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Dynamic Radiographic Analysis of Sympathetic Cervical Spondylosis Instability

Chinese Medical Sciences Journal 2009年第1期24卷 46-49页

作者： Jun Qian ye Tian Gui-xing Qiu jian-hua Hu Department of Orthopedic Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To investigate the correlation between subaxial cervical spine instability and cervical spondylotic sympathetic symptoms as well as the difference of cervical spondylotic subaxial instability between male and female patients. Methods We analyzed retrospectively 318 surgical cases of cervical spondylosis treated at Department of Orthopedic Surgery of Peking Union Medical College Hospital between July 2003 and December 2007. All cases were divided into group A without sympathetic symptoms (n=284) and group B with sympathetic symptoms (n=34). Angular and horizontal translation values between two adjacent vertebral bodies from C2 to C7 were measured separately on hyperflexion and hyperextension lateral cervical spine radiographs. Fisher's exact test was used to evaluate the correlation between subaxial cervical instability and sympathetic symptoms. Intragroup correlation between patient gender and subaxial cervical instability was also evaluated. Results Subaxial instability incidences in groups A and B were 21.8% (62/284) and 55.9% (19/34), respectively. Statistical analysis indicated a definite correlation between subaxial cervical instability and sympathetic symptoms (P=0.000). Among patients without sympathetic symptoms, subaxial instability incidences were 21.4% (37/173) in males and 22.5% (25/111) in females, respectively (P=0.883). While among patients with sympathetic symptoms, subaxial instability incidences were 27.3% (3/11) in males and 69.6% (16/23) in females, respectively, indicating significant difference (P=0.030). Subaxial instability was most commonly seen at C4-C5 intervertebral space in sympathetic cervical spondylosis patients. Conclusions High correlation exists between subaxial cervical spine instability and cervical spondylotic sympathetic symptoms, especially in female patients. Hyperextension and hyperflexion radiographs of cervical spine are important to assess sympathetic cervical spondylotic subaxial instability.

关键词： subaxial cervical spine instability sympathetic cervical spondylosis

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Asymmetric Synthesis and Crystal Structure of a Bioactive Morpholine Derivative

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Chinese Journal of Structural Chemistry 2007年第5期26卷 515-518页

作者： WANG jian-Ping FU Yong-Ju WANG jian-Ge QIN jian-hua CHEN Qing-hua Department of Chemistry Luoyang Normal University Luoyang 471022China Chemical Engineering ＆ Pharmaceutics College Henan Universityof Science and Technology Luoyang 471003 China

A novel morpholine derivative was synthesized by Michael addition/internal nucleophilic substitution of 4-（L）-menthyloxy（1R,2S,5R）-butenolide with phenyl-glyalcohol under mild condition, and its structure was determined by X-ray diffraction. The target compound belongs to orthorhombic, space group P212121 with a = 5.7729（7）, b = 11.5032（14）, c = 25.161（3）A, Mr = 319.35, Z = 4, V = 1670.8（4）A^3, Dc = 1.270 g/cm3, μ（MoKα） = 0.094 mm^-1, F（000） = 680, Flack = 0.01（2）, R = 0.0398 and wR = 0.0914.

关键词： morpholine derivative α-phenyl-glyalcohol,4-(L)-menthyloxy-butenolide asymmetric synthesis

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Recent Development of Chaos Theory in Topological Dynamics

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Acta Mathematica Sinica,English Series 2016年第1期32卷 83-114页

作者： jian LI Xiang Dong ye Department of Mathematics Shantou University Wu Wen-Tsun Key Laboratory of Mathematics USTC Chinese Academy of Sciences and School of Mathematics University of Science and Technology of China

We give a summary on the recent development of chaos theory in topological dynamics, focusing on Li-Yorke chaos, Devaney chaos, distributional chaos, positive topological entropy, weakly mixing sets and so on, and the... 详细信息

关键词： Li-Yorke chaos Devaney chaos sensitive dependence on initial conditions distributionalchaos weak mixing topological entropy Furstenberg family

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Positive effects of PVP in MIC:Preparation and characterization of Al-Core heterojunction fibers

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Defence Technology（防务技术） 2023年第1期19卷 52-62页

作者： Fuwei Li Yue-ting Wang Cheng-ai Wang Yun Shen Ze-hua Zhang jian Cheng Shuang-zhang Wu Ying-hua ye Rui-qi Shen School of Chemistry and Chemical Engineering Nanjing University of Science&TechnologyNanjing210094China Micro-Nano Energetic Devices Key Laboratory Ministry of Industry and Information TechnologyNanjingJiangsu210094China College of Field Engineering Army Engineering University of PLANanjing210007China

