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Propulsion and Power Research 2012年第1期1卷 71-77页

作者： guangchao lin Chaolin Wu Wei Zhang Zhihai Kou Dawei Peng Liaoning Key Laboratory of Advanced Technology for Aeronautical Propulsion System Aeroengine and Energy Engineering CollegeShenyang Aerospace UniversityShenyangLiaoning 110136China

In order to study the effect of cross-flow directions of an internal coolant on film cooling performance,the discharge coefficients and film cooling effectiveness with one inlet and double outlet hole injections were *** numerical results show that two different cross-flow directions of the coolant cause the same decrease in the discharge coefficients as that in the case of supplying coolant by a *** different proportion of the mass flow out of the two outlets of the film hole results in different values of the film cooling effectiveness for three different cases of coolant *** film cooling effectiveness is the highest for the case of supplying coolant by the *** a lower blowing ratio of 1.0,the film cooling effectiveness with coolant injection from the right entrance of the passage is higher than that from the left entrance of the *** a higher blowing ratio of 2.0,the opposite result is found.

关键词： Aerospace propulsion system Turbine blade Film cooling Cross-flow Numerical simulation

青海湖2种高寒嵩草湿草甸湿地生态系统水热通量比较

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水土保持学报 2017年第5期31卷 176-182页

作者：吴方涛曹生奎曹广超汉光昭林阳阳成淑艳青海师范大学生命与地理科学学院西宁810008 青海师范大学青海省自然地理与环境过程重点实验室西宁810008

基于涡度相关技术,研究了2015年青海湖2种高寒嵩草湿草甸湿地生态系统水热通量的特征。结果表明:(1)2015年青海湖高寒藏嵩草和小嵩草湿草甸湿地生态系统日平均水汽通量分别为1.74,0.99mm,年水汽通量分别为633.3,362.1mm。(2)青海湖2种... 详细信息

基于涡度相关技术,研究了2015年青海湖2种高寒嵩草湿草甸湿地生态系统水热通量的特征。结果表明:(1)2015年青海湖高寒藏嵩草和小嵩草湿草甸湿地生态系统日平均水汽通量分别为1.74,0.99mm,年水汽通量分别为633.3,362.1mm。(2)青海湖2种高寒嵩草湿草甸湿地生态系统感热、潜热和净辐射日变化均呈单峰曲线,感热和潜热月平均日变化最大值出现的时间均晚于净辐射。藏嵩草湿草甸湿地生态系统感热月均日变化最大值最大为179.06W/m^2,最小为46.02W/m^2;潜热最大为312.55W/m^2,最小为30.58 W/m^2;小嵩草湿草甸湿地生态系统感热月均日变化最大值最大为161.86 W/m^2,最小为31.60 W/m^2;潜热最大为215.44 W/m^2;最小为14.08 W/m^2。(3)通过波文比分析发现,2种高寒嵩草湿草甸湿地生态系统生长季能量分配以潜热为主,非生长季小嵩草湿草甸湿地生态系统能量分配以感热为主,藏嵩草湿草甸湿地生态系统则较为复杂。藏嵩草湿草甸湿地生态系统全年能量平衡率为0.82,小嵩草湿草甸湿地生态系统为0.89,增加土壤热通量项能改善能量平衡状况。

关键词：高寒嵩草湿草甸湿地感热通量潜热通量水汽通量能量平衡

Filtration performance and modeling of granular bed for dust removal from coal pyrolytic vapors

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Chinese Journal of Chemical Engineering 2024年第1期65卷 35-42页

作者： Shuaiqiang Yang lin Du guangchao Ding Runguo Liu Wenli Song Songgeng Li State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Petrochemical Engineering Yan’an Vocational and Technical CollegeYan’an 716000China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China

Dust removal from pyrolytic vapors at high temperatures is an obstacle to the industrialization of the coal pyrolysis *** this work,a granular bed with expanded perlites as filtration media was designed and integrated into a 10 t·d^(–1)coal pyrolysis *** testing results showed that around 97.56%dust collection efficiency was *** a result,dust content in tar was significantly *** pressure drop of the granular bed maintained in the range of 356 Pa to 489 *** dust size in the effluent after filtration exhibited a bimodal distribution,which was attributed to the heterogeneity of the dust *** effects of filtration bed on pyrolytic product yields were also discussed.A modified filtration model based on the macroscopic phenomenological theory was proposed to describe the performance of the granular *** computation results were well agreed with the experimental data.

