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Expert consensus on difficulty assessment of endodontic therapy

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International Journal of Oral Science 2024年第1期16卷 15-25页

作者： Dingming Huang Xiaoyan Wang Jingping Liang Junqi Ling Zhuan Bian Qing Yu Benxiang Hou Xinmei Chen Jiyao Li Ling Ye Lei Cheng Xin xu Tao Hu Hongkun Wu Bin Guo Qin Su Zhi Chen Lihong Qiu Wenxia Chen Xi Wei zhengwei Huang Jinhua Yu Zhengmei Lin Qi Zhang Deqin Yang Jin Zhao Shuang Pan Jian Yang Jiayuan Wu Yihuai Pan Xiaoli Xie Shuli Deng Xiaojing Huang Lan Zhang Lin Yue xuedong Zhou State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Operative Dentistry and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina Department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghuaSchool of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina The State Key Laboratory Breeding Base of Basic Science of Stomatology(Hubei-MOST)&Key Laboratory of Oral Biomedicine Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhanChina Department of Operative Dentistry&Endodontics School of StomatologyThe Fourth Military Medical UniversityXi’anChina Department of Endodontics Beijing Stomatological HospitalSchool of StomatologyCapital Medical UniversityBeijingChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Preventive Dentistry West China Hospital of StomatologySichuan UniversityChengduChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Geriatric dentistry West China Hospital of Stomatology

Endodontic diseases are a kind of chronic infectious oral disease. Common endodontic treatment concepts are based on the removal of inflamed or necrotic pulp tissue and the replacement by gutta-percha. However, it is very essential for endodontic treatment to debride the root canal system and prevent the root canal system from bacterial reinfection after root canal therapy(RCT). Recent research, encompassing bacterial etiology and advanced imaging techniques, contributes to our understanding of the root canal system’s anatomy intricacies and the technique sensitivity of RCT. Success in RCT hinges on factors like patients, infection severity, root canal anatomy, and treatment techniques. Therefore, improving disease management is a key issue to combat endodontic diseases and cure periapical lesions. The clinical difficulty assessment system of RCT is established based on patient conditions, tooth conditions, root canal configuration, and root canal needing retreatment, and emphasizes pre-treatment risk assessment for optimal outcomes. The findings suggest that the presence of risk factors may correlate with the challenge of achieving the high standard required for RCT. These insights contribute not only to improve education but also aid practitioners in treatment planning and referral decision-making within the field of endodontics.

关键词： anatomy difficulty treatment

基于非线性最小二乘的Arrhenius方程参数估计

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数值计算与计算机应用 2019年第4期40卷 279-290页

作者：徐正伟王皓胡兵张世全四川大学数学学院

本文针对利用Arrhenius方程刻画的隔离层腐蚀问题,研究如何利用实验数据得到刻画其机理的腐蚀模型参数的反问题.我们设计恰当的初值猜测方法、釆用四阶Runge-Kutta格式求解微分方程,并利用Gauss-Newton方法得到了与实验数据匹配的模型参... 详细信息

本文针对利用Arrhenius方程刻画的隔离层腐蚀问题,研究如何利用实验数据得到刻画其机理的腐蚀模型参数的反问题.我们设计恰当的初值猜测方法、釆用四阶Runge-Kutta格式求解微分方程,并利用Gauss-Newton方法得到了与实验数据匹配的模型参数.数值实验表明,我们的方法能够得到满足实际精度要求的模型参数,即根据估计参数得到的最终计算反应量和实验数据能够在误差范围内匹配.

关键词：参数估计非线性最小二乘反问题

3D打印辅助经后路椎弓根钉棒内固定对强直性脊柱炎并胸腰椎骨折患者手术应激及腰椎功能的影响

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临床医学研究与实践 2023年第33期8卷 47-50页

作者：马验刘立峰许正伟铜川市人民医院陕西铜川727100 西安市红会医院陕西西安710054

目的探讨3D打印辅助经后路椎弓根钉棒内固定对强直性脊柱炎(AS)并胸腰椎骨折患者手术应激及腰椎功能的影响。方法选取2018年1月至2022年1月收治的72例AS并胸腰椎骨折患者为研究对象,根据随机数表法将其分为对照组(36例,经后路椎弓根钉... 详细信息

