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Author |
Verreydt, G.; Annable, M.D.; Kaskassian, S.; van Keer, I.; Bronders, J.; Diels, L.; Vanderauwera, P. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Field demonstration and evaluation of the passive flux meter on a CAH groundwater plume |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
Environmental Science and Pollution Research |
Abbreviated Journal |
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Volume |
20 |
Issue |
7 |
Pages |
4621-4634 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL); Biochemical Wastewater Valorization & Engineering (BioWaVE) |
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Abstract |
This study comprises the first application of the Passive Flux Meter (PFM) for the measurement of chlorinated aliphatic hydrocarbon (CAH) mass fluxes and Darcy water fluxes in groundwater at a European field site. The PFM was originally developed and applied to measurements near source zones. The focus of the PFM is extended from near source to plume zones. For this purpose, 48 PFMs of 1.4 m length were constructed and installed in eight different monitoring wells in the source and plume zone of a CAH-contaminated field site located in France. The PFMs were retrieved, sampled, and analyzed after 3 to 11 weeks of exposure time, depending on the expected contaminant flux. PFM evaluation criteria include analytical, technical, and practical aspects as well as conditions and applicability. PFM flux data were compared with so-called traditional soil and groundwater concentration data obtained using active sampling methods. The PFMs deliver reasonable results for source as well as plume zones. The limiting factor in the PFM applicability is the exposure time together with the groundwater flux. Measured groundwater velocities at the field site range from 2 to 41 cm/day. Measured contaminant flux data raise up to 13 g/m(2)/day for perchloroethylene in the plume zone. Calculated PFM flux averaged concentration data and traditional concentration data were of similar magnitude for most wells. However, both datasets need to be compared with reservation because of the different sampling nature and time. Two important issues are the PFM tracer loss during installation/extraction and the deviation of the groundwater flow field when passing the monitoring well and PFM. The demonstration of the PFM at a CAH-contaminated field site in Europe confirmed the efficiency of the flux measurement technique for source as well as plume zones. The PFM can be applied without concerns in monitoring wells with European standards. The acquired flux data are of great value for the purpose of site characterization and mass discharge modeling, and can be used in combination with traditional soil and groundwater sampling methods. |
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Wos |
000321126700030 |
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2013-01-02 |
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ISSN |
0944-1344; 1614-7499 |
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Call Number |
UA @ admin @ c:irua:109817 |
Serial |
7965 |
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Author |
Gysels, K.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Field evaluation of a wind tunnel-impactor system for sampling ambient aerosols |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
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Volume |
30 |
Issue |
5 |
Pages |
639-650 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000079182300008 |
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2002-07-25 |
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0021-8502; 1879-1964 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:23180 |
Serial |
7966 |
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Author |
Van Grieken, R.; Stranger, M. |
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Title |
Fijn stof en pollutiegassen in de binnenlucht |
Type |
A2 Journal article |
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Year |
2006 |
Publication |
ARGUS milieumagazine |
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Volume |
4 |
Issue |
2 |
Pages |
18 |
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Keywords |
A2 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
1379-4957 |
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Call Number |
UA @ admin @ c:irua:58863 |
Serial |
7967 |
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Author |
Van Grieken, R.; Adams, F. |
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Title |
Filter absorption correction for X-ray fluorescence analysis of aerosol loaded filters |
Type |
P3 Proceeding |
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Year |
1976 |
Publication |
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Abbreviated Journal |
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Call Number |
UA @ admin @ c:irua:113635 |
Serial |
7968 |
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Author |
Potgieter-Vermaak, S.S.; Potgieter, J.H.; Worobiec, A.; Van Grieken, R.; Marjanovic, L.; Moeketsi, S. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Fingerprinting of South African ordinary Portland cements, cement blends and mortars for identification purposes: discrimination with starplots and PCA |
Type |
A1 Journal article |
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Year |
2007 |
Publication |
Cement and concrete research |
Abbreviated Journal |
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Volume |
37 |
Issue |
6 |
Pages |
834-843 |
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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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Wos |
000247613800003 |
Publication Date |
2007-02-26 |
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ISSN |
0008-8846 |
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UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:63909 |
Serial |
7970 |
