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| Author | Bekaert, J. | ||||
| Title | Phonon-mediated superconductivity in ternary silicides X₄ CoSi (X = Nb, Ta) | Type | A1 Journal article | ||
| Year | 2023 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 108 | Issue | 13 | Pages | 134504-134507 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | The superconducting properties of two recently synthesized ternary silicides with unit formula X<sub>4</sub>CoSi (X = Nb, Ta) are investigated through ab initio calculations combined with Eliashberg theory. Interestingly, their crystal structure comprises interlocking honeycomb networks of Nb/Ta atoms. Nb<sub>4</sub>CoSi is found to harbor better conditions for phonon-mediated superconductivity, as it possesses a higher density of states at the Fermi level, fostering stronger electron-phonon coupling. The superconducting critical temperatures (T<sub>c</sub>) follow the same trend, with Nb<sub>4</sub>CoSi having a twice higher value than Ta<sub>4</sub>CoSi. Furthermore, the calculated T<sub>c</sub> values (5.9 K vs 3.1 K) agree excellently with the experimentally obtained ones, establishing superconductivity in this new materials class as mediated by the electron-phonon coupling. Furthermore, my calculations show that the superconducting properties of these compounds do not simply correlate with the parameters of their honeycomb networks, contrary to proposals raised in the literature. Rather, their complete fermiology and phonon spectrum should be taken into account in order to explain their respective superconducting properties. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001140080300003 | Publication Date | 2023-10-17 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
Impact Factor  |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2023 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:201445 | Serial | 9071 | ||
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| Author | Santos-Castro, G.; Pandey, T.; Bruno, C.H.V.; Santos Caetano, E.W.; Milošević, M.V.; Chaves, A.; Freire, V.N. | ||||
| Title | Silicon and germanium adamantane and diamantane monolayers as two-dimensional anisotropic direct-gap semiconductors | Type | A1 Journal article | ||
| Year | 2023 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 108 | Issue | 3 | Pages | 035302-35310 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | Structural and electronic properties of silicon and germanium monolayers with two different diamondoid crystal structures are detailed ab initio. Our results show that, despite Si and Ge being well-known indirect gap semiconductors in their bulk form, their adamantane and diamantane monolayers can exhibit optically active direct gap in the visible frequency range, with highly anisotropic effective masses, depending on the monolayer crystal structure. Moreover, we reveal that gaps in these materials are highly tunable with applied strain. These stable monolayer forms of Si and Ge are therefore expected to help bridging the gap between the fast growing area of opto-electronics in two-dimensional materials and the established silicon-based technologies. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001074455300012 | Publication Date | 2023-07-05 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2023 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:200348 | Serial | 9089 | ||
| Permanent link to this record | |||||
| Author | Lima, I.L.C.; Milošević, M.V.; Peeters, F.M.; Chaves, A. | ||||
| Title | Tuning of exciton type by environmental screening | Type | A1 Journal article | ||
| Year | 2023 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 108 | Issue | 11 | Pages | 115303-115308 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | We theoretically investigate the binding energy and electron-hole (e-h) overlap of excitonic states confined at the interface between two-dimensional materials with type-II band alignment, i.e., with lowest conduction and highest valence band edges placed in different materials, arranged in a side-by-side planar heterostructure. We propose a variational procedure within the effective mass approximation to calculate the exciton ground state and apply our model to a monolayer MoS2/WS2 heterostructure. The role of nonabrupt interfaces between the materials is accounted for in our model by assuming a WxMo1-xS2 alloy around the interfacial region. Our results demonstrate that (i) interface-bound excitons are energetically favorable only for small interface thickness and/or for systems under high dielectric screening by the materials surrounding the monolayer, and that (ii) the interface exciton binding energy and its e-h overlap are controllable by the interface width and dielectric environment. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001077758300002 | Publication Date | 2023-09-08 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
| Impact Factor |
3.7 | Times cited | 1 | Open Access | |
| Notes | Approved | Most recent IF: 3.7; 2023 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:200356 | Serial | 9110 | ||
| Permanent link to this record | |||||
| Author | Wang, J.; Zhao, W.-S.; Hu, Y.; Filho, R.N.C.; Peeters, F.M. | ||||
| Title | Charged vacancy in graphene : interplay between Landau levels and atomic collapse resonances | Type | A1 Journal article | ||
| Year | 2024 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 109 | Issue | 10 | Pages | 104103-104106 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | The interplay between a magnetic field and the Coulomb potential from a charged vacancy on the electron states in graphene is investigated within the tight-binding model. The Coulomb potential removes locally Landau level degeneracy, while the vacancy introduces a satellite level next to the normal Landau level. These satellite levels are found throughout the positive-energy region, but in the negative-energy region, they turn into atomic collapse resonances. Crossings between Landau levels with different angular quantum number m are found. Unlike the point impurity system in which an anticrossing occurs between Landau levels of the same m, in this work anticrossing is found between the normal Landau level and the vacancy-induced level. The atomic collapse resonance hybridizes with the Landau levels. The charge at which the lowest Landau level m = -1, N = 1 crosses E = 0 increases with enhancing magnetic field. A Landau level scaling anomaly occurs when the charge is larger than the critical charge beta 0.6 and this critical charge is independent of the magnetic field. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001199561900008 | Publication Date | 2024-03-04 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2024 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:205508 | Serial | 9137 | ||
| Permanent link to this record | |||||
| Author | Pascucci, F.; Conti, S.; Perali, A.; Tempère, J.; Neilson, D. | ||||
| Title | Effects of intralayer correlations on electron-hole double-layer superfluidity | Type | A1 Journal article | ||
| Year | 2024 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 109 | Issue | 9 | Pages | 094512-94515 |
| Keywords | A1 Journal article; Theory of quantum systems and complex systems; Condensed Matter Theory (CMT) | ||||
