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Author |
Tsuji, K.; Takenaka, H.; Wagatsuma, K.; de Bokx, P.K.; Van Grieken, R.E. |
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Title |
Enhancement of X-ray fluorescence intensity from an ultra-thin sandwiched layer at grazing-emission angles |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Spectrochimica acta: part B : atomic spectroscopy |
Abbreviated Journal |
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Volume |
54 |
Issue |
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Pages |
1881-1888 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000084169300013 |
Publication Date |
2002-07-26 |
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Series Issue |
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Edition |
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ISSN |
0584-8547; 1873-3565 |
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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:27585 |
Serial |
7918 |
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Author |
Peng, L.; Liu, Y.; Sun, J.; Wang, D.; Dai, X.; Ni, B.-J. |
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Title |
Enhancing immobilization of arsenic in groundwater: A model-based evaluation |
Type |
A1 Journal article |
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Year |
2017 |
Publication |
Journal of cleaner production |
Abbreviated Journal |
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Volume |
166 |
Issue |
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Pages |
449-457 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The mobilization of arsenic (As) in aquatic environment (groundwater) can cause severe environmental and healthy issues. To develop remediation strategies, we proposed a comprehensive mathematical model to describe the As removal in a arsenite (As (III)) oxidizing and ferrous iron (Fe (II)) oxidizing denitrifying granular biofilm system. In the model framework, the growth-linked microbial oxidation of As (III) and Fe (II) was coupled to chemolithotrophic denitrification of one-step reduction of nitrate to nitrogen gas. Meanwhile, the precipitation of ferric iron (Fe (III)) and adsorption of arsenate (As (V)) onto the biogenic Fe (III) (hydr)oxides were also considered. The model was calibrated by comparing the model predictions against experimental data from batch experiments. The validity of the model was further demonstrated through testing against long-term experimental results from five independent bioreactors with different reactor configurations and operational conditions. Modeling results revealed that the granule size would exert a limited impact on arsenic and iron removal. Nevertheless, their removal efficiencies increased rapidly with the increase of hydraulic retention time (HRT) from 1 h to 12 h, but became independent of HRT as it further increased. The established model framework enables interpretation of a range of experimental observations on As and Fe removal and helps to identify the optimal conditions for enhanced arsenic remediation. (C) 2017 Elsevier Ltd. All rights reserved. |
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000412607100046 |
Publication Date |
2017-08-09 |
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ISSN |
0959-6526 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:146635 |
Serial |
7919 |
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Author |
De Cocker, P.; Bessiere, Y.; Hernandez-Raquet, G.; Dubos, S.; Mozo, I.; Gaval, G.; Caligaris, M.; Barillon, B.; Vlaeminck, S.E.; Sperandio, M. |
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Title |
Enrichment and adaptation yield high anammox conversion rates under low temperatures |
Type |
A1 Journal article |
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Year |
2018 |
Publication |
Bioresource technology |
Abbreviated Journal |
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Volume |
250 |
Issue |
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Pages |
505-512 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
This study compared two anammox sequencing batch reactors (SBR) for one year. SBRconstantT was kept at 30 °C while temperature in SBRloweringT was decreased step-wise from 30 °C to 20 °C and 15 °C followed by over 140 days at 12.5 °C and 10 °C. High retention of anammox bacteria (AnAOB) and minimization of competition with AnAOB were key. 5-L anoxic reactors with the same inoculum were fed synthetic influent containing 25.9 mg NH4+-N/L and 34.1 mg NO2−-N/L (no COD). Specific ammonium removal rates continuously increased in SBRconstantT, reaching 785 mg NH4+-N/gVSS/d, and were maintained in SBRloweringT, reaching 82.2 and 91.8 mg NH4+-N/gVSS/d at 12.5 and 10 °C respectively. AnAOB enrichment (increasing hzsA and 16S rDNA gene concentrations) and adaptation (shift from Ca. Brocadia to Ca. Kuenenia in SBRloweringT) contributed to these high rates. Rapidly settling granules developed, with average diameters of 1.2 (SBRconstantT) and 1.6 mm (SBRloweringT). Results reinforce the potential of anammox for mainstream applications. |
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Wos |
000430740000062 |
Publication Date |
2017-11-25 |
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Abbreviated Series Title |
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Edition |
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ISSN |
0960-8524 |
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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:148998 |
Serial |
7920 |
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Author |
Smits, J.; Van Grieken, R. |
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Title |
Enrichment of trace anions from water with 2,2'-diaminodiethylamine cellulose filters |
Type |
A1 Journal article |
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Year |
1981 |
Publication |
Analytica chimica acta |
Abbreviated Journal |
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Volume |
123 |
Issue |
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Pages |
