- A community-integrated geographic information system study of air pollution exposure impacts in Colfax, LA , LOCAL ENVIRONMENT (2022)
- A critical review of environmentally persistent free radical (EPFR) solvent extraction methodology and retrieval efficiency , CHEMOSPHERE (2021)
- Re. In Defense of the Weight-of-evidence Approach to Literature Review in the Integrated Science Assessment Response , EPIDEMIOLOGY (2021)
- Disparities in Distribution of Particulate Matter Emissions from US Coal-Fired Power Plants by Race and Poverty Status After Accounting for Reductions in Operations Between 2015 and 2017 , American Journal of Public Health (2020)
- In Defense of the Weight-of-Evidence Approach to Literature Review in the Integrated Science Assessment , EPIDEMIOLOGY (2020)
- Influence of exposure measurement errors on results from epidemiologic studies of different designs , Journal of Exposure Science & Environmental Epidemiology (2019)
- A cross-disciplinary evaluation of evidence for multipollutant effects on cardiovascular disease , Environmental Research (2018)
- Disparities in Distribution of Particulate Matter Emission Sources by Race and Poverty Status , American Journal of Public Health (2018)
- Factors associated with NO2 and NOX concentration gradients near a highway , Atmospheric Environment (2018)
- Estimation of on-road NO2 concentrations, NO2/NOX ratios, and related roadway gradients from near-road monitoring data , Air Quality, Atmosphere & Health (2017)
Environmental justice (EJ) is an academic and a policy framework intended to help count the full societal costs of decisions about environmental management, food production, and other activities, including many within the purview of the US Department of Agriculture. However, scientists and other professionals in agriculture and natural resources rarely encounter EJ in their academic training. Fewer still have research experiences or hands-on training that centers on EJ. This project will recruit and mentor doctoral students who will gain a strong working knowledge EJ policy and its intersections with other areas of expertise within Forestry and Environmental Resources. Students will acquire research skills and leadership experiences related to implementation of EJ policies and analytical frameworks within their knowledge domains. The project will recruit students from diverse backgrounds, and especially those with demonstrable commitments to marginalized communities on whom EJ policies often center. To accomplish this, the project will take advantage of North Carolina State UniversityÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s critical mass of EJ scholars and existing partnerships with Tribes and community-based groups. Careful recruiting and mentoring will ensure that students are successful. Deep integration of EJ and related topics into curricula will ensure that students have a firm grasp of EJ that complements other academic work. Internships and specialized training will help students be prepared for future leadership. Benchmarks will assess success of the project, including the extent to which it advances the USDA goal of ÃƒÂ¢Ã¢â€šÂ¬Ã…â€œincreas(ing) the number, quality and diversity of students in the food, agricultural and related sciences.ÃƒÂ¢Ã¢â€šÂ¬Ã‚Â
This program aims to attract, recruit, retain, and successfully graduate highly-skilled, career-ready candidates to fill USDA Forest Service critical job series within the Southern Research Station (SRS), the Forest Service nation-wide, and/or complementary supporting agencies and industries. Researchers and the SRS will help ensure the development of these skills and their utmost importance to the agency by serving on each of the studentÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s graduate research committees. This role is important as it helps to set research direction, provides mentorship and relationship-building with the students and faculty involved. Where possible, faculty from the studentsÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢ former HBCU/MSI institution will also be included as a part of the research guidance committee. Students will also meet with SRS leadership for further relationship development and exposure to the USDA Forest Service as an employer of choice.
In North Carolina, poultry is the top agricultural industry with an economic impact of more than $37 billion, employing over 146,000 people. Although, the main heating fuel for poultry houses is propane, recent pilot studies in the state have shown that wood pellets may be a cheaper heating fuel. Anecdotal evidence also suggests that wood pellet-heated poultry houses also produce better chicken survival, health, and growth. Our goal is to comprehensively assess the technical and economic feasibility of producing pellets specifically for the poultry industry in the Western NC, where a great proportion of broiler and ÃƒÂ¢Ã¢â€šÂ¬Ã‹Å“backyardÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢ poultry farms are located. As the economics of poultry farming is heavily dependent on mortality and overall growth/productivity of chicken, we will examine how wood pellet-based heating affects indoor air quality and health of the broiler chickens in the poultry houses. Our project results will demonstrate if this fuel is cost-effective and sustainable for poultry production to facilitate decision-making about poultry house fuel selection. Additionally, our project will generate information about potential income enhancements associated with pellet-based poultry heating.
