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Arabidopsis AGC protein kinases IREH1 and IRE3 control root skewing

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Journal of Genetics and Genomics 2019年第5期46卷 259-267页

作者： Xiaozhen Yue Zhiai Guo teng shi Lizhen Song Youfa Cheng Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

AGC protein kinases play important roles in plant growth and development.Several AGC kinases in Arabidopsis have been functionally characterized.However,the"AGC Other"subfamily,including IRE,IREH1,IRE3 and IRE4,has not been well understood.Here,we reported that ireh1 mutants displayed a root skewing phenotype,which can be enhanced by ire3 mutation.IREH1 and IRE3 were expressed in roots,consistent with their function in controlling root skewing.The fluorescence intensities of the microtubule marker KNpro:EGFP-MBD were decreased in ireh1,ire3 and ireh1 ire3 mutants compared to wild type.The microtubule arrangements in ireh1 and ireh1 ire3 mutants were also altered.IREH1 physically interacted with IRE3 in vitro and in planta.Thus,our findings demonstrate that IREH1 and IRE3 protein kinases play important roles in controlling root skewing,and maintaining microtubule network in Arabidopsis.

关键词： AGC kinases IREH1 IRE3 Root skewing Microtubule Arabidopsis

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基于锥角控制的下风向风力机功率调节策略

东南大学学报（自然科学版） 2024年第3期54卷 747-753页

作者：许波峰石腾李振肖航马远卓蔡新河海大学可再生能源发电技术教育部工程研究中心南京211100 河海大学江苏省风电机组结构工程研究中心南京211100 河海大学苏州研究院苏州215100 中国船舶集团海装风电股份有限公司重庆401123

针对中小型下风向风力机开展了功率调节策略研究.首先,对100 W下风向风力机进行了仿真计算和风洞实验,探究了下风向风力机的气动性能;然后,分析了风轮锥角对风力机输出功率和叶根载荷的影响机制,归纳出输出功率与锥角余弦值的三次方正相... 详细信息

针对中小型下风向风力机开展了功率调节策略研究.首先,对100 W下风向风力机进行了仿真计算和风洞实验,探究了下风向风力机的气动性能;然后,分析了风轮锥角对风力机输出功率和叶根载荷的影响机制,归纳出输出功率与锥角余弦值的三次方正相关,叶根载荷与锥角余弦值的平方正相关;最后,形成了一套基于锥角控制的下风向风力机功率主/被动调节策略.研究结果表明:采用主动调节策略可在超额定风速运行时有效控制风轮输出功率,并可使叶根载荷极值降低14.2%;较控制前,采用被动调节策略可使得在超额定风速运行时,输出功率与额定功率的平均偏差减小20.84 W.两种调节策略皆可实现超额定风速运行时下风向风力机输出功率的有效控制.

关键词：下风向风力机气动性能风轮锥角功率调节风洞实验

基于星点设计和响应面法的支架焊合件成形工艺优化

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塑性工程学报 2024年第3期31卷 50-59页

作者：滕士意王匀魏熹鸣杜道忠江苏大学机械工程学院江苏镇江212013 江苏城乡建设职业学院公用事业学院江苏常州213000

通过对焊合件的材料、结构及工艺进行分析,确定关键影响工序。对原冲压工艺方案进行多工序仿真模拟,并分析仿真结果,找寻产生开裂缺陷的原因。通过增加焊合件预成形设计和改变坯料的形状来改善工序间的载荷传递,建立以焊合件的最大减薄... 详细信息

通过对焊合件的材料、结构及工艺进行分析,确定关键影响工序。对原冲压工艺方案进行多工序仿真模拟,并分析仿真结果,找寻产生开裂缺陷的原因。通过增加焊合件预成形设计和改变坯料的形状来改善工序间的载荷传递,建立以焊合件的最大减薄率和最大回弹量为优化目标,以冲压速度、摩擦因数、压边力和模具间隙为设计变量的响应面模型,结合二阶响应面法与DesignExpert,采用星点设计试验方法对支架焊合件的工艺参数进行优化,确定最佳参数组合为:冲压速度1263mm·s^(-1)、摩擦因数0.15、压边力598k N、模具间隙4.55mm。试产结果表明:通过预成形方案与优化工艺参数可以解决支架焊合件开裂及回弹问题。

