Searched for: subject%3A%22NMR%22
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Nicasy, R. (author), Huinink, H. (author), Erich, B. (author), Olaf, A. (author)
article 2022
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Soete, J. (author), Claes, S. (author), Claes, H. (author), Erthal, M.M. (author), Hamaekers, H. (author), de Boever, E. (author), Foubert, A. (author), Klitzsch, N. (author), Swennen, R. (author)
Applying an integrated methodology, including petrography, Mercury Injection Capillary Pressure, laboratory Nuclear Magnetic Resonance and X‐ray Computed Tomography, on continental spring carbonate reservoir analogue samples is a prerequisite to understand plug scale porosity and permeability heterogeneities. Depending on the dominant pore type...
article 2022
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Nicasy, R. (author), Huinink, H.P. (author), Erich, S.J.F. (author), Adan, O.C.G. (author)
An improved High-Speed NMR profiling method is introduced that enables to measure capillary action in thin, non-transparent porous media. Liquid profiles can be measured as fast as 10 ms with a spatial resolution of 14.5 µm. Capillary absorption of microliter-sized droplets into non-transparent nylon-6,6 porous membranes was studied. In nylon-6...
article 2021
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Gezici-Koc, Ö. (author), Erich, S.J.F. (author), Huinink, H.P. (author), van der Ven, L.G.J. (author), Adan, O.C.G. (author)
In addition to the desired aesthetical properties, a coating is applied to protect against weathering. A coating prevents moisture accumulation in wood by reducing the water uptake into the wood by its barrier function. The studies in the coating permeability has gained interest with the shift towards waterborne coatings, which make coatings...
article 2019
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Valle da Silva, J.A. (author), Modesto-Costa, L. (author), de Koning, M.C. (author), Borges, I. (author), Costa França, T.C. (author)
In this work, quaternary and non-quaternary oximes designed to bind at the peripheral site of acetylcholinesterase previously inhibited by organophosphates were investigated theoretically. Some of those oximes have a large number of degrees of freedom, thus requiring an accurate method to obtain molecular geometries. For this reason, the density...
article 2018
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Kuijpers, C.J. (author), van Stiphout, T.A.P. (author), Huinink, H.P. (author), Tomozeiu, N. (author), Erich, S.J.F. (author), Adan, O.C.G. (author)
A 1D model based on Darcy's law is proposed to allow quantitative measurements of the penetration depth of water-glycerol-hexanediol mixtures in thin porous media using an Automatic Scanning Absorptometer (ASA). The limitations of this 1D model are discussed with respect to the nozzle dimensions and the liquid penetration depth. The penetration...
article 2018
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Barakat, A.J. (author), Pel, L. (author), Adan, O.C.G. (author)
In this study a specialized high-temperature nuclear magnetic resonance (NMR) setup is presented for measuring free moisture in monolithic refractory castables during one-sided heating (100–300 °C). This setup makes use of a high thermal-stability Birdcage-coil for measuring the quantitative moisture content at high-temperatures, while also...
article 2018
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Kuijpers, C.J. (author), Huinink, H.P. (author), Tomozeiu, N. (author), Erich, S.J.F. (author), Adan, O.C.G. (author)
Due to the increased use of nanoparticles in everyday applications, there is a need for theoretical descriptions of particle transport and attachment in porous media. It should be possible to develop a one dimensional model to describe nanoparticle retention during capillary transport of liquid mixtures in porous media. Water-glycerol...
article 2018
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Voogt, B. (author), Huinink, H. (author), Erich, S.J.F. (author), Scheerder, J. (author), Venema, P. (author), Adan, O.C.G. (author)
GARField 1H NMR relaxometry experiments were done to study the drying process of two latices with different polymer Tg and to elucidate water mobility behavior during this process. It was found that the hard type latex, with a polymer Tg above room temperature, dries faster than the soft type latex, with a polymer Tg below room temperature....
article 2018
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Gezici-Koç, Ö. (author), Erich, S.J.F. (author), Huinink, H.P. (author), van der Ven, L.G.J. (author), Adan, O.C.G. (author)
An important reason to apply coatings on wood is to protect wood against moisture. As a result of regulations and ecological concerns, there has been a shift towards waterborne coatings, which make coatings intrinsically more sensitive to water. As a consequence of the higher sensitivity to water, the durability of both wood and coatings can be...
