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中国南方人腭中缝的锥形束CT分期和骨密度比率的特点分析

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上海口腔医学 2018年第2期27卷 190-194页

作者：唐晨耀罗丹刘丝灵李文杰卢燕勤中南大学湘雅口腔医院正畸科湖南长沙410008 长沙卫生职业学院口腔教研室湖南长沙410008

目的:研究中国南方地区不同年龄阶段腭中缝的锥形束CT(CBCT)分期及不同分期下腭中缝骨密度比率的特点,以期为腭开展提供评价依据。方法:从201.—201.年中南大学湘雅口腔医院发育正常的患者中,筛选出符合纳入标准的患者1.3例,年龄4~36岁... 详细信息

目的:研究中国南方地区不同年龄阶段腭中缝的锥形束CT(CBCT)分期及不同分期下腭中缝骨密度比率的特点,以期为腭开展提供评价依据。方法:从201.—201.年中南大学湘雅口腔医院发育正常的患者中,筛选出符合纳入标准的患者1.3例,年龄4~36岁。所得CBCT影像资料采用Angelieri分型法将腭中缝分为A、B、C、D、E期,并用Chad Evans Larson骨密度比率计算方法测量每例患者的CBCT腭中缝骨密度值。采用SPSS 22.0软件包对各年龄腭中缝骨密度比率平均值和不同分期腭中缝骨密度比率的平均值分别行单因素方差分析及LSD检验。结果:不同年龄段同一分期(同为B期或C期或D期)各组的骨密度比率平均值之间无显著差异(P>0.05)。C、D期骨密度比率平均值在1.~1.岁组和1.岁以上组均有显著差异(P0.05)。腭中缝分期处于A与C、A与D、A与E、B与C、B与D、B与E、C与D、C与E之间骨密度比率值有显著差异(P1.岁以下儿童腭中缝分期处于A、B、C期,腭中缝骨密度比率显著低于其他年龄组。腭中缝分期为C期的患者,年龄分布于1.~1.岁,骨密度比率在组内无显著差异,但相比A、B期较大,相比D、E期较小,差异具有显著性(P<0.05)。

关键词：腭中缝分期腭中缝骨密度比率腭开展

一种基于油中溶解气体分析的变压器绝缘故障诊断新方法

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上海交通大学学报 2005年第S1期39卷 82-86页

作者：董立新肖登明吕干云刘奕路上海交通大学电子信息及电气工程学院上海200240 美国弗吉尼亚理工大学电气工程系

将小波神经网络优良的分类诊断能力和最小二乘加权融合方法相结合,采用油气分析实现电力变压器的故障诊断.用非线性Morlet小波基作为神经网络激励函数,形成神经元,结合双方的优点,建立了紧致型小波神经网络.采用6个同一小波,其隐层单元... 详细信息

将小波神经网络优良的分类诊断能力和最小二乘加权融合方法相结合,采用油气分析实现电力变压器的故障诊断.用非线性Morlet小波基作为神经网络激励函数,形成神经元,结合双方的优点,建立了紧致型小波神经网络.采用6个同一小波,其隐层单元数目、学习率等相关训练参数不同的单个子网络,对相同变压器故障信号样本进行训练,用最小二乘加权融合法对各个子网络的输出结果进行决策信息融合,通过对融合结果的分析,得到变压器故障的识别结果.测试结果表明,系统具有较好的分类诊断能力和可靠性.

关键词：变压器故障诊断小波神经网络信息融合

Progress of vegetation modelling and future research prospects

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Science China Earth Sciences 2024年第9期67卷 2718-2738页

作者： Siqi LI Xu ZHANG Zhengyao lu Jian NI Jianhua lu State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China British Antarctic Survey Cambridge CB30ETUnited Kingdom Department of Physical Geography and Ecosystem Science Lund UniversityLund 22362Sweden College of Life Sciences Zhejiang Normal UniversityJinhua 321004China School of Atmospheric Sciences Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China

Terrestrial vegetation is a crucial component of the Earth system,and its changes not only represent one of the most distinct aspects of climate change but also exert significant feedback within the climate system by exchanging energy,moisture,and carbon *** quantitatively and mechanistically study climate-vegetation feedback,numerical vegetation models have been developed on the theory of ecophysiological constraints on plant functional *** models eventually can simulate vegetation distribution and succession across different spatial and temporal scales,and associated terrestrial carbon cycle processes by categorizing vegetation into biomes according different plant functional types and their associated environmental *** we review the developing history of vegetation models and provide recent advances and future *** 21.t century,static vegetation models,as developed statistical models,can only simulate equilibrated characteristics of vegetation *** last several decades,Dynamic Global Vegetation Models(DGVMs)have been developed to simulate instantaneous responses of vegetation to climate change and associated dynamics,and can be coupled with Earth system models to investigate interactions among atmosphere,ocean,and *** are also widely applied to investigate the dynamics accounting for changes in the geographic distribution patterns of land surface vegetation at different spatial and temporal scales and to assess the impacts of terrestrial carbon and water fluxes and land use *** suggest that future vegetation modeling could integrate with machine learning,and explore vegetation transient response and feedback as well as impacts of process hierarchies and human activities on climate and ecosystem.