关键词： Granular bed filtration Dust removal Pyrolysis Filtration Fixed-bed

A quantitative study on source rocks in the western Leidong depression, northern South China Sea

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Energy Geoscience 2021年第1期2卷 73-82页

作者： Tao Wu Lie Li Wentuo Li Yonghao Gai Yu Qiu guangchao Pan lin Chen CNOOC China Ltd. Zhanjiang BranchZhanjiang524057China

The Leidong depression is one of the secondary tectonic units and the least explored part of the Beibu Gulf Basin,northern South China *** activities in the basin reveal that the Middle Eocene deposition was controlled by NE-SW-striking faults and the second member of the Eocene Liushagang Formation(LII)consists of high-quality source *** nature and origin of this depression has remained enigmatic due to the complex fault structures as compared to those in other *** is important to identify whether LII occurs in the Leidong depression in the context of *** we analyze available geological,seismic,and drilling data of the depression and the controlling factors among faults,deposition,lithology,and hydrocarbon distribution in the *** such as stress fracture analysis,fault growth index analysis,and sedimentary strata characterization were used to construct an Eocene sedimentary model controlled by NW-SE striking *** model with integrated seismic profile characteristics comparison and velocity analysis results was then used to determine whether the Eocene strata in the west of the depression contain the high-quality source rocks that are widely distributed elsewhere in the ***,calculations were performed to quantify the intensity of hydrocarbon generation and amount of hydrocarbon generated in the depression based on available data of the source rocks,including their distribution and *** results confirmed the assumption that the Middle Eocene strata in the Leidong depression were controlled by NW-SE strike-slip faults and contain high-quality LII source rocks,thus providing an important foundation for future exploration.

关键词： Source rock quantization Fault-controlling depression Western Leidong depression Beibu Gulf basin

Fine-tune chiroptical activity in discrete chiral Au nanorods

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Nano Research 2022年第7期15卷 6574-6581页

作者： guangchao Zheng Sulin Jiao Wei Zhang Shenli Wang Qinghua Zhang lin Gu Weixiang Ye Junjun Li Xiaochen Ren Zhicheng Zhang Kwok-yin Wong School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Chemical Biology and Drug Discovery Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityKowloonHong KongChina Institute of Applied Physics and Computational Mathematics Beijing 100088China School of Food Science and Engineering Henan University of TechnologyZhengzhou 450001China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Applied Physics School of ScienceHainan UniversityHaikou 570228China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China

Accurate researches on the surface plasmon resonance(SPR)-based applications of chiral plasmonic metal nanoparticles(NPs)still remain a great ***,a series of chiral plasmonic metal NPs,e.g.,chiral Au nanorods(c-Au NRs),c-Au@Ag core–shell,and c-Au@TiO_(2) core–shell NRs,with different chiroptical activities have been *** circular dichroism(PCD)bands of c-Au NRs can be precisely tailored by tuning the longitudinal SPR(LSPR)and amount of Au NRs as ***,a shift of PCD bands within ultraviolet–visible–near infrared ray(UV–vis–NIR)region can also be achieved through the functionalization of a shell of another metal or ***,chirality transfer from c-Au core to Ag shell leads to new PCD bands at the near-UV *** tuning of PCD bands and chirality transfer are confirmed by our developed theoretical *** chiral Au NRs-based chiral plasmonic nanomaterials with tunable chiroptical activities will be helpful to understand the structure-direct PCD and to extend circularly polarized-based applications.

关键词： chiral Au nanorods(c-Au NRs) surface plasmon resonance optical activity chirality transfer

trans-2-Enoyl-CoA Reductase Tecr-Driven Lipid Metabolism in Endothelial Cells Protects against Transcytosis to Maintain Blood-Brain Barrier Homeostasis

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Research 2022年第3期2022卷 75-89页

作者： Jinxuan Wang Jianxiong Xu guangchao Zang Tao Zhang Qi Wu Hongping Zhang Yidan Chen Yi Wang Weixi Qin Shuang Zhao Erdai Qin Juhui Qiu Xiaojuan Zhang lin Wen Yeqi Wang Guixue Wang Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China Institute of Life Science Laboratory of Tissue and Cell BiologyLab Teaching&Management CenterChongqing Medical UniversityChongqing 400016China Chongqing Key Laboratory of Nano/Micro Composite Material and Device School of Metallurgy and Materials EngineeringChongqing University of Science and TechnologyChongqing 401331China College of Basic Medical Sciences Chongqing Medical UniversityChongqing 400016China

