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Livestock management systems are complex refl ections of economic practices. During the mid-fourth millennium BC in southeastern Poland distinct economic activities were revealed using portable x-ray fl uorescence (herein pXRF). Portable X-ray fl uorescence was used to measure elemental levels of strontium in the teeth of cattle, sheep and pig. Strontium is fi xed in dental enamel after a tooth has...
Introduction: Though the trace element strontium’s (Sr) exact role in health remains unknown, at certain levels, it is toxic and, given the body’s low threshold for Sr, has been cited to cause nervous disorders. At different stages of the life cycle, organisms vary in their ability to discriminate Sr and calcium, which can cause age-related differences in gastrointestinal absorption. Though data regarding...
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