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Author |
Clima, S.; McMitchell, S.R.C.; Florent, K.; Nyns, L.; Popovici, M.; Ronchi, N.; Di Piazza, L.; Van Houdt, J.; Pourtois, G. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
First-principles perspective on poling mechanisms and ferroelectric/antiferroelectric behavior of Hf1-xZrxO2 for FEFET applications |
Type |
P1 Proceeding |
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Year |
2018 |
Publication |
2018 Ieee International Electron Devices Meeting (iedm) |
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Keywords |
P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
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Abstract |
We investigate at the atomic level the most probable phase transformations under strain, that are responsible for the ferroelectric/ antiferroelectric behavior in Hf1-xZrxO2 materials. Four different crystalline phase transformations exhibit a polar/non-polar transition: monoclinic-to-orthorhombic requires a gliding strain tensor, orthorhombic-to-orthorhombic transformation does not need strain to polarize the material, whereas tetragonal-to-cubic cell compression and tetragonal-to-orthorhombic cell elongation destabilizes the non-polar tetragonal phase, facilitating the transition towards a polar atomic configuration, therefore changing the polarization-electric field loop from antiferroelectric to ferroelectric. Oxygen vacancies can reduce drastically the polarization reversal barriers. |
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000459882300073 |
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978-1-72811-987-8; 978-1-72811-987-8 |
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UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:158693 |
Serial |
7972 |
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Permanent link to this record |
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Author |
Van Grieken, R.; Injuk, J.; Otten, P.; Rojas, C.; van Malderen, H.; Laane, R. |
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Title |
Fluxes and sources of heavy metal inputs into the Southern Bight of the North Sea |
Type |
H3 Book chapter |
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Year |
1992 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
184-193
T2 - Industrial air pollution: assessment |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:2859 |
Serial |
7975 |
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Permanent link to this record |
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Author |
Van Grieken, R.E.; Adams, F.C. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Folding of aerosol loaded filters during X-ray fluorescence analysis |
Type |
A1 Journal article |
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Year |
1976 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
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Volume |
5 |
Issue |
2 |
Pages |
61-67 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Folding aerosol loaded filters in two with the loaded side inwards during the X-ray analysis not only reduces possible filter heterogeneity effects and improves sample protection, but also increases the sensitivity and renders filter paper absorption corrections simple and more accurate in many instances. It is shown that folding an aerosol loaded Whatman filter paper during Kα X-rays counting leads to an increased sensitivity for all elements up from calcium, scandium or titanium (depending on the sensitivity definition and on the aerosol load) and for all elements up from phosphorus, sulphur or chlorine in the case of the Nuclepore filter. Although the absorption by the filter, into which the aerosol penetrates to some extent, is always more important in the sandwich than in the usual geometry, the dependence of the absorption correction on the usually unknown average deposition depth is less pronounced. Assuming all the aerosol material to be collected at the very surface of the filter and hence being present in the centre of the sandwich to be analysed, leads to an extremely simple filter paper absorption correction which is less prone to uncertainties than more sophisticated corrections in the usual geometry requiring additional measurements. This is the case for all elements up from potassium on Whatman filters and up from phosphorus on Nuclepore filters. |
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A1976BM95300002 |
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2005-05-28 |
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ISSN |
0049-8246 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:116480 |
Serial |
7976 |
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Permanent link to this record |
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Author |
Coppens, J.; Meers, E.; Boon, N.; Buysse, J.; Vlaeminck, S.E. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Follow the N and P road : high-resolution nutrient flow analysis of the Flanders region as precursor for sustainable resource management |
Type |
A1 Journal article |
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Year |
2016 |
Publication |
Resources, conservation and recycling |
Abbreviated Journal |
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Volume |
115 |
Issue |
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Pages |
