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The hot deformation behavior of nickel base superalloy 617B has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1120‐1210°C with strain rates of 0.1 to 20 s‐1 and total strain of above 0.85. True stress‐true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening...
To evaluate the application value of multislice computed tomographic perfusion imaging (MSCTPI) and multislice computed tomographic angiography (MSCTA) on traumatic cerebral infarction. MSCTA was performed on 10 patients who were initiailly diagnosed as traumatic cerebral infarction by normal conventional computed tomography (NCCT), among whom, 3 patients were examined by MSCTPI simultaneously...
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