from anthropogenic sources i.e. industrial activities, biomass burning and fluorite mining. Moreover, the concentration of the water-soluble ions depended on species and site. C. lawsoniana had significantly higher ion concentrations in its leaf washing solution compared to L. japonicum and P. brutia which indicates C. lawsoniana is the most suitable species for accumulating of atmospheric dry deposition. From our results, it can be concluded that sites with similar traffic density can have different particle loads and water-soluble ion species, and that concentrations in leaf-washing solutions depend on site conditions and species-specific leaf surface characteristics. |
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Wos |
000527821700001 |
Publication Date |
2020-04-21 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
; ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:169584 |
Serial |
6451 |
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Author |
De Jong, M. |
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Title |
A highly accurate portable electrochemical sensor for cocaine : from methodology to testing in the field |
Type |
Doctoral thesis |
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Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
263 p. |
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Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:170912 |
Serial |
6538 |
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Author |
Eliaerts, J. |
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Title |
Qualitative and quantitative determination of cocaine using mid-infrared spectroscopy and chemometrics |
Type |
Doctoral thesis |
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Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
184 p. |
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Keywords |
Doctoral thesis; Law; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:169398 |
Serial |
6589 |
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| Permanent link to this record |
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Author |
Anaf, W.; Cabal, A.; Robbe, M.; Schalm, O. |
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Title |
Real-time wood behaviour : the use of strain gauges for preventive conservation applications |
Type |
A1 Journal article |
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Year |
2020 |
Publication |
Sensors |
Abbreviated Journal |
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Volume |
20 |
Issue |
1 |
Pages |
305 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
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Abstract |
Within the heritage field, the application of strain gauges on wood surfaces is a little-explored but inexpensive and effective method to analyse the environmental appropriateness of rooms for the wooden heritage collections they contain. This contribution proposes a wood sensor connected to a data logger to identify short moments with an elevated risk of harm. Two experiments were performed to obtain insights pertaining to the applicability of wood sensors to evaluate preservation conditions. (1) The representativeness of strain gauges on dummies was tested for their use in evaluating the preservation conditions of a range of wooden objects exposed to the same environment. For this, three situations were mimicked: a bare wood surface, a wood surface covered with a preparation layer, and a wood surface covered with a preparation and varnish layer. (2) The usability of strain gauges to monitor the wood behaviour in real-time measurements was tested with a monitoring campaign of almost two years in a church where a new heating system was installed. The results of both experiments are promising, and the authors encourage a broader application of strain gauges in the heritage field. |
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Wos |
000510493100305 |
Publication Date |
2020-01-06 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
; This research was funded by the Belgian Federal Public Planning Service Science Policy (BELSPO) under project number BR/132/A6/AIRCHECQ. ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:166595 |
Serial |
6592 |
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Author |
Bencs, L.; Horemans, B.; Buczyńska, A.J.; Deutsch, F.; Degraeuwe, B.; Van Poppel, M.; Van Grieken, R. |
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Title |
Seasonality of ship emission related atmospheric pollution over coastal and open waters of the North Sea |
Type |
A1 Journal article |
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Year |
2020 |
Publication |
Atmospheric Environment: X |
Abbreviated Journal |
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Volume |
7 |
Issue |
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Pages |
100077-11 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The seasonal changes of a large set of atmospheric pollutants (i.e., gases, water-soluble aerosols, metallic/elemental components and black carbon (BC) content) have been studied over the southern bight of the North Sea (the Belgian Continental Shelf) and the English Channel during several marine sampling campaigns, carried out in 2010-2011. A coastal research station at De Haan, Belgium was concurrently used as a background air monitoring site. Size-segregated aerosols (PM1, PM2.5-1, PM10-2.5) were analyzed for particulate mass, elemental content and water-soluble (ionic) compounds, while the equivalent BC content in PM10 was monitored with an Aethalometer. The results clearly demonstrated that the aerosols originating from ship exhaust emissions contributed mostly to fine fraction (PM1), and to a lesser extent to medium-sized fraction (PM2.5-1), whereas components of sea spray and of mineral/soil origin were dominating in the medium-size and coarse aerosol fractions. Looking at seasonal differences, more ship emission related components occurred in the fine and medium-sized PM during winter. Mineral aerosol components were more