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Berghauser Pont, M.Y. (author), Haupt, Per (author)Spacematrix explores the potential of urban density as a tool for urban planning and design.<br/>This revised and extended edition of Meta Berghauser Pont and Per Haupt’s 2010 volume includes an extensive analysis of the relations between density, urban form and performance – a prerequisite for understanding and successfully predicting the...book 2023
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Llusar, Jordi (author), du Fossé, I. (author), Hens, Zeger (author), Houtepen, A.J. (author), Infante, Ivan (author)Although density functional theory (DFT) calculations have been crucial in our understanding of colloidal quantum dots (QDs), simulations are commonly carried out on QD models that are significantly smaller than those generally found experimentally. While smaller models allow for efficient study of local surface configurations, increasing the...journal article 2023
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Xu, Liangliang (author), Li, X. (author), Atif, Muhammad (author), Li, Yulong (author)Foamed concrete is an essential material in engineering that can be categorized into two types based on density distribution, namely uniform foamed concrete (UFC) and gradient foamed concrete (GFC). However, there exists a research gap concerning the mesoscopic deformation mechanism of UFC and GFC. The objective of this research is to bridge...journal article 2023
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Sarker, D. (author), Schinkel, C.V. (author), Portela, L. (author)This study reports the effect of N<sub>2</sub> and CO<sub>2</sub> bubbles on dilute to dense gas-liquid two-phase bubbly flow. A shadowgraph imaging technique captured bubble images at a high spatiotemporal resolution. The recordings of bubble images allow us to compute gas fraction distribution. It requires challenging segmentation and gas...journal article 2023
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Makaveev, M.K. (author), Snellen, M. (author), Smeur, E.J.J. (author)This paper puts forward a novel design for an airspeed instrument aimed at small fixed-wing tail-sitter unmanned aerial vehicles. The working principle is to relate the power spectra of the wall-pressure fluctuations beneath the turbulent boundary layer present over the vehicle’s body in flight to its airspeed. The instrument consists of two...journal article 2023
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Markovich, L. (author), Migliore, Agostino (author), Messina, Antonino (author)We introduce the concept of the almost-companion matrix (ACM) by relaxing the non-derogatory property of the standard companion matrix (CM). That is, we define an ACM as a matrix whose characteristic polynomial coincides with a given monic and generally complex polynomial. The greater flexibility inherent in the ACM concept, compared to CM,...journal article 2023
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van Beek, M.C. (author)Elektronica is een snel groeiende stroom van complex afval in Nederland. De huidige technieken zijn echter niet in staat om dit type afval, bekend als afgedankte elektrische en elektronische apparatuur (AEEA), te behandelen tot het niveau van ruwe materialen dat onze duurzaamheidsdoelen vereisen. Als stap op weg naar dit doel bespreken we hier...journal article 2023
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Shi, Can (author), Fan, Zheng (author), Connolly, David P. (author), Jing, Guoqing (author), Markine, V.L. (author), Guo, Y. (author)Railway ballast performance is dictated by a complex mix of mechanical properties. These effect its performance at the particle level for example in terms of particle degradation, but also at the track system level in terms of settlement and stability. Therefore this paper seeks to develop new understandings of ballast behaviour and identify...review 2023
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Cahalane, R.M.E. (author), Akyildiz, A.C. (author), Kavousi, Maryam (author), Vernooij, Meike W. (author), Ikram, M. Kamran (author), Gijsen, F.J.H. (author), Bos, Daniel (author)Background The purpose of this study was to validate a technique for measuring mean calcium density and to determine associations of cardiovascular risk factors with carotid calcium density. Methods and Results We performed a cross-sectional study in a random sample of 100 stroke-free participants from the population-based Rotterdam Study....journal article 2023
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Zhao, Yingliang (author), Sun, Yong (author), Guo, Z. (author), Sun, Xiaogang (author), Qiu, Jingping (author)The aim of this study was to improve the immobilization capacity of a binder prepared from As-containing biohydrometallurgy waste (BAW) on arsenic (As) by modifying it with ferric/ferrous salts. The study investigated the chemical fractions of As and its leaching characteristics. Results indicated that the addition of ferric/ferrous salts...journal article 2023
