Records |
Author |
Peeters, B.; Safdar, S.; Carlier, B.; Spasic, D.; Daems, D.; Lammertyn, J. |
Title |
PCR amplified DNAzyme-amplicons for generic solid-phase antimicrobial resistance screening |
Type |
P1 Proceeding |
Year |
2019 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
971-974
T2 - Transducers 2019 : Eurosensors XXXIII |
Keywords |
P1 Proceeding; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Fiber optic surface plasmon resonance (FO-SPR) has shown its potential for the detection of nucleic acids and more recently the technology has been combined with catalytic active strands such as DNAzymes. In this work, an innovative, generic solid-phase DNA sensor concept is presented, based on FO-SPR and PCR amplified DNAzyme activity. Improved levels of specificity and sensitivity were obtained down to picomolar concentrations. Moreover, the FO-SPR sensor concept enables AuNP amplified DNA target detection, independent of the target sequence length. The FO-SPR sensor was demonstrated for the screening of the mobile colistin resistance (MCR-2) gene, a gene important for the antimicrobial resistance in Gram-negative species such as E. Coli. |
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000539487000245 |
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UA library record; WoS full record |
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no |
Call Number |
UA @ admin @ c:irua:166108 |
Serial |
8367 |
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Author |
Rojas, C.M.; Goossens, D.; Van Grieken, R. |
Title |
Penetration of atmospheric aerosols during collection in cellulose filters, studied by secondary ion mass spectrometry |
Type |
A1 Journal article |
Year |
1989 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
|
Volume |
20 |
Issue |
5 |
Pages |
569-574 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
The penetration of aerosol particles in a Whatman-41 cellulose filter has been studied via the depth profiles of different elements present in the aerosol. Depth profiles were obtained by analyzing both fine and coarse fractions from a dichotomous sampler by secondary ion mass spectrometry. The fine particles had an aerodynamic diameter dae of less than 2.5 μm, whereas the coarse fraction had 2.5 ≤ dae ≤ 15 μm. Elements such as Al, Si, Ca, Ti and Fe were associated with coarse airborne particles, while S, Cl, Zn, and Br were more abundant in the fine fraction. Results showed that particle size plays an important role in the distribution of particulate matter throughout the filter. SiTi-containing particles were mostly deposited near the surface of the filter, and their profiles can be estimated using a polynomial function, whereas the profile of AlCaFe-containing particles can be approached by an exponential decay function. Elements associated with fine fraction aerosols mainly originating from combustion processes, can penetrate up to about 25% of the total filter thickness, and their profiles are better represented by a diffusion function. |
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A1989AN60500007 |
Publication Date |
2003-08-06 |
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ISSN |
0021-8502; 1879-1964 |
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UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:116822 |
Serial |
8368 |
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Author |
Robberecht, H.; Deelstra, H.; vanden Berghe, D.; Van Grieken, R. |
Title |
Percentage selenium in consumed belgian feeding |
Type |
A1 Journal article |
Year |
1982 |
Publication |
Revue des fermentations et des industries alimentaires |
Abbreviated Journal |
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Volume |
37 |
Issue |
6 |
Pages |
188-201 |
Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1982QX42300003 |
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Series Issue |
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Edition |
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ISSN |
0035-2071 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:167192 |
Serial |
8369 |
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Author |
Injuk, J.; Van Grieken, R.; Klockenkämper, R.; von Bohlen, A.; Kump, P. |
Title |
Performance and characteristics of two total-reflection X-ray fluorescence and a particle induced X-ray emission setup for aerosol analysis |
Type |
A1 Journal article |
Year |
1997 |
Publication |
Spectrochimica acta: part B : atomic spectroscopy |
Abbreviated Journal |
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Volume |
52 |
Issue |
|
Pages |
977-984 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
A1997XH53500023 |
Publication Date |
2002-07-26 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISSN |
0584-8547; 1873-3565 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:18779 |
Serial |
8370 |
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Author |
Samek, L.; Injuk, J.; van Espen, P.; Van Grieken, R. |
Title |
Performance of a new compact EDXRF spectrometer for aerosol analysis |
Type |
A1 Journal article |
Year |
2002 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
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Volume |
31 |
Issue |
|
Pages |
84-86 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
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Wos |
000173653400015 |
Publication Date |
2002-10-06 |
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Series Issue |
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Edition |
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ISSN |
