Science Inventory

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Toxicity of two long-chain PFAS in larval mummichog (Fundulus heteroclitus) is affected by resource availability &nbsp; Ashley Champagne1, Tara Burke2, Yvonne Rericha3, Charles Heyder1, Lesley Mills2, Diane Nacci4, and Bryan Clark2 1 Oak Ridge Associated Universities Student Serv...

To introduce new approach methods for hazard and how to use publicly available information from the CompTox Chemicals Dashboard to understand chemical hazard.

Computational Systems Models for Neurovascular Development Thomas B. Knudsen, Research Triangle Park, NC &nbsp; Morphogenesis of the blood-brain barrier (BBB) is a complex process linked to neovascularization of the embryonic neural tube. This selective transport interface forms...

Impervious surface cover increases peak flows and degrades stream health, contributing to a variety of hydrologic, water quality, and ecological symptoms, collectively known as the urban stream syndrome. Strategies to combat the urban stream syndrome often employ engineering appr...

The U.S. EPA&rsquo;s Homeland Security Research Program (HSRP) is charged with protecting human health and the environment from accidental and intentional releases of toxic chemicals and other threat agents. Such chemical agents include Fourth Generation Agents (FGAs), which repr...

Per- and polyfluoroalkyl substances (PFAS) are widely used, long-lasting environmental contaminants linked to adverse effects in fish and other species. There are thousands of unique PFAS that are likely to impact organisms in different ways and through different mechanisms. The ...

The landscape of chemical risk assessment has been evolving with recent advancements in biomedical and computational sciences, as best represented respectively by biomarker discovery and physiologically-based pharmacokinetic/pharmacodynamic (PBPK/PD) modeling.  The integration of...

This class lecture gives two examples of how stable isotopes can be used to better understand nutrient dynamics in coastal marine systems. I give examples from my dissertation research on Egypt's Nile Delta and from our ongoing work in the San Juan Bay Ecosystem in Puerto Rico.

Fine particulate matter (PM2.5) resulting from wildland fire is a significant public health risk in the United States (U.S.). The existing stationary monitoring network and the tools used to alert the public of smoke conditions, such as the Air Quality Index or NowCast, are not o...

Presentation to 26th NIEHS Biomedical Career Symposium (April 2024) on how to create robust presentations

As production of plastic production and consumption continues to grow so too does environmental plastic pollution. Plastic pollution occurs in several sizes including macroplastics, nanoplastics, and microplastics. The detection and characterization of microplastics is essential ...

Plastic pollution is ubiquitous worldwide. Smaller pieces of plastic (<5 mm) denominated as microplastics (MPs) are of particular concern because they can be easily transported throughout the environment. As they travel, MPs can adsorb chemicals or nutrients, and develop a biofil...

The presentation provides the updated information on the progress of Fukushima environmental remediation from the 2011 nuclear power plant accident.

This presentation will be given at the 45th Conference for Stationary Source Sampling and Analysis for Air Pollutants. It will be included in the &quot;EPA Highlights&quot; session where EPA staff will provide a summary of the past year's key developments in air emissions measure...

This presentation will be given at a workshop on developing best practices for chemically characterizing vapor phase emissions from PFAS destruction technologies. The audience will include researchers from academia, goverment, and industry. All slides have been cleared previously...

The Flint Hills of eastern Kansas and northern Oklahoma is home to the largest remaining contiguous grassland prairie in the United States. Throughout the prairie, burning is a common practice used to preserve the prairie from encroachment of woody species such as eastern Red Ced...

Systems engineering can encapsulate many areas of design and production.&nbsp; A prudent course is to consider the environmental effects in design, construction, operation, product manufacturing and use, and end of life.&nbsp; To consider these effects requires information about ...

The analysis of contaminants of emerging concern (CECs) has been an ongoing priority due to their potential for adverse effects on environmental and human health. Wastewater is a source for many CECs, and surface waters that receive wastewater discharge often serve as source wate...

Anthropogenic nutrient loading has resulted in eutrophication and habitat degradation within estuaries. Study of eutrophication in estuaries has often focused on larger systems, while there has been increasing interest in understanding the governing processes in smaller systems. ...

The development of ecological benchmark values for major ions in fresh water is challenging and a site-specific method based on laboratory tests of synthetic ion mixtures has recently been published by Brent et al. (2022). &nbsp;Although the method has some appealing attributes, ...

The economic and methodological efficiencies of environmental DNA (eDNA) based survey approaches provide an unprecedented opportunity to assess and monitor aquatic environments. However, instances of inadequate communication from the scientific community about confidence levels, ...

The purpose of this letter is to correct previously reported blood serum concentrations for PFO5DoA in people in Wilmington, North Carolina (NC), in 2017-2018 [1]. Perfluoro-3,5,7,9,11-pentaoxadodecanoic acid (known as PFO5DoA; Chemical Abstracts Service Number [CASN] 39492-91-6,...

Dissolved reactive phosphorus (DRP) export from agricultural areas is a leading cause of nutrient pollution in freshwater systems (e.g., the North American Great Lakes). A potential solution to mitigate the excessive release of DRP is the use of nutrient management. To evaluate t...

Reduced tillage management conservation practices (No-till and Reduced-till) are widely adopted in agriculture; however, understanding their overall effectiveness for water quality protection is challenging. A meta-analysis was conducted to understand and quantify the effectivene...

There is strong scientific evidence for multiple pathways of human exposure to lead (Pb) in residential settings, particularly for young children; however, less is known about maternal exposure during pregnancy and children&rsquo;s exposure during early lifestages. A robust, mult...