目的探讨3D打印辅助经后路椎弓根钉棒内固定对强直性脊柱炎(AS)并胸腰椎骨折患者手术应激及腰椎功能的影响。方法选取2018年1月至2022年1月收治的72例AS并胸腰椎骨折患者为研究对象,根据随机数表法将其分为对照组(36例,经后路椎弓根钉棒内固定治疗)与观察组(36例,3D打印辅助经后路椎弓根钉棒内固定治疗)。比较两组的治疗效果。结果观察组的临床疗效优良率高于对照组(P<0.05)。观察组的手术时间短于对照组,术中出血量、术后引流量少于对照组(P<0.05)。术后1 d,两组的皮质醇(Cor)、去甲肾上腺素(NE)水平均显著升高,但观察组低于对照组(P<0.05)。术后1、3个月,两组的伤椎前缘高度比均高于术前,矢状位Cobb角均小于术前,且观察组优于对照组(P<0.05)。术后1、3个月,两组的视觉模拟评分法(VAS)、Oswestry功能障碍指数(ODI)评分均低于术前,且观察组低于对照组(P<0.05)。结论3D打印辅助经后路椎弓根钉棒内固定可缩短AS并胸腰椎骨折患者的手术时间,减少术中出血量、术后引流量,减轻手术应激反应及疼痛程度,改善伤椎前缘高度比、矢状位Cobb角,进而恢复患者的腰椎功能。

关键词： 3D打印技术经后路椎弓根钉棒内固定强直性脊椎炎胸腰椎骨折

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湿陷性黄土区桥梁桩基承载力浸水试验研究

铁道建筑 2017年第10期57卷 40-43页

作者：徐正伟吴亚平舒春生余小龙高海平兰州交通大学土木工程学院甘肃兰州730070 甘肃省交通规划勘察设计研究院有限责任公司甘肃兰州730070

依托兰州南绕城高速公路建设项目在湿陷性黄土区进行了大型现场浸水试验,在天然和浸水2种工况下,研究连续浸水对湿陷性黄土区桥梁桩基承载力的影响。研究结果表明:以年降雨量为注水量,连续浸水后加载桩基的承载力只有天然状态下的60%,... 详细信息

依托兰州南绕城高速公路建设项目在湿陷性黄土区进行了大型现场浸水试验,在天然和浸水2种工况下,研究连续浸水对湿陷性黄土区桥梁桩基承载力的影响。研究结果表明:以年降雨量为注水量,连续浸水后加载桩基的承载力只有天然状态下的60%,桩基承载力降低是由于黄土抗剪强度降低使桩侧的摩阻力降低;浸水前后桩基的不可恢复变形由44.1%增至91.55%,变形基本不能恢复;恒载浸水状态下桩基沉降量是浸水前加载状态下的5.3倍;浸水后土体材料性质改变,浸水的影响远大于正常工作荷载。

关键词：湿陷性黄土连续浸水现场浸水试验桩基承载力

催化不对称合成手性氧化吲哚螺五元环衍生物的研究进展

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现代盐化工 2022年第5期49卷 1-3页

作者：黄磊徐佳琦许正伟李浩何燕吴琼徐州工程学院江苏徐州221018

手性氧化吲哚螺五元环衍生物广泛存在于天然产物及药物分子中,在医药领域应用广泛。因此,高对映选择性地实现手性氧化吲哚螺五元环骨架的构建是有机化学领域的研究热点之一。综述了近年来通过催化不对称合成策略构建手性氧化吲哚螺五元... 详细信息

手性氧化吲哚螺五元环衍生物广泛存在于天然产物及药物分子中,在医药领域应用广泛。因此,高对映选择性地实现手性氧化吲哚螺五元环骨架的构建是有机化学领域的研究热点之一。综述了近年来通过催化不对称合成策略构建手性氧化吲哚螺五元杂环骨架的研究进展,希望能为相关领域的研究工作者提供有价值的参考。

关键词：手性氧化吲哚螺环五元环催化不对称

Surface glycosylation of polymeric membranes

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Science China Chemistry 2008年第10期51卷 901-910页

作者： DAI zhengwei WAN LingShu xu ZhiKang Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Institute of Polymer ScienceZhejiang UniversityHangzhou 310027China

Surface glycosylation of polymeric membranes has been inspired by the structure of natural biomem-branes. It refers to that glycosyl groups are introduced onto the membrane surface by various strate-gies, which combine the separation function of the membrane with the biological function of the sac-charides in one system. In this review, progress in the surface glycosylation of polymeric membranes is highlighted in two aspects, i.e. the glycosylation methods and the potential applications of the sur-face-glycosylated membranes.

