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Dynamic behavior of aero-engine rotor with fusing design suffering blade off

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Chinese Journal of Aeronautics 2017年第3期30卷 918-931页

作者： cun wang Dayi ZHANG Yanhong MA Zhichao LIANG Jie HONG School of Energy and Power Engineering Beihang University Beijing 100083 China

Fan blade off（FBO） from a running turbofan rotor will introduce sudden unbalance into the dynamical system,which will lead to the rub-impact,the asymmetry of rotor and a series of interesting dynamic *** paper first presents a theoretical study on the response excited by sudden *** results reveal that the reaction force of the bearing located near the fan could always reach a very high value which may lead to the crush of ball,journal sticking,high stress on the other components and some other failures to endanger the safety of engine in FBO ***,the dynamic influence of a safety design named ‘‘fusing＂ is investigated by mechanism ***,an explicit FBO model is established to simulate the FBO event,and evaluate the effectiveness and potential dynamic influence of fusing *** results show that the fusing design could reduce the vibration amplitude of rotor,the reaction force on most bearings and loads on mounts,but the sudden change of support stiffness induced by fusing could produce an impact effect which will couple with the influence of sudden ***,the implementation of the design should be considered carefully with optimized parameters in actual aero-engine.

关键词： Aero-engine Blade off Finite element analysis Fusing design Rotor dynamics Sudden unbalance

MicroRNAs in hypoxia and acidic tumor microenvironment

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Chinese Science Bulletin 2014年第19期59卷 2223-2231页

作者： Haojie Jin Ning wang cun wang Wenxin Qin State Key Laboratory of Oncogenes and Related Genes Shanghai Cancer Institute Renji Hospital Shanghai Jiao Tong University School of Medicine

MicroRNAs(miRNAs)are short non-coding RNAs of*22 nucleotides that play important roles in diverse biological functions including tumor adaption,survival,and metabolism homeostasis in specific tumor microenvironment,such as hypoxia and low *** is a unique physiological condition during tumor development and progression,which alters a set of hypoxia-mediated miRNAs *** hypoxia-mediated miRNAs may exhibit either oncogenic activities or tumor-suppressive activities,mainly through the regulation of cellular pathways including hypoxia-inducible factors *** tumor microenvironment develops in hypoxic solid tumors due to a combination of predominant glycolytic metabolism(Warburg effect)and poor fluid clearance due to incomplete *** this review,we summarize our current understanding of the emerging roles of miRNAs in hypoxia and acidic tumor microenvironment.

关键词：肿瘤发生 microRNA 缺氧症微环境酸性 miRNA 低氧诱导因子非编码RNA

结合岗位实施标准目录构建型号产品标准体系研究实践

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航天标准化 2024年第1期 10-16页

作者：庄蓓蓓朱艳芸王寸北京航天时代光电科技有限公司北京100094

简要介绍某公司型谱产品标准体系构建情况,尝试与岗位实施标准目录结合,探索深度融合,采用新的层级划分方式构建具体型号产品标准体系,以提高标准体系实施有效性。重点分析型号产品标准体系的构建思路,给出了技术标准体系框架及标准明... 详细信息

简要介绍某公司型谱产品标准体系构建情况,尝试与岗位实施标准目录结合,探索深度融合,采用新的层级划分方式构建具体型号产品标准体系,以提高标准体系实施有效性。重点分析型号产品标准体系的构建思路,给出了技术标准体系框架及标准明细表示例,对标准体系实施提出建议。

关键词：型号产品标准体系型号标准化体系构建岗位实施标准目录

Microwave-prompted Rapid and Efficient Synthesis of Diacyl Thiosemicarbazides and Semicarbazides in Solvent and Catalyst Free Condition

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Chinese Chemical Letters 2005年第8期16卷 1027-1030页

作者： Xi cun wang Zheng Jun QUAN Man Gang wang Zheng LI Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070

Eighteen 1-aroyl-4-（2-iodobenzoyl）thiosemicarbazides and corresponding semicarbazides were synthesized in excellent yield under microwave irradiation in solvent and catalyst free condition.

关键词： Microwave irradiation 1,4-diaroyl thiosemicarbazides 1,4-diaroyl semicarbazides,solvent-free synthesis.

Development and application of a multi-graphite electrode DC plasma tundish heating

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Journal of Iron and Steel Research International 2022年第11期29卷 1800-1806页

作者： Yong wang cun wang Meng-jing Zhao Jing-xin Song Shu-feng Yang Jing-she Li School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Aobang Advanced Materials Co. Ltd.Beijing 101400China Meishan I&S Co.of Baowu Group Nanjing 210039JiangsuChina

The world’s first three-graphite electrode direct current(DC)plasma heating system(2500 kW)was successfully put into production on the 50-t tundish of a two-strand slab *** single metallic torch plasma tundish heaters were *** addition,the induction heating system was also *** three-graphite electrode DC plasma tundish heating(PTH)system does not require any electrode to be fitted to the *** electrodes can be used to realize uniform and fast heating of the six-strand *** with high power can effectively eliminate the steep temperature drop of the molten steel in the tundish during ladle *** system has turned out to be very reliable,simple,and *** heating rate is high within 0.5 to 2.0℃/*** heats with ultra-low superheat(2.6-11.0℃)were observed,and the molten steels were successfully cast by the powerful heating capacity and good control performance of the system in the practical *** can be concluded that continuous casting with superheat of 5-10℃in the tundish was fully realistic with PTH.

