Publications by authors named "J N Fitzsimmons"
Observations of dissolved cadmium (dCd) and phosphate (PO) suggest an unexplained loss of dCd to the particulate phase in tropical oxyclines. Here, we compile existing observations of particulate Cd and phosphorus (P), and present new data from the US GEOTRACES GP15 Pacific Meridional Transect to examine this phenomenon from a particulate Cd perspective. We use a simple algorithm to reproduce station depth profiles of particulate Cd and P via regeneration and possible subsurface accumulation.
View Article and Find Full Text PDFBackground: The purpose of this study is to describe anterolateral rotatory instability (ALRI) as a possible etiology of primary osteoarthritis (OA) of the elbow.
Methods: We examined 76 fresh frozen cadaveric elbows (male:female, 56:20; mean age, 81 years) for patterns of cartilage erosion that could be due to ALRI. These included erosions on the lateral trochlear ridge (LTR) lesion, crescent rim of the radial head (RC) lesion or the ventral capitellum (VC) lesion.
Article Synopsis
- * Results indicate that the automated method was more accurate in identifying anatomical landmarks (0.6 mm discrepancy vs 1 mm for manual), and it demonstrated better reproducibility and efficiency in the process.
- * The findings suggest that this method can improve preoperative and postoperative procedures for RHA, although further research is needed to explore its full potential in surgical planning.
Article Synopsis
- Primary production in the sunlit ocean relies on nutrients like nitrate, phosphate, and iron, which are essential for phytoplankton to convert CO2 into biomass.
- Microbial metabolism in the upper mesopelagic 'twilight zone' (200-500 m) is believed to be constrained by the availability of organic carbon.
- The study reveals high concentrations of siderophores, indicating iron deficiency in both the surface and twilight zone of the eastern Pacific Ocean, suggesting that low iron availability may limit microbial metabolism across larger areas of the ocean, impacting carbon storage.
The Preventive Controls for Human Food Rule regulation under the Food Safety Modernization Act sets new food safety standards. Both food safety educators and small and medium sized food processing businesses that manufacture certain value-added or processed foods lack knowledge regarding costs to prepare, implement, and manage ongoing food safety practices under the new standards. Current food safety training materials do not acknowledge costs or provide content addressing potential costs, and food safety educators do not have information needed to guide development of relevant materials that address costs.
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