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Author |
Kashiwar, A. |
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Title |
TEM investigations of deformation mechanisms in nanocrystalline metals and multilayered composites |
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Doctoral thesis |
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2022 |
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xvi, 129 p. |
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Doctoral thesis; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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In the last few decades, nanostructuring has driven significant attention towards the development of novel metallic materials with advanced mechanical properties. Nanocrystalline (nc) metals are a class of nanostructured materials with grain sizes smaller than about 100 nm. These exhibit outstanding mechanical strength and fatigue properties compared to their coarse-grained (cg) counterparts. These are promising candidates for application as structural or functional materials. Nc metals in the form of thin films are employed as hard coatings on bulk components, structural components, and conductive layers in various micro-/nanoscale devices. These structural components and devices are often subjected to cyclic stresses or fatigue loading. Under these cyclic stresses, nc metals tend to exhibit the Bauschinger effect (BE). The strength loss during the BE is of great importance concerning the strength-ductility trade-off in nc metals. Furthermore, contact surfaces of the engineering components in service often undergo relative motion and are subject to both friction and wear. These extreme loading conditions demand nc metals with tailored interfacial characteristics for improved tribological performance. Aiming at ensuring high reliability and mechanical robustness for optimum performance of these components, there has been a strong motivation for understanding the mechanical properties and governing deformation mechanisms in nc metallic materials. This thesis aimed at in-depth investigation of microstructures at micro-/nanoscales using state-of-the-art in situ and ex situ transmission electron microscopy (TEM) to develop a closer link between the deformation structure and underlying deformation mechanisms in some nc metallic materials. The thesis has primarily focused on the in situ TEM nanomechanics of the BE and rotational deformation of grains in nc palladium thin films. A sputtered thin film of nc Pd was deformed inside TEM by cyclic loading-unloading experiments and the evolving microstructure was studied in real-time under different TEM imaging modes. The stress-strain response of the film exhibited a characteristic non-linear unloading behavior confirming the BE in the film. The corresponding bright-field TEM imaging revealed evidence of partially reversible dislocation activity. Towards a quantitative understanding of the deformation structure in real-time, in situ nanomechanical testing was coupled with precession-assisted automated crystal orientation mapping in scanning TEM (ACOM-STEM). Global ACOM-STEM analysis offered crystal orientation of a large number of grains at different states of deformation and confirmed partially reversible rotations of nanosized grains fitting to the observed BE during loading and unloading. Analysis of intragranular rotations showed substantial changes in the sub-structure within most of these grains indicating a dominant role of dislocation-based processes in driving these rotations. Globally, an unusually random evolution of texture was seen that demonstrated the influence of deformation heterogeneity and grain interactions on the resulting texture characteristics in nc metals. In the quest of understanding the grain interactions, local investigations based on annular dark-field STEM imaging during loading-unloading showed reversible changes in the contrast of grains with sets of adjoining grains exhibiting a unique cooperative rotation. Local analysis of the density of geometrically necessary dislocations (GNDs) showed the formation of dislocation pile-up at grain boundaries due to the generation of back-stresses during unloading. Critical observations of the evolution of GND density offered greater insights into the mechanism of cooperative grain rotations and these rotations were related to grain structure and grain boundary characteristics. In addition to understanding the influence of grain structure and grain boundaries, the thesis has further investigated the role of heterointerfaces in sputtered Au-Cu and Cu-Cr nanocrystalline multilayered composites (NMCs) deformed under cyclic sliding contact. The microstructural evolution in the NMCs was investigated at different deformation states by classical TEM imaging, ACOM-STEM as well as energy-filtered TEM (EFTEM). Au-Cu NMC with an initial high density of twin boundaries deformed by stress-driven detwinning with a concurrent change in grain structure in both Au and Cu. The formation of a vortex structure was observed due to plastic flow instabilities at Au-Cu interfaces that led to codeformation and mechanical intermixing. Cu-Cr NMC showed a preferential grain growth in Cu layers whereas no noticeable change in the grain sizes was seen in Cr layers. The phase maps revealed sharp interfaces between Cu and Cr layers indicating no intermixing between the immiscible phases. EFTEM results exposed the cracking processes in Cr layers with a concurrent migration of Cu in the cracks. Overall, the thesis has attempted to analyze the competing deformation processes and relate these with the microstructural heterogeneity in terms of grain structure and GB and interfacial characteristics in nc metallic materials. |
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UA @ admin @ c:irua:189013 |
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7343 |
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Author |
Larraín, M. |
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Title |
