A5079488733- Indoor Air Quality and Microbial Exposure
- Air Quality and Health Impacts
- Odor and Emission Control Technologies
- Infection Control and Ventilation
- Air Quality Monitoring and Forecasting
- Urban Stormwater Management Solutions
- Wind and Air Flow Studies
- Building Energy and Comfort Optimization
- Noise Effects and Management
- Vehicle emissions and performance
- Water Systems and Optimization
- Atmospheric chemistry and aerosols
- Smart Materials for Construction
- Toxic Organic Pollutants Impact
- Water Treatment and Disinfection
- Environmental Chemistry and Analysis
- Aerosol Filtration and Electrostatic Precipitation
- Water Quality Monitoring and Analysis
- Effects and risks of endocrine disrupting chemicals
- Fluid Dynamics and Mixing
- Groundwater flow and contamination studies
- Wastewater Treatment and Nitrogen Removal
- Sustainable Building Design and Assessment
- Conservation Techniques and Studies
- COVID-19 and healthcare impacts
The University of Texas at Austin
2013-2024
University of California, Davis
2021-2024
Dean College
2024
Portland State University
2019-2022
SHIELDS for Families
2022
Jen-Ai Hospital
2015-2020
Fribourg Development Agency
2020
Indoor Biotechnologies (United States)
2018-2020
Ferro (United States)
2019
In-Q-Tel
2015
The House Observations of Microbial and Environmental Chemistry (HOMEChem) study is a collaborative field investigation designed to probe how everyday activities influence the emissions, chemical transformations removal trace gases particles in indoor air. Sequential layered experiments research house included cooking, cleaning, variable occupancy, window-opening. This paper describes overall design HOMEChem presents preliminary case studies investigating concentrations reactive gases,...
Air filtration serves to reduce concentrations of particles in indoor environments. Most standalone, also referred as portable or in-room, air systems use HEPA filters, and cost generally scales with the clean delivery rate. A “do-it-yourself” lower-cost alternative, known Corsi-Rosenthal Box, that uses MERV-13 filters coupled a box fan has been recently proposed, but lacks systematic performance characterization. We have characterized five-panel cleaner using both research-grade...
Abstract Consumer products can emit significant quantities of terpenes, which react with ozone (O3). Resulting byproducts include compounds low vapor pressures that contribute to the growth secondary organic aerosols (SOAs). The focus this study was evaluate potential for SOA growth, in presence O3, following use a lime-scented liquid air freshener, pine-scented solid lemon-scented general-purpose cleaner, wood floor and perfume. Two chamber experiments were performed each these five...
Vacuuming is generally considered to be an important activity with respect the cleanliness of indoor environments but may lead short-term resuspension particulate matter and elevated particle mass in air. Because resuspended particles often contain toxicants, such as pesticides, or consist biological agents that can trigger allergic reactions, it understand role vacuuming on variations concentrations. The inhalation during events affect adversely those whose occupation requires them clean a...
Chronic human exposure to formaldehyde is significantly increased by indoor sources. However, information lacking on why these exposures appear persist in older homes with aging We use data from the Relationships of Indoor, Outdoor, and Personal Air study evaluate 179 residences, most which were than 5 years. assess dependence concentrations (C(in)) building type age, whole-house air exchange rate, temperature, seasonal changes. Indoor had mean median 17 ppb, primarily originated The factors...
Ventilation is of primary concern for maintaining healthy indoor air quality and reducing the spread airborne infectious disease, including COVID-19. In addition to building-level guidelines, increased attention being placed on room-level ventilation. However, many universities schools, ventilation data a room-by-room basis are not available classrooms other key spaces. We present an overview approaches measuring along with their advantages disadvantages. also from recent case studies...
A study was completed with various materials (carpet, gypsum board, upholstery, vinyl and wood flooring, acoustic tiles, fruit) that were exposed to eight gaseous VOCs (isopropanol, MTBE, cyclohexane, toluene, ethylbenzene, tetrachloroethene, 1,2-dichlorobenzene, 1,2,4trichlorobenzene) in electro-polished stainless-steel chambers.Dynamic responses VOC concentrations used determine linear adsorption desorption rate coefficients equilibrium partition coefficients.A adsorption/desorption model...
The use of indoor ozone generators as air purifiers has steadily increased over the past decade. Many are marketed to consumers for their ability eliminate odors and microbial agents improve health. In addition harmful effects ozone, recent studies have shown that heterogeneous homogeneous reactions between some unsaturated hydrocarbons can be an important source secondary pollutants, including free radicals, carbonyls, carboxylic acids, fine particles. Experiments were conducted in one...
The health effects associated with exposure to ozone range from respiratory irritation increased mortality. In this paper, we explore the use of three green building materials and an activated carbon (AC) mat that remove indoor air. We studied long-term these real environments on removal capability pre- post-ozonation emissions. A field study was completed over a 6-month period, laboratory testing intermittently conducted material samples retrieved field. results show sustained for all...
People spend approximately one-third of their lives sleeping, where they can be exposed to a myriad particle-bound biological agents and chemical pollutants that originate within mattresses bedding, including allergens, fungal spores, bacteria, particle-phase semi-volatile organic compounds. Full-scale particle resuspension experiments were conducted in an environmental chamber, volunteers performed prescribed movement routine on artificially seeded mattress. Human movements bed, such as...