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Records |
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Author |
Dekov, V.M.; Subramanian, V.; Van Grieken, R. |
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Title |
Chemical composition of suspended matter and sediments from the Indian sub-continent: a fifteen-year research survey |
Type |
H3 Book chapter |
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Year |
1998 |
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Abbreviated Journal |
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Volume |
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Pages |
81-92
T2 - Recent trends in environmental biogeoch |
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H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:22778 |
Serial |
7659 |
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| Permanent link to this record |
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Author |
Torfs, K.; Van Grieken, R. |
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Title |
Chemical relations between atmospheric aerosols, deposition and stone decay layers on historic buildings at the Mediterranean coast |
Type |
A1 Journal article |
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Year |
1997 |
Publication |
Atmospheric environment : an international journal |
Abbreviated Journal |
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Volume |
31 |
Issue |
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Pages |
2179-2192 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Edition |
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ISSN |
1352-2310 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:18777 |
Serial |
7660 |
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| Permanent link to this record |
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Author |
Heyne, M.H. |
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Title |
Chemistry and plasma physics challenges for 2D materials technology |
Type |
Doctoral thesis |
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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 |
167 p. |
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Keywords |
Doctoral thesis; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
Transition-metal dichalcogenides such as MoS2 or WS2 are semiconducting materials with a layered structure. One single layer consists of a plane of metal atoms terminated on the top and bottom by the chalcogen atoms sulfur, selenium, or tellurium. These layers show strong in-plane covalent bonding, whereas the Van-der-Waals bonds in between adjacent layers are weak. Those weak bonds allow the microcleavage and extraction of a monolayer. Transistors built on such monolayer nanosheets are promising due to high electrostatic controllability in comparison to a bulk semiconductor. This is important for fast switching speed and low-power consumption in the OFF-state. Nonetheless, prototypes of such nanosheet transistors show non-idealities due to the fabrication process. Closed films on a large area cannot be obtained by mechanical exfoliation from mm-sized crystals. For wafer-level processing, synthetic growth methods are needed. It is a challenge to obtain a few layer thick crystals with large lateral grains or even without grain boundaries with synthetic growth techniques. This requires pre-conditioned monocrystalline substrates, high-temperature deposition, and polymer-assisted transfer to other target substrates after the growth. Such transfer is a source of cracks in the film and degrades the layers' promising properties by residual polymer from the bond material. Apart from transfer, patterning of the stacked 2D layers is necessary to build devices. The patterning of a 2D material itself or another material on top of it is challenging. The integration of the nanosheets into miniaturized devices cannot be done by conventional continuous-wave dry etching techniques due to the absence of etch stop layers and the vulnerability of these thin layers. To eliminate these issues in growth and integration, we explored the deposition methods on wafer-level and low-damage integration schemes. To this end, we studied the growth of MoS2 by a hybrid physical-chemical vapor deposition for which metal layers were deposited and subsequently sulfurized in H2S to obtain large area 2D layers. The impact of sulfurization temperature, time, partial H2S pressure, and H2 addition on the stoichiometry, crystallinity, and roughness were explored. Furthermore, a selective low-temperature deposition and conversion process at 450 °C for WS2 by the precursors WF6, H2S, and Si was considered. Si was used as a reducing agent for WF6 to deposit thin W films and H2S sulfurized this film in situ. The impact of the reducing agent amount, its surface condition, the temperature window, and the necessary time for the conversion of Si into W and W into WS2 were studied. Further quality improvement strategies on the WS2 were implemented by using extra capping layers in combination with annealing. Capping layers such as Ni and Co for metal-induced crystallization were compared to dielectric capping layers. The impact of the metal capping layer and its thickness on the recrystallization was evaluated. The dielectric capping layer's property to suppress sulfur loss under high temperature was explored. The annealings, which were done by rapid thermal annealing and nanosecond laser annealing, were discussed. Eventually, the fabrication of a heterostack with a MoS2 base layer and selectively grown WS2 was studied. Atomic layer etching was identified as attractive technique to remove the solid precursor Si from MoS2 in a layer-by-layer fashion. The in-situ removal of native SiO2 and the impact towards MoS2 was determined. The created patterned Si on MoS2 was then converted into patterned WS2 on MoS2 by the selective WF6/H2S process developed earlier. This procedure offers an attractive, scalable way to enable the fabrication of 2D devices with CMOS-compatible processes and contributes essential progress in the field 2D materials technology. |
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no |
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Call Number |
UA @ admin @ c:irua:162027 |
Serial |
7662 |
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| Permanent link to this record |
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Author |
