目的:对比高嵌体与全冠在修复牙体缺损中的美学效果及预后。方法:选取2020年6月-2022年1月笔者医院收治的牙体缺损患者120例(共229颗患牙),采用随机数字法分为对照组(60例,113颗患牙)和观察组(60例,116颗患牙),对照组采用常规全瓷冠修...目的:对比高嵌体与全冠在修复牙体缺损中的美学效果及预后。方法:选取2020年6月-2022年1月笔者医院收治的牙体缺损患者120例(共229颗患牙),采用随机数字法分为对照组(60例,113颗患牙)和观察组(60例,116颗患牙),对照组采用常规全瓷冠修复治疗,观察组采用CAD/CAM全瓷高嵌体修复治疗,观察两组的修复时间(备牙时间、取模时间和总体操作时间),治疗后第6个月、12个月及18个月的修复效果,以及治疗前、治疗后第3个月牙周指标及龈沟液生化指标[C反应蛋白(C-reactive protein,CRP)、人CXC趋化因子配体16(CXC chemokine ligand 16,CXCL16)、白细胞介素1β(Interleukin-1β,IL-1β)]变化,对比两组牙齿美观满意度。结果:观察组备牙时间、取模时间和总体操作时间均显著低于对照组(P<0.05);观察组、对照组治疗后第6个月、12个月、18个月修复优良率分别为100% vs 100%、97.41% vs 85.84%、96.55% vs 83.19%,两组治疗后12、18个月比较差异有统计学意义(P<0.05);治疗后第3个月,两组出血指数(Bleeding index,BI)、菌斑指数(Plaque index,PLI)、牙龈指数(Gingival index,GI)及龈沟液CRP、CXCL16、IL-1β水平均显著降低(P<0.05),且观察组显著低于对照组(P<0.05),两组咀嚼能力显著升高,且观察组显著高于对照组(均P<0.05);观察组患者对修复体满意度(98.34%)显著高于对照组(81.67%)(P<0.05)。结论:CAD/CAM全瓷高嵌体技术应用于修复牙体缺损临床效果显著,可明显改善牙周情况及炎症反应,远期修复效果好,美观度高,患者满意度高,值得临床推广应用。展开更多
目的探讨单切口[母]长屈肌腱转位修复跟腱缺损的临床效果。方法报道2019年9月-2021年12月接受单切口[母]长屈肌腱转位治疗的跟腱缺损患者14例。其中慢性跟腱断裂5例,慢性跟腱炎9例。临床观察指标:⑴术后2周内伤口愈合情况;⑵比较术后1...目的探讨单切口[母]长屈肌腱转位修复跟腱缺损的临床效果。方法报道2019年9月-2021年12月接受单切口[母]长屈肌腱转位治疗的跟腱缺损患者14例。其中慢性跟腱断裂5例,慢性跟腱炎9例。临床观察指标:⑴术后2周内伤口愈合情况;⑵比较术后1年与术前的VAS评分,AOFAS踝及后足评分,跟腱(Victorian institute of sports assessment achilles questionnaire,VISA-A)评分及AOFAS[母]趾评分。结果14例均顺利完成手术,手术时间55~110 min,平均(87.14±14.89)min。伤口均一期愈合,14例均获随访,随访时间14~37个月,平均22.17个月。术后1年AOFAS踝及后足功能评分及跟腱VIAS-A评分分别为(92.29±6.44)分和(88.93±9.03)分,明显高于术前的(53.71±14.35)分及(47.64±7.59)分(P<0.001);VAS评分为(0.36±0.63)分,明显低于术前的(5.36±1.45)分(P<0.001);AOFAS[母]趾评分为(87.93±4.92)分,与术前的(89.29±5.35)分相比差别无统计学意义(P>0.05)。结论单切口[母]长屈肌腱转位修复跟腱缺损,能重建跟腱连续性,改善足踝部功能,提高患者生活质量。展开更多
Luminescence and defect properties of novel phosphor β-Zn 3(PO 4) 2:Zr 4+ were systematically investigated. Corresponding to its lowest optical absorption transition at 240 nm, phosphor emits a bluish-green light...Luminescence and defect properties of novel phosphor β-Zn 3(PO 4) 2:Zr 4+ were systematically investigated. Corresponding to its lowest optical absorption transition at 240 nm, phosphor emits a bluish-green light at 485 nm, which yields the Stokes shift about 20000 cm -1. The unusual optical properties of Zr 4+ ion are ascribed to its uncommon coordination environment. In addition it shows intensive bluish-green long lasting phosphorescence (LLP) due to the existence of electron trap, which is generated by aliovalent substitution of Zr 4+ ion for the cation site in the matrix as shown in thermoluminescence (TL) spectrum.展开更多
A preliminary study by our research group showed that 6-mm-long regeneration chamber bridging is equivalent to autologous nerve transplantation for the repair of 12-mm nerve defects. In this study, we compared the eff...A preliminary study by our research group showed that 6-mm-long regeneration chamber bridging is equivalent to autologous nerve transplantation for the repair of 12-mm nerve defects. In this study, we compared the efficacy of different lengths （6, 8, 10 mm） of nerve fragments bridging 6-mm regeneration chambers for the repair of 12-mm-long nerve defects. At 16 weeks after the regeneration chamber was implanted, the number, diameter and myelin sheath thickness of the regenerated nerve fibers, as well as the conduction velocity of the sciatic nerve and gastrocnemius muscle wet weight ratio, were similar to that observed with autologous nerve transplantation. Our results demonstrate that 6-, 8-and 10-mm-long nerve fragments bridging 6-mm regeneration chambers effectively repair 12-mm-long nerve defects. Because the chemoattractive capacity is not affected by the length of the nerve fragment, we suggest adopting 6-mm-long nerve fragments for the repair of peripheral nerve defects.展开更多
