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Tracer breakthrough curves provide valuable information about the traced media, especially in inherently heterogeneous karst aquifers. In order to study the effect of variations in hydraulic gradient and conduit systems on breakthrough curves, a bench scale karst model was constr...

There is growing interest in understanding how maternal diet might affect the sensitivity of offspring to environmental exposures. Previous studies demonstrated that adult rat offspring (approximately 6-months-old) from dams given a high-fat diet (HFD) prior to, during, and after...

This presentation provides an update to ongoing collaborations with Inter American University of Puerto Rico. The goal of these studies is to investigate public health benefits that result from implementation of low cost, sustainable filtration technologies in remote, rural commu...

Background/Objectives. In the past decade, passive sampling methods have undergone extensive development and the technique is now being applied at many Superfund sites to measure concentrations of freely dissolved chemical in the water column and sediment pore waters. If ecologic...

Flooding is among the most common and costly natural disasters in the United States and has been on the rise as flood mitigating habitats are lost, development places more people and infrastructure at risk, and changing climate increases flood frequency. Many communities are reco...

Most of this presentation lecture will focus on the qualitative aspects of biology and gas properties that determine uptake in the respiratory tract.

Non-targeted analysis (NTA) methods are increasingly used to discover chemicals of emerging concern (CECs). The extent to which these methods can support exposure and health studies must now be determined. EPA&rsquo;s Non-Targeted Analysis Collaborative Trial (ENTACT) was launche...

Background/Objectives. Flow across the sediment/water interface (SWI) has important implications for diverse hydrologic and engineering problems including remediation of groundwater (GW) and sediments in streams, lakes and estuaries; management of aquatic habitats; and water-reso...

Chronic exposure to inorganic arsenic (iAs), a contaminant of water and food supplies, is associated with many adverse health effects. A notable feature of iAs metabolism is sequential methylation reactions which produce mono- and di-methylated arsenicals that can contain arsenic...

Current pesticide risk assessment practices use the honey bee, Apis mellifera L., as a surrogate to characterize the likelihood of chemical exposure of a candidate pesticide for all bee species. Bees make up a diverse insect group that provides critical pollination services to bo...

Spanning the border of U.S. and Canada, the Nooksack-Fraser transboundary area (2639 km2) is home to the communities of Lynden, Washington, and Abbotsford, British Columbia, with a strong base in farming, fisheries and outdoor recreation. Balancing these uses is a key issue in t...

Spanning the border of U.S. and Canada, the Nooksack-Fraser transboundary area (2639 km2) is home to the communities of Lynden, Washington, and Abbotsford, British Columbia, with a strong base in farming, fisheries and outdoor recreation. Balancing these uses is a key issue in t...

Adverse Outcome Pathways (AOPs) organize toxicological knowledge from the molecular level up to the population level, providing evidence-based causal linkages at each step. The AOPWiki serves as a repository of AOPs. With the international adoption of the AOP framework, the AOPw...

We followed soil C fluxes in a subalpine grassland system exposed to experimentally increased atmospheric N deposition for 7 years. Earlier we found that, different from the plant productivity response, the bulk soil C stock increase was highest at the medium, not the high N inpu...

International concern about contaminated sediments is increasing as sustainable practices are needed to maintain water resources and waterways as important economic, commercial, recreational, and community resources. Sediments often serve as long-term sinks for legacy pollutants,...

This report includes proceedings from the 2013 NIEHS/EPA Children's Centers Annual Meeting, held in Washington D.C. in October, 2013. Summaries of presentations, speaker biosketches, poster abstracts, and a meeting participant list are all included.

The report includes proceedings from the 2015 NIEHS/EPA Children's Centers Annual Meeting. The proceedings include presentation summaries, speaker biosketches, poster abstracts, and a list of meeting participants.

The Narragansett Bay Estuary Program (NBEP) developed 24 environmental indicators for its 2017 State of Narragansett Bay and Its Watershed report with the collaboration of over 50 bi-state (MA and RI) and regional partners. The report presents and tracks the 24 indicators in ord...

The University of Rhode Island&rsquo;s Watershed Watch Volunteer Monitoring Program has been collecting water quality data on dozens of Rhode Island lakes and ponds for over 25 years, allowing exploration of long-term trends in common water quality parameters. Not all lakes and p...

Aromatase is a member of the cytochrome P450 superfamily responsible for a key step in the biosynthesis of estrogens. As estrogens are involved in the control of important reproduction-related processes, including sexual differentiation and maturation, aromatase is a potential ta...

Cells in developing tissues must integrate and respond to highly dynamic information in the form of metabolic intermediates, genetic signals, and molecular gradients. Understanding the cellular decision-making process, and how these decisions may be perturbed by genetic errors or...

Graphene family nanomaterials (GFNs) are widely used in the field of electronics and biomedicine. Gaps in our knowledge about fate and toxicity of GFNs, such as graphene oxide (GO), raise concerns regarding their environmental impacts. Filter feeding bivalves, such as Crassostrea...

Changing precursor emission patterns in conjunction with stringent health protective air quality standards, necessitate accurate quantification of non-local contributions to ozone pollution at a location due to atmospheric transport, that by nature predominantly occurs aloft noct...

Cumulative risk assessment (CRA) methods promote the use of a conceptual site model (CSM) to apportion exposures and integrate risk from multiple stressors. While CSMs may encompass multiple species, evaluating end points across taxa can be challenging due to data availability an...

Wildfire smoke contains hazardous levels of fine particulate matter (PM2.5), a pollutant shown to adversely effect respiratory and cardiovascular health. Estimating PM2.5 concentrations attributable to wildfires is key to understanding the extent to which wildfires contribute to ...