9-21 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Resource-efficient nutrient management is key to secure food production in the context of a growing global population, rising resource scarcity and increasing pressure on the environment. To map the potential towards increasing nutrient use efficiencies and reduce environmental losses, a high-resolution insight of the nitrogen (N) and phosphorus (P) nutrient streams is pivotal. In this study, a substance flow analysis for N and P is presented for the nutrient intensive region of Flanders (6,211,065 inhabitants) in Belgium for the year 2009. A set of 160 nutrient fluxes was quantified throughout 21 economic and environmental compartments, with a particular focus on 10 waste management processes. A total nutrient load of 20 kg N cap(-1) yr(-1) (ca. 73% to the air and 28% to surface waters) and 0.53 kg P cap(-1) yr(-1) (to surface waters) is emitted to the environment; with crop and livestock production as the main contributors (49% of N and 36% of P). The food supply chain revealed a fertilizer-to-consumer efficiency of 14% for N as well as for P, with important losses embedded in waste streams such as excess manure. Advanced manure and waste processing facilities nevertheless offer the opportunity for enhanced nutrient recycling to increase the nutrient use efficiencies and reduce the dependency of inorganic fertilizers. (C) 2016 Elsevier B.V. All rights reserved. |
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000384852500002 |
Publication Date |
2016-08-30 |
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ISSN |
0921-3449 |
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UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:137229 |
Serial |
7977 |
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Author |
Huyskens, C. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Fouling in submerged membrane bioreactors |
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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Pages |
198 p. |
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Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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978-90-5728-374-1 |
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UA library record |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:99492 |
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7980 |
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Author |
Caratelli, D.; Gielis, J.; Tavkhelidze, I.; Ricci, P.E. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Fourier-Hankel solution of the Robin problem for the Helmholtz equation in supershaped annular domains |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
Boundary value problems |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
253 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The Robin problem for the Helmholtz equation in normal-polar annuli is addressed by using a suitable Fourier-Hankel series technique. Attention is in particular focused on the wide class of domains whose boundaries are defined by the so-called superformula introduced by Gielis. A dedicated numerical procedure based on the computer algebra system Mathematica© is developed in order to validate the proposed methodology. In this way, highly accurate approximations of the solution, featuring properties similar to the classical ones, are obtained. |
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000340237600004 |
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2013-11-22 |
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ISSN |
1687-2762; 1687-2770 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:111558 |
Serial |
7981 |
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Permanent link to this record |
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Author |
Caratelli, D.; Gielis, J.; Ricci, P.E. |
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Title |
Fourier-like solution of the Dirichlet problem for the Laplace Equation in k-type Gielis domains |
Type |
A1 Journal article |
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Year |
2011 |
Publication |
Journal of pure and applied mathematics : advances and applications |
Abbreviated Journal |
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Volume |
5 |
Issue |
2 |
Pages |
99-111 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The interior and exterior Dirichlet problems for the Laplace equation in k-type Gielis domains are analytically addressed by using a suitable Fourier-like technique. A dedicated numerical procedure based on the computer-aided algebra tool Mathematica© is developed in order to validate the proposed approach. In this way, highly accurate approximations of the solution, featuring properties similar to the classical ones, are obtained. Computed results are found to be in good agreement with theoretical findings on Fourier series expansion presented by Carleson. |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:91090 |
Serial |
7982 |
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Permanent link to this record |
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Author |
Kindratenko, V.V.; van Espen, P.J.M.; Treiger, B.A.; Van Grieken, R.E. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Fractal dimensional classification of aerosol particles by computer-controlled scanning electron microscopy |
Type |
A1 Journal article |
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Year |
1994 |
Publication |
Environmental science and technology |
Abbreviated Journal |
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Volume |
28 |
Issue |
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Pages |
2197-2202 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Chemometrics (Mitac 3) |
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Abstract |
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Wos |
A1994PP82900033 |
Publication Date |
2007-05-30 |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0013-936x; 1520-5851 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:9497 |
Serial |
7983 |
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Permanent link to this record |
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Author |
Han, M.; De Clippeleir, H.; Al-Omari, A.; Vlaeminck, S.E.; Wett, B.; Murthy, S. |
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Title |
Free ammonia and/or temperature impact study on temperature-acclimated mainstream nitrification sludge |
Type |
P3 Proceeding |
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Year |
2016 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
3 p.