Recycling of plastics : linking technical, economic and policy aspects of post-consumer plastic packaging |
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Doctoral thesis |
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2022 |
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x, 165 p. |
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Doctoral thesis; Engineering sciences. Technology; Engineering Management (ENM); Intelligence in PRocesses, Advanced Catalysts and Solvents (iPRACS) |
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The rise in plastic packaging production and disposal has encouraged the progress of recycling technologies and aroused policy discussion on how to increase recycling rates. However, the effect that these policy instruments will have on the development of the different recycling technologies has not been studied holistically yet. This dissertation explores how new and existing technologies will behave under the market and policy conditions observed at present and after the implementation of the policy instruments that are under discussion. The technologies that are analyzed in this thesis are mechanical recycling and thermochemical recycling of post-consumer polyolefin waste. Using a techno-economic assessment that takes into account the physical properties of the different plastic fractions and their contamination level, the study shows that both mechanical and thermochemical recycling can be profitable if oil prices remain steady or increase. Specifically, mechanical recycling will show better results than thermochemical recycling for plastic fractions with low contamination levels. On the contrary, thermochemical recycling is more profitable for fractions with a higher contamination level from which high-quality products cannot be obtained with mechanical recycling, such as PE films. Moreover, it demonstrates that besides the oil prices and sorted waste prices, waste purity and the plant capacity are the variables that influence more the net present value of thermochemical recycling and the labor cost and waste purity the ones of mechanical recycling. The thesis explores the dynamics between the stakeholders of the circular value chain and predicts the recycling rates under the implementation of several policy instruments. This is done with a supply chain equilibrium model, based on the extended producer responsibility scheme implemented in Flanders, that uses as an input the cost structures of mechanical and thermochemical recycling obtained from the techno-economic assessments. Direct interventions like recycled content standards, can decouple the recycling industry from the oil market, but in the long term, they may not present incentives to achieve recycling levels beyond the targeted amounts and thus limit technological innovation. On the contrary, economic interventions such as taxes, create economic incentives for recycling and allow fund collection from the government but leave the recycled levels dependent on external markets. Results also show that higher recycling rates does not necessarily mean better environmental performance. Therefore, when designing circular economy policies, policymakers should carefully analyze whether the intention is to increase circularity or improve the sustainability of the value chains. |
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UA @ admin @ c:irua:191730 |
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7366 |
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Tschulkow, M. |
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Title |
A techno-environmental economic assessment of a lignin-first biorefinery : a dynamic and prospective framework for emerging technologies |
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Doctoral thesis |
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2022 |
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175 p. |
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Doctoral thesis; Engineering sciences. Technology; Engineering Management (ENM) |
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Novel emerging biorefinery technologies have gained interest and have the potential to tackle several sustainability challenges in our society. A lignin-first biorefinery process – reductive catalytic fractionation (RCF) – is currently under development with the aim to process wood into high-value end-products that replace highly polluting fossil oil-based products. However, such emerging technologies are not matured yet, holding a certain degree of technological, economic, and environmental uncertainty. Hence, an appropriate assessment method is required to assess techno-economic feasibility and environmental impacts of emerging uncertain technologies (e.g lignin-first RCF process). This dissertation aims to develop an integrated techno-environmental economic assessment framework to assess emerging technologies dynamically and prospectively from economic and environmental points of view. First, a techno-economic assessment (TEA) is performed to assess the economic feasibility and the most influential economic and technological parameters of the lignin-first RCF biorefinery taking the whole wood value chain into account. By making the relations across the wood value chain, the scale of the biorefinery, wood species, and output prices highly determine the economic feasibility. The economic feasibility can be reached by a sufficient capacity level which depends on wood species-specific conditions. Also, waste wood proves to be the most profitable feedstock in comparison to virgin wood. Second, an analytical real options analysis (ROA) is performed taking two correlated market uncertainties and the value of flexibility into account to identify the optimal investment decision in an RCF biorefinery. Two different investment options, separated and united investments in harvesting equipment and RCF biorefinery, are analyzed. In both scenarios, market uncertainty postpones the investment. When both investment decisions are united, the probability of investment increases in comparison to