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Journal of Magnesium and Alloys 2023年第4期11卷 1206-1212页

作者： xuejian li Xiaojun Wang Xiaoshi Hu Chao Xu Wenzhu Shao Kun Wu State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001PR China National Key Laboratory of Precision Hot Processing of Metal Harbin Institute of TechnologyHarbin 150001PR China

Converting CO_(2)to valuable materials is attractive in environmental protection and resource *** this study,a vapor-liquid interface reaction system for mass production of high-quality graphene is *** graphene obtained has high crystallinity and few defects during the reaction of CO_(2)and Mg *** growth mechanism of graphene is demonstrated in vapor-liquid interface area by combining the CO_(2)bubbles as a soft template to guide growth with the confinement effect of dense MgO *** quality of the graphene is verified by epoxy composites with high electromagnetic shielding ***,the V-L reaction method ingeniously solves the dispersion of graphene in metal,providing a preparation strategy of Mg matrix composites with structure and function integration.

关键词： Graphene Vapor-liquid interface Magnesiothermic reaction Dispersion Shielding effectiveness

Fabrication,Microstructure and Mechanical Properties of in situ GNPs Reinforced Magnesium Matrix Composites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 561-569页

作者： Peitang Zhao xuejian li Hailong Shi Xiaoshi Hu Chunlei Zhang Chao Xu Xiaojun Wang The 38th Research Institute of China Electronics Technology Group Corporation Hefei 230088China National Key Laboratory of Precision Hot Processing of Metal Harbin Institute of TechnologyHarbin 150001China

Graphene reinforced magnesium matrix composites have wide applications in automotive,electronics,aerospace and military fields due to the fascinating mechanical ***,it is difficult to realize the high strength and ductility *** this work,the in situ liquid-state method was utilized to prepare GNPs/Mg6Zn composites via CO_(2)/Mg chemical *** strength of the GNPs/Mg6Zn composites was improved with increasing content of the ***,the composites also exhibit a notable plastic deformation stage,and especially the ductility of 0.12 GNPs/Mg6Zn composites reaches 27.6%.Therefore,this novel preparation method has great potential application for fabricating Mg matrix composites with high strength and high ductility.

关键词： Magnesium matrix composite In situ composite Microstructure Mechanical properties

Diurnal and seasonal variations in carbon fluxes in bamboo forests during the growing season in Zhejiang province, China

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Journal of Forestry Research 2019年第2期30卷 657-668页

作者： liang Chen Yuli liu Guomo Zhou Fangjie Mao Huaqiang Du Xiaojun Xu Pingheng li xuejian li State Key Laboratory of Subtropical Silviculture Zhejiang A & F University Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province Zhejiang A & F University School of Environmental and Resources Science Zhejiang A & F University

Bamboo forest is an important forest type in subtropical China and is characterized by fast growth and high carbon sequestration capacity. However, the dynamics of carbon fluxes during the fast growing period of bamboo shoots and their correlation with environment factors are poorly understood. We measured carbon dioxide exchange and climate variables using open-path eddy covariance methods during the 2011 growing season in a Moso bamboo forest(MB, Phyllostchys edulis) and a Lei bamboo forest(LB, Phyllostachys violascens) in Zhejiang province,China. The bamboo forests were carbon sinks during the growing season. The minimum diurnal net ecosystem exchange(NEE) at MB and LB sites were-0.64 and-0.66 mg C m^(-2) s^(-1), respectively. The minimum monthly NEE, ecosystem respiration(RE), and gross ecosystem exchange(GEE) were-99.3 ± 4.03, 76.2 ±2.46, and^(-1)91.5 ± 4.98 g C m^(-2) month^(-1), respectively,at MB site, compared with-31.8 ± 3.44, 70.4 ± 1.41,and^(-1)57.9 ± 4.86 g C m^(-2) month^(-1), respectively, at LB site. Maximum RE was 92.1 ± 1.32 g C m^(-2) month^(-1) at MB site and 151.0 ± 2.38 g C m^(-2) month^(-1) at LB *** control factors varied by month during the growing season, but across the whole growing season, NEE and GEE at both sites showed similar trends in sensitivities to photosynthetic active radiation and vapor pressure deficit,and air temperature had the strongest correlation with RE at both sites. Carbon fluxes at LB site were more sensitive to soil water content compared to those at MB site. Both onyear(years when many new shoots are produced) and offyear(years when none or few new shoots are produced)should be studied in bamboo forests to better understand their role in global carbon cycling.

