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Single-legweight limit of fixation model of simple supracondylar fracture of the femur

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Acta Mechanica Sinica 2019年第4期35卷 926-939页

作者： Guo-Yu Bai Xiang-Hong Xu jin-hui wang Ning Sun Tianjin Key Laboratory of Modern Engineering Mechanics Department of Mechanics Tianjin UniversityTianjin 300072 China State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China Beijing Jishuitan Hospital Beijing 100035China

Postoperative early rehabilitation training for supracondylar fracture of femur aids in accelerating the healing of fractures with shorter recovery periods. Presently, clinical studies on post-operative early weight training are still in the nascent stages. The weight bearing capacity at different healing stages typically depends on clinical experience and there is a lack of standards to quantify the weight that would be conducive to the healing of fractures. In this paper, a 3D geometric model of the femur is obtained using imaging data, a locking plate fixation model of a simple supracondylar fracture of the femur, which considers the angle and spatial direction of the fracture surface, is established, the stress distribution and load transmission mechanism of the fracture fixation model on a single leg standing posture are studied and the weight bearing capacity of a standing single leg at the early stage of fracture is given. This provides the basis for objective quantification of postoperative early weight bearing capacity.

关键词： Simple supracondylar fracture of the femur Early weight bearing Single-leg weight limit

A new triterpene saponin from the leaves of Ilex kudincha

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Chinese Chemical Letters 2009年第11期20卷 1331-1334页

作者： Wen Jian Zuo Yi Mei Zeng Yue Hu He Meng Zhen hui wang jin hui wang School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China School of Pharmacy Shihezi University Shihezi 832002 China

A new compound, kudinoside LZ2 （1）, was isolated from the leaves of llex kudincha. Its structure was elucidated by the combination of one- and two-dimensional NMR analysis, HR-ESI-MS, CD spectrum measurement and che... 详细信息

关键词： llex kudincha Kudinoside LZ2 Aquifoliaceae

A New Phytosterone from Cyanotis arachnoidea

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Chinese Chemical Letters 2002年第3期13卷 245-246页

作者： Cheng Yu TAN jin hui wang Wan XIAO Xian LI Research Department of Natural Medicinal Shenyang Pharmaceutical UniversityShenyang110015

A new phytosterone named cyanosterone B (1) has been isolated from Cyanotis arachnoidea C. B. Clarke. The structure of cyanosterone B was elucidated as 3 b, 5 b, 14 a, 20 R, 22 R-pentahydroxy-cholest-7-en-6-one ... 详细信息

关键词： Cyanotis arachnoidea cyanosterone B

Experiment of drag characteristics of a novel variable geometry flame-holder

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航空动力学报 2011年第11期26卷 2485-2494页

作者： LIU Yang jin Jie wang hui-ru LIU Yu-ying YANG Mao-lin School of Jet Propulsion Beijing University of Aeronautics and AstronauticsBeijing 100191China

A novel variable geometry flame-holder(VGF) based on V-gutter was *** structural characteristics of the flame holder were *** study on drag characteristics of the VGF on un-burning and burning states was conducted in a rectangular combustion test *** influence of the change of gutter trailing edge width w on pressure recovery in different operating conditions was analyzed ***,drag characteristics in different trailing edge width variation modes were *** show that:(1) Narrowing w can observably raise the total pressure recovery σ but the highest σ is not obtained at minimum w.(2) The relationship of drag coefficient ψ and w in the un-burning conditions can be well expressed in a form of exponential equation(w/d>0.4).(3) Drag characteristics are not sensitive to the variation modes and speeds of w.(4) In the burning condition,σ decreases with the increasing of w basically and the course can be divided into three *** results and experimental data presented in this paper would enhance the phenomenological understanding of this type of VGF,and would contribute to the next experimental study and numerical calculus of this novel VGF.

关键词： flame-holder variable geometry afterburner augmentor drag characteristics

A new lignan derivative from the root of Ilex pubescens

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Chinese Chemical Letters 2008年第5期19卷 550-552页

作者： Yu Bo Zhou jin hui wang Xiang Mei Li Xian Li School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China

One new compound, ilexlignan A （1）, was isolated from the root of llex pubescens. Its structure was elucidated by the combination of one- and two-dimensional NMR analysis, mass spectrometry, CD spectrum measurement ... 详细信息

关键词： llex pubescens llexlignan A Lignan

A new isoflavane from processed Astragalus membranaceus

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Chinese Chemical Letters 2007年第9期18卷 1092-1094页

作者： Wei Liu jing Chen Wen Jian Zuo Xian Li jin hui wang Shengyang Pharmaceutical University Shenyang 10016 China

A new isoflavane named astraganoside, together with five known compounds had been isolated from the processed Astragralus membranaceus. The structure of the novel compound was elucidated as (3R, 4R)-3-(2-hydroxy-3,4-dimethoxyphenyl)chroman-4,7-diol-7-O-β-d-glucopyranoside (1) based on spectroscopic methods including UV, IR, ESI-MS, 1D NMR and 2D NMR techniques.