Data indicate a disproportionate COVID-19 impact on Black residents of Louisiana. As of April 26, 2020, the United States (U.S.) has more confirmed coronavirus cases per capita than any other country, and Louisiana has the third highest rates of COVID-19 cases and the second highest deaths per capita in the country. Of 1,644 reported Louisiana deaths to date, 56% are of Black race. LouisianaÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s industrial corridor (IC), an area along the Mississippi River densely populated with petrochemical factories, is home to 44% of Black residents and 30% of residents living below the poverty line in the state. The IC is responsible for 64% of statewide TRI emissions for 2018. The IC includes the parishes of West and East Baton Rouge, Iberville, Ascension, St. James, St. John the Baptist, St. Charles, Jefferson, Orleans, and Plaquemines. Together, these parishes comprise 67% of LouisianaÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s COVID-19 cases and 68% of LouisianaÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢s COVID-19 deaths. Our hypothesis is that elevated COVID-19 death rates among Black IC residents is associated with long-term exposure to HAPs emissions and distrust in the information about the disease received from government and media sources. Our study of racial disparities in COVID-19 mortality risk will use a mixed methods approach integrating epidemiologic and ethnographic analysis to determine impacts of HAPs exposure on COVID-19 outcomes: 1) We will examine the associations between COVID-19 case and death rates with industrial emissions of HAPs by race and concentrated disadvantage; 2) We will explore the experiences of IC residents to understand how long-standing HAPs exposures and concentrated disadvantage may undermine public trust to influence COVID-19 outcomes. Insights from this study will be synthesized into policy recommendations designed to understand special health risks stemming from long-term HAPs exposure and promote trust in information distributed by credible sources among IC residents during subsequent waves of COVID-19. All findings will be communicated to the public, with special attention to residents of the IC, and we will share our protocols with state health and environmental officials to improve health assessments for IC residents.
This study addresses questions related to human exposure to environmentally persistent free radicals (EPFRs), a recently discovered class of pollutant species found at Superfund sites and formed during certain thermal treatment processes. It is unclear how long EPFRs persist when compared with other components of particulate matter (PM), and this research will provide information about the extent and duration of exposures nearby thermal treatment processes. This research will also provide information about exposure to EPFRs in homes and how concentrations of EPFRs correlate with noise and other co-stressors.
The poultry industry has an economic impact of over $37 billion for the state of North Carolina, creating 146,125 jobs in the state as of 2017. However, ammonia exposure from chicken waste creates a respiratory hazard to those poultry farm workers. Recent efforts by NC State Extension and farm operations partners for sustainable improvements to poultry production have involved adoption of wood pellets to fuel furnaces in hen houses. This dry heat has been shown to improve broiler chicken survival, growth, and quality. Contemporaneously, farm operators and workers have shared anecdotes of reduced odors in hen houses using dry wood pellet heat. We hypothesize that lower humidity in wood pellet-heated hen houses results in less production of ammonium aerosols and hence in lower exposures for poultry farm workers. Initial screening by Carolina Land & Lakes Resource Conservation and Development supports this hypothesis, but more work is needed to demonstrate that the dry heat produced by wood pellet combustion, compared with more humid air found during propane combustion, leads to lower ammonium exposures. We propose to compare ammonia concentrations in sets of hen houses from different poultry farms in Western North Carolina that use wood pellet or propane heat but are otherwise identical. A combination of continuous and integrated ammonia detectors will be used for this pilot study. Anticipated follow-up work includes sampling a greater suite of air pollutants, capturing greater spatial and temporal resolution within the hen houses, and including both personal and area samplers of particulate matter, ammonia, and carbon dioxide in the hen houses.