关键词： Bamboo forest Eddy covariance Carbon fluxes Carbon sequestration

Enantioselective Synthesis of Benzazepinoindoles Bearing Trifluoromethylated Quaternary Stereocenters Catalyzed by Chiral Spirocyclic Phosphoric Acids

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Enantioselective Synthesis of Benzazepinoindoles Bearing Tri...

大数据时代下爬取企业数据行为的入罪标准及其司法限缩

手性中国2014学术研讨会

作者： Haorui Gu xuejian li Xufeng lin Department of Chemistry Zhejiang University

＜正＞Over the past few years,great efforts have been devoted to the synthesis of functionalized molecules with a CF3-containing stereocenter because of their superior biological properties.[1]In particular,the construction of cyclic quaternary stereocenters bearing a CF3 moiety remains a challenging project in organic *** a few examples with a 3,5 or 6-membered ring have been *** group

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大连理工大学学报（社会科学版） 2023年第5期44卷 79-87页

作者：李雪健南京师范大学法学院江苏南京210046

作为网络爬虫的行为对象,企业数据是表现为二进制代码的信息。基于传统权利体系的不兼容及价值冲突的双重困境,企业数据所承载的法益并非是一项权利。为衡平企业数据控制与流通,企业数据所承载法益宜理解为企业对数据的事实控制,侵犯企... 详细信息

作为网络爬虫的行为对象,企业数据是表现为二进制代码的信息。基于传统权利体系的不兼容及价值冲突的双重困境,企业数据所承载的法益并非是一项权利。为衡平企业数据控制与流通,企业数据所承载法益宜理解为企业对数据的事实控制,侵犯企业数据的行为成立非法获取计算机信息系统数据罪。判断网络爬虫行为不法的核心在于对非法获取计算机信息系统数据罪构成要件行为中“非法侵入”的理解。“非法侵入”的本质是“未经授权或超越授权进入计算机信息系统”,其需要根据不同系统类型分别适用宽窄不一的代码或合同规则。当前,司法机关对企业数据承载法益的权利化理解及企业系统类型的不予区分导致爬取企业数据行为入罪的严重扩张。司法机关理应根据被害人承诺及优越利益理论,对爬取公开数据、垄断数据的行为予以出罪。且司法机关应认识到接入互联网的企业计算机信息系统系是混合型系统,并适用限缩的代码与合同规则以对无视技术合约及突破或绕过反爬虫措施的爬取行为进行精准判断。

关键词：网络爬虫企业数据非法侵入非法获取计算机信息系统数据罪

球磨法制备聚氯乙烯/氯化聚乙烯复合粒子及其对聚氯乙烯的增韧作用

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高分子材料科学与工程 2019年第7期35卷 100-107页

作者：李雪健熊英郭少云四川大学高分子研究所高分子材料工程国家重点实验室

采用球磨法对聚氯乙烯(PVC)和氯化聚乙烯(CPE)进行固相力化学处理,制得复合粒子MGC,研究了MGC对PVC的增韧增强作用及机理。与PVC/CPE相比,PVC/MGC(Y2G0.5)复合材料的拉伸强度、断裂伸长率和冲击强度分别提高了1.39%、92.11%和472.91%。... 详细信息

采用球磨法对聚氯乙烯(PVC)和氯化聚乙烯(CPE)进行固相力化学处理,制得复合粒子MGC,研究了MGC对PVC的增韧增强作用及机理。与PVC/CPE相比,PVC/MGC(Y2G0.5)复合材料的拉伸强度、断裂伸长率和冲击强度分别提高了1.39%、92.11%和472.91%。分析测试结果表明,两步法球磨有利于使CPE包覆在PVC初级粒子表面,并生成部分接枝共聚物PVC-g-CPE,两相界面作用得到提高,从而使CPE在PVC体系中呈类网状结构分布,应力场体积增加直至应力网络完全构建,使材料在断裂过程中基体发生完全屈服,最终产生韧性断裂。