0049-8246 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:36383 |
Serial |
8371 |
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Author |
Hołynska, B.; Olko, M.; Ostachowicz, B.; Ostachowicz, J.; Wegrzynek, D.; Claes, M.; Van Grieken, R.; de Bokx, P.; Kump, P.; Necemer, M. |
Title |
Performance of total reflection and grazing emission X-ray fluorescence spectrometry for the determination of trace metals in drinking water in relation to other analytical techniques |
Type |
A1 Journal article |
Year |
1998 |
Publication |
Fresenius' journal of analytical chemistry |
Abbreviated Journal |
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Volume |
362 |
Issue |
|
Pages |
294-298 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
000076461600011 |
Publication Date |
2002-08-25 |
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Series Issue |
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Edition |
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ISSN |
0937-0633; 1432-1130 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:22775 |
Serial |
8372 |
Permanent link to this record |
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Author |
Buysse, C. |
Title |
Perovskite capillaries for gas separation in sustainable energy production |
Type |
Doctoral thesis |
Year |
2011 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
201 p. |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:90548 |
Serial |
8373 |
Permanent link to this record |
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Author |
Brunekreef, B.; Janssen, N., A.H.; de Hartog, J., J.; Oldenwening, M.; Meliefste, K.; Hoek, G.; Lanki, T.; Timonen, K., L.; Vallius, M.; Pekkanen, J.; Van Grieken, R. |
Title |
Personal, indoor, and outdoor exposures to PM2.5 and its components for groups of cardiovascular patients in Amsterdam and Helsinki |
Type |
Minutes and reports |
Year |
2005 |
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 |
Minutes and reports; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Additional Links |
UA library record |
Impact Factor |
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Open Access |
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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:51816 |
Serial |
8374 |
Permanent link to this record |
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Author |
Vanderborght, B.; Van Grieken, R. |
Title |
Perspectieven voor energie-dispersieve X-stralen fluorescentie bij de wateranalyse |
Type |
A3 Journal article |
Year |
1975 |
Publication |
Hydrographica |
Abbreviated Journal |
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Volume |
1 |
Issue |
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Pages |
19-26 |
Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
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Additional Links |
UA library record |
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:116643 |
Serial |
8375 |
Permanent link to this record |
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|
|
Author |
Gielis, J. |
Title |
Phi-bonacci in Ancient Greece |
Type |
A1 Journal article |
Year |
2021 |
Publication |
Symmetry : culture and science |
Abbreviated Journal |
|
Volume |
32 |
Issue |
1 |
Pages |
25-40 |
Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Fibonacci numbers are a very popular subject in mathematics, culture and science. A major open question is why the ancient Greeks overlooked this series, while they were very familiar with the golden mean and division in extreme and mean ratio. Furthermore, they could compute the square root of five to a high degree of precision using Theon 's ladder. This fact is based on tables built with side and diagonal numbers, and it is a simple and incredibly efficient method to compute roots of integers, though it is little known even now among most of the experts. The biologist D 'Arcy Wentworth Thompson showed that the same method could be used to generate the Fibonacci series using a simple shift in the computation of the tables. He argues, quite convincingly, that the ancient Greeks could not have overlooked this. Actually, the same method can be used to generate all possible regular phyllotaxis patterns. |
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Wos |
000643822700002 |
Publication Date |
2021-03-30 |
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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 |
0865-4824 |
ISBN |
|
Additional Links |
UA library record; WoS full record |
Impact Factor |
|
Times cited |
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Open Access |
OpenAccess |
Notes |
|
Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:178322 |
Serial |
8376 |
Permanent link to this record |
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|
Author |
Vandeputte, D.F.; Jacob, W.A.; Van Grieken, R.E. |
Title |
Phosphorus, calcium and lead distribution in collagen in lead induced soft tissue calcification : an ultrastructural and X-ray microanalytical study |
Type |
A1 Journal article |
Year |
1990 |
Publication |
Matrix |
Abbreviated Journal |
|
Volume |
10 |
Issue |
1 |
Pages |
