Traditional synthesis made outstanding achievements but still suffers various drawbacks,such as manual operation,poor efficiency,and lack of reproducibility.Thanks to the development of laboratory automation,synthetic...Traditional synthesis made outstanding achievements but still suffers various drawbacks,such as manual operation,poor efficiency,and lack of reproducibility.Thanks to the development of laboratory automation,synthetic chemistry is now chasing a pavement from a labor-intensive process to intelligent automation.Herein,we highlight some of the most recent representative breakthroughs in automated synthesis and present an outlook for this field.We hope this Topic can arouse chemists'interest in automated synthe-sis and drive synthetic automation to a better intelligent and automatic way.展开更多
Diffusion of implanted As ion in relaxed Si_(1-x)Ge_(x) was studied as a function of Ge content over a wide range of Ge fractions(0-43%) and annealing temperature,and was compared to diffusion in Si.Experimental resul...Diffusion of implanted As ion in relaxed Si_(1-x)Ge_(x) was studied as a function of Ge content over a wide range of Ge fractions(0-43%) and annealing temperature,and was compared to diffusion in Si.Experimental results showed that the As diffusion is enhanced with increasing annealing temperature for certain Ge content and strongly dependent on the higher Ge content and the faster As diffusion.展开更多
The damage removal and strain relaxation in the As^(+)-implanted Si_(0.57)Ge_(0.43) epilayers were studied by double-crystal x-ray diffractornetry and transmission electron microscopy.The results presented in this pap...The damage removal and strain relaxation in the As^(+)-implanted Si_(0.57)Ge_(0.43) epilayers were studied by double-crystal x-ray diffractornetry and transmission electron microscopy.The results presented in this paper indicate that rapid thermal annealing at temperatures higher than 950℃ results in complete removal of irradiation damage accompained by the formation of GeAs precipitates which enhance the removal process of dislocations.展开更多
装配式钢结构的核心在于合理的连接构造及节点,提出一种新型预应力装配式梁-梁拼接节点,通过在腹板及下翼缘处设置法兰板及加劲板,实现节点快速拼接。为考察该节点的受力性能,对节点进行非线性有限元分析,模型充分考虑螺栓接触性能,深...装配式钢结构的核心在于合理的连接构造及节点,提出一种新型预应力装配式梁-梁拼接节点,通过在腹板及下翼缘处设置法兰板及加劲板,实现节点快速拼接。为考察该节点的受力性能,对节点进行非线性有限元分析,模型充分考虑螺栓接触性能,深入研究梁-梁拼接区的应力分布规律和刚度特性,并与试验结果对比。初始刚度的数值计算结果为5 537.5 k N·m/rad,与试验相差11.6%,极限弯矩误差为8.8%,与试验结果吻合较好;往复荷载作用下,连接法兰板的螺栓由摩擦型转为承压型连接。该类型节点整体受力合理、传力明确,符合工业化装配式钢结构体系的设计要求。展开更多