关键词： Vegetation models DGVMs Ecosystems Plant functional types Plant functional traits

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微通道反应器中制备2-溴噻吩的工艺研究

现代化工 2018年第6期38卷 114-116,118页

作者：申志伟刘烨王静静刘继阳卢建军严曙明太原理工大学煤化工研究所煤科学与技术教育部和山西省重点实验室山西太原030024 山西恒强化工有限公司山西运城043100

利用微通道反应器设计了连续合成2-溴噻吩的新工艺,并分别从反应温度、停留时间、物料配比等方面进行了研究,确定了最佳的工艺合成条件:在n(噻吩)∶n(HBr)∶n(H_2O_2)=1.1.25∶1.375、反应温度为25℃、停留时间为30 s时,噻吩的转化率为... 详细信息

利用微通道反应器设计了连续合成2-溴噻吩的新工艺,并分别从反应温度、停留时间、物料配比等方面进行了研究,确定了最佳的工艺合成条件:在n(噻吩)∶n(HBr)∶n(H_2O_2)=1.1.25∶1.375、反应温度为25℃、停留时间为30 s时,噻吩的转化率为84.3%,选择性为79.9%。与传统间歇釜式工艺相比,微通道反应器工艺的反应时间明显缩短,操作过程安全简便,产品转化率高、选择性好。

关键词：微通道反应器 2-溴噻吩氧化溴化

Designing highly transparent cerium doped Y_(2)O_(3) ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions

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Journal of Advanced Ceramics 2024年第7期13卷 1032-1042页

作者： Cong Zhang Jianqi Qi Xiaolan Zhou Zhonghua lu Tiecheng lu College of Physics Sichuan UniversityChengdu 610064China Key Laboratory of High Energy Density Physics of Ministry of Education Sichuan UniversityChengdu 610064China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan UniversityChengdu 610064China

Ultraviolet(UV)radiation poses risks to both human health and *** response to the urgent demand for UV-shielding across various applications,extensive endeavors have been dedicated to developing UV-shielding materials spanning from wide-bandgap semiconductors to organo-inorganic composite ***,existing UV shielding materials,though suitable for daily use,cannot meet the demands of extreme *** this work,we incorporated CeO_(2)as a UV absorber into Y_(2)O_(3)transparent ceramics for *** effect of CeO_(2)concentration on the optical,mechanical,and thermal properties of Y_(2)O_(3)ceramics was systematically *** findings indicate that CeO_(2)serves not only as a UV absorber but also as an effective sintering aid for Y_(2)O_(3)transparent *** 5 at%Ce-doped Y_(2)O_(3)transparent ceramics exhibit the optimal optical quality,with in-line transmittance of~77%at 800 *** introduction of Ce shifted the UV cutoff edge of Y_(2)O_(3)transparent ceramics from 250 to 375 nm,which was attributed to the visible band absorption of Ce^(4+).This shift grants UV shielding capabilities to Y_(2)O_(3)transparent ceramics,resulting in 1.0%shielding for ultraviolet C(UVC,1.0-280 nm)and ultraviolet B(UVB,280-320 nm)and~95%shielding for ultraviolet A(UVA,320-400 nm).The service stability(optical properties)under various corrosive conditions(acid,alkali,UV irradiation,and high temperature)was investigated,confirming the excellent stability of this transparent ceramic UV-shielding material.A comparison of the performance parameters of transparent ceramics with those of traditional UV shielding materials such as glasses,films,and coatings was *** work provides innovative design concepts and an effective solution for UVshielding materials for extreme conditions.

