Records |
Author |
Abreu, Y.; Cruz, C.M.; Pinera, I.; Leyva, A.; Cabal, A.E.; van Espen, P. |
Title |
DFT study of the hyperfine parameters and magnetic properties of ZnO doped with 57Fe |
Type |
A1 Journal article |
Year |
2014 |
Publication |
Solid state communications |
Abbreviated Journal |
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Volume |
185 |
Issue |
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Pages |
25-29 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Magnetic state of Fe-57 implanted and doped ZnO samples have been reported and studied by Mossbauer spectroscopy at different temperatures. The Mossbauer spectra mainly showed four doublets and three sextets, but some ambiguous identification remains regarding the probe site location and influence of defects in the hyperfine and magnetic parameters. In the present work some possible implantation configurations are suggested and evaluated using Monte Carlo simulation and electronic structure calculations within the density functional theory. Various implantation environments were proposed and studied considering the presence of defects. The obtained Fe-57 hyperfine parameters show a good agreement with the reported experimental values for some of these configurations. The possibility of Fe pair formation, as well as a Zn site vacancy stabilization between he second and third neighborhood of the implantation site, is supported. (C) 2014 Elsevier Ltd. All rights reserved. |
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000333751400007 |
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2014-01-23 |
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ISSN |
0038-1098 |
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Call Number |
UA @ admin @ c:irua:116839 |
Serial |
7806 |
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Author |
Vagin, M.Y.; Trashin, S.A.; Beloglazkina, E.K.; Majouga, A.G. |
Title |
Direct reagentless detection of the affinity binding of recombinant His-tagged firefly luciferase with a nickel-modified gold electrode |
Type |
A1 Journal article |
Year |
2015 |
Publication |
Mendeleev communications |
Abbreviated Journal |
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Volume |
25 |
Issue |
4 |
Pages |
290-292 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
The direct reagentless electrochemical detection of recombinant firefly luciferase binding with a gold electrode modified with nickel complex of 1,16-di[4-(2,6-dihydroxycarbonyl)pyridyl]-1,16-dioxa-8,9-dithiahexadecane has been carried out. |
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000360416600021 |
Publication Date |
2015-08-07 |
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Edition |
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ISSN |
0959-9436 |
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no |
Call Number |
UA @ admin @ c:irua:127814 |
Serial |
7811 |
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Author |
Eisma, D.; Kalf, J.; Karmini, M.; Mook, W.G.; Van Put, A.; Bernard, P.; Van Grieken, R. |
Title |
Dispersal of suspended matter in Makasar Strait and the Flores Basin |
Type |
A1 Journal article |
Year |
1989 |
Publication |
Netherlands journal of sea research |
Abbreviated Journal |
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Volume |
24 |
Issue |
4 |
Pages |
383-398 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
In November 1984 in Makasar and the Flores Basin water samples were collected (T, S, dissolved O2, total CO2), bottom samples (sediment composition) and suspended matter (particle composition, particle size). A sediment trap was moored in the Flores Basin at 4600 m depth for nearly four months, covering the dry season. In the Flores Basin there are indications for bottom flow resuspending bottom material or preventing suspended material from settling; in Makasar Strait there is probably inflow of deep water both from the south and from the north, resulting in a very slow bottom water flor. Bottom deposits in Makasar Strait and the Flores Basin are predominantly terrigenous, with an admixture of organic carbonate and silica (mostly coccoliths). Volcanic material is primarily present near to the volcanoes in the south and reaches the deeper basins by slumping. In the suspended matter no volcanic particles and little planktonic material were found, although the latter form 10 to 15% of the top sediment and of the material deposited in the sediment trap. In suspension particles with a large concentration of tin (Sn) were found associated mainly with iron. They probably come from northern Kalimantan or northern Sulawesi. Suspended matter concentrations were mainly less than 0.5 mg·dm−3, only off the Mahakam river mouth were concentrations higher than 1 mg·dm−3. Particle size was erratic because of the variable