Camuffo, D.; Pagan, E.; Schellen, H.; Van Grieken, R.; Bencs, L.; et al. |
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Title |
Church heating and cultural heritage conservation : guide to the analysis of pros and cons of various heating systems |
Type |
MA2 Book as author |
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Year |
2006 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
240 p. |
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Keywords |
MA2 Book as author; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
88-370-5034-8 |
Additional Links |
UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:117468 |
Serial |
7665 |
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| Permanent link to this record |
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Author |
Bondarenko, I.; van Espen, P.; Treiger, B.; Van Grieken, R.; Adams, F. |
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Title |
Classification of coal mine dust particles through fuzzy clustering of their energy-dispersive electron microprobe X-ray spectra |
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 |
33-37 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
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Abbreviated Series Title |
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Edition |
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ISSN |
1061-3420 |
ISBN |
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Additional Links |
UA library record |
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Impact Factor |
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no |
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Call Number |
UA @ admin @ c:irua:8916 |
Serial |
7667 |
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Author |
Alemam, E. |
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Title |
Cleaning of wall paintings by Polyvinyl alcohol–Borax/Agarose (PVA–B/AG) double network hydrogels : characterization, assessment, and applications |
Type |
Doctoral thesis |
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Year |
2021 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
184 p. |
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Keywords |
Doctoral thesis; Engineering sciences. Technology; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES); Antwerp X-ray Imaging and Spectroscopy (AXIS) |
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Abstract |
Wall paintings make up an important section of cultural heritage. They resemble time portals that can be used to travel back into the past and witness the life of our ancestors. In these paintings, the ancient artists depicted the different aspects of their life, such as cooking, baking, farming, manufacturing, as well as thoughts and beliefs. Unfortunately, wall paintings are susceptible to degradation over time in the form of the accumulations of dirt and deposits on the painted surfaces and loss of adhesion of the paint layers at the surface. Therefore, the removal of these deposits is one of the primary duties of conservator-restorers. Such operations are intended to restore the painted surface to a condition close enough to its original state. Since cleaning artworks may cause undesirable physicochemical alterations and is nonreversible, the proper cleaning procedure should be adopted. In this regard, numerous gels have been developed and exploited for the cleaning of various artwork surfaces. Lately, polyvinyl alcohol-borax (PVA-B) and agarose (AG) hydrogels have been widely employed as cleaning materials by conservator-restorers. However, both hydrogels have shown limitations in specific cleaning practices. In this work, we investigated a new double network hydrogel based on blending PVA-B and agarose to avoid the limitations posed by the constituting hydrogels. For this reason, a detailed characterization of the PVA–B/AG double network hydrogel was performed, including chemical structure, liquid phase retention, mechanical strength, rheological behavior, and self-healing behavior of various PVA-B/AG hydrogels. These new hydrogels revealed better properties than PVA-B and agarose hydrogels and obviated their limitations. A laboratory experiment on the removal of deteriorated Paraloid® B72 proved that the PVA-B/AG hydrogel loaded 10%/10% MEK/1-PeOH was able to remove these layers efficiently. Therefore, the hydrogel was tested on a wall painting from the Temple of Seti I in Abydos – Egypt. It removed the glossy/darkened consolidant from the wall painting and restored the original matt appearance of the painted surface. In another application on the painted ceiling of the same temple, the hydrogel was tested for removing thick soot layers. The hydrogel formulation (loaded with 5% ammonia, 0.3% ammonium carbonate, and 0.3% EDTA) removed these layers with no noticeable damage to the paint layers. In a wide-scale application of the hydrogel (loaded with 10% propylene carbonate), it removed a highly deteriorated varnish layer from a 19-c wall painting. All the traditional cleaning methods employed caused damage to the paint layers, proving that gel cleaning can be a safer cleaning alternative in some cases. |
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Approved |
Most recent IF: NA |
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Call Number |
UA @ admin @ c:irua:183381 |
Serial |
7671 |
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| Permanent link to this record |
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Author |
Wood, J.; Geerts, R.; Majean, L.; Coene, V.; Vanheeswijck, J.; de Smalen, D.; Ronda, T.; Keizer, K. |
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Title |
De combinatie werk-gezin en het gebruik van formele kinderopvang bij vrouwen met een migratieachtergrond : een mixed methods-benadering |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
Sociologos (Brussel) |
Abbreviated Journal |
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Volume |
40 |
Issue |
2-3-4 |
Pages |
123-149 |
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Keywords |
A1 Journal article; Sociology; Centre for Population, Family and Health; Sustainable Energy, Air and Water Technology (DuEL); Centre for Research on Environmental and Social Change |
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ISSN |
2295-8150 |
ISBN |
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Additional Links |
UA library record |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:167658 |