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Yang, Jinxin (author), Wu, Zhifeng (author), Menenti, M. (author), Wong, Man Sing (author), Xie, Yanhua (author), Zhu, Rui (author), Abbas, Sawaid (author), Xu, Yong (author)Urban morphology affects the sensible heat flux and net radiation exchange which can alter urban heat mitigation plans. This study first parameterized the geometric effects on the net radiation, and then calculated the net radiation and sensible heat flux in the urban landscape of Hong Kong. Considering that the sensible heat flux is the main...journal article 2023
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Zhao, Yingliang (author), Sun, Yong (author), Guo, Z. (author), Sun, Xiaogang (author), Qiu, Jingping (author)The aim of this study was to improve the immobilization capacity of a binder prepared from As-containing biohydrometallurgy waste (BAW) on arsenic (As) by modifying it with halloysite nanotubes (HNTs) and biochar (BC). The study investigated the influence of HNTs and BC on the chemical fractions and leaching characteristics of As, as well as...journal article 2023
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Zhang, F. (author), Yang, Y. (author), Hendriks, M.A.N. (author)Monitoring or identifying structural cracks is crucial for assessing the health of existing concrete structures. Key information about structural cracking encompasses the location of the crack and its kinematics, which include movements perpendicular and parallel to the crack face. Acoustic emission (AE) is a sensitive technique for detecting...journal article 2023
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Marino, Massimiliano (author), Stagnitti, Martina (author), Stancanelli, L.M. (author), Musumeci, Rosaria Ester (author), Foti, Enrico (author)The dynamics of gravity currents propagating beneath intermediate water waves is investigated in the present study. Laboratory experiments were carried out in a wave flume, in which saltwater was released into freshwater by means of a point-release setup in the presence of a fully developed wave field. Results revealed a series of interesting...journal article 2023
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Banis, Alexandros (author), Gomez, Andrea (author), Dutta, Aniruddha (author), Sabirov, Ilchat (author), Petrov, R.H. (author)The strengthening via precipitation of nano-sized κ-carbides leads to exceptional strength-ductility balance in low-density steels. During aging, such nanocarbides form through spinodal decomposition by fluctuations in the aluminum and carbon content in the austenite, followed by short-range ordering. At lower aging temperatures and short...journal article 2023
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Bravin, M. (author), Fanelli, Francesco (author)In this paper, we perform the fast rotation limit ε→ 0 <sup>+</sup> of the density-dependent incompressible Navier–Stokes–Coriolis system in a thin strip Ωε:=R2×]-ℓε,ℓε[ , where ε∈]0,1] is the size of the Rossby number and ℓ<sub>ε</sub>> 0 for any ε> 0 . By letting ℓ<sub>ε</sub>⟶ 0 <sup>+</sup> for ε→ 0 <sup>+</sup> and considering...journal article 2023
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Adlakha, D. (author), HIggs, Carl (author), Sallis, James F. (author)In the early stages of the COVID-19 pandemic, dubious assertions that population density increased spread of the virus led to premature and dangerous recommendations promoting suburban sprawl. In 2020, we published a commentary in Cities & Health to refute these recommendations. We hypothesized that features of activity-supportive...journal article 2023
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Yang, G. (author), Gram, Remon (author), Procel Moya, P.A. (author), Han, C. (author), Yao, Z. (author), Singh, M. (author), Zhao, Y. (author), Mazzarella, L. (author), Zeman, M. (author), Isabella, O. (author)Passivating contacts based on poly-Si have enabled record-high c-Si solar cell efficiencies due to their excellent surface passivation quality and carrier selectivity. The eventual existence of pinholes within the ultra-thin SiOx layer is one of the key factors for carrier collection, beside the tunneling mechanism. However, pinholes are usually...journal article 2023
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Pols, C.F.J. (author), Diepenbroek, Patrick (author)In practical work focussing on conceptual development, students spend valuable in-class time on collecting data rather than making sense out of it. This provides a barrier to learning about the targeted concept. To address this problem, we developed an approach that we coin collaborative data collection. Using a practical on the topic density...journal article 2023
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Schreiter, Lucas (author), Stolle, Claudia (author), Rauberg, Jan (author), Kervalishvili, Guram (author), van den IJssel, J.A.A. (author), Arnold, Daniel (author), Xiong, Chao (author), Callegare, Andyara (author)Satellites in Low Earth Orbit (LEO) are essential for sounding the topside ionosphere. In this work, we present and validate a data set of Total Electron Content (TEC) and in situ electron density observations from the Gravity Recovery And Climate Experiment (GRACE) and GRACE-Follow-On missions as well as a TEC data set from the CHAllenging...journal article 2023