ABSTRACT
In this paper, based on the Riccati transfer matrix method (RTMM), the Riccati fluid structure interaction transfer equations (FSIRTE) are established to improve the numerical stability of the classical fluid structure interaction transfer matrix method (FSITMM). Combined with numerical algorithms for eliminating the singularity points of the Riccati equations, the spare root problem in the calculation process is solved. This method can be used for the natural frequency calculation of liquid-filled piping systems. Compared with finite element method (FEM), it has the characteristics of high calculation efficiency; meanwhile, good numerical stability, compared with FSITMM; and accurate calculation results, compared with method of characteristics (MOC). Numerical simulation results of typical classical examples are given.
ABSTRACT
Objective To investigate the expression and clinical significance of apoptotic protease activating factor 1 (Apaf-1) and bax in prostate cancer (PCa) and benign prostatic hyperplasia (BPH). Methods Immunohistochemistry was used to detect the expression of Apaf-1 and bax in the tissues from 45 PCa patients and 60 BPH patients. Results The positive rates of Apaf-1 and bax in PCa tissues were 22.22%(10/45) and 20.00 % (9/45), respectively, while those in BPH tissues were 48.33 % (29/60) and 46.67 % (28/60). There was a statistically significant difference in the expressions of Apaf-1 and bax between two groups (P0.05), but they were correlated with the pathological grade and clinical stage of PCa (P< 0.05). The expressions of Apaf-1 and bax in PCa tissues were lower than those in BPH tissues. There was a positive correlation between the expression of Apaf-1 and bax (r=0.535, P<0.01). Conclusion Apaf-1 and bax might be correlated with the carcinogenesis and development of PCa.
ABSTRACT
Perioperative hyperglycemia become more common nowadays, it will bring adverse effect to the prognosis of patients if it was poorly controlled. Proper perioperative blood glucose monitoring is very important to hyperglycemic management. This article will be reviewed from the different types, harm and monitoring status of perioperative hyperglycemia.
