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Different defect widths and their axial locations had different reduction effects on burst pressure, and the predicted results from numerical model showed good consistency with experimental results. Ultimately, the influence of defect width and location on the burst pressure of GFTRP pipe was discussed in detail.We use U.S. county-level location data derived from smartphones to examine travel behavior and its relationship with COVID-19 cases in the early stages of the outbreak. People traveled less overall and notably avoided areas with relatively larger ou
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