The transport and metabolism of lipids in cerebrovascular endothelial cells(ECs)have been hypothesized to regulate blood-brain barrier(BBB)maturation and ***-chain polyunsaturated fatty acids(LCPUFAs)as the important lipids components of cell membranes are essential for the development and function of BBB,but the direct links of lipid metabolism and ECs barrier function remain to be ***,we comprehensively characterize the transcriptomic phenotype of developmental cerebrovascular ECs in single-cell resolution and firstly find that trans-2-enoyl-CoA reductase(Tecr),a verylong-chain fatty acid synthesis,is highly expressed during barriergenesis and decreased after BBB ***-specific knockout of Tecr compromises angiogenesis due to delayed vascular ***,EC-specific deletion of Tecr loss restrictive quality of vascular permeability from neonatal stages to adulthood,with high levels of transcytosis,but maintains the vascular tight ***,lipidomic analysis shows that the expression of Tecr in ECs is associated with the containing of omega-3 fatty acids,which directly suppresses caveolae vesicles *** results reveal a protective role for Tecr in BBB integrity and suggest that Tecr as a novel therapeutic target in the central nervous system(CNS)diseases associated with BBB dysfunction.

关键词： metabolism barrier Blood

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电脉冲除冰系统的结构力学性能分析

北京航空航天大学学报 2016年第10期42卷 2069-2074页

作者：李广超何江林贵平北京航空航天大学航空科学与工程学院北京100083 中国空间技术研究院北京100081

电脉冲除冰(EIDI)作为一种电动-机械式除冰系统,具有广阔的应用前景。本文采用线圈和金属平板组成的电脉冲系统作为EIDI结构动力学模型的研究对象,基于有限元分析软件MSC/NASTRAN,建立了一套针对典型平板-线圈结构的EIDI系统结构动力学... 详细信息

电脉冲除冰(EIDI)作为一种电动-机械式除冰系统,具有广阔的应用前景。本文采用线圈和金属平板组成的电脉冲系统作为EIDI结构动力学模型的研究对象,基于有限元分析软件MSC/NASTRAN,建立了一套针对典型平板-线圈结构的EIDI系统结构动力学仿真模型,研究了模型的固有特性(模态与频率)与时域响应分析,并开展了仿真模型的实验验证。研究了基于模型的EIDI系统结构动力学特性,重点关注最大应变和位移在空间的分布规律,并讨论了电容、电压等放电参数的影响。研究表明,电脉冲作用下,平板最大位移分布特性近似"马鞍型",提升电容和电压可以增大脉冲力峰值和结构变形量,同时减小固定位置处的应变。

关键词：飞机防冰除冰电脉冲除冰(EIDI) 有限元分析模态分析应力-应变

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基于扫描点云的叶片特征型线分析方法及实现

机械工程学报 2022年第17期58卷 41-48页

作者：丁建军卢光超孙林蒋庄德西安交通大学机械工程学院西安710049 西安交通大学机械制造系统工程国家重点实验室西安710049 华中科技大学数字制造装备与技术国家重点实验室武汉430074

针对航空发动机叶片光学测量中海量点云的型线分析处理速度慢和形状特征差的问题,提出了一种基于型面重建的叶片测量点云型线精确分析算法。该算法基于光学测量可覆盖整个叶身的优势,包括点云预处理、型线提取和型线分析若干步骤完成型... 详细信息

针对航空发动机叶片光学测量中海量点云的型线分析处理速度慢和形状特征差的问题,提出了一种基于型面重建的叶片测量点云型线精确分析算法。该算法基于光学测量可覆盖整个叶身的优势,包括点云预处理、型线提取和型线分析若干步骤完成型线的精确分析。首先,根据叶片设计规范对点云进行叶型高度的切割,然后利用统计学方法对测量点云进行快速滤波处理,并采用八叉树的数据结构对点云进行体素下采样。对于上述预处理后的点云,利用区域增长法进行型面重建,获取叶型轮廓数据。最后,通过型线分析方法实现叶片型线特征参数的计算和轮廓度误差的优化求解。

关键词：航空叶片点云型线提取叶型分析

Parameter Optimization via Orthogonal Experiment to Improve Accuracy of Metakaolin Ceramics Fabricated by Direct Ink Writing

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Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers) 2023年第4期2卷 43-58页