composition of the coarser particles in suspension. Organic matter concentrations in suspension (in mg·dm−3) roughly follow the distribution of total suspended matter but organic content (in %) of the suspended matter does not show any trends. All organic matter in suspension is of marine origin except in the Mahakam river and estuary. Deposition rates, as estimated from the sediment trap results, are 150 mg·cm−2·a−1 for the total sediment, 26 mg·cm−2·a−1 for carbonate and 13 mg·cm−2·a−1 for organic matter. Flocs and fibres in suspension were only found in and below the Mahakam river plume that reaches ca 400 km from the river mouth to the southeast, and in surface waters associated with plankton (diatoms). The formation of these flocs (broken-up macroflocs or marine snow) is primarily related to particle concentration, turbulence, and the presence of organisms that produce sticky material or glue particles together. |
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Publication Date |
2003-08-07 |
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Edition |
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ISSN |
0077-7579; 1873-1406 |
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Call Number |
UA @ admin @ c:irua:116825 |
Serial |
7814 |
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Author |
Janssen, E.; Kontozova-Deutsch, V.; Krupińska, B.; Moris, H.; Peckstadt, A.; van Bos, M.; Watteeuw, L.; Van Grieken, R. |
Title |
Do gaseous pollutants and particulate matter endanger our world heritage? A study in the Museum Plantin-Moretus, Antwerp |
Type |
P3 Proceeding |
Year |
2010 |
Publication |
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Pages |
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
Call Number |
UA @ admin @ c:irua:85520 |
Serial |
7820 |
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Author |
Verbueken, A.H.; Jacob, W.A.; Frederik, P.M.; Busing, W.M.; Hersten, R.C.; Van Grieken, R.E. |
Title |
Doped albumin : stndardization possibilities for LAMMA-analysis of thin freeze-dried cryosections of biological tissue |
Type |
A1 Journal article |
Year |
1984 |
Publication |
Journal de physique |
Abbreviated Journal |
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Volume |
45 |
Issue |
C:2 |
Pages |
561-564 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0302-0738 |
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no |
Call Number |
UA @ admin @ c:irua:116708 |
Serial |
7823 |
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Author |
Rojas, C.M.; Otten, P.M.; Van Grieken, R.E.; Laane, R. |
Title |
Dry aerosol deposition over the North Sea estimated from aircraft measurements |
Type |
H3 Book chapter |
Year |
1991 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
419-425
T2 - Air pollution modeling and its applic |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Call Number |
UA @ admin @ c:irua:680 |
Serial |
7826 |
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Author |
Rojas, C.M.; Injuk, J.; Van Grieken, R.; Laane, R.W. |
Title |
Dry and wet deposition fluxes of Cd, Cu, Pb, and Zn into the Southern Bight of the North Sea |
Type |
A1 Journal article |
Year |
1993 |
Publication |
Atmospheric environment: part A : general topics |
Abbreviated Journal |
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Volume |
27 |
Issue |
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Pages |
251-259 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1993KP20600014 |
Publication Date |
2003-08-06 |
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Edition |
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ISSN |
0960-1686; 1878-2124 |
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no |
Call Number |
UA @ admin @ c:irua:6236 |
Serial |
7827 |
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Author |
Belikov, K.N.; Mikhailova, L.I.; Spolnik, Z.M.; Van Grieken, R. |
Title |
EDXRF determination of impurities in potassium dihydrogenphosphate single crystals and raw materials |
Type |
A1 Journal article |
Year |
2006 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
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Volume |
35 |
Issue |
2 |
Pages |
112-115 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000236405500005 |
Publication Date |
2005-10-14 |
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Edition |
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ISSN |
0049-8246 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:56727 |
Serial |
7835 |
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Author |
Injuk, J.; van Malderen, H.; Van Grieken, R.; Swietlicki, E.; Knox, J.M.; Schofield, R. |
Title |
EDXRS study of aerosol composition variations in air masses crossing the North Sea |
Type |
A1 Journal article |
Year |
