Method of Making an Electrically Conductive Strain Gauge Material

An improved elastomeric electrically conductive strain gauge for use in virtual reality systems is disclosed which involves the flash heating of a doped ethylene vinyl acetate elastomer

Linking Past and Present: A preliminary paleoethnobotanical study of Maya nutritional and medicinal plant use and sustainable cultivation in the Southern Maya Mountains, Belize

researchPaleoethnobotanical analysis of anthropogenic soils sampled from archaeological features dating to the Classic Maya Period (A.D. 250-900) reveal diagnostic phytoliths that help the authors bring to light evidence of a novel sustainable agricultural strategy and a variety of nutritional and medicinal plants that were utilized by the Classic Maya of the Maya Mountains, Belize, Central America. Given the archaeological context of these phytoliths, the authors infer that the plants from which they were derived were exploited by the Classic Maya of the region. These discoveries have the potential for improving health and wellness regionally in the present since the agricultural strategy that is reconstructed demonstrates an intensive means of cultivation that has the potential of sustaining large, dense populations. The nutritional and medicinal plants alluded to, in turn, provide further evidence in support of the utilization of traditional knowledge in sustaining community health and wellness

Data from: Worldwide evidence of a unimodal relationship between productivity and plant species richness

The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and comprising a wide range of site productivities, we provide evidence in support of the HBM pattern at both global and regional extents. The relationships described here provide a foundation for further research into the local, landscape, and historical factors that maintain biodiversity

Worldwide evidence of a unimodal relationship between productivity and plant species richness

The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and comprising a wide range of site productivities, we provide evidence in support of the HBM pattern at both global and regional extents. The relationships described here provide a foundation for further research into the local, landscape, and historical factors that maintain biodiversity