Searched for: subject:"Chemistry"
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Bruin-Hoegee, J.M. (author), Kleiweg, D. (author), Noort, D. (author), van Asten, A.C. (author)
Chemical attribution typically aims to establish a link between material found at a crime scene and a person, location or other evidence. In the field of illicit drugs, chemical attribution signatures are usually impurity profiles. Extending these to metabolized samples would create new possibilities in forensic investigations. The present study...
article 2021
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Bosilj, M. (author), Rustam, L. (author), Thomann, R. (author), Melke, J. (author), Fischer, A. (author), White, R.J. (author)
Selective hydrogenations in the aqueous phase are an important transformation in the context of developing biorefinery concepts. In this report the application and optimisation of nitrogen-doped carbon (NDC) supported Pd nanoparticles as hydrogenation catalysts is discussed in the context of directing support (e.g. N) chemistry for improved...
article 2020
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Verhoeckx, K. (author), lindholm Bøgh, K. (author), Constable, A. (author), Epstein, M.M. (author), hoffmann Sommergruber, K. (author), Holzhauser, T. (author), Houben, G. (author), Kuehn, A. (author), Roggen, E. (author), O'Mahony, L. (author), Remington, B. (author), Crevel, R. (author)
The growing world population and increased pressure on agricultural resources are driving a shortage of dietary protein sources. As a result, industry is developing more sustainable novel food protein sources such as insects, algae and duckweed and using new processing techniques. Consumer exposure to these novel or processed proteins, could...
article 2020
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Bezemer, K. (author), McLennan, L. (author), Hessels, R. (author), Schoorl, J. (author), van den Elshout, J.J.M.H. (author), van der Heijden, A.E.D.M. (author), Hulsbergen, A. (author), Koeberg, M. (author), Busby, T. (author), Yevdokimov, A. (author), Rijke, E. (author), Schoenmakers, P. (author), Smith, J. (author), Oxley, J. (author), van Asten, A. (author)
In this follow-up study the collaboration between two research groups from the USA and the Netherlands was continued to expand the framework of chemical attribution for the homemade explosive erythritol tetranitrate (ETN). Isotope ratio mass spectrometry (IRMS) analysis was performed to predict possible links between ETN samples and its...
article 2020
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Garcia, A.C. (author), Sánchez Martínez, C. (author), Bakker, I.J. (author), Goetheer, E.L.V. (author)
Herein, we describe a study of the electrochemical reduction of oxalic and glyoxylic acids toward a feasible green and sustainable production of tartaric acid in aqueous and/or acetonitrile solvent using silver and lead electrodes. Our results show that on the silver electrode, for both oxalic acid and glyoxylic acid, the reduction reaction is...
article 2020
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Remington, B.C. (author), Blom, W.M. (author), Bassa, B. (author), Koppelman, S.J. (author)
Allergic reactions to meals consumed outside the home are common and can be severe and sometimes fatal. Objective. To quantify the risk reduction potentially achieved by increasing an individual’s threshold sensitivity to peanut (such as by means of immunotherapy) in scenarios of peanut exposure through shared kitchen materials in a restaurant...
article 2020
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Desprez, B. (author), Birk, B. (author), Blaauboer, B. (author), Boobis, A. (author), Carmichael, P. (author), Cronin, M.T.D. (author), Curie, R. (author), Daston, G. (author), Hubesch, B. (author), Jennings, P. (author), Klaric, M. (author), Kroese, D. (author), Mahony, C. (author), Ouédraogo, G. (author), Piersma, A. (author), Richarz, A.N. (author), Schwarz, M. (author), van Benthem, J. (author), van de Water, B. (author), Vinken, M. (author)
Repeated dose toxicity evaluation aims at assessing the occurrence of adverse effects following chronic or repeated exposure to chemicals. Non-animal approaches have gained importance in the last decades because of ethical considerations as well as due to scientific reasons calling for more human-based strategies. A critical aspect of this...
article 2019
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Bisselink, R.J.M. (author), Crockatt, M. (author), Zijlstra, M. (author), Bakker, I.J. (author), Goetheer, E.L.V. (author), Slaghek, T.M. (author), van Es, D.S. (author)
The electrochemical production of valeric acid from the renewable bio-based feedstock levulinic acid has the potential to replace the oxo-process, which uses fossil-based feedstock 1-butylene. The electrochemical reduction of the ketone functionality in levulinic acid using lead or mercury cathodes has already been known for over 100 years....
article 2019
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Hendrickx, N.W. (author), Tagliaferri, M.L.V. (author), Kouwenhoven, M. (author), Li, R. (author), Franke, D.P. (author), Sammak, A. (author), Brinkman, A. (author), Scappucci, G. (author), Veldhorst, M. (author)
We fabricate Josephson field-effect transistors in germanium quantum wells contacted by superconducting aluminum and demonstrate supercurrents carried by holes that extend over junction lengths of several micrometers. In superconducting quantum point contacts we observe discretization of supercurrent, as well as Fabry-Perot resonances,...