1993 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
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Volume |
22 |
Issue |
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Pages |
220-228 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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A1993LQ04200009 |
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2005-05-28 |
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Edition |
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ISSN |
0049-8246 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:6258 |
Serial |
7836 |
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Author |
Naberezhnyi, D.; Rumyantseva, M.; Filatova, D.; Batuk, M.; Hadermann, J.; Baranchikov, A.; Khmelevsky, N.; Aksenenko, A.; Konstantinova, E.; Gaskov, A. |
Title |
Effects of Ag additive in low temperature CO detection with In2O3 based gas sensors |
Type |
A1 Journal article |
Year |
2018 |
Publication |
Nanomaterials |
Abbreviated Journal |
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Volume |
8 |
Issue |
10 |
Pages |
801 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
Abstract |
Nanocomposites In2O3/Ag obtained by ultraviolet (UV) photoreduction and impregnation methods were studied as materials for CO sensors operating in the temperature range 25-250 degrees C. Nanocrystalline In2O3 and In2O3/Ag nanocomposites were characterized by X-ray diffraction (XRD), single-point Brunauer-Emmet-Teller (BET) method, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with energy dispersive X-ray (EDX) mapping. The active surface sites were investigated using Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) spectroscopy and thermo-programmed reduction with hydrogen (TPR-H-2) method. Sensor measurements in the presence of 15 ppm CO demonstrated that UV treatment leads to a complete loss of In2O3 sensor sensitivity, while In2O3/Ag-UV nanocomposite synthesized by UV photoreduction demonstrates an increased sensor signal to CO at T < 200 degrees C. The observed high sensor response of the In2O3/Ag-UV nanocomposite at room temperature may be due to the realization of an additional mechanism of CO oxidation with participation of surface hydroxyl groups associated via hydrogen bonds. |
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000451174100057 |
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2018-10-08 |
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ISSN |
2079-4991 |
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Call Number |
UA @ admin @ c:irua:156335 |
Serial |
7842 |
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Author |
Bernardi, A.; Becherini, F.; Kontozova, V.; Godoi, R.H.M.; Van Grieken, R.; Deutsch, F. |
Title |
Effects of air pollution and microclimate on stained glass windows: prliminary results in the Sainte Chapelle (Paris) |
Type |
H3 Book chapter |
Year |
2004 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
133-140
T2 - Air pollution and cultural heritage / |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Call Number |
UA @ admin @ c:irua:48940 |
Serial |
7843 |
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Author |
Somogyi, A.; Drakopoulos, M.; Vekemans, B.; Vincze, L.; Simionovici, A.S.; Adams, F. |
Title |
Effects of beamline components (undulators, monochromator, focusing devices) on the beam intensity at ID18F (ESRF) |
Type |
A1 Journal article |
Year |
2003 |
Publication |
Nuclear instruments and methods: B |
Abbreviated Journal |
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Volume |
199 |
Issue |
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Pages |
559-564 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000180925400107 |
Publication Date |
2003-02-17 |
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UA @ admin @ c:irua:40711 |
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7846 |
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Author |
Szalóki, I.; Szegedi, S.; Varga, K.; Braun, M.; Osán, J.; Van Grieken, R. |
Title |
Efficiency calibartion of energy-dispersive detectors for application in quantitative x- and γ-ray spectrometry |
Type |
A1 Journal article |
Year |
2001 |
Publication |
X-ray spectrometry |
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Volume |
30 |
Issue |
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Pages |
49-55 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000166923700010 |
Publication Date |
2002-08-25 |
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0049-8246 |
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Call Number |
UA @ admin @ c:irua:32611 |
Serial |
7851 |
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Author |
De Vis, K.; Jembrih-Simbürger, D.; Schalm, O.; Schreiner, M.; Caen, J. |
Title |
Einfluss verschiedener Silbersalze auf die Farbintensität von Silbergelb : analytische Untersuchungen |
