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Author |
Zhang, L. |
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Title  |
Characteristic diagnosis of atmospheric discharge plasma and kinetics study of reactive species |
Type |
Doctoral thesis |
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Year |
2021 |
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Abbreviated Journal |
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Volume |
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Pages |
XVIII, 148 p. |
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Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
Low-temperature plasma has received extensive attention due to its promising application prospects in the field of air pollutants degradation and energy conversion. To fulfill the need for particular applications, constructing stable plasma sources and investigating the interaction mechanisms between plasma and substances have been hot research topics. This thesis reports the diagnosis and improvement of plasma sources, diagnosis of the active species in plasma and a modeling study of chemical kinetics processes. The main research contents are as follows: In Chapter 3, a diffuse sine AC dielectric barrier discharge (DBD) is successfully obtained by optimizing the electrode structure. It is found that using double-layer dielectric plates can limit the discharge current intensity and significantly improve the discharge uniformity. The electrical characteristics and gas temperature with different operating time show that the discharge stability is also improved by using double-layer dielectric plates. In Chapter 4, nanosecond pulses are employed to generate diffuse DBD plasmas. Three main discharge stages are distinguished by ICCD images, i.e., the streamer breakdown from the needle tip to the plate electrode, the regime transition from streamer to diffuse plasma, and the propagation of surface discharge on the plate electrode surface. The chapter reveales that in nanosecond pulsed discharges the vibrational temperature of N2 increases with the discharge duration, while the rotational temperature mainly stays constant, which means electron energy is transferred into the vibrational levels, but gas heating is not obvious during the discharge pulse. In Chapter 5, both sine AC DBD and nanosecond pulsed DBD, studied in Chapter 2 and 3, are used for formaldehyde degradation. It is found that nanosecond pulsed DBD has more homogenous characteristics, better stability, and lower plasma gas temperature. Moreover, the energy consumption of nanosecond pulsed DBD is much lower than that of AC DBD. In Chapter 6, a 0D chemical kinetics model is developed to investigate the underlying plasma chemistry of methane dry reforming in a nanosecond pulsed discharge. An overview of the dominant reaction pathways of CO2 and CH4 conversion into the major products is given. Furthermore, most of the CO2 molecules are populated into vibrational states during the pulse. Hence, the vibrational states of CO2 play an important role in its dissociation process. In general, this PhD thesis contributes to a better insight in the mechanisms of sinusoidal AC DBD and nanosecond pulsed DBD plasmas and their applications, i.e., decomposition of formaldehyde and dry reforming of methane. |
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Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:183166 |
Serial |
7605 |
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Author |
Komendová, L. |
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Title |
Characteristic length scales and vortex interactions in two-component superconducting systems |
Type |
Doctoral thesis |
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Year |
2013 |
Publication |
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Abbreviated Journal |
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Doctoral thesis; Condensed Matter Theory (CMT) |
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Place of Publication |
Antwerpen |
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Publication Date |
0000-00-00 |
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UA library record |
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Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:112085 |
Serial |
312 |
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Author |
Yasuda, K.; Hisatsune, K.; Udoh, K.; Tanaka, Y.; Van Tendeloo, G.; van Landuyt, J. |
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Title |
Characteristic mosaic texture related to orderingin AuCu-9at.%Ag pseudobinary alloy |
Type |
A3 Journal article |
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Year |
1992 |
Publication |
Dentistry in Japan |
Abbreviated Journal |
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Volume |
29 |
Issue |
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Pages |
91-102 |
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Keywords |
A3 Journal article; Electron microscopy for materials research (EMAT) |
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Place of Publication |
Tokyo |
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Publication Date |
0000-00-00 |
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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 |
0070-3737 |
ISBN |
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UA library record |
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PHYSICS, APPLIED 28/145 Q1 # |
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Call Number |
UA @ lucian @ c:irua:4105 |
Serial |
313 |
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Author |
Bencs, L.; Szakács, O.; Szoboszlai, N.; Ajtony, Z.; Bozsai, G. |
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Title |
Characteristics of atomic absorption calibration curves with the transversely heated graphite furnace |