关键词：支架焊合件冲压成形 BR440高扩孔钢预成形星点设计响应面法

基于机器视觉的风电机组叶片多类型损伤检测方法研究

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太阳能学报 2024年第6期45卷 487-494页

作者：石腾许波峰陈鹏张金波刘加英河海大学江苏省输配电装备技术重点实验室常州213000 河海大学可再生能源发电技术教育部工程研究中心南京210000 上海交通大学海洋工程国家重点实验室上海200240 中国电建集团华东勘测设计研究院有限公司杭州311122

为更好地推动风电机组叶片运维技术智能化发展,基于机器视觉检测技术,提出一种风电机组叶片多类型损伤检测方法。首先对智能巡检无人机平台采集到的风电机组叶片图像进行图像灰度化、滤波增强、分割以及形态学处理,实现叶片损伤区域的识... 详细信息

为更好地推动风电机组叶片运维技术智能化发展,基于机器视觉检测技术,提出一种风电机组叶片多类型损伤检测方法。首先对智能巡检无人机平台采集到的风电机组叶片图像进行图像灰度化、滤波增强、分割以及形态学处理,实现叶片损伤区域的识别;然后基于连通域分析原理来获取叶片损伤区域的几何特征和灰度特征等参数信息,并依此设计出风电机组叶片损伤类型识别分类器;最后将检测算法和分类器融合于所设计的风电机组叶片损伤可视化检测系统。试验表明,该系统对于表皮脱落、涂层破损、砂眼、油污及裂纹等典型叶片损伤的平均检测准确率为90.4%。

关键词：风电机组叶片机器视觉损伤检测多类型损伤

Effects of Modified Inclusions and Precipitates Alloyed by Rare Earth Element on Corrosion and Impact Properties in Low Alloy Steel

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Acta Metallurgica Sinica(English Letters) 2022年第10期35卷 1719-1730页

作者： Xin-Tong Lian Long Chen Zeng-Wei Fan teng-shi Liu De-Xiang Xu Han Dong State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai200444China School of Materials Science and Engineering Shanghai UniversityShanghai200444China

This study has focused on the morphology and distribution of inclusions and precipitates modified by rare earth(RE)elements,which has a decisive influence on microstructure,corrosion properties and impact behaviors in Q355 low alloy steel.Characterized by the method of electrolytic extraction and ASPEX-scanning electron microscopy(ASPEX-SEM),small-sized spherical RE inclusions have been modified to replace elongated MnS and large-sized Al_(2)O_(3).Q355RE steel after RE alloying has lower corrosion rate and higher value ofα/γ,due to the formation of stable and dense rust layers.Q355RE steel also exhibits better resistance to fracture at low temperature,owing to the presence of RE modification to inclusions and its effects on reducing crack initiation and propagation.Nano-scale RE precipitates containing sulfur and phosphorus is observed along grain boundaries by transmission electron microscopy(TEM).The purification of grain boundaries by RE is beneficial to the improvement of corrosion and impact properties.

关键词： Rare earth element Inclusion Precipitate Q355 low alloy steel Corrosion resistance Impact toughness

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多断层复杂地质条件下条带充填开采工艺研究

煤炭工程 2024年第2期56卷 10-16页

作者：高鹏杜超杰石腾邵小平赵兵朝李龙清段明岸陕西涌鑫矿业有限责任公司沙梁煤矿陕西府谷719300 西安科技大学陕西西安710054

为优化沙梁煤矿多断层复杂地质条件下的开采布局,提高煤层采出率,提出在矿井一水平多断层切割区域布置短壁或异形条带充填开采工作面,通过多轮循环充填开采置换煤柱。研究表明:试验C135206工作面基载比J_(Z)<0.8、基采比J_(C)<9,条带采... 详细信息

为优化沙梁煤矿多断层复杂地质条件下的开采布局,提高煤层采出率,提出在矿井一水平多断层切割区域布置短壁或异形条带充填开采工作面,通过多轮循环充填开采置换煤柱。研究表明:试验C135206工作面基载比J_(Z)<0.8、基采比J_(C)<9,条带采宽处于直接顶板破断判据确定的极限跨距范围,工作面采用基于连采机掘采的“采6.6 m、留19.8 m”四轮顺序采充的三倍基准参数是适宜的;工作面条带巷道顶部敷设多通道导气管与注浆管的接顶方式可保证充填体充分接顶,砌块档墙有助于条带巷道两端墙体稳定性。研究为煤矿优化开采布局、提升矿井采出率提供了一条崭新思路。