Serial |
7678 |
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| Permanent link to this record |
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Author |
Shevchenko, V.P.; Lisitzin, A.P.; Kuptzov, V.M.; Van Malderen, H.; Martin, J.M.; Van Grieken, R.; Huang, W.W. |
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Title |
Composition of aerosols in the marine boundary layer over the seas of the western Russian Arctic |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Omnia therapeutica. supplemento |
Abbreviated Journal |
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Volume |
39 |
Issue |
1 |
Pages |
142-151 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
During the SPASIBA expedition (Scientific Program on Arctic and Siberian Aquatorium) on board RV “Yakov Smirnitzky” to the Laptev Sea 10 samples of aerosols in the marine boundary layer have been collected by nylon meshes in August-September 1991. The composition of the samples was studied by a combined approach of different analytical techniques (single-particle analysis, instrumental neutron activation analysis, and atomic absorption spectrometry). The mass concentration of coarse (>1 mu m) insoluble fraction of aerosols was from 0.08 to 0.46 mu g/m(3). In all samples remains of land vegetation were found as the main component. The organic carbon content of the aerosols ranged from 23 to 49%. The inorganic part of the samples is represented mainly by alumosilicates and quartz, In all samples anthropogenic fly ash particles were detected, Temporal variations of the element concentrations are caused by various air masses transported to the study area. |
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Wos |
000079729200019 |
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ISSN |
0030-1574 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Open Access |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:103979 |
Serial |
7706 |
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| Permanent link to this record |
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Author |
Shevchenko, V.P.; Lisitsin, A.P.; Kuptsov, V.M.; van Malderen, H.; Martin, J.M.; Van Grieken, R.; Huang, W.W. |
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Title |
Composition of aerosols in the surface boundary layer of the atmosphere over the seas of the Western Russian Arctic |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Oceanology |
Abbreviated Journal |
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Volume |
39 |
Issue |
1 |
Pages |
128-136 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0001-4370 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:24721 |
Serial |
7707 |
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| Permanent link to this record |
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Author |
Shevchenko, V.P.; Lisitzin, A.P.; Kuptzov, V.M.; Ivanov, G.I.; Lukashin, V.N.; Martin, J.M.; Rusakov, V.Y.; Safarova, S.A.; Serova, V.V.; Van Grieken, R.; van Malderen, H. |
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Title |
Composition of aerosols over the Laptev, the Kara, the Barents, the Greenland and the Norwegian seas |
Type |
H3 Book chapter |
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Year |
1995 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
7-16
T2 - Russian-German cooperation: Laptev Sea s |
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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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UA library record |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:12358 |
Serial |
7708 |
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| Permanent link to this record |
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Author |
Shevchenko, V.P.; Van Grieken, R.E.; van Malderen, H.; Lisitzin, A.P.; Kuptsov, V.M.; Serova, V.V. |
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Title |
Composition of individual aerosol particles in the marine boundary layer over seas of the Western Russian Arctic |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Doklady earth sciences |
Abbreviated Journal |
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Volume |
366 |
Issue |
4 |
Pages |
546-551 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000086607800027 |
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Abbreviated Series Title |
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Series Volume |
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ISSN |
1028-334x |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Times cited |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:27582 |
Serial |
7711 |
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| Permanent link to this record |
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Author |
Darchuk, L.; Stefaniak, E.A.; Vázquez, C.; Palacios, O.M.; Worobiec, A.; Van Grieken, R. |
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Title |
Composition of pigments on human bones found in excavations in Argentina studied with micro-Raman spectrometry and scanning electron microscopy |
Type |
A1 Journal article |
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Year |
2009 |
Publication |
e-Preservation Science |
Abbreviated Journal |
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Volume |
6 |
Issue |
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Pages |
112-117 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP) |
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Abstract |
Results on analysis of prehistoric pigments from excavations and pigments on coloured child bones from North Patagonia, Argentina, are reported. To analyze their composition we used two micro-analytical techniques: micro- Raman spectrometry (MRS) and scanning electron microscopy coupled with X-ray micro-analysis (SEM/EDX). Most investigated excavated pigments show red or yellow ochres consistent with reddish or yellow minerals, such as á- and ã-goethite, haematite, erdite, haapalaite and jarosite. Raman spectra show also evidence of calcium oxalate monohydrate and calcite indicating lichen activity. Pigments covering human bones were identified as hematite and magnetite. This study allows us to infer that pigments found in excavation were employed for burial ceremonies, even though distances between excavated pigment archaeological site and buried remains are quite far, more than 50 km in a straight line. |
