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Transforming Adolescent Smiles:Correcting Skeletal Mandibular Retrusion and Bimaxillary Protrusion with Clear Aligners

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Current Medical Science 2024年第3期44卷 657-666页

作者： Wen-jie FAN Jia-qi ZHANG Jia-qi ZHAN li HU li-li chen Department of Stomatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China School of Stomatology Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Wuhan National High Magnetic Field Center Wuhan430074China The Affiliated lianyungang Hospital of Xuzhou Medical University/The First People’s Hospital of lianyungang Lianyungang222000China The First Affiliated Hospital of Kangda College of Nanjing Medical University/The First People’s Hospital of lianyungang Lianyungang222000China

Maxillary protrusion combined with mandibular retraction is a highly prevalent but extremely complex maxillofacial deformity that can have a serious negative impact on patients’facial aesthetics and mental *** traditional orthodontic treatment strategy often involves extracting 4 first premolars and conventional fixed techniques,combined with mini-implant screws,to retract the anterior teeth and improve facial *** recent years,an invisible orthodontic technique,without brackets,has become increasingly ***,while an invisible aligner has been used in some cases with reasonable results,there remain significant challenges in achieving a perfect *** case report presents an adolescent patient with bimaxillary protrusion and mandibular *** on the characteristics of the invisible aligners and the growth characteristics of the adolescent’s teeth and jawbone,we designed precise three-dimensional tooth movement and corresponding resistance/over-correction for each tooth,while utilizing the patient’s jawbone growth potential to promote rapid development of the mandible,accurately and efficiently correcting bimaxillary protrusion and skeletal mandibular *** patient’s facial aesthetics,especially the lateral morphology,have been greatly improved,and various aesthetic indicators have also shown significant changes,and to the patient’s great benefit,invasive mini-implant screws were not used during the *** case highlights the advantages of using invisible aligners in adolescent maxillary protrusion combined with mandibular retraction ***,comprehensive and accurate design combined with good application of growth potential can also enable invisible orthodontic technology to achieve perfect treatment effects in tooth extractions,providing clinical guidance for orthodontists.

关键词： mandibular retrusion esthetic orthodontic treatment clear aligners growth potential

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百合鳞茎腐烂病菌鉴定及种质资源抗性评价

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南方农业学报 2024年第7期55卷 2148-2160页

作者：陈俊吉杨琬芸卢芳连李雪娴李成丽吴红芝云南农业大学园林园艺学院云南昆明650201

【目的】鉴定云南红河地区百合鳞茎腐烂病病原菌并评价百合种质资源抗性,为百合优质生产及抗性品种选育提供参考依据。【方法】收集引起云南百合鳞茎腐烂病样,进行病原菌分离、培养后,通过光学显微镜观察孢子形态及产孢细胞形态和大小,... 详细信息

【目的】鉴定云南红河地区百合鳞茎腐烂病病原菌并评价百合种质资源抗性,为百合优质生产及抗性品种选育提供参考依据。【方法】收集引起云南百合鳞茎腐烂病样,进行病原菌分离、培养后,通过光学显微镜观察孢子形态及产孢细胞形态和大小,并基于百合鳞茎腐烂病病原菌ITS和TEF-1α序列相似性构建系统发育进化树,鉴定引起红河地区切花百合鳞茎腐烂病的病原种类。以梯伯百合鳞茎和橙影百合叶片为试验材料,筛选最优百合鳞茎腐烂病接种方式;评价156份百合种质对层出镰刀菌(Fusarium proliferatum)的抗性强弱并确定抗性等级。【结果】在云南红河地区切花百合鳞茎腐烂病样中,通过分离、纯化培养后获得15株形态相异的疑似百合鳞茎腐烂病病原菌,其中11号病样致病力最强;光学显微镜下,11号菌株的病原菌小孢子数量多,无镰刀形大孢子。系统发育进化树结果显示,11号菌株与MW015680.1:2-519层出镰刀菌LC13659等同属层出镰刀菌的序列相似性达98%以上,11号菌株分别与*** strain MW016480.1:2-519和*** strain MK414217.1:20-677聚为一支,因此将11号菌株鉴定为层出镰刀菌。使用百合鳞片菌饼有伤接种方法的病情等级最高。156份百合种质对层出镰刀菌的抗性评价结果显示,经鳞片接种后,病情指数(DI)最小的是栽培品种Fredo,为18.33%;以Arbatax、Pretty Woman等为代表的69份百合资源为中抗(MR);其中DI最高的种质是野百合1(保山)和滇百合(丽江),达到96.67%。【结论】导致云南红河地区百合鳞茎腐烂病主要病原菌为层出镰刀菌,鳞片有伤接种是百合抗性鉴定适用的方法,筛选出1份高抗百合层出镰刀菌种质Fredo可作为抗性育种材料。