[目的]探讨运动控制训练对髋关节撞击综合征的影响。[方法] 2017年5月—2022年7月45例髋关节撞击综合征患者按照随机数字表法分为两组。其中,23例在常规基础上增加运动控制训练,22例仅行常规康复训练。比较两组治疗期情况及随访结果。[...[目的]探讨运动控制训练对髋关节撞击综合征的影响。[方法] 2017年5月—2022年7月45例髋关节撞击综合征患者按照随机数字表法分为两组。其中,23例在常规基础上增加运动控制训练,22例仅行常规康复训练。比较两组治疗期情况及随访结果。[结果]两组治疗周期、治疗次数、治疗顺应性VAS评分的差异无统计学意义(P>0.05)。随访时间平均(8.2±3.1)个月。随时间推移,两组疼痛VAS评分、屈髋肌力、伸髋肌力均显著改善(P<0.05);两组的Harris评分和SEBT评分均改善,训练组的改善有统计学意义(P<0.05),而常规组的变化无统计学意义(P>0.05)。末次随访时,训练组VAS评分[(2.2±1.0)vs (3.5±1.0), P<0.05]、Harris评分[(79.4±6.9) vs (65.2±6.2), P<0.05]、屈髋肌力[(44.8±9.1)Nm vs (35.9±8.2)Nm, P<0.05]、伸髋肌力[(68.4±6.7)Nm vs (56.3±7.0)Nm, P<0.05]和SEBT评分[(92.2±14.2) vs (81.6±17.0), P<0.05]均显著优于常规组。[结论]运动控制训练可以有效缓解髋关节撞击综合征患者的疼痛症状,增加髋关节肌肉力量及协调能力,提高髋关节整体稳定性。展开更多
[目的]观察采用经颅电刺激(transcranial direct current stimulation, tDCS)联合核心肌锻炼治疗非特异性腰痛(nonspecific low back pain, NLBP)的临床疗效。[方法] 2017年6月—2020年6月,64例NLBP患者纳入本研究,随机分为两组。其中,3...[目的]观察采用经颅电刺激(transcranial direct current stimulation, tDCS)联合核心肌锻炼治疗非特异性腰痛(nonspecific low back pain, NLBP)的临床疗效。[方法] 2017年6月—2020年6月,64例NLBP患者纳入本研究,随机分为两组。其中,32例采用经颅电刺激联合核心肌锻炼进行治疗(联合组),32例采用常规理疗(常规组)。比较两组患者早期及随访结果。[结果]联合组治疗周期小于常规组,但差异无统计学意义(P>0.05)。治疗过程中患者无不良反应发生,两组患者治疗顺应性差异无统计学意义(P>0.05)。联合组治疗费用及患者满意度显著高于常规组(P<0.05)。所有患者均获随访,平均(9.34±4.12)个月。联合组恢复日常工作时间及复发率均显著优于常规组(P<0.05)。治疗后及随访过程中联合组VAS评分、ODI指数、OSI、APSI、MLSI稳定指数较治疗前均显著下降(P<0.05), JOA评分显著增高(P<0.05)。常规组治疗后及随访过程中VAS评分、ODI指数较治疗前显著降低(P<0.05),JOA评分显著增高(P<0.05),而OSI、APSI、MLSI稳定指数与治疗前相比,差异均无统计学意义(P>0.05)。治疗前两组患者上述指标的差异均无统计学意义(P>0.05)。治疗终、治疗后6个月及末次随访时,联合组上述指标均显著优于常规组(P<0.05)。[结论]经颅电刺激联合核心肌锻炼能有效缓解非特异性腰痛患者的疼痛症状,改善功能障碍及姿势控制能力。展开更多
基金support from Guangzhou Laboratory,Bioland Laboratory,and the National Natural Science Foundation of China(22071249).
文摘Traditional synthesis made outstanding achievements but still suffers various drawbacks,such as manual operation,poor efficiency,and lack of reproducibility.Thanks to the development of laboratory automation,synthetic chemistry is now chasing a pavement from a labor-intensive process to intelligent automation.Herein,we highlight some of the most recent representative breakthroughs in automated synthesis and present an outlook for this field.We hope this Topic can arouse chemists'interest in automated synthe-sis and drive synthetic automation to a better intelligent and automatic way.
基金Supported by the National Natural Science Foundation of China.
文摘Diffusion of implanted As ion in relaxed Si_(1-x)Ge_(x) was studied as a function of Ge content over a wide range of Ge fractions(0-43%) and annealing temperature,and was compared to diffusion in Si.Experimental results showed that the As diffusion is enhanced with increasing annealing temperature for certain Ge content and strongly dependent on the higher Ge content and the faster As diffusion.
文摘The damage removal and strain relaxation in the As^(+)-implanted Si_(0.57)Ge_(0.43) epilayers were studied by double-crystal x-ray diffractornetry and transmission electron microscopy.The results presented in this paper indicate that rapid thermal annealing at temperatures higher than 950℃ results in complete removal of irradiation damage accompained by the formation of GeAs precipitates which enhance the removal process of dislocations.