关键词： Plasma tundish heating Superheat Center segregation Graphite electrode

GTPase ROP6 negatively modulates phosphate deficiency through inhibition of PHT1;1 and PHT1;4 in Arabidopsis thaliana

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Journal of Integrative Plant Biology 2021年第10期63卷 1775-1786页

作者： Huiling Gao Tian wang Yanting Zhang Lili Li Chuanqing wang Shiyuan Guo Tianqi Zhang cun wang State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences Northwest A&F UniversityYangling 712100China

Phosphorus,an essential macroelement for plant growth and development,is a major limiting factor for sustainable crop *** Rho of plant(ROP)GTPase is involved in regulating multiple signal transduction processes in plants,but potentially including the phosphate deficiency signaling pathway remains ***,we identified that the rop6 mutant exhibited a dramatic tolerant phenotype under Pi-deficient conditions,with higher phosphate accumulation and lower anthocyanin *** contrast,the rop6 mutant was more sensitive to arsenate(As(V))toxicity,the analog of *** analysis displayed that the ROP6 protein was rapidly degraded through ubiquitin/26S proteasome pathway under Pi-deficient *** addition,pull-down assay using GST-RIC1 demonstrated that the ROP6 activity was decreased obviously under Pi-deficient ***,protein-protein interaction and two-voltage clamping assays demonstrated that ROP6 physically interacted with and inhibited the key phosphate uptake transporters PHT1;1 and PHT1;4 in vitro and in ***,genetic analysis showed that ROP6 functioned upstream of PHT1;1 and PHT1;***,we conclude that GTPase ROP6 modulates the uptake of phosphate by inhibiting the activities of PHT1;1 and PHT1;4 in Arabidopsis.

关键词： Arabidopsis As(V) phosphate deficiency PHT1 1,PHT1 4,ROP6

SolidWorks在平面四杆机构教学中的应用

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内燃机与配件 2024年第11期 144-146页

作者：王村伟戴文博皋龙成江苏省常州技师学院江苏常州213022

本文总结了SolidWorks软件在平面四杆机构教学中的应用,探讨了“自上而下”设计思想在平面机构虚拟模型创建中的运用,结合Motion分析功能对机构进行运动仿真及急回特性分析。教学实践表明,借助SolidWorks软件教学能促进学生深入理解平... 详细信息

本文总结了SolidWorks软件在平面四杆机构教学中的应用,探讨了“自上而下”设计思想在平面机构虚拟模型创建中的运用,结合Motion分析功能对机构进行运动仿真及急回特性分析。教学实践表明,借助SolidWorks软件教学能促进学生深入理解平面机构,提升课堂教学效果。

关键词： SolidWorks 平面四杆机构 Motion运动仿真

Gγ subunit AT1/GS3-the“code”of alkaline tolerance in main graminaceous crops

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Stress Biology 2023年第1期3卷 111-113页

作者： Chuanfeng Ju cun wang State Key Laboratory of Crop Stress Biology for Arid Areas College of Life SciencesNorthwest Agriculture&Forestry UniversityYangling 712100ShaanxiChina Institute of Future Agriculture Northwest Agriculture&Forestry UniversityYangling 712100ShaanxiChina

This brief article highlights the results of Zhang et al.(Science 379,eade8416,2023),who recently found that the Gγ subunit AT1/GS3 contributes to alkaline tolerance in several main monocots crops,and revealed the molecular mechanism of AT1/GS3-mediated response to alkaline stress in plants,which involves regulating H_(2)O_(2) levels by inhibiting the phosphorylation of aquaporin PIP2s.

关键词： Alkalinity tolerance Gγprotein Alkaline tolerance 1(AT1) Aquaporins

“共生理论”视域下依托医学院校构建“体医融合”模式的研究

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体育科技文献通报 2024年第5期32卷 183-186页

作者：马亚莉王村纪金明杨萌菏泽医学专科学校山东菏泽274000 上海体育大学上海200438 鱼台县唐马镇中心学校山东济宁272300 菏泽市实验中学山东菏泽274000

随着健康中国战略的实施,体医融合成为建设健康中国的关键策略。基于对体医融合的现实审视,结果发现,国内关于体医融合模式的研究尚处于初级阶段,现行模式更多的是照搬西方经验,对我国实际国情认识不足,本土化程度低,导致多数经验难以... 详细信息

随着健康中国战略的实施,体医融合成为建设健康中国的关键策略。基于对体医融合的现实审视,结果发现,国内关于体医融合模式的研究尚处于初级阶段,现行模式更多的是照搬西方经验,对我国实际国情认识不足,本土化程度低,导致多数经验难以落地。本文从我国现实出发,将“共生理论”援引至体医融合研究,以医学院校为载体,尝试构建“共生理论”视域下依托医学院校的体医融合模式,主要阐述了该模式的构建思路、模式框架、实施流程等,旨在依托医学院校构建操作性强、推广性强的中国特色体医融合模式,进一步推进健康中国战略的实施。

关键词：体医融合共生理论医学院校模式健康促进