Type |
A2 Journal article |
Year |
2002 |
Publication |
Zeitschrift für Kunsttechnologie und Konservierung |
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Volume |
16 |
Issue |
1 |
Pages |
147-157 |
Keywords |
A2 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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0931-7198 |
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Call Number |
UA @ admin @ c:irua:107748 |
Serial |
7855 |
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Author |
Fenu, A.; De Wilde, W.; Gaertner, M.; Weemaes, M.; de Gueldre, G.; van de Steene, B. |
Title |
Elaborating the membrane life concept in a full scale hollow-fibers MBR |
Type |
A1 Journal article |
Year |
2012 |
Publication |
Journal of membrane science |
Abbreviated Journal |
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Volume |
421 |
Issue |
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Pages |
349-354 |
Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
The membrane life-time has a strong impact on competitivity and viability of MBRs. This study critically analyzes the membrane life-time concept, approaching it through different assessment methods. A full scale MBR's membrane life-time was assessed on the following: (i) maintaining the permeate flow throughput to the MBR; (ii) the permeability decline; (iii) oxidative aging; (iv) the increase in energy costs; and (v) mechanical aging. The method based on permeability decline provides a membrane life-time estimate up to a theoretical end. It was further elaborated inherently to operations with no long-term flux decline. The increase in operating pressure remains the main end-of-life trigger for deciding when to replace membrane modules. On the contrary, mechanical and permeate flow throughput analysis of the data are not able to provide a clear estimate of the membrane life-time. As for the membrane life-time estimation based on chlorine contact, it was found to be too optimistic. Complete irreversible fouling occurs before maximum contact time with chlorine is reached. At end-of-life operating conditions, the energy consumption raised of 170% due to the reduced flow rate. The cost raise appears high but still affordable. Earlier membrane replacement thus can never be counterbalanced by energy costs saving. (C) 2012 Elsevier B.V. All rights reserved. |
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000308741100039 |
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2012-08-07 |
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0376-7388 |
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Call Number |
UA @ admin @ c:irua:101790 |
Serial |
7856 |
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Author |
Abreu, Y.; Cruz, C.M.; van Espen, P.; Pérez, C.; Piñera, I.; Leyva, A.; Cabal, A.E. |
Title |
Electric field gradient calculations in ZnO samples implanted with 111In(111Cd) |
Type |
A1 Journal article |
Year |
2012 |
Publication |
Solid state communications |
Abbreviated Journal |
|
Volume |
152 |
Issue |
5 |
Pages |
399-402 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
A first-principles study of the electric field gradient (EFG) calculated for ideal and In-111(Cd-111) implanted ZnO samples is reported in the present work. The study was made for ZnO ideal hexagonal structures and supercells were introduced in order to consider the possible implantation environments. The calculation was done using the “WIEN2k” code within the density functional theory, the exchange and correlation effects were determined by the GGA approximation. Three possible In-111(Cd-111) implantation configurations were studied, one substitutional incorporation at cation site and two interstitials. The obtained EFG values for the ideal structure and the substitutional site are in good agreement with the experimental reports measured by perturbed angular correlation (PAC) and high precision nuclear magnetic resonance (NMR). Thus, the ascription of substitutional incorporation of In-111(Cd-111) probe atom at the ZnO cation site after annealing was confirmed. (C) 2011 Elsevier Ltd. All rights reserved. |
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 |
000301329200016 |
Publication Date |
2011-12-09 |
Series Editor |
|
Series Title |
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Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0038-1098 |
ISBN |
|
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 ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:97821 |
Serial |
7857 |
Permanent link to this record |
|
|
|
Author |
Mescia, L.; Bia, P.; Caratelli, D.; Chiapperino, M.A.; Stukach, O.; Gielis, J. |
Title |
Electromagnetic mathematical modeling of 3D supershaped dielectric lens antennas |
Type |
A1 Journal article |
Year |
2016 |