关键词：断裂构造充填开采三倍基准采充工艺接顶工艺

Investigation on Electronic Structures and Spectra for the Substituted Fullerene C_(77)B^-

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Chinese Journal of Structural Chemistry 2006年第6期25卷 694-698页

作者： WU shi teng Qi-Wen Department of Chemistry Zhejiang University Hangzhou 310027 China

The structures and stabilities of all the 21 possible isomers for C77B^- based on C78 （C2v） were studied by the INDO series of methods. The most two stable geometries are C77B^-（10） and C77B^-（7）, where B（10） and B（7） are located at the apexes among two hexagons and a pentagon near the shortest axis of C78 （C2v）, and the former is more stable than the latter by 0.1902 eV. Based on the optimized geometries, the electronic spectra of the C77B^- isomers were investigated with the INDO/CIS method and the electronic transitions were assigned. The reason for the red-shift of the first absorption peaks for C77B^- compared with that of C78 （C2v） was discussed.

关键词： C77B^- electronic spectra INDO

Electronic Structures and Spectra of Isomers for C78O

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Chinese Journal of Chemical Physics 2006年第3期19卷 223-226页

作者： Qi-wen teng shi Wu Ming-hua Xie Department of Chemistry Zhejiang University Hangzhou 310027 China

半实验的 INDO 方法被用来学习电子结构和 C 78 O 基于有组 C 2v 的 C 78 。这计算能在 C 78 模仿一个另外的氧原子的位置并且预言异构体的分光镜的特征。C 78 O 是 73,78-C 78 有 epoxide 结构的 O 分子。增加的 73,78 契约在二等边六... 详细信息

半实验的 INDO 方法被用来学习电子结构和 C 78 O 基于有组 C 2v 的 C 78 。这计算能在 C 78 模仿一个另外的氧原子的位置并且预言异构体的分光镜的特征。C 78 O 是 73,78-C 78 有 epoxide 结构的 O 分子。增加的 73,78 契约在二等边六角形(66 ) 之间被定位并且被最短的 C 2 轴与组 C 2v 在 C 78 交叉。氧原子戏的原子 orbitals 在 73,78-C 78 O。与有组 C 2v, 的 C 78 相比在为 73,78-C 78 O 被观察。蓝移动的效果的原因被讨论，并且电子转变基于理论计算被分配。

关键词： C78O 电子光谱 INDO 异构体电子结构

Experimental and simulation research on hollow AZ31 magnesium alloy three-channel joint by hot extrusion forming with sand mandrel

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Journal of Magnesium and Alloys 2024年第1期12卷 98-109页

作者： shi Shengnan Wang Hongyu teng Fei Jiang Lei Sun Juncai Sun Jie Zhang Shunhu Transportation Engineering College Dalian Maritime UniversityDalianLiaoning 106026China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyangLiaoning 110819China Shagang School of Iron and Steel Soochow UniversitySuzhouJiangsu 215021China

Magnesium alloy is one of the lightest metal structural materials.The weight is further reduced through the hollow structure.However,the hollow structure is easily damaged during processing.In order to maintain the hollow structure and to transfer the stresses during the high temperature deformation,the sand mandrel is proposed.In this paper,the hollow AZ31 magnesium alloy three-channel joint is studied by hot extrusion forming.Sand as one of solid granule medium is used to fill the hollow magnesium alloy.The extrusion temperatures are 230℃ and 300℃,respectively.The process parameters(die angle,temperature,bottom thickness,sidewall thickness,edge-to-middle ratio in bottom,bottom shape)of the hollow magnesium alloy are analyzed based on the results of experiments and the finite element method.The results are shown that the formability of the hollow magnesium alloy will be much better when the ratio of sidewall thickness to the bottom thickness is 1:1.5.Also when edge-to-middle ratio in bottom is about 1:1.5,a better forming product can be received.The best bottom shape in these experiments will be convex based on the forming results.The grain will be refined obviously after the extrusion.Also the microstructures will be shown as streamlines.And these lines will be well agreement with the mold in the corner.

关键词： AZ31 magnesium alloy Three-channel joint Sand Experiments and the finite element Die angle