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Van Winckel, T.; De Clippeleir, H.; Mancell-Egala, A.; Rahman, A.; Wett, B.; Bott, C.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S. |
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Title |
Balancing flocs and granules by external selectors to increase capacity in high-rate activated sludge systems |
Type |
P3 Proceeding |
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Year |
2016 |
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Pages |
6 p.
T2 - WEFTEC.16, 24 - 28 September 2016, New O |
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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:151122 |
Serial |
7548 |
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Permanent link to this record |
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Author |
Ozbal, G.; Senger, R.T.; Sevik, C.; Sevincli, H. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Ballistic thermoelectric properties of monolayer semiconducting transition metal dichalcogenides and oxides |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
Physical review B |
Abbreviated Journal |
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Volume |
100 |
Issue |
8 |
Pages |
085415 |
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Keywords |
A1 Journal article; Condensed Matter Theory (CMT) |
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Abstract |
Combining first-principles calculations with Landauer-Mittiker formalism, ballistic thermoelectric transport properties of semiconducting two-dimensional transition metal dichalcogenides (TMDs) and oxides (TMOs) (namely MX2 with M = Cr, Mo, W, Ti, Zr, Hf; X = O, S, Se, Te) are investigated in their 2H and 1T phases. Having computed structural, as well as ballistic electronic and phononic transport properties for all structures, we report the thermoelectric properties of the semiconducting ones. We find that 2H phases of four of the studied structures have very promising thermoelectric properties, unlike their 1T phases. The maximum room temperature p-type thermoelectric figure of merit (ZT) of 1.57 is obtained for 2H-HfSe2, which can be as high as 3.30 at T = 800 K. Additionally, 2H-ZrSe2, 2H-ZrTe2, and 2H-HfS2 have considerable ZT values (both nand p-type), that are above 1 at room temperature. The 1T phases of Zr and Hf-based oxides possess relatively high power factors, however their high lattice thermal conductance values limit their ZT values to below 1 at room temperature. |
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000480389100007 |
Publication Date |
2019-08-12 |
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2469-9969; 2469-9950 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:193773 |
Serial |
7549 |
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Author |
Stroobants, N.; Dehairs, F.; Goeyens, L.; Vanderheijden, N.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Barite formation in the Southern Ocean water column |
Type |
A1 Journal article |
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Year |
1991 |
Publication |
Marine chemistry |
Abbreviated Journal |
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Volume |
35 |
Issue |
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Pages |
411-421 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1991GZ58500031 |
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2009-09-04 |
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0304-4203; 1872-7581 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:664 |
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7550 |
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Permanent link to this record |
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Author |
Semenov, M.Y.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Base cation fluxes in mountain landscapes of Lake Baikal southern shore |
Type |
A1 Journal article |
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Year |
2007 |
Publication |
Communications in soil science and plant analysis |
Abbreviated Journal |
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Volume |
38 |
Issue |
19-20 |
Pages |
2635-2646 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000251885800005 |
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2007-11-14 |
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0010-3624 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:65351 |
Serial |
7551 |
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Author |
van Loon, A.; Vandivere, A.; Delaney, J.K.; Dooley, K.A.; De Meyer, S.; Vanmeert, F.; Gonzalez, V.; Janssens, K.; Leonhardt, E.; Haswell, R.; de Groot, S.; D'Imporzano, P.; Davies, G.R. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Beauty is skin deep : the skin tones of Vermeer's Girl with a Pearl Earring |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
Heritage science |
Abbreviated Journal |
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Volume |
7 |
Issue |
1 |
Pages |
102 |
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Keywords |
A1 Journal article; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The soft modelling of the skin tones in Vermeer's Girl with a Pearl Earring (Mauritshuis) has been remarked upon by art historians, and is their main argument to date this painting to c. 1665. This paper describes the materials and techniques Vermeer used to accomplish the smooth flesh tones and facial features of the Girl, which were investigated as part of the 2018 Girl in the Spotlight research project. It combines macroscopic X-ray fluorescence imaging (MA-XRF), reflectance imaging spectroscopy (RIS), and 3D digital microscopy. Vermeer built up the face, beginning with distinct areas of light and dark. He then smoothly blended the final layers to create almost seamless transitions. The combination of advanced imaging techniques highlighted that Vermeer built the soft contour around her face by leaving a 'gap' between the background and the skin. It also revealed details that were otherwise not visible with the naked eye, such as the eyelashes. Macroscopic imaging was complemented by the study of paint cross-sections using: light microscopy, SEM-EDX, FIB-STEM, synchrotron radiation mu-XRPD and FTIR-ATR. Vermeer intentionally used different qualities or grades of lead white in the flesh paints, showing different hydrocerussite/cerussite ratios and particle sizes. Lead isotope analysis showed that the geographic source of lead, from which the different types of lead white were manufactured, was the same: the region of Peak District of Derbyshire, UK. Finally, cross-section analysis identified the formation of new lead species in the paints: lead soaps and palmierite (K2Pb(SO4)(2)), associated with the red lake. |