separated investments. The study reveals that RCF has the potential to stimulate investments within the wood value chain. Third, a consequential life cycle assessment (LCA) is performed to assess the carbon emissions and the environmental consequences of the lignin-first RCF process and its products. The study reveals that at the current stage RCF products have higher carbon emissions than their alternative counterparts. Several options to improve the environmental performance are discussed such as different RCF technology configurations, targeting different RCF products with the ability to replace higher polluting alternative counterparts on the markets. Other discussion points such as transportation type and the distance, (in-)direct land-use change, the use stage and disposal stages implications, and a more comprehensive environmental view of the RCF products, show the potential to improve the environmental performance of the RCF technology. Overall, the study shows that the RCF process can be environmentally desirable if the appropriate RCF configuration and products are chosen. Finally, the above-mentioned methods – techno-economic assessment, analytical real options analysis, and consequential life cycle assessment – are uniquely integrated within the newly developed integrated assessment framework. The framework has the aim to complement the shortcomings and combine the advantages of all three methods. The framework assesses emerging technologies to give predictive insights about the time-specific economic and environmental performance under the newly developed three threshold conditions: technological readiness, economic feasibility, and environmental desirability. The developed integrated assessment framework assesses dynamically and prospectively the RCF biorefinery implementation under Belgian conditions. It reveals that the economic feasibility increases and carbon emissions decrease over time. The RCF biorefinery fulfills all three threshold conditions – technological readiness, economic feasibility, and environmental desirability – consecutively. The newly developed integrated assessment framework offers decision support to several stakeholders of emerging technologies starting from low technology readiness level (TRL). Practitioners such as the technology developers, researchers, and policymakers can use the framework to evaluate emerging technologies that deal with high levels of technological, economic, and environmental uncertainties. The framework assesses emerging technologies on a detailed level to give decision-makers in-depth insights into the intertwined nature of the technological, economic, and environmental dimensions. It offers insights into the expected time-specific economic and environmental performances, potential, and challenges of the emerging technology to further improve the technology and direct R&Ds along the right path. |
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Most recent IF: NA |
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UA @ admin @ c:irua:188968 |
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7369 |
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Author |
Reggers, C.; Van Grieken, R. |
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Title |
2,2′-Diaminodiethylamine cellulose powder for trace metal preconcentrations from water |
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A3 Journal article |
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Year |
1984 |
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Fresenius' Zeitschrift für analytische Chemie |
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317 |
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5 |
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520-526 |
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A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Cellulose powder with 2,2′-diaminodiethylamine (DEN) functional groups exhibits efficient complexation of transition metal cations. Collection yields above 85 % are obtained up to a chelation capacity of 1.5 meq per gram. Since a good collection is obtained for a pH up from 5, no pH adjustments have to be made for natural water samples. The cellulose-DEN powder is insensitive to abundant substances like alkali and alkaline earth ions, and humic matter. Some cations can be eluted efficiently in a small volume of HNO3. Blank concentration levels from the cellulose-DEN powder are reported. |
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2004-11-17 |
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0016-1152 |
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no |
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UA @ admin @ c:irua:116640 |
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7383 |
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Gielis, J.; Tavkelidze, I.; Ricci, P.E. |
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About “bulky” links, generated by generalized Möbius-Listing bodies |
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H3 Book chapter |
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2011 |
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115-128
T2 - Proceedings of the International Conf |
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H3 Book chapter; Sustainable Energy, Air and Water Technology (DuEL) |
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978-9941-0-3727-6 |
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UA @ admin @ c:irua:97753 |
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7403 |
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Gielis, J.; Tavkhelidze, I.; Ricci, P.E. |
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About “bulky” links generated by generalized Möbius-Listing bodies GML2n |
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A2 Journal article |
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2013 |
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Journal of mathematical sciences |
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193 |
