Isopaxametric quadrilateral elements are widely used in the finite element method. However, they have a disadvantage of accuracy loss when elements are distorted. Spline functions have properties of simpleness and con...Isopaxametric quadrilateral elements are widely used in the finite element method. However, they have a disadvantage of accuracy loss when elements are distorted. Spline functions have properties of simpleness and conformality. A 17onode quadrilateral element has been developed using the bivaxiate quaxtic spline interpolation basis and the triangular area coordinates, which can exactly model the quartic displacement fields. Some appropriate examples are employed to illustrate that the element possesses high precision and is insensitive to mesh distortions.展开更多
目的:探讨去整合素-金属蛋白酶17(A disintegrin and metalloproteinase 17,ADAM17)蛋白在食管鳞癌中的表达及其与淋巴结转移的相关性。方法:采用免疫组化SP法检测80例食管鳞癌及对应的正常食管黏膜中ADAM17蛋白的表达水平。采用χ2检验...目的:探讨去整合素-金属蛋白酶17(A disintegrin and metalloproteinase 17,ADAM17)蛋白在食管鳞癌中的表达及其与淋巴结转移的相关性。方法:采用免疫组化SP法检测80例食管鳞癌及对应的正常食管黏膜中ADAM17蛋白的表达水平。采用χ2检验、Pearson相关分析进行统计学处理。结果:食管鳞癌及其切缘的正常食管粘膜中ADAM17蛋白表达阳性率分别为66.25%和6.25%,差异有统计学意义(P<0.05)。食管鳞癌中ADAM17蛋白表达阳性率与淋巴结转移呈正相关(P<0.05)。结论:ADAM17蛋白在食管鳞癌中高表达,在食管鳞癌的发生、侵袭转移中起重要作用。展开更多
基金supported by the Natural Science Foundation of China China (Nos. 60533060, 10672032, and 10726067)the Science Foundation of Dalian University of Technology (No. SFDUT07001)
文摘Isopaxametric quadrilateral elements are widely used in the finite element method. However, they have a disadvantage of accuracy loss when elements are distorted. Spline functions have properties of simpleness and conformality. A 17onode quadrilateral element has been developed using the bivaxiate quaxtic spline interpolation basis and the triangular area coordinates, which can exactly model the quartic displacement fields. Some appropriate examples are employed to illustrate that the element possesses high precision and is insensitive to mesh distortions.
文摘目的:探讨去整合素-金属蛋白酶17(A disintegrin and metalloproteinase 17,ADAM17)蛋白在食管鳞癌中的表达及其与淋巴结转移的相关性。方法:采用免疫组化SP法检测80例食管鳞癌及对应的正常食管黏膜中ADAM17蛋白的表达水平。采用χ2检验、Pearson相关分析进行统计学处理。结果:食管鳞癌及其切缘的正常食管粘膜中ADAM17蛋白表达阳性率分别为66.25%和6.25%,差异有统计学意义(P<0.05)。食管鳞癌中ADAM17蛋白表达阳性率与淋巴结转移呈正相关(P<0.05)。结论:ADAM17蛋白在食管鳞癌中高表达,在食管鳞癌的发生、侵袭转移中起重要作用。