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000516736100001 |
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2019-12-16 |
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2050-7445 |
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UA library record; WoS full record; WoS citing articles |
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UA @ admin @ c:irua:167549 |
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7552 |
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Author |
Worobiec, A.; Potgieter-Vermaak, S.; Darchuk, L.; Vishnyakov, V.; Potgieter, H.; Van Grieken, R. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Behavior of semi-volatile particles under a laser and electron beam: influence on the quality of analytical results |
Type |
A1 Journal article |
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Year |
2010 |
Publication |
AIP conference proceedings |
Abbreviated Journal |
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Volume |
1267 |
Issue |
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Pages |
523-524 |
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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 |
000281210900279 |
Publication Date |
2010-08-05 |
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ISSN |
0094-243x |
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UA library record; WoS full record |
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Approved ![sorted by Approved field, ascending order (up)](img/sort_asc.gif) |
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UA @ admin @ c:irua:84573 |
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7553 |
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Author |
de Baerdemaeker, T.; Lemmens, B.; Dotremont, C.; Fret, J.; Roef, L.; Goiris, K.; Diels, L. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Benchmark study on algae harvesting with backwashable submerged flat panel membranes |
Type |
A1 Journal article |
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Year |
2013 |
Publication |
Bioresource technology |
Abbreviated Journal |
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Volume |
129 |
Issue |
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Pages |
582-591 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The feasibility of algae harvesting with submerged flat panel membranes was investigated as pre-concentration step prior to centrifugation. Polishing of the supernatant coming from the centrifuge was evaluated as well. The effect of membrane polymer (polyvinyl chloride [PVC], polyethersulfone polyvinyl-pyrollidone [PES-PVP], poly vinylidene fluoride [PVDF]), pore size (microfiltration [MF], ultrafiltration [UF]), algae cell concentrations and species were investigated at lab-scale. In addition, backwashing as fouling control was compared to standard relaxation. PVDF was the superior polymer, and UF showed better fouling resistance. Backwashing outperformed relaxation in fouling control. The backwashable membranes allowed up to 300% higher fluxes compared to commercial flat panel benchmark (PVC) membranes. Estimations on energy consumption for membrane filtration followed by centrifugation revealed relatively low values of 0.169 kW h/kg of dry weight of algae compared to 0.5 kW h/kg for algae harvesting via classical centrifuge alone. (C) 2012 Elsevier Ltd. All rights reserved. |
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000324566000079 |
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2012-11-08 |
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ISSN |
0960-8524 |
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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:111203 |
Serial |
7554 |
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Permanent link to this record |
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Author |
Jacobs, W.; Dubois, D.; Floren, E.; Aerts, D.; Goris, J.; Buczyńska, A.; Van Grieken, R. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Benzene concentrations on board chemical tankers |
Type |
A1 Journal article |
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Year |
2011 |
Publication |
WMU journal of maritime affairs |
Abbreviated Journal |
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Volume |
10 |
Issue |
1 |
Pages |
117-126 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
Maritime transport of benzene is regulated by the International Maritime Organisation (IMO). Two important guidelines for a ships crew in this matter are IMO circulars 1095 and 1220. The first one describes the minimum safety standards for ships carrying liquids in bulk containing benzene while circular 1220 deals with structural guidelines for new ships carrying liquids in bulk containing benzene, but also technical developments could help in improving safety and health protection on board chemical tankers carrying benzene in bulk. The aim of the present paper is to determine the benzene concentration in the working and living environment on board a modern chemical tanker carrying benzene in bulk, where all safety, technical and operational procedures described by IMO in the above-mentioned circulars are followed. During specific cargo operations, we measured the benzene concentrations on different locations on board by means of Radiello® passive diffusive samplers. Despite all measures taken, we found an important difference in benzene concentration between operations with a benzene cargo compared to operations without benzene on board, as well as inside and outside the accommodation. Moreover, even during discharge operations, where the emission is theoretically zero, we found an important increase in the benzene concentration. In addition, we found less favourable results for the engine room. |
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Wos |
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Publication Date |
2010-11-22 |
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Edition |
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ISSN |
1651-436x; 1654-1642 |
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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:89551 |
