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在滇高校留学生“讲好中国故事”的关键性问题探究

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红河学院学报 2024年第05期22卷 87-90页

作者：罗宗全云南民族大学校学术委员会

高校留学生“讲好中国故事”是来华留学生教育全过程育人的体现，也是云南教育对外开放高质量发展和打造“留学中国学在云南”教育品牌的要求。当前，在滇高校留学生“讲好中国故事”的云南实践，需要解决四个方面的问题：一是如何通过... 详细信息

高校留学生“讲好中国故事”是来华留学生教育全过程育人的体现，也是云南教育对外开放高质量发展和打造“留学中国学在云南”教育品牌的要求。当前，在滇高校留学生“讲好中国故事”的云南实践，需要解决四个方面的问题：一是如何通过人才培养目标与专业培养方案的协同，解决在滇高校留学生“讲好中国故事”的理念问题；二是如何通过强化国情、省情教育的“趋同化”管理，解决在滇高校向留学生“讲好中国故事”的问题；三是如何通过加强思想教育，解决在滇高校留学生我想“讲好中国故事”的意识问题；四是如何通过整合、丰富传播载体，解决在滇高校留学生“讲好中国故事”的传播媒介问题。

关键词：在滇高校留学生 “讲好中国故事” 关键性问题

Mars orbit insertion via ballistic capture and aerobraking

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Astrodynamics 2021年第2期5卷 167-181页

作者： zong-Fu luo Francesco Topputo School of Astronomy and Space Science Nanjing UniversityNanjing210023China School of Systems Science and Engineering Sun Yat-sen UniversityGuangzhou510006China Department of Aerospace Science and Technology Politecnico di MilanoMilano20156Italy

A novel Mars orbit insertion strategy that combines ballistic capture and aerobraking is *** ballistic capture orbits that neglect the aerodynamics are first generated,and are distilled from properly computed stable and unstable sets by using a pre-established method.A small periapsis maneuver is implemented at the first close encounter to better submit a post-capture orbit to the aerobraking *** adhoc patching point marks the transition from ballistic capture to aerobraking,from which an exponential model simulating the Martian atmosphere and a box-wing satellite configuration are considered.A series of apoapsis trim maneuvers are then computed by targeting a prescribed pericenter dynamic *** aerobraking duration is then estimated using a simplified two-body *** angle tuning cancels the inclination deflections owing to out-of-plane perturbation from the Sun.A philosophy combining in-plane and out-of-plane dynamics is proposed to simultaneously achieve the required semi-major axis and *** simulations indicate that the developed method is more efficient in terms of the fuel consumption,insertion safety,and flexibility when compared with other state-of-the-art insertion strategies.

关键词： ballistic capture aerobraking Mars orbit insertion

Blended skip entry guidance for low-lifting lunar return vehicles

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Acta Mechanica Sinica 2014年第6期30卷 973-982页

作者： zong-Fu luo Hong-Bo Zhang Guo-Jian Tang College of Aerospace Science and Engineering National University of Defense Technology

A skip entry guidance algorithm blending numerical predictor-corrector and nominal trajectory tracking is presented for lunar return *** guidance is decoupled into longitudinal and lateral channels.A piecewise bank-vs-energy magnitude profile and a sign profile are adopted in the skip phase.A magnitude parameter is used to adjust the predicted downrange,and a pseudo-crossrange at the beginning of the final phase is selected as the lateral control *** biases of both channels are nullified by a false position iteration *** on-line estimation and modeling method is introduced to compensate for aerodynamic and atmospheric uncertainties.A nominal trajectory for the final phase is generated based on actual reenter conditions,and the obtained nominal trajectory is tracked by a linear feedback law.A lateral corridor is used to manage the lateral *** proposed guidance algorithm is assessed using three-degree-of-freedom Monte Carlo analyses,and the results show a satisfactory and robust performance under highly stressful dispersions.