33-37 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Repeated intraperitoneal injections of lead acetate in rats caused a calcification of the skin of the abdomen near the site of the injections. In the lead-induced calcifications, electron dense collagen bundles could be observed. On the surface of the collagen fibrils, needle-like crystals were visible. With energy-dispersive X-ray analysis, phosphorus, calcium and lead were detected in the electron dense collagen bundles. X-ray maps of the P-Kα, Ca-Kα, and Pb-Lα plus Pb-Lβ lines showed an equivalent distribution along the collagen fibrils for phosphorus and calcium. The occurrence of the most electron dense areas in the STEM-image was comparable to the lead distribution. A good correlation existed between the structural and the elemental images of the same area. Although the medicinal use of preparations containing lead is no longer recommended, some are still prescribed. From our results we can conclude that they should not be applied to injured or inflamed skin. |
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Wos |
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Publication Date |
2012-04-16 |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
|
ISSN |
0934-8832 |
ISBN |
|
Additional Links |
UA library record |
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:116930 |
Serial |
8377 |
Permanent link to this record |
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Author |
Van Hal, M. |
Title |
Photo(electro)catalytic air purification and soot degradation with simultaneous energy recovery |
Type |
Doctoral thesis |
Year |
2021 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
XXXII, 203 p. |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Today’s society is increasingly challenged by a range of urgent environmental problems. Air pollution is one of these pressing topics. This thesis will mainly focus on the degradation of volatile organic compounds (VOCs) and particulate matter (PM) – more specifically soot. A second globally urging topic is the quest for sustainable energy production. To simultaneously target both environmental problems, a photoelectrochemical (PEC) cell will be studied in this thesis, combining air purification and sustainable energy production in a single device. Photocatalysis is used at the anode of the PEC cell to drive the air purification process, while the energy contained in the degraded compounds is (partially) recovered at the cathode, either as H2 gas or electricity. The first two experimental chapters focus on the proof of concept of such an unbiased all-gas phase PEC cell targeting VOC degradation, using both TiO2- and WO3-based photocatalysts. In the two following experimental chapters the photocatalytic soot oxidation capacity of these TiO2- and WO3-based photocatalysts was studied. In the final experimental chapter the previously obtained results were combined, striving towards an efficient, sunlight-driven and soot-degrading waste gas-to-energy PEC cell. |
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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 |
Call Number |
UA @ admin @ c:irua:184521 |
Serial |
8378 |
Permanent link to this record |
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Author |
Dubinina, T.; Maklakov, S.; Petrusevich, E.; Borisova, N.E.; Trashin, S.A.; De Wael, K.; Tomilova, L.G. |
Title |
Photoactive layers for photovoltaics based on near-infrared absorbing aryl-substituted naphthalocyanine complexes : preparation and investigation of properties |
Type |
A1 Journal article |
Year |
2021 |
Publication |
New Journal Of Chemistry |
Abbreviated Journal |
New J Chem |
Volume |
45 |
Issue |
32 |
Pages |
14815-14821 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Photoactive layers based on aryl- and aryloxy-substituted naphthalocyanines and conductive polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) were prepared using the spin-coating technique and their conductivity was tested in dark and under illumination. For this purpose novel octa-2-naphthoxy-substituted naphthalocyanines were synthesized starting from 6,7-di(2-naphthoxy)naphthalene-2,3-dicarbonitrile. For those novel naphthalocyanine complexes, spectral and electrochemical data were measured and compared with corresponding ones for other aryl-substituted analogues. In comparison to the previously studied naphthalocyanines with alkyl- and phenyl- groups, the formal oxidation and reduction potentials were rather similar. All target complexes demonstrate intense near-infrared absorption at 760-790 nm, which is about 30 nm bathochromically shifted in thin films. The photo-resistive effect was found increasing from composites comprised of naphthoxy- to phenyl-substituted naphthalocyanines. This peculiarity was explained by using optical and atomic force microscopy in terms of different sizes of aggregates formed. The photo-response time for novel composited was approximately 3 s, which is about 20 times faster than measured previously for the films deposited via the drop-casting technique. |
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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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Wos |
000680389800001 |
Publication Date |
2021-07-23 |
Series Editor |
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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 |
1144-0546 |
ISBN |
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Additional Links |
UA library record; WoS full record |
Impact Factor |
3.269 |
Times cited |
|
Open Access |
OpenAccess |
Notes |
|
Approved |
Most recent IF: 3.269 |
Call Number |
UA @ admin @ c:irua:179884 |
Serial |
8379 |
Permanent link to this record |
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Author |
Smits, M. |
Title |
Photocatalytic degradation of diesel soot : from application to reaction mechanism |
Type |
Doctoral thesis |
Year |
2013 |
Publication |
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Abbreviated Journal |
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Volume |