9-17 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Cellulose filters with immobilized 2,2'-diaminodiethylamine (DEN) functional groups are studied for trace anion preconcentration from aqueous solution, with subsequent x-ray fluorescence measurements. For most oxoanions with a central metal atom, nearly quantitative collection can be achieved by 10-cm2 DEN filters under the following optimized conditions: pH 36, filtration rate up to 0.5 ml cm-2 min-1, and sample volume up to 100 ml cm-2. The collection yield is independent of the trace oxoanion concentration up to at least 1.5 μmol cm-2. Although the DEN filter exhibits some selectivity towards oxoanions with a central metal atom, ionic strength affects the results; the collection efficiency is strongly depressed with salt (e.g. NaCl) concentrations above 0.01 M. The applicability of the DEN filter in anion collection is therefore limited to dilute solutions. |
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Wos |
A1981LA22400002 |
Publication Date |
2002-07-25 |
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Edition |
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ISSN |
0003-2670; 1873-4324 |
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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:116437 |
Serial |
7922 |
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Permanent link to this record |
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Author |
Vanderborght, B.M.; Van Grieken, R.E. |
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Title |
Enrichment of trace metals in water by adsorption on activated carbon |
Type |
A1 Journal article |
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Year |
1977 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
49 |
Issue |
2 |
Pages |
311-316 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0003-2700; 5206-882x |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:116513 |
Serial |
7923 |
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Author |
Van Grieken, R.; Bresseleers, K.; Smits, J.; Vanderborght, B.; Vanderstappen, M. |
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Title |
Enrichment procedures for water analysis by X-ray energy spectrometry |
Type |
P3 Proceeding |
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Year |
1976 |
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 |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:113634 |
Serial |
7924 |
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Author |
Alexiades, V.; Autrique, D. |
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Title |
Enthalpy model for heating, melting, and vaporization in laser ablation |
Type |
A1 Journal article |
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Year |
2010 |
Publication |
Electronic journal of differential equations |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1-13 |
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Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
Laser ablation is used in a growing number of applications in various areas including medicine, archaeology, chemistry, environmental and materials sciences. In this work the heat transfer and phase change phenomena during nanosecond laser ablation of a copper (Cu) target in a helium (He) background gas at atmospheric pressure are presented. An enthalpy model is outlined, which accounts for heating, melting, and vaporization of the target. As far as we know, this is the first model that connects the thermodynamics and underlying kinetics of this challenging phase change problem in a selfconsistent way. |
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Wos |
000455668500001 |
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Abbreviated Series Title |
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Edition |
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ISSN |
1072-6691 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:190550 |
Serial |
7925 |
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Permanent link to this record |
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Author |
Xhoffer, C.; Van Grieken, R. |
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Title |
Environmental aerosol characterization by single particle analysis techniques |
Type |
H3 Book chapter |
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Year |
1993 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
207-245
T2 - Environmental particles; 2 / Buffle, |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA library record |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:6267 |
Serial |
7926 |
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Author |
Delalieux, F.; Cardell, C.; Todorov, V.; Dekov, V.; Van Grieken, R. |
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Title |
Environmental conditions controlling the chemical weathering of the Madara Horseman monument, NE Bulgaria |
Type |
A1 Journal article |
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Year |
2001 |
Publication |
Journal of cultural heritage |
Abbreviated Journal |
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Volume |
2 |
Issue |
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Pages |
43-54 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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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 |
1296-2074 |
ISBN |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:32822 |
Serial |
7927 |
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Permanent link to this record |
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Author |
Camuffo, D.; Van Grieken, R.; Busse, H.-J.; Sturaro, G.; Valentino, A.; Bernardi, A.; Blades, N.; Shooter, D.; Gysels, K.; Deutsch, F.; Wieser, M.; Kim, O.; Ulrych, U. |
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Title |
Environmental monitoring in four European museums |
Type |
A1 Journal article |
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Year |
2001 |
Publication |
Atmospheric environment : an international journal |
Abbreviated Journal |
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Volume |
35 |
Issue |
S1 |
Pages |
S127-S140 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000169404000015 |
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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 |
1352-2310 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Times cited |
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Open Access |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:36082 |
Serial |
7928 |
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Permanent link to this record |
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Author |
