The undesired {111} texture component for the magnetic properties mainly exists in the sheets of electrical steels by the conventional process, whereas the sheets with the non-{111} texture can be obtained by α→γ→...The undesired {111} texture component for the magnetic properties mainly exists in the sheets of electrical steels by the conventional process, whereas the sheets with the non-{111} texture can be obtained by α→γ→α transformation. In this paper, we mainly investigate the opposite relationship between orientation selection and texture memory in the deformed ultra-low carbon steel sheet during →→ transformation annealing. A 0.5 mm thick hot-rolled sheet is directly subjected to transformation. The result shows that the specific transformation textures are not possible to generate in the sheets without deformation. Besides, transformation annealing is conducted on the recrystallized sheets in hydrogen and vacuum, respectively. The near {100} and {110} grains have the growth advantage at the atmosphere/metal interface, and the initial ferrite textures are retained in vacuum. Cold-rolled sheets with different thicknesses are annealed for transformation in vacuum, hydrogen and nitrogen, respectively.The near {100} and {110} textures are still the preferential orientations at the atmosphere/metal interface. When the surface grains have sufficiently large growth advantage, the {111} grains developed by texture memory effect will be annexed. Otherwise, the {111} grains at the center layer of the sheets are hard to be replaced, and they are retained after α→γ→α transformation cycle. The results of deformed sheets annealed with different heating rates in hydrogen show that the growth of initial recrystallization grains has a great effect on variant selection.展开更多
目的探讨雾化吸入重组人干扰素α1b(IFN-α1b)对重症手足口病(HFMD)患儿血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、干扰素-γ(IFN-γ)、C-反应蛋白(CRP)水平的影响。方法选取2015年6月至2016年10月西安市儿童医院收治的重症手足口...目的探讨雾化吸入重组人干扰素α1b(IFN-α1b)对重症手足口病(HFMD)患儿血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、干扰素-γ(IFN-γ)、C-反应蛋白(CRP)水平的影响。方法选取2015年6月至2016年10月西安市儿童医院收治的重症手足口病患儿100例,随机分为IFN-α1b plus HFMD实验组(50例)及HFMD对照组(50例),HFMD对照组给予常规治疗,IFN-α1b plus HFMD实验组在常规治疗基础上连续雾化吸入IFN-α1b治疗5d,采用酶联免疫吸附试验(ELISA)法检测治疗后两组患儿血清IL-6、TNF-α、IFN-γ及CRP水平。结果治疗第1天,两组患儿血清IL-6、TNF-α、IFN-γ和CRP浓度水平相近,差异均无统计学意义(t值分别为2.542、3.916、1.237、4.132,均P>0.05),治疗第3天、第5天,IFN-α1b plus HFMD实验组患儿血清IL-6、TNF-α、IFN-γ和CRP浓度水平明显下降,低于HFMD对照组,差异均有统计学意义(第3天:t值分别为11.023、11.867、10.745、15.264;第5天:t值分别为14.568、13.248、11.458、14.852;均P<0.05)。结论重组人IFN-α1b能够通过抗病毒作用和抑制细胞因子作用减轻炎症反应,从而减缓重症HFMD的发展。展开更多
基金supported by the National Natural Science Foundation of China(Grant No.51271028)
文摘The undesired {111} texture component for the magnetic properties mainly exists in the sheets of electrical steels by the conventional process, whereas the sheets with the non-{111} texture can be obtained by α→γ→α transformation. In this paper, we mainly investigate the opposite relationship between orientation selection and texture memory in the deformed ultra-low carbon steel sheet during →→ transformation annealing. A 0.5 mm thick hot-rolled sheet is directly subjected to transformation. The result shows that the specific transformation textures are not possible to generate in the sheets without deformation. Besides, transformation annealing is conducted on the recrystallized sheets in hydrogen and vacuum, respectively. The near {100} and {110} grains have the growth advantage at the atmosphere/metal interface, and the initial ferrite textures are retained in vacuum. Cold-rolled sheets with different thicknesses are annealed for transformation in vacuum, hydrogen and nitrogen, respectively.The near {100} and {110} textures are still the preferential orientations at the atmosphere/metal interface. When the surface grains have sufficiently large growth advantage, the {111} grains developed by texture memory effect will be annexed. Otherwise, the {111} grains at the center layer of the sheets are hard to be replaced, and they are retained after α→γ→α transformation cycle. The results of deformed sheets annealed with different heating rates in hydrogen show that the growth of initial recrystallization grains has a great effect on variant selection.
文摘目的探讨雾化吸入重组人干扰素α1b(IFN-α1b)对重症手足口病(HFMD)患儿血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、干扰素-γ(IFN-γ)、C-反应蛋白(CRP)水平的影响。方法选取2015年6月至2016年10月西安市儿童医院收治的重症手足口病患儿100例,随机分为IFN-α1b plus HFMD实验组(50例)及HFMD对照组(50例),HFMD对照组给予常规治疗,IFN-α1b plus HFMD实验组在常规治疗基础上连续雾化吸入IFN-α1b治疗5d,采用酶联免疫吸附试验(ELISA)法检测治疗后两组患儿血清IL-6、TNF-α、IFN-γ及CRP水平。结果治疗第1天,两组患儿血清IL-6、TNF-α、IFN-γ和CRP浓度水平相近,差异均无统计学意义(t值分别为2.542、3.916、1.237、4.132,均P>0.05),治疗第3天、第5天,IFN-α1b plus HFMD实验组患儿血清IL-6、TNF-α、IFN-γ和CRP浓度水平明显下降,低于HFMD对照组,差异均有统计学意义(第3天:t值分别为11.023、11.867、10.745、15.264;第5天:t值分别为14.568、13.248、11.458、14.852;均P<0.05)。结论重组人IFN-α1b能够通过抗病毒作用和抑制细胞因子作用减轻炎症反应,从而减缓重症HFMD的发展。