|
Issue |
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Pages |
160 p. |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
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Corporate Author |
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Abbreviated Series Title |
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Edition |
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ISSN |
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ISBN |
978-90-5728-415-1 |
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 |
no |
Call Number |
UA @ admin @ c:irua:108803 |
Serial |
8380 |
Permanent link to this record |
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Author |
Muys, M.; Coppens, J.; Boon, N.; Vlaeminck, S.E. |
Title |
Photosynthetic oxygenation for urine nitrification |
Type |
A1 Journal article |
Year |
2018 |
Publication |
Water science and technology |
Abbreviated Journal |
|
Volume |
78 |
Issue |
1 |
Pages |
183-194 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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 |
000445517100020 |
Publication Date |
2018-05-09 |
Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
|
ISSN |
0273-1223; 1996-9732 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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:152908 |
Serial |
8381 |
Permanent link to this record |
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Author |
Perrault, G.; Dufresne, A.; Strati, G.; McNeil, M.; Michaud, D.; Baril, M.; Bégin, R.; Labbé, J.; Larivière, P.; Eeckhaoudt, S.; Van Grieken, R. |
Title |
Physico-chemical fate of chromium compounds in the lung sheep model |
Type |
A1 Journal article |
Year |
1995 |
Publication |
Journal of toxicology and environmental health |
Abbreviated Journal |
|
Volume |
44 |
Issue |
|
Pages |
247-262 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
|
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 |
A1995QK64200008 |
Publication Date |
2009-10-21 |
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Edition |
|
ISSN |
0098-4108 |
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UA library record; WoS full record; WoS citing articles |
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Open Access |
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no |
Call Number |
UA @ admin @ c:irua:12344 |
Serial |
8382 |
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Author |
Van Tendeloo, M.; Bundervoet, B.; Carlier, N.; Van Beeck, W.; Mollen, H.; Lebeer, S.; Colsen, J.; Vlaeminck, S.E. |
Title |
Piloting carbon-lean nitrogen removal for energy-autonomous sewage treatment |
Type |
A1 Journal article |
Year |
2021 |
Publication |
Environmental Science-Water Research & Technology |
Abbreviated Journal |
Environ Sci-Wat Res |
Volume |
7 |
Issue |
12 |
Pages |
2268-2281 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Energy-autonomous sewage treatment can be achieved if nitrogen (N) removal does not rely on organic carbon (∼chemical oxygen demand, COD), so that a maximum of the COD can be redirected to energy recovery. Shortcut N removal technologies such as partial nitritation/anammox and nitritation/denitritation are therefore essential, enabling carbon- and energy-lean nitrogen removal. In this study, a novel three-reactor pilot design was tested and consisted of a denitrification, an intermittent aeration, and an anammox tank. A vibrating sieve was added for differential sludge retention time (SRT) control. The 13 m3 pilot was operated on pre-treated sewage (A-stage effluent) at 12–24 °C. Selective suppression of unwanted nitrite-oxidizing bacteria over aerobic ammonium-oxidizing bacteria was achieved with strict floccular SRT management combined with innovative aeration control, resulting in a minimal nitrate production ratio of 17 ± 10%. Additionally, anoxic ammonium-oxidizing bacteria (AnAOB) activity could be maintained in the reactor for at least 150 days because of long granular SRT management and the anammox tank. Consequently, the COD/N removal ratio of 2.3 ± 0.7 demonstrated shortcut N removal almost three times lower than the currently applied nitrification/denitrification technology. The effluent total N concentrations of 17 ± 3 mg TN per L (at 21 ± 1 °C) and 17 ± 6 mg TN per L (at 15 ± 1 °C) were however too high for application at the sewage treatment plant Nieuwveer (Breda, The Netherlands). Corresponding N removal efficiencies were 52 ± 12% and 37 ± 21%, respectively. Further development should focus on redirecting more nitrite to AnAOB in the B-stage, exploring effluent-polishing options, or cycling nitrate for increased A-stage denitrification. |
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000714159900001 |
Publication Date |
2021-10-29 |
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Series Issue |
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Edition |
|
ISSN |
2053-1400 |
ISBN |
|
Additional Links |
UA library record; WoS full record |
Impact Factor |
2.817 |
Times cited |
|
Open Access |
OpenAccess |
Notes |
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Approved |
Most recent IF: 2.817 |
Call Number |
UA @ admin @ c:irua:183347 |
Serial |
8383 |
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Author |
Liu, X.; Van Winckel, T.; Kjellerup, B.V.; Takacs, I.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S.; De Clippeleir, H. |
Title |
Pinpointing bioflocculation limitations for enhanced carbon management in high-rate activated sludge |
Type |
P3 Proceeding |
Year |
2017 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
|
Pages |
6 p.