针对电力设备运行和维护中所产生的大量碎片化、非系统性以及相关性不足设备缺陷文本,提出了一种电力设备缺陷文本识别模型。使用基于全词掩码的预训练模型(bidirectional encoder representation from transform-ers,BERT)替换基于随...针对电力设备运行和维护中所产生的大量碎片化、非系统性以及相关性不足设备缺陷文本,提出了一种电力设备缺陷文本识别模型。使用基于全词掩码的预训练模型(bidirectional encoder representation from transform-ers,BERT)替换基于随机掩码的BERT模型,提高了对电力词汇的理解力。使用双向长短期记忆网络(bidirection-al long short-term memory,BiLSTM)提高了模型捕获上下文信息的能力,并提高了模型的鲁棒性,引入注意力机制(attention)可以更好地捕获电力设备缺陷实体之间的复杂依赖关系,从而进一步提升模型的表现。实验结果显示,该模型准确率、召回率、F1值分别为96.26%、96.94%、96.60%,在地点、缺陷内容和设备三种实体上的F1值均优于其他模型。展开更多
Electrochemical cyclic voltammetric（CV） scan was applied to inducing the partial oxidation and defects of carbon nanotubes（CNTs）.The electrochemically induced functional groups and physical defects were demonstrat...Electrochemical cyclic voltammetric（CV） scan was applied to inducing the partial oxidation and defects of carbon nanotubes（CNTs）.The electrochemically induced functional groups and physical defects were demonstrated to show positive effects on the nanotube capacitance,as exemplified by super-long CNT arrays as model for the easy fabrication of CNT electrodes.Specifically,the initial hydrophobic nanotube surface becomes hydrophilic and a ten-time enhancement in capacitance is observed with respect to the pristine CNT sample.Thus,the electrochemical CV pretreatment can be used as an effective approach to activate the CNT surface for an enhanced electrochemical performance in capacitors,and many other advanced devices beyond capacitors,such as electrochemical sensors and batteries.展开更多
文摘目的:对比高嵌体与全冠在修复牙体缺损中的美学效果及预后。方法:选取2020年6月-2022年1月笔者医院收治的牙体缺损患者120例(共229颗患牙),采用随机数字法分为对照组(60例,113颗患牙)和观察组(60例,116颗患牙),对照组采用常规全瓷冠修复治疗,观察组采用CAD/CAM全瓷高嵌体修复治疗,观察两组的修复时间(备牙时间、取模时间和总体操作时间),治疗后第6个月、12个月及18个月的修复效果,以及治疗前、治疗后第3个月牙周指标及龈沟液生化指标[C反应蛋白(C-reactive protein,CRP)、人CXC趋化因子配体16(CXC chemokine ligand 16,CXCL16)、白细胞介素1β(Interleukin-1β,IL-1β)]变化,对比两组牙齿美观满意度。结果:观察组备牙时间、取模时间和总体操作时间均显著低于对照组(P<0.05);观察组、对照组治疗后第6个月、12个月、18个月修复优良率分别为100% vs 100%、97.41% vs 85.84%、96.55% vs 83.19%,两组治疗后12、18个月比较差异有统计学意义(P<0.05);治疗后第3个月,两组出血指数(Bleeding index,BI)、菌斑指数(Plaque index,PLI)、牙龈指数(Gingival index,GI)及龈沟液CRP、CXCL16、IL-1β水平均显著降低(P<0.05),且观察组显著低于对照组(P<0.05),两组咀嚼能力显著升高,且观察组显著高于对照组(均P<0.05);观察组患者对修复体满意度(98.34%)显著高于对照组(81.67%)(P<0.05)。结论:CAD/CAM全瓷高嵌体技术应用于修复牙体缺损临床效果显著,可明显改善牙周情况及炎症反应,远期修复效果好,美观度高,患者满意度高,值得临床推广应用。
文摘目的探讨单切口[母]长屈肌腱转位修复跟腱缺损的临床效果。方法报道2019年9月-2021年12月接受单切口[母]长屈肌腱转位治疗的跟腱缺损患者14例。其中慢性跟腱断裂5例,慢性跟腱炎9例。临床观察指标:⑴术后2周内伤口愈合情况;⑵比较术后1年与术前的VAS评分,AOFAS踝及后足评分,跟腱(Victorian institute of sports assessment achilles questionnaire,VISA-A)评分及AOFAS[母]趾评分。结果14例均顺利完成手术,手术时间55~110 min,平均(87.14±14.89)min。伤口均一期愈合,14例均获随访,随访时间14~37个月,平均22.17个月。术后1年AOFAS踝及后足功能评分及跟腱VIAS-A评分分别为(92.29±6.44)分和(88.93±9.03)分,明显高于术前的(53.71±14.35)分及(47.64±7.59)分(P<0.001);VAS评分为(0.36±0.63)分,明显低于术前的(5.36±1.45)分(P<0.001);AOFAS[母]趾评分为(87.93±4.92)分,与术前的(89.29±5.35)分相比差别无统计学意义(P>0.05)。结论单切口[母]长屈肌腱转位修复跟腱缺损,能重建跟腱连续性,改善足踝部功能,提高患者生活质量。
文摘Luminescence and defect properties of novel phosphor β-Zn 3(PO 4) 2:Zr 4+ were systematically investigated. Corresponding to its lowest optical absorption transition at 240 nm, phosphor emits a bluish-green light at 485 nm, which yields the Stokes shift about 20000 cm -1. The unusual optical properties of Zr 4+ ion are ascribed to its uncommon coordination environment. In addition it shows intensive bluish-green long lasting phosphorescence (LLP) due to the existence of electron trap, which is generated by aliovalent substitution of Zr 4+ ion for the cation site in the matrix as shown in thermoluminescence (TL) spectrum.
