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Identifying factors for the prediction of depression is a long‐standing research topic in psychiatry and psychology. Perceived stress, which reflects the tendency to appraise one's life situations as stressful and overwhelming, has emerged as a stable predictor for depressive symptoms. However, the neurobiological bases of perceived stress and how perceived stress influences depressive symptoms in...
Recently, the technology of steel bars and concrete plays an important role in the development of building construction, in this paper, calculation methods of cracking moment, ultimate moment, and stiffness of the beams strengthened by steel plate are offered according to the non-linear relationship between stress and strain of concrete, the theoretical and experimental results are compared and analyzed...
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