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Data Assimilation as a Tool to Improve Chemical Transport Models Performance in Developing Countries

Lopez Restrepo, S. (author), Yarce Botero, A. (author), Quintero Montoya, O.L. (author), Pinel Pelaez, N. (author), Hinestroza Ramirez, J.E. (author), Nino-Ruiz, Elias David (author), Anderson Flórez, Jimmy (author), Rendón, Angela Maíra (author), Alvarez-Laínez, Monica Lucia (author), Heemink, A.W. (author)

Particulate matter (PM) is one of the most problematic pollutants in urban air. The effects of PM on human health, associated especially with PM of ≤2.5μm in diameter, include asthma, lung cancer and cardiovascular disease. Consequently, major urban centers commonly monitor PM2.5 as part of their air quality management strategies. The Chemical...

book chapter 2021

document

Estimation of blade loads for a variable pitch vertical axis wind turbine from particle image velocimetry

LeBlanc, B.P. (author), Ferreira, Carlos (author)

This paper presents the flow fields and aerodynamic loading of a two bladed H-type vertical axis wind turbine with active variable pitch for load and circulation control. Particle Image Velocimetry is used to capture flow fields at six azimuthal positions of the blades during operation, three upwind and three downwind. Flow phenomena such as...

journal article 2021

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Financial, institutional, environmental, technical, and social (FIETS) aspects of water, sanitation, and hygiene conditions in indigenous - rural Indonesia

Daniel, D. (author), Djohan, Dennis (author), Machairas, Ilias (author), Pande, S. (author), Arifin, Arifin (author), Djono, Trimo Pamudji Al (author), Rietveld, L.C. (author)

Background: There is increasing recognition of the complexity underlying WASH conditions in developing countries. This article explores the complexity by assessing the vulnerability of a specific area to poor WASH conditions using a qualitative approach. Methods: We present our findings for the district of East Sumba in Indonesia. This area...

journal article 2021

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Medellin Air Quality Initiative (MAUI)

Yarce Botero, A. (author), Quintero Montoya, O.L. (author), Lopez Restrepo, S. (author), Pinel Pelaez, N. (author), Hinestroza Ramirez, J.E. (author), Nino-Ruiz, Elias David (author), Anderson Flórez, Jimmy (author), Rendón, Angela María (author), Alvarez-Laínez, Monica Lucia (author), Heemink, A.W. (author)

This chapter book presents Medellín Air qUality Initiative or MAUI Project; it tells a brief story of this teamwork, their scientific and technological directions. The modeling work focuses on the ecosystems and human health impact due to the exposition of several pollutants transported from long-range places and deposited. For this objective,...

book chapter 2021

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Proton density fat fraction of the spinal column: an MRI cadaver study

Losch, M.S. (author), Swamy, A. (author), Elmi-Terander, Adrian (author), Edström, Erik (author), Hendriks, B.H.W. (author), Dankelman, J. (author)

Background: The increased popularity of minimally invasive spinal surgery calls for a revision of guidance techniques to prevent injuries of nearby neural and vascular structures. Lipid content has previously been proposed as a distinguishing criterion for different bone tissues to provide guidance along the interface of cancellous and...

journal article 2021

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Robust and efficient hydrogenation of carbonyl compounds catalysed by mixed donor Mn(I) pincer complexes

Yang, W. (author), Chernyshov, I. (author), van Schendel, R.K.A. (author), Weber, Manuela (author), Müller, Christian (author), Filonenko, G.A. (author), Pidko, E.A. (author)

Any catalyst should be efficient and stable to be implemented in practice. This requirement is particularly valid for manganese hydrogenation catalysts. While representing a more sustainable alternative to conventional noble metal-based systems, manganese hydrogenation catalysts are prone to degrade under catalytic conditions once operation...

journal article 2021

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Agent-Based Simulation of West Asian Urban Dynamics: Impact of Refugees

Termos, Ali (author), Picascia, Stefano (author), Yorke-Smith, N. (author)

Rapid international migration of significant populations generates profound implications for countries in West Asia, Europe, and other regions. The motivation of this work is to develop an agent-based model (ABM) to capture the existence of such migrant and refugee flows, and to explore the effects of these flows on urban dynamics. Advances in...

journal article 2021

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4.7 THz asymmetric beam multiplexer for GUSTO

Mirzaei, B. (author), Gan, Y. (author), Finkel, M. (author), Groppi, Christopher (author), Young, Abram (author), Walker, Christopher (author), Hu, Qing (author), Gao, J.R. (author)

A full demonstration of the Fourier phase grating used as 4.7 THz local oscillator (LO) multiplexer for Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory (GUSTO) is presented in this paper, including its design, modeling, tolerance analysis, and experimental characterizations of the angular and intensity distributions among 2 ×...

journal article 2021

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Sea level rise outpaced by vertical dune toe translation on prograding coasts

van IJzendoorn, C.O. (author), de Vries, S. (author), Hallin, E.C. (author), Hesp, Patrick A. (author)

Sea level is rising due to climate change and is expected to influence the development and dynamics of coastal dunes. However, the anticipated changes to coastal dunes have not yet been demonstrated using field data. Here, we provide evidence of dune translation that is characterized by a linear increase of the dune toe elevation on the order...

journal article 2021

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Compartmentalized cross-linked enzyme nano aggregates (c-CLEnAs) toward pharmaceutical transformations

de Martino, M. Teresa (author), Tonin, F. (author), Bloemendal, Victor R.L.J. (author), Hanefeld, U. (author), Rutjes, Floris P.J.T. (author), van Hest, Jan C.M. (author)

