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- Neumann, N.M.P. (author), van Houte, R. (author), Attema, T. (author) conference paper 2020
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Peternella, F.G. (author), Esselink, T. (author), Dorsman, B. (author), Harmsma, P.J. (author), Horsten, R.C. (author), Zuidwijk, T. (author), Urbach, H.P. (author), Adam, A.L.C. (author)In this paper, the design and the characterization of a novel interrogator based on integrated Fourier transform (FT) spectroscopy is presented. To the best of our knowledge, this is the first integrated FT spectrometer used for the interrogation of photonic sensors. It consists of a planar spatial heterodyne spectrometer, which is implemented...article 2019
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Keizer, W.P.M.N. (author)This paper deals with the synthesis of monopulse antenna patterns, sum and difference ones, for planar phased array antennas with an elliptical aperture boundary featuring unequal ultra-low peak sidelobe levels (PSLLs) for the two principal planes of its far field. The used synthesis method is the iterative Fourier transform (IFT) approach. The...article 2019
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Pérez-Gallent, E. (author), Figueiredo, M.C. (author), Koper, M.T.M. (author)Efficient and selective electrosynthesis of propylene carbonate can be performed by the reaction of carbon dioxide with propylene oxide at copper electrodes. In this paper, we investigate this electrochemical reaction by using cyclic voltammetry, Fourier transform infrared spectroscopy and high-performance liquid chromatography in order to...article 2019
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- Sprung, D. (author), Sucher, E. (author), Grossmann, P. (author), Kociok, T. (author), van Eijk, A.M.J. (author), Stein, K. (author) conference paper 2019
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- Faber, A.J. (author), Cheng, L.K. (author), Gielesen, W.L.M. (author), Boussard-Plédel, C. (author), Maurugeon, S. (author), Bureau, B. (author), Zhang, X.H. (author), Lucas, J. (author), Pereira Do Carmo, J. (author) conference paper 2017
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Kachko, A. (author), van der Ham, L.V. (author), Bardow, A. (author), Vlugt, T.J.H. (author), Goetheer, E.L.V. (author)Chemical absorption of CO2 using aqueous amine-based solvents is one of the common approaches to control acidic gases emissions to the atmosphere. Improvement in the efficiency of industrial processes requires precise monitoring tools that fit with the specific application. Process monitoring using in-line multivariate measurement methods...article 2016
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Vos, H.J. (author), van Neer, P.L.M.J. (author), Verweij, M.D. (author), de Jong, N. (author), Volker, A.W.F. (author)Three-dimensional (3D) high resolution beamforming is made more difficult by high data rates. This can be overcome by two-step imaging approaches such as the synthetic aperture beamforming technique. In this technique the first step significantly reduces the data rate by line-based delay and sum, whereas the second stage recombines the data to a...conference paper 2015
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Khakharia, P.M. (author), Huizinga, A. (author), Jurado Lopez, C. (author), Sanchez Sanchez, C. (author), de Miguel Mercader, F. (author), Vlugt, T.J.H. (author), Goetheer, E.L.V. (author)Amine-based absorption-desorption processes are considered to be the state-of-the-art technology for CO2 capture. However, the typical amines used are susceptible to oxidative and thermal degradation. Ammonia is formed as a result of oxidative solvent degradation. Because of the volatility of ammonia, significant emissions of ammonia can occur....article 2014
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van Soestbergen, M. (author), Baukh, V. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Adan, O.C.G. (author)Carcinogenic chromates are phased out as corrosion inhibitors in organic coatings, and are replaced by benign alternatives. Cerium-based compounds are excellent corrosion inhibitors in an aqueous environment. However, whether they are effective as corrosion inhibitor in an organic coating also depends on their interaction with the coating matrix...article 2014
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Wu, Y. (author), Hermkens, P.M. (author), van de Loo, B.W.H. (author), Knoops, H.C.M. (author), Potts, S.E. (author), Verheijen, M.A. (author), Roozeboom, F. (author), Kessels, W.M.M. (author)In this work, the structural, electrical, and optical properties as well as chemical bonding state of Al-doped ZnO films deposited by atomic layer deposition have been investigated to obtain insight into the doping and electrical transport mechanisms in the films. The range in doping levels from 0% to 16.4% Al was accomplished by tuning the...article 2013
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van den Dool, T.C. (author), Kruizinga, B. (author), Braam, B.C. (author), Hamelinck, R.F.M.M. (author), Loix, N. (author), van Loon, D. (author), Dams, J. (author)TNO, together with its partners, have designed a cryogenic scanning mechanism for use in the SAFARI Fourier Transform Spectrometer (FTS) on board of the SPICA mission. SPICA is one of the M-class missions competing to be launched in ESA's Cosmic Vision Programme in 2022. JAXA leads the development of the SPICA satellite and SRON is the prime...conference paper 2012