Type |
A1 Journal article |
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Year |
2003 |
Publication |
Journal of analytical atomic spectrometry |
Abbreviated Journal |
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Volume |
18 |
Issue |
2 |
Pages |
105-110 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Calibration curves with two quasi-linear sections ("double sloping'') were observed for the medium volatile elements, Cr and Cu, with the use of a SIMAA 6000 graphite furnace atomic absorption spectrometer under interrupted internal gas flow conditions. If a standard transversally heated graphite atomizer (THGA) tube was shortened by 0.5 mm at both of its ends, (i.e. the gaps were enlarged between graphite furnace housing and tube ends), a stronger declination of the calibration curves resulted. Elements with fairly high diffusion coefficients (>5.8 cm(2) s(-1)) and with short appearance time of their transients (<0.6 s), such as Cr and Cu, have shown the most characteristic sensitivity drop towards higher concentrations. This anomalous feature could be eliminated in three different ways; (1) by applying end-capped THGA tubes, (2) using mini-flow (50 cm(3) min(-1)) conditions during the atomization stage, and (3) by adding Pd-Mg chemical modifier. For the low volatile Mo and V, the calibration curves had no irregular shape. For Ag, Co, Cr, Cu, Mn and Ni, the mini-flow settings improved the linearity of the calibration curves and extended the upper limit of the linear calibration range by a factor of 1.5-2.0. The irregular characteristic of the analytical curves was interpreted as an increased vapour loss at higher analyte concentrations through the opened ends of the standard THGA tubes. This vapour loss was associated with the significantly diverse expulsion velocities of atoms, caused by the difference in temperature and concentration gradients, when evaporating amounts of analytes with more than one order of magnitude difference. |
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Wos |
000180666600003 |
Publication Date |
2003-01-28 |
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Series Issue |
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Edition |
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ISSN |
0267-9477 |
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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:103320 |
Serial |
7606 |
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Author |
Satyawali, Y.; Van Roy, S.; Roevens, A.; Meynen, V.; Mullens, S.; Jochems, P.; Doyen, W.; Cauwenberghs, L.; Dejonghe, W. |
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Title |
Characterization and analysis of the adsorption immobilization mechanism of \beta-galactosidase on metal oxide powders |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
RSC advances |
Abbreviated Journal |
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Volume |
3 |
Issue |
46 |
Pages |
24054-24062 |
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Keywords |
A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Immobilization of the enzymes plays a vital role in enhancing their applicability in a wide range of applications, thus ensuring the use of sustainable enzymatic processes over the conventional chemical processes on an industrial scale. This study provides the background information for the selection and screening of inorganic metal oxide (MO) powders for their use as fillers in mixed matrix membranes for enzyme immobilization as the future aim. A total of 13 MOs, ranging in size from 0.01 μm to <5 μm, were tested for their performance as a support for enzyme (β-galactosidase) immobilization via adsorption. Alumina appeared to be the best performing MO with the amount and activity of the immobilized enzyme being 64 mg g−1 and up to 288 U g−1, respectively. The amount of immobilized enzyme on alumina (α-Al2O3 C and γ-Al2O3) was >3 times higher than ZrO2 (used as a reference MO in this study). Upon heat treatment at 900 °C, up to 15%, 52% and 42% decline was observed in the amount of immobilized enzyme in case of alumina metal oxides (MOs), ZrO2 and TiO2, respectively. The results suggested that both isoelectric point and surface area of the MO influence the immobilization. The most important observation in this study was that the bonding of the enzyme to the MO surface seems to be mediated by the bonding/interaction of the buffer to the enzyme. |
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Wos |
000326745100030 |
Publication Date |
2013-10-11 |
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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 |
2046-2069 |
ISBN |
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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:111300 |
Serial |
7607 |
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Author |
Jochems, P.; Satyawali, Y.; van Roy, S.; Doyen, W.; Diels, L.; Dejonghe, W. |
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Title |
Characterization and optimization of \beta-galactosidase immobilization process on a mixed-matrix membrane |
Type |
A1 Journal article |
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Year |
2011 |
Publication |
Enzyme and microbial technology |
Abbreviated Journal |
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Volume |
49 |
Issue |
6/7 |
Pages |
580-588 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