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Abbreviated Series Title |
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Edition |
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ISSN |
1854-3928 |
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UA library record |
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Notes |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:78469 |
Serial |
7712 |
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| Permanent link to this record |
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Author |
Cagno, S. |
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Title |
Compositional analysis of historical glass |
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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Pages |
346 p. |
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Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:98145 |
Serial |
7714 |
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Author |
Vázquez, C.; Darchuk, L.; Stefaniak, E.A.; Van Grieken, R.; Palacios, O.R. |
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Title |
Compositional correlation between pigments found in excavations and on human bones investigated with micro-raman spectrometry and scanning electron microscopy |
Type |
H2 Book chapter |
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Year |
2011 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
13-18
T2 - Integration of nuclear spectrometry met |
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Keywords |
H2 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISBN |
978-92-0-121310-5 |
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no |
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Call Number |
UA @ admin @ c:irua:108205 |
Serial |
7716 |
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Author |
Ravindra, K.; Bencs, L.; Wauters, E.; de Hoog, J.; Deutsch, F.; Roekens, E.; Bleux, N.; Berghmans, P.; Van Grieken, R. |
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| |
Title |
Concentration trends and sources of polycyclic aromatic hydrocarbons (PAHs) in Belgium |
Type |
A3 Journal article |
| |
Year |
2005 |
Publication |
IASTA bulletin |
Abbreviated Journal |
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| |
Volume |
17 |
Issue |
1/2 |
Pages |
98-99 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:57214 |
Serial |
7721 |
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Author |
Van Winckel, T.; Al-Omari, A.; Takás, I.; Wett, B.; Bachmann, B.; Sturm, B.; Bott, C.; Vlaeminck, S.E.; Murthy, S.; De Clippeleir, H. |
|
| |
Title |
Conceptual framework for deammonification in a combined floc-granule system : impact of aeration control, external selector and bioaugmentation based on full-scale data from WWTP in Strass |
Type |
P3 Proceeding |
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Year |
2017 |
Publication |
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Abbreviated Journal |
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| |
Volume |
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Issue |
|
Pages |
16 p.
T2 - IWA 2017 Conference on Sustainable Wast |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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no |
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Call Number |
UA @ admin @ c:irua:151109 |
Serial |
7722 |
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Author |
Reniers, G.L.L.; Sörensen, K.; Vrancken, K. |
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Title |
Conclusions and recommendations |
Type |
H1 Book chapter |
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Year |
2013 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
265-268
T2 - Management principles of sustainable |
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Keywords |
H1 Book chapter; Engineering Management (ENM); Sustainable Energy, Air and Water Technology (DuEL) |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
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ISBN |
9783527649488 |
Additional Links |
UA library record |
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Open Access |
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Notes |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:107610 |
Serial |
7723 |
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Author |
Pallot-Frossard, I.; Van Grieken, R.; Godoi, R.; Kontozova, V.; et al. |
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| |
Title |
Les conclusions du programme européen Vidrio sur la protection des vitraux par verrière extérieure |
Type |
A3 Journal article |
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Year |
2007 |
Publication |
Monumental: revue scientifique et technique |
Abbreviated Journal |
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| |
Volume |
|
Issue |
2 |
Pages |
113-123 |
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Keywords |
A3 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1168-4534 |
ISBN |
|
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Notes |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:83278 |
Serial |
7724 |
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Author |
De Beule, C. |
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| |
Title |
Confined quantum systems in topological insulator heterostructures |
Type |
Doctoral thesis |
| |
Year |
2017 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
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Pages |
141 p. |
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| |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
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Notes |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:147217 |
Serial |
7725 |
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Author |
De Cocker, P.; Bessiere, Y.; Hernandez-Raquet, G.; Sun, X.Y.; Mozo, I.; Barrillon, B.; Gaval, G.; Caligaris, M.; Martin Ruel, S.; Vlaeminck, S.E.; Sperandio, M. |
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| |
Title |
Cool conditions for mainstream anammox applications : short and long term temperature effects |
Type |
P3 Proceeding |
| |
Year |
2017 |
Publication |
|
Abbreviated Journal |
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| |
Volume |
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Issue |
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Pages |
3 p.
