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Rare pattern of Maisonneuve fracture:A case report

World Journal of Clinical Cases 2022年第14期10卷 4684-4690页

作者： Bin Zhao Nan Li Hong-Bin Cao Gui-Xin Wang jin-quan he Department of Foot and Ankle SurgeryⅠ Tianjin HospitalTianjin 300211China

BACKGROUND Maisonneuve fracture is a special type of ankle fracture that consists of proximal fibular fracture,a lesion of the inferior tibiofibular syndesmotic complex(interosseous ligament,anterior inferior tibiofibular ligament and posterior inferior tibiofibular ligament),and injury of the medial structure of the ankle(deltoid ligament tear or medial malleolar fracture).The accepted mechanism of Maisonneuve fracture is pronation external rotation according to the Lauge-Hansen *** this paper,we report a rare pattern of Maisonneuve fracture,which has the characteristics of both pronation external rotation ankle fracture and supination adduction ankle *** SUMMARY A 31-year-old female patient accidentally sprained her right ankle while walking 5 d before hospitalization in our *** patient was initially missed in other hospitals and later rediagnosed in our outpatient ***-length radiographs of the lower leg revealed proximal fibula fracture,inferior tibiofibular joint separation,and medial malleolar fracture involving the posterior malleolus,which was also revealed on computed tomography *** resonance imaging revealed rupture of the anterior inferior tibiofibular ligament and anterior talofibular *** diagnosed a rare pattern of Maisonneuve fracture with proximal fibular fracture,inferior tibiofibular joint separation,medial malleolar fracture and ruptures of the anterior inferior tibiofibular ligament and anterior talofibular *** patient underwent open reduction and internal fixation in our hospital.A 6-mo postoperative follow-up confirmed a good clinical *** To our knowledge,this rare pattern of Maisonneuve fracture has not been previously *** possible mechanism of injury is supination adduction combined with pronation external *** analysis of the injury mechanism of Maisonneuve fracture is of great clinical significance and can better guide clinical treatm

关键词： Ankle fracture Maisonneuve fracture Mechanism analysis Pronation external rotation Supination adduction Case report

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Bending Stiffness of Concrete-Filled Steel Tube and Its Influence on Concrete Placement Timing of Composite Beam-String Structure

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Structural Durability & health Monitoring 2025年第1期19卷 55-75页

作者： Zhenyu Zhang quan jin Haitao Zhang Zhao Liu Yuyang Wu Longfei Zhang Renzhang Yan CCCC Third Highway Engineering Co. Ltd.Beijing101300China School of Civil Engineering Chongqing Jiaotong UniversityChongqing400074China

When the upper chord beam of the beam-string structure(BSS)is made of concrete-filled steel tube(CFST),its overall stiffness will change greatly with the construction of concrete placement,which will have an impact on the design of the tensioning plans and selection of control measures for the *** order to accurately obtain the bending stiffness of CFST beam and clarify its impact on the mechanical properties of composite BSS during construction,the influence of some factors such as height-width ratio,wall thickness of steel tube,elasticity modulus of concrete,and friction coefficient on the bending stiffness are analyzed parametrically by the numerical simulation technology based on an actual *** calculation formula of the equivalent bending stiffness of CFST is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the construction and use stages of the composite BSS,respectively,and the mechanical properties such as prestress-tensioning control value,structural deformation,and internal force of key members are comparatively analyzed when adopting two different construction ***,the optimal construction plan of concrete placement first and then prestress-tensioning is proposed.

关键词： Concrete panels freeze-thaw damage compression-shear crack tension-shear crack

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甘肃兰州市区城镇居民体成分分析

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解剖学报 2017年第5期48卷 600-604页

作者：何进全何烨张红东汪玉堂马斌白静雅樊洁海向军西北民族大学医学院解剖学教研室兰州730030 兰州市残疾人托养就业康复中心兰州730050

目的分析甘肃兰州市区城镇成人居民体成分和脂肪分布随年龄变化的特点及发展趋势,为改善居民的身体状况提供理论依据。方法采用生物电阻抗法(日本产MC-180型人体成分分析仪)对1357名男女居民进行测试,对测试结果进行统计学分析。结果 20... 详细信息

目的分析甘肃兰州市区城镇成人居民体成分和脂肪分布随年龄变化的特点及发展趋势,为改善居民的身体状况提供理论依据。方法采用生物电阻抗法(日本产MC-180型人体成分分析仪)对1357名男女居民进行测试,对测试结果进行统计学分析。结果 20~79岁年龄段男女性居民体脂率、腰臀比(WHR)随年龄的增长而递增。蛋白质总量、肌肉总量、推定骨量、身体水分、身体质量指数(BMI)值随年龄的增长呈先升后降的趋势。内脏脂肪男、女性均随年龄的增长而增长,皮下脂肪男性随年龄的增长呈先升后降的趋势,女性则随年龄的递增而递增。结论男性居民在20~岁年龄段后、女性在40~岁年龄段后出现了腹内型肥胖,男性在30~岁年龄段后,女性在60~岁年龄段后出现超重,超出了警戒范围。