T2 - WEF Nutrient Symposium 2017, 12 - 14 Jun |
Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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no |
Call Number |
UA @ admin @ c:irua:151118 |
Serial |
8384 |
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|
|
Author |
Seuntjens, D.; Han, M.; Kerckhof, F.-M.; Boon, N.; Al-Omari, A.; Takacs, I.; Meerburg, F.; De Mulder, C.; Wett, B.; Bott, C.; Murthy, S.; Carvajal Arroyo, J.M.; De Clippeleir, H.; Vlaeminck, S.E. |
Title |
Pinpointing wastewater and process parameters controlling the AOB to NOB activity ratio in sewage treatment plants |
Type |
A1 Journal article |
Year |
2018 |
Publication |
Water research |
Abbreviated Journal |
|
Volume |
138 |
Issue |
|
Pages |
37-46 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Even though nitrification/denitrification is a robust technology to remove nitrogen from sewage, economic incentives drive its future replacement by shortcut nitrogen removal processes. The latter necessitates high potential activity ratios of ammonia oxidizing to nitrite oxidizing bacteria (rAOB/rNOB). The goal of this study was to identify which wastewater and process parameters can govern this in reality. Two sewage treatment plants (STP) were chosen based on their inverse rAOB/rNOB values (at 20 °C): 0.6 for Blue Plains (BP, Washington DC, US) and 1.6 for Nieuwveer (NV, Breda, NL). Disproportional and dissimilar relationships between AOB or NOB relative abundances and respective activities pointed towards differences in community and growth/activity limiting parameters. The AOB communities showed to be particularly different. Temperature had no discriminatory effect on the nitrifiers' activities, with similar Arrhenius temperature dependences (ΘAOB = 1.10, ΘNOB = 1.061.07). To uncouple the temperature effect from potential limitations like inorganic carbon, phosphorus and nitrogen, an add-on mechanistic methodology based on kinetic modelling was developed. Results suggest that BP's AOB activity was limited by the concentration of inorganic carbon (not by residual N and P), while NOB experienced less limitation from this. For NV, the sludge-specific nitrogen loading rate seemed to be the most prevalent factor limiting AOB and NOB activities. Altogether, this study shows that bottom-up mechanistic modelling can identify parameters that influence the nitrification performance. Increasing inorganic carbon in BP could invert its rAOB/rNOB value, facilitating its transition to shortcut nitrogen removal. |
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000431747300005 |
Publication Date |
2017-11-24 |
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ISSN |
0043-1354; 1879-2448 |
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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 |
no |
Call Number |
UA @ admin @ c:irua:149976 |
Serial |
8385 |
Permanent link to this record |
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|
Author |
Maenhaut, W.; Selen, A.; van Espen, P.; Van Grieken, R.; Winchester, W.J. |
Title |
Pixe analysis of aerosol samples collected over the atlantic-ocean from a sailboat |
Type |
A1 Journal article |
Year |
1981 |
Publication |
Nuclear instruments and methods |
Abbreviated Journal |
|
Volume |
181 |
Issue |
1-3 |
Pages |
399-405 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
Abstract |
Size-fractionated aerosol samples, collected over the Atlantic Ocean, were analyzed for up to 20 elements by PIXE. Using a sailboat as sampling platform, duplicate samples were taken for two-day periods by means of battery operated 6-stage cascade impactors, positioned about 8 m above the sea surface. In the PIXE analysis of the fine particle stages (stages 3 to 5) a 5 times smaller beam size was used than for stages 1 and 2. This led to significant improvement in the detection limits for the former stages. The results from the duplicate impactor samples were normally in good agreement, indicating that the combined uncertainty of sampling and PIXE analysis was of the order of 20%. The precision of the PIXE analysis alone was investigated by rebombarding some samples six months after the first analysis. The trends with time of the fine particle sulfur and the coarse particle iron concentrations are discussed in some detail. |
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A1981LH81100073 |
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2002-11-11 |
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ISSN |
0029-554x; 1878-3759 |
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UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:113628 |
Serial |
8386 |
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Author |
Belov, I. |
Title |
Plasma-assisted conversion of carbon dioxide |
Type |
Doctoral thesis |
Year |
2017 |
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 |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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no |
Call Number |
UA @ admin @ c:irua:146275 |
Serial |
8387 |
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Author |
Van Wesenbeeck, K. |
Title |
Plasma catalysis as an efficient and sustainable air purification technology |
Type |