T2 - WEF/IWA Nutrient Removal and Recovery Co |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Additional Links |
UA library record |
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Open Access |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:151134 |
Serial |
7984 |
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Permanent link to this record |
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Author |
Anibas, C.; Schneidewind, U.; Vandersteen, G.; Joris, I.; Seuntjens, P.; Batelaan, O. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
From streambed temperature measurements to spatial-temporal flux quantification : using the LPML method to study groundwater-surface water interaction |
Type |
A1 Journal article |
|
Year |
2016 |
Publication |
Hydrological processes |
Abbreviated Journal |
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|
Volume |
30 |
Issue |
2 |
Pages |
203-216 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Knowledge on groundwater-surface water interaction and especially on exchange fluxes between streams and aquifers is an important prerequisite for the study of transport and fate of contaminants and nutrients in the hyporheic zone. One possibility to quantify groundwater-surface water exchange fluxes is by using heat as an environmlental tracer. Modern field equipment including multilevel temperature sticks and the novel open-source analysis tool LPML make this technique ever more attractive. The recently developed LPML method solves the one-dimensional fluid flow and heat transport equation by combining a local polynomial method with a maximum likelihood estimator. In this study, we apply the LPML method on field data to quantify the spatial and temporal variability of vertical fluxes and their uncertainties from temperature-time series measured in a Belgian lowland stream. Over several months, temperature data were collected with multilevel temperature sticks at the streambed top and at six depths for a small stream section. Long-term estimates show a range from gaining fluxes of -291 mm day(-1) to loosing fluxes of 12 mm day(-1); average seasonal fluxes ranged from -138 mm day(-1) in winter to -16 mm day(-1) in summer. With our analyses, we could determine a high spatial and temporal variability of vertical exchange fluxes for the investigated stream section. Such spatial and temporal variability should be taken into account in biogeochemical cycling of carbon, nutrients and metals and in fate analysis of contaminant plumes. In general, the stream section was gaining during most of the observation period. Two short-term high stream stage events, seemingly caused by blockage of the stream outlet, led to a change in flow direction from gaining to losing conditions. We also found more discharge occurring at the outer stream bank than at the inner one indicating a local flow-through system. With the conducted analyses, we were able to advance our understanding of the regional groundwater flow system. Copyright (C) 2015 John Wiley & Sons, Ltd. |
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Corporate Author |
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Wos |
000369164900004 |
Publication Date |
2015-06-24 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0885-6087 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:131587 |
Serial |
7986 |
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Permanent link to this record |
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Author |
Pinera, I.; Cruz, C.M.; Abreu, Y.; Leyva, A.; van Espen, P.; Diaz, A.; Cabal, A.E.; Van Remortel, N. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Gamma induced atom displacements in LYSO and LuYAP crystals as used in medical imaging applications |
Type |
A1 Journal article |
|
Year |
2015 |
Publication |
Interactions With Materials And Atoms |
Abbreviated Journal |
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Volume |
356 |
Issue |
|
Pages |
46-52 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Particle Physics Group; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The radiation damage, in terms of atom displacements, induced by gamma irradiation in LYSO and LuYAP crystals is presented. Sc-44, Na-22 and V-48 are used as gamma sources for this study. The energy of gammas from the electron positron annihilation processes (511 keV) is also included in the study. The atom displacements distributions inside each material are calculated following the Monte Carlo assisted Classical Method introduced by the authors. This procedure also allows to study the atom displacements in-depth distributions inside each crystal. The atom displacements damage in LYSO crystals is found to be higher than in LuYAP crystals, mainly provoked by the displacements of silicon and oxygen atoms. But the difference between atom displacements produced in LYSO and LuYAP decreases when more energetic sources are used. On the other hand, the correlation between the atom displacements and energy deposition in-depth distributions is excellent. The atom displacements to energy deposition ratio is found to increases with more energetic photon sources. LYSO crystals are then more liable to the atom displacements damage than LuYAP crystals. (C) 2015 Elsevier B.V. All rights reserved. |
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Corporate Author |
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Place of Publication |
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Editor |
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Language |
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Wos |
000356990400008 |
Publication Date |
2015-05-14 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0168-583x |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:127012 |
Serial |
7987 |
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Permanent link to this record |
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Author |
