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3D打印技术辅助前交叉韧带重建治疗前交叉韧带断裂的研究

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中国疗养医学 2025年第1期34卷 109-112页

作者：王社光洛阳市孟津区中医院骨伤科河南洛阳471100

目的探讨关节镜下前交叉韧带(ACL)重建术治疗ACL断裂使用3D打印技术的辅助效果。方法选择2021年1月至2023年12月洛阳市孟津区中医院收治的102例ACL断裂患者,按照随机数字表分为3D打印组(n=51)和对照组(n=51)。对照组患者实施常规关节镜... 详细信息

目的探讨关节镜下前交叉韧带(ACL)重建术治疗ACL断裂使用3D打印技术的辅助效果。方法选择2021年1月至2023年12月洛阳市孟津区中医院收治的102例ACL断裂患者,按照随机数字表分为3D打印组(n=51)和对照组(n=51)。对照组患者实施常规关节镜下ACL重建术治疗,3D打印组行关节镜下3D打印技术辅助ACL重建术治疗。对比围术期指标、膝关节功能[国际膝关节主观功能评分(IKDC)、膝关节Lysholms评分]、膝关节活动范围、并发症。结果比较两组股骨骨隧道长度、住院时间,差异无统计学意义(P>0.05);相比于对照组,3D打印组手术时间短,差异有统计学意义(P<0.05);两组术后Lysholms评分、IKDC评分均高于术前,而3D打印组IKDC评分为(96.32±7.26)分、Lysholms评分为(94.25±3.85)分,高于对照组的(82.66±6.54)分、(88.20±8.25)分,差异有统计学意义(P<0.05);术后两组膝关节活动度均高于术前,而3D打印组膝关节活动度为(119.25±7.66)°,高于对照组的(98.66±8.22)°,差异有统计学意义(P<0.05);两组术后均无移植物断裂、移植物撞击、感染、深静脉血栓等并发症发生。结论关节镜下3D打印技术辅助ACL重建术治疗ACL断裂可缩短手术用时,改善患者膝关节活动度、膝关节功能,缩短住院时间,安全性较高。

关键词：前交叉韧带断裂关节镜前交叉韧带重建术 3D打印技术膝关节功能

Analysis on Band Gaps of MCM-41 Type of Materials

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Chemical Research in Chinese Universities 2004年第1期20卷 108-110页

作者： HANPei-de LIANGjian XUBing-she LIUXu-guang PENGLian-mao CollegeofMaterialsScienceandEngineering TaiyuanUniversityofTechnologyTaiyuan030024P.R.China BeifingLaboratoryofElectronMicroscopy InstituteofPhysicsChineseAcademyofSciencesBeijing100080P.R.China

The concept and analysis method of photonic crystals and band gaps are introduced into one-dimensional(1D) ordered mesoporous materials. MCM-41 type of materials are treated theoretically as photonic crystals. The formation of band gaps is exhibited and confirmed by a calculation of transfer matrix technique. PBG was found around 9-42 nm in soft X-ray region. The photonic band-gap was predicted to be dependent on incident direction, pore size and lattice constant. The mesoporous materials with different pore sizes and different lattice constants have different band-gap widths.

关键词： Mesoporous material Photonic crystal Photonic band-gap

Adaptive Equivalent-input-disturbance Approach to Improving Disturbance-rejection Performance

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International Journal of Automation and computing 2020年第5期17卷 701-712页

作者： Ze-Wen Wang Jin-Hua she guang-Jun Wang School of Automation China University of GeosciencesWuhan 430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan 430074China School of Engineering Tokyo University of TechnologyHachioji 192-0982Japan

This paper presents an adaptive equivalent-input-disturbance(AEID)approach that contains a new adjustable gain to improve disturbance-rejection performance.A linear matrix inequality is derived to design the parameters of a control *** adaptive law for the adjustable gain is presented based on the combination of the root locus method and Lyapunov stability theory to guarantee the stability of the AEID-based *** adjustable gain is limited in an allowable range and the information for adjusting is obtained from the state of the *** results show that the method is effective and robust.A comparison with the conventional EID approach demonstrates the validity and superiority of the method.

关键词： Adaptive control disturbance rejection equivalent input disturbance(EID) linear matrix inequality(LMI) Lyapunov stability root locus

Jensen’s Inequality Under Nonlinear Expectation Generated by BSDE with Jumps

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Acta Mathematicae Applicatae Sinica 2019年第4期35卷 873-884页

作者： Na ZHANG guang-yan jia School of Science Tianjin University of Technology Tianjin 300384 China Zhongtai Securities Institute for Financial Studies Shandong University Jinan 250100 China

In this paper, we study Jensen’s inequality under f-expectation, which is a nonlinear expectation generated by backward stochastic differential equations(BSDEs) with jumps. We connect f-convex functions with the viscosity solutions of a kind of integral partial differential equations(IPDEs) with non-local *** find that under Lipschitz condition, the f-convex function is still convex in the usual sense, i.e., the jumps shrink the range of ‘convex’ functions.