关键词： Skip entry guidance Numerical predictorcorrector Low-lifting vehicle Lunar return mission Bank profile

Interfacial microstructure and mechanical properties of stainless steel clad plate prepared by vacuum hot rolling

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Journal of Iron and Steel Research International 2018年第7期25卷 732-738页

作者： Jun Jiang Hua Ding zong-an luo Guang-ming Xie School of Materials and Metallurgy Northeastern University Shenyang 110819 Liaoning China Shenyang Aircraft Corporation Shenyang 110034 Liaoning China State Key Laboratory of Roiling and Automation Northeastern University Shenyang 110819 Liaoning China

A stainless steel clad plate composed of stainless steel and carbon steel was prepared by vacuum hot rolling process, and its microstructure, especially the bonding interface, was evaluated using an optical microscope, a scanning electron micro- scope and a transmission electron microscope （TEM）. The corresponding mechanical properties were also assessed by means of hardness and shear tests. The results showed a bonding interface formed between stainless steel and carbon steel, which was relatively straight in macroscope but serrated in microscope. Decarburization layer and carbon-enriched layer were distinguished at the side of carbon steel and stainless steel near the interface, respectively, which should be related to diffusion of carbon and alloying elements. The carbon-enriched layer could also be identified as a recombination region, whose microstructure was mainly recognized as martensite by TEM. Consequently, the hardness was the highest at this region. Furthermore, the result of shear test at the bonding interface showed that the shear strength was 395 MPa and the fracture mode was dominated as ductile fracture, indicating the bonding interface with good quality.

关键词： Stainless steel clad plate Vacuum hot rolling Interface microstructure Mechanical property

Microstructure and toughness of thick-gauge pipeline steel joint via double-sided friction stir welding combined with preheating

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International Journal of Minerals,Metallurgy and Materials 2023年第4期30卷 724-733页

作者： Guangming Xie Ruihai Duan Yuqian Wang zong’an luo Guodong Wang State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

Fusion welding easily causes microstructural coarsening in the heat-affected zone(HAZ) of a thick-gauge pipeline steel joint. This is most significant in the inter-critically coarse-grained HAZ(ICCGHAZ), which considerably deteriorates the toughness of the joint. In the present work, 11-mm thick pipeline steel was joined by preheating and double-sided friction stir welding(FSW). A comparative study on the microstructure and toughness in the ICCGHAZs for FSW and gas metal arc welding(GMAW) was performed. The toughness in the ICCGHAZ for FSW was improved significantly than that in the ICCGHAZ for GMAW. Generally, the nugget zone(NZ) has a coarse microstructure in the FSW steel joint formed at the highest peak temperature. However, in the current study, the microstructure in the one-pass NZ was remarkably refined owing to the static recrystallization of ferrite. An excellent toughness was achieved in the NZ of the pipeline steel joint that employed FSW.

关键词： pipeline steel thick-gauge plate friction stir welding microstructure toughness

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汽车锆化薄膜前处理现场管理探讨

现代涂料与涂装 2024年第1期27卷 57-59页

作者：刘海军吴为骆宗伟东风汽车股份有限公司

对汽车锆化薄膜前处理工艺应用进行了经验总结，分析了薄膜型前处理及其配套的阴极电泳涂装的管理要点。

关键词：锆化薄膜前处理阴极电泳涂装润湿喷淋

Optimization of Heat Flux Coefficient Determination for Laminar Cooling Control

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Journal of Iron and Steel Research International 2004年第1期11卷 26-28页

作者： CAI Xiao-hui luo zong-an WANG Guo-dong LIU Xiang-hua Northeastern University

A new heat flux coefficient model and improved refreshing rules were introduced for optimizing coiling temperature *** off-line simulation of the new strategy was performed by laminar cooling intelligent software,and ... 详细信息

