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侧向冲击载荷作用下股骨-骨盆复合体的生物力学响应

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医用生物力学 2011年第6期26卷 502-507页

作者：王冬梅董谢平张琳琳上海交通大学机械与动力工程学院生物医学制造与生命质量工程研究所上海200240 江西省人民医院骨科南昌330006 上海理工大学上海医疗器械高等专科学校上海200093

目的利用三维有限元分析方法研究股骨-骨盆复合体在人体侧向摔倒时冲击载荷作用下的生物力学行为特性。方法基于中国力学虚拟人模型库建立股骨-骨盆-软组织复合体的三维有限元模型,包括皮质骨、松质骨和软组织;同时,构建一个刚体平面仿... 详细信息

目的利用三维有限元分析方法研究股骨-骨盆复合体在人体侧向摔倒时冲击载荷作用下的生物力学行为特性。方法基于中国力学虚拟人模型库建立股骨-骨盆-软组织复合体的三维有限元模型,包括皮质骨、松质骨和软组织;同时,构建一个刚体平面仿真地面。约束地面刚体,对整个股骨-骨盆-软组织复合体模型施加侧向2 m/s的速度载荷,整个仿真分析时间设定为20 ms。通过三维有限元分析计算获得股骨-骨盆侧摔冲击过程中应力应变变化特性。结果在13 ms时,股骨大转子处软组织与地面的接触力达到最大值7 656 n,对应的骨盆软组织上的最大等效应力值为2.64 MPa。冲击过程中,耻骨联合处骨皮质上等效应力出现极大值,为142.64 MPa,接近其屈服强度;股骨颈和大转子处应力水平较高,股骨颈处皮质骨上的最大等效应力值为76.49 MPa;股骨颈处松质骨上的最大等效应力值为8.44 MPa,最大压缩应变值为0.94%;股骨大转子处松质骨上的最大等效应力值为8.50 MPa,最大压缩应变值为0.93%。结论人体股骨-骨盆复合体在侧摔减速冲击载荷作用下股骨颈、大转子及耻骨联合处易出现骨折。

关键词：股骨-骨盆复合体侧摔减速冲击生物力学有限元分析应力分布

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时态网络节点相似性度量及链路预测算法

东北大学学报（自然科学版） 2020年第1期41卷 29-34,43页

作者：陈东明袁泽枝黄新宇王冬琦东北大学软件学院

详细分析和阐述了时态网络中的链路预测问题,将时态网络按时间顺序划分为具有相同时间间隔的多层网络快照序列.针对基于共同邻居的相似性指标对网络链路刻画粒度较粗糙的问题,提出了基于邻居节点聚类系数的相似性度量指标nCC和nCCP,并... 详细信息

详细分析和阐述了时态网络中的链路预测问题,将时态网络按时间顺序划分为具有相同时间间隔的多层网络快照序列.针对基于共同邻居的相似性指标对网络链路刻画粒度较粗糙的问题,提出了基于邻居节点聚类系数的相似性度量指标nCC和nCCP,并基于此提出时态网络链路预测算法.通过在真实数据集上的对比实验验证了利用邻居节点的聚类信息可以提高预测精度.利用真实邮件数据集验证了所提出的链路预测算法预测效果的优越性,并且实验结果证明越接近预测时间的网络结构对预测结果影响越大.

关键词：时态网络链路预测多层网络聚类相似性

HPLC-MS/MS法同时测定肿节风中8种化学成分含量

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亚太传统医药 2024年第9期20卷 33-37页

作者：程晓敏熊莺刘英发钟志坚李岚张礼仲邓攀董鑫汤明娟江中药业股份有限公司

目的:采用HPLC-MS/MS同时测定肿节风中的刺五加苷b1、咖啡酸、芦丁、迷迭香酸、绿原酸、隐绿原酸、新绿原酸和异嗪皮啶等8种化学成分含量。方法:采用Waters ACQUITY UPLC?BEH C18色谱柱（2.1 mm×100 mm, 1.7μm）;以乙腈-水（含0.04%... 详细信息