Serial |
7555 |
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Permanent link to this record |
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Author |
Blondiaux, E.; Bomon, J.; Smolen, M.; Kaval, N.; Lemière, F.; Sergeyev, S.; Diels, L.; Sels, B.; Maes, B.U.W. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Bio-based aromatic amines from lignin-derived monomers |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
ACS Sustainable Chemistry and Engineering |
Abbreviated Journal |
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Volume |
7 |
Issue |
7 |
Pages |
6906-6916 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Organic synthesis (ORSY); Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
A new approach to synthesize valuable 3,4-dialkoxyanilines and alkyl propionates from lignin-derived 4-propylguaiacol and -catechol with overall isolated yields up to 65% has been described. The strategy is based on the introduction of nitrogen via a Beckmann rearrangement. Amino introduction therefore coincides with a C-defunctionalization reaction; overall a replacement of the propyl chain by an amino group is obtained. The process only requires cheap bulk chemicals as reagents/reactants and does not involve column chromatography to purify the reaction products. Furthermore, all carbon atoms from the biorenewable lignin-derived monomers are transformed into valuable compounds. Greenness was assessed by performing a Green Metrics analysis on two dialkoxyanilines. A comparison was made with literature routes for these compounds starting from a petrochemical substrate. |
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000463462100050 |
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2019-02-14 |
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Series Volume |
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Edition |
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ISSN |
2168-0485 |
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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:159378 |
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7556 |
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Permanent link to this record |
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Author |
Bottari, F. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Bio(inspired) strategies for the electro-sensing of β-lactam antibiotics |
Type |
Doctoral thesis |
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Year |
2019 |
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Abbreviated Journal |
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Volume |
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Pages |
205 p. |
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Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
In the broad context of food and environmental safety, the development of selective and sensitive analytical tools for the detection of β-lactam antibiotics in milk down to their Maximum Residues Limits (MRL), is still an open challenge. To address this need, the design of new bio(mimetic) electrochemical sensors was investigated in the present thesis. These sensors are based on the intrinsic electrochemistry of β-lactam antibiotics, taking advantages of the characteristic electrochemical fingerprints of the core structures and redox active side chain groups. The electrochemistry of nafcillin (NAF) and the isoxazolyl penicillins (ISOXA) was investigated, identifying the peculiar electrochemical fingerprint of each antibiotic, proving that it is possible to use electrochemistry for the selective detection of these antimicrobial drugs. Once verified the applicability of a direct detection, different sensor configurations were tested mainly focusing on: – the selection and validation of aptamers to be used as bioreceptors in the development of β-lactam biosensors; – the design of biomimetic receptors, particularly molecularly imprinted polymers, and other synthetic electrode modifiers compatible with a direct detection strategy. The selection of novel aptamers was performed following both a traditional FluMag SELEX protocol and a novel variant based on graphene oxide (GO). First results with the modified GO-SELEX are promising but more work still needs to be done to validate this novel approach. The few aptamers for β-lactam antibiotics, already reported in literature by other groups, were poorly characterized up to now. For this reason, a multi-analytical characterization protocol for aptamer binding studies was optimized and validated by focusing on aptamer AMP17 against ampicillin. The protocol combines ITC, nESI-MS and 1H-NMR. Very striking was the fact that the aptamer sequence did not show any sign of specific binding for its target, even if it was used in many other studies in the past. This thesis now offers a validated protocol for testing the affinity and binding capabilities of aptamer sequences. In parallel, the functionalization of the electrode surface with polymer modifiers was studied. In particular we optimized a MIP electrochemical sensor based on 4-aminobenzoic acid for the direct electrochemical detection of CFQ. Another approach was tested based on the intrinsic affinity of NAF for an oPD electropolymerized film on the electrode surface. Both sensors were found to be sensitive and selective for the detection of CFQ and NAF at MRLs in buffer solutions. The proposed protocols are robust and promising for technological transfer. Lastly, the research activity was directed towards milk sample analysis following two parallel routes: the development of a pre-treatment protocol for raw milk, based on solvent addition (ACN or ISO), and the study of β-lactam antibiotics electrochemistry in undiluted raw milk with addition of KNO3 as supporting electrolyte. Both approaches gave encouraging results and the detection of NAF, CFQ and CFU in the micromolar range was achieved, with the second approach in undiluted raw milk. |
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Call Number |
UA @ admin @ c:irua:164996 |
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7557 |
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Permanent link to this record |
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Author |
Carvajal-Arroyo, J.M.; Vitor Akaboci, T.R.; Ruscalleda, M.; Colprim, J.; Courtens, E.; Vlaeminck, S.E. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Biofilms for one-stage autotrophic nitrogen removal |