β-Galactosidase is an important enzyme catalyzing not only the hydrolysis of lactose to the monosaccharides glucose and galactose but also the transgalactosylation reaction to produce galacto-oligosaccharides (GOS). In this study, β-galactosidase was immobilized by adsorption on a mixed-matrix membrane containing zirconium dioxide. The maximum β-galactosidase adsorbed on these membranes was 1.6 g/m2, however, maximal activity was achieved at an enzyme concentration of around 0.5 g/m2. The tests conducted to investigate the optimal immobilization parameters suggested that higher immobilization can be achieved under extreme parameters (pH and temperature) but the activity was not retained at such extreme operational parameters. The investigations on immobilized enzymes indicated that no real shift occurred in its optimal temperature after immobilization though the activity in case of immobilized enzyme was better retained at lower temperature (5 °C). A shift of 0.5 unit was observed in optimal pH after immobilization (pH 6.5 to 7). Perhaps the most striking results are the kinetic parameters of the immobilized enzyme; while the Michaelis constant (Km) value increased almost eight times compared to the free enzyme, the maximum enzyme velocity (Vmax) remained almost constant. |
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Wos |
000298529600015 |
Publication Date |
2011-06-26 |
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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 |
0141-0229 |
ISBN |
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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:90060 |
Serial |
7608 |
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Author |
Klaassen, L.; van der Snickt, G.; Legrand, S.; Higgitt, C.; Spring, M.; Vanmeert, F.; Rosi, F.; Brunetti, B.G.; Postec, M.; Janssens, K. |
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Title |
Characterization and removal of a disfiguring oxalate crust on a large altarpiece by Hans Memling |
Type |
H1 Book chapter |
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Year |
2019 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
263-282
T2 - Metal soaps in art / Casadio, F. [edi |
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Keywords |
H1 Book chapter; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
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Abstract |
During the conservation treatment of Memling’s Christ with Singing and Music-making Angels, three panel paintings that are among the most monumental works in early Netherlandish art, the conservators came across insoluble surface layers containing calcium oxalates. A very thin and irregular layer of this type, hardly visible to the naked eye, was spread across the surface of all three panels. A much thicker layer forming an opaque and highly disfiguring crust that obscured the composition (Figs. 15.1 and 15.7) was locally present on areas of dark copper-containing paint, where multiple layers of old discolored coatings and accretions remained in place before the most recent cleaning. This article describes the application of a wide range of analytical techniques in order to fully understand the stratigraphy and composition of the crusts on the Memling paintings. FTIR spectroscopy in transmission and reflection mode, micro-ATR-FTIR imaging and macro-rFTIR scanning, SEM-EDX, mobile XRD, and SR-μXRD showed that the crusts contained two related Ca-based oxalate salts, whewellite and weddellite, and were separated from the original paint surface by varnish, indicating that they did not originate from degradation of the original paint but from a combination of microbial action and a thick accumulation of dirt. Supported by the results from these different analytical techniques, which when used together proved to be very effective in providing complementary information that addressed this specific conservation problem, and aided by the presence of the intermediate varnish layer(s), the conservators were able to remove most of the crusts with spectacular results. |
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Wos |
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Publication Date |
2019-03-23 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
978-3-319-90616-4 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:190778 |
Serial |
7609 |
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Author |
Smits, J.A.; Van Grieken, R.E. |
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Title |
Characterization of a 2,2'-diaminodiethylamine-cellulose filter toward metal cation extraction |
Type |
A1 Journal article |
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Year |
1980 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
52 |
Issue |
9 |
Pages |
1479-1489 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1980KB79500027 |
Publication Date |
2005-03-08 |
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Abbreviated Series Title |
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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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no |
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Call Number |
UA @ admin @ c:irua:116515 |
Serial |
7610 |
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Author |
Oh, K.-Y.; Ro, C.-U.; Kim, H.K.; Van Grieken, R. |
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Title |
Characterization of aerosol particles at Seoul, Korea, using ultrathin window EPMA |
Type |
P3 Proceeding |
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Year |
2000 |
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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:34106 |
Serial |
7612 |
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Author |
Oh, K.-Y.; Ro, C.-U.; Kim, H.K.; Kim, Y.-P.; Van Grieken, R. |
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Title |
Characterization of aerosol particles collected at Kosan and 1100 Hill sites, Cheju Island, Korea, using ultrathin window EPMA |
Type |
P3 Proceeding |
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Year |
2000 |
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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:34105 |
Serial |
7613 |
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Author |
