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There have been several documented outbreaks of COVID-19 associated with vocalization, either by speech or by singing, in indoor confined spaces. Here, we model the risk of in-room airborne disease transmission via expiratory particle…

Passive radiative cooling drawing the heat energy of objects to the cold outer space through the atmospheric transparent window (8 um - 13 um) is significant for reducing the energy consumption of buildings. Daytime and nighttime radiative…

应用物理 · 物理学 2023-11-01 Xiaojie Liu , Yanpei Tian , Fangqi Chen , Alok Ghanekar , Mauro Antezza , Yi Zheng

In recent years, the issue of radon emanation and diffusion has become a critical concern for rare decay experiments, such as JUNO and PandaX-4T. This paper introduces a detector design featuring a symmetric radon detector cavity for the…

A model of precursor manifestation mechanisms, stimulated by tectonic activity and some peculiarities of observer strategy, whose main task is the effective measurement of precursors in the spatial area of their occurrence on the Earth's…

Understanding effects of ionisation in the lower atmosphere is a new interdisciplinary area, crossing traditionally distinct scientific boundaries. Following the paper of Erlykin et al. (Astropart. Phys. 57--58 (2014) 26--29) we develop the…

大气与海洋物理 · 物理学 2015-06-24 Karen Aplin , Mike Lockwood

In this paper, the role of air humidity on the iron corrosion under irradiation is studied in the context of geological disposal of nuclear wastes. The irradiation experiments are performed at room temperature using a 3 MeV extracted proton…

化学物理 · 物理学 2016-08-16 S. Lapuerta , N. Moncoffre , N. Bérerd , H. Jaffrézic , N. Millard-Pinard , D. Crusset

We incorporate local ventilation effects into a spatially dependent generalisation of the Wells--Riley model for airborne disease transmission. Aerosol production and removal through ventilation, biological deactivation, and gravitational…

定量方法 · 定量生物学 2025-07-10 Alexander Pretty , Ian M. Griffiths , Zechariah Lau , Katerina Kaouri

According to the Lancet report on the global burden of disease published in October 2020, air pollution is among the five highest risk factors for global health, reducing life expectancy on average by 20 months. This paper describes a…

应用统计 · 统计学 2023-01-18 D K Arvind , S Maiya

High temperatures are associated with adverse respiratory health outcomes and increases in ambient air pollution. Limited research has quantified air pollution's mediating role in the relationship between temperature and respiratory…

应用统计 · 统计学 2026-02-20 Chen Li , Thomas W. Hsiao , Stefanie Ebelt , Rebecca H. Zhang , Howard H. Chang

An air cargo inspection system combining two nuclear reaction based techniques, namely Fast-Neutron Resonance Radiography and Dual-Discrete-Energy Gamma Radiography is currently being developed. This system is expected to allow detection of…

In temperate climates, infection rates of enveloped viruses peak during the winter. While these seasonal trends are established in influenza and human coronaviruses, the mechanisms driving the variation remain poorly understood and thus…

医学物理 · 物理学 2022-07-25 Alison Robey , Laura Fierce

Recent studies have shown associations between redlining policies (1935-1974) and present-day fine particulate matter (PM$_{2.5}$) and nitrogen dioxide (NO$_2$) air pollution concentrations. In this paper, we reevaluate these associations…

应用统计 · 统计学 2025-03-17 Xiaodan Zhou , Shu Yang , Brian J Reich

With the press of global climate change, extreme weather and sudden weather changes are becoming increasingly common. To maintain a comfortable indoor environment and minimize the contribution of the building to climate change as much as…

机器学习 · 计算机科学 2025-12-30 Liping Sun , Yucheng Guo , Siliang Lu , Zhenzhen Li

The first-year results from the Parker Solar Probe (PSP) reveal a gradual decrease of F-coronal dust from distances of $D=0.166-0.336$ AU (or the inner elongations of $\sim 9.22- 18.69~R_{\odot}$) to the Sun (Howard et al. 2019). Such a…

太阳与恒星天体物理 · 物理学 2021-10-04 Thiem Hoang , Alex Lazarian , Hyeseung Lee , Kyungsuk Cho , Pin-Gao Gu , Chi-Hang Ng

Radon is a significant background source in rare event detection experiments. Activated Carbon (AC) adsorption is widely used for effective radon removal. The selection of AC considers its adsorption capacity and radioactive background. In…

高能物理 - 实验 · 物理学 2023-10-24 Chi Li , Yongpeng Zhang , Lidan Lv , Jinchang Liu , Cong Guo , Changgen Yang , Tingyu Guan , Yu Liu , Yu Lei , Quan Tang

The aim of this study is to measure the radon mass exhalation rate from common granite building materials used in the East and Northeast part of Portugal. Twelve cubic shaped samples were measured. Nine of them without any coating and three…

医学物理 · 物理学 2020-08-25 Sandra Soares , Joaquim Kessongo , Yoenls Bahu , Luis Peralta

In recent work, Milian-Sanchez et al. observed fluctuations in radioactive decay rate measurement series, and after excluding environmental influences (measured indoors) as root causes, they looked for possible correlations with…

核实验 · 物理学 2021-08-03 Stefaan Pommé , Krzysztof Pelczar

The risks of disease transmission due to these droplets are significantly high in confined public spaces like elevators. A numerical analysis using OpenFOAM has been performed in this work to investigate the droplet dispersion routes in an…

流体动力学 · 物理学 2024-06-19 Anish Pal , Riddhideep Biswas , Sourav Sarkar , Achintya Mukhopadhyay

Radon and its progeny constitute a major source of background in rare-event physics experiments, such as those searching for dark matter, neutrinos, and neutrinoless double beta decay, due to their origin as unavoidable decay products of…

高能物理 - 实验 · 物理学 2026-02-19 P. Adhikari , M. G. Boulay , R. Crampton , M. Perry , D. Sinclair

Greening cities is a key solution to improve the urban microclimate and mitigate the impact of climate change. However, the effect of tree planting on pollutant dispersion in streets is still a debated topic. To shed light on this issue, we…