Faculty & Labs
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- Graduate Programs
- Areas of Research
- Air Pollution and Health - Generation of reactive oxygen species by ambient and laboratory particles
- Urban and Regional Smog - : Organic and inorganic chemistry in aerosol particles and cloud/fog drops
- Global Climate Change - Polar snow chemistry and its impacts on ice core records; Effects of particle chemistry on particle properties and gas-phase composition
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Exposure science to link environmental concentrations with exposure and health through epidemiology
- Agricultural Emissions - Exposures to agricultural workers
- Indoor Air Quality - Penetration and deposition of particles, indoor sources of VOCs, methods for quantifying indoor concentrations for exposure, exposures in retail, office, and commercial environments
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Metabolic activation and subsequent interactions of reactive metabolites with cellular proteins leading to cytotoxicity
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Atmospheric aerosols, roadway impacts health; proposed and helped pass AB1870 (2006) adding an aerosol component to Smog Check II
- Transportation - Aerosol emissions, cars, trucks and trains
- Urban and Regional Smog - Lake Tahoe studies, aerosol impact on visibility and lake clarity, 1972 – present;
- Visibility Degradation - Aerosols and visibility, national parks and wilderness areas, IMPROVE PI, 1988-1997
- Indoor Air Quality - Indoor ultra fine aerosols at schools near roadways as volunteer with Breathe California of Sacramento-Emigrant Trails
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Particle sampling and characterization for in vitro and in vivo exposure studies.
- Transportation - Characterization of particles emitted from transportation sources including aircraft, automotive, and railway.
- Urban and Regional Smog - Sampling and analysis of ambient particulate in support of source apportionment studies and atmospheric pollution transport.
- Visibility Degradation - Ambient sampling and analysis of particles in Class 1 visual areas including National Parks and Monuments. Study of particle pollution source and concentration related to visibility reduction in US National Parks.
- Agricultural Emissions - Particle emission measurement from agricultural sources including dairies and other Confined Animal Facility Operations (CAFO) sites.
- Global Climate Change - Quantification of long-range particle transport and transformation. Ground-truth observations for climate model calibration related to long-range dust transport.
- Indoor Air Quality - Quality assurance of air sampling protocols, particle and gaseous sampling and analysis of indoor pollutants related to human health impacts.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Chemical characterization of potentially toxic or carcinogenic particulate matter, new technique development to characterize organic functional groups using FTIR and characterize elements using high-volume sampler and ICP-MS, radical generation due to par
- Urban and Regional Smog - Laboratory studies of the formation of secondary organic aerosols.
- Visibility Degradation - Work with the IMPROVE group at UCDavis which measures the concentration and composition of visibility reducing particles in all the National Parks in the U.S.
- Global Climate Change - Atmospheric transformation of organic particles and their impact on regional climate.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - How the composition of a particle affects the airway epithelium in children and adults.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Impact of environmental tobacco smoke on perinatal lung development
- Indoor Air Quality - Environmental tobacco smoke.
- Areas of Research
- Air Pollution and Health - Genome-wide responses to oxidants; modulation by dietary factors
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Children’s Environmental Health, exposure to heavy metals, especially Hg and Pb.
- Transportation - Elemental composition of fuels, lubricants and aerosols. Organic composition of compounds in exhaust
- Urban and Regional Smog - Sources of ozone pre-cursors and reactivity of emissions
- Agricultural Emissions - Sources of ozone pre-cursors and reactivity of emissions
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Effect of combustion-generated aerosols on inflammation.
- Transportation - Soot formation in engines.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Characterization and source apportionment of airborne particles in fine and ultrafine size fractions.
- Transportation - Measurement of particle size and composition in tailpipe emissions.
- Urban and Regional Smog - Source-oriented airshed modeling for California and the eastern U.S.
- Visibility Degradation - Source contributions to visibility reduction in California.
- Agricultural Emissions - Ozone formation potential of agricultural emissions sources including dairy cows.
- Global Climate Change - Impact of climate change on air pollution including feedbacks on local meteorology.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Effects of particles on mouse lungs, mouse models of asthma, mechanisms of particle toxicity.
- Urban and Regional Smog - PM, Ozone, other pollutants-health effects, lung toxicity.
- Agricultural Emissions - Role of endotoxin and other microbial products in PM toxicity.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Quantifying the effects of air quality on health.
- Transportation - Air pollution and climate change implications of transportation
- Urban and Regional Smog - Trends in ozone smog and effects of regulation and climate change on ozone smog.
- Agricultural Emissions - Effects of regulation on agricultural emissions.
- Global Climate Change - Economics of global climate change; effects of climate change on air quality.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - How nanoparticles impact the cells’ viability and mechanical property
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Impact of air pollutants on development of mucosal and systemic immunity in children.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Environmental physiology research, focusing on effects of air emissions on animal health and welfare.
- Agricultural Emissions - Air quality research related to livestock production.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Thermoregulation and thermal comfort of biota.
- Transportation - Turbulent transport of trace gases and particulates; modeling and measurements
- Urban and Regional Smog - Turbulent transport of trace gases and particulates; regional and smaller scale modeling and measurements.
- Agricultural Emissions - Aerosol physics; entrainment and deposition of aerosols.
- Global Climate Change - Turbulent transport of trace gases and particulates; carbon dioxide and other trace gas exchange from ecosystems; regional and smaller scale modeling and measurements.
- Indoor Air Quality - Fiber aerosol concentrations; bioaerosol concentrations (indoor).
- Graduate Programs
- Areas of Research
- Air Pollution and Health
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Inhalation deposition and biological effects of inhaled toxic or radioactive particles and gases, lung airway morphometry.
- Urban and Regional Smog - Biological response to inhaled airborne particles and gases, inhalation deposition of inhaled particles and gases; airborne particle characterization.
- Agricultural Emissions - Smoke from agricultural burning.
- Indoor Air Quality - Indoor radon & its decay products.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Perturbation of growth properties and differentiation of epidermal and related cells in culture by toxic agents.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Air pollutant exposures and lung disease, lung development and lung cell biology.
- Indoor Air Quality - Environmental Tobacco Smoke health effects, levels.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Particle deposition in airways, how this deposition affects airway development in children, and the particle toxicity.
- Transportation - Dynamics of particles emitted from vehicles and near roadways.
- Urban and Regional Smog - Mathematical modeling of particle dynamics in the urban and regional atmosphere and new instruments for measuring particle properties.
- Global Climate Change - New particle formation in the atmosphere, aerosol-cloud interactions and turbulent coagulation of cloud droplets and crystals.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Exposure assessment, and the effects of measurement error on epidemiological analysis.
- Transportation - Evaluation of potential chemical signatures for emissions.
- Urban and Regional Smog - Characterization of atmospheric transport and transformation; attribution of particulate matter to sources; characterization of measurement quality.
- Visibility Degradation - Theoretical analysis of radiative transfer and particle optics; analysis of haze composition data; assessment of monitoring and regulatory strategies.
- Global Climate Change - Radiative effects and remote sensing of particles.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Effects of inhaled particles on the Cardiovascular System.
- Urban and Regional Smog - Comparison between effects of Urban and Rural source particulate matter.
- Agricultural Emissions - Potential Health effects of Effect of Dairy source particulates.