目的:采用HPLC-MS/MS同时测定肿节风中的刺五加苷b1、咖啡酸、芦丁、迷迭香酸、绿原酸、隐绿原酸、新绿原酸和异嗪皮啶等8种化学成分含量。方法:采用Waters ACQUITY UPLC?BEH C18色谱柱（2.1 mm×100 mm, 1.7μm）;以乙腈-水（含0.04%的甲酸）为流动相，梯度洗脱，流速为0.25 mL/min,进样量5μL,柱温35℃;电喷雾离子化源（ESI）;多反应监测模式（MRM）进行定性定量分析。结果:在该色谱条件下，肿节风中8种化学成分在各自范围内，峰面积和浓度呈良好的线性关系（r>0.995）,平均加样回收率（n=9）为97.85%～102.89%,RSD为0.89～2.36,经过测定6个产地的肿节风中刺五加苷b1、咖啡酸、芦丁、迷迭香酸、绿原酸、隐绿原酸、新绿原酸、异嗪皮啶的含量依次为4.9～40.8μg/g、642.7～1 096.5μg/g、5.4～100.6μg/g、908.8～2 488.9μg/g、138.8～975.2μg/g、90.9～506.1μg/g、89.6～707.4μg/g、986.1～1840.8μg/g。结论:该方法准确，重现性好，专属性高，可用于肿节风的质量控制。

关键词： HPLC-MS/MS 肿节风化学成分

Properties of p-niO/n-Gan Diodes Fabricated by Magnetron Sputtering

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Chinese Physics Letters 2012年第10期29卷 190-192页

作者： WAnG Hui zhAnG Bao-Lin WU Guo-Guang WU Chao SHI zhi-Feng zhAO Yang WAnG Jin MA Yan DU Guo-Tong dong Xin State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012 College of Physics and Engineering Henan University of Science and TechnologyLuoyang 471003

The p-niO thin film is prepared by radio frequency magnetron sputtering on the n-Gan/sapphire substrate to form p-niO/n-Gan heterojunction *** structural,optical and electrical properties of the p-niO thin film are *** results indicate that the niO film has good crystal qualities and stable p-type *** current-voltage measurement of the p-niO/n-Gan diode exhibits typical rectifying behaviour with a turn-on voltage of about 2.2 *** forward bias,a prominent ultraviolet emission centered at 375 nm is observed at room ***,the mechanism of the light emission is discussed in terms of the band diagrams of the heterojunction in detail.

关键词： temperature heterojunction sapphire

Local thermal conductivity of polycrystalline Aln ceramics measured by scanning thermal microscopy and complementary scanning electron microscopy techniques

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Chinese Physics B 2012年第1期21卷 374-379页

作者： zhang Yue-Fei Wang Li R.Heiderhoff A.K.Geinzer Wei Bin Ji Yuan Han Xiao-dong L.J.Balk zhang Ze Institute of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing 100124China Department of Electronics Faculty of ElectricalInformation and Media EngineeringUniversity of WuppertalWuppertal D-42119Germany Department of Materials Science Zhejiang UniversityHangzhou 300038China

The local thermal conductivity of polycrystalline aluminum nitride （A1n） ceramics is measured and imaged by using a scanning thermal microscope （SThM） and complementary scanning electron microscope （SEM） based techniques at room temperature. The quantitative thermal conductivity for the A1n sample is gained by using a SThM with a spatial resolution of sub-micrometer scale through using the 3w method. A thermal conductivity of 308 W/m-K within grains corresponding to that of high-purity single crystal A1n is obtained. The slight differences in thermal conduction between the adjacent grains are found to result from crystallographic misorientations, as demonstrated in the electron backscattered diffraction. A much lower thermal conductivity at the grain boundary is due to impurities and defects enriched in these sites, as indicated by energy dispersive X-ray spectroscopy.

关键词： thermal conductivity A1n ceramics scanning thermal microscopy scanning electronmicroscopy

Identities Involoving Some numbers Related to Dyck Paths

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Journal of Mathematical Research and Exposition 2005年第3期25卷 441-446页

作者：孙怡东南开大学组合数学研究中心天津300071

In the paper we derive many identities of forms ∑i=0^n（-1）^n-i（i^n）Um＋k＋i,k＋i=f（n）and ∑ i=o^2n（-1）^i（i^2n）Um＋k＋i,k＋i=9（n）by the Cauchy Residue Theorem and an operator method, where Un, k are number... 详细信息

关键词： Identities Dyck path Catalan numbers Motzkin numbers.