Van Grieken, R.; Eyckmans, K. |
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Title |
Geen vuiltje aan de Noordzeelucht: aërosolen kennen geen grenzen |
Type |
P3 Proceeding |
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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 |
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Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Address |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
|
ISBN |
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Additional Links |
UA library record |
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|
Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:36094 |
Serial |
7990 |
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Permanent link to this record |
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Author |
Godoi, R.H.M.; Hirata, P.Y.; Bitterncourt, A.V.L.; Godoi, A.F.L.; Potgieter-Vermaak, S.; Gatto Rotondo, G.; Van Grieken, R.; et al. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Geochemical assessment of a subtropical reservoir : a case study in Curitiba, Southern Brazil |
Type |
A1 Journal article |
|
Year |
2012 |
Publication |
Clean : soil, air, water |
Abbreviated Journal |
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|
Volume |
40 |
Issue |
4 |
Pages |
364-372 |
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|
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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|
Abstract |
Suspended particles and dissolved substances in water provide reactive surfaces, influence metabolic activity and contribute to the net sediment deposition. It therefore plays an important part in the ecology and quality of the water mass. The water quality in reservoirs is crucial and it is naturally maintained by flushing and sedimentation, which continuously remove phosphorus from the water. In some reservoirs, however, these removal processes are countered by recycling of ions which could play a key role to start and/or maintain the eutrophic state. The combination of macro-, trace- and microanalysis techniques can be useful to trace pollution sources through a chemical fingerprint, whether be during an acute environmental disaster or a long-term release of pollutants. The water quality and total metal content of reservoir sediments were assessed in a reservoir, situated in the capital of the Paraná State, in the South-Eastern part of Brazil. The goal of this paper was to determine the metal presence in the sediment and metal and ionic speciation in the Green River reservoir water. Water and bed sediment samples, collected from various sites during 2008 and 2009, were investigated using XRF, ICP-OES, ICP-MS, XRD and zeta potential measurements. Based on the results, the heavy metal concentration and chemical composition of the suspended matter in the water samples, as well as the sediment's chemical composition will be discussed. |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000302607800005 |
Publication Date |
2012-01-05 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
|
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|
ISSN |
1863-0650 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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|
Call Number |
UA @ admin @ c:irua:96973 |
Serial |
7993 |
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Permanent link to this record |
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Author |
Belmans, F.; Van Grieken, R.; Brügmann, L. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Geochemical characterization of recent sediments in the Baltic Sea by bulk and electron microprobe analysis |
Type |
A1 Journal article |
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Year |
1993 |
Publication |
Marine chemistry |
Abbreviated Journal |
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Volume |
42 |
Issue |
|
Pages |
223-236 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Corporate Author |
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Thesis |
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Place of Publication |
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Editor |
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Language |
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Wos |
A1993LK11300006 |
Publication Date |
2003-08-08 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0304-4203; 1872-7581 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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|
Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:6255 |
Serial |
7994 |
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Permanent link to this record |
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Author |
Bernard, P.C.; Van Grieken, R.E.; Brügmann, L. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Geochemistry of suspended matter from the baltic sea : 1 : results of individual particle characterization by automated electron microprobe |
Type |
A1 Journal article |
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Year |
1989 |
Publication |
Marine chemistry |
Abbreviated Journal |
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|
Volume |
26 |
Issue |
2 |
Pages |