| Abstract | We investigate the intralayer correlations acting within the layers in a superfluid system of electron -hole spatially separated layers. In this system, superfluidity is predicted to be almost exclusively confined to the Bose-Einstein condensate (BEC) and crossover regimes where the electron -hole pairs are well localized. In this case, Hartree-Fock is an excellent approximation for the intralayer correlations. We find in the BEC regime that the effect of the intralayer correlations on superfluid properties is negligible but in the BCS-BEC crossover regime the superfluid gap is significantly weakened by the intralayer correlations. This is caused by the intralayer correlations boosting the number of low -energy particle -hole excitations that drive the screening. We further find that the intralayer correlations suppress the predicted phenomenon in which the average pair size passes through a minimum as the crossover regime is traversed. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001199662600001 | Publication Date | 2024-03-18 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2024 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:205476 | Serial | 9145 | ||
| Permanent link to this record | |||||
| Author | Moura, V.N.; Chaves, A.; Peeters, F.M.; Milošević, M.V. | ||||
| Title | McMillan-Ginzburg-Landau theory of singularities and discommensurations in charge density wave states of transition metal dichalcogenides | Type | A1 Journal article | ||
| Year | 2024 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 109 | Issue | 9 | Pages | 094507-94511 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | The McMillan-Ginzburg-Landau (MGL) model for charge density waves (CDW) is employed in a systematic phenomenological study of the different phases that have been probed in recent experiments involving transition metal dichalcogenides. We implemented an efficient imaginary time evolution method to solve the MGL equations, which enabled us to investigate the role of different coupling parameters on the CDW patterns and to perform calculations with different energy functionals that lead to several experimentally observed singularities in the CDW phase profiles. In particular, by choosing the appropriate energy functionals, we were able to obtain phases that go beyond the well-known periodic phase slips (discommensurations), exhibiting also topological defects (i.e., vortex-antivortex pairs), domain walls where the CDW order parameter is suppressed, and even CDW with broken rotational symmetry. Finally, we briefly discuss the effect of these different CDW phases on the profile and critical temperature of the competing superconducting state. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001199651500001 | Publication Date | 2024-03-11 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record | |
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2024 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:205491 | Serial | 9158 | ||
| Permanent link to this record | |||||
| Author | Shafiei, M.; Fazileh, F.; Peeters, F.M.; Milošević, M.V. | ||||
| Title | Tailoring weak and metallic phases in a strong topological insulator by strain and disorder : conductance fluctuations signatures | Type | A1 Journal article | ||
| Year | 2024 | Publication | Physical review B | Abbreviated Journal | |
| Volume | 109 | Issue | 4 | Pages | 045129-7 |
| Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
| Abstract | Transport measurements are readily used to probe different phases in disordered topological insulators (TIs), where determining topological invariants explicitly is challenging. On that note, universal conductance fluctuations (UCF) theory asserts the conductance G for an ensemble has a Gaussian distribution, and that standard deviation 8G depends solely on the symmetries and dimensions of the system. Using a real-space tight -binding Hamiltonian on a system with Anderson disorder, we explore conductance fluctuations in a thin Bi2Se3 film and demonstrate the agreement of their behavior with UCF hypotheses. We further show that magnetic field applied out-of-plane breaks the time -reversal symmetry and transforms the system's Wigner-Dyson class from root symplectic to unitary, increasing 8G by 2. Finally, we reveal that while Bi2Se3 is a strong TI, weak TI and metallic phases can be stabilized in presence of strain and disorder, and detected by monitoring the conductance fluctuations. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 001173938400008 | Publication Date | 2024-01-16 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2469-9969; 2469-9950 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.7 | Times cited | 1 | Open Access | |
| Notes | Approved | Most recent IF: 3.7; 2024 IF: 3.836 | |||
| Call Number | UA @ admin @ c:irua:204765 | Serial | 9177 | ||
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| Author | Bjørnåvold, A.; David, M.; Mermet-Bijon, V.; Beaumais, O.; Crastes dit Sourd, R.; Van Passel, S.; Martinet, V. | ||||
| Title | To tax or to ban? A discrete choice experiment to elicit public preferences for phasing out glyphosate use in agriculture | Type | A1 Journal article | ||
| Year | 2023 | Publication | PLoS ONE | Abbreviated Journal | |
| Volume | 18 | Issue | 3 | Pages | 1-12 |
| Keywords | A1 Journal article; Economics; Engineering Management (ENM) | ||||
| Abstract | In 2023, the European Union will vote on the reauthorization of glyphosate use, renewed in 2017 despite concern on impacts on the environment and public health. A ban is supported by several Member States but rejected by most farmers. What are citizens’ preferences to phase out glyphosate? To assess whether taxation could be an alternative to a ban, we conducted a discrete choice experiment in five European countries. Our results reveal that the general public is strongly willing to pay for a reduction in glyphosate use. However, while 75.5% of respondents stated to support a ban in the pre-experimental survey, experimental results reveal that in 73.35% of cases, earmarked taxation schemes are preferred when they lead to a strong reduction in glyphosate use for an increase in food price lower than that induced by a ban. When glyphosate reduction is balanced against its costs, a tax may be preferred. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000985134400084 | Publication Date | 2023-03-16 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1932-6203 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | Approved | Most recent IF: 3.7; 2023 IF: 2.806 | |||
| Call Number | UA @ admin @ c:irua:196999 | Serial | 9236 | ||
| Permanent link to this record | |||||
| Author | Cai, Y.; Michiels, R.; De Luca, F.; Neyts, E.; Tu, X.; Bogaerts, A.; Gerrits, N. | ||||
| Title | Improving Molecule–Metal Surface Reaction Networks Using the Meta-Generalized Gradient Approximation: CO2Hydrogenation | Type | A1 Journal Article | ||
| Year | 2024 | Publication | The Journal of Physical Chemistry C | Abbreviated Journal | J. Phys. Chem. C |
| Volume | 128 | Issue | 21 | Pages | 8611-8620 |
| Keywords | A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; | ||||
| Abstract | Density functional theory is widely used to gain insights into molecule−metal surface reaction networks, which is important for a better understanding of catalysis. However, it is well-known that generalized gradient approximation (GGA) density functionals (DFs), most often used for the study of reaction networks, struggle to correctly describe both gas-phase molecules and metal surfaces. Also, GGA DFs typically underestimate reaction barriers due to an underestimation of the selfinteraction energy. Screened hybrid GGA DFs have been shown to reduce this problem but are currently intractable for wide usage. In this work, we use a more affordable meta-GGA (mGGA) DF in combination with a nonlocal correlation DF for the first time to study and gain new insights into a catalytically important surface reaction network, namely, CO2 hydrogenation on Cu. We show that the mGGA DF used, namely, rMS-RPBEl-rVV10, outperforms typical GGA DFs by providing similar or better predictions for metals and molecules, as well as molecule−metal surface adsorption and activation energies. Hence, it is a better choice for constructing molecule−metal surface reaction networks. |
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | Publication Date | 2024-05-30 | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1932-7447 | ISBN | Additional Links | ||