关键词：身体成分体脂肪率蛋白质身体质量指数腰臀比生物电阻抗法人

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Uncertain information fusion with robust adaptive neural networks-fuzzy reasoning

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Journal of Systems Engineering and Electronics 2006年第3期17卷 495-501页

作者： Zhang Yinan Sun Qingwei quan he jin Yonggao quan Taifan Dept. of Electronics and Communication Engineering Harbin Inst. of Technology Harbin 150001 P. R. China Mobile Communications Corporation of China Harbin 150001 P. R. China Dept. of Electronics and Information Engineering of Yanbian Univ. Yanbian 617100 P. R. China

In practical multi-sensor information fusion systems, there exists uncertainty about the network structure, active state of sensors, and information itself （including fuzziness, randomness, incompleteness as well as roughness, etc）. hence it requires investigating the problem of uncertain information fusion. Robust learning algorithm which adapts to complex environment and the fuzzy inference algorithm which disposes fuzzy information are explored to solve the problem. Based on the fusion technology of neural networks and fuzzy inference algorithm, a multi-sensor uncertain information fusion system is modeled. Also RANFIS learning algorithm and fusing weight synthesized inference algorithm are developed from the ANFIS algorithm according to the concept of robust neural networks. This fusion system mainly consists of RANFIS confidence estimator, fusing weight synthesized inference knowledge base and weighted fusion section. The simulation result demonstrates that the proposed fusion model and algorithm have the capability of uncertain information fusion, thus is obviously advantageous compared with the conventional Kalman weighted fusion algorithm.

关键词： uncertain information information fusion neural networks fuzzy inference robust estimate.

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Synthesis and Crystal Structure of (Bu_4N)_2Hg(i-mnt)_2

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Chinese Chemical Letters 2001年第2期12卷 185-186页

作者： he Gen ZheNG Qiong Hua jin Xin quan XIN State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210093 Department of Chemistry Capital Normal UniversityBeijing 100037

The synthesis and the crystal structure of the title compound (Bu4N)(2)Hg(S2C=C(CN)(2))(2) 1 is reported herein. The crystal is attributed to trielinic system and space group P-1, fw=965.88. The crystal lattice parameters are a=9.45(1), b=15.827(2), c=17.619(2)Angstrom, alpha =108.12(2), beta =99.54(2), gamma =97.60(2)degrees, V=2421.9(8)Angstrom, mu (MoKalpha)=3.390mm(-1), Z=2, D-c=***(-3), F(000)=996, R=0.054, wR=0.058.

关键词： synthesis crystal structure mercury(II) complex isomaleonitrile dithiolate

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Recent advances in Raman spectroelectrochemistry on single-crystal surfaces

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Science China Chemistry 2023年第12期66卷 3360-3371页

作者： quan-Feng he Jia Yu jin-Chao Dong Jian-Feng Li State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringCollege of EnergyiChEMXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesCAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesUniversity of Chinese Academy of SciencesBeijing 100190China

Benefiting from a principally contaminant-free and well-defined surface,single-crystal electrodes offer new insights into interfacial processes and are important in *** early impetus for using single-crystal electrodes in electrocatalysis was to investigate the surface structure at the atomic level for the reactions that are sensitive to the *** studies were usually performed in an ultra-high vacuum with atomic force microscopy(AFM),scanning tunneling microscope(STM),and X-ray methods to avoid the ***,such characterizations are limited in their ability to identify chemical species definitively,a limitation that has similarly plagued the study of *** advances in shellisolated nanoparticle-enhanced Raman spectroscopy(SHINERS)have enabled the detection of reaction intermediates on singlecrystal electrodes,in which shell-isolated nanoparticles on the single-crystal electrode can enhance the Raman signal from the surface,without changing the surface structure and electrochemical ***,this work aims to review recent advances in Raman spectroelectrochemical studies on single-crystal electrode *** discussion focuses on how SHINERS technology has enabled the effective detection of intermediate species and,when combined with the electrochemical method,has yielded novel insights into the dynamic evolution of surface structure and electrocatalytic reaction ***,the challenges and future of single-crystal electrodes are introduced.

关键词： single-crystal electrode shell-isolated nanoparticle-enhanced Raman spectroscopy interfacial structures adsorption

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Dimethyl carbonate synthesis via transesterification catalyzed by quaternary ammonium salt functionalized chitosan

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Chinese Chemical Letters 2008年第3期19卷 286-290页

作者： Yuan Zhao Liang Nian he Yuan Yi Zhuang jin quan Wang State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China College of Environmental Science and Engineering Nankai University Tianjin 300071 China

A quaternary ammonium salt covalently linked to chitosan was first used as a catalyst for dimethyl carbonate （DMC） synthesis by the transesterification of propylene carbonate （PC） with methanol. The effects of various reaction variables like reaction time, temperature and pressure on the catalytic performance were also investigated. 54% DMC yield and 71% PC conversion were obtained under the optimal reaction conditions. Notably, the catalyst was able to be reused with retention of high catalytic activity and selectivity. Consequently, the process presented here has great potential for industrial application due to its advantages such as stability, easy preparation from renewable biopolymer, and simple separation from products.

