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The role of folic acid in the primary prevention of neural tube defects (NTDs) is well established. However, questions related to the protective mechanism remain unanswered. To help answer these… (More)
OBJECTIVES Although up to 2% of women undergo surgery during pregnancy, teratogenic effects of general anesthesia have not been adequately studied. Recently, an association between first-trimester… (More)
PROBLEM/CONDITION CDC monitors trends in the occurrence of congenital syphilis (CS) in the United States by using surveillance data sent from state and local health departments. Comparisons of data… (More)
Abstract The mineralogy and geochemistry of the massive pyrite-pyrrhotite mineralization, which contains minor magnetite, sphalerite and galena, the weathered profile and surface gossan at Mugga… (More)
The Davis pegmatite consists largely of albite with some nepheline and biotite, and minor amounts of microline and several other minerals. It is discordant to a series of gneissic… (More)
Abstract Archaean calc-alkaline volcanics occur in two distinct settings in the Pilbara Block. Within the ca. 3500 Ma old Warrawoona Group, sequences of intermediate to acid volcanics are… (More)