| Impact Factor |
3.7 | Times cited | Open Access | ||
| Notes | H2020 Marie Sklodowska-Curie Actions, 813393 ; Fonds Wetenschappelijk Onderzoek, 1114921N ; H2020 European Research Council, 810182 ; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, 019.202EN.012 ; | Approved | Most recent IF: 3.7; 2024 IF: 4.536 | ||
| Call Number | PLASMANT @ plasmant @ | Serial | 9248 | ||
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| Author | Van Dael, M.; Marquez, N.; Reumerman, P.; Pelkmans, L.; Kuppens, T.; Van Passel, S. | ||||
| Title | Development and techno-economic evaluation of a biorefinery based on biomass (waste) streams : case study in the Netherlands | Type | A1 Journal article | ||
| Year | 2014 | Publication | Biofuels Bioproducts & Biorefining-Biofpr | Abbreviated Journal | Biofuel Bioprod Bior |
| Volume | 8 | Issue | 5 | Pages | 635-644 |
| Keywords | A1 Journal article; Engineering sciences. Technology; Engineering Management (ENM) | ||||
| Abstract | In this paper, the technical and economic advantages of combining conversion technologies into a multi-dimensional plant primarily using regional biomass residues are investigated. The main objective is to show how locally available biomass can be used more efficiently as a source for renewable energy and bio-based products. Therefore, not only is the theoretical perspective considered, but also a reality check for the local situation is taken into account. Although industrial attitude toward biorefineries is positive, the efficient production of a portfolio of bio-based products has not yet been implemented. A biorefinery concept for Moerdijk (the Netherlands) was developed, focusing on grass refining, production of pyrolysis oil, biodiesel production, and bio-LNG production. Grass refining is the most experimental technique of all proposed conversion techniques. In terms of development, pyrolysis oil and bio-LNG production are in the demonstration phase. Anaerobic digestion and biodiesel production are proven techniques. It is shown that this concept allows for synergies with regard to the utilization of residue flows from internal processes. Furthermore, it is demonstrated that by integrating different conversion technologies, an economically feasible concept can be developed in which technologies, currently residing in a demonstration phase, can also be brought to the market. (c) 2013 Society of Chemical Industry and John Wiley & Sons, Ltd | ||||
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| Language | Wos | 000342662200015 | Publication Date | 2013-11-20 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1932-104x | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.694 | Times cited | 18 | Open Access | |
| Notes | ; We would like to thank the editor and the anonymous referees for their helpful suggestions and insightful comments that have significantly improved the paper. The Energy Conversion Parks (ECP) project is funded by the Interreg IVa – Flanders-Netherlands program from the European Fund for Regional Development that stimulates cross-border projects. Also the Dutch Ministry of Economic Affairs, the Flemish Government, the Provinces of Noord-Brabant (NL), Zeeland (NL), Limburg (BE) and the partners (VITO, Avans University of Applied Sciences, Wageningen University and Research, Hasselt University, and Zeeland University of Applied Sciences) themselves are co-financing the project. We also would like to express our gratitude toward the organization of the 2nd Iberoamerican Congress on Biorefineries in Jaen (Spain) for giving us the opportunity to present and thereby fine-tune our work. ; | Approved | Most recent IF: 3.694; 2014 IF: 4.214 | ||
| Call Number | UA @ admin @ c:irua:127541 | Serial | 6180 | ||
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| Author | Tomasi, N.; Mimmo, T.; Terzano, R.; Alfeld, M.; Janssens, K.; Zanin, L.; Pinton, R.; Varanini, Z.; Cesco, S. | ||||
| Title | Nutrient accumulation in leaves of Fe-deficient cucumber plants treated with natural Fe complexes | Type | A1 Journal article | ||
| Year | 2014 | Publication | Biology and fertility of soils | Abbreviated Journal | Biol Fert Soils |
| Volume | 50 | Issue | 6 | Pages | 973-982 |
| Keywords | A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) | ||||
| Abstract | Plants mainly rely on a mixture of Fe complexes with different organic ligands, like carboxylates and soluble fractions of water-extractable humic substances (WEHSs), to sustain the supply of this micronutrient. It has been demonstrated that the Fe-WEHS complex is more efficiently acquired by plant roots as it enhances functionality of the mechanisms involved in Fe acquisition at the root and leaf levels, allowing a faster recovery of the Fe-deficiency symptoms. The aim of this work is to verify whether this recovery involves also the allocation and accumulation of nutrients other than Fe to and within the leaf tissues. Iron-deficient plants treated with Fe-WEHS recovered more quickly the functionality both to uptake nitrate at the root level and to fixate CO2 in the leaves than those supplied with Fe-citrate. Concomitantly, Fe-WEHS-treated plants also accumulated other cationic nutrients faster and at a higher extent. Synchrotron 2D-scanning μ-X-ray fluorescence analyses of the leaves revealed that the recovery promotes a change in the allocation of these nutrients from the vascular system (K, Cu, and Zn) or trichomes (Ca and Mn) to the entire leaf blade. Fe-WEHS treatment efficiently promotes the recovery from Fe-deficiency-induced chlorosis with an enhanced allocation of other nutrients into the leaves and promoting their distribution into the entire leaf blade. | ||||
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| Language | Wos | 000339880800010 | Publication Date | 2014-04-24 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0178-2762 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.683 | Times cited | 25 | Open Access | |
| Notes | ; Research was supported by grants from Italian MIUR (FIRB-Programma “Futuro in Ricerca”) and Free University of Bolzano (TN5056). Synchrotron experiments at HASYLAB were financially supported by the European Community-Research Infrastructure Action under the FP6 “Structuring the European Research Area” Program I (Integrating Activity on Synchrotron and Free Electron Laser Science; project: contract RII3-CT-2004-506008). The authors acknowledge support from the Hercules fund, Brussels (grant A11/0387), and from FWO (Brussels) via grant G.0C12.13. ; | Approved | Most recent IF: 3.683; 2014 IF: 3.398 | ||
| Call Number | UA @ admin @ c:irua:116597 | Serial | 5753 | ||
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| Author | Attri, P.; Kaushik, N.K.; Kaushik, N.; Hammerschmid, D.; Privat-Maldonado, A.; De Backer, J.; Shiratani, M.; Choi, E.H.; Bogaerts, A. | ||||
| Title | Plasma treatment causes structural modifications in lysozyme, and increases cytotoxicity towards cancer cells | Type | A1 Journal Article | ||
| Year | 2021 | Publication | International Journal Of Biological Macromolecules | Abbreviated Journal | Int J Biol Macromol |
| Volume | 182 | Issue | Pages | 1724-1736 | |
| Keywords | A1 Journal Article; Lysozyme; Cold atmospheric plasma; Cancer cell death; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; | ||||
| Abstract | Bacterial and mammalian proteins, such as lysozyme, are gaining increasing interest as anticancer drugs. This study aims to modify the lysozyme structure using cold atmospheric plasma to boost its cancer cell killing effect. We investigated the structure at acidic and neutral pH using various experimental techniques (circular dichroism, fluorescence, and mass spectrometry) and molecular dynamics simulations. The controlled structural modification of lysozyme at neutral pH enhances its activity, while the activity was lost at acidic pH at the same treatment conditions. Indeed, a larger number of amino acids were oxidized at acidic pH after plasma treatment, which results in a greater distortion of the lysozyme structure, whereas only limited structural changes were observed in lysozyme after plasma treatment at neutral pH. We found that the plasma-treated lysozyme significantly induced apoptosis to the cancer cells. Our results reveal that plasma-treated lysozyme could have potential as a new cancer cell killing drug. | ||||
