Sodium titanate nanotubes have been prepared and modified chemically with CdSe quantum dots (QDs) using bifunctional modifiers (HS-COOH). Their photovoltaic characteristics have also been studied. The results indicate...Sodium titanate nanotubes have been prepared and modified chemically with CdSe quantum dots (QDs) using bifunctional modifiers (HS-COOH). Their photovoltaic characteristics have also been studied. The results indicate that the surface photovoltage response of nanotubes extends to the visible light region, and the intensity of surface photovoltage is enhanced after modification with CdSe QDs. The field-induced surface photovoltage spectroscopy (FISPS) shows that sodium titanate nanotubes have different photovoltaic response before and after modification. That is, the surface photovoltaic re-sponse of pure sodium titanate nanotubes increases with the enhancement of positive applied bias and decreases with the enhancement of negative applied bias. Meanwhile, the surface photovoltaic re-sponse of CdSe modified sodium titanate nanotubes is different from that of the pure sodium titanate nanotubes. The whole spectrum increases with the enhancement of applied bias at the first stage. However, when the applied bias reaches a certain value, the surface photovoltage response keeps in-creasing in some spectrum regions, while decreasing in other spectrum regions. This novel phe-nomenon is explained by using an electric field induced dipole model.展开更多
文摘目的:探讨针刀松解联合芒针刺腰夹脊穴治疗腰椎间盘突出症(Lumbar Disc Herniation,LDH)的临床疗效。方法:选择2019年4月-2021年2月于徐州市贾汪区人民医院就诊的LDH患者64例,根据随机原则分为试验组(32例)与对照组(32例),对照组患者针刀松解法治疗,试验组患者在此基础上联合芒针刺腰夹脊穴治疗,比较两组患者的腰椎功能及生活质量。结果:试验组患者治疗后的麦吉尔疼痛问卷(McGill Pain Questionnaire,MPQ)评分、Oswestry功能障碍指数(Oswestry Disability Index,ODI)评分低于对照组(P <0.05);试验组患者治疗后的日本骨科协会评估治疗分数(Japanese Orthopaedic Association Scores,JOA)高于对照组(P <0.05);试验组患者治疗后的腰腿疼痛、肢体麻木、肢体沉重、腰膝酸软积分均低于对照组(P <0.05);试验组患者治疗后的急性疼痛发作次数、持续时间均少于对照组(P <0.05);试验组患者治疗后的36项简明健康状况评价量表(36-item Short Form Health Assessment Scale,SF-36)8个维度得分均高于对照组(P <0.05)。结论:针刀松解联合芒针刺腰夹脊穴治疗可有效减轻LDH患者的腰腿疼痛症状,改善患者的腰椎功能,从而提高患者的生活质量。
基金the Program for New Century Excellent Talents in University (Grant No. NCET-04-0653)973 Plan (Grant No. 2007CB616911)the National Natural Science Foundation of China (Grant Nos. 20371015 and 90306010)
文摘Sodium titanate nanotubes have been prepared and modified chemically with CdSe quantum dots (QDs) using bifunctional modifiers (HS-COOH). Their photovoltaic characteristics have also been studied. The results indicate that the surface photovoltage response of nanotubes extends to the visible light region, and the intensity of surface photovoltage is enhanced after modification with CdSe QDs. The field-induced surface photovoltage spectroscopy (FISPS) shows that sodium titanate nanotubes have different photovoltaic response before and after modification. That is, the surface photovoltaic re-sponse of pure sodium titanate nanotubes increases with the enhancement of positive applied bias and decreases with the enhancement of negative applied bias. Meanwhile, the surface photovoltaic re-sponse of CdSe modified sodium titanate nanotubes is different from that of the pure sodium titanate nanotubes. The whole spectrum increases with the enhancement of applied bias at the first stage. However, when the applied bias reaches a certain value, the surface photovoltage response keeps in-creasing in some spectrum regions, while decreasing in other spectrum regions. This novel phe-nomenon is explained by using an electric field induced dipole model.