Publication |
Mathematical problems in engineering: theory, methods, and applications |
Abbreviated Journal |
|
Volume |
|
Issue |
|
Pages |
8130160-10 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
The electromagnetic analysis of a special class of 3D dielectric lens antennas is described in detail. This new class of lens antennas has a geometrical shape defined by the three-dimensional extension of Gielis formula. The analytical description of the lens shape allows the development of a dedicated semianalytical hybrid modeling approach based on geometrical tube tracing and physical optic. In order to increase the accuracy of the model, the multiple reflections occurring within the lens are also taken into account. |
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 |
000372246600001 |
Publication Date |
2016-02-29 |
Series Editor |
|
Series Title |
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Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
1024-123x; 1563-5147 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
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Times cited |
|
Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:131516 |
Serial |
7866 |
Permanent link to this record |
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|
|
Author |
Martínez-Dueñas, E.J.R.; de Jong van Coevorden, C.M.; Stukach, O.V.; Panokin, N.V.; Gielis, J.; Caratelli, D. |
Title |
Electromagnetic modeling and design of a novel class of complementary split‐ring resonators |
Type |
A1 Journal article |
Year |
2019 |
Publication |
International journal of RF and microwave computer-aided engineering |
Abbreviated Journal |
|
Volume |
29 |
Issue |
4 |
Pages |
e21582 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
This research study reports the assessment of complementary split ring resonators based on Gielis transformation as basic elements for the design of high‐performance microwave components in printed technology. From the electromagnetic simulation of said structures, suitable equivalent circuit models are extracted and analyzed. Physical prototypes are fabricated and tested for design validation. The obtained results confirm that the adoption of supershaped geometries enables the synthesis of very compact scalable microwave filters. |
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 |
000460308500020 |
Publication Date |
2018-11-19 |
Series Editor |
|
Series Title |
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Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
1096-4290 |
ISBN |
|
Additional Links |
UA library record; WoS full record |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:155021 |
Serial |
7867 |
Permanent link to this record |
|
|
|
Author |
Rojas, C.M.; Van Grieken, R.E. |
Title |
Electron microprobe characterization of individual aerosol particles collected by aircraft above the Southern Bight of the North Sea |
Type |
A1 Journal article |
Year |
1992 |
Publication |
Atmospheric environment : an international journal |
Abbreviated Journal |
|
Volume |
26a |
Issue |
|
Pages |
1231-1237 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
|
Address |
|
Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
|
Wos |
A1992HM11500002 |
Publication Date |
2003-08-06 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
1352-2310 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:2826 |
Serial |
7870 |
Permanent link to this record |
|
|
|
Author |
Siriwardane, E.M.D.; Karki, P.; Sevik, C.; Cakir, D. |
Title |
Electronic and mechanical properties of stiff rhenium carbide monolayers: A first-principles investigation |
Type |
A1 Journal article |
Year |
2018 |
Publication |
Applied surface science |
Abbreviated Journal |
|
Volume |
458 |
Issue |
|
Pages |
762-768 |
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
Abstract |
In this study, we predicted two new stable metallic Re-C based monolayer structures with a rectangular (r-ReC2) and a hexagonal (h-Re2C) crystal symmetry using first-principle calculations based on density functional theory. Our results obtained from mechanical and phonon calculations and high-temperature molecular dynamic simulations clearly proved the stability of these two-dimensional (2D) crystals. Interestingly, Re-C monolayers in common transition metal carbide structures (i.e. MXenes) were found to be unstable, contrary to expectations. We found that the stable structures, i.e. r-ReC2 and h-Re2C, display superior mechanical properties over the well-known 2D materials. The Young's modulus for r-ReC2 and h-Re2C are extremely high and were calculated as 351 (1310) and 617 (804) N/m (GPa), respectively. Both materials have larger Young's modulus values than the most of the well-known 2D materials. We showed that the combination of the short strong directional p-d bonds, the