Doctoral thesis |
Year |
2016 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
171 p. |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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|
ISBN |
978-90-5728-514-1 |
Additional Links |
UA library record |
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no |
Call Number |
UA @ admin @ c:irua:135267 |
Serial |
8388 |
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Author |
Blommaerts, N. |
Title |
Plasmonic core shell nanoparticles : from synthesis to photocatalytic applications |
Type |
Doctoral thesis |
Year |
2019 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
153 p. |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Het gebruik van plasmon-actieve nanodeeltjes heeft de laatste 10 jaar zeer veel interesse gewekt bij onderzoekers in verschillende toepassingsdomeinen zoals fotokatalyse of oppervlakte versterkte Raman spectroscopie. Er is echter een grote limiterende factor bij het gebruik van edelmetaal nanodeeltjes zoals goud en zilver en dat is de stabiliteit. Deze oxideren en aggregeren snel, zeker in oxidatieve omgeving zoals in lucht. Een interessante aanpak om plasmon-actieve nanodeeltjes te stabiliseren, is om ze te omgeven in een schil, met andere woorden om een kern-schil nanodeeltje te vormen. Er zijn een heel aantal verschillende manieren waarop kern-schil nanodeeltjes gesynthetiseerd kunnen worden. In eerste instantie werden metaal nanodeeltjes omgeven door een (dunne) TiO2 laag. Afhankelijk van de hoeveelheid TiO2 precursor kon de dikte van de laag gecontroleerd worden tot enkele nanometers dik. De stalen werden getest voor de fotokatalytische afbraak van een vaste laag stearinezuur waarbij toevoeging van 2 wt% metaal@TiO2 op P25 leidde tot een significante verbetering in afbraakefficiëntie in vergelijking met zuiver P25. Een andere manier voor het stabiliseren van metaal nanodeeltjes is door ze te omgeven met een polymeerschil. Op deze manier kon de laagdikte gecontroleerd worden met sub-nanometer controle wat een zeer belangrijke factor is voor de hoeveelheid near-field versterking dat buiten de polymeer schil kan gaan. Een XTT test werd uitgevoerd om te bepalen wat de zuurstofactivatie snelheid was van goud en zilver (en goud-zilver bimetallische) nanodeeltjes, al dan niet omgeven door een (niet-)geleidende polymeer laag. Wanneer de stalen gecoat werden met vier niet-geleidende polymeerlagen zakte de zuurstofactivatie nagenoeg tot nul. Aan de andere kant, als goud nanodeeltjes werden omgeven door een geleidende schil was er nog steeds zuurstofactivatie, hoewel lager dan in het geval van goud zonder laag. Het laatste deel van deze thesis focuste meer op mogelijke toepassingen in luchtzuivering. In dit werk werd een glazen buis, gecoat aan de binnenkant met (Ag@polymer gemodificeerd) TiO2, als een spiraal rond een UVA lamp gewikkeld. De geoptimaliseerde spiraalreactor werd dan vergeleken met een conventionele cilindervormige fotoreactor, met dezelfde dimensies en totale katalysatorbelading, over een grote range aan experimentele condities. Uit de resultaten bleek dat de spiraalreactor significant betere afbraakefficiënties vertoonde in vergelijking met de conventionele cilindervormige reactor over een grote range aan debieten. Een adsorptiestap in combinatie met de geoptimaliseerde spiraalreactor zou kunnen leiden tot een zeer krachtige luchtzuiveringstechnologie. |
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no |
Call Number |
UA @ admin @ c:irua:164835 |
Serial |
8389 |
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Author |
Bencs, L.; Ravindra, K.; Van Grieken, R. |
Title |
Platinum : environmental pollution and health effects |
Type |
H2 Book chapter |
Year |
2011 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
580-595
T2 - Encyclopedia of environmental health |
Keywords |
H2 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISBN |
978-0-444-52273-3 |
Additional Links |
UA library record |
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no |
Call Number |
UA @ admin @ c:irua:93109 |
Serial |
8390 |
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Author |
Ravindra, K.; Bencs, L.; Van Grieken, R. |
Title |
Platinum group elements in the environment and their health risk |
Type |
A1 Journal article |
Year |
2004 |
Publication |
The science of the total environment |
Abbreviated Journal |
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Volume |
318 |
Issue |
|
Pages |
1-43 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000220194000001 |
Publication Date |
2003-09-12 |
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ISSN |
0048-9697; 1879-1026 |
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UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:43525 |
Serial |
8391 |
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Author |
Čevik, U.; Akbulut, S.; Makarovska, Y.; Van Grieken, R. |
Title |
Polarized-beam high-energy EDXRF in geological samples |
Type |
A1 Journal article |
Year |
2013 |
Publication |
Spectroscopy letters |
Abbreviated Journal |
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Volume |
46 |
Issue |
1 |
Pages |