Type |
H3 Book chapter |
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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 |
205-222
T2 - Aquatic biofilms : ecology, water qua |
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Keywords |
H3 Book chapter; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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978-1-910190-17-3 |
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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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UA @ admin @ c:irua:130466 |
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7559 |
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Author |
Harlay, J.; Borges, A.V.; van der Zee, C.; Delille, B.; Godoi, R.H.M.; Schiettecatte, L.-S.; Roevros, N.; Aerts, K.; Lapernat, P.-E.; Rebreanu, L.; Groom, S.; Daro, M.-H.; Van Grieken, R.; Chou, L. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Biogeochemical study of a coccolithophore bloom in the northern Bay of Biscay (NE Atlantic Ocean) in June 2004 |
Type |
A1 Journal article |
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Year |
2010 |
Publication |
Progress in oceanography |
Abbreviated Journal |
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Volume |
86 |
Issue |
3/4 |
Pages |
317-336 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
The present paper synthesizes data obtained during a multidisciplinary cruise carried out in June 2004 at the continental margin of the northern Bay of Biscay. The data-set allows to describe the different stages of a coccolithophore bloom dominated by Emiliania huxleyi. The cruise was carried out after the main spring phytoplankton bloom that started in mid-April and peaked in mid-May. Consequently, low phosphate (PO4 < 0.2 μM) and silicate (DSi < 2.0 μM) concentrations, low partial pressure of carbon dioxide (pCO2) and high calcite saturation degree in surface waters combined with thermal stratification, probably favoured the blooming of coccolithophores. During the period of the year our cruise was carried out, internal tides induce enhanced vertical mixing at the continental shelf break leading to the injection of inorganic nutrients to surface waters that probably trigger the bloom. The bloom developed as the water-column stratified and as the water mass was advected over the continental shelf, following the general residual circulation in the area. The most developed phase of the bloom was sampled in a remote sensed high reflectance (HR) patch over the continental shelf that was characterized by low chlorophyll-a (Chl-a) concentration in surface waters (<1.0 μg L−1), high particulate inorganic carbon (PIC) concentration (not, vert, similar8 μmol L−1) and coccolithophore abundance up to 57 × 106 cells L−1. Transparent exopolymer particles (TEP) concentrations ranged between 15 and 75 μg C L−1 and carbon content of TEP represented up to 26% of the particulate organic carbon (POC; maximum concentration of 15.5 μmol L−1 in the upper 40 m). Integrated primary production (PP) ranged between 210 and 680 mg C m−2 d−1 and integrated calcification (CAL) ranged between 14 and 140 mg C m−2 d−1, within the range of PP and CAL values previously reported during coccolithophore blooms in open and shelf waters of the North Atlantic Ocean. Bacterial protein production (BPP) measurements in surface waters (0.30.7 μg C L−1 h−1) were much higher than those reported during early phases of coccolithophore blooms in natural conditions, but similar to those during peak and declining coocolithophorid blooms reported in mesocosms. Total alkalinity anomalies with respect to conservative mixing (ΔTA) down to −49 μmol kg−1 are consistent with the occurrence of biogenic precipitation of calcite, while pCO2 remained 15107 μatm lower than atmospheric equilibrium (372 μatm). The correlation between ΔTA and pCO2 suggested that pCO2 increased in part due to calcification, but this increase was insufficient to overcome the background under-saturation of CO2. This is related to the biogeochemical history of the water masses due to net carbon fixation by the successive phytoplankton blooms in the area prior to the cruise, hence, the investigated area remained a sink for atmospheric CO2 despite calcification. |
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Wos |
000281937800001 |
Publication Date |
2010-04-20 |
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0079-6611 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:84236 |
Serial |
7560 |
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Author |
Gielis, J.; Caratelli, D.; Fougerolle, Y.; Ricci, P.E.; Gerats, T. |
![find book details (via ISBN) isbn](img/isbn.gif)
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Title |
A biogeometrical model for corolla fusion in Asclepiad flowers |
Type |
H1 Book chapter |
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Year |
2017 |
Publication |
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Abbreviated Journal |
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Volume |
2 |
Issue |
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Pages |
83-105
T2 - Modeling in mathematics : proceedings |
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Keywords |
H1 Book chapter; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The molecular genetics of flower development have been studied extensively for more than two decades. Fusion of organs and the tendency to oligomery, important characteristics of flower evolution, so far have remained fairly elusive. We present a geometric model for shape and fusion in the corolla of Asclepiads. Examples demonstrate how fusion of petals creates stable centers, a prerequisite for the formation of complex pollination structures via congenital and postgenital fusion events, with the formation of de novo organs, specific to Asclepiads. The development of the corolla reduces to simple inequalities from the MATHS-BOX. The formation of stable centers and of bell and tubular shapes in flowers are immediate and logical consequences of the shape. Our model shows that any study on flowers, especially in evo-devo perspective should be performed within the wider framework of polymery and oligomery and of fusion and synorganization. |
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Wos |
000442076400007 |
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2017-04-20 |
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ISBN |
