Empowering Communities: Tailored Pandemic Data Visualization for Varied Tasks and Users

IEEE Computer Graphics and Applications, Journal Year: 2025, Volume and Issue: 45(1), P. 130 - 138

Published: Jan. 1, 2025

Data visualization methodologies were intensively leveraged during the COVID-19 pandemic. We review our design experience working on a set of interdisciplinary pandemic projects. describe challenges we met in these projects, characterize respective user communities, goals and tasks supported, data types visual media worked with. Furthermore, instantiate characterizations series case studies. Finally, analysis lessons learned, considering future pandemics.

Language: Английский

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Characterization of respiratory particles released during continuous speech and its relation to mask performance

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 16, 2025

Abstract Revealing the physicochemical characteristics of exhaled particles is essential for understanding and efficiently mitigating airborne spread contagious human illnesses. Among most pivotal factors, number size distribution emitted plays a crucial role when considering atmospheric dispersion. This study focuses on submicron during speaking, with particular attention changes over time. Moreover, real-world (source control) efficiency three types commonly used facemasks (FFP2, surgical 2-layer cotton mask) under in vivo conditions was studied. A specially designed cabin ensured controlled environment, where set experiments conducted 28 participants. Our findings revealed no substantial variability among different individuals pitches. However, quantity varied significantly individuals, differences reaching nearly two orders magnitude. Additionally, strongly depended speaking volume, decreasing as speech volume reduced. Submicron originating from lungs upper airways exhibited consistent bimodal pattern, peaks around 300 nm below 100 nm. FFP2 surgery masks worn by subjects demonstrated robust performance characterized 80% source control even smallest particle ranges tested. At same time, textile yielded less favourable results 50–60% efficiency.

Language: Английский

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Joint size and velocity statistics of droplets exhaled while speaking, coughing, and breathing

Physical Review Fluids, Journal Year: 2025, Volume and Issue: 10(4)

Published: April 17, 2025

Language: Английский

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Scalable Laser Manufacturing of High‐Aspect‐Ratio Superhydrophobic and Ferromagnetic Microcilia Arrays for Aqueous Droplet Transportation

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract Biological cilia exhibit metachronal movements that enable the expulsion of substances such as mucus and bacterial cells. Inspired by biological cilia, significant progress has been made in recent years development artificial cilia. In particular, magnetic actuation emerged a prominent strategy for real‐time, remote‐controlled manipulation, offering noninvasive reversible operation without inducing irreversible damage. However, fabrication microcilia is currently constrained limitations achieving high aspect ratios, cost‐effectiveness, scalable production. this study, advanced laser manufacturing used to drill porous silicon (Si) templates, successfully demolding with ratio (exceeding 9). By integrating dioxide (SiO 2 ) nanoparticles, superhydrophobic surface achieved hierarchical micro‐nano structure. The experiments demonstrated these structured not only remarkable durability but also maintain long‐term superhydrophobicity. Furthermore, blending iron (II, III) oxide (Fe 3 O 4 arrays (SMMA) are developed, enabling droplet transportation on their controlled an external field. These have potential applications biomedical devices, self‐cleaning anti‐fouling surfaces, human sensing technologies.

Language: Английский

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Influence of kindergarten dormitory bed layout on the proximity propagation characteristics of exhaled pollutants

Journal of Occupational and Environmental Hygiene, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: April 30, 2025

Kindergarten dormitories are indoor napping areas where preschool children spend extended periods nearby, making them high-risk environments for the transmission of respiratory diseases. To understand characteristics pollutants, particularly CO2 and simulated cough aerosols between adjacent beds, two common bed layouts in kindergartens were investigated: three beds staggered height (TBSH) uniform (TBUH). The experiments measured PM2.5 concentrations (using liquid generated by an ultrasonic nebulizer as surrogates particles) breathing zone mannequins under different ventilation modes (on off) sleeping postures (lying face up on right side). results showed that when was off, concentration near head each reached nearly 1,000 ppm within 60 min. When on, diluted to ambient levels 3.3 However, exhibited propagation compared CO2. While rapidly diluted, accumulated downstream formed high-concentration zones at beds. These findings visualize potential aerosol pathways kindergarten highlight limitations using tracer. study found increasing heights along airflow direction effectively reduced compensated insufficient horizontal distance dormitories. design standards should consider local dilution efficiency zone, be integrated with system ensure air velocities exceed 0.01 m/s head, thereby reducing residence time pollutants zone.

Language: Английский

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