The core-shell metastable intermolecular composites(MIC)have attracted much attention in the past few years due to their unique ***,the preparation of Al-Core heterojunction fibers using PVP as a template is *** nano-Al was directly added to the precursor solution of cupric acetate monohydrate(CAM)/Polyvinylpyrrolidone(PVP),and the initial Al@CAM/PVP fibers were obtained via *** core-shell MIC fibers are then obtained by calcining the initial *** morphology,structure,and composition of Al-core MIC fibers were characterized,that the energetic fibers calcined at 300℃,350℃,and 400℃have a core-shell structure with shell compositions CuxO and PVP,CuxO and Cu O,*** energy release characteristics of Al-core MIC were investigated,and preliminary ignition tests were performed using an ignition temperature measuring instrument and a pulsed *** energetic fibers calcined at 300℃exhibited unique *** decomposition of PVP in the shell layer promoted exotherm,and a low-temperature exothermic peak was shown at 372-458℃.Lower ignition temperatures and higher flame heights were observed in the combustion tests than calcination at 350℃and 400℃.An unexpected result was that PVP can play a positive role in Al/CuO ***,this preparation method provided an idea for the integrated preparation of core-shell Al-Core MIC fibers and tuning the properties of MIC.

关键词： Al-Core heterojunction structure Metastable intermolecular composites(MIC) Al/CuO nanothermites Polyvinylpyrrolidone(PVP)

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FLOW REGIMES BELOW AERATORS FOR DISCHARGE TUNNELS

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Journal of Hydrodynamics 2012年第3期24卷 378-382页

作者： MA Fei WU jian-hua College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China

The flow regimes below an aerator influence directly the air entrainment and the cavitation damage control. Based on the theoretical considerations, the experiments of the aerator for a discharge tunnel were conducted, and the relationships between the flow regime and hydraulic and geometric parameters were investigated. The results showed that, there are two kinds of threshold values for the flow regime conversions. One is Fr1-2 standing for the conversion from the fully filled cavity to the partially filled cavity, and the other is Fr2-3 which shows the change from the partially filled cavity to the net air cavity. Two empirical expressions were obtained for the conversions of the flow regimes, which can be used in the designs of the aerators.

关键词： aerator discharge tunnel flow regime filling water jet length

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绵羊痘病毒TaqMan-MGB荧光定量PCR快速检测方法的建立

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中国预防兽医学报 2016年第12期38卷 968-971页

作者：李杨于少雄颜新敏吴国华李健叶奕优赵志荀朱海霞张志东张强中国农业科学院兰州兽医研究所/家畜疫病病原生物学国家重点实验室甘肃兰州730046 深圳出入境检验检疫局动植物检验检疫技术中心广东深圳518045

为建立快速检测绵羊痘病毒(SPPV)快速检测方法基因的方法,本研究参照SPPV ORF068基因设计并合成一对特异性引物和一条MGB探针,经条件优化,建立了SPPV TaqMan-MGB荧光定量PCR快速检测方法。结果显示,该方法可以特异性检测SPPV,而对羊口... 详细信息

为建立快速检测绵羊痘病毒(SPPV)快速检测方法基因的方法,本研究参照SPPV ORF068基因设计并合成一对特异性引物和一条MGB探针,经条件优化,建立了SPPV TaqMan-MGB荧光定量PCR快速检测方法。结果显示,该方法可以特异性检测SPPV,而对羊口疮病毒和猪水疱病病毒等扩增结果均为阴性;而且检出下限为10拷贝/μL;组内组间重复性试验的变异系数均小于3%。上述结果显示本研究建立的TaqMan-MGB qPCR方法特异性强、灵敏度高、重复性好,能够对SPPV进行快速准确的检测。

关键词：绵羊痘病毒荧光定量PCR TaqMan-MGB探针

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arcPycor:an open-source automated GIS tool to co-register elevation datasets

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Journal of Mountain Science 2021年第4期18卷 923-931页

作者： WANG Yu-zhe ye Qing-hua College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Geography and Environment Shandong Normal UniversityJinan 250358China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

Subtraction of elevation datasets(*** elevation models(DEMs)and non-continuous elevation points)acquired at different times is a useful method to monitor landform surface *** to heavy post-processing of these elevation datasets,multi-source errors are introduced into the resulting elevation data *** improve the estimation of elevation change,co-registration of elevation datasets is a *** paper presents an open-source automated GIS tool(arc Pycor)for co-registering elevation *** Pycor is coded in Python 2.7 and is run via Arc GIS for *** performances of arc Pycor have been evaluated using a series of *** benchmark tests,the resolved co-registration vectors of arc Pycor are compared to the predefined shift vectors obtained by artificially misaligning the slave DEMs from the master elevation *** show that arc Pycor is able to co-register DEMs with relative high accuracy and can well align slave DEMs to non-continuous elevation points,which indicates its robustness in co-registering of elevation *** Pycor is also able to co-register multi-sourced DEMs of different resolutions in mountain areas.