978-94-6239-260-1; 978-94-6239-261-8; 2543-0300; 978-94-6239-260-1 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:144551 |
Serial |
7561 |
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Author |
Van Eynde, E. |
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Title |
Biotemplate silica-titania diatoms for gas phase photocatalysis |
Type |
Doctoral thesis |
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Year |
2015 |
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184 p. |
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Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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978-90-5728-500-4 |
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UA library record |
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Call Number |
UA @ admin @ c:irua:130503 |
Serial |
7564 |
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Author |
Markowicz, A.A.; Storms, H.M.; Van Grieken, R.E. |
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Title |
Bremsstrahlung background in electron-probe X-ray-microanalysis of thin films |
Type |
A1 Journal article |
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Year |
1985 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
57 |
Issue |
14 |
Pages |
2885-2889 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1985AVD0100033 |
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2005-03-08 |
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0003-2700; 5206-882x |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:113616 |
Serial |
7567 |
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Author |
Tang, T.; Strokal, M.; van Vliet, M.T.H.; Seuntjens, P.; Burek, P.; Kroeze, C.; Langan, S.; Wada, Y. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Bridging global, basin and local-scale water quality modeling towards enhancing water quality management worldwide |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
Current Opinion in Environmental Sustainability |
Abbreviated Journal |
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Volume |
36 |
Issue |
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Pages |
39-48 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Global water quality (WQ) modeling is an emerging field. In this article, we identify the missing linkages between global and basin/local-scale WQ models, and discuss the possibilities to fill these gaps. We argue that WQ models need stronger linkages across spatial scales. This would help to identify effective scale-specific WQ management options and contribute to future development of global WQ models. Two directions are proposed to improve the linkages: nested multiscale WQ modeling towards enhanced water management, and development of next-generation global WQ models based-on basin/local-scale mechanistic understanding. We highlight the need for better collaboration among WQ modelers and policy-makers in order to deliver responsive water policies and management strategies across scales. |
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Wos |
000460234600006 |
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2018-11-07 |
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1877-3435 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:158643 |
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7568 |
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Author |
Gielis, J.; Caratelli, D.; Tavkelidze, I.; Fougerolle, Y.; Ricci, P.E.; Gerats, T. |
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Title |
Bulky knots and links generated by cutting generalized Mobius-Listing bodies and applications in the natural sciences |
Type |
H2 Book chapter |
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2013 |
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Abbreviated Journal |
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Issue |
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Pages |
167-183
T2 - Math Art Summit : Koninklijke Vlaamse |
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Keywords |
H2 Book chapter; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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978-90-6569-119-4 |
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Call Number |
UA @ admin @ c:irua:110955 |
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7569 |
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Author |
Buydens, L.; van Espen, P.; Rutan, S. |
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Title |
CAC-2010 : Twelfth international conference on chemometrics in analytical chemistry |
Type |
Editorial |
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Year |
2011 |
Publication |
Analytica chimica acta |
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Volume |
705 |
Issue |
1/2 |
Pages |
1 |
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Editorial; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000295993900001 |
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2011-08-14 |
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0003-2670; 1873-4324 |
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UA library record; WoS full record |
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Call Number |
UA @ admin @ c:irua:93573 |
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7570 |
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Author |
Bencs, L. |
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Title |
Calculation of the spectral line profile broadening parameter in graphite furnace atomic absorption spectrometry |
Type |
A1 Journal article |
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Year |
2008 |
Publication |
Canadian Journal Of Analytical Sciences And Spectroscopy |
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Volume |
53 |
Issue |
2 |
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52-58 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
A polynomial approach is applied for a number of data from the Posener-tables to calculate the values of the intensity distribution function of atomic absorption lines – H(a, 0.726a) – at the tabulated damping-parameter values with an error not worse than 0.044 %. For the resultant H(a, 0.726a) data, the ninth and sixth order polynomials can be fitted according to the damping parameter range of 0-2, and 2-10, respectively, which results in a minimal error of approximation. The derived functions are simply applicable to the calculation of any H(a, 0.726a) value belonging to a damping-parameter of any arbitrarily selected spectral line, implying the influence of Doppler- and Lorentz-broadening. The overall error of the described method is lower than 0.4 %. |