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| Language | Wos | 000675794700005 | Publication Date | 2021-05-27 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0141-8130 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.671 | Times cited | Open Access | OpenAccess | |
| Notes | Japan Society for the Promotion of Science; We gratefully acknowledge the European H2020 Marie SkłodowskaCurie Actions Individual Fellowship “Anticancer-PAM” within Horizon2020 (grant number 743546). This work was also supported by JSPS-KAKENHI grant number 20K14454. NK thanks to National Research Foundation of Korea under Ministry of Science and ICT (NRF2021R1C1C1013875) of Korean Government. The computational work was carried out using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UA), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UA. | Approved | Most recent IF: 3.671 | ||
| Call Number | PLASMANT @ plasmant @c:irua:178813 | Serial | 6792 | ||
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| Author | Borkowski, R.; Straub, M.; Ou, Y.; Lefevre, Y.; Jelić, Ž.L.; Lanneer, W.; Kaneda, N.; Mahadevan, A.; Hueckstaedt, V.; van Veen, D.; Houtsma, V.; Coomans, W.; Bonk, R.; Maes, J. | ||||
| Title | FLCS-PON : a 100 Gbit/s flexible passive optical network: concepts and field trial | Type | A1 Journal article | ||
| Year | 2021 | Publication | Journal Of Lightwave Technology | Abbreviated Journal | J Lightwave Technol |
| Volume | 39 | Issue | 16 | Pages | 5314-5324 |
| Keywords | A1 Journal article; Mass communications; Condensed Matter Theory (CMT) | ||||
| Abstract | We demonstrate concepts and results of a field trial for a flexible-rate passive optical network (FLCS-PON), which delivers bitrates up to 100 Gbit/s and allows for adaptations in the transmission method to match the users' channel conditions and optimize throughput. FLCS-PON builds on top of the hardware ecosystem that will be developed for ITU-T 50 Gbit/s PON and employs three new ingredients: optical network unit (ONU) grouping, flexible modulation format, and flexible forward error correction (FEC) code rate. Together, these techniques take advantage of the optical distribution network (ODN) statistics to realize a system capable of more than twofold throughput increase compared to the upcoming 50 Gbit/s PON, but still able to support a full array of deployed fiber edge cases, which are problematic for legacy PONs. In this paper we explain the concepts behind enabling techniques of FLCS-PON. We then report on a field trial over a deployed fiber infrastructure, using a system consisting of one FLCS-PON OLT and two ONUs. We report both pre- and post-forward-error-correction (post-FEC) performance of our system, demonstrating achievable net bitrate over an operator's fiber infrastructure. We realize a downlink transmission at double the speed of ITU-T 50 Gbit/s PON for ONUs exhibiting lower optical path loss (OPL), while simultaneously continue to support ONUs at high OPLs. We additionally realize a record-high 31.5 dB loss budget for 100 Gbit/s transmission using a direct-detection ONU with an optical preamplifier. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000692209800017 | Publication Date | 2021-08-06 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0733-8724 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.671 | Times cited | Open Access | Not_Open_Access | |
| Notes | Approved | Most recent IF: 3.671 | |||
| Call Number | UA @ admin @ c:irua:181586 | Serial | 6995 | ||
| Permanent link to this record | |||||
| Author | Filippousi, M.; Papadimitriou, S.A.; Bikiaris, D.N.; Pavlidou, E.; Angelakeris, M.; Zamboulis, D.; Tian, H.; Van Tendeloo, G. | ||||
| Title | Novel coreshell magnetic nanoparticles for Taxol encapsulation in biodegradable and biocompatible block copolymers : preparation, characterization and release properties | Type | A1 Journal article | ||
| Year | 2013 | Publication | International journal of pharmaceutics | Abbreviated Journal | Int J Pharmaceut |
| Volume | 448 | Issue | 1 | Pages | 221-230 |
| Keywords | A1 Journal article; Pharmacology. Therapy; Electron microscopy for materials research (EMAT) | ||||
| Abstract | Theranostic polymeric nanocarriers loaded with anticancer drug Taxol and superparamagnetic iron oxide nanocrystals have been developed for possible magnetic resonance imaging (MRI) use and cancer therapy. Multifunctional nanocarriers with a coreshell structure have been prepared by coating superparamagnetic Fe3O4 nanoparticles with block copolymer of poly(ethylene glycol)-b-poly(propylene succinate) with variable molecular weights of the hydrophobic block poly(prolylene succinate). The multifunctional polymer nano-vehicles were prepared using a nanoprecipitation method. Scanning transmission electron microscopy revealed the encapsulation of magnetic nanoparticles inside the polymeric matrix. Energy dispersive X-ray spectroscopy and electron energy loss spectroscopy mapping allowed us to determine the presence of the different material ingredients in a quantitative way. The diameter of the nanoparticles is below 250 nm yielding satisfactory encapsulation efficiency. The nanoparticles exhibit a biphasic drug release pattern in vitro over 15 days depending on the molecular weight of the hydrophobic part of the polymer matrix. These new systems where anti-cancer therapeutics like Taxol and iron oxide nanoparticles (IOs) are co-encapsulated into new facile polymeric nanoparticles, could be addressed as potential multifunctional vehicles for simultaneous drug delivery and targeting imaging as well as real time monitoring of therapeutic effects. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000319052000026 | Publication Date | 2013-03-21 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0378-5173; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.649 | Times cited | 29 | Open Access | |
| Notes | Countatoms | Approved | Most recent IF: 3.649; 2013 IF: 3.785 | ||
| Call Number | UA @ lucian @ c:irua:107348 | Serial | 2374 | ||
| Permanent link to this record | |||||
| Author | Filippousi, M.; Turner, S.; Leus, K.; Siafaka, P.I.; Tseligka, E.D.; Vandichel, M.; Nanaki, S.G.; Vizirianakis, I.S.; Bikiaris, D.N.; Van Der Voort, P.; Van Tendeloo, G. | ||||
| Title | Biocompatible Zr-based nanoscale MOFs coated with modified poly(epsilon-caprolactone) as anticancer drug carriers | Type | A1 Journal article | ||
| Year | 2016 | Publication | International journal of pharmaceutics | Abbreviated Journal | Int J Pharmaceut |
| Volume | 509 | Issue | 509 | Pages | 208-218 |
| Keywords | A1 Journal article; Pharmacology. Therapy; Electron microscopy for materials research (EMAT) | ||||
| Abstract | Nanoscale Zr-based metal organic frameworks (MOFs) UiO-66 and UiO-67 were studied as potential anticancer drug delivery vehicles. Two model drugs were used, hydrophobic paclitaxel and hydrophilic cisplatin, and were adsorbed onto/into the nano MOFs (NMOFs). The drug loaded MOFs were further encapsulated inside a modified poly(epsilon-caprolactone) with d-alpha-tocopheryl polyethylene glycol succinate polymeric matrix, in the form of microparticles, in order to prepare sustained release formulations and to reduce the drug toxicity. The drugs physical state and release rate was studied at 37 degrees C using Simulated Body Fluid. It was found that the drug release depends on the interaction between the MOFs and the drugs while the controlled release rates can be attributed to the microencapsulated formulations. The in vitro antitumor activity was assessed using HSC-3 (human oral squamous carcinoma; head and neck) and U-87 MG (human glioblastoma grade IV; astrocytoma) cancer cells. Cytotoxicity studies for both cell lines showed that the polymer coated, drug loaded MOFs exhibited better anticancer activity compared to free paclitaxel and cisplatin solutions at different concentrations. | ||||