关键词： Digital elevation models DEM coregistration ArcGIS Elevation change Terrain analysis

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Denaturation behavior of inclusions in industrial pure iron by calcium treatment

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Journal of Iron and Steel Research International 2023年第2期30卷 249-258页

作者： Xin Liu Yan-ping Bao Cheng-jian hua jian-hua Chu Chao Gu Min Wang State Key Lab of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China

Only a few Chinese enterprises can produce high-quality industrial pure iron,and studies on the smelting process of industrial pure iron were *** inclusions in a melting process were characterized by means of electron microscopy and an automatic inclusion analysis system,and the evolution mechanism of inclusion was studied using thermodynamic calculation to optimize the calcium alloy addition in liquid *** results show that during the smelting process,inclusions mainly composed of Al_(2)O_(3)and spinel are formed before calcium *** calcium treatment,they continuously react with[Ca],[S]and[Ti],grow up,and are removed during refining and tundish *** the end,there are more small-sized inclusions containing CaS,and the contents of Al_(2)O_(3)and spinel are *** to thermodynamic calculations,the appropriate calcium treatment liquid window for the molten steel composition is(10-38)×10^(-6).Calcium treatment has changed the main types of inclusions in industrial pure iron from Al_(2)O_(3)to small-sized inclusions containing CaS and effectively reduces the influence of Al_(2)O_(3)inclusions on the quality of industrial pure iron.

关键词： Industrial pure iron Calcium treatment Inclusion Thermodynamic CaS

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Identification of Antifungal Substance (Iturin A_2) Produced by Bacillus subtilis B47 and Its Effect on Southern Corn Leaf Blight

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Journal of Integrative Agriculture 2012年第1期11卷 90-99页

作者： ye Yun-feng LI Qi-qin FU Gang YUAN Gao-qing MIAO jian-hua LIN Wei College of Agriculture Guangxi University Nanning 530004 P.R.China Guangxi Botanical Garden of Medicinal Plant Nanning 530023 P.R. China Microbiology Research Institute Guangxi Academy of Agricultural Sciences Nanning 530007 P.R. China

Bacillus subtilis B47 is an endophytic bacterium of tomato, and produces substance that strongly inhibits the growth of Bipolaris maydis, the pathogen of southern corn leaf blight （SCLB）, as well as several other phytopathogenic fungi. The antifungal substance was purified from the broth culture of the bacterium using acid precipitation, methanol extraction, and three-step chromatography. Based on FT-IR spectrometry, amino acid composition, and MALDI-TOF-MS/MS CID analyses, the antifungal substance was identified as iturin A2, a cyclic lipopeptide antibiotic. To evaluate the efficacy of iturin A2 for control of SCLB, partially purified iturin A2 （75%, w/v） was applied under different conditions. At the concentration of 300 mg kg-1, iturin A2 showed efficacy ranging from 100 to 53.1% under in vitro, in plot and in field conditions. This efficacy was higher than or similar to that of the fungicide chlorothalonil. When the concentration of iturin A2 was increased to 500 mg kg-1, the control efficacy was enhanced to 64.2% in field, which was significantly higher than that of chlorothalonil. These results indicate that iturin A2 has potential for SCLB control and could be a substitute to synthetic fungicides. To our knowledge, this is the first report on using partially purified iturin A for control of SCLB under field conditions.

关键词： identification Bipolaris maydis biocontrol

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On Boolean elements and derivations in 2-dimension linguistic lattice implication algebras

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Applied Mathematics(A Journal of Chinese Universities) 2023年第2期38卷 274-292页

作者： ZHU hua ZHAO jian-bin School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China Henan Academy of Big Data Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Financial Engineering Zhengzhou 450001China Key Laboratory of Big Data Analysis and Application Zhengzhou 450001China

A 2-dimension linguistic lattice implication algebra(2DL-LIA)can build a bridge between logical algebra and 2-dimension fuzzy linguistic *** this paper,the notion of a Boolean element is proposed in a 2DL-LIA and some properties of Boolean elements are *** derivations on 2DL-LIAs are introduced and the related properties of derivations are ***,it proves that the derivations on 2DL-LIAs can be constructed by Boolean elements.

关键词： derivation Boolean element Lattice implication algebra(LIA) 2-dimension linguistic lattice implication algebra(2DL-LIA) 2-dimension fuzzy linguistic information

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