关键词：百合鳞茎腐烂病层出镰刀菌鉴定方法抗病性

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4例抗核抗体人喉癌上皮细胞核型AC-29患儿的病例分析

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现代免疫学 2024年第1期44卷 51-54页

作者：李晨丽潘伟南京医科大学附属儿童医院检验科南京210008

为探讨人喉癌上皮细胞DNA拓扑异构酶Ⅰ型(AC-29)病例的临床特点,回顾性分析南京医科大学附属儿童医院4例AC-29核型患儿的临床特征。结果显示,2020年1月至2021年12月期间南京医科大学附属儿童医院共检测自身抗体阳性血清样本14213例,其中... 详细信息

为探讨人喉癌上皮细胞DNA拓扑异构酶Ⅰ型(AC-29)病例的临床特点,回顾性分析南京医科大学附属儿童医院4例AC-29核型患儿的临床特征。结果显示,2020年1月至2021年12月期间南京医科大学附属儿童医院共检测自身抗体阳性血清样本14213例,其中4例抗核抗体(间接免疫荧光法)核型为AC-29。AC-29是近年新定义的一类核型,正确识别对疾病早期的诊断有一定提示意义。

关键词：抗核抗体 HEp-2细胞 DNA拓扑异构酶Ⅰ型

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Stable wide-temperature and low volume expansion Al batteries:Integrating few-layer graphene with multifunctional cobalt boride nanocluster as positive electrode

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Nano Research 2020年第2期13卷 419-429页

作者： li-li chen Na li Huifeng Shi Yuefei Zhang Wei-li Song Shuqiang Jiao Haosen chen Daining Fang Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of lightweight Multi-functional Composite Materials and Structures Beijing Institute of TechnologyBeijing 100081China School of Materials Science&Engineering Beijing Institute of TechnologBeijing 100081China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Institute of Microstructure and Property of Advarced Materials Beijing University of TechnologyBejing 100124China State Key Laboratory for Turbulence and Complex Systems College of EngineeringPeking UniversityBeijing 100871China

To achieve stable positive electrode for promoting the overall electrochemical performance of Al batteries(ABs),here novel cobalt boride(CoB)nanoclusters are synthesized to construct composite electrodes with few-layer graphene(FLG).Due to the presence of amorphous channels in the employed CoB nanoclusters,the ABs with FLG/CoB composite positive electrodes exhibit high *** and both mechanical and electrochemical stability in the *** assistance of in situ scanning electron microscopy(SEM),the observation results suggest that the positive electrode of CoB nanoclusters holds almost ignorable volume variation upon electrochemical processes,which substantially alleviates the massive electrode expansion induced by the anion intercalation in the composite positive ***,the composite positive electrodes provide stable reversible energy storage capability within a broadened temperature range(-30-60℃),promising a novel strategy to design advanced ABs positive electrodes with enhanced overall energy storage performance.

关键词： Al batteries positive electrode cobalt boride nanoclusters ionic liquid broad temperature

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Characterization of Phase Transition in Heisenberg Fluids from Density Functional Theory

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Communications in Theoretical Physics 2009年第2期51卷 287-292页

作者： li liang-Sheng li li chen Xiao-Song Institute of Theoretical Physics Chinese Academy of Sciences P.O. Box 2735 Beijing 100190 China

The phase transition of Heisenberg fluid has been investigated with the density functional theory in mean-field approximation （MF）. The matrix of the second derivatives of the grand canonical potential Ω with respect to the particle density fluctuations and the magnetization fluctuations has been investigated and diagonalized. The smallest eigenvalue being 0 signalizes the phase instability and the related eigenvector characterizes this phase transition. We find a Curie line where the order parameter is pure magnetization and a spinodal where the order parameter is a mixture of particle density and magnetization. Along the spinodal, the character of phase instability changes continuously from predominant condensation to predominant ferromagnetic phase transition with the decrease of total density. The spinodal meets the Curie line at the critical endpoint with the reduced density p＊=pσ3=0.224 and the reduced temperature T＊ =kT/ε=1.87 （σ is the diameter of Heisenberg hard sphere and e is the coupling constant）.

关键词： critical phenomena order-disorder magnetic liquid

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Phase Transitions in a Mixture of Hard-Sphere Dipoles and Neutral Hard Spheres

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Communications in Theoretical Physics 2009年第9期52卷 523-526页

作者： li li li liang-Sheng chen Xiao-Song Institute of Theoretical Physics Chinese Academy of Sciences P.O. Box 2735 Beijing 100190 China

Using the reference hypernetted chain （RHNC） integral equation theory and a rigorous stability analysis method, we investigate the phase behavior of a mixture of hard-sphere dipoles and neutral hard spheres based on the correlations of the homogeneous isotropic phase. Lowering the temperature down to the points where the RHNC equations fail to have a solution, several ttuctuations strongly increase. At low densities our results indicate the onset of ／ chain formation, which is similar with the pure DHS system. At high densities, the results indicate the appearance of isotropic-to-ferroelectric transitions （small neutral hard spheres concentrations） and demixing transitions （large neutral hard spheres concentrations）.