T2 - 5th IWA Benelux Young Water Professional |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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| |
Notes |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:151117 |
Serial |
7732 |
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| Permanent link to this record |
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| |
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Author |
de Broe, M.E.; van de Vijver, F.L.; Bekaert, A.B.; d'Haese, P.; Paulus, G.J.; Visser, W.J.; Van Grieken, R.; de Wolff, F.A.; Verbueken, A.H. |
|
| |
Title |
Correlation of serum aluminium values with tissue aluminium concentration |
Type |
A1 Journal article |
| |
Year |
1984 |
Publication |
Contributions to nephrology |
Abbreviated Journal |
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| |
Volume |
38 |
Issue |
|
Pages |
37-46 |
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| |
Keywords |
A1 Journal article; Pharmacology. Therapy; Pathophysiology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP) |
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Abstract |
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Series Issue |
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Edition |
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ISSN |
0302-5144 |
ISBN |
|
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:116703 |
Serial |
7735 |
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| |
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Author |
Verstraelen, H. |
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| |
Title |
Corrosion in ballast tanks on board of merchant vessels : study of the relation between steel quality and corrosion |
Type |
Doctoral thesis |
| |
Year |
2013 |
Publication |
|
Abbreviated Journal |
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| |
Volume |
|
Issue |
|
Pages |
172 p. |
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| |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
|
ISBN |
978-90-5718-278-5 |
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| |
Notes |
|
Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:112176 |
Serial |
7737 |
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Author |
Mmari, A.G.; Potgieter-Vermaak, S.S.; Uiso, C.B.S.; Makundi, I.N.; Potgieter, J.H.; Van Grieken, R. |
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| |
Title |
Corrosive marine atmosphere investigations in Tanzania: exposure sites and preliminary results |
Type |
A3 Journal article |
| |
Year |
2007 |
Publication |
Newsletter of the International Global Atmospheric Chemistry Project |
Abbreviated Journal |
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| |
Volume |
|
Issue |
36 |
Pages |
13-18 |
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| |
Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Series Issue |
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Edition |
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ISBN |
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|
Open Access |
|
|
| |
Notes |
|
Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:65012 |
Serial |
7739 |
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| Permanent link to this record |
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| |
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Author |
Van Grieken, R.; Injuk, J. |
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| |
Title |
Current applications of XRF and micro-XRF techniques in environmental and industrial fields |
Type |
H3 Book chapter |
| |
Year |
1999 |
Publication |
|
Abbreviated Journal |
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|
| |
Volume |
|
Issue |
|
Pages |
29-38
T2 - Industrial and environmental applicatio |
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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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Notes |
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Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:27600 |
Serial |
7745 |
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| |
|
Author |
Van den Akker, S.; Bormans, P.; Peeters, H.; Gielis, J.; Prinsen, E. |
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| |
Title |
Cytokinin dynamics in cell suspension cultures of Bambusa balcooa Roxburgh using UPLC-ESI/MS/MS |
Type |
H3 Book chapter |
| |
Year |
2012 |
Publication |
|
Abbreviated Journal |
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|
| |
Volume |
|
Issue |
|
Pages |
539-547
T2 - Proceedings of the 9th World Bamboo C |
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| |
Keywords |
H3 Book chapter; Engineering sciences. Technology; Integrated Molecular Plant Physiology Research (IMPRES); Sustainable Energy, Air and Water Technology (DuEL) |
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| |
Abstract |
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Address |
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| |
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Edition |
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| |
ISSN |
|
ISBN |
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UA library record |
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| |
Impact Factor |
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Times cited |
|
Open Access |
|
|
| |
Notes |
|
Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:97754 |
Serial |
7750 |
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| Permanent link to this record |
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| |
|
Author |
