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Biliary tract external drainage protects against intestinal barrier injury in hemorrhagic shock rats

World Journal of Gastroenterology 2015年第45期21卷 12800-12813页

作者： Lu Wang Bing Zhao Ying Chen Li Ma Er-Zhen Chen En-Qiang mao Department of Emergency Intensive Care Unit Ruijin Hospital Shanghai Jiao Tong University School of Medicine

AIM: To investigate the effects of biliary tract external drainage(BTED) on intestinal barrier injury in rats with hemorrhagic shock(HS). METHODS: BTED was performed via cannula insertion into the bile duct of rats. HS was induced by drawing blood from the femoral artery at a rate of 1 m L/min until a mean arterial pressure(MAP) of 40 ± 5 mm Hg was achieved. That MAP was maintained for 60 min. A total of 99 Sprague-Dawley rats were randomized into a sham group, an HS group and an HS + BTED group. Nine rats in the sham group were sacrificed 0.5 h after surgery. Nine rats in each of the HS and HS + BTED groups were sacrificed 0.5 h, 1 h, 2 h, 4 h and 6 h after resuscitation. Plasma tumor necrosis factor-α(TNF-α), interleukin-6(IL-6), and lipopolysaccharide(LPS) levels were analyzed using enzyme-linked immunosorbent assay. Plasma D-lactate levels were analyzed using colorimetry. The expression levels of occludin and claudin-1 in the ileum were analyzed using Western blot and immunohistochemistry. Histology of the ileumwas evaluated by hematoxylin and eosin staining. RESULTS: Plasma TNF-α levels in the HS + BTED group decreased significantly compared with the HS group at 1 h and 6 h after resuscitation(P < 0.05). Plasma IL-6 levels in the HS + BTED group decreased significantly compared with the HS group at 0.5 h, 1 h and 2 h after resuscitation(P < 0.05). Plasma D-lactate and LPS levels in the HS + BTED group decreased significantly compared with the HS group at 6 h after resuscitation(P < 0.05). The expression levels of occludin in the HS + BTED group increased significantly compared with the HS group at 4 h and 6 h after resuscitation(P < 0.05). The expression levels of claudin-1 in the HS + BTED group increased significantly compared with the HS group at 6 h after resuscitation(P < 0.05). Phenomena of putrescence and desquamation of epithelial cells in the ileal mucosa were attenuated in the HS + BTED group. Ileal histopathologic scores in the HS + BTED group decrea

关键词： Hemorrhagic shock Biliary tract external drainage

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基于RHT的多圆检测改进算法

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中国农业大学学报 2008年第4期13卷 121-125页

作者：丁幼春王书茂中国农业大学工学院

针对多圆检测问题,提出了一种基于RHT的改进算法PHT3(3-point Hough transformation)。对整幅图像特征点按连续性进行点集归类,同时计算有效点的梯度方向信息;按照一定的取点规则在同一点集中取3点,得到候选圆的圆心参数;依据所求圆心... 详细信息

针对多圆检测问题,提出了一种基于RHT的改进算法PHT3(3-point Hough transformation)。对整幅图像特征点按连续性进行点集归类,同时计算有效点的梯度方向信息;按照一定的取点规则在同一点集中取3点,得到候选圆的圆心参数;依据所求圆心参数以及梯度信息判定选取3点的有效性,以降低Hough变换的无效累积。针对常规确定圆半径精度有限的缺陷,提出利用点集并结合候选半径的均方差来获得亚像素半径,同时解决了同心圆半径的检测问题。与RHT算法进行对比检测,结果表明:PHT3算法检测时间为RHT算法检测的1/6,且无效累积更小,同时保留了Hough变换对局部信息缺损不敏感和对随机噪声鲁棒性强的特点。

关键词：多圆检测 RHT PHT(point Hough transformation) 无效累积点集归类

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Progress in the research of radical anion ligands and their complexes

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Chinese Science Bulletin 2014年第24期59卷 2936-2944页

作者： Guoliang mao Yuanmeng Song Tianjun Hao Ying Li Tao Xu Haiyan Zhang Tao Jiang Provincial Key Laboratory of Oil & Gas Chemical Technology College of Chemistry and Chemical Engineering Northeast Petroleum University

Recent progress in the research of radical anion ligands and their complexes with metals were summarized in this *** anions were sorted into several types including iminosemiquinonate and iminoquinonate radical,nitroxide radical,heterocycle radical *** characteristics and properties of the corresponding complexes were *** complexes exhibited novel properties and possibility for applications in organic magnetic materials and transition metal catalysis.