A new immobilization strategy using compartmentalized nanoreactors is herein reported for two biocatalytic processes: (1)N-acetylneuraminate lyase (NAL) is internalized in NAL-c-CLEnAs and used in a continuous flow aldol condensation ofN-acetyl-d-mannosamine with sodium pyruvate toN-acetylneuraminic acid; (2) two hydroxysteroid dehydrogenases...

journal article 2021

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A probabilistic long-term framework for site-specific erosion analysis of wind turbine blades: A case study of 31 Dutch sites

Verma, Amrit Shankar (author), Jiang, Zhiyu (author), Ren, Zhengru (author), Caboni, Marco (author), Verhoef, Hans (author), van der Mijle-Meijer, Harald (author), Castro, Saullo G.P. (author), Teuwen, Julie J.E. (author)

Rain-induced leading-edge erosion (LEE) of wind turbine blades (WTBs) is associated with high repair and maintenance costs. The effects of LEE can be triggered in less than 1 to 2 years for some wind turbine sites, whereas it may take several years for others. In addition, the growth of erosion may also differ for different blades and...

journal article 2021

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Effects of Information Architecture on the Effectiveness and User Experience of Web-Based Patient Education in Middle-Aged and Older Adults: Online Randomized Experiment

Dekkers, T. (author), Melles, M. (author), Vehmeijer, S.B.W. (author), de Ridder, H. (author)

Background: Web-based patient education is increasingly offered to improve patients’ ability to learn, remember, and apply health information. Efficient organization, display, and structural design, that is, information architecture (IA), can support patients’ ability to independently use web-based patient education. However, the role of IA in...

journal article 2021

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High-speed multicolor structured illumination microscopy using a hexagonal single mode fiber array

Hinsdale, T.A. (author), Stallinga, S. (author), Rieger, B. (author)

Structured illumination microscopy (SIM) is a widely used imaging technique that doubles the effective resolution of widefield microscopes. Most current implementations rely on diffractive elements, either gratings or programmable devices, to generate structured light patterns in the sample. These can be limited by spectral efficiency, speed, or...

journal article 2021

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Absolute distance measurement with a gain-switched dual optical frequency comb

Hei, K. (author), Anandarajah, Kaszubowska (author), Martin, Eamonn P. (author), Shi, Guang (author), Anandarajah, Prince M. (author), Bhattacharya, N. (author)

The measurement of distance plays an important role in many aspects of modern societies. In this paper, an absolute distance measurement method for arbitrary distance is proposed and demonstrated using mode-resolved spectral interferometry with a gain-switched dual comb. An accuracy of 12 µm, when compared to a He-Ne fringe counting laser...

journal article 2021

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The water use of heating pathways to 2050: analysis of national and urban energy scenarios

Kaandorp, C. (author), van de Giesen, N.C. (author), Abraham, E. (author)

Sustainable energy systems can only be achieved when reducing both carbon emissions and water use for energy generation. Although the water use for electricity generation has been well studied, integrated assessments of the water use by low-carbon heat systems are lacking. In this paper we present an analysis of the water use of scenarios for...

journal article 2021

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Hear-and-avoid for unmanned air vehicles using convolutional neural networks

Wijnker, D.C. (author), van Dijk, Tom (author), Snellen, M. (author), de Croon, G.C.H.E. (author), de Wagter, C. (author)

To investigate how an unmanned air vehicle can detect manned aircraft with a single microphone, an audio data set is created in which unmanned air vehicle ego-sound and recorded aircraft sound are mixed together. A convolutional neural network is used to perform air traffic detection. Due to restrictions on flying unmanned air vehicles close to...

journal article 2021

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Magnetic Nanoparticles to Unique DNA Tracers: Effect of Functionalization on Physico-chemical Properties

Sharma, Anuvansh (author), Foppen, Jan Willem (author), Banerjee, Abhishek (author), Sawssen, Slimani (author), Bachhar, Nirmalya (author), Peddis, Davide (author), Bandyopadhyay, S. (author)

Abstract: To monitor and manage hydrological systems such as brooks, streams, rivers, the use of tracers is a well-established process. Limited number of potential tracers such as salts, isotopes and dyes, make study of hydrological processes a challenge. Traditional tracers find limited use due to lack of multiplexed, multipoint tracing and...

journal article 2021

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Implications of future atmospheric composition in decision-making for sustainable aviation

Dedoussi, I.C. (author)

Aviation emissions lead to degraded air quality and adverse human health impacts, making air quality one of the leading environmental externalities associated with aviation. Aviation emissions have been growing steadily over the past decades, and, despite the current hindrance in air traffic due to the COVID- 19 pandemic, they are forecasted to...

review 2021

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Chemical enhanced oil recovery and the dilemma of more and cleaner energy

Farajzadeh, R. (author), Kahrobaei, Siavash (author), Eftekhari, Ali Akbari (author), Mjeni, Rifaat A. (author), Boersma, Diederik (author), Bruining, J. (author)

A method based on the concept of exergy-return on exergy-investment is developed to determine the energy efficiency and CO₂ intensity of polymer and surfactant enhanced oil recovery techniques. Exergy is the useful work obtained from a system at a given thermodynamics state. The main exergy investment in oil recovery by water...

journal article 2021

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Steerable needles for radio-frequency ablation in cirrhotic livers

van de Berg, N.J. (author), Meeuwsen, F.C. (author), Doukas, Michail (author), Kronreif, Gernot (author), Moelker, Adriaan (author), van den Dobbelsteen, J.J. (author)

Accurate needle placement in deep-seated liver tumours can be difficult. In this work, we disclose two new manually controlled steerable needles for 17G radio-frequency ablation probe placement. The needles contain stylets with embedded compliant joints for active tip articulations, and concentric tubes for (curved-path) guidance. Needle...

journal article 2021