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3 |
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449-460 |
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A2 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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In this paper, we consider the bulky knots and bulky links, which appear after cutting of a Generalized MöbiusListing GMLn2 body (with the radial cross section a convex plane 2-symmetric figure with two vertices) along a different Generalized MöbiusListing surfaces GMLn2 situated in it. The aim of this report is to investigate the number and geometric structure of the independent objects that appear after such a cutting process of GMLn2 bodies. In most cases we are able to count the indices of the resulting mathematical objects according to the known classification for the standard knots and links. |
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2013-08-03 |
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1072-3374; 1573-8795 |
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UA @ admin @ c:irua:110953 |
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7404 |
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Tavkhelidze, I.; Gielis, J.; Pinelas, S. |
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About some methods of analytic representation and classification of a wide set of geometric figures with “complex” configuration |
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A3 Journal article |
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2020 |
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Sn – 1512-0066 |
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34 |
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81-84 |
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A3 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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UA @ admin @ c:irua:174475 |
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7406 |
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Tavkhelidze, I.; Gielis, J.; Pinelas, S. |
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About some methods of analytic representation and classification of a wide set of geometric figures with “complex” configuration |
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2020 |
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347-359
T2 - Differential and difference equations |
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H1 Book chapter; Sustainable Energy, Air and Water Technology (DuEL) |
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2020-10-21 |
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978-3-030-56322-6 |
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UA @ admin @ c:irua:174479 |
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7407 |
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Legrand, S. |
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Advanced chemical imaging of artworks |
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Doctoral thesis |
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2021 |
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315 p. |
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Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Last century the field of heritage sciences expanded beyond imagination. The inventions of X-ray radiography and infrared reflectography allowed experts to investigate paintings below the surface as well. More recent developments led to the advent of the field of hyperspectral imaging, to which the advanced chemical imaging methods, used in this thesis work, belong. These techniques not only allow to identify the components present in artworks, but also to visualize their distribution over these objects. The resulting distribution maps permit a broader public to interpret the scientific data and to relate these results with the artwork itself. During this thesis work a range of flat artworks were investigated in a non-destructive manner using mainly two macroscopic imaging techniques: macroscopic X-ray fluorescence scanning and macroscopic Fourier transformed mid-infrared scanning in reflectance mode. The resulting images were sometimes supplemented with microscopic techniques on a minute selection of samples to fully understand the layer build-up, composition and distribution of these materials over the stratigraphy. Illuminated manuscripts pushed the interpretation of the macroscopic imaging techniques: due to the impossibility of sampling, all answers had to be obtained non-destructively. Documenting masterpieces such as the Ghent Altarpiece by means of chemical imaging techniques, helped the restoration team, assisted by the international commission to make the daring decision of manually removing the non-original paint layers. Scanning stained-glass windows allowed experts to document the panels, create situation reports, identify later infills and guide the restoration process in a more efficient manner. By initially applying non-destructive imaging techniques, many of the research/conservation questions could already be answered. Based on the resulting distribution maps, only a very limited amount of sampling was required to obtain a representative set to answer the remaining questions. In most cases the combination of multiple methods was necessary to fully understand the situation. A similar trend could be seen in the research field: the collaboration between divergent disciples was often required in order to explain all observations. In order to completely break through, the scanning speed of these techniques has to increase even more in order to cover an acceptable surface in one workday. Parallel with the operational speed, the (basic) data treatment should also be streamlined more in order to allow a broader user group to access the results. Once these two improvements are carried out, these techniques become accessible to a larger public. |
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Most recent IF: NA |