关键词： Processed Astragalus membranaceus Isoflavane Astraganoside

High-Temperature Stability of Mg-1Al-12Y Alloy Containing LPSO Phase and Mechanism of Its Portevin-Le Chatelier(PLC)Effect

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 982-998页

作者： Qian-Long Ren Shuai Yuan Shi-Yu Luan jin-hui wang Xiao-Wei Li Xiao-Yu Liu Qinghai Provincial Key Laboratory of New Light Alloys Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and FormingQinghai UniversityXining810016China School of Materials Science and Engineering Shenyang University of TechnologyShenyang110870China

In this study,the high-temperature stability and the generation mechanism of the Portevin-Le Chatelier(PLC)effect in solid-solution Mg-1Al-12Y alloy with different heat treatment processes were investigated by adjusting the content of long-period stacking ordered(LPSO)*** was found that the content of LPSO phases in the alloys differed the most after heat treatment at 530℃for 16 h and 24 h,with values of 13.56%and 3.93%***,high-temperature tensile experiments were conducted on these two alloys at temperatures of 150℃,200℃,250℃,and 300℃.The results showed that both alloys exhibited the PLC effect at temperatures ranging from 150 to 250℃.However,at a temperature 300℃,only the alloy with a greater concentration of LPSO phases exhibited the PLC effect,whereas the alloy with a lower proportion of LPSO phases did not exhibit this ***,both alloys exhibited remarkable high-temperature stability,with the alloy containing a greater percentage of LPSO phases also demonstrating superior *** underlying mechanism for this phenomenon lies in the exceptional high-temperature stability exhibited by the second phase within the ***,the LPSO phase effectively obstructs the movement of dislocations,and it also undergoing kinking to facilitate plastic deformation of the *** results indicate that the PLC effect can be suppressed by reducing dislocation pile-up at grain boundaries,which leads to a decrease in alloy plasticity but an increase in *** presence of the PLC effect in the WA121 alloy is attributed to the abundant dispersed second phase within the alloy,which initially hinders the movement of dislocations,leading to an increase in stress,and subsequently releases the dislocations,allowing them to continue their movement and thereby reducing in stress.

关键词： Magnesium alloy Long-period stacking ordered(LPSO)phase Portevin-Le Chatelier effect High temperature

A new triterpenoid saponin from the leaves and stems of Panax quinquefolium L.

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Chinese Chemical Letters 2009年第10期20卷 1207-1210页

作者： Guo Yu Li Yi Mei Zeng He Meng Xian Li jin hui wang School of Pharmacy Shihezi University Shihezi 832002 China School of Traditional Chinese Materia Medica. Shenyang Pharmaceutical University Shenyang 110016 China

One new triterpcnoid saponin, quinquenoside L17 （1）, was isolated from the leaves and stems of Panax quinquefolium L., and its structure was elucidated as 20-O-[（β-D-xylopyranosyl-（1-6）-O-β-D-glucopyranosy）]-6-O-β-D-glucopyranosy1-dammar-24-ene- 3,6,12,20-tetraol, by the combination analysis of one-dimensional NMR and two-dimensional NMR, mass spectrometry, CD spectrum and chemical evidences.

关键词： Panax quinquefolium L. Quinquenoside L17 Triterpenoid saponin

Hepatoprotective effect of Cichorium intybus L.,a traditional Uighur medicine,against carbon tetrachloride-induced hepatic fibrosis in rats

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World Journal of Gastroenterology 2014年第16期20卷 4753-4760页

作者： Guo-Yu Li Hong-Ying Gao Jian Huang jin Lu jing-Kai Gu jin-hui wang Research Center for Drug Metabolism College of Life ScienceJilin University School of Pharmacy Shihezi University School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University

AIM: To investigate the hepatoprotective effect of a Cichorium intybus L. extract (CIE) on CCl4-induced hepatic fibrosis in rats.

关键词： Cichorium intybus L. extract Traditional Uighur medicine Hepatic fibrosis Carbon tetrachloride