The high-temperature permittivity of quartz fibre-reinforced silicon dioxide (SiO2/SiO2 ) nano-composites is studied on the basis of the multi-scale theoretical model.We obtain the permittivity of the SiO2/SiO2 at hig...The high-temperature permittivity of quartz fibre-reinforced silicon dioxide (SiO2/SiO2 ) nano-composites is studied on the basis of the multi-scale theoretical model.We obtain the permittivity of the SiO2/SiO2 at high temperature,which is dependent on the temperature by data-mining.The result shows that the permittivity and loss tangent obtained by data-mining are well consistent with the measured ones.The high-temperature permittivity can be well predicted for SiO2/SiO2 by the as-proposed model and the data-mining method.展开更多
目的 脑血管痉挛是脑动脉瘤患者接受血管内介入栓塞术治疗后的常见并发症,现分析通过法舒地尔联合尼莫地平对该并发症进行预防的临床效果。方法 采用随机数字表法将2019年1月1日至2020年12月31日期间于新疆维吾尔自治区克拉玛依市独山...目的 脑血管痉挛是脑动脉瘤患者接受血管内介入栓塞术治疗后的常见并发症,现分析通过法舒地尔联合尼莫地平对该并发症进行预防的临床效果。方法 采用随机数字表法将2019年1月1日至2020年12月31日期间于新疆维吾尔自治区克拉玛依市独山子人民医院接受血管内介入栓塞术治疗的脑动脉瘤患者,共计80例,分为对照组与观察组,各40例。所有患者均接受尼莫地平治疗,观察组联用法舒地尔治疗。对比治疗效果。结果 观察组总有效率高于对照组(97.50% vs 80.00%,P<0.05);观察组改良Rankin量表(modified Rankin scale,mRS)显著低于对照组[(0.90±0.15) vs (2.80±0.28),P<0.05];观察组格拉斯哥昏迷(Glasgow Coma Scale,GCS)及Barthel评分均显著高于对照组GCS和Barthel评分,分别为[(14.49±0.80) vs (10.98±0.65),P<0.05]、[(79.97±4.44) vs (55.82±3.35),P<0.05];观察组大脑后动脉(posterior cerebral artery,PCA)及大脑中动脉(middle cerebral artery,MCA)平均血流速度均显著低于对照组PCA及MCA,分别为[(38.41±1.76) vs (45.54±2.99)cm/s,P<0.05]、[(81.44±2.24) vs (92.33±4.43)cm/s,P<0.05];观察组患者基质金属蛋白酶(matrix metalloprotein-9,MMP-9)及核因子κB(nuclear factor kappa-B,NF-κB)均显著低于对照组MMP-9及NF-κB,分别为[(133.33±8.88) vs (165.44±10.55)nmol/L,P<0.05]、[(0.12±0.01) vs (0.25±0.03)nmol/L,P<0.05];两组不良反应发生率比较无显著差异(P>0.05)。结论 血管内介入栓塞术后的脑动脉瘤患者,给予法舒地尔联合尼莫地平治疗,可有效降低术后脑血管痉挛的发生风险,降低动脉血流速度和昏迷指数,改善神经功能,控制血清炎症因子水平,效果显著且安全性较高。展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 50872159,50972014,51072024 and 51132002.
文摘The high-temperature permittivity of quartz fibre-reinforced silicon dioxide (SiO2/SiO2 ) nano-composites is studied on the basis of the multi-scale theoretical model.We obtain the permittivity of the SiO2/SiO2 at high temperature,which is dependent on the temperature by data-mining.The result shows that the permittivity and loss tangent obtained by data-mining are well consistent with the measured ones.The high-temperature permittivity can be well predicted for SiO2/SiO2 by the as-proposed model and the data-mining method.
文摘目的 脑血管痉挛是脑动脉瘤患者接受血管内介入栓塞术治疗后的常见并发症,现分析通过法舒地尔联合尼莫地平对该并发症进行预防的临床效果。方法 采用随机数字表法将2019年1月1日至2020年12月31日期间于新疆维吾尔自治区克拉玛依市独山子人民医院接受血管内介入栓塞术治疗的脑动脉瘤患者,共计80例,分为对照组与观察组,各40例。所有患者均接受尼莫地平治疗,观察组联用法舒地尔治疗。对比治疗效果。结果 观察组总有效率高于对照组(97.50% vs 80.00%,P<0.05);观察组改良Rankin量表(modified Rankin scale,mRS)显著低于对照组[(0.90±0.15) vs (2.80±0.28),P<0.05];观察组格拉斯哥昏迷(Glasgow Coma Scale,GCS)及Barthel评分均显著高于对照组GCS和Barthel评分,分别为[(14.49±0.80) vs (10.98±0.65),P<0.05]、[(79.97±4.44) vs (55.82±3.35),P<0.05];观察组大脑后动脉(posterior cerebral artery,PCA)及大脑中动脉(middle cerebral artery,MCA)平均血流速度均显著低于对照组PCA及MCA,分别为[(38.41±1.76) vs (45.54±2.99)cm/s,P<0.05]、[(81.44±2.24) vs (92.33±4.43)cm/s,P<0.05];观察组患者基质金属蛋白酶(matrix metalloprotein-9,MMP-9)及核因子κB(nuclear factor kappa-B,NF-κB)均显著低于对照组MMP-9及NF-κB,分别为[(133.33±8.88) vs (165.44±10.55)nmol/L,P<0.05]、[(0.12±0.01) vs (0.25±0.03)nmol/L,P<0.05];两组不良反应发生率比较无显著差异(P>0.05)。结论 血管内介入栓塞术后的脑动脉瘤患者,给予法舒地尔联合尼莫地平治疗,可有效降低术后脑血管痉挛的发生风险,降低动脉血流速度和昏迷指数,改善神经功能,控制血清炎症因子水平,效果显著且安全性较高。
