Junshi Xu
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View article: Within-city spatiotemporal variations in outdoor ultrafine particles and emergency room visits for cardiovascular outcomes
Within-city spatiotemporal variations in outdoor ultrafine particles and emergency room visits for cardiovascular outcomes Open
Background: Few epidemiological studies have examined the acute cardiovascular health impacts of within-city spatiotemporal variations in outdoor ultrafine particles (UFPs). Methods: We conducted a time-stratified case-crossover study of w…
View article: On the Potential of Waste Tire Pyrolysis in Carbon Mitigation: A Review
On the Potential of Waste Tire Pyrolysis in Carbon Mitigation: A Review Open
This review aims to evaluate the carbon mitigation potential of waste tire (WT) pyrolysis through a life cycle assessment (LCA) perspective, with a focus on clarifying methodological differences across studies. The scope of the review cove…
View article: On the Potential of Waste Tire Pyrolysis in Carbon Mitigation: A Review
On the Potential of Waste Tire Pyrolysis in Carbon Mitigation: A Review Open
The global accumulation of waste tires (WTs), exceeding 25 million tons annually, presents both environmental challenges and opportunities for sustainable resource recovery. Pyrolysis has emerged as a leading thermochemical technology for …
View article: Can Eco-Driving Evaluation Cross Cities? Data Localization and Behavioral Heterogeneity from Beijing to Toronto
Can Eco-Driving Evaluation Cross Cities? Data Localization and Behavioral Heterogeneity from Beijing to Toronto Open
The framework of eco-driving evaluation relying on vehicle trajectory data is to quantify the disparities of the fuel consumption for individual driving behavior and to develop a baseline under various traffic conditions. The baseline repr…
View article: Urban Air Pollution Data Collection, Mapping, and Prediction Using Mobile Sensors Installed on Courier Trucks
Urban Air Pollution Data Collection, Mapping, and Prediction Using Mobile Sensors Installed on Courier Trucks Open
Particulate matter with a diameter of 2.5 microns or less (PM 2.5 ) has significant impacts on human health, making it essential to understand its spatial and temporal variations. This study focuses on developing land use regression (LUR) …
View article: Behavioural nudging for greener travel: A discrete choice experiment in the Greater Toronto Area
Behavioural nudging for greener travel: A discrete choice experiment in the Greater Toronto Area Open
View article: Examining the social distributions in neighbourhood black carbon and ultrafine particles in Montreal and Toronto, Canada
Examining the social distributions in neighbourhood black carbon and ultrafine particles in Montreal and Toronto, Canada Open
Our findings highlight the importance of prioritizing exposure mitigation for populations residing near local sources and to understand contextual factors influencing inequities across cities and pollutants.
View article: Pathways to Carbon Neutrality: A Review of Life Cycle Assessment-Based Waste Tire Recycling Technologies and Future Trends
Pathways to Carbon Neutrality: A Review of Life Cycle Assessment-Based Waste Tire Recycling Technologies and Future Trends Open
Waste tires (WTs) pose significant environmental challenges due to their massive volume, with millions of tons generated globally each year. Improper disposal methods, such as illegal burning, further aggravate these issues by releasing su…
View article: Airborne ultrafine particle concentrations and brain cancer incidence in Canada’s two largest cities
Airborne ultrafine particle concentrations and brain cancer incidence in Canada’s two largest cities Open
Canadian Institutes of Health Research (CIHR) Foundation Grant and The United States Health Effects Institute (HEI).
View article: Airborne nanoparticle concentrations are associated with brain cancer incidence in Canada’s two largest cities
Airborne nanoparticle concentrations are associated with brain cancer incidence in Canada’s two largest cities Open
View article: Predicting within-city spatiotemporal variations in daily median outdoor ultrafine particle number concentrations and size in Montreal and Toronto, Canada
Predicting within-city spatiotemporal variations in daily median outdoor ultrafine particle number concentrations and size in Montreal and Toronto, Canada Open
Background: Epidemiological evidence suggests that long-term exposure to outdoor ultrafine particles (UFPs, <0.1 μm) may have important human health impacts. However, less is known about the acute health impacts of these pollutants as few …
View article: Challenges and opportunities of low-cost sensors in capturing the impacts of construction activities on neighborhood air quality
Challenges and opportunities of low-cost sensors in capturing the impacts of construction activities on neighborhood air quality Open
In large metropolitan areas such as Toronto, planners are increasingly relying on urban densification to accommodate population growth sustainably. While infill developments support the city's long-term climate goals, on-going construction…
View article: Exploring the triple burden of social disadvantage, mobility poverty, and exposure to traffic-related air pollution
Exploring the triple burden of social disadvantage, mobility poverty, and exposure to traffic-related air pollution Open
Understanding the relationships between ultrafine particle (UFP) exposure, socioeconomic status (SES), and sustainable transportation accessibility in Toronto, Canada is crucial for promoting public health, addressing environmental justice…
View article: Predicting spatial variations in annual average outdoor ultrafine particle concentrations in Montreal and Toronto, Canada: Integrating land use regression and deep learning models
Predicting spatial variations in annual average outdoor ultrafine particle concentrations in Montreal and Toronto, Canada: Integrating land use regression and deep learning models Open
Predictions from these models are available to support future epidemiological research examining long-term health impacts of outdoor UFPs and BC.