关键词： ultraviolet(UV)-shielding transparent ceramics bandgap engineering thermal properties optical properties

Self-assembled all-oxides three-phase vertically aligned nanocomposite thin film with multifunctionality

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Nano Research 2024年第9期17卷 8226-8232页

作者： Jijie Huang Yuan Fang Ping lu Juanjuan lu Haiyan Wang School of Materials Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China School of Materials Engineering Purdue UniversityWest LafayetteIN 47907USA Sandia National Laboratories AlbuquerqueNew Mexico 87185USA School of Electrical and Computer Engineering Purdue UniversityWest LafayetteIN 47907USA

Multi-phase vertically aligned nanocomposite(MP-VAN)thin films represent a promising avenue for achieving complex multifunctionality,exploring novel interfacial phenomena,and enabling complex metamaterial designs and *** this study,a novel self-assembled all-oxides three-phase VAN system was conceptualized and fabricated utilizing pulsed laser deposition(PLD)with a single composite *** microstructural analysis reveals the presence of three distinct phases:LiNbO_(3),CeO_(2-x),and LiNbCe_(1.x)O_(y)within the MP-VAN ***,ferroelectric,dielectric,optical anisotropy,and magnetic properties were systematically investigated to showcase the multifunctionality inherent in these *** work presents a pioneering approach to designing and realizing MP-VAN systems,and opens up opportunities for tailoring the complex three-dimensional(3D)physical properties and property coupling of VAN films towards diverse device applications.

关键词： thin film three-phase vertically aligned nanocomposite multifunctionality ferroelectricity optical anisotropy

Matlab在光学信息处理仿真实验中的应用

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物理实验 2004年第6期24卷 23-25,28页

作者：谢嘉宁陈伟成赵建林陈国杰张潞英佛山科学技术学院物理系广东佛山528000 西北工业大学应用物理系陕西西安710072

提出了一种利用计算机并通过Matlab软件仿真光学信息处理实验的方法 ,其特点是可以随意改变物理参量 ,克服了光学实验上难以实现的操作 .文中分别给出了光栅衍射、空间滤波、图像边缘增强、相关识别等实验的部分仿真结果 .

关键词： Matlab计算机仿真 CAI

Improving Optimal Fingerprinting Methods Requires a Viewpoint beyond Statistical Science

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Advances in Atmospheric Sciences 2024年第10期41卷 1869-1872页

作者： Jianhua lu School of Atmospheric Sciences Sun Yat-sen University(SYSU)&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China

While being successful in the detection and attribution of climate change,the optimal fingerprinting method(OFM)may have some limitations from a physics-and-dynamics-based ***,an analysis is made on the linearity,noninteraction,and stationary-variability assumptions adopted by *** is suggested that furthering OFM needs a viewpoint beyond statistical science,and the method should be combined with theoretical tools in the dynamics and physics of the Earth system,so as to be applied for the detection and attribution of nonlinear climate change including tipping elements within the Earth system.

关键词： optimal fingerprinting detection and attribution nonlinearity interaction between climate change and variability non-stationary climate variability

子宫内膜异位症在位内膜及裸鼠模型异位病灶芳香化酶的表达及意义

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生殖与避孕 2005年第11期25卷 649-654页

作者：王丹波任凤岩张淑兰李一宁牛惠彦陆景明中国医科大学附属第二医院妇产科沈阳110004 哈尔滨医科大学附属第五医院妇产科大庆163318

目的:探讨芳香化酶在子宫内膜异位症(EMs)在位内膜及其裸鼠模型异位病灶中的表达意义。方法:征集EMs组及非异位症(NEMs)组各24例,应用其分泌晚期子宫内膜,建立EMs裸鼠模型,取建模后5d、1.d、30d裸鼠异位病灶,RT-PCR及免疫组化方法检测... 详细信息

目的:探讨芳香化酶在子宫内膜异位症(EMs)在位内膜及其裸鼠模型异位病灶中的表达意义。方法:征集EMs组及非异位症(NEMs)组各24例,应用其分泌晚期子宫内膜,建立EMs裸鼠模型,取建模后5d、1.d、30d裸鼠异位病灶,RT-PCR及免疫组化方法检测两组在位内膜和异位病灶芳香化酶mRNA及蛋白表达。结果:芳香化酶mRNA表达,EMs组异位病灶(0.894±0.23)表达强于在位内膜(0.685±0.1.),P1.±0.1.,62.50%),P1.d:0.990±0.1.;30d:0.880±0.29;NEMs组,5d:0.889±0.23;1.d:0.905±0.23;30d:0.91.±0.22)比较,芳香化酶mRNA表达无差异。芳香化酶蛋白阳性表达率,EMs组异位病灶(95.83%)与在位内膜(91.67%)比较,差异不显著。NEMs组异位病灶(95.83%)高于在位内膜(70.83%),P<0.05。EMs组在位内膜高于NEMs组,P<0.05;两组异位病灶比较,差异不显著。结论:局部雌激素合成增强在EMs发病机理中起重要作用。芳香化酶是EMs等雌激素依赖性疾病在子宫内膜特异性表达标记物。

关键词：子宫内膜异位症裸小鼠芳香化酶在位内膜异位病灶