作者： Ming Wu Fuchu Liu Yuxiao lin Miao Wang Shilin Zhou Chi Zhang Yingpeng Mu guangchao Han Liang Hao School of Mechanical Engineering and Electronic Information China University of GeosciencesWuhan430074China Shenzhen Research Institute China University of GeosciencesShenzhen518057China Advanced Manufacturing Center China University of GeosciencesWuhan430074China Gemmological Institute China University of GeosciencesWuhan430074China

Kaolin/metakaolin-insulating ceramic components fabricated using direct ink writing(DIW)have important ap-plication prospects in architecture and *** accuracy of the entire process including the forming and sintering accuracy of ceramics greatly limits the application scope,and high-accuracy ceramic samples can meet the usage requirements in many *** orthogonal experiment was designed with four process parame-ters,including nozzle internal diameter,filling rate,printing layer height/nozzle internal diameter,and printing speed,to investigate the evolution of the DIW forming accuracy,sintering shrinkage rate and surface roughness of metakaolin-based ceramics with different process *** influence of each process parameter and its mechanism were analyzed to obtain the DIW parameters for high-accuracy metakaolin *** linear regression models between the dimensional change rate,surface roughness,and process parameters of the ceramic samples were established and *** results show that comprehensively considering the forming accuracy of the ceramic green bodies,sintering shrinkage rate and surface roughness,the optimal DIW process parameters were a 0.41 mm nozzle internal diameter,100%filling rate,50%printing layer height/nozzle inter-nal diameter,and a 15 mm/s printing *** linear regression models were developed for the process parameters and the printing accuracy,sintering shrinkage rate and surface *** error rates between the theoretical results obtained by substituting the optimal process parameters into the multiple linear regression models and the actual results obtained by printing the samples with the optimal parameters were extremely small,all less than 0.8%.This verified the correctness and predictability of the multiple linear regression *** work provides a reference basis for rapid fabrication of high-accuracy ceramics via DIW and accuracy prediction with different process parameter

关键词： Direct ink writing Metakaolin ceramics Accuracy Multiple linear regression models

Plant multiscale networks:charting plant connectivity by multi-level analysis and imaging techniques

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Science China(Life Sciences) 2021年第9期64卷 1392-1422页

作者： Xi Zhang Yi Man Xiaohong Zhuang Jinbo Shen Yi Zhang Yaning Cui Meng Yu Jingjing Xing guangchao Wang Na Lian Zijian Hu lingyu Ma Weiwei Shen Shunyao Yang Huimin Xu Jiahui Bian Yanping Jing Xiaojuan Li Ruili Li Tonglin Mao Yuling Jiao Sodmergen Haiyun Ren Jinxing lin Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry UniversityBeijing 100083China College of Biological Sciences and Biotechnology Beijing Forestry UniversityBeijing 100083China School of Life Sciences Centre for Cell&Developmental Biology and State Key Laboratory of AgrobiotechnologyThe Chinese University of Hong KongHong Kong 999077China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Key Laboratory of Cell Proliferation and Regulation Biology Ministry of EducationCollege of Life ScienceBeijing Normal UniversityBeijing 100875China Key Laboratory of Plant Stress Biology School of Life SciencesHenan UniversityKaifeng 457004China College of Biological Sciences China Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Physiology and Biochemistry Department of Plant SciencesCollege of Biological SciencesChina Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of Sciencesand National Center for Plant Gene ResearchBeijing 100101China Key Laboratory of Ministry of Education for Cell Proliferation and Differentiation College of Life SciencesPeking UniversityBeijing 100871China

In multicellular and even single-celled organisms,individual components are interconnected at multiscale levels to produce enormously complex biological networks that help these systems maintain homeostasis for development and environmental *** biology studies initially adopted network analysis to explore how relationships between individual components give rise to complex biological *** analysis has been applied to dissect the complex connectivity of mammalian brains across different scales in time and space in The Human Brain *** plant science,network analysis has similarly been applied to study the connectivity of plant components at the molecular,subcellular,cellular,organic,and organism *** of these multiscale networks contributes to our understanding of how genotype determines *** this review,we summarized the theoretical framework of plant multiscale networks and introduced studies investigating plant networks by various experimental and computational *** next discussed the currently available analytic methodologies and multi-level imaging techniques used to map multiscale networks in ***,we highlighted some of the technical challenges and key questions remaining to be addressed in this emerging field.

关键词： multiscale network connectivity cytoskeleton membrane contact site organelle interaction multicellularity connectome cytoarchitecture topological analysis multi-level imaging techniques

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