1,238 research outputs found

    Examining Public Water Systems Servicing Schools and Childcare Facilities to Inform Policy: A Study of Lead Exposure in the Mississippi Delta

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    Abstract This study was initiated with the intent of identifying elementary schools and childcare facilities in the Mississippi Delta with children ages 6 and under that may have public water systems (PWSs) with lead exceedances of 5 ppb. We also aimed to identify the existence, and further the availability, of information regarding which public schools and childcare facilities were serviced by which public water systems. Based on the results of this study, considerations related to Mississippi’s ability to comply with the 2020 Revisions of the Lead and Copper Rule requiring testing in all public schools were determined. Seven principal counties were investigated for possible exceedances. The Mississippi Department of Health’s Drinking Water Watch (DWW) and Public Water System Material Inventory (PWSMI) databases were utilized to determine details regarding each PWS and the concentrations of lead detected over a six-year period from January 1st, 2014 to January 1st, 2020. Elementary schools and childcare facilities for the seven counties were then overlaid with their accompanying PWS. Of the 87 identified PWS, 18 reported lead water concentrations matching or exceeding 5.0 ppb. Thirteen of these PWSs likely serve children ages 6 and younger through elementary schools and child care facilities. This study showed that while information regarding the presence of lead within PWSs is accessible to the public, the capability to easily match schools with their water provider was more challenging because service areas are not easily accessible. This information will be vital in the state’s ability to prioritize and comply with lead in drinking water testing in childcare centers and public schools as required by the new Lead and Copper Rule Revisions

    The distribution of the eigenvalues of Hecke operators

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    For each prime pp, we determine the distribution of the pthp^{th} Fourier coefficients of the Hecke eigenforms of large weight for the full modular group. As pp\to\infty, this distribution tends to the Sato--Tate distribution

    Faster than Flintstone? – Could the Ant Hill Mob beat Fred for speed?

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    This paper calculates the maximum velocity of the Ant Hill Mob from Wacky Races when employing their ‘getaway’ technique of running while carrying the car. It was found that the Mob were slower than Fred Flintstone, another character famous for powering his car with his feet, by a ratio of over 34 times

    Does the Float Whale Pokémon really float? How can Wailord avoid floating off into space?

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    Wailord, the biggest Pokémon in the franchise, has a mass that implies it is less dense than both water and air. This paper calculates that if Wailord eats approximately 55.36 kg of food, its average density will be sufficient such that it will remain in the water. An unfeasible amount of food would be needed to reach the density of water, however