| Address | EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Wos | 000378949800022 | Publication Date | 2016-05-27 |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0378-5173 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.649 | Times cited | 37 | Open Access | |
| Notes | This work is performed within the framework of the IAP-P7/05. S.T. Gratefully acknowledges the Fund for Scientific Research Flanders (FWO). K.L. acknowledges the financial support from the Ghent University BOF postdoctoral grant 01P06813T and UGent GOA Grant 01G00710. | Approved | Most recent IF: 3.649 | ||
| Call Number | c:irua:134039 | Serial | 4088 | ||
| Permanent link to this record | |||||
| Author | Eleftheriadis, G.K.; Filippousi, M.; Tsachouridou, V.; Darda, M.-A.; Sygellou, L.; Kontopoulou, I.; Bouropoulos, N.; Steriotis, T.; Charalambopoulou, G.; Vizirianakis, I.S.; Van Tendeloo, G.; Fatouros, D.G. | ||||
| Title | Evaluation of mesoporous carbon aerogels as carriers of the non-steroidal anti-inflammatory drug ibuprofen | Type | A1 Journal article | ||
| Year | 2016 | Publication | International journal of pharmaceutics | Abbreviated Journal | Int J Pharmaceut |
| Volume | 515 | Issue | 515 | Pages | 262-270 |
| Keywords | A1 Journal article; Pharmacology. Therapy; Electron microscopy for materials research (EMAT) | ||||
| Abstract | Towards the development of novel drug carriers for oral delivery of poorly soluble drugs mesoporous aerogel carbons (CAs), namely CA10 and CA20 with different pore sizes (10 and 20 nm, respectively), were evaluated. The non-steroidal anti-inflammatory lipophilic compound ibuprofen was incorporated via passive loading. The drug loaded carbon aerogels were systemically investigated by means of High-Resolution Transmission Electron Microscopy (HR-TEM), Nitrogen physisorption studies, X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC), X-ray photon electron spectroscopy (XPS) and zeta-potential studies. In vitro release studies were performed in simulated intestinal fluids reflecting both fasted (FaSSIF) and fed (FeSSIF) state conditions. Cytotoxicity studies were conducted with human intestinal cells (Caco-2). Drug was in an amorphous state in the pores of the carbon carrier as shown from the physicochemical characterization studies. The results showed marked differences in the release profiles for ibuprofen from the two aerogels in the media tested whereas in vitro toxicity profiles appear to be compatible with potential therapeutic applications at low concentrations. (C) 2016 Elsevier B.V. All rights reserved. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000389150700024 | Publication Date | 2016-10-08 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0378-5173 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.649 | Times cited | 7 | Open Access | |
| Notes | Approved | Most recent IF: 3.649 | |||
| Call Number | UA @ lucian @ c:irua:140231 | Serial | 4441 | ||
| Permanent link to this record | |||||
| Author | Gorlé, C.; van Beeck, J.; Rambaud, P.; Van Tendeloo, G. | ||||
| Title | CFD modelling of small particle dispersion: the influence of the turbulence kinetic energy in the atmospheric boundary layer | Type | A1 Journal article | ||
| Year | 2009 | Publication | Atmospheric environment : an international journal | Abbreviated Journal | Atmos Environ |
| Volume | 43 | Issue | 3 | Pages | 673-681 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | When considering the modelling of small particle dispersion in the lower part of the Atmospheric Boundary Layer (ABL) using Reynolds Averaged Navier Stokes simulations, the particle paths depend on the velocity profile and on the turbulence kinetic energy, from which the fluctuating velocity components are derived to predict turbulent dispersion. It is therefore important to correctly reproduce the ABL, both for the velocity profile and the turbulence kinetic energy profile. For RANS simulations with the standard kå model, Richards and Hoxey (1993. Appropriate boundary conditions for computational wind engineering models using the kå turbulence model. Journal of Wind Engineering and Industrial Aerodynamics 4647, 145153.) proposed a set of boundary conditions which result in horizontally homogeneous profiles. The drawback of this method is that it assumes a constant profile of turbulence kinetic energy, which is not always consistent with field or wind tunnel measurements. Therefore, a method was developed which allows the modelling of a horizontally homogeneous turbulence kinetic energy profile that is varying with height. By comparing simulations performed with the proposed method to simulations performed with the boundary conditions described by Richards and Hoxey (1993. Appropriate boundary conditions for computational wind engineering models using the kå turbulence model. Journal of Wind Engineering and Industrial Aerodynamics 4647, 145153.), the influence of the turbulence kinetic energy on the dispersion of small particles over flat terrain is quantified. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Oxford | Editor | ||
| Language | Wos | 000262737900023 | Publication Date | 2008-10-16 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1352-2310; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.629 | Times cited | 79 | Open Access | |
| Notes | Iwt | Approved | Most recent IF: 3.629; 2009 IF: 3.139 | ||
| Call Number | UA @ lucian @ c:irua:76016 | Serial | 306 | ||
| Permanent link to this record | |||||
| Author | Nakiboglu, G.; Gorlé, C.; Horvath, I.; van Beeck, J.; Blocken, B. | ||||
| Title | Stack gas dispersion measurements with large scale-PIV, aspiration probes and light scattering techniques and comparison with CFD | Type | A1 Journal article | ||
| Year | 2009 | Publication | Atmospheric environment : an international journal | Abbreviated Journal | Atmos Environ |
| Volume | 43 | Issue | 21 | Pages | 3396-3406 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | The main purpose of this research is to manage simultaneous measurement of velocity and concentration in large cross-sections by recording and processing images of cloud structures to provide more detailed information for e.g. validation of CFD simulations. Dispersion from an isolated stack in an Atmospheric Boundary Layer (ABL) was chosen as the test case and investigated both experimentally and numerically in a wind tunnel. Large Scale-Particle Image Velocimetry (LS-PIV), which records cloud structures instead of individual particles, was used to obtain the velocity field in a vertical plane. The concentration field was determined by two methods: Aspiration Probe (AP) measurements and Light Scattering Technique (LST). In the latter approach, the same set of images used in the LS-PIV was employed. The test case was also simulated using the CFD solver FLUENT 6.3. Comparison between AP measurements and CFD revealed that there is good agreement when using a turbulent Schmidt number of 0.4. For the LST measurements, a non-linear relation between concentration and light intensity was observed and a hyperbolic-based function is proposed as correction function. After applying this correction function, a close agreement between CFD and LST measurements is obtained. (C) 2009 Elsevier Ltd. All rights reserved. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Oxford | Editor | ||