Saiz-Jimenez, C.; Brimblecombe, P.; Camuffo, D.; Lefèvre, R.-A.; Van Grieken, R. |
|
| |
Title |
Damages caused to European monuments by air pollution: assessment and preventive measures |
Type |
H3 Book chapter |
| |
Year |
2004 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
91-109
T2 - Air pollution and cultural heritage / |
|
| |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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| |
Abstract |
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| |
Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
|
ISBN |
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Additional Links |
UA library record |
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| |
Impact Factor |
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Times cited |
|
Open Access |
|
|
| |
Notes |
|
Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:48939 |
Serial |
7753 |
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| Permanent link to this record |
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| |
|
Author |
Grubova, I.Y. |
|
| |
Title |
Density functional theory study of interface interactions in hydroxyapatite/rutile composites for biomedical applications |
Type |
Doctoral thesis |
| |
Year |
2018 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
251 p. |
|
| |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
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| |
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Series Issue |
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Edition |
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ISSN |
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ISBN |
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Additional Links |
UA library record |
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|
Open Access |
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|
| |
Notes |
|
Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:158087 |
Serial |
7760 |
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| Permanent link to this record |
| |
|
| |
|
Author |
van Walsem, J. |
|
| |
Title |
Design and optimization of a photocatalytic reactor for air purification in ventilation systems |
Type |
Doctoral thesis |
| |
Year |
2019 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
158 p. |
|
| |
Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
|
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Abstract |
Photocatalysis has been labeled for decades as a promising technique for air purification. The principle seems straightforward and requires a photocatalyst that is immobilized on a substrate, and one or more UV sources to activate the photocatalyst. No waste products are produced, the reactions occur in mild conditions and the supplies are relatively cheap. Yet it seems that the commercialization of photocatalytic systems does not break through on the global market. The aim of this thesis is to identify and tackle the bottlenecks that impede commercialization from an application-oriented approach. The problem of indoor air pollution is enhanced by the fact that people spend more and more time indoors and that ventilation is kept to a minimum as an energy-saving measure. This inevitably leads to an accumulation of volatile organic compounds (VOCs) that are emitted by e.g. building materials, paint and furniture. Human exposure to VOCs is directly related to the sick building syndrome leading to complaints such as headache, fatigue, dizziness and lack of concentration. In addition, exposure to VOCs is related to serious long-term health effects such as cancer or respiratory diseases. Therefore, significant research efforts are focused on advanced indoor air purification methods. Integration or retrofitting of a photocatalytic (PCO) air purifying unit into heating, ventilation and air conditioning (HVAC) equipment has been chosen as an interesting approach. As a starting point of this thesis, the operational conditions of a ventilation system were mapped. These systems are characterized by high flow rates and the necessity of minimal pressure losses. Pressure losses increase the energy demand and can lead to failure of the ventilation fan and thereby undermine the proper functioning of the ventilation system. A suitable substrate must allow the contaminated air to pass through with a minimal pressure drop, allow sufficient contact time between VOC and photocatalyst, have a large surface area available for coating with excellent adhesion, and be transparent to UV light. Therefore, the permeability and the available exposed surface were selected as main selection criteria. After a thorough quantitative analysis of potential substrates, borosilicate glass tubes were selected. Glass tubes can easily be stacked to constitute a transparent monolithic multi-tube reactor, with their length parallel to the air flow in order to minimize the pressure drop. Moreover, borosilicate glass is relatively inexpensive and has excellent UV-A light transmitting properties. Based on a literature study, a sol-gel coating procedure was selected that is extremely suitable for coating glass substrates. The next step was to optimize the amount of P25 (commercial titanium dioxide) in the photocatalytic sol-gel coating for its application. More P25 in the sol-gel coating results in a higher adsorption capacity and consequently a higher photocatalytic activity, but greatly reduces the transparency of the coating. After an in-depth study, the concentration of 10 g L-1 P25 was selected as the most feasible for multi-tube reactors. Since the operation of photocatalytic reactors is based on a complex