A5088527261- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Climate Change and Health Impacts
- Indoor Air Quality and Microbial Exposure
- Toxic Organic Pollutants Impact
- Atmospheric Ozone and Climate
- Energy and Environment Impacts
- Noise Effects and Management
- Infection Control and Ventilation
- Atmospheric aerosols and clouds
- Odor and Emission Control Technologies
- COVID-19 and Mental Health
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Atmospheric and Environmental Gas Dynamics
- Urban Transport and Accessibility
- COVID-19 and healthcare impacts
- Heavy metals in environment
- COVID-19 Pandemic Impacts
- COVID-19 epidemiological studies
- Sexual function and dysfunction studies
- Obstructive Sleep Apnea Research
- Advanced Chemical Sensor Technologies
- Heme Oxygenase-1 and Carbon Monoxide
Chinese University of Hong Kong
2016-2025
Institute of Earth Environment
2014-2025
Chinese Academy of Sciences
2014-2025
Hong Kong Jockey Club
2016-2025
Prince of Wales Hospital
2013-2024
Chinese University of Hong Kong, Shenzhen
2014-2023
University of Hong Kong
2003-2022
Taipei Medical University
2022
Primary Health Care
2020
Hong Kong Metropolitan University
2014
The ongoing outbreak of coronavirus disease 2019 (COVID-19) has spread rapidly on a global scale. Although it is clear that severe acute respiratory syndrome 2 (SARS-CoV-2) transmitted through human droplets and direct contact, the potential for aerosol transmission poorly understood1-3. Here we investigated aerodynamic nature SARS-CoV-2 by measuring viral RNA in aerosols different areas two Wuhan hospitals during COVID-19 February March 2020. concentration was detected isolation wards...
Simultaneous measurements of atmospheric organic and elemental carbon (OC EC) were taken during winter summer seasons at 2003 in 14 cities China. Daily PM 2.5 samples analyzed for OC EC by the Interagency Monitoring Protected Visual Environments (IMPROVE) thermal/optical reflectance protocol. Average concentrations 38.1 μ g m −3 13.8 periods, corresponding 9.9 3.6 , respectively. had minima maxima all cities. Carbonaceous matter (CM), sum (OM = 1.6 × OC) EC, contributed 44.2% to 38.8%...
PM2.5 in 14 of China's large cities achieves high concentrations both winter and summer with averages >100 μg m−3 being common occurrences. A grand average 115 was found for all cities, a minimum 27 measured at Qingdao during maximum 356 Xi'an winter. Both primary secondary are important contributors the summer. While ammonium sulfate is contributor seasons, nitrate contributions much larger Lead levels still several reaching an 1.68 Xi'an. High correlations lead arsenic indicate that it...
Abstract We examined the correlation between lung cancer incidence/mortality and country-specific socioeconomic development, evaluated its most recent global trends. retrieved age-standardized incidence rates from GLOBOCAN database, temporal patterns were assessed databases. employed simple linear regression analysis to evaluate their correlations with Human Development Index (HDI) Gross Domestic Product (GDP) per capita. The average annual percent changes (AAPC) of trends join-point...
Organic aerosols were studied at the molecular level in 14 coastal and inland mega-cities China during winter summer 2003. They are characterized by abundant presence of n-alkanes (annual average, 340 ng m-3), fatty acids (769 sugars (412 phthalates (387 m-3). In contrast, alcohols, polyols/polyacids, lignin resin products, sterols, polycyclic aromatic hydrocarbons (PAHs), hopanes detected as relatively minor components. n-Alkanes show a weak odd/even carbon predominance (CPI = 1.1) PAHs...
Vaccine hesitancy is among the major threats to effectiveness of vaccination programmes. This study aimed report trend in response willingness accept COVID-19 vaccine between two waves local epidemic and examine differences occupations. Two cross-sectional surveys were conducted online during first wave (February) third (August September) 2020. Acceptance was measured along with personal protection behaviours A total 2047 participants provided valid responses. The lower (34.8%) than (44.2%)....
Phthalates, widely used in flexible plastics and consumer products, have become ubiquitous contaminants worldwide. This study evaluated the acute toxicity estrogenic endocrine disrupting activity of butyl benzyl phthalate (BBP), di(n-butyl) (DBP), bis(2-ethylhexyl) (DEHP), diisodecyl (DIDP), diisononyl (DINP), di-n-octyl (DNOP) their mixtures. Using a 72 h zebrafish embryo test, LC50 values BBP, DBP mixture six phthalates were found to be 0.72, 0.63 0.50 ppm, respectively. The other four did...
Abstract Background The ongoing outbreak of COVID-19 has spread rapidly and sparked global concern. While the transmission SARS-CoV-2 through human respiratory droplets contact with infected persons is clear, aerosol been little studied. Methods Thirty-five samples three different types (total suspended particle, size segregated deposition aerosol) were collected in Patient Areas (PAA) Medical Staff (MSA) Renmin Hospital Wuhan University (Renmin) Wuchang Fangcang Field (Fangcang), Public...
There is limited information on the relationship between risk of cardiovascular disease and joint effects sleep quality duration, especially from large, prospective, cohort studies. This study to prospectively investigate duration development coronary heart disease.This examined 60,586 adults aged 40 years or older. A self-administered questionnaire was used collect as well a wide range potential confounders. Events were self-reported in subsequent medical examinations. Two types Sleep Score...
Abstract. During winter 2013, extremely high concentrations (i.e., 4–20 times higher than the World Health Organization guideline) of PM2.5 (particulate matter with an aerodynamic diameter < 2.5 μm) mass (24 h samples) were found in four major cities China including Xi'an, Beijing, Shanghai and Guangzhou. Statistical analysis a combined data set from elemental carbon (EC), organic (OC), 14C biomass-burning marker measurements using Latin hypercube sampling allowed quantitative source...
Abstract Maternal exposure to particulate air pollution increases the incidence and severity of asthma in offspring, yet mechanisms for this are unclear. Known susceptibility loci a minor component effect. We interrogate mouse allergic airway disease model assess epigenetic associations between maternal responses offspring. increased adult offspring associated with suppressed transcriptomic response. Control progeny showed differential expression 2842 genes across several important pathways,...
During spring 2002, three dust storm events were monitored by filter sampling in Xi'an near an Asian source region of northwest China. The carbonate (CO 3 2− ) fraction was determined sample acidification and thermal evolution. CO accounted for 8.0 ± 0.8% particles with aerodynamic diameter ≤2.5 μm (PM 2.5 during storms 4.7 3.0% PM between storms. ratios calcium to carbon consistent those calcite (CaCO ). δ 13 C 18 O abundances samples −2.7 0.7‰ −5.8 1.5‰, which differed from −8.3 1.9‰ −10.8...
Abstract. Numerous definitions and analytical techniques for elemental (or black) carbon (EC) have been published in the scientific literature, but still no generally accepted interdisciplinary definition exists. EC is not a single chemical compound, mainly composed of two parts contents: combustion residues from pyrolysis emissions formed via gas-to-particle conversion. Accordingly subdivided into classes: char soot. Char defined as carbonaceous materials obtained by heating organic...