A5051677610- Air Quality and Health Impacts
- Infection Control and Ventilation
- COVID-19 and healthcare impacts
- Thermal Regulation in Medicine
- Environmental Impact and Sustainability
- Impact of Light on Environment and Health
- Integrated Energy Systems Optimization
- Noise Effects and Management
- Aerosol Filtration and Electrostatic Precipitation
- Smart Grid Energy Management
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Energy, Environment, and Transportation Policies
- Energy Load and Power Forecasting
- Climate Change and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- COVID-19 epidemiological studies
University of California, Los Angeles
2020-2025
Exposure to respiratory droplets contributes greatly the spread of SARS-CoV-2 virus during COVID-19 pandemic. This study investigates effectiveness various face coverings reduce cough-generated airborne particle concentrations at 0.3, 0.9, and 1.8 m away from source in an indoor environment. We measured number concentration (PNC) size distribution under seven different conditions: (1) no covering; (2) shield only; (3) cloth mask; (4) + (5) surgical (6) (7) N95 respirator or equivalent (i.e.,...
With widespread adult-use cannabis legalization in the United States, consumption lounges have rapidly emerged. However, studies of indoor exposure are still lacking, particularly public spaces. We measured fine particle (PM2.5) mass concentrations and number at a lounge Los Angeles, California. compared street front, backyard, two smoking cabins identified three busyness levels to investigate concentration differences cabin. The results showed that PM2.5 cabin exceeded 1600 μg/m3. During...
The January 2025 Los Angeles urban wildfires caused extensive destruction and exposed millions to wildfire smoke containing hazardous volatile organic compounds (VOCs). To evaluate exposure risks, we conducted indoor outdoor VOC sampling at 24 locations during three phases: active burning, smoldering, off-gassing. Outdoor benzene concentrations peaked burning but remained below OEHHA health thresholds. In contrast, BTEX increased smoldering elevated the off-gassing phase, particularly in...