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小儿垂体朗格汉斯细胞组织细胞增生症临床特征和MRI表现

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分子影像学杂志 2024年第1期47卷 31-35页

作者：杨春兰徐守军刘龙平谢丽春深圳市儿童医院血液肿瘤科广东深圳518026 深圳市儿童医院放射科广东深圳518026 广州医科大学附属第三医院儿科广东广州510530

目的探讨小儿垂体朗格汉斯细胞组织细胞增生症(LCH)的临床特征和MRI表现。方法回顾性分析2014年11月~2023年8月经病理证实的23例垂体LCH患儿MRI资料,其中男12例,女11例,年龄1岁~12岁6月(6.72±3.33岁)。观察病变部位、垂体高度、神经... 详细信息

目的探讨小儿垂体朗格汉斯细胞组织细胞增生症(LCH)的临床特征和MRI表现。方法回顾性分析2014年11月~2023年8月经病理证实的23例垂体LCH患儿MRI资料,其中男12例,女11例,年龄1岁~12岁6月(6.72±3.33岁)。观察病变部位、垂体高度、神经垂体是否存在、垂体柄形态、大小、垂体强化方式、垂体/松果伴随病变等,并总结、归纳垂体LCH的MRI表现。结果首次就诊原因主要为尿崩症,其它就诊症状为顶部包块2例,顶部压痛1例,颈部包块1例。垂体单系统受累16例,其余均为多系统受累,垂体外常累及颅面骨,少见受累部位为肺部、肋骨等。腺垂体明显凹陷、变薄1例,饱满/隆起4例;神经垂体高信号均未见;垂体柄增粗13例,细小2例,另有1例漏斗部线样狭窄、上段结节状增粗,无明显增粗/细小7例;增强后垂体均明显均匀强化;伴随Rathke囊肿/残腔3例,松果体囊肿2例。结论小儿垂体LCH磁共振表现具有一定特征性,有助于诊断。

关键词：垂体朗格汉斯细胞组织细胞增生症磁共振成像

不同生育时期甜高粱茎秆糖锤度与农艺性状及生物产量的相关分析

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河南农业科学 2019年第9期48卷 46-53页

作者：周亚星周伟徐寿军王振国李资文常宇新刘鹏张永亮内蒙古民族大学农学院内蒙古通辽028043 通辽市农业科学研究院内蒙古通辽028043

为探究甜高粱不同生育时期茎秆糖锤度与农艺性状及生物产量间的相关性,明确影响甜高粱糖锤度形成的主要因子,为合理评价与利用现有种质资源及新品种选育提供参考依据,以sw-1、sw-2、sw-3和sw-4四个甜高粱品系为试材,研究了开花期、灌浆... 详细信息

为探究甜高粱不同生育时期茎秆糖锤度与农艺性状及生物产量间的相关性,明确影响甜高粱糖锤度形成的主要因子,为合理评价与利用现有种质资源及新品种选育提供参考依据,以sw-1、sw-2、sw-3和sw-4四个甜高粱品系为试材,研究了开花期、灌浆期、乳熟初期、乳熟后期和蜡熟期茎秆糖锤度与株高、榨汁率、有效糖含量和生物产量的相关关系。结果表明,不同生育时期茎秆糖锤度与株高的相关性未达到显著水平;灌浆期茎秆糖锤度与榨汁率、有效糖含量呈显著负相关,与生物产量则呈极显著负相关。开花期的茎秆糖锤度与灌浆期的呈正相关,与乳熟初期、乳熟后期、蜡熟期的呈负相关;灌浆期的茎秆糖锤度与乳熟初期、乳熟后期的呈负相关,与蜡熟期的呈正相关;乳熟初期的茎秆糖锤度与乳熟后期、蜡熟期的均呈正相关;乳熟后期与蜡熟期的茎秆糖锤度呈正相关。对蜡熟期与开花期、灌浆期、乳熟初期、乳熟后期的茎秆糖锤度进行通径分析显示,乳熟初期茎秆糖锤度对蜡熟期茎秆糖锤度的影响最大,通径系数为1.418 3。综合以上分析得出,在甜高粱育种中选择高产、高糖锤度的材料时,应着重选择乳熟初期糖锤度高的亲本。

关键词：甜高粱糖锤度农艺性状产量相关性生育时期

Coupled evolution of piston asperity and cylinder bore contour of piston/cylinder pair in axial piston pump

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Chinese Journal of Aeronautics 2023年第8期36卷 395-407页

作者： Fei LYU Junhui ZHANG shoujun ZHAO Kun LI Bing xu Weidi HUANG Haogong xu Xiaochen HUANG State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Beijing Institute of Precision Mechatronics and Controls Beijing 100076China Qing’an Group Co. Ltd.Xi’an 710077China

The wear condition of the piston/cylinder pair is crucial to the performance and reliability of the axial piston *** hard piston surface,the soft cylinder bore surface,and the interface oil film affects each other during the wear ***,in the mixed lubrication region,the geometry of the hard piston surface asperity directly affects the wear of soft cylinder bore surface,while the asperities may deform or even degrade when penetrating and sliding against the cylinder *** far,there is no suitable method to simulate their coupled *** paper proposed a wear process simulation model considering the real-time interaction between the elasto-plastic deformation of the piston surface asperity,the wear contour of the cylinder bore,and the lubrication condition of the *** offline library of the elasto-plastic constitutive behavior of the asperity based on the finite element method(FEM)is established as a part of the simulation model to precisely analyze the deformation and degradation of the asperity and quickly invoke them in the numerical wear process *** simulation and experimental results show that the piston asperity and the cylinder bore contour converge to a steady state after running-in for about 0.5 *** distribution of the simulated asperity degradation and wear depth is also verified by the experiment.