Wonders, J.H.A.M.; Houweling, S.; de Bont, F.A.J.; van Leeuwen, H.P.; Eeckhaoudt, S.M.; Van Grieken, R. |
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Title |
Characterization of aerosol-associated lead by DPASV and LAMMA |
Type |
A1 Journal article |
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Year |
1994 |
Publication |
International journal of environmental analytical chemistry |
Abbreviated Journal |
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Volume |
56 |
Issue |
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Pages |
193-205 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1994PF99800002 |
Publication Date |
2007-07-07 |
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Abbreviated Series Title |
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Series Volume |
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Edition |
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ISSN |
0306-7319 |
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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no |
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Call Number |
UA @ admin @ c:irua:9514 |
Serial |
7611 |
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Author |
Van Grieken, R.; Adams, F. |
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Title |
Characterization of air particulate matter by X-ray, Raman and mass spectrometric techniques |
Type |
H3 Book chapter |
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Year |
1986 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
57-89
T2 - Chemistry of the multiphase atmospheric |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:117503 |
Serial |
7614 |
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Author |
Kontozova, V.; Godoi, R.H.M.; Spolnik, Z.; Worobiec, A.; Deutsch, F.; Van Grieken, R. |
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Title |
Characterization of air pollutants observed in three European cathedrals: is the protective glazing really effective? |
Type |
A3 Journal article |
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Year |
2005 |
Publication |
Rivista della Stazione sperimentale del vetro |
Abbreviated Journal |
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Volume |
3 |
Issue |
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Pages |
13-20 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP) |
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0391-4259 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:54920 |
Serial |
7615 |
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Author |
Rojas, C.M.; Otten, P.M.; Van Grieken, R.E. |
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Title |
Characterization of airborne particulate matter collected over the North Sea |
Type |
A1 Journal article |
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Year |
1989 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
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Volume |
20 |
Issue |
8 |
Pages |
1257-1260 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1989CN23100101 |
Publication Date |
2003-08-06 |
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ISSN |
0021-8502; 1879-1964 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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no |
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Call Number |
UA @ admin @ c:irua:116819 |
Serial |
7616 |
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Author |
d' Hondt, H. |
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Title |
Characterization of anion deficient perovskites |
Type |
Doctoral thesis |
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Year |
2011 |
Publication |
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Abbreviated Journal |
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Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Place of Publication |
Antwerpen |
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Publication Date |
0000-00-00 |
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UA library record |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:87905 |
Serial |
317 |
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Author |
Ro, C.-U.; Oh, K.-Y.; Kim, H.K.; Chun, Y.; Van Grieken, R. |
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Title |
Characterization of Asian dust using ultrathin window EPMA |
Type |
P3 Proceeding |
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Year |
1999 |
Publication |
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Abbreviated Journal |
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Volume |
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Keywords |
P3 Proceeding; 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:55576 |
Serial |
7617 |
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Author |
Osán, J.; Alföldy, B.; Kurunczi, S.; Török, S.; Bozó, L.; Worobiec, A.; Injuk, J.; Van Grieken, R. |
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Title |
Characterization of atmospheric aerosol particles over Lake Balaton, Hungary, using X-ray emission methods |
Type |
A3 Journal article |
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Year |
2001 |
Publication |
Idöjárás: quarterly journal of the Hungarian Meteorological Service |
Abbreviated Journal |
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Volume |
105 |
Issue |
3 |
Pages |
145-156 |
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Keywords |
A3 Journal article; Laboratory Experimental Medicine and Pediatrics (LEMP); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Additional Links |
UA library record |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:36090 |
Serial |
7618 |
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| Permanent link to this record |
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Author |
Palacios, O.M.; van Meel, K.; Van Grieken, R.; Marcó P., L.-M.; Vázquez, C. |