关键词：聚氯乙烯氯化聚乙烯球磨法增韧改性

Screening and Identification of Strains Converting Trans-anethole to Anisic Acid

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Agricultural Biotechnology 2021年第1期10卷 91-95页

作者： Jianglin YIN xuejian li Xueying ZHENG Yuyan FENG Jian ZHANG Guangxi University of Chinese Medicine Nanning 530200China

[Objectives] This study was conducted to isolate and screen the bacteria that can convert trans-anethole to anisic acid from star anise and its environmental samples, and identify the bacteria. [Methods] According to the traditional microbial culture method, with trans-anethole as the sole carbon source, through enrichment culture and separation and purification, preliminary screening by thin layer chromatography and re-screening by high-performance liquid chromatography, strains that degraded trans-anethole to produce anisic acid were obtained, and 16 S rDNA sequencing and phylogenetic tree construction were performed for genetic analysis. [Results] Eleven strains that degraded trans-anethole to produce anisic acid were obtained, among which strain NT2 that produced anisic acid with a relatively high efficiency was initially identified as Pseudomonas sp. The strain’s trans-anethole degradation rate was 45.41%, and the molar production rate and cumulative concentration of anisic acid were 21.80% and 1.96 g/L, respectively. [Conclusions] Strain NT2 has a strong ability to degrade trans-anethole to produce anisic acid, and can enrich strain resources for degradation of trans-anethole to anisic acid through microbial conversion.

关键词： Trans-anethole Anisic acid Strain screening Microbial conversion

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如何构建电子商务环境下的物流配送体系

中国市场 2007年第49期 88-89页

作者：李学建山东经贸职业学院工商管理系

随着电子商务的推广和应用,物流配送已成为制约我国电子商务发展的瓶颈。本文深入分析了当前我国电子商务物流配送体系中存在的主要问题,并对如何构建电子商务的物流配送体系提出了相应对策。

关键词：电子商务物流配送体系措施

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多套信息发布系统的整合方案

计算机应用与软件 2012年第12期29卷 259-261页

作者：李学俭广东女子职业技术学院信息资源中心广东广州511450

信息发布系统是信息发布的有效途径,然而多套信息发布系统的迭代应用并不能带来更高的效用,反而由于系统彼此孤立不能有效共享信息而带来负面效果。系统整合是基于现有业务系统采用业务驱动或数据驱动的方式构建有机的业务整体,实现数... 详细信息

信息发布系统是信息发布的有效途径,然而多套信息发布系统的迭代应用并不能带来更高的效用,反而由于系统彼此孤立不能有效共享信息而带来负面效果。系统整合是基于现有业务系统采用业务驱动或数据驱动的方式构建有机的业务整体,实现数据互联互通,解决信息孤岛问题。结合实际案例,给出多套信息发布系统的整合方案。应用结果表明,通过系统整合,可以有效地同步信息发布,提高工作效率。

关键词：信息发布孤岛系统整合统一体

一种对集群回填作业调度改进的RB＿HAR策略

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实验室研究与探索 2018年第9期37卷 126-130,137页

作者：李薛剑雷政安徽大学计算机科学与技术学院合肥230601 中国科学技术大学计算机科学与技术学院合肥230026

作为最常用的作业调度策略之一,回填算法被广泛应用于高性能集群作业管理中。之前的工作针对回填算法提出了一些改进策略,提升了集群系统的性能。但由于回填过程是基于作业的预约运行时间进行的,其中对作业运行时间的不准确预估可能导... 详细信息

作为最常用的作业调度策略之一,回填算法被广泛应用于高性能集群作业管理中。之前的工作针对回填算法提出了一些改进策略,提升了集群系统的性能。但由于回填过程是基于作业的预约运行时间进行的,其中对作业运行时间的不准确预估可能导致预约作业未完成或资源浪费。提出的RB_HAR策略与一般回填算法或一些改进的回填算法相比,该算法能有效的提高回填作业的完成率。设计实验将改进的回填算法RB_HAR应用于高性能集群并与先来先服务、一般回填算法对比。实验结果表明,改进的回填算法在继承了回填算法低响应比、高利用率等优点的基础上,进一步提升了回填作业的完成率。

关键词：并行调度预约回填动态预留高性能计算集群