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UA @ admin @ c:irua:176342 |
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7420 |
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Koleleni, Y.I.A.; Van Grieken, R. |
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Aerosol composition as a function of particle size |
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A3 Journal article |
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1993 |
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Tanzanian journal of science |
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19 |
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49-61 |
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A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA @ admin @ c:irua:55572 |
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7423 |
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Van Grieken, R. |
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Aerosol composition studies using accelerator proton bombardment |
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P3 Proceeding |
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1974 |
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P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:117458 |
Serial |
7424 |
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Author |
Eltayeb, M.A.H.; Van Grieken, R.E.; Maenhaut, W.; Annegarn, H.A.J. |
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Title |
Aerosol-soil fractionation for Namib desert samples |
Type |
A3 Journal article |
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Year |
1992 |
Publication |
Journal of aersol science |
Abbreviated Journal |
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Volume |
23 |
Issue |
S1 |
Pages |
983-986 |
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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:2843 |
Serial |
7426 |
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Author |
Rojas, C.M.; Artaxo, P.; Van Grieken, R. |
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| |
Title |
Aerosols in Santiago de Chile : a study using receptor modeling with X-ray fluorescence and single particle analysis |
Type |
A1 Journal article |
| |
Year |
1990 |
Publication |
Atmospheric environment: part B : urban atmosphere |
Abbreviated Journal |
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Volume |
24 |
Issue |
2 |
Pages |
227-241 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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| |
Abstract |
Between 15 January and 26 February 1987, 51 fine and coarse mode aerosol samples were collected at the Universidad de Santiago de Chile Planetarium using a dichotomous sampler. The samples were analyzed by X-ray fluorescence for up to 17 elements (Mg, Al, Si, P, S, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br and Pb). Aerosol particles were individually studied by Electron Probe Microanalysis (EPMA) and Laser Microprobe Mass Analysis (LAMMA). The data set consisting of aerosol elemental concentrations and meteorological variables was subjected to Principal Factor Analysis (PFA), allowing the identification of six fine mode particle source classes (soil, industrial, sulfate particles, traffic, residual oil, wood-burnings), and five coarse mode particle source classes (soil, industrial, traffic, residual oil, sulfate particles). Both PFA solutions explained about 81 and 90% of the total variance in the data set, respectively. The regression of elemental mass concentrations on the Absolute Principal Factor Scores allowed the estimation of the contribution of the different source classes to the Santiago aerosol. Within the fine fraction, secondary SO42− particles were responsible for about 49% of the fine mode aerosol mass concentration, while 26, 13, 6.4 and 5.6% were attributed to wood-burning/car exhausts, residual oil combustion, soil dust/metallurgical, and soil dust/wood-burning releases, respectively. The coarse fraction source apportionment was mainly dominated by soil dust, accounting for 74% of the coarse mode aerosol mass concentration. A composite of soil dust and industrial release accounted for 13%; a composite of secondary sulfates contributed with 9%; a composite of soil dust and automotive emissions, and secondary sulfates were responsible for 4 and 0.03% of the coarse aerosol mass concentration, respectively. EPMA results are in satisfactory agreement with those from the bulk analysis and allowed the identification of eight particle types in both fine and coarse mode aerosols, pertaining to different source classes, namely soil, seaspray, secondary SO42−, metallurgical emissions and biomass burning release. EPMA also evidenced that one of the most abundant particle types corresponded to marine aerosol, having an average diameter of 0.7 μm for the fine mode and 2.2 μm for the coarse mode aerosol. LAMMA results indicate that, in fact, seaspray has been transported into the city of Santiago de Chile airshed, suffering several transformations and a sulfur enrichment. This analytical technique also provided evidence of the abundance of carbon-rich particles, which were not detected by either the bulk X-ray analysis or EPMA; they are probably due to fossil-fuel combustion releases. |
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2003-08-06 |
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ISSN |
0957-1272; 1878-2132 |
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Call Number |
UA @ admin @ c:irua:116456 |
Serial |
7427 |
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Author |
Meerburg, F.A.; Boon, N.; Van Winckel, T.; Pauwels, K.; Vlaeminck, S.E. |
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Title |
The age of wastewater mining : selection for sludge with a maximum capture potential for organics in a high-rate contact stabilization system |
Type |
P3 Proceeding |
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Year |
2015 |
Publication |
|
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
3 p.