Jambers, W.; Van Grieken, R.E. |
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Title |
Environmental problems |
Type |
H3 Book chapter |
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Year |
1997 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
803-819
T2 - Handbook of microscopy: applications |
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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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Open Access |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:18789 |
Serial |
7929 |
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Permanent link to this record |
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Author |
Jochems, P.; Satyawali, Y.; Diels, L.; Dejonghe, W. |
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Title |
Enzyme immobilization on/in polymeric membranes : status, challenges and perspectives in biocatalytic membrane reactors (BMRs) |
Type |
A1 Journal article |
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Year |
2011 |
Publication |
Green chemistry : cutting-edge research for a greener sustainable future |
Abbreviated Journal |
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Volume |
13 |
Issue |
7 |
Pages |
1609-1623 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Immobilization of enzymes is beneficial in terms of improving the process economics by enabling enzyme re-use and enhancing overall productivity and robustness. Increasingly, membranes are thought to be good supports for enzyme immobilization. These resulting biocatalytic membranes are integrated in reactors known as biocatalytic membrane reactors (BMRs) which enable the integration of biocatalysis and separation. Often the available commercial membranes require modifications to make them suitable for enzyme immobilization. Different immobilization techniques can be used on such suitable membranes, but no general rules exist for making a choice between them. Despite the advantages of BMR application, there are some issues which need to be addressed in order to achieve up-scaling of such systems. In this review, the different aspects of enzyme immobilization on membranes are discussed to show the complexity of this interdisciplinary technology. In addition, the existing issues which require further investigation are highlighted. |
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Wos |
000292450600002 |
Publication Date |
2011-05-26 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISSN |
1463-9262; 1463-9270 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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Approved |
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Call Number |
UA @ admin @ c:irua:89567 |
Serial |
7930 |
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Permanent link to this record |
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Author |
de Maeyer-Worobiec, A.; Dekov, V.M.; Laane, R.W.P.M.; Van Grieken, R. |
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Title |
EPXMA survey of shelf sediments (Southern Bight, North Sea): a glance beyond the XRD-invisible |
Type |
A1 Journal article |
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Year |
2009 |
Publication |
Microchemical journal |
Abbreviated Journal |
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Volume |
91 |
Issue |
1 |
Pages |
21-31 |
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Keywords |
A1 Journal article; Laboratory Experimental Medicine and Pediatrics (LEMP); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Shelf sediments of the southern North Sea, were studied with a microanalytical [electron probe X-ray microanalysis (EPXMA)] and two bulk [X-ray diffraction (XRD) and X-ray fluorescence (XRF)] techniques. The investigation proved that the promptness of the microanalytical method is combined with a reasonable analytical reliability. XRD studies of such a type of sediments with monotonous mineral composition are not able to provide mineralogical information beyond the main well-crystalline minerals and the mineralogical quantitative characteristic of the sediment based on XRD estimations are incorrect. The EPXMA mineralogical interpretations are based on the statistical evaluation of a huge data set (thousands of mineral particles) and provide a rather correct quantitative determination of the main minerals. The comparative EPXMAXRF study revealed that the Al, Si, K, Ca, Fe and to some extent Ti contents estimated by EPXMA are fairly reliable. In this respect the accuracy of the EPXMA-based mineral identification of the pure silicates, pure aluminosilicates, and Al-, Ca-, Fe- and Ti-containing minerals with simple composition is very high. Mg-calcite, augite and apatite determinations are assessed to be correct. The supposed accuracy of the clay mineral determinations is slightly lower (7080%) than that of the other main minerals due to the complex and varying composition of the clays. The identification of XRD-invisible accessory minerals and quantification of their presence in the sediments is an essential advantage of the EPXMA, which makes it a useful approach in tracing the origin of the sediments, the pathways of their transport and the geochemical processes they have undergone. However, the EPXMA has several flaws, which need to be solved in the future sediment investigations: (1) calibration with natural standards is needed in order to provide a higher accuracy of the mineral determinations; (2) any EPXMA study of sediments needs to be secured with XRF examinations of selected samples since EPXMA gives only semi-quantitative information about the abundance of the elements; (3) ultra-thin window EPXMA of low-Z elements has to be used since some of them (O, C) are always present in the main sediment components: silicates, aluminosilicates, carbonates and metal oxyhydroxides; (4) the interpretations of the clay fraction have to be supported with detailed XRD investigations of selected samples, while the mineralogy of the silt and sand fractions needs to be backed up with optical microscopy studies. The information from different analytical techniques (EPXMA with XRFXRD-optical microscopy of selected samples) combined with the knowledge about the most possible minerals in a given environment, would give the most reliable results in studying mineralogical composition of shelf sediments. |