155-177 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Automated electron probe X-ray microanalysis was used to characterize some 15 000 individual suspension particles from 50 samples of suspended matter collected from different depths at 18 stations throughout the Baltic Sea and the transient area to the North Sea. For each particle, 14 minor and major elements were determined and size information data were obtained. To process this huge amount of results, multivariate analysis techniques were invoked: the particles were classified into specific types and the abundance variations of these groups were studied. It appeared that 80% of all investigated particles contained mostly silicon, and seemed to consist of quartz, and K-rich and Fe-rich aluminosilicates. The abundance of BaSO4 particles averaged 5% throughout the Baltic Sea, but amounted to up to 44% at some stations. The abundance of the Fe-rich particles varied significantly with location and depth, and averaged ∼ 4%. They were often found to be associated with significant amounts of P. Both of these particle types and the Mn-rich particles are thought to be mainly authigenic. Calcium carbonate particles are more abundant towards the North Sea (which seems to act as a source). Principal component analysis of the data revealed that most of the compositional variability can be explained by differences between deep and surface waters and by the influences of inflowing North Sea waters. Additional information about the types and sources of the suspended matter in the Baltic Sea was gained from the comparison and correlation of the single particle results with different fractions of the bulk concentrations of elements such as Al, Ca, Mn, Fe, Zn and Ba. |
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Corporate Author |
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Wos |
A1989T986200005 |
Publication Date |
2003-08-08 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0304-4203; 1872-7581 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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|
Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:116699 |
Serial |
7995 |
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Permanent link to this record |
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Author |
Brügmann, L.; Bernard, P.C.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Geochemistry of suspended matter from the Baltic Sea: 2: results of bulk trace metal analysis by AAS |
Type |
A1 Journal article |
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Year |
1992 |
Publication |
Marine chemistry |
Abbreviated Journal |
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Volume |
38 |
Issue |
|
Pages |
303-323 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
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Address |
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Place of Publication |
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Wos |
A1992JE94400008 |
Publication Date |
2003-08-08 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0304-4203; 1872-7581 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:2836 |
Serial |
7996 |
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Permanent link to this record |
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Author |
Gielis, J. |
![find book details (via ISBN) isbn](img/isbn.gif)
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Title |
The geometrical beauty of plants |
Type |
MA3 Book as author |
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Year |
2017 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
229 p. |
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Keywords |
MA3 Book as author; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
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Address |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
|
Publication Date |
2017-06-01 |
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Series Editor |
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Series Title |
|
Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
|
ISBN |
978-94-6239-150-5; 978-94-6239-151-2 |
Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:144554 |
Serial |
7997 |
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Permanent link to this record |
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Author |
Lin, S.; Zhang, L.; Reddy, G.V.P.; Hui, C.; Gielis, J.; Ding, Y.; Shi, P. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
A geometrical model for testing bilateral symmetry of bamboo leaf with a simplified Gielis equation |
Type |
A1 Journal article |
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Year |
2016 |
Publication |
Ecology and evolution |
Abbreviated Journal |
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Volume |
6 |
Issue |
19 |
Pages |
6798-6806 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The size and shape of plant leaves change with growth, and an accurate description of leaf shape is crucial for describing plant morphogenesis and development. Bilateral symmetry, which has been widely observed but poorly examined, occurs in both dicot and monocot leaves, including all nominated bamboo species (approximately 1,300 species), of which at least 500 are found in China. Although there are apparent differences in leaf size among bamboo species due to genetic and environmental profiles, bamboo leaves have bilateral symmetry with parallel venation and appear similar across species. Here, we investigate whether the shape of bamboo leaves can be accurately described by a simplified Gielis equation, which consists of only two parameters (leaf length and shape) and produces a perfect bilateral shape. To test the applicability of this equation and the occurrence of bilateral symmetry, we first measured the leaf length of 42 bamboo species, examining >500 leaves per species. We then scanned 30 leaves per species that had approximately the same length as the median leaf length for that species. The leaf-shape data from scanned profiles were fitted to the simplified Gielis equation. Results confirmed that the equation fits the leaf-shape data extremely well, with the coefficients of determination being 0.995 on average. We further demonstrated the bilateral symmetry of bamboo leaves, with a clearly defined leaf-shape parameter of all 42 bamboo species investigated ranging from 0.02 to 0.1. This results in a simple and reliable tool for precise determination of bamboo species, with applications in forestry, ecology, and taxonomy. |
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Corporate Author |