View article: Predicting Spatial Variations in Annual Average Outdoor Ultrafine Particle Concentrations in Montreal and Toronto, Canada: Integrating Land Use Regression and Deep Learning Models
Predicting Spatial Variations in Annual Average Outdoor Ultrafine Particle Concentrations in Montreal and Toronto, Canada: Integrating Land Use Regression and Deep Learning Models Open
View article: Prediction of Short-Term Ultrafine Particle Exposures using Street-Level Images and Air Quality Data Based on Mobile Monitoring
Prediction of Short-Term Ultrafine Particle Exposures using Street-Level Images and Air Quality Data Based on Mobile Monitoring Open
BACKGROUND: Within-city UFPs vary sharply since they are influenced by various factors, e.g., local sources, built environment, and meteorology. The long-term spatial distribution of UFPs has been investigated using mobile platforms. As co…
View article: The Design, Calibration, and Evaluation of a Mobile Sensor System for Air Pollution Measurement and Prediction in Urban Areas
The Design, Calibration, and Evaluation of a Mobile Sensor System for Air Pollution Measurement and Prediction in Urban Areas Open
BACKGROUND: The increasing ubiquity of low-cost air quality sensors has been recently met with a growing body of research on sensor calibration and validation. While most studies documenting low-cost sensor performance are limited to the a…
View article: Combined Deep Learning and Land Use Regression Models for Ultrafine Particles and Black Carbon in Montreal and Toronto, Canada
Combined Deep Learning and Land Use Regression Models for Ultrafine Particles and Black Carbon in Montreal and Toronto, Canada Open
BACKGROUND: Ambient ultrafine particles (UFP; <100nm) and black carbon (BC) have been associated with adverse health outcomes including cardiovascular disease and brain tumour incidence. Estimating population exposures for these pollutants…
View article: Effective and Acceptable Eco-Driving Guidance for Human-Driving Vehicles: A Review
Effective and Acceptable Eco-Driving Guidance for Human-Driving Vehicles: A Review Open
Eco-driving guidance refers to courses, warnings, or suggestions provided to human drivers to improve driving behaviour to enable less energy use and emissions. This paper reviews existing eco-driving guidance studies and identifies challe…
View article: Effective and Acceptable Eco-Driving Guidance for Human-Driving Vehicles: A Review
Effective and Acceptable Eco-Driving Guidance for Human-Driving Vehicles: A Review Open
Ecodriving guidance includes courses or suggestions for human drivers to improve driving behaviour, reducing energy use and emissions. This paper presents a systematic review of existing eco-driving guidance studies and identifies challeng…
View article: Capturing the Variability in Instantaneous Vehicle Emissions Based on Field Test Data
Capturing the Variability in Instantaneous Vehicle Emissions Based on Field Test Data Open
Emission models are important tools for traffic emission and air quality estimates. Existing instantaneous emission models employ the steady-state “engine emissions map” to estimate emissions for individual vehicles. However, vehicle emiss…
View article: Comparing emission rates derived from a model with those estimated using a plume-based approach and quantifying the contribution of vehicle classes to on-road emissions and air quality
Comparing emission rates derived from a model with those estimated using a plume-based approach and quantifying the contribution of vehicle classes to on-road emissions and air quality Open
This study presents a comparison of fleet average emission factor (s) derived from a traffic emission model with EFs estimated using plume-based measurements, including an investigation of the contribution of vehicle classes to carbon mono…
View article: Characterizing near-road air pollution using local-scale emission and dispersion models and validation against in-situ measurements
Characterizing near-road air pollution using local-scale emission and dispersion models and validation against in-situ measurements Open
View article: Investigating near-road particle number concentrations along a busy urban corridor with varying built environment characteristics
Investigating near-road particle number concentrations along a busy urban corridor with varying built environment characteristics Open