high coordination number of atoms in the unit-cell and high valence electron density result in strong mechanical properties. Due to its crystal structure, the r-ReC2 monolayer has anisotropic mechanical properties and the crystallographic direction parallel to the C-2 dimers is stiffer compared to perpendicular direction due to strong covalent bonding within C-2 dimers. h-Re2C was derived from the corresponding bulk structure for which we determined the critical thickness for the dynamically stable bulk-derived monolayer structures. In addition, we also investigated the electronic of these two stable structures. Both exhibit metallic behavior and Re-5d orbitals dominate the states around the Fermi level. Due to their ultra high mechanical stability and stiffness, these novel Re-C monolayers can be exploited in various engineering applications. |
Address |
|
Corporate Author |
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Thesis |
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Publisher |
|
Place of Publication |
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Editor |
|
Language |
|
Wos |
000441400000088 |
Publication Date |
2018-07-11 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0169-4332 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:193776 |
Serial |
7875 |
Permanent link to this record |
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|
|
Author |
Khazaei, M.; Wang, V.; Sevik, C.; Ranjbar, A.; Arai, M.; Yunoki, S. |
Title |
Electronic structures of iMAX phases and their two-dimensional derivatives: A family of piezoelectric materials |
Type |
A1 Journal article |
Year |
2018 |
Publication |
Physical review materials |
Abbreviated Journal |
|
Volume |
2 |
Issue |
7 |
Pages |
074002 |
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
Abstract |
Recently, a group of MAX phases, (Mo2/3Y1/3)(2)AlC, (Mo2/3Sc1/3)(2)AlC, (W2/3Sc1/3)(2)AlC,(W2/3Y1/3)(2)AlC, and (V-2/3 Zr-1/3)(2)AlC, with in-plane ordered double transition metals, named iMAX phases, have been synthesized. Experimentally, some of these MAX phases can be chemically exfoliated into two-dimensional (2D) single- or multilayered transition metal carbides, so-called MXenes. Accordingly, the 2D nanostructures derived from iMAX phases are named iMXenes. Here we investigate the structural stabilities and electronic structures of the experimentally discovered iMAX phases and their possible iMXene derivatives. We show that the iMAX phases and their pristine, F, or OH-terminated iMXenes are metallic. However, upon 0 termination, (Mo2/3Y1/3)(2)C, (Mo2/3Sc1/3)(2)C, (W2/3Y1/3)(2)C, and (W2/3Sc1/3)(2)C iMXenes turn into semiconductors. Owing to the absence of centrosymmetry, the semiconducting iMXenes may find applications in piezoelectricity. Our calculations reveal that the semiconducting iMXenes possess giant piezoelectric coefficients as large as 45 x 10(-)(10) C/m. |
Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
|
Wos |
000438354500001 |
Publication Date |
2018-07-12 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
2475-9953 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:193791 |
Serial |
7876 |
Permanent link to this record |
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|
|
Author |
Mirzakhani, M.; Zarenia, M.; Vasilopoulos, P.; Peeters, F.M. |
Title |
Electrostatically confined trilayer graphene quantum dots |
Type |
A1 Journal article |
Year |
2017 |
Publication |
Physical review B |
Abbreviated Journal |
|
Volume |
95 |
Issue |
15 |
Pages |
155434 |
Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
Abstract |
Electrically gating of trilayer graphene (TLG) opens a band gap offering the possibility to electrically engineer TLG quantum dots. We study the energy levels of such quantum dots and investigate their dependence on a perpendicular magnetic field B and different types of stacking of the graphene layers. The dots are modeled as circular and confined by a truncated parabolic potential which can be realized by nanostructured gates or position-dependent doping. The energy spectra exhibit the intervalley symmetry E-K(e) (m) = -E (h)(K') (m) for the electron (e) and hole (h) states, where m is the angular momentum quantum number and K and K' label the two valleys. The electron and hole spectra for B = 0 are twofold degenerate due to the intervalley symmetry E-K (m) = E-K' [-(m + 1)]. For both ABC [alpha = 1.5 (1.2) for large (small) R] and ABA (alpha = 1) stackings, the lowest-energy levels show approximately a R-alpha dependence on the dot radius R in contrast with the 1/R-3 one for ABC-stacked dots with infinite-mass boundary. As functions of the field B, the oscillator strengths for dipole-allowed transitions differ drastically for the two types of stackings. |
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 |
000399797200003 |