36-46 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Certified reference materials (NIST 1645, BCR 143, IAEA 7, BCR 141, NIESCRM02, and IAEA 375) were used for determining the performance of a secondary target energy-dispersive X-ray fluorescence (EDXRF) spectrometer, Epsilon 5 (PANalytical, Almelo, the Netherlands). For the evaluation of the EDXRF spectra with polarized-beam high-energy excitation, the WinAxil software package has been applied. The results showed that Epsilon 5, EDXRF spectrometry is favorable for the determination of elemental concentrations in geological samples, but the sample preparation has the largest influence on the precision. However, they presented good agreement with certified values for most of the elements. |
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000314018900005 |
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2013-01-03 |
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ISSN |
0038-7010 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:106754 |
Serial |
8392 |
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Author |
Van de Walle, E.; Van Nieuwenhove, I.; Vanderleyden, E.; Declercq, H.; Gellynck, K.; Schaubroeck, D.; Ottevaere, H.; Thienpont, H.; De Vos, W.H.; Cornelissen, M.; Van Vlierberghe, S.; Dubruel, P. |
Title |
Polydopamine-gelatin as universal cell-interactive coating for methacrylate-based medical device packaging materials : when surface chemistry overrules substrate bulk properties |
Type |
A1 Journal article |
Year |
2016 |
Publication |
Biomacromolecules |
Abbreviated Journal |
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Volume |
17 |
Issue |
1 |
Pages |
56-68 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Despite its widespread application in the fields of ophthalmology, orthopedics and dentistry and the stringent need for polymer packagings that induce in vivo tissue integration, the full potential of poly(methyl methacrylate) (PMMA) and its derivatives as medical device packaging material has not been explored yet. We therefore elaborated on the development of a universal coating for methacrylate-based materials which ideally should reveal cell-interactivity irrespective of the polymer substrate bulk properties. Within this perspective, the present work reports on the UV-induced synthesis of PMMA and its more flexible poly(ethyleneglycol) (PEG)-based derivative (PMMAPEG) and its subsequent surface decoration using polydopamine (PDA) as well as PDA combined with gelatin B (Gel B). Successful application of both layers was confirmed by multiple surface characterization techniques. The cell interactivity of the materials was studied by performing live-dead assays and immunostainings of the cytoskeletal components of fibroblasts. It can be concluded that only the combination of PDA and Gel B yields materials posessing similar cell interactivities, irrespective of the physicochemical properties of the underlying substrate. The proposed coating outperforms both the PDA functionalized and the pristine polymer surfaces. A universal cell-interactive coating for methacrylate-based medical device packaging materials has thus been realized. |
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000368047800007 |
Publication Date |
2015-11-15 |
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Edition |
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ISSN |
1525-7797 |
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|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:129159 |
Serial |
8393 |
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Author |
Cabal Rodríguez, A.E.; Leyva Pernia, D.; Schalm, O.; van Espen, P.J.M. |
Title |
Possibilities of energy-resolved X-ray radiography for the investigation of paintings |
Type |
A1 Journal article |
Year |
2012 |
Publication |
Analytical and bioanalytical chemistry |
Abbreviated Journal |
|
Volume |
402 |
Issue |
4 |
Pages |
1471-1480 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
X-ray radiographic images of paintings often show little or no contrast. In order to increase the contrast in radiographic images we measured the X-ray spectrum of a low power X-ray tube, after passing through the painting, with a high energy-resolution SDD detector. To obtain images, the detector is collimated with a 400 mu m diameter pinhole and the painting was moved through the beam in the x and y-direction using a dwell time of a few seconds per pixel. The data obtained consists of a data cube of, typically, 200 x 200 pixels and a 512-channel X-ray spectrum for each pixel, spanning the energy range from 0 to 40 keV. Having the absorbance spectrum available for each pixel, we are able, a posteriori, to produce images by edge subtraction for any given element. In this way high contrast, element-specific, images can be obtained. Because of the high energy-resolution a much simpler edge subtraction algorithm can be applied. We also used principal-component imaging to obtain, in a more automated way, images with high contrast. Some of these images can easily be attributed to specific elements. It turns out that preprocessing of the spectral data is crucial for the success of the multivariate image processing. |
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000299842000008 |