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Place of Publication |
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Editor |
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Language |
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Wos |
000385626100003 |
Publication Date |
2016-09-02 |
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Series Editor |
|
Series Title |
|
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 |
2045-7758 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:144547 |
Serial |
7998 |
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Permanent link to this record |
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Author |
Van Grieken, R.; Speecke, A.; Hoste, J. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Geometry errors in 14 MeV neutron activation analysis |
Type |
A3 Journal article |
|
Year |
1973 |
Publication |
Journal of radioanalytical chemistry |
Abbreviated Journal |
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|
|
Volume |
13 |
Issue |
1 |
Pages |
225-233 |
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Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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|
Abstract |
The effects of inaccurate sample sizes and sample positioning on 14 MeV neutron activation analysis results are estimated for 30, 20 and 10 mm diameter targets. It appears that axial positioning is the most critical parameter and that using a larger tritium target will yield an overall improvement of the reproducibility. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
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Publication Date |
2006-10-11 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
|
|
|
ISSN |
0134-0719; 2064-2857 |
ISBN |
|
Additional Links |
UA library record |
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Impact Factor |
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Times cited |
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Open Access |
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Notes |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:116453 |
Serial |
7999 |
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Permanent link to this record |
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Author |
Van Grieken, R.E.; Johansson, T.B.; Akselsson, K.R.; Winchester, J.W.; Nelson, J.W.; Chapman, K.R. |
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Title |
Geophysical applicability of aerosol size distribution measurements using cascade impactors and proton-induced X-ray-emission |
Type |
A1 Journal article |
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Year |
1976 |
Publication |
Atmospheric environment : an international journal |
Abbreviated Journal |
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Volume |
10 |
Issue |
8 |
Pages |
571-576 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Proton Induced X-ray Emission, (PIXE), is capable of high precision analysis for trace element components of aerosol particle size fractions sampled by cascade impactor. A statistical evaluation of data quality has been carried out in order to distinguish between analytical uncertainties in the PIXE procedure, errors caused by cascade impactor performance and by other factors in the sampling procedure, and geophysical causes of differences in composition and particle size distributions of the elements in aerosols. Replicate analyses and simultaneous samplings taken in north Florida and St. Louis have been used for the data evaluation. In addition to the analytical error the sampling procedure contributes an error of ~ 10% to be added quadratically. The resulting precision is sufficient to evaluate the data in geophysical terms. This is illustrated by means of sample sets taken simultaneously in an urban, forest and coastal environment of the same region. |
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A1976BZ75500001 |
Publication Date |
2003-08-06 |
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ISSN |
1352-2310 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:113636 |
Serial |
8000 |
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Author |
Mabesoone, J.M.; Duarte, P.J.; Van Grieken, R.; Delgao, A.; Freire, E.M.P. |
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Title |
Geoquimica dos microclasticos da Bacio do Parnaiba |
Type |
H3 Book chapter |
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Year |
1985 |
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Volume |
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Issue |
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Pages |
30-31
T2 - Fanerozoico Nordestino : serie D |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA library record |
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Call Number |
UA @ admin @ c:irua:117502 |
Serial |
8001 |
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Author |
Roekens, E.; Van Grieken, R. |
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Title |
Gevolgen van luchtverontreiniging op historische gebouwen |
Type |
A2 Journal article |
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Year |
1987 |
Publication |
Ons erfdeel |
Abbreviated Journal |
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Volume |
30 |
Issue |
2 |
Pages |
361-366 |
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Keywords |
A2 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISSN |
0030-2651 |
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UA library record |
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Call Number |
UA @ admin @ c:irua:116776 |
Serial |
8003 |
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Author |
Mortier, S.T.F.C.; Van Hoey, S.; Cierkens, K.; Gernaey, K.V.; Seuntjens, P.; De Baets, B.; De Beer, T.; Nopens, I. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