| Language | Wos | 000267529600013 | Publication Date | 2009-04-08 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1352-2310; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.629 | Times cited | 15 | Open Access | |
| Notes | Approved | Most recent IF: 3.629; 2009 IF: 3.139 | |||
| Call Number | UA @ lucian @ c:irua:94531 | Serial | 3147 | ||
| Permanent link to this record | |||||
| Author | García Sánchez, C.; Van Tendeloo, G.; Gorle, C. | ||||
| Title | Quantifying inflow uncertainties in RANS simulations of urban pollutant dispersion | Type | A1 Journal article | ||
| Year | 2017 | Publication | Atmospheric environment : an international journal | Abbreviated Journal | Atmos Environ |
| Volume | 161 | Issue | Pages | 263-273 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | Numerical simulations of flow and pollutant dispersion in urban environments have the potential to support design and policy decisions that could reduce the population's exposure to air pollution. Reynolds-averaged Navier-Stokes simulations are a common modeling technique for urban flow and dispersion, but several sources of uncertainty in the simulations can affect the accuracy of the results. The present study proposes a method to quantify the uncertainty related to variability in the inflow boundary conditions. The method is applied to predict flow and pollutant dispersion in downtown Oklahoma City and the results are compared to field measurements available from the Joint Urban 2003 measurement campaign. Three uncertain parameters that define the inflow profiles for velocity, turbulence kinetic energy and turbulence dissipation are defined: the velocity magnitude and direction, and the terrain roughness length. The uncertain parameter space is defined based on the available measurement data, and a non-intrusive propagation approach that employs 729 simulations is used to quantify the uncertainty in the simulation output. A variance based sensitivity analysis is performed to identify the most influential uncertain parameters, and it is shown that the predicted tracer concentrations are influenced by all three uncertain variables. Subsequently, we specify different probability distributions for the uncertain inflow variables based on the available measurement data and calculate the corresponding means and 95% confidence intervals for comparison with the field measurements at 35 locations in downtown Oklahoma City. (C) 2017 Elsevier Ltd. All rights reserved. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Oxford | Editor | ||
| Language | Wos | 000403515900025 | Publication Date | 2017-04-19 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1352-2310 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.629 | Times cited | 17 | Open Access | OpenAccess |
| Notes | ; The first author's contribution to this work was supported by the doctoral (PhD) grant number 131423 for strategic basic research from the Agency for Innovation by Science and Technology in Flanders (IWT). This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number CTS160009 (Towns et al., 2014). ; | Approved | Most recent IF: 3.629 | ||
| Call Number | UA @ lucian @ c:irua:145761 | Serial | 4749 | ||
| Permanent link to this record | |||||
| Author | Wuyts, K.; Hofman, J.; van Wittenberghe, S.; Nuyts, G.; De Wael, K.; Samson, R. | ||||
| Title | A new opportunity for biomagnetic monitoring of particulate pollution in an urban environment using tree branches | Type | A1 Journal article | ||
| Year | 2018 | Publication | Atmospheric environment : an international journal | Abbreviated Journal | Atmos Environ |
| Volume | 190 | Issue | 190 | Pages | 177-187 |
| Keywords | A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) | ||||
| Abstract | Environmental magnetism, and the magnetic leaf signal in particular, is amply investigated and applied as proxy for atmospheric particulate matter pollution. In this study, we investigated the magnetic signal of annual segments of tree branches, and the composition of particles deposited hereon. Branches are, contrary to leaves of deciduous trees, available during leaf-off seasons and exposed to air pollution year-round. We examined the intra- and inter-tree variation in saturation isothermal remanent magnetization (SIRM) of branch internodes of London plane (Platanus x aeerifolia Willd.) trees in an urban environment. The branch SIRM, normalized by surface area, ranged from 18 to 650 x 10(-6) angstrom; the median amounted to 106 x 10(-6) angstrom. Most of the branch magnetic signal was attributed to the epidermis or bark, and the presence of metal-containing particles on the branch surfaces was confirmed by SEM-EDX. The location of the trees and the height, the depth in the crown and the age of the branches significantly influenced the branch SIRM. The median branch SIRM was up to 135% higher near a busy ring road than in quiet environments (city park and quiet street canyon), and was linked to the presence of Fe-rich particles with co-occurrence of trace metals such as Cr, Cu, Zn and Mn on the branch surface. Within the tree crowns, the branch SIRM generally decreased with increasing height, and was 22% higher in the interior than at the periphery of the crowns. Within the branches, the SIRM increased with each year of exposure, but did not relate to year-to-year variation in particle concentrations due to branch surface changes (epidermis shedding). Our results provide indications that branches can be a valuable alternative for biomagnetic monitoring of particulate pollution, but intra-tree variability in branch SIRM can be substantial due to the branch's location in the tree and branch age. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000444659400017 | Publication Date | 2018-07-11 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1352-2310 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.629 | Times cited | 3 | Open Access | |
| Notes | ; We would like to thank the city council services of the city of Antwerp for their logistical support. We are grateful to Ana Castanheiro and Leen Van Ham for laboratory and SEM assistance. JH is supported as postdoctoral fellow of the Research Foundation Flanders (FWO; 12I4816N) and SVW is supported by a Marie Sklodowska-Curie Individual Fellowship under the grant agreement no 701815 FLUOPHOT. ; | Approved | Most recent IF: 3.629 | ||
| Call Number | UA @ admin @ c:irua:153607 | Serial | 5454 | ||
| Permanent link to this record | |||||
| Author | Lauriks, T.; Longo, R.; Baetens, D.; Derudi, M.; Parente, A.; Bellemans, A.; van Beeck, J.; Denys, S. | ||||
| Title | Application of improved CFD modeling for prediction and mitigation of traffic-related air pollution hotspots in a realistic urban street | Type | A1 Journal article | ||
| Year | 2021 | Publication | Atmospheric Environment | Abbreviated Journal | Atmos Environ |
| Volume | 246 | Issue | Pages | 118127 | |
| Keywords | A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) | ||||