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Wos |
000262963300006 |
Publication Date |
2008-07-14 |
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|
ISSN |
0026-265x; 0026-265x |
ISBN |
|
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 |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:71604 |
Serial |
7933 |
|
Permanent link to this record |
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Author |
Mao, D.; Lookman, R.; van de Weghe, H.; Weltens, R.; Vanermen, G.; Brucker, N.; Diels, L. |
|
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Title |
Estimation of ecotoxicity of petroleum hydrocarbon mixtures in soil based on HPLC-GCXGC analysis |
Type |
A1 Journal article |
|
Year |
2009 |
Publication |
Chemosphere |
Abbreviated Journal |
|
|
|
Volume |
77 |
Issue |
11 |
Pages |
1508-1513 |
|
|
Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
|
|
Abstract |
Detailed HPLCGCXGC/FID (high performance liquid chromatography followed by comprehensive two-dimensional gas chromatography with flame-ionization detection) analysis of oil-contaminated soils was performed to interpret results of selected acute ecotoxicity assays. For the five ecotoxicity assays tested, plant seed germination and Microtox® were selected as most sensitive for evaluating ecotoxicity of the oil in the soil phase and in the leaching water, respectively. The measured toxicity for cress when testing the soil samples did not correspond to TPH concentration in the soil. A detailed chemical composition analysis of the oil contamination using HPLCGCXGC/FID allows to better predict the ecotoxicological risk and leaching potential of petroleum hydrocarbons in soil. Cress biomass production per plant was well correlated to the total aromatic hydrocarbon concentration (R2 = 0.79, n = 6), while cress seed germination was correlated (R2 = 0.82, n = 6) with total concentration of highly water-soluble aromatic hydrocarbons (HSaromatics). The observed ecotoxicity of the leaching water for Microtox-bacteria related well to calculated (based on the HPLCGCXGC/FID results) petroleum hydrocarbon equilibrium concentrations in water. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
|
Wos |
000272598700008 |
Publication Date |
2009-10-31 |
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Series Editor |
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Series Title |
|
Abbreviated Series Title |
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|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0045-6535; 1879-1298 |
ISBN |
|
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 |
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Approved |
no |
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|
Call Number |
UA @ admin @ c:irua:80310 |
Serial |
7935 |
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Permanent link to this record |
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Author |
Vazquez, C.; Boeykens, S.; Palacios, O.; Caracciolo, N.; Kontozova-Deutsch, V.; Krupińska, B.; Van Grieken, R. |
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Title |
Estudio de la contaminacion del aire urbano en cuatro museos de Argentina |
Type |
H3 Book chapter |
|
Year |
2013 |
Publication |
|
Abbreviated Journal |
|
|
|
Volume |
|
Issue |
|
Pages |
271-282
T2 - Patrimonio cultural : la gestion, el |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
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Publication Date |
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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 |
|
Edition |
|
|
|
ISSN |
|
ISBN |
978-987-1323-31-9 |
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 |
no |
|
|
Call Number |
UA @ admin @ c:irua:110908 |
Serial |
7936 |
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Permanent link to this record |
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Author |
Markowicz, A.; Storms, H.; Van Grieken, R. |
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Title |
Evaluation of an equation for bremsstrahlung background in electron-probe X-ray microanalysis of composite samples |
Type |
A1 Journal article |
|
Year |
1986 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
|
|
|
Volume |
15 |
Issue |
2 |
Pages |
131-133 |
|
|
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
|
|
Abstract |
A new equation for predicting the generated bremsstrahlung background intensity in electron-probe x-ray microanalysis has been verified experimentally. This equation is applicable to all bulk composite specimens and reduces to Kramers' equation for pure elements only. The experimental verification has been carried out for Al2O3, Fe2O3 and ZrO2 with radiation energies from 4.2 to 14.8 keV. The predicted bremsstrahlung intensities are in good agreement with the experimental data. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
A1986C017300009 |
Publication Date |
2005-05-28 |
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Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0049-8246 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
|
Times cited |
|
Open Access |
|
|
|
Notes |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:113873 |
Serial |
7937 |
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Permanent link to this record |
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Author |
Visser, W.J.; Van de Vyver, F.L.; Verbueken, A.H.; d'Haese, P.; Bekaert, A.B.; Van Grieken, R.E.; Duursma, S.A.; de Broe, M.E. |
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Title |
Evaluation of different techniques used to determine aluminium in patients with chronic renal failure |
Type |
P3 Proceeding |
|
Year |
1985 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
|
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Keywords |
P3 Proceeding; Pathophysiology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
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Publication Date |
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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 |
|
ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
|
Open Access |
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|
Notes |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:117496 |
Serial |
7938 |
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Permanent link to this record |
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Author |