文摘装配式钢结构的核心在于合理的连接构造及节点,提出一种新型预应力装配式梁-梁拼接节点,通过在腹板及下翼缘处设置法兰板及加劲板,实现节点快速拼接。为考察该节点的受力性能,对节点进行非线性有限元分析,模型充分考虑螺栓接触性能,深入研究梁-梁拼接区的应力分布规律和刚度特性,并与试验结果对比。初始刚度的数值计算结果为5 537.5 k N·m/rad,与试验相差11.6%,极限弯矩误差为8.8%,与试验结果吻合较好;往复荷载作用下,连接法兰板的螺栓由摩擦型转为承压型连接。该类型节点整体受力合理、传力明确,符合工业化装配式钢结构体系的设计要求。
文摘[目的]探讨运动控制训练对髋关节撞击综合征的影响。[方法] 2017年5月—2022年7月45例髋关节撞击综合征患者按照随机数字表法分为两组。其中,23例在常规基础上增加运动控制训练,22例仅行常规康复训练。比较两组治疗期情况及随访结果。[结果]两组治疗周期、治疗次数、治疗顺应性VAS评分的差异无统计学意义(P>0.05)。随访时间平均(8.2±3.1)个月。随时间推移,两组疼痛VAS评分、屈髋肌力、伸髋肌力均显著改善(P<0.05);两组的Harris评分和SEBT评分均改善,训练组的改善有统计学意义(P<0.05),而常规组的变化无统计学意义(P>0.05)。末次随访时,训练组VAS评分[(2.2±1.0)vs (3.5±1.0), P<0.05]、Harris评分[(79.4±6.9) vs (65.2±6.2), P<0.05]、屈髋肌力[(44.8±9.1)Nm vs (35.9±8.2)Nm, P<0.05]、伸髋肌力[(68.4±6.7)Nm vs (56.3±7.0)Nm, P<0.05]和SEBT评分[(92.2±14.2) vs (81.6±17.0), P<0.05]均显著优于常规组。[结论]运动控制训练可以有效缓解髋关节撞击综合征患者的疼痛症状,增加髋关节肌肉力量及协调能力,提高髋关节整体稳定性。
文摘[目的]观察采用经颅电刺激(transcranial direct current stimulation, tDCS)联合核心肌锻炼治疗非特异性腰痛(nonspecific low back pain, NLBP)的临床疗效。[方法] 2017年6月—2020年6月,64例NLBP患者纳入本研究,随机分为两组。其中,32例采用经颅电刺激联合核心肌锻炼进行治疗(联合组),32例采用常规理疗(常规组)。比较两组患者早期及随访结果。[结果]联合组治疗周期小于常规组,但差异无统计学意义(P>0.05)。治疗过程中患者无不良反应发生,两组患者治疗顺应性差异无统计学意义(P>0.05)。联合组治疗费用及患者满意度显著高于常规组(P<0.05)。所有患者均获随访,平均(9.34±4.12)个月。联合组恢复日常工作时间及复发率均显著优于常规组(P<0.05)。治疗后及随访过程中联合组VAS评分、ODI指数、OSI、APSI、MLSI稳定指数较治疗前均显著下降(P<0.05), JOA评分显著增高(P<0.05)。常规组治疗后及随访过程中VAS评分、ODI指数较治疗前显著降低(P<0.05),JOA评分显著增高(P<0.05),而OSI、APSI、MLSI稳定指数与治疗前相比,差异均无统计学意义(P>0.05)。治疗前两组患者上述指标的差异均无统计学意义(P>0.05)。治疗终、治疗后6个月及末次随访时,联合组上述指标均显著优于常规组(P<0.05)。[结论]经颅电刺激联合核心肌锻炼能有效缓解非特异性腰痛患者的疼痛症状,改善功能障碍及姿势控制能力。