关键词：阴离子自由基复合物配体过渡金属催化有机磁性材料氮氧自由基配合物杂环

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Preparation of semisolid A356 alloy slurry with larger capacity cast by serpentine channel

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Transactions of Nonferrous Metals Society of China 2011年第3期21卷 455-460页

作者：杨小容毛卫民孙斌煜太原科技大学材料科学与工程学院太原030024 北京科技大学材料科学与工程学院北京100083

The integral microstructure of semisolid A356 alloy slurry with larger capacity cast by serpentine channel was studied and the influence of cooling ability of serpentine channel on the microstructure was investigated. The results indicate that ideal slurry with larger capacity can be prepared through serpentine channel with good cooling ability. When the serpentine channel was continuously cooled, both the longitudinal and the radial microstructure of the slurry was composed of granular primary phase and the integral microstructure uniformity of the slurry was good. However, uncooled serpentine channel can only produce larger slurry with fine grains in positions adjacent to its centre and with a large number of dendrites in positions close to its edge, thus, the radial microstructure of larger slurry is nonuniform. The pouring temperature is set up to 680 °C and the solid shell inside the channel can be avoided at this pouring temperature.

关键词： semisolid serpentine channel A356 aluminum alloy larger capacity

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Ionic liquid driven nanostructure self-assembly in organic mixed ionic-electronic conductors

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Green Chemical Engineering 2024年第3期5卷 273-275页

作者： Xingyu Hu Ning mao Dezhen Zhao Xu Liu Qingqing Sun Huige Yang Xuying Liu Hanyu Jia School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China

As a type of three-terminal transistor,organic electrochemical transistors(OECTs)can effectively modulate their channel conductivity through ionic electrochemical doping across gate-electrolyte-channel routes,endowing their versatile applications in bioelectronics,low power logic circuit,and neuromorphic computing[1].In the concrete,free cations/anions in aqueous electrolytes driven by gate voltage can effectively penetrate into the bulk channel,then resulting in the volumetric n/p-doping of channel ***,the film thickness of the channel also involves the modulation of OECT performance owing to the polymer swelling and ion penetration,which is hardly occurred in other transistors working in field-effect mode.

关键词： doping ionic swelling

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Numerical simulation and behavior prediction of a space net system throughout the capture process: Spread, contact, and close

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International Journal of Mechanical System Dynamics 2023年第3期3卷 265-273页

作者： Weicheng Huang Huaiwu Zou Yongjun Pan Kai Zhang Junjie Zheng Jinpeng Li Shuai mao School of Mechanical Engineering Southeast UniversityNanjingChina Shanghai Institute of Aerospace Systems Engineering ShanghaiChina College of Mechanical and Vehicle Engineering Chongqing UniversityChongQingChina

In this paper,we develop an exhaustive numerical simulator for the dynamic visualization and behavior prediction of the tether-net system during the whole space debris capture phases,including spread,contact,and *** of all,to perform its geometrically nonlinear deformation,discrete different geometry theory is applied to model the mechanical response of a flexible *** on the discretization of the whole structure into multiple vertexes and lines,the internal force and associated Hession are derived in a closed form to solve a series of nonlinear dynamic equations of *** spread and deployment of a packaged net can be realized using this well-established net ***,a multidimensional incremental potential formulation is selected to achieve the intersection-free boundary nonlinear contact and collision between the deformable net and rigid ***,for the closing mechanism analysis,a log-like barrier functional is derived to achieve the nondeviation condition between the ring–rod linkage *** C2 continuous log barrier functionals constructed for both the contact model and the linkage system are smooth and differentiable,and,therefore,the nonlinear net capture dynamic system can be efficiently solved through a fully implicit time ***,as a demonstration,the whole capture process of a defunct satellite using a hexagon net is simulated through our well-established numerical *** believe that our comprehensive numerical methods could provide new insight into the optimal design of active debris removal systems and promote further development of the online control of tether tugging systems.