Osán, J.; de Hoog, J.; van Espen, P.; Szalóki, I.; Ro, C.-U.; Van Grieken, R. |
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Title |
Evaluation of energy-dispersive x-ray spectra of low-Z elements from electron-probe microanalysis of individual particles |
Type |
A1 Journal article |
|
Year |
2001 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
|
|
|
Volume |
30 |
Issue |
|
Pages |
419-426 |
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|
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
|
Wos |
000172347800010 |
Publication Date |
2002-08-25 |
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Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0049-8246 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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|
Impact Factor |
|
Times cited |
|
Open Access |
|
|
|
Notes |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:36091 |
Serial |
7939 |
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Permanent link to this record |
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Author |
Robberecht, H.; Van Grieken, R.; Shani, J.; Barak, S. |
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Title |
Evaluation of multi-element analysis of blood serum by energy-dispersive x-ray spectrometry |
Type |
A1 Journal article |
|
Year |
1982 |
Publication |
Analytica chimica acta |
Abbreviated Journal |
|
|
|
Volume |
136 |
Issue |
|
Pages |
285-292 |
|
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
|
|
Abstract |
Conventional energy-dispersive x-ray fluorescence is applied in the analysis of blood serum to give the concentrations of 710 elements simultaneously with minimal manipulation of the samples. Simple spotting onto a Mylar carrier of 250 μl of serum, doped with two internal standards, was chosen as the sample preparation step. Some 200 serum samples, analyzed in replicate (n = 26), were used to evaluate this procedure. The detection limits are 4 μg ml-1 for K and Ca, 0.50.2 μg ml-1 for Fe, Cu, Pb and Zn, and less than 0.1 μg ml-1 for Se, Rb and Sr. Well above these limits, the standard deviation is around 10%. Comparison with the results of other measurements on the same samples indicates an accuracy of that order. The simplicity and high throughput, and the possibility of automating the x.r.f. measurements, make the proposed procedure suitable for screening large numbers of sera. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
A1982NL48600032 |
Publication Date |
2002-07-25 |
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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 |
|
Series Issue |
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Edition |
|
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|
ISSN |
0003-2670; 1873-4324 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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|
Impact Factor |
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Times cited |
|
Open Access |
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Notes |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:116440 |
Serial |
7940 |
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Permanent link to this record |
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Author |
Schelles, W.; de Gendt, S.; Müller, V.; Van Grieken, R. |
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Title |
Evaluation of secondary cathodes for glow discharge mass spectrometry analysis of different nonconducting sample types |
Type |
A1 Journal article |
|
Year |
1995 |
Publication |
Applied spectroscopy |
Abbreviated Journal |
|
|
|
Volume |
49 |
Issue |
|
Pages |
939-944 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
A1995RK40300011 |
Publication Date |
2005-05-21 |
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Series Editor |
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Series Title |
|
Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0003-7028 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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|
Impact Factor |
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Times cited |
|
Open Access |
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Notes |
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Approved |
no |
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|
Call Number |
UA @ admin @ c:irua:12350 |
Serial |
7941 |
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Permanent link to this record |
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Author |
Sankaran, K.; Swerts, J.; Carpenter, R.; Couet, S.; Garello, K.; Evans, R.F.L.; Rao, S.; Kim, W.; Kundu, S.; Crotti, D.; Kar, G.S.; Pourtois, G. |
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Title |
Evidence of magnetostrictive effects on STT-MRAM performance by atomistic and spin modeling |
Type |
P1 Proceeding |
|
Year |
2018 |
Publication |
2018 Ieee International Electron Devices Meeting (iedm) |
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
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Keywords |
P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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|
Abstract |
For the first time, we demonstrate, using an atomistic description of a 30nm diameter spin-transfer-torque magnetic random access memories (STT-MRAM), that the difference in mechanical properties of its sub-nanometer layers induces a high compressive strain in the magnetic tunnel junction (MTJ) and leads to a detrimental magnetostrictive effect. Our model explains the issues met in engineering the electrical and magnetic performances in scaled STT-MRAM devices. The resulting high compressive strain built in the stack, particularly in the MgO tunnel barrier (t-MgO), and its associated non-uniform atomic displacements, impacts on the quality of the MTJ interface and leads to strain relieve mechanisms such as surface roughness and adhesion issues. We illustrate that the strain gradient induced by the different materials and their thicknesses in the stacks has a negative impact on the tunnel magneto-resistance (TMR), on the magnetic nucleation process and on the STT-MRAM performance. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000459882300147 |
Publication Date |
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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 |
978-1-72811-987-8; 978-1-72811-987-8 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