interaction of physical and chemical processes, mathematical models were developed, supported by experimental data, that include all these phenomena as a tool for reactor design and optimization. By making use of such models, time-consuming and expensive experimental research can be minimized. However, the experimental validation of models is of utmost importance to prove its reliability and accuracy. Intrinsic kinetic parameters provide the fundamentals for these models as they describe the photocatalytic reaction rate, independent of fluid dynamics, reactor geometry and radiation field. In this work they were estimated by means of a Computational Fluid Dynamics (CFD) study, based on FTIR (Fourier-transform infrared spectroscopy) experiments with a lab scale multi-tube reactor. The kinetic parameters were validated by an alternative analytic approach, emphasizing the accuracy and reliability of the simulations. Finally, the aforementioned CFD approach, based on the simultaneously modelling of airflow, mass transfer, UV light irradiation and photocatalytic reactions, was used to obtain insights for the light source configuration in upscaled multi-tube reactors. After taking all these insights and some practical implications into account, a final upscaled multi-tube reactor design was proposed and converted into a first built prototype. Subsequently, it was evaluated according the CEN-EN-16486-1 standard for VOC removal by the external scientific research center ‘CERTECH’. The scientific results, regarding the mineralization of the VOCs and photocatalytic efficiency of the reactor, demonstrated the feasibility for indoor air purification by the upscaled multi-tube reactor and the possible implementation in ventilation systems. |
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UA @ admin @ c:irua:160205 |
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Voordeckers, D. |
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Design to breathe : understanding and altering wind patterns in street canyons to reduce human exposure to air pollution |
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Doctoral thesis |
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2023 |
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xxii, 303 p. |
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Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL); Research Group for Urban Development; Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS) |
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Air pollution is proclaimed by the World Health Organiaation (WHO) as the biggest environmental threat to human health. Street canyons, or urban roads flanked by a continuous row of high buildings on both sides, are perceived as typical bottleneck areas for air quality due to their lack of natural ventilation. This doctoral thesis aims to integrate expert knowledge on in-canyon flow fields and pollution dispersion in street canyons from the specialized field of (bio)engineering into the field of urban planning and vice versa. In Chapter 1, a Geospatial Information System (GIS) method was developed to detect exposure zones and hotspot street canyons. A critical combination between aspect ratio (AR > 0.65) and traffic volume (TVmax > 300) was detected and subsequently used to detect hotspot street canyons in three major European cities (Antwerp, London and Paris). Chapter 2 focusses on acquiring in-depth knowledge on flow and concentration fields in street canyons by conducting an extensive literature review on over 200 studies and translates this knowledge into nineteen guidelines and eleven spatial tools, comprised in a toolbox for urban planning. Subsequently, computational fluid dynamics (CFD) was used into a research trough design process (Chapter 4) to illustrate how the design tools can be applied to a specific case study (Belgiëlei, Antwerp). Alternations to traffic lanes (traffic lane reduction and lateral displacement) combined with low boundary walls (LBWs), were found to reduce NO2 levels in the entire pedestrian area up to – 3.6 % and peak pollutions were reduced by -8 %. A maximum NO2 reduction was reached by combining a traffic lane displacement with hedges, adjustments to the tree planting pattern and an increased ground-level permeability, leading to reductions up to – 4.5 % in the pedestrian areas. In conclusion, urban design was found to be a valuable tool to enhance the effect of emission reduction strategies and draw in-canyon concentrations closer to the value of the background concentration. However, the background concentration seemed to dominate the efficiency of the urban design interventions and therefore, additional measures should be taken to reduce background pollution levels. This dissertation aims to contribute to the awareness of air pollution in street canyons, as well as support local governments in taking action by delivering spatial tools and guidelines applicable for urban planning and represents a framework for the dissemination of expert information on air quality in street canyons to the field of urban planning. |
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UA @ admin @ c:irua:196399 |
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Otten, P.; Rajsic, S.; Van Grieken, R. |
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Detection of ammomium compounds at the single particle level |
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P3 Proceeding |
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P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA @ admin @ c:irua:117520 |
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