T2 - IWA Resource Recovery Conference, 30 Aug |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151144 |
Serial |
7428 |
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Author |
Van Grieken, R. |
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| |
Title |
Air pollution and preventive conservation in some European museums |
Type |
P1 Proceeding |
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Year |
2014 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
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Pages |
19-26
T2 - Science, Technology and Cultural Herita |
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Keywords |
P1 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
978-1-138-02744-2 |
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no |
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Call Number |
UA @ admin @ c:irua:126671 |
Serial |
7430 |
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Author |
Costa Dantas, C.; Da Silveira Dantas, H.; Van 't dack, L.; Van Grieken, R. |
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| |
Title |
Analise de solos por meio de fluorescencia de raios-X nao-dispersiva |
Type |
A1 Journal article |
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Year |
1981 |
Publication |
Química nova |
Abbreviated Journal |
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Volume |
4 |
Issue |
|
Pages |
110-116 |
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| |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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|
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|
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| |
ISSN |
0100-4042; 1678-7064 |
ISBN |
|
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no |
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| |
Call Number |
UA @ admin @ c:irua:111435 |
Serial |
7438 |
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| Permanent link to this record |
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| |
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Author |
Trincavelli, J.C.; Van Grieken, R. |
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Title |
Analisis cuantitativo sin estandares de particulas individuales mediante microsonda de electrones |
Type |
H3 Book chapter |
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Year |
1996 |
Publication |
|
Abbreviated Journal |
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| |
Volume |
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Issue |
|
Pages |
273-278
T2 - Avances en analisis por tecnicas en r |
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| |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Notes |
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Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:14678 |
Serial |
7439 |
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| Permanent link to this record |
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| |
|
Author |
Van Grieken, R. |
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| |
Title |
Analyse van ferro-metalen door activering met 14 MeV neutronen |
Type |
MA3 Book as author |
| |
Year |
1973 |
Publication |
|
Abbreviated Journal |
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| |
Volume |
|
Issue |
|
Pages |
128 p. |
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| |
Keywords |
MA3 Book as author; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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| |
Call Number |
UA @ admin @ c:irua:117470 |
Serial |
7440 |
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Author |
Koleleni, Y.I.A.; Van Grieken, R. |
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| |
Title |
Analysis of biological materials from Tanzania by total reflection X-ray fluorescence (TXRF) analysis |
Type |
A3 Journal article |
| |
Year |
1990 |
Publication |
Tanzania journal of science |
Abbreviated Journal |
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| |
Volume |
16 |
Issue |
|
Pages |
143-157 |
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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:116934 |
Serial |
7442 |
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Author |
Ro, C.-U.; Oh, K.-Y.; Van Grieken, R.E. |
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Title |
Analysis of heterogeneous CaCO3-CaSO4 single particles using ultra-thin window EPMA |
Type |
P3 Proceeding |
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Year |
2000 |
Publication |
|
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Notes |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:34104 |
Serial |
7444 |
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Author |
van Malderen, H.; Van Grieken, R.; Khodzher, T.V.; Bufetov, N.S.; Koutsenogii, K.P. |
|
| |
Title |
Analysis of individual aerosol particles in Siberian region: provisional results |
Type |
A3 Journal article |
| |
Year |
1994 |
Publication |
Atmospheric and oceanic optics |
Abbreviated Journal |
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|
| |
Volume |
7 |
Issue |
|
Pages |
622-627 |
|
| |
Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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no |
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| |
Call Number |
UA @ admin @ c:irua:9515 |
Serial |
7445 |
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| Permanent link to this record |
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Author |
Ro, C.-U.; Osán, J.; Van Grieken, R. |
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| |
Title |
Analysis of individual environmental particles using ultra-thin window EPXMA |
Type |
P3 Proceeding |
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Year |
1998 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
|
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:55575 |
Serial |
7446 |
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| Permanent link to this record |
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| |
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Author |
Markowicz, A.; Raeymaekers, B.; Van Grieken, R.; Adams, F. |
|
| |
Title |
Analytical electron microscopy of single particles |
Type |
H3 Book chapter |
| |
Year |
1986 |
Publication |
|
Abbreviated Journal |
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Volume |
|
Issue |
|
Pages |
173-197
T2 - Physical and chemical characterizatio |
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| |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
no |
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| |
Call Number |
UA @ admin @ c:irua:117504 |
Serial |
7455 |