| Abstract | The correct prediction of air pollutants dispersed in urban areas is of paramount importance to safety, public health and a sustainable environment. Vehicular traffic is one of the main sources of nitrogen oxides (NO ) and particulate matter (PM), strongly related to human morbidity and mortality. In this study, the pollutant level and distribution in a section of one of the main road arteries of Antwerp (Belgium, Europe) are analyzed. The assessment is performed through computational fluid dynamics (CFD), acknowledged as a powerful tool to predict and study dispersion phenomena in complex atmospheric environments. The two main traffic lanes are modeled as emitting sources and the surrounding area is explicitly depicted. A Reynolds-averaged Navier–Stokes (RANS) approach specific for Atmospheric Boundary Layer (ABL) simulations is employed. After a validation on a wind tunnel urban canyon test case, the dispersion within the canopy of two relevant urban pollutants, nitrogen dioxide (NO) and particulate matter with an aerodynamic diameter smaller than 10 m (PM10), is studied. An experimental field campaign led to the availability of wind velocity and direction data, as well as PM10 concentrations in some key locations within the urban canyon. To accurately predict the concentration field, a relevant dispersion parameter, the turbulent Schmidt number, , is prescribed as a locally variable quantity. The pollutant distributions in the area of interest – exhibiting strong heterogeneity – are finally demonstrated, considering one of the most frequent and concerning wind directions. Possible local remedial measures are conceptualized, investigated and implemented and their outcomes are directly compared. A major goal is, by realistically reproducing the district of interest, to identify the locations inside this intricate urban canyon where the pollutants are stagnating and to analyze which solution acts as best mitigation measure. It is demonstrated that removal by electrostatic precipitation (ESP), an active measure, and by enhancing the dilution process through wind catchers, a passive measure, are effective for local pollutant removal in a realistic urban canyon. It is also demonstrated that the applied ABL methodology resolves some well known problems in ABL dispersion modeling. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000613550100003 | Publication Date | 2020-12-07 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1352-2310 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.629 | Times cited | Open Access | OpenAccess | |
| Notes | Approved | Most recent IF: 3.629 | |||
| Call Number | UA @ admin @ c:irua:173917 | Serial | 7477 | ||
| Permanent link to this record | |||||
| Author | Meynen, V.; Cool, P.; Vansant, E.F.; Kortunov, P.; Grinberg, F.; Kärger, J.; Mertens, M.; Lebedev, O.I.; Van Tendeloo, G. | ||||
| Title | Deposition of vanadium silicalite-1 nanoparticles on SBA-15 materials: structural and transport characteristics of SBA-VS-15 | Type | A1 Journal article | ||
| Year | 2007 | Publication | Microporous and mesoporous materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 99 | Issue | 1/2 | Pages | 14-22 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000243845200003 | Publication Date | 2006-10-28 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 23 | Open Access | |
| Notes | FWO; GOA; Inside-Pores NoE (FP-EU) | Approved | Most recent IF: 3.615; 2007 IF: 2.210 | ||
| Call Number | UA @ lucian @ c:irua:61567 | Serial | 647 | ||
| Permanent link to this record | |||||
| Author | Ribbens, S.; Meynen, V.; Van Tendeloo, G.; Ke, X.; Mertens, M.; Maes, B.U.W.; Cool, P.; Vansant, E.F. | ||||
| Title | Development of photocatalytic efficient Ti-based nanotubes and nanoribbons by conventional and microwave assisted synthesis strategies | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 114 | Issue | 1/3 | Pages | 401-409 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Organic synthesis (ORSY) | ||||
| Abstract | Titanate nanotubes were prepared via a hydrothermal treatment of TiO2 powders (Riedel De Haen) in a basic solution. Morphology and structure of the prepared samples were characterized by high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), XRD, FT-Raman spectroscopy, nitrogen sorption and DSC. The photocatalytic activity was evaluated by photocatalytic oxidation of rhodamine 6G. Trititanate nanotubes (TTNT) with inner pore diameters between 4 and 4.2 nm and surface areas up till 360 m(2)/g could be synthesized. The synthesis route was modified by introduction of a calcination step, by applying a lower hydrothermal temperature and microwave irradiation in order to increase the photocatalytic activity of the porous photoactive nanotubular materials. Calcination and a softer hydrothermal treatment led to the formation of anatase without affecting the surface area and nanotubular shape of the samples. In this way, the photocatalytic activity of the original trititanate nanotubes could be significantly increased. By making use of microwave assisted synthesis, the photocatalytic activity call also be increased due to the presence of anatase. However, by applying microwave synthesis, a different structure was obtained, nanoribbons (NR) instead of nanotubcs, resulting in a decrease in surface area and porosity. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000258432100040 | Publication Date | 2008-02-01 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 47 | Open Access | |
| Notes | Fwo; Crp (Ua) | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | ||
| Call Number | UA @ lucian @ c:irua:69696 | Serial | 683 | ||
| Permanent link to this record | |||||
| Author | Filippousi, M.; Turner, S.; Katsikini, M.; Pinakidou, F.; Zamboulis, D.; Pavlidou, E.; Van Tendeloo, G. | ||||
| Title | Direct observation and structural characterization of natural and metal ion-exchanged HEU-type zeolites | Type | A1 Journal article | ||
| Year | 2015 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 210 | Issue | 210 | Pages | 185-193 |
| Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
| Abstract | The atomic structure of natural HEU-type zeolite and two ion-exchanged variants of the zeolite, Ag+ (Ag-HEU) and Zn2+ (Zn-HEU) ion exchanged HEU-type zeolites, are investigated using advanced transmission electron microscopy techniques in combination with X-ray powder diffraction and X-ray absorption fine structure measurements. In both ion-exchanged materials, loading of the natural HEU zeolite is confirmed. Using low-voltage, aberration-corrected transmission electron microscopy at low-dose conditions, the local crystal structure of natural HEU-type zeolite is determined and the interaction of the ion-exchanged natural zeolites with the Ag+ and Zn2+ ions is studied. In the case of Ag-HEU, the presence of Ag+ ions and clusters at extra-framework sites as well as Ag nanoparticles has been confirmed. The Ag nanoparticles are preferentially positioned at the zeolite surface. For Zn-HEU, no large Zn(O) nanopartides are present, instead, the HEU channels are evidenced to be decorated by small Zn(O) clusters. (c) 2015 Elsevier Inc. All rights reserved. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000353733300024 | Publication Date | 2015-02-13 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 5 | Open Access | |
| Notes | 246791 Countatoms; Iap-Pai; Fwo | Approved | Most recent IF: 3.615; 2015 IF: 3.453 | ||
| Call Number | c:irua:126006 | Serial | 715 | ||
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| Author | Stevens, W.J.J.; Mertens, M.; Mullens, S.; Thijs, I.; Van Tendeloo, G.; Cool, P.; Vansant, E.F. | ||||
| Title | Formation mechanism of SBA-16 spheres and control of their dimensions | Type | A1 Journal article | ||
| Year | 2006 | Publication | Microporous and mesoporous materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 93 | Issue | Pages | 119-124 | |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000239252700014 | Publication Date | 2006-03-24 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 34 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2006 IF: 2.796 | |||
| Call Number | UA @ lucian @ c:irua:58822 | Serial | 1252 | ||
| Permanent link to this record | |||||
| Author | van Oers, C.J.; Stevens, W.J.J.; Bruijn, E.; Mertens, M.; Lebedev, O.I.; Van Tendeloo, G.; Meynen, V.; Cool, P. | ||||
| Title | Formation of a combined micro- and mesoporous material using zeolite Beta nanoparticles | Type | A1 Journal article | ||