关键词： tether-net system space debris capture nonlinear dynamics multiflexible body dynamics

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IMPROVING　SOLIDS　SUSPENSION　USING　DEFLECTING　BAFFLES　IN　GASLIFT　LOOP　REACTORS

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中国有色金属学会会刊：英文版 1996年第3期6卷 25-28页

作者： Luan Meilang mao Zaisha Wang Rong Chen Jiayong(Institute of Chemical Metallurgy, Academia Sinica, Beijing 100080) ACAD SINICA INST CHEM METBEIJING 100080PEOPLES R CHINA

ＩＭＰＲＯＶＩＮＧＳＯＬＩＤＳＳＵＳＰＥＮＳＩＯＮＵＳＩＮＧＤＥＦＬＥＣＴＩＮＧＢＡＦＦＬＥＳＩＮＧＡＳＬＩＦＴＬＯＯＰＲＥＡＣＴＯＲＳ￥ＬｕａｎＭｅｉｌａｎｇ；ＭａｏＺａｉｓｈａ；ＷａｎｇＲｏｎｇ；ＣｈｅｎＪｉａｙ... 详细信息

ＩＭＰＲＯＶＩＮＧＳＯＬＩＤＳＳＵＳＰＥＮＳＩＯＮＵＳＩＮＧＤＥＦＬＥＣＴＩＮＧＢＡＦＦＬＥＳＩＮＧＡＳＬＩＦＴＬＯＯＰＲＥＡＣＴＯＲＳ￥ＬｕａｎＭｅｉｌａｎｇ；ＭａｏＺａｉｓｈａ；ＷａｎｇＲｏｎｇ；ＣｈｅｎＪｉａｙｏｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＣｈ...

关键词： loop reactor deflecting baffles swirling flow

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六岔河流域多水塘-沟渠系统中土壤养分空间变异特征研究

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水利学报 2011年第4期42卷 425-430页

作者：毛战坡王世岩周晓玲刘畅中国水利水电科学研究院水环境研究所北京100038 中国科学院生态环境研究中心北京100085

借助地理信息系统,利用地统计学中的半变量变异函数研究了巢湖北岸六岔河流域多水塘-沟渠系统中的土壤养分空间变异特征。研究结果表明:土壤中有机物(OM)、总氮(TN)、总磷(TP)、氨态氮(NH4-N)、硝态氮(NO3-N)的空间变异函数理论模型均... 详细信息

借助地理信息系统,利用地统计学中的半变量变异函数研究了巢湖北岸六岔河流域多水塘-沟渠系统中的土壤养分空间变异特征。研究结果表明:土壤中有机物(OM)、总氮(TN)、总磷(TP)、氨态氮(NH4-N)、硝态氮(NO3-N)的空间变异函数理论模型均符合球状模型,总磷、氨态氮、有机物空间异质性中的结构性变异大于随机变异;总氮、硝态氮的结构性变异小于随机变异。有机物、总氮、总磷、氨态氮、硝态氮等空间自相关范围具有明显的差异性,变化范围为123.9～517.36m,呈现出氨态氮>硝态氮>总氮>有机物>总磷,变化范围相差4倍左右,上述差异主要与养分特性、土地利用以及多水塘-沟渠系统景观等因素关系密切。

关键词：土壤养分多水塘-沟渠系统空间变异地统计学

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No Other Choice But This One

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China Population Today 2012年第4期29卷 42-47页

作者： mao Jianbo

The Most Important Par of Painting Is Conveying Spiritual Connotation Du Juemin thinks that there has been a problem in Chinese figure painting- it is the issue of modeling. The figure paintings

关键词：中国人人物画绘画画家

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金属铀表面氧化动力学的X射线衍射研究

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原子能科学技术 2006年第5期40卷 529-533页

作者：张延志管卫军帅茂兵汪小琳赖新春王勤国表面物理和化学国家重点实验室四川绵阳621907

利用X射线衍射和Rietveld方法研究室温～150℃和300℃下金属铀表面氧化，对氧化过程中试样的表面结构以及氧化动力学进行分析。将试样表面氧化物随时间的变化作定量计算，绘制出不同温度下金属铀表面的氧化动力学曲线，对50～150℃范围... 详细信息

利用X射线衍射和Rietveld方法研究室温～150℃和300℃下金属铀表面氧化，对氧化过程中试样的表面结构以及氧化动力学进行分析。将试样表面氧化物随时间的变化作定量计算，绘制出不同温度下金属铀表面的氧化动力学曲线，对50～150℃范围内的氧化动力学数据进行拟合，获得不同温度下的氧化反应速率常数，由此得到大气环境下金属铀表面形成UO2的活化能为46．0kJ／mol。在300℃下，氧化产物U逐渐在U3O8上形成，其形成过程符合成核生长机理。

关键词：金属铀动力学 X射线衍射 Rietveld方法

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