A5007944554- Air Quality and Health Impacts
- Infection Control and Ventilation
- Climate Change and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric chemistry and aerosols
- Inhalation and Respiratory Drug Delivery
- COVID-19 epidemiological studies
- Indoor Air Quality and Microbial Exposure
- Respiratory viral infections research
- COVID-19 impact on air quality
- Toxic Organic Pollutants Impact
- COVID-19 and healthcare impacts
- Energy and Environment Impacts
- Viral gastroenteritis research and epidemiology
- Parasitic Infections and Diagnostics
- Global Health Care Issues
- Vibrio bacteria research studies
- Particle Dynamics in Fluid Flows
- Data-Driven Disease Surveillance
- Atmospheric aerosols and clouds
- Smoking Behavior and Cessation
- activated carbon and charcoal
- Environmental Justice and Health Disparities
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Global Cancer Incidence and Screening
Queensland University of Technology
2018-2024
Western Sydney University
2024
Queens University
2021
Tehran University of Medical Sciences
2014-2018
Abstract We estimated mortality and economic loss attributable to PM 2·5 air pollution exposure in 429 counties of Iran 2018. Ambient 2.5 -related deaths were using the Global Exposure Mortality Model (GEMM). According ground-monitored satellite-based data, annual mean population-weighted concentrations for 30.1 38.6 μg m −3 , respectively. that long-term ambient contributed 49,303 (95% confidence interval (CI) 40,914–57,379) adults ≥ 25 yr. from all-natural causes based on ground monitored...
The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has indirectly produced both positive and negative effects on the environment, particularly in terms of air quality. Our study aimed to determine these city Tehran comparing ambient PM2.5 PM10 levels recorded at 22 quality monitoring stations during outbreak (20 February–2 April 2020) with those from corresponding period last year February–3 2019). Contrary expectation, average concentrations were markedly...
The viability of airborne respiratory viruses varies with ambient relative humidity (RH). Numerous contrasting reports spanning several have failed to identify the mechanism underlying this dependence. We hypothesized that an "efflorescence/deliquescence divergent infectivity" (EDDI) model accurately predicts RH-dependent survival human rhinovirus-16 (HRV-16). measured efflorescence and deliquescence RH (RHE RHD, respectively) aerosols nebulized from a protein-enriched saline carrier fluid...
Relative humidity (RH) can affect influenza A virus (IAV) survival. However, the mechanism driving this relationship is unknown. We hypothesized that RH-dependent survival of airborne IAV could be predicted by efflorescence/deliquescence divergent infectivity (EDDI) hypothesis. determined three distinct RH response zones based on hygroscopic growth factor carrier aerosols. These were classified as super-deliquescence zone (RH > 75%), hysteresis (43% < and sub-efflorescence 43%). added (H3N2)...
Abstract Despite increasingly growth in waterpipe smoking Tehran, so far no study has been conducted on the air quality of and cigarette cafés. Thirty-six cafés were selected concentration three pollutants including formaldehyde, carbon monoxide nicotine measured both indoor outdoor two times (week-day weekend’s session). Air sampling was performed for 180 min each pollutant. It observed that inside higher during weekend session (with a number “active heads”) compared with findings week-day...
Abstract. Physicochemical characterisation of airborne particles requires appropriate sampling and deposition methods. The TSI Nanometer Aerosol Sampler 3089 (TSI NAS) has predominantly been used as an electrostatic precipitator for depositing particles, enabling subsequent offline through techniques such electron microscopy. However, the optimal time NAS varying input concentrations not thoroughly investigated. This is extremely important in different environments differ significantly....
The airborne dynamics of respiratory droplets, and the transmission routes pathogens embedded within them, are governed primarily by diameter particles. These particles composed fluid which lines tract, is mucins salts, will interact with atmosphere evaporate to reach an equilibrium diameter. Measuring organic volume fraction (OVF) cough aerosol has proved challenging due large variability low material produced after coughing. Here, diametric hygroscopic growth factors (GF) healthy...
Understanding the mechanisms which inactivate airborne viruses is a current challenge. The composition of human respiratory aerosol poorly understood and needs to be adequately investigated for use in aerovirology studies. Here, physicochemical properties porcine fluid (PRF) from trachea lungs were both bulk solutions aerosols. mass ratio Na:K PRF compared with cell culture media (Dulbecco's Modified Eagle Medium, DMEM), frequently used studies, was significantly lower (∼2:1 vs ∼16:1)....
The impact of respiratory particle composition on the equilibrium morphology and phase is not well understood. Furthermore, effects these different phases morphologies viability viruses embedded within particles are equally unknown. Physiologically relevant fluid analogues were constructed, their hygroscopic behavior was measured using an ensemble technique. A relationship between hygroscopicity protein concentration determined, providing additional validation to high content aerosol in...
The factors governing the viability of airborne viruses embedded within respiratory particles are not well understood. This study aimed to investigate relative humidity (RH)-dependent syncytial virus (RSV) in simulated suspended various indoor air conditions. We tested RSV three static conditions, including sub-hysteresis (RH < 39%), hysteresis (39% RH 65%), and super-hysteresis > 65%) as dynamic transitions between conditions were → hysteresis, hysteresis. found that after 45 min particle...
Satisfying indoor air quality in public environments has become essential cities. In the present study, PM2.5, CO2, NO2, SO2, nicotine, and BTEX have been assessed 12 categories of places. The highest average concentrations SO2 were observed waterpipe cafés (233, 29.6, 5.1 µg/m3), whereas lowest found health clubs hospitals, respectively. Moreover, concentration varied from 69.5 µg/m3 (passenger terminals) to 1739.2 (elderly care centers). Given cafés, ranging approximately 11.0 50 µg/m3....