基金supported by Key Scientific Research Projects of Liaoning Provincial Medical Peak Construction Engineering,No.2010074
文摘A preliminary study by our research group showed that 6-mm-long regeneration chamber bridging is equivalent to autologous nerve transplantation for the repair of 12-mm nerve defects. In this study, we compared the efficacy of different lengths （6, 8, 10 mm） of nerve fragments bridging 6-mm regeneration chambers for the repair of 12-mm-long nerve defects. At 16 weeks after the regeneration chamber was implanted, the number, diameter and myelin sheath thickness of the regenerated nerve fibers, as well as the conduction velocity of the sciatic nerve and gastrocnemius muscle wet weight ratio, were similar to that observed with autologous nerve transplantation. Our results demonstrate that 6-, 8-and 10-mm-long nerve fragments bridging 6-mm regeneration chambers effectively repair 12-mm-long nerve defects. Because the chemoattractive capacity is not affected by the length of the nerve fragment, we suggest adopting 6-mm-long nerve fragments for the repair of peripheral nerve defects.
文摘针对电力设备运行和维护中所产生的大量碎片化、非系统性以及相关性不足设备缺陷文本,提出了一种电力设备缺陷文本识别模型。使用基于全词掩码的预训练模型(bidirectional encoder representation from transform-ers,BERT)替换基于随机掩码的BERT模型,提高了对电力词汇的理解力。使用双向长短期记忆网络(bidirection-al long short-term memory,BiLSTM)提高了模型捕获上下文信息的能力,并提高了模型的鲁棒性,引入注意力机制(attention)可以更好地捕获电力设备缺陷实体之间的复杂依赖关系,从而进一步提升模型的表现。实验结果显示,该模型准确率、召回率、F1值分别为96.26%、96.94%、96.60%,在地点、缺陷内容和设备三种实体上的F1值均优于其他模型。
基金Supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education of China(No.20100732002)the National Natural Science Foundation of China(No.21004006)+2 种基金the Research Foundation for the Doctoral Program of Higher Education of China(No.20101101120036)the 111 Project in China(No.B07012)the Program for the New Century Excellent Talents in Universities of China(No.NCET-10-0047)
文摘Electrochemical cyclic voltammetric（CV） scan was applied to inducing the partial oxidation and defects of carbon nanotubes（CNTs）.The electrochemically induced functional groups and physical defects were demonstrated to show positive effects on the nanotube capacitance,as exemplified by super-long CNT arrays as model for the easy fabrication of CNT electrodes.Specifically,the initial hydrophobic nanotube surface becomes hydrophilic and a ten-time enhancement in capacitance is observed with respect to the pristine CNT sample.Thus,the electrochemical CV pretreatment can be used as an effective approach to activate the CNT surface for an enhanced electrochemical performance in capacitors,and many other advanced devices beyond capacitors,such as electrochemical sensors and batteries.
文摘针对现有基于深度神经网络的代码缺陷检测方法无法分析缺陷特征并输出相关评审建议的问题,提出一种基于大感知域LSTM-Seq2Seq模型的代码缺陷检测方法。首先,使用长短期记忆网络(LSTM,long short-term memory)学习缺陷代码的编码特征,建立缺陷判别模型。其次,针对模型与数据集不匹配的问题,向序列到序列模型(Seq2Seq,sequence to sequence)引入代码段长度系数,提升模型对代码评审任务的适用度;通过建立代码缺陷特征与评审建议特征间的映射关系建立了代码分析模型,实现评审输出功能。最后,利用公开数据集SARD对该方法进行了验证,该方法在准确率、召回率、F1值方面的测试结果分别为92.50%、87.20%、87.60%,典型代码缺陷输出的评审文本与专家评审的文本相似度为85.99%,可有效减少评审过程对专家经验的依赖。