关键词： backward stochastic differential equation with jumps f-convexity Jensen’s inequality

Latest research advances on magnesium and magnesium alloys worldwide

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Journal of Magnesium and Alloys 2020年第1期8卷 1-41页

作者： jiangfeng Song jia she Daolun Chen Fusheng Pan National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of Mechanical Transmissions College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Department of Mechanical and Industrial Engineering Ryerson UniversityTorontoOntario M5B 2K3Canada

In the past two years,significant progresses have been achieved in high-performance cast and wrought magnesium and magnesium alloys,magnesium-based composites,advanced cast technologies,advanced processing technologies,and functional magnesium materials,such as Mg ion batteries,hydrogen storage Mg materials,bio-magnesium alloys,*** contributions to the development of new magnesium alloys and their processing technologies have been made by Chongqing University,Shanghai jiaotong University,Chinese Academy of Sciences,Helmholtz Zentrum Geesthacht,Queensland University,Brunel University,*** review paper is aimed to summarize the latest important advances in cast magnesium alloys,wrought magnesium alloys and functional magnesium materials worldwide in 2018–2019,including both the development of new materials and the innovation of their processing *** on the issues and challenges identified here,some future research directions are suggested,including further development of high-performance magnesium alloys having high strength and superior plasticity together with high corrosion resistance and low cost,and fundamental research on the phase diagram,diffusion,precipitation,etc.,as well as the development of advanced welding and joining technology.

关键词： Cast magnesium alloys Wrought magnesium alloys Functional magnesium materials Cast and processing technologies Corrosion and surface treatment International standard

Development and application of moment method on nanoparticles evolution due to coagulation and deposition

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Journal of Hydrodynamics 2019年第5期31卷 1011-1020页

作者： guang-ping Xu jia-song Wang School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this study,the Taylor-series expansion method of moments is developed to describe the dynamic behaviour of nanoparticles considering both the effects of coagulation and deposition in closed environments,where the two effects have always been studied separately *** with traditional methods of moments,the new method could give more accurate results for solving the general dynamics *** addition,moment equations with respect to coagulation and deposition considering the fractal dimension(Df)of particles are acquired,and the results are compared with experimental data and are more accurate than the simulation results under the assumption of spherical *** new dynamic model could be applied in more real conditions with different microstructures of *** decreasing Dt,the particle number concentration decreases more rapidly,additionally,Df has a relatively greater effect on the agglomeration of smaller particles under the same initial ***,the effect of the initial number concentration on coagulation is also *** results show that a higher initial number concentration or a smaller particle size could have a greater effect of coagulation on the evolution of particles.

关键词： Moment method nanoparticle deposition coagulation fractal dimension

Reduction–melting behaviors of boron-bearing iron concentrate/carbon composite pellets with addition of CaO

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International Journal of Minerals,Metallurgy and Materials 2015年第9期22卷 926-932页

作者： guang Wang Qing-guo Xue Xue-feng she Jing-song Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Although the total amount of boron resources in China is high, the grades of these resources are low. The authors have already proposed a new comprehensive utilization process of boron-bearing iron concentrate based on the iron nugget process. The present work describes a further optimization of the conditions used in the previous study. The effects of CaO on the reduction-melting behavior and properties of the boron-rich slag are presented. CaO improved the reduction of boron-bearing iron concentrate/carbon composite pellets when its content was less than lwt%. Melting separation of the composite pellets became difficult with the CaO content increased. The sulfur content of the iron nugget gradually decreased from 0.16wt% to 0.046wt% as the CaO content of the pellets increased from 1wt% to 5wt%. CaO negatively affected the iron yield and boron extraction efficiency of the boron-rich slag. The mineral phase evolution of the boron-rich slag during the reduction-melting separation of the composite pellets with added CaO was also deduced.

关键词： iron concentrate boron ore reduction composite pellets calcium oxide

Traditional Chinese medicine for prevention and treatment of hepatocellular carcinoma: A focus on epithelial-mesenchymal transition

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Journal of Integrative Medicine 2021年第6期19卷 469-477页

作者： jia-jia Li Qing Liang guang-chun Sun Department of Pharmacy Shanghai Fifth People’s HospitalFudan UniversityShanghai 200240China

Hepatocellular carcinoma(HCC)is one of the most prevalent malignant cancers *** transition(EMT),which endows epithelial cells with mesenchymal properties,plays an important role in the early stages of *** cancer therapies have promising effects,but issues remain,such as high rates of metastasis and drug ***,exploring and evaluating new therapies is an urgent *** Chinese medicines(TCMs)have been acknowledged for their multi-target and coordinated intervention effects against *** evidence indicates that TCM can inhibit the malignancy of cells and the progression of EMT in ***,studies on the effects of TCM on EMT in HCC are *** this review,we summarized recent developments in anti-EMT TCMs and formulae,focusing on their underlying pharmacological mechanisms,to provide a foundation for further research on the exact mechanisms through which TCM affects EMT in HCC.

关键词： Traditional Chinese medicine Chinese medicine formulae Hepatocellular carcinoma Epithelial-mesenchymal transition Metastasis Cancer therapy

A New Representation for Second Order Stochastic Integral-differential Operators and Its Applications

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 59-70页

作者： guang-yan jia Na ZHANG Qilu Securities Institute for Financial Studies Shandong University College of Management and Economics Tianjin University China Center for Social Computing Tianjin University

In this paper, we＇ll prove new representation theorems for a kind of second order stochastic integral- differential operator by stochastic differential equations （SDEs） and backward stochastic differential equatio... 详细信息

关键词： backward stochastic differential equation with jumps representation theorem stochastic integral-differential operator f-expectation