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000260130600002 |
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ISSN |
1205-6685 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:103094 |
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7571 |
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Author |
Ilgrande, C.; Christiaens, M.; Clauwaert, P.; Vlaeminck, S.E.; Boon, N. |
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Title |
Can nitrification bring us to Mars? The role of microbial interactions on nitrogen recovery in Life Support Systems |
Type |
A2 Journal article |
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Year |
2016 |
Publication |
Communications in agricultural and applied biological sciences |
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81 |
Issue |
1 |
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74-79 |
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A2 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
The development cost-effective life support technologies is a highly relevant topic for space biology. Currently, food and water supply during space flights is currently restricted by technical and economic constraints: daily water consumption of an average crew of 6 members is about 72 L, with an estimated cost of 2,160,000 d-1. To reduce these costs and sustain long term space missions, the European Space Agency designed MELiSSA, an artificial ecosystem based on 5 compartments for the recycling gas, liquid and solid waste (Lasseur et al., 2011). In the CI stage, crew and inedible solid waste is fermented by thermophilic anaerobic bacteria, producing volatile fatty acids (VFAs), CO2 and ammonium (NH4+). In the CII compartment the VFAs are converted into edible biomass, using the photoheterotroph Rodospirillum rubrum. Afterwards, the nitrifying CIII unit converts toxic levels of ammonia/ammonium into nitrate, which enables the effluent to be fed to the photoautotrohopic CIV stage, that provides food and oxygen for the crew (Godia et al., 2002). The highest nitrogen flux in a Life Support System is human urine. As nitrate is the preferred form of nitrogen fertilizer for hydroponic plant cultivation, urine nitrification is an essential process in the MELiSSA loop. The development of the Additional Unit for Water Treatment or Urine NItrification ConsortiUM (UNICUM) requires the selection and characterization of the microorganisms that will be used. The key microorganisms in the biological treatment of urine are heterotrophs, for the hydrolysis of urea into ammonia and carbon dioxide, Ammonia Oxidizing Bacteria (AOB), for the ammonia oxidation into nitrite and Nitrite Oxidizing Bacteria (NOB), for the conversion of nitrite into nitrate. The strains were selected according to predefined safety (non sporogenic and BSL 1) and metabolic (Ks, μmax) criteria. To evaluate functional consortia for space applications, ureolysis, nitritation and nitratation of the selected microorganisms and synthetic communities were elucidated. Additionally, urine is a matrix with a high salt content. Unhydrolised urine's EC ranges from 1.1 to 33.9 mS/cm, the mean value being 21.5 mS/cm (Marickar, 2010), while hydrolysed urine can reach higher levels, up to 75 mS/cm. This conditions could inhibit microbial metabolism, therefore the effect of salinity on urine nitrification was also elucidated. |
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1379-1176 |
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UA @ admin @ c:irua:151151 |
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7573 |
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Alloul, A.; Ganigue, R.; Spiller, M.; Meerburg, F.; Cagnetta, C.; Rabaey, K.; Vlaeminck, S.E. |
![goto web page url](http://nano.uantwerpen.be/nanorefs/img/www.gif)
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Title |
Capture-ferment-upgrade : a three-step approach for the valorization of sewage organics as commodities |
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A1 Journal article |
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2018 |
Publication |
Environmental science and technology |
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52 |
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12 |
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6729-6742 |
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A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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This critical review outlines a roadmap for the conversion of chemical oxygen demand (COD) contained in sewage to commodities based on three-steps: capture COD as sludge, ferment it to volatile fatty acids (VFA), and upgrade VFA to products. The article analyzes the state-of-the-art of this three step approach and discusses the bottlenecks and challenges. The potential of this approach is illustrated for the European Union's 28 member states (EU-28) through Monte Carlo simulations. High-rate contact stabilization captures the highest amount of COD (66-86 g COD person equivalent(-1) day(-1) in 60% of the iterations). Combined with thermal hydrolysis, this would lead to a VFA-yield of 23-44 g COD person equivalent(-1) day(-1). Upgrading VFA generated by the EU-28 would allow, in 60% of the simulations, for a yearly production of 0.2-2.0 megatonnes of esters, 0.7-1.4 megatonnes of polyhydroxyalkanoates or 0.6-2.2 megatonnes of microbial protein substituting, respectively, 20-273%, 70-140% or 21-72% of their global counterparts (i.e., petrochemical-based esters, bioplastics or fishmeal). From these flows, we conclude that sewage has a strong potential as biorefinery feedstock, although research is needed to enhance capture, fermentation and upgrading efficiencies. These developments need to be supported by economic/environmental analyses and policies that incentivize a more sustainable management of our resources. |
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000436018900004 |
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2018-05-17 |
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0013-936x; 1520-5851 |
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UA library record; WoS full record; WoS citing articles |