A GLUE uncertainty analysis of a drying model of pharmaceutical granules |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
European journal of pharmaceutics and biopharmaceutics |
Abbreviated Journal |
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Volume |
85 |
Issue |
3:b |
Pages |
984-995 |
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Keywords |
A1 Journal article; Pharmacology. Therapy; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
A shift from batch processing towards continuous processing is of interest in the pharmaceutical industry. However, this transition requires detailed knowledge and process understanding of all consecutive unit operations in a continuous manufacturing line to design adequate control strategies. This can be facilitated by developing mechanistic models of the multi-phase systems in the process. Since modelling efforts only started recently in this field, uncertainties about the model predictions are generally neglected. However, model predictions have an inherent uncertainty (i.e. prediction uncertainty) originating from uncertainty in input data, model parameters, model structure, boundary conditions and software. In this paper, the model prediction uncertainty is evaluated for a model describing the continuous drying of single pharmaceutical wet granules in a six-segmented fluidized bed drying unit, which is part of the full continuous from-powder-to-tablet manufacturing line (Consigma (TM), GEA Pharma Systems). A validated model describing the drying behaviour of a single pharmaceutical granule in two consecutive phases is used. First of all, the effect of the assumptions at the particle level on the prediction uncertainty is assessed. Secondly, the paper focuses on the influence of the most sensitive parameters in the model. Finally, a combined analysis (particle level plus most sensitive parameters) is performed and discussed. To propagate the uncertainty originating from the parameter uncertainty to the model output, the Generalized Likelihood Uncertainty Estimation (GLUE) method is used. This method enables a modeller to incorporate the information obtained from the experimental data in the assessment of the uncertain model predictions and to find a balance between model performance and data precision. A detailed evaluation of the obtained uncertainty analysis results is made with respect to the model structure, interactions between parameters and uncertainty boundaries. (C) 2013 Elsevier B.V. All rights reserved. |
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000330200800019 |
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2013-03-29 |
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Edition |
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ISSN |
0939-6411 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:114876 |
Serial |
8005 |
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Permanent link to this record |
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Author |
Callebaut, D.K.; Makarovska, Y.; Tlatov |
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Title |
Gravitational energy of solar oscillations and climatic changes |
Type |
P1 Proceeding |
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Year |
2000 |
Publication |
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Abbreviated Journal |
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Volume |
463 |
Issue |
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Pages |
297-300
T2 - 1st Solar and Space Weather Euroconfe |
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Keywords |
P1 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The gravitational energy associated with variations in the radius of the Sun is huge: with a relative change of 1/2000 (the estimated difference between maximum and minimum solar activity) and taking only the convection zone to expand, corresponds to about 2 10(34)J, which is 1/10 of the total rotational energy of the Sun. Non-radial oscillations with a tiny nonlinearity can still yield energies comparable to or larger than the total magnetic energy of a full sunspot cycle or three or four orders more than the luminosity of the Sun, but that is not sufficient to account for the changes of the temperature on Earth. The expansion of the upper layers of the convection zone, however, may directly or indirectly affect the climate and the biological aspects on the Earth. Moreover this suits a qualitative explanation why the Sun expands during a minimum of the magnetic activity. |
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Wos |
000168300800040 |
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ISSN |
92-9092-693-7 |
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UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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Call Number |
UA @ admin @ c:irua:95767 |
Serial |
8006 |
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Author |
Bekshaev, A.; de Hoog, J.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Grazing-emission electron probe microanalysis of particles near the substrate edge |
Type |
A1 Journal article |
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Year |
2001 |
Publication |
Spectrochimica acta: part B : atomic spectroscopy |
Abbreviated Journal |
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Volume |
56 |
Issue |
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Pages |
2385-2395 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
000173118900005 |
Publication Date |
2002-07-25 |
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Edition |
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ISSN |
0584-8547; 1873-3565 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
no |
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Call Number |
UA @ admin @ c:irua:36384 |
Serial |
8007 |
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Permanent link to this record |