The polymer-polymer interaction parameters of STVPh/PPC blends were calculated by Hildebrand solubility parameter. Accordingly the miscibility of the blends was predicted. The segment motion and miscibility of blends ...The polymer-polymer interaction parameters of STVPh/PPC blends were calculated by Hildebrand solubility parameter. Accordingly the miscibility of the blends was predicted. The segment motion and miscibility of blends were also investigated by electron spin resonance(ESR) spin probe method. ESR spectra were measured as a function of temperature and the hydroxyl content in STVPh. For all blends, two spectral components with different rates of motion, a "fast" and a "slow" component were observed. This result showed that the nitrooxide radical existed in two different matrixes, a more flexible PPC-rich and a more rigid STVPh-rich micro domain. In addition, T 5mT and rotational correlation time τ c and activation energy E a were obtained from ESR spectra, which indicated the hydrogen bonding between the carbonyl and ether oxygen in PPC and the hydroxyl in STVPh was enhanced with increasing the hydroxyl content in STVPh.展开更多
目的系统评价前交叉韧带重建术后患者开链运动与闭链运动康复效果。方法计算机检索PubMed、Web of Science、EMbase、EBSCO、CINAHL、中国生物医学文献数据库、中国知网、万方和维普数据库,收集所有前交叉韧带重建术后患者开链运动对比...目的系统评价前交叉韧带重建术后患者开链运动与闭链运动康复效果。方法计算机检索PubMed、Web of Science、EMbase、EBSCO、CINAHL、中国生物医学文献数据库、中国知网、万方和维普数据库,收集所有前交叉韧带重建术后患者开链运动对比闭链运动康复治疗效果的随机对照和临床对照研究。2名研究员按照纳入和排除标准独立检索、筛选文献、评价纳入文献的质量,并提取资料,使用Revman 5.3进行Meta分析。结果共纳入9篇文献,均为随机对照研究。Meta分析结果显示:前交叉韧带重建术后开链运动组和闭链运动组相比,术后3个月胫骨前移度(KT-1000)评分差异具有统计学意义[OR=0.55,95%CI(0.41,0.70)]。其余各项指标,包括Lysholm膝关节功能评分、Hughston评分在术后各时段2组比较差异均无统计学意义。结论闭链运动更利于前交叉韧带重建术后早期康复,但后期康复最好结合2种运动方式,并针对患者个体制定严密的康复计划。展开更多
文摘The polymer-polymer interaction parameters of STVPh/PPC blends were calculated by Hildebrand solubility parameter. Accordingly the miscibility of the blends was predicted. The segment motion and miscibility of blends were also investigated by electron spin resonance(ESR) spin probe method. ESR spectra were measured as a function of temperature and the hydroxyl content in STVPh. For all blends, two spectral components with different rates of motion, a "fast" and a "slow" component were observed. This result showed that the nitrooxide radical existed in two different matrixes, a more flexible PPC-rich and a more rigid STVPh-rich micro domain. In addition, T 5mT and rotational correlation time τ c and activation energy E a were obtained from ESR spectra, which indicated the hydrogen bonding between the carbonyl and ether oxygen in PPC and the hydroxyl in STVPh was enhanced with increasing the hydroxyl content in STVPh.
文摘目的系统评价前交叉韧带重建术后患者开链运动与闭链运动康复效果。方法计算机检索PubMed、Web of Science、EMbase、EBSCO、CINAHL、中国生物医学文献数据库、中国知网、万方和维普数据库,收集所有前交叉韧带重建术后患者开链运动对比闭链运动康复治疗效果的随机对照和临床对照研究。2名研究员按照纳入和排除标准独立检索、筛选文献、评价纳入文献的质量,并提取资料,使用Revman 5.3进行Meta分析。结果共纳入9篇文献,均为随机对照研究。Meta分析结果显示:前交叉韧带重建术后开链运动组和闭链运动组相比,术后3个月胫骨前移度(KT-1000)评分差异具有统计学意义[OR=0.55,95%CI(0.41,0.70)]。其余各项指标,包括Lysholm膝关节功能评分、Hughston评分在术后各时段2组比较差异均无统计学意义。结论闭链运动更利于前交叉韧带重建术后早期康复,但后期康复最好结合2种运动方式,并针对患者个体制定严密的康复计划。