Publication Date |
2017-04-22 |
Series Editor |
|
Series Title |
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Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
2469-9969; 2469-9950 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
6 |
Open Access |
|
Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:152652 |
Serial |
7878 |
Permanent link to this record |
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|
|
Author |
Deutsch, F.; Stranger, M.; Kaplinskii, A.E.; Samek, L.; Joos, P.; Van Grieken, R. |
Title |
Elemental and ionic concentrations in the urban aerosol in Antwerp, Belgium |
Type |
A1 Journal article |
Year |
2004 |
Publication |
Journal of environmental science and health: part A: toxic/hazardous substances & environmental engineering |
Abbreviated Journal |
|
Volume |
39 |
Issue |
3 |
Pages |
539-558 |
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 |
000220119800001 |
Publication Date |
2004-02-19 |
Series Editor |
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Series Title |
|
Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
|
ISSN |
|
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:44335 |
Serial |
7883 |
Permanent link to this record |
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|
|
Author |
Hoornaert, S.; Godoi, R.H.M.; Van Grieken, R. |
Title |
Elemental and single particle aerosol characterisation at a background station in Kazakhstan |
Type |
A1 Journal article |
Year |
2004 |
Publication |
Journal of atmospheric chemistry |
Abbreviated Journal |
|
Volume |
48 |
Issue |
|
Pages |
301-315 |
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 |
|
Place of Publication |
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Editor |
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Language |
|
Wos |
000224389700006 |
Publication Date |
2004-10-12 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0167-7764 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:49509 |
Serial |
7884 |
Permanent link to this record |
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|
|
Author |
Das, B.K.; Singh, M.; Van Grieken, R. |
Title |
The elemental chemistry of sediments in the Nainital lake, Kumaun Himalaya, India |
Type |
A1 Journal article |
Year |
1995 |
Publication |
The science of the total environment |
Abbreviated Journal |
|
Volume |
168 |
Issue |
|
Pages |
85-90 |
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 |
A1995RH03700008 |
Publication Date |
2002-07-25 |
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 |
|
ISSN |
0048-9697; 1879-1026 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:12347 |
Serial |
7886 |
Permanent link to this record |
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|
|
Author |
Smekens, A.; Knupfer, M.; Berghmans, P.; Van Grieken, R. |
Title |
The elemental composition and microstructure of soot emitted by different sources |
Type |
A1 Journal article |
Year |
2000 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
|
Volume |
31 |
Issue |
S1 |
Pages |
917-918 |
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 |
|
Publication Date |
|
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 |
|
ISSN |
0021-8502; 1879-1964 |
ISBN |
|
Additional Links |
UA library record |
Impact Factor |
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Times cited |
|
Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:31647 |
Serial |
7887 |
Permanent link to this record |
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|
|
Author |
Rojas, C.M.; Van Grieken, R.; Maenhaut, W. |
Title |
Elemental composition of aircraft-sampled aerosols above the Southern Bight of the North Sea |
Type |
A1 Journal article |
Year |
1993 |
Publication |
Water, air and soil pollution |
Abbreviated Journal |
|
Volume |
71 |
Issue |
|
Pages |
391-404 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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 |
A1993MT74000011 |
Publication Date |
2004-11-15 |
Series Editor |
|
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 |
|
ISSN |
0049-6979; 1573-2932 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
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Times cited |
|
Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:6263 |
Serial |
7888 |
Permanent link to this record |
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|
|
Author |
Hellar-Kihampa, H.; Potgieter-Vermaak, S.; van Meel, K.; Gatto Rotondo, G.; Kishimba, M.; Van Grieken, R. |
Title |
Elemental composition of bottom-sediments from Pangani river basin, Tanzania : lithogenic and anthropogenic sources |
Type |
A1 Journal article |
Year |
2012 |
Publication |
Toxicological and environmental chemistry |
Abbreviated Journal |
|
Volume |
94 |
Issue |
3 |
Pages |
525-544 |
Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