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Title |
Characterization of black volcanites from the Limay river basin, Patagonia, Argentina, using energy dispersive X-ray fluorescence spectrometry : an aid to infer human group mobility |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
Journal of radioanalytical and nuclear chemistry |
Abbreviated Journal |
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Volume |
298 |
Issue |
2 |
Pages |
1245-1255 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The investigation of hunter-gatherers archaeological sites in the Limay river basin, Patagonia, Argentina, raised questions concerning the lithic technology. The chemical characterization of artifacts, rocks and possible sources of provenances could help to elucidate the hunter-gatherer mobility. In three archaeological sitesRincón Chico 2 (RCh2/87; 14C 710 ± 60 BP), Cueva Traful I (CTI; 14C 9430 ± 230 BP) and Casa de Piedra de Ortega (CPO; 14C 2840 ± 80 BP), tools and debitage or discarded flakes made in black volcanic rock have been found. Nearby an extensive rock outcrop of black volcanite, Paso Limay quarry (CPL), with similar characteristics was located. Samples coming from these four sites were analyzed by energy dispersive X-ray fluorescence spectrometry. This characterization allowed the geochemical classification of the lithic material and to correlate the samples with the suspected source after a previous statistical analysis. The majority of the samples were classified as dacites and rhyolites. Only samples coming from CPO site, the closest place to CPL were made exclusively with the quarry rocks. A set of five samples from RCh2/87 and two samples from CTI appear to have same chemical composition as CPL in spite of this site is placed in the opposite bank of the Limay river suggesting that hunter-gatherers could accede to the quarry, eventually. Finally, only a set of five samples coming from RCh2/87 and CTI do not group with the quarry. This fact evidences the existence of secondary sources of supply. The information of this research allowed inferring ancient human mobility patterns in the region. |
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Wos |
000325624300061 |
Publication Date |
2013-07-25 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISSN |
0236-5731; 1588-2780 |
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Additional Links |
UA library record; WoS full record |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:109743 |
Serial |
7619 |
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| Permanent link to this record |
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Author |
de Nolf, W.; Janssens, K.; Rickers, K. |
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Title |
Characterization of carcinogenic Ni-rich dust particles by scanning micro-XRF/XRD at BL L |
Type |
H3 Book chapter |
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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 |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA library record |
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Open Access |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:50853 |
Serial |
5503 |
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Author |
Hart, B.T.; Douglas, G.B.; Beckett, R.; van Put, A.; Van Grieken, R. |
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Title |
Characterization of colloidal and particulate matter transported by the Magela Creek system, Northern Australia |
Type |
A1 Journal article |
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Year |
1993 |
Publication |
Hydrological processes |
Abbreviated Journal |
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Volume |
7 |
Issue |
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Pages |
105-118 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0885-6087 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:6231 |
Serial |
7620 |
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Author |
Oleshko, V.; Gijbels, R.; Jacob, W.; Alfimov, M. |
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Title |
Characterization of complex silver halide photographic systems by means of analytical electron microscopy |
Type |
A1 Journal article |
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Year |
1994 |
Publication |
Microbeam analysis |
Abbreviated Journal |
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Volume |
3 |
Issue |
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Pages |
1-29 |
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Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Place of Publication |
Deerfield Beach, Fla |
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Publication Date |
0000-00-00 |
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Abbreviated Series Title |
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Edition |
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ISSN |
1061-3420 |
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UA library record |
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Approved |
PHYSICS, APPLIED 28/145 Q1 # |
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Call Number |
UA @ lucian @ c:irua:10314 |
Serial |
319 |
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Author |
Goessens, C.; Schryvers, D.; van Landuyt, J.; Amelinckx, S.; Geuens, I.; Gijbels, R.; Jacob, W.; Verbeeck, A.; de Keyzer, R. |
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Title |
Characterization of crystal defects and analysis of iodide distribution in mixed tabular silver halide grains by conventional transmission electron microscopy, X-ray diffractometry and back-scattered electron imaging |
Type |
P3 Proceeding |
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Year |
1991 |
Publication |
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Abbreviated Journal |