关键词： heat flux laminar cooling heat flux coefficient model optimization

甘草酸类制剂与核苷(酸)类似物联用对慢性乙型肝炎患者临床疗效与安全性的网状Meta分析

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抗感染药学 2024年第4期21卷 370-377页

作者：范小冬张杰谢星星罗宗伟西充县人民医院四川南充637200 南部县人民医院四川南充637300 雅安市人民医院四川雅安625000

目的:比较与分析甘草酸类制剂与核苷(酸)类似物联用对慢性乙型肝炎(chronic hepatitis B,CHB)患者的临床疗效与安全性。方法:在Pubmed、Embase和中国知网、万方医学网、维普等数据库中,检索建库至2023年10月甘草酸类制剂与核苷(酸)类似... 详细信息

目的:比较与分析甘草酸类制剂与核苷(酸)类似物联用对慢性乙型肝炎(chronic hepatitis B,CHB)患者的临床疗效与安全性。方法:在Pubmed、Embase和中国知网、万方医学网、维普等数据库中,检索建库至2023年10月甘草酸类制剂与核苷(酸)类似物联用对CHB患者临床疗效与安全性的随机对照试验(randomized controlled trial)研究,采用Stata1和Revman等软件进行甘草酸类制剂与核苷(酸)类似物联用对CHB患者的临床疗效与安全性的网状Meta分析。结果:筛选后共纳入文献42篇,共涉及病例3991例;网状Meta分析结果显示,甘草酸类制剂与核苷(酸)类似物联用对CHB患者在丙氨酸转氨酶、天冬氨酸转氨酶、总胆红素等指标上的疗效均优于单用核苷(酸)类似物(P0.05)。结论:甘草酸类制剂与核苷(酸)类似物联用对CHB患者的疗效较为肯定,安全性也较高。

关键词：甘草酸类制剂核苷(酸)类似物慢性乙型肝炎网状Meta分析

SLC6A8通过BNIP3L调控线粒体自噬促进肝癌细胞增殖

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海南医学院学报 2024年第2期30卷 88-93,99页

作者：路远唐俊李文川许佐明罗宗将马嘉盛浦涧右江民族医学院附属医院广西百色533000

目的:探讨SLC6A8通过BNIP3L调控线粒体自噬对肝癌细胞增殖的影响。方法:通过TCGA数据库分析SLC6A8基因在肝癌组织中的表达情况,并与BNIP3L表达进行相关性分析。使用RT-PCR和Western blot技术检测SLC6A8过表达人肝癌Huh-7及Hep3B细胞中SL... 详细信息

目的:探讨SLC6A8通过BNIP3L调控线粒体自噬对肝癌细胞增殖的影响。方法:通过TCGA数据库分析SLC6A8基因在肝癌组织中的表达情况,并与BNIP3L表达进行相关性分析。使用RT-PCR和Western blot技术检测SLC6A8过表达人肝癌Huh-7及Hep3B细胞中SLC6A8和BNIP3L的表达。免疫荧光标记和CCK-8检测法用于观察SLC6A8过表达人肝癌Huh-7及Hep3B细胞线粒体自噬和细胞增殖率。使用CCK-8检测法评估在沉默BNIP3L后SLC6A8过表达人肝癌Huh-7及Hep3B细胞增殖率。结果:SLC6A8在肝癌组织中显著高表达,并与BNIP3L表达呈正相关。SLC6A8过表达可显著促进线粒体自噬和人肝癌Huh-7及Hep3B细胞的增殖。此外,SLC6A8过表达显著促进BNIP3L mRNA和蛋白的表达。沉默BNIP3L后,SLC6A8过表达对肝癌细胞增殖的促进作用被逆转。结论:SLC6A8在肝癌组织中的高表达与BNIP3L有正相关性,且SLC6A8的过表达能促进线粒体自噬和肝癌细胞的增殖,沉默BNIP3L可逆转SLC6A8过表达对肝癌细胞增殖促进作用。这为肝癌的治疗提供了新的靶点和策略。

关键词：线粒体自噬 SLC6A8 BNIP3L 肝细胞癌