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Fluoride occurrence in United States groundwater
Science of The Total Environment, 2020Data from 38,105 wells were used to characterize fluoride (F) occurrence in untreated United States (U.S.) groundwater. For domestic wells (n = 11,032), water from which is generally not purposely fluoridated or monitored for quality, 10.9% of the samples have F concentrations >0.7 mg/L (U.S. Public Health Service recommended optimal F concentration in
Peter B. McMahon +4 more
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Occurrence of depression in the postpartum state
Journal of Affective Disorders, 1983Using multiple variables of illness, comparisons were made between 17 postpartum depressives with recurrent affective disorder and 37 women with children and recurrent affective disorder but no postpartum depressions. An earlier age of onset in patients with postpartum depression was the only variable that was significantly different between groups ...
M J, Garvey +3 more
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On the Occurrence of Transition States in Celestial Mechanics
Annals of the New York Academy of Sciences, 2004Abstract: The transition state is a central concept in the study of chemical reactions. The basic idea is that state space (phase space) can be partitioned into two volumes; the first corresponding to reactants and the second to products. Chemists call the boundary between these two regions the transition state. The rate of a chemical reaction is then
Charles, Jaffé, T, Uzer
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Increased variability of tornado occurrence in the United States
Science, 2014Whether or not climate change has had an impact on the occurrence of tornadoes in the United States has become a question of high public and scientific interest, but changes in how tornadoes are reported have made it difficult to answer it convincingly.
Harold E, Brooks +2 more
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Obligations of The State: State Behavior and The Occurrence of State Success
2017The start of the twenty-first century has coincided with the emergence of the concept of state failure as a major humanitarian and security concern. While the occurrence of state failure has received much attention, there has been little agreement on the actual definition and conceptualization of state failure.
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Functionalism and the Problem of Occurrent States
The Philosophical Quarterly, 2017In 1956 U. T. Place proposed that consciousness is a brain process. More attention should be paid to his word ‘process’. There is near-universal agreement that experiences are processive—as witnessed in the platitude that experiences are occurrent states. The abandonment of talk of brain processes has benefited functionalism, because a functional
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