|
Times cited |
|
Open Access |
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Notes |
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Approved |
no |
|
|
Call Number |
UA @ admin @ c:irua:158694 |
Serial |
7942 |
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Permanent link to this record |
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Author |
Janssens, K.; Alfeld, M.; Van der Snickt, G.; De Nolf, W.; Vanmeert, F.; Monico, L.; Legrand, S.; Dik, J.; Cotte, M.; Falkenberg, G.; van der Loeff, L.; Leeuwestein, M.; Hendriks, E. |
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Title |
Examination of Vincent van Gogh's paintings and pigments by means of state-of-the-art analytical methods |
Type |
H2 Book chapter |
|
Year |
2014 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
373-403
T2 - Science and art : the painted surface |
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Keywords |
H2 Book chapter; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Recent studies in which X-ray beams of macroscopic to (sub) microscopic dimensions were used for non-destructive analysis and characterization of pigments, paint micro samples and/or entire paintings by Vincent van Gogh are concisely reviewed. The overview presented encompasses the use of laboratory and synchrotron radiation-based instrumentation and deals with the use of several variants of X-ray fluorescence (XRF) as a method of elemental analysis and imaging as well as with the combined use of X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS). Microscopic and macroscopic XRF are variants of the method that are well suited to visualize the elemental distribution of key elements, mostly metals, present in paint multi layers, either on the length scale from 1–100 μm inside micro samples taken from paintings or on the 1–100 cm length scale when the (subsurface) distribution of specific pigments in entire paintings is concerned. In the context of the characterization of van Gogh's pigments subject to natural degradation, the use of methods limited to elemental analysis or imaging usually is not sufficient to elucidate the chemical transformations that have taken place. However, at synchrotron facilities, combinations of μ-XRF with related methods such as μ-XAS and μ-XRD have proven themselves to be very suitable for such studies. Their use is often combined with microscopic Fourier transform infra-red (μ-FTIR) spectroscopy since this method delivers complementary information at more or less the same length scale as the X-ray microprobe techniques. Also in the context of macroscopic imaging of works of art, the complementary use of X-ray based and infra-red based imaging appears very promising; some recent developments are discussed. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
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Publication Date |
2020-02-24 |
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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 |
|
ISBN |
978-1-84973-818-7 |
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 |
no |
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|
Call Number |
UA @ admin @ c:irua:190782 |
Serial |
7943 |
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Permanent link to this record |
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Author |
Kulkarni, S.; Gonzalez-Quiroga, A.; Nuñez, M.; Schuerewegen, C.; Perreault, P.; Goel, C.; Heynderickx, G.J.; Van Geem, K.M.; Marin, G.B. |
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Title |
An experimental and numerical study of the suppression of jets, counterflow, and backflow in vortex units |
Type |
A1 Journal article |
|
Year |
2019 |
Publication |
AIChE journal |
Abbreviated Journal |
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Volume |
65 |
Issue |
8 |
Pages |
e16614-13 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Vortex units are commonly considered for various single and multiphase applications due to their process intensification capabilities. The transition from gas‐only flow to gas–solid flow remains largely unexplored nonetheless. During this transition, primary flow phenomenon, jets, and secondary flow phenomena, counterflow and backflow, are substantially reduced, before a rotating solids bed is established. This transitional flow regime is referred to as the vortex suppression regime. In the present work, this flow transition is identified and validated through experimental and computational studies in two vortex units with a scale differing by a factor of 2, using spherical aluminum and alumina particles. This experimental data supports the proposed theoretical particle monolayer solids loading that allows estimation of vortex suppression regime solids capacity for any vortex unit. It is shown that the vortex suppression regime is established at a solids loading theoretically corresponding to a monolayer being formed in the unit for 1g‐Geldart D‐ and 1g‐Geldart B‐type particles. The model closely agrees with experimental vortex suppression range for both aluminum and alumina particles. The model, as well as the experimental data, shows that the flow suppression regime depends on unit dimensions, particle diameter, and particle density but is independent of gas flow rate. This combined study, based on experimental and computational data and on a theoretical model, reveals the vortex suppression to be one of the basic operational parameters to study flow in a vortex unit and that a simple monolayer model allows to estimate the needed solids loading for any vortex device to induce this flow transition. |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Language |
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Wos |
000474620800026 |
Publication Date |
2019-04-19 |
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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 |
0001-1541 |
ISBN |
|
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 |
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Approved |
no |
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|
Call Number |
UA @ admin @ c:irua:162121 |
Serial |
7945 |
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Permanent link to this record |
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Author |
Perreault, P.; Robert, E.; Patience, G.S. |
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Title |