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UA @ admin @ c:irua:151968 |
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7574 |
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Caen, J.; Schalm, O.; Janssens, K. |
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Caractérisation historique et chimique des peintures en grisaille et du verre de vitrail dans l'oeuvre de J.-B. Capronnier (1814 – 1891) et J.-B. Bethune (1821 – 1894) |
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P3 Proceeding |
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2000 |
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P3 Proceeding; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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no |
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Call Number |
UA @ admin @ c:irua:112007 |
Serial |
7576 |
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Author |
Godoi, R.H.M.; Bittencourt, A.V.L.; Hirata, P.Y.; Jafelicci Junior, M.; dos Reis Neto, J.M.; de Souza Sarkis, J.E.; Zara, L.F.; Van Grieken, R. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Caracterização dos sistemas iônicos e particulado no reservatório |
Type |
H3 Book chapter |
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Year |
2011 |
Publication |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
170-188
T2 - Eutrofização em reservatórios : gestã |
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Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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ISBN |
978-85-7335-286-3 |
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UA library record |
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no |
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Call Number |
UA @ admin @ c:irua:97170 |
Serial |
7577 |
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Author |
Düking, R.; Gielis, J.; Liese, W. |
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Title |
Carbon flux and carbon stock in a bamboo stand and their relevance for mitigating climate change |
Type |
A3 Journal article |
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Year |
2011 |
Publication |
Bamboo Science & Culture |
Abbreviated Journal |
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Volume |
24 |
Issue |
1 |
Pages |
1-6 |
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Keywords |
A3 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
In this report we describe the basics of biological carbon fixation in bamboo forests. Confusing carbon stock with carbon flux has led to false expectations on the significance of bamboo forests as carbon sinks. Furthermore, misunderstandings about the growth of bamboo culms can lead to highly exaggerated expectations on the productivity of bamboo. |
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ISSN |
1535-7635 |
ISBN |
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UA library record |
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Call Number |
UA @ admin @ c:irua:91091 |
Serial |
7578 |
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Author |
Tiwari, S.; Van de Put, M.L.; Sorée, B.; Vandenberghe, W.G. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Carrier transport in a two-dimensional topological insulator nanoribbon in the presence of vacancy defects |
Type |
P1 Proceeding |
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Year |
2018 |
Publication |
International Conference on Simulation of Semiconductor Processes and Devices : [proceedings]
T2 – International Conference on Simulation of Semiconductor Processes and, Devices (SISPAD), SEP 24-26, 2018, Austin, TX |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
92-96 |
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Keywords |
P1 Proceeding; Engineering sciences. Technology; Condensed Matter Theory (CMT) |
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Abstract |
We model transport through two-dimensional topological insulator (TI) nanoribbons. To model the quantum transport, we employ the non-equilibrium Green's function approach. With the presented approach, we study the effect of lattice imperfections on the carrier transport. We observe that the topologically protected edge states of TIs are robust against a high percentage (2%) of vacancy defects. We also investigate tunneling of the edge states in two decoupled TI nanoribbons. |
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Wos |
000516619300024 |
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2018-12-08 |
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ISSN |
978-1-5386-6790-3; 1946-1577; 978-1-5386-6791-0 |
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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:181281 |
Serial |
7579 |
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Permanent link to this record |
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Author |
Serneels, S.; Faber, K.; Verdonck, T.; van Espen, P.J. |
![goto web page (via DOI) doi](http://nano.uantwerpen.be/nanorefs/img/doi.gif)
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Title |
Case specific prediction intervals for tri-PLS1 : the full local linearisation |
Type |
A1 Journal article |
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Year |
2011 |
Publication |
Chemometrics and intelligent laboratory systems |
Abbreviated Journal |
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Volume |
108 |
Issue |
2 |
Pages |
93-99 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Abstract |
A new method to estimate case specific prediction uncertainty for univariate trilinear partial least squares (tri-PLS1) regression is introduced. This method is, from a theoretical point of view, the most exact finite sample approximation to true prediction uncertainty that has been reported up till now. Using the new method, different error sources can be propagated, which is an advantage that cannot be offered by data driven approaches such as the bootstrap. In a concise example, it is illustrated how the method can be applied. In the Appendix, efficient algorithms are presented to compute the estimates required. |
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Wos |
000295310000002 |
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2011-05-12 |
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ISSN |
0169-7439; 1873-3239 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:92788 |
Serial |
7580 |