River-bed sediments from the Pangani basin, Tanzania, were characterized for elemental compositions, following contamination risks from rapid expansions of human activities in the area. Samples were collected during two individual seasons and analyzed by high-polarizing beam energy dispersive X-ray fluorescence (EDXRF) for eight major and 14 trace elements. Evaluation of enrichment factors (EFs) was used to investigate the elemental flux and assess the contributions of natural and anthropogenic influences. The abundances of the major elements followed the order Si > Al > Fe > Ca > K > Ti > Mn > P, similar to that of the upper earth's crust, and were generally from the weathering of the bed-rock. The high concentrations of typical anthropogenic trace-elements (Cr < 160 mg kg−1, V < 85 mg kg−1, Ni < 60 mg kg−1, Cu < 87 mg kg−1, La < 90 mg kg−1) coupled with high EFs (>2) in some locations indicated contamination associated with agricultural and industrial activities. Factor analysis extracted five principal components that contributed to 96.0% of the total observed variance. The results indicated that river-bed sediments of the Pangani basin were influenced to a larger extent by lithogenic sources than anthropogenic impacts. |
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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Language |
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Wos |
000304276100007 |
Publication Date |
2012-01-16 |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0277-2248 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:97080 |
Serial |
7889 |
Permanent link to this record |
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|
|
Author |
Eltayeb, M.A.H.; Injuk, J.; Maenhaut, W.; Van Grieken, R.E. |
Title |
Elemental composition of mineral aerosol generated from Sudan Sahara sand |
Type |
A1 Journal article |
Year |
2001 |
Publication |
Journal of atmospheric chemistry |
Abbreviated Journal |
|
Volume |
40 |
Issue |
|
Pages |
247-273 |
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 |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000171535300003 |
Publication Date |
2002-12-23 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0167-7764 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
|
Notes |
|
Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
Call Number |
UA @ admin @ c:irua:36088 |
Serial |
7890 |
Permanent link to this record |
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|
|
Author |
Silva, F.S.; Godoi, R.H.M.; Tauler, R.; de André, P.A.; Saldiva, P.H.N.; Van Grieken, R.; de Marchi, M.R.R. |
Title |
Elemental composition of PM2.5 in Araraquara City (Southeast Brazil) during seasons with and without sugar cane burning |
Type |
A2 Journal article |
Year |
2015 |
Publication |
Journal of environmental protection |
Abbreviated Journal |
|
Volume |
6 |
Issue |
5 |
Pages |
426-434 |
Keywords |
A2 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Particulate matter with an aerodynamic diameter below 2.5 μm (PM2.5), present in polluted air, has been associated with a large spectrum of health impairments, mainly because of its deep deposition into the lungs. Araraquara City (Southeast Brazil) is surrounded by sugar-cane plantations, which are burned to facilitate the harvesting; this process causes environmental pollution due to the large amounts of soot that are released into the atmosphere. In this work, the elemental composition of PM2.5 was studied in two scenarios, namely in sugar-cane harvesting (HV) and in non-harvesting (NHV) seasons. The sampling strategy included one campaign in each season. PM2.5 was collected using a dichotomous sampler (10 L·min-1, 24 h) with PTFE filters. Information concerning the bulk elemental concentration was provided by energy-dispersive X-ray fluorescence. Enrichment factor analysis indicated that S, Cl, K, Cr, Ni, Cu, Zn, As, Cd and Pb were highly enriched relative to their crustal ratios (to Al). Principal component analysis was used to get some insight about the sources of the elements. Principal component 1 (PC1) explained 30.5% of data variance. The elements that had high loading (>0.7) were: S, Cr, As, and Pb; these are associated with combustion of fossil fuels. In principal component 2 (PC2), Cl, Cu, Zn, and Cd showed high loadings; these elements are associated with biomass burning. The Ni concentration found is three times larger than the threshold of risk for lung cancer, as recommended by the World Health Organization. |
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2015-05-04 |
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2152-2197 |
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UA @ admin @ c:irua:125885 |
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7891 |
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