关键词： Asperity Contour Coupled evolution Piston/cylinder pair Wear process

Adsorptive property of Cu^(2+)-loaded montmorillonite clays for Escherichia coli K_(88) in vitro

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Journal of Environmental Sciences 2011年第11期23卷 1808-1815页

作者： Tong Guo shoujun Cao Rui Su Zhiqiang Li Ping Hu Zirong xu Beijing Vocational College of Agriculture Beijing 102442China College of Animal Science the Key Laboratory of Molecular Animal Nutrition Ministry of Education Zhejiang University Hangzhou 310029China College of Chemical Engineer and Environment North University of ChinaTaiyuan 030051China College Animal Science and Technology Institute of Grassland ScienceChina Agricultural UniversityBeijing 100093China

The adsorption properties of Cu 2＋ -loaded montmorillonite clays （MMT-Cu） for Escherichia coli K 88 as a function of time,bacteria concentrations,pH,ionic strength and temperature were *** results showed that the bacteria adsorption onto MMT-Cu surface reached equilibrium after 90 *** percentages of *** K 88 adsorbed onto the surfaces of MMT-Cu and montmorillonite clays （MMT） at equilibrium were 88.9% and 56.5%,*** electron microscopy revealed that a lot of *** K 88 adhered to the surface of *** zeta potential of MMT-Cu was relatively high as compared to that of *** adsorptive ability of MMT-Cu for *** K 88 was higher than that of MMT （P 0.05）.Moreover,pH,ionic strength and temperature produced a strong influence on the extent of *** K 88 adsorption to surface of MMT-Cu and *** mechanism of adsorption of *** onto MMT-Cu may involve electrostatic attraction and physiochemical properties of bacterial cell walls and minerals surfaces.

关键词： Cu2+-loaded montmorillonite clays adsorption Escherichia coli K88

不同抗性大麦品种对叶斑病的生理响应及主成分分析

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内蒙古民族大学学报（自然科学版） 2024年第3期39卷 6-13页

作者：苏日娜李建波刘志萍巴图马宇徐寿军内蒙古民族大学农学院内蒙古通辽028043 内蒙古自治区农牧业科学院内蒙古呼和浩特010031

以4个不同抗性的大麦品种作为材料,研究叶片感染麦根腐平脐蠕孢菌后,叶片组织内超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、苯丙氨酸解氨酶(PAL)、多酚氧化酶(PPO)的活性变化和丙二醛(MDA)、脯氨酸(Pro)的含量变化。结果... 详细信息

以4个不同抗性的大麦品种作为材料,研究叶片感染麦根腐平脐蠕孢菌后,叶片组织内超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、苯丙氨酸解氨酶(PAL)、多酚氧化酶(PPO)的活性变化和丙二醛(MDA)、脯氨酸(Pro)的含量变化。结果表明:MDA含量变化随接种时间的延长呈先升高后降低趋势,在2.0和40.0 d时分别出现峰值;而其他测定指标呈升高趋势,在40.0 d达到峰值。抗病品种SOD、POD、CAT、PAL、PPO活性和Pro含量均高于感病品种,而感病品种的MDA含量高于抗病品种。通过主成分分析发现,POD活性和Pro含量变化与接种时间均呈显著相关,其主成分累计贡献率为86.27%,能代表叶斑病菌侵染下各种大麦品种86%的生理信息,可用POD、Pro两个指标作为大麦抗叶斑病酶活变化的测定指标。

关键词：大麦叶斑病抗病性生理指标主成分分析

高分辨率薄层SCT扫描及诊断眼眶壁骨折98例

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中国中医药现代远程教育 2009年第5期7卷 109-110页

作者：陈家忠徐守军王培昌金丙智陈孝谦安徽省霍邱县第一人民医院安徽省霍邱县公安局法医室安徽医科大学临床医学院

目的探讨眶壁骨折HRCT诊断价值及其司法鉴定的应用价值。方法回顾性分析98例眶壁骨折的临床及CT诊断资料,所有病例均行眼眶横断位HRCT扫描,MPR、SSD重建,必要时加冠状位CT扫描。结果98例眶壁骨折中:眶内壁骨折77例,表现为眶内壁凹陷,骨... 详细信息