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Author |
Potgieter, J.H.; Godoi, R.H.M.; Van Grieken, R. |
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Title |
A case study of high-temperature corrosion in rotary cement kilns |
Type |
A1 Journal article |
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Year |
2004 |
Publication |
Journal of the South African Institute of Mining and Metallurgy |
Abbreviated Journal |
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Volume |
104 |
Issue |
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Pages |
603-606 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000226560900008 |
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0038-223x |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:50187 |
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7581 |
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Author |
Noone, K.J.; Johnson, D.W.; Taylor, J.P.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Durkee, P.A.; Nielsen, K.; Öström, E.; O'Dowd, C.D.; Smith, M.H.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; de Bock, L.; Van Grieken, R.E.; Hudson, J.G.; Brooks, I.; Gasparovic, R.F.; Pockalny, R.A. |
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Title |
A case study of ship track formation in a polluted marine boundary layer |
Type |
A1 Journal article |
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Year |
2000 |
Publication |
Journal of the atmospheric sciences |
Abbreviated Journal |
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Volume |
57 |
Issue |
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Pages |
2748-2764 |
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Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000088911800016 |
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2002-07-27 |
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0022-4928; 1520-0469 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:31631 |
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7582 |
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Noone, K.J.; Öström, E.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Johnson, D.W.; Taylor, J.P.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; O'Dowd, C.D.; Smith, M.H.; Durkee, P.A.; Nielsen, K.; Hudson, J.G.; Pockalny, R.A.; de Bock, L.; Van Grieken, R.E.; Gasparovic, R.F.; Brooks, I. |
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Title |
A case study of ships forming and not forming tracks in moderately polluted clouds |
Type |
A1 Journal article |
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2000 |
Publication |
Journal of the atmospheric sciences |
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57 |
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2729-2747 |
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A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000088911800015 |
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2002-07-27 |
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0022-4928; 1520-0469 |
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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:31624 |
Serial |
7583 |
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Author |
Sóti, V. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Catalytic detoxification of lignocellulose hydrolyzate |
Type |
Doctoral thesis |
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Year |
2019 |
Publication |
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Volume |
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Issue |
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Pages |
XXVII, 243 p. |
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Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL); Biochemical Wastewater Valorization & Engineering (BioWaVE) |
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Abstract |
The present PhD research investigated the possibility of catalytic detoxification of poplar wood based and steam exploded lignocellulosic hydrolyzate with different types of laccase enzymes, with special focus on ethanol and lactic acid products at industrially relevant parameters: high final product concentration, high initial substrate loading and integrated processes. The simultaneous saccharification and fermentation (SSF) process was taken as a base case and five types of laccases were thoroughly investigated on their utilization potential. Phenolic removal from the liquid xylose rich fraction (XRF) was higher with fungal laccases (65-90 %) compared to approximately 30 % removal with bacterial laccase. Moreover, the optimal pH of fungal laccases was close to pH 4.5, the optimum for cellulase, while the bacterial laccase worked at basic pH. Integrating laccase treatment and hydrolysis together showed that fungal laccases have negative impact on final sugar concentration, while bacterial laccase had a strong positive effect. Although bacterial laccase removed less phenol and although its optimal conditions are difficult to integrate with hydrolysis, its enhancing effect on cellulase activity makes it a better candidate for application. The presence of the solid fraction (SF) alters the phenolic concentration evolution significantly, thus screening experiments with the liquid fraction alone do not provide sufficient information for the combined process. Magnetic Cross-Linked Enzyme Aggregates (m-CLEAs) immobilization was assessed for bacterial laccase. m-CLEAs decreased phenolic concentration faster at every pH compared to free bacterial laccase; however, the removal was caused by adsorption rather than by enzyme activity. Although the size of m-CLEAs particles are in the µm range, around 90 % of the initial catalyst mass was recycled from a dense (15 % substrate loading) mixture via magnetic separation. The high recycling rate is promising; m-CLEAs immobilization method can have industrial utilization potential. Minimum sugar revenue (MSR) estimations show that currently hardwood based MSR is 70 % more expensive than corn grain based MSR. About 7-10 fold cellulase activity increase will be needed until MSR will be competitive with corn grain MSR. However, m-CLEAs cellulase can already be competitive if the corn prices are in the higher regime of last year’s prices. |
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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:180125 |
Serial |
7584 |
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Permanent link to this record |