Publication Date |
2011-07-14 |
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Edition |
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ISSN |
1618-2642; 1618-2650 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:96200 |
Serial |
8394 |
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Author |
Fougerolle, Y.; Truchetet, F.; Gielis, J. |
Title |
Potential fields of self intersecting Gielis curves for modeling and generalized blending techniques |
Type |
P1 Proceeding |
Year |
2017 |
Publication |
Modeling In Mathematics |
Abbreviated Journal |
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Volume |
2 |
Issue |
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Pages |
67-81
T2 - |
Keywords |
P1 Proceeding; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
The definition of Gielis curves allows for the representation of self intersecting curves. The analysis and the understanding of these representations is of major interest for the analytical representation of sectors bounded by multiple subsets of curves (or surfaces), as this occurs for instance in many natural objects. We present a construction scheme based on R-functions to build signed potential fields with guaranteed differential properties, such that their zero-set corresponds to the outer, the inner envelop, or combined subparts of the curve. Our framework is designed to allow for the definition of composed domains built upon Boolean operations between several distinct objects or some subpart of self-intersecting curves, but also provides a representation for soft blending techniques in which the traditional Boolean union and intersection become special cases of linear combinations between the objects' potential fields. Finally, by establishing a connection between R-functions and Lame curves, we can extend the domain of the p parameter within the R-p-function from the set of the even positive numbers to the real numbers strictly greater than 1, i.e. p is an element of]1, +infinity[. |
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 |
000442076400006 |
Publication Date |
2017-04-20 |
Series Editor |
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Series Title ![sorted by Series Title field, descending order (down)](img/sort_desc.gif) |
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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 |
978-94-6239-261-8; 978-94-6239-260-1; 978-94-6239-260-1 |
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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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:153801 |
Serial |
8395 |
Permanent link to this record |
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Author |
Daems, D.; van Nuijs, A.L.N.; Covaci, A.; Hamidi-Asl, E.; Van Camp, G.; Nagels, L.J. |
Title |
Potentiometric detection in UPLC as an easy alternative to determine cocaine in biological samples |
Type |
A1 Journal article |
Year |
2015 |
Publication |
Biomedical chromatography |
Abbreviated Journal |
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Volume |
29 |
Issue |
7 |
Pages |
1124-1129 |
Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Toxicological Centre |
Abstract |
The analytical methods which are often used for the determination of cocaine in complex biological matrices are a prescreening immunoassay and confirmation by chromatography combined with mass spectrometry. We suggest an ultra-high-pressure liquid chromatography combined with a potentiometric detector, as a fast and practical method to detect and quantify cocaine in biological samples. An adsorption/desorption model was used to investigate the usefulness of the potentiometric detector to determine cocaine in complex matrices. Detection limits of 6.3ngmL(-1) were obtained in plasma and urine, which is below the maximum residue limit (MRL) of 25ngmL(-1). A set of seven plasma samples and 10 urine samples were classified identically by both methods as exceeding the MRL or being inferior to it. The results obtained with the UPLC/potentiometric detection method were compared with the results obtained with the UPLC/MS method for samples spiked with varying cocaine concentrations. The intraclass correlation coefficient was 0.997 for serum (n =7) and 0.977 for urine (n =8). As liquid chromatography is an established technique, and as potentiometry is very simple and cost-effective in terms of equipment, we believe that this method is potentially easy, inexpensive, fast and reliable. Copyright (c) 2014 John Wiley & Sons, Ltd. |
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Corporate Author |
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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 |
000356694000020 |
Publication Date |
2014-12-16 |
Series Editor |
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Series Title ![sorted by Series Title field, descending order (down)](img/sort_desc.gif) |
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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 |
0269-3879 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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:127069 |
Serial |
8396 |
Permanent link to this record |