apparent in coarse PM and especially during the cold season, increased levels were noted. Similarly, higher concentrations of marine fine PM were found during winter, likely due to more extensive ship emissions and/or calm weather conditions. Gaseous pollutants (e.g., HNO2, HNO3, HCl, SO2, NH3) originating from exhaust fumes of ocean-going ships mostly reached the maximum levels in the cold season as well, thus supporting the more intense formation of secondary aerosols. The seasonal trends of total (inorganic) ionic species sampled on the open sea and at the coastal station were usually similar to those of the corresponding PM masses, peaking in the cold season. Sea salt bound fine sulfate and nitrate peaked in spring or the cold season for marine areas, whereas for the coastal site they clearly reached the maximum in the cold season. Ammonium-bound nitrates and sulfates in each PM fraction reached their peak air levels in the cold season over marine sites. Similar seasonal trends could be observed for the coastal station. The general tendency of aerosol distribution over the study areas was independent of the sampling site: the higher the aerosol mass on the open sea with ship traffic, the higher the suspended particulate mass sampled at the coast. |
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Place of Publication |
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Editor |
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Language |
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Wos |
000571429900007 |
Publication Date |
2020-05-14 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2590-1621 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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; The participating researchers of this study gratefully acknowledge the funding from the Belgian Science Policy Office (BELSPO) under the SHIPFLUX project (assignation No.: SD/NS/07A). The researchers thank Jan Van Loock (UA), Andr.e Cattrijsse (VLIZ) and Frank Broucke (VLIZ) for their help with the logistics, sampling and organization of the field/marine studies and Francisco (Tjess) Hernandez (VLIZ) for his help in getting access to the weather data. The participants also want to express their sincere thanks to the crew of R/V Belgica for their help and cooperation in the marine expeditions. ; |
Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:171924 |
Serial |
6599 |
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Author |
Van Loon, J.; De Jong, M.; De Wael, K.; Du Bois, E. |
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Title |
Transposing testing from lab to on-site environment : a case of cocaine powder sampling |
Type |
P3 Proceeding |
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Year |
2020 |
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P3 Proceeding; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Product development |
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Abstract |
This paper reports on the transition process to convert a specific lab technique to the on-site, real-life environment. Bringing a lab test to an on-site environment involves many difficulties regarding to the context, people skills and environmental support. Within this project, a case about sampling for an electrochemical measurement, was investigated as a basis to reason upon some general conclusions related to the process of transposing lab-tests to an on-site environment. The current lab test was analysed and compared with a focus group discussion with future users. Based on the findings, assumptions for the new sampling technique in the specific case were formulated. New low-tech methods to achieve the sampling were extensively tested and verified. Starting from this chosen case an argumentation was set up to generalise the conclusions, by reasoning on other cases of products that already passed this transition to the field. Based on a comparison, we could discuss that the selected parameters related to impact of the context environment, of the people that should handle the tests, related to the reasons for transposing the technology, and related to the technology that will be transposed to the on-site environment, were of importance of almost all cases and can therefore be considered as context-independent and related to the transfer to on-site testing. |
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978-94-6384-131-3 |
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UA library record |
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Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:169896 |
Serial |
6637 |
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Author |
Reggers, C.; Van Grieken, R. |
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Title |
2,2′-Diaminodiethylamine cellulose powder for trace metal preconcentrations from water |
Type |
A3 Journal article |
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Year |
1984 |
Publication |
Fresenius' Zeitschrift für analytische Chemie |
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Volume |
317 |
Issue |
5 |
Pages |
520-526 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Cellulose powder with 2,2′-diaminodiethylamine (DEN) functional groups exhibits efficient complexation of transition metal cations. Collection yields above 85 % are obtained up to a chelation capacity of 1.5 meq per gram. Since a good collection is obtained for a pH up from 5, no pH adjustments have to be made for natural water samples. The cellulose-DEN powder is insensitive to abundant substances like alkali and alkaline earth ions, and humic matter. Some cations can be eluted efficiently in a small volume of HNO3. Blank concentration levels from the cellulose-DEN powder are reported. |
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2004-11-17 |
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ISSN |
0016-1152 |
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no |
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Call Number |
UA @ admin @ c:irua:116640 |
Serial |
7383 |
