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Effects of environment and genotype-by-environment interaction on phenotype of Rorippa elata(Brassicaceae),an endemic alpine plant in the Hengduan mountains

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Journal of Plant Ecology 2024年第4期17卷 42-55页

作者： Zhi-Qiang Du yao-wu Xing Ting-Shen Han CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Diversity and Specialty Crops Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China

Global climate change poses a severe threat to mountain *** plasticity and local adaptation are two common strategies for alpine plant to cope with such *** may facilitate organismal adaptation to contrasting environments,depending on the influences of the environment or genotype or their interacted *** this study,we use an endemic alpine plant(Rorippa elata)in the Hengduan mountains(HDM)to unravel its phenotypic basis of adaptation strategy and evaluate the relative contributions of environment and genotype to its *** transplanted 37 genotypes of *** into two common gardens across low and high elevations(2800 vs.3800 m)during *** fitness-related traits were measured,including flowering probability and glucosinolates(GS)*** estimated the environmental or genotypic contributions to the phenotype and identified the main environmental *** results revealed that both environment and genotype-by-environment interactions contributed to the phenotypes of *** heterogeneity was identified as a key factor that explained 24%of the total phenotypic *** particular,genotypes of the northern HDM showed significantly higher plasticity in flowering probability than those of the southern ***,within the southern HDM,GS content indicated local adaptation to herbivory stresses for *** genotypes along *** conclusion,our results suggest that *** may have adapted to the alpine environment through species-level plasticity or regional-level local *** processes were shaped by either complex topography or interactions between genotype and mountain *** study provides empirical evidence on the adaptation of alpine plants.

关键词： alpine plant common garden genotype-by-environment Hengduan mountains local adaptation phenotypic plasticity

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Mechanism and application of mechanical property improvements in engineering materials by pulsed magnetic treatment:A review

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Friction 2024年第10期12卷 2139-2166页

作者： Zhipeng CAI Chengkai QIAN Xu ZHANG Ning DAI yao wu Wen JI State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Tianjin Research Institute for Advanced Equipment Tsinghua UniversityTianjin 300304China

Pulsed magnetic treatment(PMT)has been adopted as an effective strengthening method for engineering materials and components in recent years,and the development of its application depends on the comprehensive understanding of the nature of *** deep mechanism was thought initially to be the magnetostrictive effect,while further investigation found that the magnetic field could lead to the change of the defect states in the crystal,which is called the magnetoplastic *** to the complexity of the engineering materials,manifestations of the magnetoplastic effect become more diverse,and they were reviewed in the form of microstructure homogenization and interfacial ***,the mechanism of the magnetoplastic effect was discussed,focusing on the changes in the spin states under the external magnetic *** modifications could also alter material performances,especially the residual stress,plasticity,and fatigue ***,PMT with specific parameters can be utilized to obtain an ideal combination of microstructure,residual stress,and mechanical properties for better service performance of different mechanical parts,and its applications on machining tools and bearings are perfect *** work reviews the effect of PMT on the microstructure and properties of different materials and the mechanism,and it also summarizes the fundamental applications of PMT on essential mechanical parts.

关键词： pulsed magnetic treatment wear resistance microstructure modifications mechanical properties magnetoplastic effect

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Microbial-inspired self-healing of concrete cracks by sodium silicate-coated recycled concrete aggregates served as bacterial carrier

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Frontiers of Structural and Civil Engineering 2024年第1期18卷 14-29页

作者： Jing XU Xianzhi WANG wu yao Anna A.KULMINSKAYA Surendra P.SHAH Key Laboratory of Advanced Civil Engineering Materials(Ministry of Education) School of Materials Science and EngineeringTongji UniversityShanghai 201804China Petersburg Nuclear Physics Institute Named by B.P.Konstantinov of National Research Centre Kurchatov InstituteGatchina 188300Russia Center for Advanced Construction Materials University of Texas at ArlingtonArlingtonTX 76019USA