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| Permanent link to this record |
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| |
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Author |
Buczyńska, A.J. |
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| |
Title |
Analytical methodology for combined stable carbon isotope ratio and concentration measurement of polycyclic aromatic hydrocarbons in air particulate matter |
Type |
Doctoral thesis |
| |
Year |
2014 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
|
Pages |
186 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:120050 |
Serial |
7456 |
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| Permanent link to this record |
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Author |
Van Grieken, R.; Cardell, C.; Delalieux, F.; Eyckmans, K. |
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| |
Title |
Analytical methods to study atmospheric pollution and weathering of materials |
Type |
H3 Book chapter |
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Year |
2001 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
163-170
T2 - Sciences and technologies of the mate |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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| |
Notes |
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Approved |
no |
|
| |
Call Number |
UA @ admin @ c:irua:36382 |
Serial |
7457 |
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| Permanent link to this record |
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| |
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Author |
Van Grieken, R.; Vleugels, G.; Sweevers, E.; Dewolfs, R. |
|
| |
Title |
Analytical study of the weathering of building stones under field-exposure conditions |
Type |
A3 Journal article |
| |
Year |
1994 |
Publication |
European cultural heritage newsletter on research |
Abbreviated Journal |
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| |
Volume |
8 |
Issue |
|
Pages |
2-7 |
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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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ISSN |
1018-7111 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:116935 |
Serial |
7459 |
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| Permanent link to this record |
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Author |
Van Grieken, R.; Hoste, J. |
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Title |
Annotated bibliography on 14 MeV neutron activation analysis |
Type |
MA3 Book as author |
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Year |
1972 |
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Abbreviated Journal |
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293 p. |
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Keywords |
MA3 Book as author; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:117467 |
Serial |
7461 |
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Author |
Van Grieken, R. |
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Title |
Anorganische sporenanalyse voor milieuonderzoek |
Type |
P3 Proceeding |
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Year |
1986 |
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA library record |
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Approved |
no |
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Call Number |
UA @ admin @ c:irua:117507 |
Serial |
7463 |
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Author |
Truong, B.; Siegert, K.; Lin, A.; Miller, V.; Krebs, F.C. |
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Title |
Apical application of nanosecond-pulsed dielectric barrier discharge plasma causes the basolateral release of adenosine triphosphate as a damage-associated molecular pattern from polarized HaCaT cells |
Type |
A1 Journal article |
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Year |
2017 |
Publication |
Plasma medicine |
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Volume |
7 |
Issue |
2 |
Pages |
117-131 |
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Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
Promising biomedical uses for nonthermal plasma (NTP) in the fields of regenerative medicine, cancer therapy, and vaccine delivery involve the noninvasive application of uniform nonequilibrium plasma (including dielectric barrier discharge plasma) to living skin. Whereas most investigations have focused on achieving desired therapeutic outcomes, fewer studies have examined the mechanisms and pathways by which epithelial cells respond to NTP exposure. Using a transwell apical-basolateral-chambered system to culture the human keratinocyte HaCaT cell line, in vitro experiments were performed to demonstrate the effects of nanosecond-pulsed dielectric barrier discharge (nsDBD) plasma on polarized epithelial cell viability, monolayer permeability, intracellular oxidative stress, and the release of adenosine triphosphate (ATP). Application of nsDBD plasma at 60 Hz or below had minimal or no effect on HaCaT monolayer viability or permeability. nsDBD plasma exposure did, however, result in frequency-dependent reductions in intracellular glutathione (indicating direct induction of oxidative stress by nsDBD plasma) and increased extracellular ATP concentrations in the ba-solateral (subepithelial) media, which are indicators of cellular stress and an NTP-induced inflammatory response. These studies provide new insights into nsDBD plasma-induced inflammation and local innate immune responses initiated by polarized epithelial tissues. |
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2017-02-24 |
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no |
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Call Number |
UA @ admin @ c:irua:155656 |
Serial |
7465 |
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Author |
Grieten, E.; Storme, P.; Caen, J.; Schalm, O.; Schryvers, D. |
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Title |
Application of atmospheric plasma-jets for the conservation of cultural heritage |
Type |
P3 Proceeding |
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Year |
2015 |
Publication |
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Abbreviated Journal |
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Pages |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Electron microscopy for materials research (EMAT); Antwerp Cultural Heritage Sciences (ARCHES) |
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no |
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Call Number |
UA @ admin @ c:irua:149629 |
Serial |
7466 |
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