对比3种橡胶改性方式下的橡胶水稳碎石混合料,通过电镜扫描(scanning electron microscope,SEM)与能谱分析(energy dispersive spectrometry,EDS)选取最优的改性方法,对橡胶改性处理之后的水稳碎石混合料进行力学性能与收缩性能试验。...对比3种橡胶改性方式下的橡胶水稳碎石混合料,通过电镜扫描(scanning electron microscope,SEM)与能谱分析(energy dispersive spectrometry,EDS)选取最优的改性方法,对橡胶改性处理之后的水稳碎石混合料进行力学性能与收缩性能试验。结果表明:经NaOH与硅烷偶联剂KH-570复合改性处理之后的橡胶水稳碎石混合料,其橡胶-水泥基体界面过渡区的平均裂缝宽度最小,水化硅酸钙凝胶生成比例最大,界面过渡区结构最为紧密。在水稳碎石混合料中掺入复合改性处理后的橡胶,能够大大减少因掺入橡胶颗粒对混合料带来的强度损失,材料的抗收缩性能也未因橡胶颗粒的改性处理而减弱。展开更多
A total of 26 myopic patients （52 eyes） underwent laser in situ keratomileusis. In vivo confocal microscopy revealed that most of the regenerated corneal subbasal nerve fibers in the comeal flap originated from the ...A total of 26 myopic patients （52 eyes） underwent laser in situ keratomileusis. In vivo confocal microscopy revealed that most of the regenerated corneal subbasal nerve fibers in the comeal flap originated from the stump of corneal subbasal nerve fibers outside the ablation zone and extended towards the center of the cornea in all patients. Meanwhile, new fibers were also found to directly regenerate from deep in the stroma in some cases. Approximately 94% of regenerated corneal subbasal nerve fibers （73/78 eyes） regrew vertically into the peripheral central 6-mm circle area 1 month after surgery, 78% （28/36 eyes） grew into the central 3 6 mm area at 2 months, and 23% into the central 3-mm circle area at 3 months. In addition, there was no significant difference in corneal subbasal nerve fiber regenerative capacity between the basic fibroblast growth factor group and the 20% （vN） deproteinized extract of calf blood group. The majority of corneal subbasal nerve fiber regeneration occurred from the stump of corneal subbasal nerve fibers outside the corneal flap and the remaining growth occurred deep within the stroma.展开更多
文摘对比3种橡胶改性方式下的橡胶水稳碎石混合料,通过电镜扫描(scanning electron microscope,SEM)与能谱分析(energy dispersive spectrometry,EDS)选取最优的改性方法,对橡胶改性处理之后的水稳碎石混合料进行力学性能与收缩性能试验。结果表明:经NaOH与硅烷偶联剂KH-570复合改性处理之后的橡胶水稳碎石混合料,其橡胶-水泥基体界面过渡区的平均裂缝宽度最小,水化硅酸钙凝胶生成比例最大,界面过渡区结构最为紧密。在水稳碎石混合料中掺入复合改性处理后的橡胶,能够大大减少因掺入橡胶颗粒对混合料带来的强度损失,材料的抗收缩性能也未因橡胶颗粒的改性处理而减弱。
文摘A total of 26 myopic patients （52 eyes） underwent laser in situ keratomileusis. In vivo confocal microscopy revealed that most of the regenerated corneal subbasal nerve fibers in the comeal flap originated from the stump of corneal subbasal nerve fibers outside the ablation zone and extended towards the center of the cornea in all patients. Meanwhile, new fibers were also found to directly regenerate from deep in the stroma in some cases. Approximately 94% of regenerated corneal subbasal nerve fibers （73/78 eyes） regrew vertically into the peripheral central 6-mm circle area 1 month after surgery, 78% （28/36 eyes） grew into the central 3 6 mm area at 2 months, and 23% into the central 3-mm circle area at 3 months. In addition, there was no significant difference in corneal subbasal nerve fiber regenerative capacity between the basic fibroblast growth factor group and the 20% （vN） deproteinized extract of calf blood group. The majority of corneal subbasal nerve fiber regeneration occurred from the stump of corneal subbasal nerve fibers outside the corneal flap and the remaining growth occurred deep within the stroma.