Microbially induced carbonate precipitation(MICP)is a promising technique for the autonomous healing of concrete *** this study,the effect of pH on MICP was *** results indicate that the MICP process was inhibited when the pH was higher than *** vaterite and calcite were produced when the pH was*** concrete aggregates(RCA)coated with sodium silicate have been proposed as protective carriers for microbial healing *** the presence of the coated RCA resulted in a loss of the splitting tension strength of the concrete,the loaded healing agents were highly efficient in self-healing *** incorporated with 20%RCA loaded with healing agents exhibited the best self-healing *** the initial crack widths were between 0.3 and 0.4 mm,the 7-d mean healing rate was approximately 90%.At 28 d,the crack area filling ratio was 86.4%,while its water tightness recovery ratio was 74.4%and 29.8%,respectively,for rapid and slow *** study suggests that RCA coated with sodium silicate is an effective method for packaging microbial healing agents and has great potential for developing cost-effective self-healing concrete.

关键词： self-healing microbial-induced carbonate precipitation water uptake recycled concrete aggregate protective carrier

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Large-area superconducting nanowires fabricated based on laser exposure on photoresist

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Nano Research 2024年第9期17卷 8220-8225页

作者： Han Zhou Shangqing Li Yicong Huang Wenqian Liu Haohui Zhang yao wu Wenzhi Zhang Enhua Chen Chaoyun Zhang Xiaoliang Wang Daqian Liu Jianxin Lin Qingdao Innovation and Development Center of Harbin Engineering University Qingdao 266000China College of Intelligent systems and Engineering Harbin Engineering UniversityHarbin 150000China

To realize large-scale micro/nanofabrication process in superconducting devices,the nano laser direct writing(NLDW)as a potential tool was *** this paper,thermal effect induced laser-matter(superconducting film)interaction based on laser direct writing on Nb films and laser exposure on photoresist were investigated by simulation and *** avoid nanoscale thermal effect on superconducting films,large-scale superconducting nanoarrays with the area up to 100μm×100μm based on laser exposure on photoresist were *** with laser direct writing on superconducting films,which lead to the degradation of superconducting performance such as critical current,transition temperature,the superconducting nanoarrays based on laser exposure on photoresist maintain excellent superconducting performance without *** that,by further optimizing the process parameters and the thickness of photoresist,the nanowires with the width down to nanometers are *** with the traditional electron beam and ion beam process,to some extent,the nanowires fabrication process based on NLDW provides a more efficient and cost-effective path for the fabrication of large-area superconducting devices/circuits.

关键词： nano laser direct writing(NLDW) superconducting nanowire arrays superconducting devices light-matter interaction

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Strong nonlinear optical processes with extraordinary polarization anisotropy in inversionsymmetry broken two-dimensional PdPSe

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Light(Science & Applications) 2024年第8期13卷 1524-1533页

作者： Song Zhu Ruihuan Duan Xiaodong Xu Fangyuan Sun Wenduo Chen Fakun Wang Siyuan Li Ming Ye Xin Zhou Jinluo Cheng yao wu Houkun Liang Junichiro Kono Xingji Li Zheng Liu Qi Jie Wang School of Electrical and Electronic Engineering Nanyang Technological University639798 SingaporeSingapore School of Material Science and Engineering Nanyang Technological University639798 SingaporeSingapore CINTRA CNRS/NTU/THALES UMI 3288Research Techno PlazaNanyang Technological University637371 SingaporeSingapore School of Materials Science and Engineering Harbin Institute of Technology150001 HarbinChina Department of Chemistry National University of Singapore117543 SingaporeSingapore GPL Photonics Lab State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina School of Electronics and Information Engineering Sichuan University610064 ChengduSichuanChina School of Physical and Mathematical Sciences Nanyang Technological University637371 SingaporeSingapore Departments of Electrical and Computer Engineering Physics and Astronomyand Materials Science and NanoEngineeringRice UniversityHoustonTXUSA