Plasma gelsolin level predicts acute kidney injury after cardiopulmonary bypass in infants and young children

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World Journal of Pediatrics 2018年第2期14卷 143-150页

作者： Shan-Shan Shi Xiao-Jie Yue dong-Yan zhao Jia-Jie Fan Jian-Guo Xu Xi-Wang Liu Bao-Li Cheng Xiang-Ming Fang Jie Fan Qiang Shu Cardiac Intensive Care Unit The Children's Hospital of Zhejiang University School of MedicineHangzhouChina The Key Laboratory for Diagnosis and Therapy of neonatal Diseases The Children's Hospital of Zhejiang University School of MedicineHangzhouChina Department of Thoracic and Cardiovascular Surgery The Children's Hospital of Zhejiang University School of MedicineHangzhouChina Department of Anesthesiology The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Surgery University of Pittsburgh School of MedicinePittsburghPAUSA

Background Acute kidney injury(AKI)after cardiopulmonary bypass(CPB)is a common complication especially in pedi-atric *** gelsolin(pGSn)is an anti-inflammatory factor through binding with actin and pro-inflammatory cytokines in *** in pGSn has been reported in some pathologic *** purpose of the study was to determine the alterations of pGSn level in infants and young children after CPB and the role of pGSn as a predictor for the morbidity and severity of post-CPB *** Sixty-seven infants and young children at age≤3 years old undergoing CPB were prospectively *** levels were measured during peri-operative period with enzyme-linked immuno-sorbent assay and normalized with plasma total protein *** clinical characteristics of the patients were also *** In patients developing AKI,the normalized pGSn(pGSn_(n))levels significantly decreased at 6 h post-operation and remained low for 24 h post-operation as compared to the patients with *** at 6 h post-operation combining with CPB time presents an excellent predictive value for *** Decreased pGSn_(n)identifies post-CPB AKI in the patients≤3 years old,and is associated with adverse clini-cal *** findings suggest that circulating GSn in post-CPB patients may have beneficial effects on diminishing inflammatory responses.

关键词： Acute kidney injury Cardiopulmonary bypass Infants Plasma gelsolin Young children

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基于SOA的供应链信息共享系统研究

物流技术 2006年第7期25卷 217-220页

作者：黎英董宝田北京交通大学交通运输学院北京100044

对供应链信息共享进行详细分析,提出信息共享模型和信息共享方式,在此基础上,把SOA思想引入供应链信息共享系统,提出一个信息共享系统架构,它的设计遵循SOA设计原则并采用W eb服务作为基本单元,能够解决供应链信息集成的复杂性等问题。

关键词：信息共享 SOA Web服务供应链

In situ carrier tuning in high temperature superconductor Bi2Sr2CaCu2O(8+δ)by potassium deposition

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Science Bulletin 2016年第13期61卷 1037-1043页

作者： Yuxiao zhang Cheng Hu Yong Hu Lin zhao Ying Ding Xuan Sun Aiji Liang Yan zhang Shaolong He Defa Liu Li Yu Guodong Liu Xiaoli dong Genda Gu Chuangtian Chen Zuyan Xu Xingjiang zhou national Laboratory for Superconductivity Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences Beijing 100190 China Brookhaven national Laboratory Condensed Matter Physics and Materials Science Department New York NY 11973 USA Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China

We report a successful tuning of the hole doping level over a wide range in high temperature superconductor Bi2Sr2CaCu2O8＋δ （Bi2212） through successive in situ potassium （K） deposition. By taking high resolution angleresolved photoemission measurements on the Fermi surface and band structure of an overdoped Bi2212 （To = 76 K） at different stages of K deposition, we found that the area of the hole-like Fermi surface around the Brillouin zone corner （n,n） shrinks with increasing K deposition. This indicates a continuous hole concentration change from initial - 0.26 to eventual 0.09 after extensive K deposition, a net doping level change of 0.17 that makes it possible to bring Bi2212 from being originally overdoped, to optimally-doped, and even- tually becoming heavily underdoped. The electronic behaviors with K deposition are consistent with those of Bi2212 samples with different hole doping levels. These results demonstrate that K deposition is an effective way of in situ controlling the hole concentration in Bi2212. This work opens a good way of studying the doping evolution of electronic structure and establishing the electronic phase diagram in Bi2212 that can be extended to other cuprate superconductors.

关键词： Bi2212 - Superconductor- K-deposition -Photoemission Fermi surface