article 2018
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da Silva, J.A.V. (author), Modesto-Costa, L. (author), de Koning, M.C. (author), Borges, I.Jr. (author), França, T.C.C. (author)
In this work, quaternary and non-quaternary oximes designed to bind at the peripheral site of acetylcholinesterase previously inhibited by organophosphates were investigated theoretically. Some of those oximes have a large number of degrees of freedom, thus requiring an accurate method to obtain molecular geometries. For this reason, the density...
article 2018
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Donkers, P.A.J. (author), Pel, L. (author), Adan, O.C.G. (author)
For heat/cold storage systems a granular bed of salt hydrates is studied during dehydration/hydration. The water density in these beds are measured with help of NMR. Diffusion based dehydration of a granular bed of Na2SO4·10H2O is shown to be internally limited as larger grains dehydrate faster than smaller grains as result of cooling of the...
article 2017
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Gezici-Koç, Ö. (author), Erich, S.J.F. (author), Huinink, H.P. (author), van der Ven, L.G.J. (author), Adan, O.C.G. (author)
Knowledge on moisture transport in wood is important for understanding its utilization, durability and product quality. Moisture transport processes in wood can be studied by Nuclear Magnetic Resonance (NMR) imaging. By combining NMR imaging with relaxometry, the state of water within wood can be identified, i.e. water bound to the cell wall,...
article 2017
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Adan, O.C.G. (author)
This article presents an experimental investigation on transport of methylhydroxyethylcellulose (MHEC) during drying of a model porous material. Nuclear magnetic resonance imaging and thermogravimetric analysis are used to measure water and MHEC transport, respectively. MHEC is added to glue mortars to increase open time, i.e., the time period...
article 2017
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Gezici-Koç, Ö. (author), Thomas, C.A.A.M. (author), Michel, M.E.B. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Flapper, J. (author), Duivenvoorde, F.L. (author), van der Ven, L.G.J. (author), Adan, O.C.G. (author)
As a result of potential reclassification of cobalt-based alkyd driers, many studies have been conducted to find suitable alternatives as primary driers in alkyd paints. Some commercial replacements are currently available. A systematic investigation on the oxidative drying of solventborne alkyd coatings with commercial cobalt-free driers has...
article 2016
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Adan, O.C.G. (author), Nijland, T.G. (author)
The influence ofmethylhydroxyethylcellulose (MHEC) on bothmoisture distribution and hydration characteristics
article 2016
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Donkers, P.A.J. (author), Pel, L. (author), Adan, O.C.G. (author)
Salt hydrates have promising potential as heat storage materials by use of their hydration/dehydration reaction. These hydration/dehydration reactions are studied in this paper for CuCl2, CuSO4, MgCl2 and MgSO4. During a hydration/dehydration reaction, the salt shrinks and expands as a result of the differences in densities of the phases. As a...
article 2016
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), van Soestbergen, M. (author), Huinink, H.P. (author), Adan, O.C.G. (author), Nijland, T.G. (author)
This article presents both an experimental as well as a theoretical study on the effect of MethylHy droxyEthylCellulose (MHEC) on drying in porous materials using Nuclear Magnetic Resonance Imaging (NMR). MHEC, a water soluble polymer, is normally added to glue mortars as a water retention agent in order to improve the drying by increasing...
article 2015
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Jacobs, D.M. (author), Mihaleva, V.V. (author), van Schalkwijk, D.B. (author), de Graaf, A.A. (author), Vervoort, J. (author), van Dorsten, F.A. (author), Ras, R.T. (author), Demonty, I. (author), Trautwein, E.A. (author), van Duynhoven, J. (author)
Scope: Consumption of a low-fat spread enriched with plant sterols (PS) and different low doses (<2 g/day) of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from fish oil reduces serum triglycerides (TGs) and low-density lipoprotein-cholesterol (LDL-Chol) and thus beneficially affects two blood lipid risk factors. Yet, their combined...
article 2015
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), Nijland, T.G. (author), Hunnink, H.P. (author), Adan, O.C.G. (author)
Cement based mortars are widely used as adhesive for tiles in building and construction. They have a limited timespan during which a tile can be placed effectively in order to develop sufficient bond strength. This timespan, usually called ’open time’, is controlled, amongst others, by adding water soluble polymers such as methyl cellulose or...
conference paper 2015
Searched for: subject%3A%22NMR%22
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