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Author |
Van Grieken, R. |
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Title |
2014 Award for best referee of X-Ray Spectrometry |
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Editorial |
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2014 |
Publication |
X-ray spectrometry |
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Volume |
43 |
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6 |
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311-311 |
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Editorial; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000344178700001 |
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2014-09-27 |
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0049-8246 |
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UA library record; WoS full record |
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no |
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Call Number |
UA @ admin @ c:irua:121210 |
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7385 |
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Author |
Balashova, I.O.; Tolbin, A.Y.; Tarakanov, P.A.; Krot, A.R.; Fedorova, K., V; Sergeeva, I.A.; Trashin, S.A.; De Wael, K.; Pushkarev, V.E.; Koifman, M.O.; Ponomarev, G., V. |
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Title |
A covalently linked dyad based on zinc phthalocyanine and methylpheophorbide α : synthetic and physicochemical study |
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A1 Journal article |
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Year |
2021 |
Publication |
Macroheterocycles |
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Volume |
14 |
Issue |
1 |
Pages |
40-50 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The first covalently linked conjugate of metal phthalocyaninate and chlorin e(6) derivative has been obtained by transesterification of alpha-ketomethyl ester in methylpheophorbide a with zinc(II) 2-(2-hydroxymethylbenzyloxy)-9(10),16(17),23(24)-tri-tert-butylphthalocyaninate under mild conditions. The dyad exhibits a panchromatic nature revealing both the phthalocyanine and pheophorbide derived bands in the UV-Vis absorption spectrum. The H-1 NMR spectroscopy data combined with theoretical calculations indicate the presence of spatial intramolecular interactions between the phthalocyanine, pheophorbide and spacer fragments of the dyad allowing to forecast its enhanced nonlinear optical properties, as well as the characteristic energy transfer from the excited pheophorbide subunit to the phthalocyanine core. Indeed, when excited in the UV-Vis range, the conjugate shows red fluorescence with the spectral maximum at 686 nm, which is close to the one of the initial zinc phthalocyaninate. Furthermore, the dyad effectively generates singlet oxygen and, in the presence of polyvinylpyrrolidone (PVP) as biocompatible solubilizer, forms stable micellar saline solutions with the particles ranged in size between 40 and 100 nm. These nanoparticles represent promising third-generation photosensitizing systems for application in theranostics. |
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000659682000003 |
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2021-06-25 |
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OpenAccess |
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Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:179196 |
Serial |
7386 |
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Author |
De Meyer, S.; Vanmeert, F.; Janssens, K.; Storme, P. |
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Title |
A mobile scanner for xrpd-imaging of paintings in transmission and reflection geometry |
Type |
P1 Proceeding |
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Year |
2017 |
Publication |
ACTA ARTIS ACADEMICA 2017: PAINTING AS A STORY
T2 – 6th Interdisciplinary ALMA Conference, JUN 01-03, 2017, Brno, CZECH REPUBLIC |
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29-38 |
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P1 Proceeding; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
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Abstract |
In this paper the possibilities and limitations of a non-invasive prototype of macroscopic X-ray powder diffraction scanning device employed in transmission and reflection mode are demonstrated. Contrarily to e.g. macroscopic X-ray fluorescence scanners, which gather information on the elemental level, the prototype instrument allows to obtain information on the crystallographic structure of the components. When applied to cultural heritage artefacts, it becomes possible to identify and localize crystalline pigments. Furthermore, it became clear that different information can be available depending on the geometry of the scanner components. In transmission mode information over the entire stratigraphy of the painting is gathered, which is useful to e.g. identify background substrates and major pigments. On the other hand, reflection-XRPD is a surface-sensitive technique and allows the identification of pigments and degradation products located on the surface. The data acquired during both experiments can be presented as two-dimensional distribution maps which show the spatial distribution of every identified pigment. The complementary nature of transmission and reflectionmode makes it possible to gain more insight into the stratigraphy of the painting which is valuable information for conservation and restoration scientists. |
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000430517600002 |
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978-80-87108-75-8 |
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UA library record; WoS full record; WoS citing articles |
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no |
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Call Number |
UA @ admin @ c:irua:189869 |
Serial |
7392 |
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