目的探讨眶壁骨折HRCT诊断价值及其司法鉴定的应用价值。方法回顾性分析98例眶壁骨折的临床及CT诊断资料,所有病例均行眼眶横断位HRCT扫描,MPR、SSD重建,必要时加冠状位CT扫描。结果98例眶壁骨折中:眶内壁骨折77例,表现为眶内壁凹陷,骨折片移位伴眼睑肿胀、眶内积气、筛窦积血、内直肌增粗、软组织及脂肪疝入;眶下壁骨折25例;眶外壁骨折17例;眶上壁骨折15例;视神经管壁骨折6例。结论眶壁骨折首选眼眶横断位HRCT扫描,对眶壁骨折的诊断具有重要价值,有助于临床治疗和预后的判断。

关键词：眼眶壁骨折 HRCT 扫描方法

Covalently derivatized NTA microarrays on porous silicon for multi-mode detection of His-tagged proteins

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Science China Chemistry 2011年第3期54卷 526-535页

作者： PEI Jia TANG YanChun xu Ning LU Wei XIAO shoujun LIU JianNing State Key Laboratory of Coordination Chemistry Nanjing National Laboratory for Microstructures School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 China Institute of Molecular Medicine Nanjing University Nanjing 210093 China

Porous silicon(PSi)was applied as a supporting substrate for stepwise covalent derivatization of undecylenic acid, N-hydroxysuccinimidyl ester(NHS-ester)and nitrilotriacetic acid(NTA).By taking the advantages of porous silicon as a supporting matrix such as high surface area to volume ratio,infrared transparency,porous semiconductors for laser desorption/ionization mass spectroscopy,and low fluorescence background,a multi-mode detection biochip prototype can be realized. We prepared such a protein microarray by spotting NTA microarray dots on NHS-ester derivatized PSi,converting the rest of chip area into poly(ethylene glycol)background,loading NiII,and finally affinity-binding histidine-tagged(His-tagged)*** the multi-mode analyses of infrared spectroscopy,X-ray photoelectron spectroscopy(XPS),atomic force microscopy(AFM),matrix-assisted laser desorption/ionization mass spectroscopy(MALDI-MS),and fluorescence scanning,two example proteins,His-tagged thioredoxin-urodilatin and His-tagged aprotinin,were well qualified and quantified.

关键词： porous silicon microarray multi-mode NTA His-tagged protein

Performance optimization for high speed axial piston pump considering cylinder block tilt

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Chinese Journal of Aeronautics 2023年第9期36卷 437-450页

作者： Haogong xu Junhui ZHANG shoujun ZHAO Junyuan CHEN Weidi HUANG Xiaochen HUANG Fei LYU Qi SU Bing xu State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310058China Beijing Institute of Precision Mechatronics and Controls Beijing 100076China Jiangsu Jinling Intelligent Manufacturing Research Institute Co LtdNanjing 210006China

Increasing the rotating speed is considered as an efficient approach to upgrade the power-to-weight ratio in an axial piston pump,but penalized by more leakage and more severe wear resulting from the adverse cylinder block *** studies mainly focused on the bearing characteristic of the valve plate/cylinder block pair,but the spline coupling also plays a key role in the undesired cylinder block tilt,which has been little studied.A theoretical model for the rotating assembly is presented to investigate the effect of the spline coupling length on the cylinder block tilt and the performance of the valve plate/cylinder block pair.A typical high-speed axial piston pump with the displacement of 5.2 mL/r at 10000 r/min was studied by simulation and *** shows that the optimal spline coupling length is one value increased by 2 mm from the original,bringing a remarkable leakage reduction under the high-speed condition by decreasing the cylinder block tilting *** experiment result matches well with the *** influences of the spline coupling on the cylinder block tilt and the leakage were demonstrated.

关键词： Cylinder block tilt High-speed axial piston pump Leakage Spline coupling Wear

不同基因型大麦碱胁迫下种子萌发及物质转化效率的差异性研究

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内蒙古民族大学学报（自然科学版） 2024年第1期39卷 26-31页

作者：范宏博李建波刘志萍巴图王聪徐寿军内蒙古民族大学农学院内蒙古通辽028043 内蒙古自治区饲用作物工程技术研究中心内蒙古通辽028000 内蒙古自治区农牧业科学院内蒙古呼和浩特010000

大麦具有较强的耐盐碱性,是盐碱地种植的先锋植物。不同基因型大麦间遗传特性均不相同,筛选耐盐碱性较强的大麦基因型对盐碱地改良具有重要意义。因此,以2个不同基因型大麦为材料,研究不同碱胁迫浓度(0、30、60、90、120 mmol/L)对大麦... 详细信息

大麦具有较强的耐盐碱性,是盐碱地种植的先锋植物。不同基因型大麦间遗传特性均不相同,筛选耐盐碱性较强的大麦基因型对盐碱地改良具有重要意义。因此,以2个不同基因型大麦为材料,研究不同碱胁迫浓度(0、30、60、90、120 mmol/L)对大麦萌发相关指标的影响。结果表明:随着碱浓度的增加,大麦所有萌发参数均呈显著降低趋势;随着碱浓度增加,根转化率、芽转化率、贮藏物质动员量与物质利用率呈逐渐降低趋势,且在高浓度下四川MS显著高于奇台9919。

关键词：大麦碱胁迫萌发指标物质转化利用效率