| Year | 2009 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 120 | Issue | 1/2 | Pages | 29-34 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | Composite micro- and mesoporous materials are synthesized using zeolite Beta nanoparticles without the need for a structure directing agent to form the mesopores. This leads to important ecological and economical advantages. The influence of the way of cooling the aged nanoparticles solution on the formation of the composite materials has been studied. The materials have been characterized towards porosity by N2-sorption, towards zeolitic properties by TGA, DRIFT, XRD and TEM, towards aluminium content by EPMA. All prepared structures possess zeolitic properties. However, the method of cooling down of the aged seeds leads to differences in the porosity and intensity of the zeolitic characteristics. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000264619200006 | Publication Date | 2008-09-12 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 42 | Open Access | |
| Notes | Crp; Sfr Ua | Approved | Most recent IF: 3.615; 2009 IF: 2.652 | ||
| Call Number | UA @ lucian @ c:irua:74950 | Serial | 1254 | ||
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| Author | de Clippel, F.; Harkiolakis, A.; Vosch, T.; Ke, X.; Giebeler, L.; Oswald, S.; Houthoofd, K.; Jammaer, J.; Van Tendeloo, G.; Martens, J.A.; Jacobs, P.A.; Baron, G.V.; Sels, B.F.; Denayer, J.F.M. | ||||
| Title | Graphitic nanocrystals inside the pores of mesoporous silica : synthesis, characterization and an adsorption study | Type | A1 Journal article | ||
| Year | 2011 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 144 | Issue | 1/3 | Pages | 120-133 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
| Abstract | This work presents a new carbonsilica hybrid material, denoted as CSM, with remarkable sorption properties. It consists of intraporous graphitic nanocrystals grown in the pores of mesoporous silica. CSM is obtained by a subtle incipient wetness impregnation of Al-containing mesoporous silica with furfuryl alcohol (FA)/hemelitol solutions. Both the volume match of the impregnation solution with that of the silica template pore volume, and the presence of Al3+ in the silica, are crucial to polymerize FA selectively inside the mesopores. Carbonization of the intraporous polymer was then performed by pyrolysis under He up to 1273 K. The resulting CSMs were examined by SEM, HRTEM, 27Al MAS NMR, N2 adsorption, XRD, TGA, TPD, XPS, pycnometry and Raman spectroscopy. Mildly oxidized graphitic-like carbon nanoblocks, consisting of a few graphene-like sheets, were thus identified inside the template mesopores. Random stacking of these carbon crystallites generates microporosity resulting in biporous materials at low carbon content and microporous materials at high carbon loadings. Very narrow pore distributions were obtained when pyrolysis was carried out under slow heating rate, viz. 1 K min−1. Adsorption and shape selective properties of the carbon filled mesoporous silica were studied by performing pulse chromatography and breakthrough experiments, and by measuring adsorption isotherms of linear and branched alkanes. Whereas the parent mesoporous silica shows unselective adsorption, their CSM analogues preferentially adsorb linear alkanes. The sorption capacity and selectivity can be adjusted by changing the pore size of the template or by varying the synthesis conditions. A relation between the carbon crystallites size and the shape selective behaviour of the corresponding CSM for instance is demonstrated. Most interestingly, CSM shows separation factors for linear and branched alkanes up to values comparable to those of zeolitic molecular sieves. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000293435400016 | Publication Date | 2011-04-15 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 15 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2011 IF: 3.285 | |||
| Call Number | UA @ lucian @ c:irua:92325 | Serial | 1380 | ||
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| Author | Oh, H.; Gennett, T.; Atanassov, P.; Kurttepeli, M.; Bals, S.; Hurst, K.E.; Hirscher, M. | ||||
| Title | Hydrogen adsorption properties of platinum decorated hierarchically structured templated carbons | Type | A1 Journal article | ||
| Year | 2013 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 177 | Issue | Pages | 66-74 | |
| Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
| Abstract | In this report, the possibility of Pt catalytic activity for the dissociation of hydrogen molecules and subsequent hydrogen adsorption on sucrose templated carbon at ambient temperature has been studied. In order to investigate Pt catalytic effect for hydrogen storage solely, 6.8 wt.% Pt-doped (Pt/TC) and pure templated carbon (TC) possessing almost identical specific surface area (SSA) and pore volume (Vp) have been successfully synthesized. Since both Pt/TC and TC shares for their textural properties (e.g. SSA and Vp), any difference of hydrogen adsorption characteristic and storage capacity can be ascribed to the presence of Pt nanoparticles. Both samples are characterized by various techniques such as powder Xray diffraction, ICP-OES, Raman spectroscopy, transmission electron microscopy, cryogenic thermal desorption spectroscopy, low-pressure high-resolution hydrogen and nitrogen BET and high-pressure hydrogen adsorption isotherms in a Sieverts' apparatus. By applying hydrogen and deuterium isotope mixture, cryogenic thermal desorption spectroscopy point to a Pt catalytic activity for the dissociation of hydrogen molecules. Furthermore, the hydrogen adsorption isotherms at RT indicate an enhancement of the initial hydrogen adsorption kinetics in Pt-doped system. However, the hydrogen storage capacity of Pt/TC exhibits a negligible enhancement with a strong hysteresis, suggesting no connection between the spillover effect and a feasible hydrogen storage enhancement. (C) 2013 Elsevier Inc. All rights reserved. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000322293000012 | Publication Date | 2013-04-28 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 25 | Open Access | |
| Notes | 262348 ESMI; COST Action MP1103 | Approved | Most recent IF: 3.615; 2013 IF: 3.209 | ||
| Call Number | UA @ lucian @ c:irua:109758 | Serial | 1532 | ||
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| Author | Wiktor, C.; Turner, S.; Zacher, D.; Fischer, R.A.; Van Tendeloo, G. | ||||
| Title | Imaging of intact MOF-5 nanocrystals by advanced TEM at liquid | Type | A1 Journal article | ||
| Year | 2012 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 162 | Issue | Pages | 131-135 | |
| Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) | ||||
| Abstract | First results on the imaging of intact metalorganic framework (MOF) pores in MOF-5 nanocrystals by aberration corrected transmission electron microscopy (TEM) under liquid nitrogen conditions are presented. The applied technique is certainly transferable to other MOF systems, permitting detailed studies of MOF interfaces, MOFnanoparticle interaction and MOF thin films. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000308284800018 | Publication Date | 2012-06-18 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 30 | Open Access | |
| Notes | Fwo | Approved | Most recent IF: 3.615; 2012 IF: 3.365 | ||
| Call Number | UA @ lucian @ c:irua:100467 | Serial | 1554 | ||
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| Author | Seftel, E.M.; Popovici, E.; Mertens, M.; Van Tendeloo, G.; Cool, P.; Vansant, E. | ||||
| Title | The influence of the cationic ratio on the incorporation of Ti4+ in the brucite-like sheets of layered double hydroxides | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 111 | Issue | 1-3 | Pages | 12-17 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | |||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000255847100004 | Publication Date | 2007-07-17 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor |
3.615 | Times cited | 29 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | |||
| Call Number | UA @ lucian @ c:irua:69136 | Serial | 1644 | ||
| Permanent link to this record | |||||