article 2019
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Roozeboom, F. (author)
public lecture 2019
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Westerhout, J. (author), Krone, T. (author), Snippe, A. (author), Babé, L. (author), McClain, S.U. (author), Ladics, G.S. (author), Houben, G.G. (author), Verhoeckx, K.C. (author)
Alternative and sustainable protein sources (e.g., algae, duckweed, insects) are required to produce (future) foods. However, introduction of new food sources to the market requires a thorough risk assessment of nutritional, microbial and toxicological risks and potential allergic responses. Yet, the risk assessment of allergenic potential of...
article 2019
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Pandey, S. (author), Houweling, S. (author), Krol, M. (author), Aben, I. (author), Nechita-Banda, N. (author), Thoning, K. (author), Rockmann, T. (author), Yin, Y. (author), Segers, A.J. (author), Dlugokencky, E.J. (author)
We quantify the impact of atmospheric transport and limited marine boundary layer sampling on changes in global and regional methane burdens estimate using tracer transport model simulations with annually repeating methane emissions and sinks but varying atmospheric transport patterns. We find the 1σ error due to this transport and sampling...
article 2019
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Verkaaik, M. (author), Grote, R. (author), Meulendijks, N. (author), Sastre, F. (author), Weckhuysen, B.M. (author), Buskens, P. (author)
The interaction between plasmonic metal catalysts and visible light can be exploited to increase their catalytic activity. This activity increase results from the generation of hot charge carriers or hot surfaces, or a combination of both. We have studied the light-induced Suzuki-Miyaura cross-coupling reaction of bromobenzene and m-tolylboronic...
article 2019
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Escudero, M. (author), Segers, A. (author), Kranenburg, R. (author), Querol, X. (author), Alastuey, A. (author), Borge, R. (author), de la Paz, D. (author), Gangoiti, G. (author), Schaap, M. (author)
Tropospheric <span classCombining double low line"inline-formula">O3</span> remains a major air-quality issue in the Mediterranean region. The combination of large anthropogenic emissions of precursors, transboundary contributions, a warm and dry aestival climate, and topographical features results in severe cases of photochemical pollution....
article 2019
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Tans, R. (author), van Diepen, J.A. (author), Bijlsma, S. (author), Verschuren, L. (author), Suppers, A. (author), Stienstra, R. (author), Wevers, R.A. (author), Tack, C.J. (author), Gloerich, J. (author), van Gool, A.J. (author)
Background: Overweight and obesity can lead to adipose tissue inflammation, which causes insulin resistance and on the long-term type 2 diabetes mellitus (T2D). The inflammatory changes of obese-adipose tissue are characterized by macrophage infiltration and activation, but validated circulating biomarkers for adipose tissue inflammation for...
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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Court, A.J. (author), Bezy, J.L. (author), Levelt, P. (author), Siegl, M. (author), Leemhuis, A.P. (author), van de Valk, N.C.J. (author), Veefkind, P. (author)
The impact of NO2 and other atmospheric trace gases on health and the environment is now acknowledged by governments around the world. The sources, both natural and anthropogenic, have been shown to affect the quality of life due to low air quality in densely populated areas. Consequently, the need for accurate global NO2 measurements with high...
conference paper 2018
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Koivisto, A.J. (author), Kling, K.I. (author), Fonseca, A.S. (author), Brostrøm Bluhme, A. (author), Moreman, M. (author), Yu, M. (author), Costa, A.L. (author), Giovanni, B. (author), Ortelli, S. (author), Fransman, W. (author), Vogel, U. (author), Jensen, K.A. (author)
Nanoscale TiO2 (nTiO2) is manufactured in high volumes and is of potential concern in occupational health. Here, we measured workers exposure levels while ceramic honeycombs were dip coated with liquid photoactive nanoparticle suspension and dried with an air blade. The measured nTiO2 concentration levels were used to assess process specific...
article 2018
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Khenkin, M.V. (author), Anoop, K.M. (author), Visoly-Fisher, I. (author), Kolusheva, S. (author), Galagan, Y. (author), Di Giacomo, F. (author), Vukovic, O. (author), Patil, B.R. (author), Sherafatipour, G. (author), Turkovic, V. (author), Rubahn, H.G. (author), Madsen, M. (author), Mazanik, A.V. (author), Katz, E.A. (author)
The operational stability of perovskite solar cells (PSCs) remains a limiting factor in their commercial implementation. We studied the long-term outdoor stability of ITO/SnO2/Cs0.05((CH3NH3)0.15(CH-(NH2)2)0.85)0.95PbI2.55Br0.45/spiro-OMeTAD/Au cells, as well as the dynamics of their degradation, under simulated sunlight indoors and their...
article 2018
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Mameli, A. (author), Verheijen, M.A. (author), Mackus, A.J.M. (author), Kessels, W.M.M. (author), Roozeboom, F. (author)
public lecture 2018
Searched for: subject:"Chemistry"
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