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Objective To explore the diagnosis and TNM stage effect of serum CYFRA21-1,VEGF and PDGF in patients with non-small cell lung cancer.Methods The electrochemiluminescence immunoas- say was used to detect serum CYFRA21-1,and the sandwich enzyme-linked immunoabsorbentassay(ELISA) was used to detect serum VEGF and PDGF in patients with non-small cell lung cancer and 30 normal healthy controls.Results Compared with healthy control group,the level of serum CYFRA21-1,VEGF and PDGF in non-small cell lung cancer group were much higher(P0.05).The serum CYFRA21-1 level was positively correlated with VEGF and PDGF(P
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<p><b>OBJECTIVE</b>To evaluate the shape and structure of different separators affecting the mechanical behavior.</p><p><b>METHODS</b>The stress of different separators was analyzed by ANSYS software. Various separators were meshed into one-dimensional solid elements and the material character parameters were inputted. The loads were added gradually.</p><p><b>RESULTS</b>The stress was related to the arm of force and the point of force application.</p><p><b>CONCLUSIONS</b>The force applied can be controlled by selecting different separators.</p>