关键词： integral equations phase transition dipolar fluids

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Multilayered polyelectrolyte-coated gold nanorods as multifunctional optical contrast agents for cancer cell imaging

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第6期11卷 417-422页

作者： li-li chen li JIANG Ya-lun WANG Jun QIAN Sailing HE Centre for Optical and Electromagnetic Research State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou 310058 China Department of Electromagnetic Engineering School of Electrical Engineering Royal Institute of Technology S-100 44 Stockholm Sweden

We report the application of multilayered polyelectrolyte-coated gold nanorods(GNRs) as multifunctional optical contrast agents for cancer cell *** surface modification of GNRs improves their chemical stability and facilitates them to be taken up by cancer cells through electrostatic *** unique longitudinal surface plasmon resonance property of GNRs makes them suitable as both "scattering contrast agents" and "Raman contrast agents".In our experiments,the staining of GNRs in cells was further confirmed by dark field microscopy and Raman *** experiment results indicated that GNRs have great potential as multifunctional "optical contrast agents" for future in vivo animal imaging.

关键词： Gold nanorods Polyelectrolyte Scattering Raman Cancer cell imaging

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Theoretical Studies on the Iodine-catalyzed Nucleophilic Addition of Acetone with Five-membered Heterocycles

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Chemical Research in Chinese Universities 2008年第4期24卷 520-524页

作者： WANG Yan-hua li li chen Xue-song College of Biology and Environment Engineering Zhejiang Shuren University Hangzhou 310015 P. R. China

The iodine-catalyzed nucleophilic addition reactions of pyrrole, furan, or thiophene with acetone were studied in gas and solvent by the density functional theory at the level of Lanl2DZ^＊. It was seen that the halogen bond between iodine and carbonyl oxygen appeared to have an important catalytic effect on such reactions, and the first iodine molecule maximally diminished the barrier height by 41 kJ/mol, while the second iodine molecule could not improve such reactions largely. It was concluded that the C2-addition was generally more favorable than the C3-addition for the three heterocycles; however, iodine considerably more effectively catalyzed the C3-addition than the C2-addition for pyrrole. It was also revealed by PCM calculation that the iodine-catalyzed nucleophilic additions occurred more easily in solvent than in gas, which explained the experiment performed by Bandgar et al..

关键词： Halogen bond, Catalytic effect Nucleophilic addition Density functional theory

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Key roles of micro-particles in water on occurrence of cavitation-erosion of hydro-machinery

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Chinese Science Bulletin 2008年第10期53卷 1603-1607页

作者： WANG JiaDao chen HaoSheng QIN li li Yongdian chen DaRong State Key Laboratory of Tribology Tsinghua University Beijing 100084 China

It has been believed for about one hundred years that the cavitation directly induces the cavitation erosion. It is proposed in this research that cavitation is only the necessary condition but not the sufficient condition of the cavitation erosion. The experiment performed on the rotary disk cavitation system shows that the micro-particles in the fluid play indispensable roles in the cavitation erosion process, and the generation of the erosion pits on the steel surface is also affected by the particles' size. These cracks and deformations on the sample surface indicate that the erosion is the result of the mechanical behavior. Numerical calculations are also provided to support this mechanism.

关键词：气穴现象侵蚀作用表面粗糙度微粒物

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Effect of Reclamation on the Groundwater-Lake Water Interaction in chen Lake

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Journal of Earth Science 2024年第3期35卷 1083-1086页

作者： Kun Lei Teng Ma liuzhu chen Zhenxing li Yu chen School of Environmental Studies State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan 430078China

0 INTRODUCTION To relieve the short supply of suitable land for residing,cultivating,and commerce,it is accepted to reclaim land from lakes,river estuaries,and coastal regions in many countries(Mancini et al.,2020).The large-scale reclamation activities have an irreversible effect on the mico-geomorphology and hydrodynamic system of seasonally flooded areas(Zhang et al.,2019;Yu et al.,2018).For example,coastal regions reclaimed extended the groundwater flow paths,as well as created groundwater level rise,resulting in water-logging in the reclaimed area(Hu et al.,2008).Similar changes in groundwater flow systems may alter groundwater-lake water interactions,and it can ultimately affect the water cycle in the lake ***,such detailed studies are presently *** addition,natural exchanges between the lake and groundwater systems can be strongly affected by physical hydrological processes(Javadzadeh et al.,2020),chemical properties(Kamtchueng et al.,2015),and bioto behavior(Hancock et al.,2005).

关键词： groundwater coastal logging

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