Experimental methods in chemical engineering : mass spectrometry – MS |
Type |
A1 Journal article |
|
Year |
2019 |
Publication |
The Canadian journal of chemical engineering |
Abbreviated Journal |
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Volume |
97 |
Issue |
5 |
Pages |
1036-1042 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Mass spectrometry identifies the atomic mass of molecules and fragments in the gas phase. The spectrometer ionizes the molecules that then pass through an electric or magnetic field towards a detector. The field modifies the molecule's trajectory and we infer mass from its direction and velocity in a static field or from the stability of its path in a dynamic field. The electric current is amplified and a mass spectrum is generated from the location or timing of the signal from the detector, translated into a plot of the intensity as a function of the mass‐over‐charge ratio. It is field deployable, measures concentrations in real time with a temporal resolution better than 100 ms, and detection limits of fg. However, the signal drifts with time so we have to calibrate it as frequently as every hour. Calibrating requires multiple mixtures with varying concentrations to map the non‐linear response. The Web of Science Core Collection indexed over 60 000 articles that refer to MS (2016 and 2017) with applications ranging from permanent gas analysis, to identifying protein, forensic science, and natural products. The bibliometric software VOSViewer(2010) identified four clusters of research related to MS: (1) proteomics, proteins, plasma, and metabolomics; (2) solid phase extraction together with gas chromatography; (3) tandem mass spectrometry and liquid chromatography; and (4) waste water and toxicity. We expect that the technique will continue to evolve with increased sensitivity, lower drift, and greater specificity. Miniaturization efforts should also continue in order to develop faster field deployable instruments. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000468025000001 |
Publication Date |
2019-01-29 |
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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 |
0008-4034; 1939-019x |
ISBN |
|
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 |
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Approved |
no |
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|
Call Number |
UA @ admin @ c:irua:162123 |
Serial |
7947 |
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Permanent link to this record |
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Author |
Ngo, N.; Liu, X.; Van Winckel, T.; Massoudieh, A.; Kjellerup, B.V.; Takács, I.; Wett, B.; Mancell-Egala, M.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S.; De Clippeleir, H. |
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Title |
Experimental metrics to predict the flocculent settling coefficient in a 1D settler model |
Type |
P3 Proceeding |
|
Year |
2017 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
5 p.
T2 - WEFTEC.17, 30 September 4 October 2017, |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
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Publication Date |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Open Access |
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no |
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Call Number |
UA @ admin @ c:irua:151111 |
Serial |
7948 |
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Permanent link to this record |
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Author |
Ro, C.-U.; Kim, H.K.; Van Grieken, R. |
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Title |
An expert system for chemical speciation of individual particles using low-Z particle electron probe X-ray microanalysis data |
Type |
A1 Journal article |
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Year |
2004 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
76 |
Issue |
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Pages |
1322-1327 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000189275100020 |
Publication Date |
2004-02-27 |
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Series Issue |
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Edition |
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ISSN |
0003-2700; 5206-882x |
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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Open Access |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:43879 |
Serial |
7949 |
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Permanent link to this record |
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Author |
Sui, Y.; Vlaeminck, S.E. |
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Title |
Exploring Dunaliella salina as single cell protein (SCP) : the influence of light/dark regime on the growth and protein synthesis |
Type |
A2 Journal article |
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Year |
2017 |
Publication |
Communications in agricultural and applied biological sciences |
Abbreviated Journal |
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Volume |
82 |
Issue |
1 |
Pages |
6-11 |
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Keywords |
A2 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Single cell protein (SCP), or originally named microbial protein, is the edible microbial biomass derived from e.g. microalgae, bacteria and fungi, which can be used as protein sources replacing conventional protein sources for animal feed or human food such as fishmeal and soybean (Anupama & Ravindra 2000). SCP presents great potential as protein supplement to alleviate the problem of food scarcity in the future (Nasseri et al. 2011). In general, microalgae as SCP contains above 50% protein over dry weight and specifically for the marine microalgae Dunaliella salina the amount stays around 57% (Becker 2007). Commercially the most common system for Dunaliella sp. production is the outdoor open pond, thus the microalgal cells are subjected to a natural light/dark cycle (Hosseini Tafreshi & Shariati 2009). Being photo-autotrophic microorganisms, the lack of light energy sources is a risk leading to night biomass loss (Ogbonna & Tanaka 1996). On the other hand, for some microalgae species cell division occurs primarily during the night suggesting its night protein synthesis (Cuhel et al. 1984). As a consequence, day and night metabolisms of microalgae introduced by light/dark cycles potentially will have big impacts on the biomass development, both in growth and biochemical composition. In this study, the effect of the light/dark cycle on the growth and protein synthesis of Dunaliella salina was explored in comparison with continuous light cultivation. |
