PubMed · 15609816
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
Michael G Maihofer. 2004. No quick fix.. https://pubmed.ncbi.nlm.nih.gov/15609816/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Explore the source record for details and available documents.
Identifying the sources and impacts of organic and inorganic contaminants at the watershed scale is a complex challenge because of the multitude of processes occurring in time and space. Investigation of geochemical transformations requires a systematic evaluation of hydrologic, landscape, and anthropogenic factors. The 1160 km2 Boulder Creek Watershed in the Colorado Front Range encompasses a gradient of geology, ecotypes, climate, and urbanization. Streamflow originates primarily as snowmelt and shows substantial annual variation. Water samples were collected along a 70-km transect during spring-runoff and base-flow conditions, and analyzed for major elements, trace elements, bulk organics, organic wastewater contaminants (OWCs), and pesticides. Major-element and trace-element concentrations were low in the headwaters, increased through the urban corridor, and had a step increase downstream from the first major wastewater treatment plant (WWTP). Boron, gadolinium, and lithium were useful inorganic tracers of anthropogenic inputs. Effluent from the WWTP accounted for as much as 75% of the flow in Boulder Creek and was the largest chemical input. Under both hydrological conditions, OWCs and pesticides were detected in Boulder Creek downstream from the WWTP outfall as well as in the headwater region, and loads of anthropogenic-derived contaminants increased as basin population density increased. This report documents a suite of potential endocrine-disrupting chemicals in a reach of stream with native fish populations showing indication of endocrine disruption.
OBJECTIVES: To describe the organizational features of an international child health elective (ICHE) and to document the diversity of diagnoses observed by residents. DESIGN: Faculty from the Department of Pediatrics, University of Colorado Health Sciences Center, Denver, created a steering committee in 1999 to develop and direct an ICHE, including selecting residents, selecting and organizing sites, and creating objectives and a year-long preparatory curriculum. The elective was piloted in 2000 and repeated in 2002 and 2004. SETTING AND PARTICIPANTS: Residents chose from 4 ICHE sites in Peru and Guatemala, where they observed clinical care in various clinical settings during a 4-week elective. MAIN OUTCOME MEASURES: The ICHE was evaluated via written evaluations by faculty and residents as well as written and oral reports by participating residents. RESULTS: During the 2000 and 2004 electives, residents recorded clinical cases in a data-entry log. Of the patients logged, 18% had illnesses never seen before by the residents and 5.6% had illnesses in advanced stages not previously seen by the residents. Strong reciprocal relationships were created between the department and participating international institutions. Residents reported uniformly that the elective was a valuable element of their training. CONCLUSIONS: Planning and faculty involvement in ICHEs helps to ensure achievement of elective objectives. Well-organized ICHEs have the potential to augment resident education. The experience at our institution demonstrates that ICHEs can provide experience with a variety of medical systems, exposure to diverse pathophysiologic conditions, and opportunities for collaboration with international colleagues.