关键词： Chitosan Quaternary ammonium salt Transesterification Dimethyl carbonate

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Proportional directional valve based automatic steering system for tractors

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Frontiers of Information Technology & Electronic Engineering 2016年第5期17卷 458-464页

作者： jin-yi LIU jing-quan TAN En-rong MAO Zheng-he SONG Zhong-xiang ZHU Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment China Agricultural University

Most automatic steering systems for large tractors are designed with hydraulic systems that run on either constant flow or constant pressure. Such designs are limited in adaptability and applicability. Moreover, their control valves can unload in the neutral position and eventually lead to serious hydraulic leakage over long operation periods. In response to the problems noted above, a multifunctional automatic hydraulic steering circuit is presented. The system design is composed of a 5-way-3-position proportional directional valve, two pilot-controlled check valves, a pressure-compensated directional valve, a pressurecompensated flow regulator valve, a load shuttle valve, and a check valve, among other components. It is adaptable to most open-center systems with constant flow supply and closed-center systems with load feedback. The design maintains the lowest pressure under load feedback and stays at the neutral position during unloading, thus meeting the requirements for steering. The steering controller is based on proportional-integral-derivative(PID) running on a 51-microcontroller-unit master control chip. An experimental platform is developed to establish the basic characteristics of the system subject to stepwise inputs and sinusoidal tracking. Test results show that the system design demonstrates excellent control accuracy, fast response, and negligible leak during long operation periods.

关键词： Automatic steering system Hydraulic circuit Proportional directional valve Proportional-integral-derivative(PID) control

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Mechanism of slope failure in loess terrains during spring thawing

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Journal of Mountain Science 2018年第4期15卷 845-858页

作者： XU Jian WANG Zhang-quan REN Jian-wei WANG Song-he jin Long School of Civil Engineering Xi'an University of Architecture and Technology Xi'an 710055 China Institute of Geotechnical Engineering Xi'an University of Technology Xi'an 710048 China State Key Laboratory of Road Engineering Safety and health in Cold and High-altitude Region CCCC First Highway Consultants Co. Ltd. Xi'an 710075 China

Slope failure in loess terrains of Northern China during spring thawing period is closely related to the freeze-thaw cycling that surface soils inevitably experienced. Field surveys were carried out on natural and artificial slopes in thirteen surveying sites located in the Northern Shaanxi, the center of Loess Plateau, covering five characteristic topographic features including tablelands, ridges, hills, gullies and valleys. Based on the scale that is involved in freeze-thaw cycling, the induced failures can be classified into three main modes, i.e., erosion, peeling and thaw collapse, depending on both high porosity and loose cementation of loess that is easily affected. Model tests on loess slopes with gradients of 53.1°, 45.0° and 33.7° were carried out to reveal the heat transfer, water migration and deformation during slope failure. The surface morphology of slopes was photographed, with flake shaped erosion and cracks noted. For three slope models, time histories for the thermal regime exhibit three obvious cycles of freeze and thaw andthe maximum frost depth develops downwards as freeze-thaw cycling proceeds. Soil water in the unfrozen domain beneath was migrated towards the slope surface, as can be noticed from the considerable change in the unfrozen water content, almost synchronous with the variation of temperature. The displacement in both vertical and horizontal directions varies over time and three obvious cycles can be traced. The residual displacement for each cycle tends to grow and the slopes with higher gradients are more sensitive to potentially sliding during freeze-thaw cycling.

关键词： Freeze and thaw Loess Slope failure Water migration heat transfer

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Inhibited aptazyme-based catalytic molecular beacon for amplified detection of adenosine

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Chinese Chemical Letters 2014年第9期25卷 1211-1214页

作者： jin Huang Yong he Xiao-Hai Yang Ke quan Ke-Min Wang State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringKey Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan ProvinceHunan University

Combining the inhibited aptazyme and molecular beacon （MB）, we developed a versatile sensing strategy for amplified detection of adenosine. In this strategy, the adenosine aptamer links to the 8-17 DNAzyme to form an aptazyme. A short sequence, denoted as inhibitor, is designed to form a duplex spanning the aptamer-DNAzyme junction, which blocks the catalytic function of the DNAzyme. Only in the presence of target adenosine, the aptamer binds to adenosine, thus the inhibitor dissociates from the aptamer portion of the aptazyme and can no longer form the stable duplex required to inhibit the catalytic activity of the aptazyme. The released DNAzyme domain will hybridize to the MB and catalyze the cleavage in the presence of Zn2＋, making the fluorophore separate from the quencher and resulting in fluorescence signal. The results showed that the detection method has a dynamic range from 10 nmol/L to 1nmol/L, with a detection limit of 10 nmol/L.

关键词： Aptazyme DNAzyme Catalytic molecular beacon Adenosine

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