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Chang, W.T. (author), Choi, Y.H. (author), van der Heijden, R. (author), Lee, M.S. (author), Lin, M.K. (author), Kong, H. (author), Kim, H.K. (author), Verpoorte, R. (author), Hankemeier, T. (author), van der Greef, J. (author), Wang, M. (author)The processing of biological raw materials is considered to have an important role in the therapeutic application in Traditional Chinese Medicine. The root of Rehmannia glutinosa has to be processed by nine cycles of rice wine immersing, steaming and drying before using in clinical applications. In order to understand the chemical changes...article 2011
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García, S.J. (author), Fischer, H.R. (author), White, P.A. (author), Mardel, J. (author), González-García, Y. (author), Mol, J.M.C. (author), Hughes, A.E. (author)In this paper a self-healing anticorrosive organic coating based on an encapsulated water reactive organic agent is presented. A reactive silyl ester is proposed as a new organic reactive healing agent and its synthesis, performance, incorporation into an organic coating and evaluation of self-healing capabilities is described. Such silyl esters...article 2011
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TNO Industrie en Techniek (author), van den Dool, T.C. (author), Hamelinck, R.F.M.M. (author), Kruizinga, B. (author), Gielesen, W.L.M. (author), Braam, B.C. (author), Nijenhuis, J.R. (author), Loix, N. (author), Luyckx, S. (author), van Loon, D. (author), Kooijman, P.P. (author), Swinyard, B.M. (author)TNO, together with its partners Micromega and SRON, have designed a cryogenic scanning mechanism for use in the SAFARI Fourier Transform Spectrometer (FTS) on board of the SPICA mission. The optics of the FTS scanning mechanism (FTSM) consists of two back-to-back cat's-eyes. The optics are mounted on a central "back-bone" tube which houses all...conference paper 2010
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Dragomir, O.E. (author), Tummers, M.J. (author), van Veen, E.H. (author), van der Heijden, A.E.D.M. (author), Roekaerts, D.J.E.M. (author), TNO Defensie en Veiligheid (author)This paper presents the results of a series of experiments on the condensed phase decomposition and the gas phase combustion of hydrazinium nitroformate (HNF). The experiments include SEM analysis of quenched samples that showed evidence of the formation of a foam layer. FTIR spectrometry and mass spectrometry provide details on species...article 2009
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Dos Santos Ferreira, O. (author), Stevens, A. (author), Schrauwen, C. (author), TNO Industrie en Techniek (author)A peel test device was used to monitor metal-polymer adhesion. This technique showed variations in the resulting force within 1%, and enabled the ranking of many systems. A change in the 50 nm-adhesion layer resulted in a variation of the fracture energy by a factor 2.3. A change of the substrate led to a change in adhesion by a factor 40. The...article 2009
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Kong, H. (author), Wang, M. (author), Venema, K. (author), Maathuis, A. (author), van der Heijden, R. (author), van der Greef, J. (author), Xu, G. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author)A high-performance liquid chromatography-high resolution Fourier transform ion cyclotron resonance mass spectrometry (HPLC-FTICR-MS) method was developed to investigate the metabolism of ginsenosides in in vitro models of the gastro-intestinal tract. The metabolites were identified by high-resolution tandem mass spectrometry. Degradation and...article 2009
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Angelova, N. (author), Kong, H.-W. (author), van de Heijden, R. (author), Yang, S.-Y. (author), Choi, Y.H. (author), Kim, H.K. (author), Wang, M. (author), Hankemeier, T. (author), van der Greef, J. (author), Xu, G. (author), Verpoorte, R. (author), TNO Kwaliteit van Leven (author)This review summarises the most recent developments in ginseng analysis, in particular the novel approaches in sample pre-treatment and the use of high-performance liquid-chromatography-mass spectrometry. The review also presents novel data on analysing ginseng extracts by nuclear magnetic resonance spectroscopy and high-resolution mass...article 2008
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Bobeldijk, I. (author), Hekman, M. (author), van der Vries de- Weij, J. (author), Coulier, L. (author), Ramaker, R. (author), Kleemann, R. (author), Kooistra, T. (author), Rubingh, C. (author), Freidig, A. (author), Verheij, E. (author), TNO Kwaliteit van Leven (author)We report a sensitive, generic method for quantitative profiling of bile acids and other endogenous metabolites in small quantities of various biological fluids and tissues. The method is based on a straightforward sample preparation, separation by reversed-phase high performance liquid-chromatography mass spectrometry (HPLC-MS) and electrospray...article 2008