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ISSN |
1379-1176 |
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 |
no |
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Call Number |
UA @ admin @ c:irua:151148 |
Serial |
7950 |
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Permanent link to this record |
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Author |
Santer, R.; Schadkowski, C.; Blanchet, A.; Saison, J.-Y.; Poinsot, C.; Ramon, D.; Roekens, E.; Verlinden, L.; Van Grieken, R.; Stranger, M.; Mees, J. |
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Title |
Expositions des populations vivant au cœur de l'Euro-région auz polluants atmosphériques: le cas des poussières fines = Blootstelling van de bevolkingsgroepen wonend in het hart van de Euregio aan polluerende atmosferische deeltjes: het geval van de fijne stofdeeltjes |
Type |
Minutes and reports |
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Year |
2005 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
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Keywords |
Minutes and reports; 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 |
no |
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Call Number |
UA @ admin @ c:irua:56167 |
Serial |
7952 |
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Permanent link to this record |
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Author |
Berghmans, P.; Bleux, N.; Int Panis, L.; Mishra, V.K.; Torfs, R.; Van Poppel, M. |
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Title |
Exposure assessment of a cyclist to PM10 and ultrafine particles |
Type |
A1 Journal article |
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Year |
2009 |
Publication |
The science of the total environment |
Abbreviated Journal |
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Volume |
407 |
Issue |
4 |
Pages |
1286-1298 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Estimating personal exposure to air pollution is a crucial component in identifying high-risk populations and situations. It will enable policy makers to determine efficient control strategies. Cycling is again becoming a favorite mode of transport both in developing and in developed countries due to increasing traffic congestion and environmental concerns. in Europe, it is also seen as a healthy sports activity. However, due to high levels of hazardous pollutants in the present day road microenvironment the cyclist might be at a higher health risk due to higher breathing rate and proximity to the vehicular exhaust. In this paper we present estimates of the exposure of a cyclist to particles of various size fractions including ultrafine particles (UFP) in the town of Mol (Flanders, Belgium). The results indicate relatively higher UFP concentration exposure during morning office hours and moderate UFP levels during afternoon. The major sources of UFP and PM(10) were identified, which are vehicular emission and construction activities, respectively. We also present a dust mapping technique which can be a useful tool for town planners and local policy makers. (C) 2008 Elsevier B.V. All rights reserved. |
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Wos |
000262573200005 |
Publication Date |
2008-12-03 |
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Series Issue |
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Edition |
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ISSN |
0048-9697; 1879-1026 |
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 |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:94563 |
Serial |
7953 |
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Permanent link to this record |
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Author |
De Schepper, V.C.J.; Holvoet, K.M.A.; Benedetti, L.; Seuntjens, P.; Vanrolleghem, P.A. |
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Title |
Extension of the river water quality model no. 1 with the fate of pesticides |
Type |
A1 Journal article |
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Year |
2012 |
Publication |
Journal of hydroinformatics |
Abbreviated Journal |
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Volume |
14 |
Issue |
1 |
Pages |
48-64 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The existing River Water Quality Model No. 1 (RWQM1) was extended with processes determining the fate of non-volatile pesticides in the water phase and sediments. The exchange of pesticides between the water column and the sediment is described by three transport processes: diffusion, sedimentation and resuspension. Burial of sediments is also included. The modified model was used to simulate the concentrations of diuron and chloridazon in the river Nil. A good agreement was found between the simulated pesticide concentrations and measured values resulting from a four-month intensive monitoring campaign. The simulation results indicate that pesticide concentrations in the bulk water are not sensitive to the selected biochemical model parameters. it seems that these concentrations are mainly determined by the imposed upstream concentrations, run-off and direct losses. The high concentrations in the bulk water were not observed in the sediment pore water due to a limited exchange between the water column and the sediment. According to a sensitivity analysis, the observed pesticide concentrations are highly sensitive to the diffusion and sorption coefficients. Therefore, model users should determine these parameters with accuracy in order to reduce the degree of uncertainty in their results. |
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Wos |
000298618300004 |
Publication Date |
2011-10-25 |
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Edition |
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ISSN |
1464-7141 |
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 |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:96257 |
Serial |
7954 |
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Permanent link to this record |