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Keywords |
P3 Proceeding; Electron microscopy for materials research (EMAT); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Place of Publication |
St. Paul, Minn. |
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0000-00-00 |
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UA library record |
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Call Number |
UA @ lucian @ c:irua:710 |
Serial |
320 |
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Author |
Callaert, C. |
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Title |
Characterization of defects, modulations and surface layers in topological insulators and structurally related compounds |
Type |
Doctoral thesis |
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Year |
2020 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
180 p. |
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Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Additional Links |
UA library record |
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Notes |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:165867 |
Serial |
6288 |
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Author |
Damla, N.; Čevik, U.; Kobya, A.I.; Celik, A.; Van Grieken, R.; Kobya, Y. |
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Title |
Characterization of gas concrete materials used in buildings of Turkey |
Type |
A1 Journal article |
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Year |
2009 |
Publication |
Journal of hazardous materials |
Abbreviated Journal |
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Volume |
168 |
Issue |
2/3 |
Pages |
681-687 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The activity concentration of 226Ra, 232Th and 40K in gas concrete samples collected from different suppliers and some provinces in Turkey were measured using gamma-ray spectrometry. Knowledge of radioactivity in gas concrete used in building materials enables one to assess any possible radiological risks to human health. The mean activity concentrations observed in the gas concrete samples were 82.0, 28.2 and 383.9 Bq kg−1 for 226Ra, 232Th and 40K, respectively. The radium equivalent activity, external and internal hazard indices as well as terrestrial absorbed dose and annual effective dose rate was calculated. The results indicate that the radium equivalent activity values of gas concrete samples are lower than the limit of 370 Bq kg−1, equivalent to a gamma-dose of 1.5 mSv y−1. Moreover, mass attenuation coefficients were measured in some gas concrete samples. It was found that the mass attenuation coefficients decreased with increasing photon energies. Also, chemical compositions and structural analysis (XRD and SEM) of the gas concrete samples were investigated. |
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Wos |
000268200700014 |
Publication Date |
2009-02-26 |
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ISSN |
0304-3894 |
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:77256 |
Serial |
7621 |
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Author |
Kirilenko, D. |
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Title |
Characterization of graphene by electron diffraction |
Type |
Doctoral thesis |
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Year |
2012 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
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Place of Publication |
Antwerpen |
Editor |
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Language |
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Wos |
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Publication Date |
0000-00-00 |
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Additional Links |
UA library record |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ lucian @ c:irua:98834 |
Serial |
323 |
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Author |
Penders, A.G.; Konstantinović, M.J.; Van Renterghem, W.; Bosch, R.-W.; Schryvers, D.; Somville, F. |
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Title |
Characterization of IASCC crack tips extracted from neutron-irradiated flux thimble tube specimens in view of a probabilistic fracture model |
Type |
A1 Journal article |
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Year |
2022 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
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Volume |
571 |
Issue |
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Pages |
154015-154016 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
This study reports the properties of irradiation assisted stress corrosion crack tips extracted by means of focused-ion beam from 60 to 80 dpa neutron-irradiated O-ring specimens tested under straining conditions under a pressurized-water reactor environment. Various crack tip morphologies and surrounding deformation features were analyzed as a function of applied stress, surface oxidation state and loading form – constant versus cyclic. All investigated cracks exhibit grain boundary oxidation in front of the crack tip, with the extent of oxidation being proportional to applied stress. These findings clearly demonstrate that, under the subcritical crack propagation regime, the grain boundary oxide grows faster than the crack. On the other hand, crack tips appertaining to specimens with removed oxide layer at the outer surface show comparatively less oxidation at the crack tip, which could indicate towards crack initiation from regions that exemplify lower stress, such as the O-ring inner surface. Cyclic loading is found to have a more pronounced effect on the crack tip microstructure, demonstrating increased deformation twinning and -martensitic transformation, which signifies towards an increased susceptibility to intergranular failure. Still, the extent of crack tip grain boundary oxidation in this case agrees well with expected values for maximum stress applied during cyclic loading. All results are interpreted based on the probabilistic subcritical crack propagation mechanism and provide strong support to a stress-driven internal oxidation model. |