关键词： membrane surface glycosylation enzyme immobilization protein recognition

基于cosSTR-YOLOv7的多尺度遥感小目标检测

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电光与控制 2024年第4期31卷 28-34页

作者：张徐朱正为郭玉英刘辉仲慧西南科技大学四川绵阳621000 特殊环境机器人技术四川省重点实验室四川绵阳621000

针对地理空间遥感图像存在目标分布密集、尺度变化范围较大及小目标特征信息过少等而造成目标检测精度不高的问题,提出了一种基于Swin Transformer(STR)和YOLOv7的多尺度遥感小目标检测算法cosSTR-YOLOv7。以YOLOv7作为基线网络,首先,使... 详细信息

针对地理空间遥感图像存在目标分布密集、尺度变化范围较大及小目标特征信息过少等而造成目标检测精度不高的问题,提出了一种基于Swin Transformer(STR)和YOLOv7的多尺度遥感小目标检测算法cosSTR-YOLOv7。以YOLOv7作为基线网络,首先,使用STR模块替换主干网络中的E-ELAN模块,并利用余弦注意力机制和后正则化方法将其改进为cosSTR模块,以提升模型训练的稳定性;其次,在Neck部分构建新的特征融合层,以减少特征信息丢失;然后,在预测部分增加小目标预测层,以提升模型对小目标的检测能力;最后,采用新的SIoU损失函数计算定位损失,以加快模型收敛速度。利用遥感数据集DIOR进行实验,实验结果表明,所提算法平均精度均值(mAP)达到92.63%,对比原YOLOv7算法提高了3.73个百分点,对多尺度小目标的检测性能有显著提高。

关键词：遥感图像小目标检测多尺度特征 YOLOv7 Swin Transformer

维普期刊数据库博看期刊

Refill friction stir spot welding of 5083-O aluminum alloy

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Journal of Materials Science & Technology 2018年第5期34卷 878-885页

作者： Zhiwu xu zhengwei Li Shude Ji Liguo Zhang State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Faculty of Aerospace Engineering Shenyang Aerospace University

In this work,refill friction stir spot welding（RFSSW） was used to weld 2 mm-thick 5083-O *** Box–Behnken experimental design was used to investigate the effect of welding parameters on the joint lap shear *** showed that a surface indentation of 0.3 mm effectively eliminated the welding *** of the stir zone（SZ） was higher than that of the base material（BM） and the hardness decreased with increasing the heat input during *** optimum failure load of 7.72 k N was obtained when using rotating speed of 2300 rpm,plunge depth of 2.4 mm and refilling time of 3.5 *** fracture modes were obtained during the lap shear test and all were affected by the hook defect.

关键词： Refill friction stir spot welding Keyhole Secondary phases Microhardness Lap shear failure load

生根剂对橡胶树组培苗移栽成活率和根系生长的影响

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热带农业科学 2019年第10期39卷 1-6页

作者：成镜顾晓川徐正伟华玉伟中国热带农业科学院橡胶研究所/农业农村部橡胶树生物学与遗传资源利用重点实验室/省部共建国家重点实验室培育基地—海南省热带作物栽培生理学重点实验室/热带林木种子种苗工程中心

以‘热研7-33-97’橡胶树组培苗为试验材料,采用随机区组试验方法,研究生根剂种类、浓度和处理方式对橡胶树组培苗移栽成活率和根系生长的影响。结果表明,国光生根剂比生根壮苗提苗灵的效果好。浸根条件下,国光生根剂稀释倍数为14000倍... 详细信息

以‘热研7-33-97’橡胶树组培苗为试验材料,采用随机区组试验方法,研究生根剂种类、浓度和处理方式对橡胶树组培苗移栽成活率和根系生长的影响。结果表明,国光生根剂比生根壮苗提苗灵的效果好。浸根条件下,国光生根剂稀释倍数为14000倍时,组培苗的移栽成活率最高,达82.2%,比清水浸根处理高14.4%。移栽后25 d,组培苗的抽芽率可以达到72.2%,比清水浸根和清水淋根处理分别高7.8%和3.3%,缩短了育苗时间7 d左右。浸根条件下,国光生根剂稀释倍数为14000倍时,根系生长指标均优于生根壮苗提苗灵。

关键词：橡胶树组培苗生根剂移栽成活率根系形态