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Wos |
000872389200009 |
Publication Date |
2022-09-06 |
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Abbreviated Series Title |
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Series Volume |
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Edition |
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ISSN |
0022-3115 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
3.1 |
Times cited |
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Open Access |
OpenAccess |
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Notes |
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Approved |
Most recent IF: 3.1 |
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Call Number |
UA @ admin @ c:irua:190375 |
Serial |
7135 |
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Author |
Uzonyi, I.; Szöör, G.; Rozsa, P.; Vekemans, B.; Vincze, L.; Adams, F.; Drakopoulos, M.; Somogyi, A.; Kiss, Á.Z. |
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Title |
Characterization of impact materials around Barringer meteor crater by micro-PIXE nd micro-SRXRF techniques |
Type |
A1 Journal article |
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Year |
2004 |
Publication |
Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms |
Abbreviated Journal |
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Volume |
219/220 |
Issue |
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Pages |
555-560 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000221895800104 |
Publication Date |
2004-02-21 |
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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 |
0168-583x |
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:46507 |
Serial |
7622 |
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| Permanent link to this record |
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Author |
Xhoffer, C.; Wouters, L.; Artaxo, P.; van Put, A.; Van Grieken, R. |
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Title |
Characterization of individual environmental particles by beam techniques |
Type |
H3 Book chapter |
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Year |
1992 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
107-143
T2 - Environmental particles, volume 1 / B |
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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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Wos |
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Edition |
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ISSN |
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ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:2853 |
Serial |
7623 |
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| Permanent link to this record |
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Author |
Wouters, L.; Bernard, P.; Van Grieken, R. |
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Title |
Characterization of individual estuarine and marine particles by LAMMA and EPXMA |
Type |
A1 Journal article |
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Year |
1988 |
Publication |
International journal of environmental analytical chemistry |
Abbreviated Journal |
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Volume |
34 |
Issue |
1 |
Pages |
17-29 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Laser microprobe mass analysis (LAMMA) was applied to particulate matter from the Atlantic Ocean. Inferring information about the surface layer by LAMMA was not probe X-ray microanalysis (EPXMA). Geochemically relevant groups of particles had been identified by EPXMA and cluster analysis. For both locations, the most abundant ones appeared to be those rich in silicon and the alumino-silicates. Afterwards LAMMA was applied to obtain more information about the trace element composition and surface characteristics. The iron-rich phase appeared to contain significant amounts of heavy metals and of phosphate. Lead appeared to be associated in detectable amounts with alumino-silicates in the Scheldt but not with those in the Atlantic Ocean. Inferring information about the surface layer by LAMMA was not always unambiguous. |
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Wos |
A1988Q274200002 |
Publication Date |
2007-07-07 |
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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 |
0306-7319 |
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:116577 |
Serial |
7624 |
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| Permanent link to this record |
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Author |
van Malderen, H.; Rojas, C.; Van Grieken, R. |
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Title |
Characterization of individual giant aerosol particles above the North Sea |
Type |
A1 Journal article |
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Year |
1992 |
Publication |
Environmental science and technology |
Abbreviated Journal |
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Volume |
26 |
Issue |
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Pages |
750-756 |
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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 |
A1992HL93600020 |
Publication Date |
2005-03-17 |
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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 |
0013-936x; 1520-5851 |
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:2827 |
Serial |
7625 |
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| Permanent link to this record |