Nonlinear optical activities,especially second harmonic generation(SHG),are key phenomena in inversion-symmetrybroken two-dimensional(2D)transition metal dichalcogenides(TMDCs).On the other hand,anisotropic nonlinear optical processes are important for unique applications in nano-nonlinear photonic devices with polarization functions,having become one of focused research topics in the field of nonlinear ***,the strong nonlinearity and strong optical anisotropy do not exist simultaneously in common 2D ***,we demonstrate strong secondorder and third-order susceptibilities of 64 pm/V and 6.2×10^(-19)m^(2)/V^(2),respectively,in the even-layer PdPSe,which has not been discovered in other common TMDCs(e.g.,MoS2).Strikingly,it also simultaneously exhibited strong SHG anisotropy with an anisotropic ratio of~45,which is the largest reported among all 2D materials to date,to the best of our *** addition,the SHG anisotropy ratio can be harnessed from 0.12 to 45(375 times)by varying the excitation wavelength due to the dispersion ofχ^(2)*** an illustrative example,we further demonstrate polarized SHG imaging for potential applications in crystal orientation identification and polarization-dependent spatial *** findings in 2D PdPSe are promising for nonlinear nanophotonic and optoelectronic applications.

关键词： materials anisotropy nonlinear

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2022年华南极端“龙舟水”与大气环流及海温异常的关系

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大气科学学报 2024年第3期47卷 450-459页

作者：伍红雨吴遥郑璟广东省气候中心广东广州510641 中国气象局广州热带海洋气象研究所/广东省区域数值天气预报重点实验室广东广州510641 重庆市气候中心重庆401147

利用华南192个国家气象观测站逐日降水资料,NCEP/NCAR大气环流再分析资料,NOAA月平均海表温度资料(ERSST V5)及向外长波辐射(OLR)资料,采用相关、合成分析的方法研究了2022年华南“龙舟水”异常与大气环流及海温异常的关系。结果表明,2... 详细信息

利用华南192个国家气象观测站逐日降水资料,NCEP/NCAR大气环流再分析资料,NOAA月平均海表温度资料(ERSST V5)及向外长波辐射(OLR)资料,采用相关、合成分析的方法研究了2022年华南“龙舟水”异常与大气环流及海温异常的关系。结果表明,2022年“龙舟水”期间,东亚大槽、东北冷涡偏强,南下冷空气偏强,同时西太平洋副热带高压和南支槽均偏强,在华南存在明显的水汽辐合。2022年发生的拉尼娜事件,大气环流对其有明显响应,Walker环流增强,华南对流明显加强,菲律宾以东存在异常反气旋环流,副高加强导致其西北侧的西南风加强,向华南水汽输送显著增强,同时华南存在显著的上升运动。大气环流和海温的异常导致2022年华南极端“龙舟水”。

关键词：极端“龙舟水” 华南大气环流海温

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基于差分进化算法的FMS中机器与多载AGV调度

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控制与决策 2024年第9期39卷 3108-3116页

作者：王子实吴耀华山东大学控制科学与工程学院济南250061

针对柔性制造系统中机器与混合多载自动导引搬运车(automated guided vehicle, AGV)集成调度问题,以最小化最大完工时间为目标,提出一种改进混合离散差分进化算法,通过离散操作进行差分进化算法的变异、交叉,并对每次迭代的最优个体进... 详细信息

针对柔性制造系统中机器与混合多载自动导引搬运车(automated guided vehicle, AGV)集成调度问题,以最小化最大完工时间为目标,提出一种改进混合离散差分进化算法,通过离散操作进行差分进化算法的变异、交叉,并对每次迭代的最优个体进行变邻域搜索.设计基于搬运任务、机器和AGV的3层编码结构,并进行合理化调整;设计基于关键路径的变邻域搜索,有针对性地调整关键路径上任务的次序、对应工序的机器和AGV,提高局部搜索效率;设计基于外部档案的个体更新策略,将种群中较差的个体从外部档案中进行替换,提高全局搜索效率.最后,通过实验验证算法改进策略的有效性以及所提出算法的有效性,分析AGV数量、AGV载位容量以及AGV电池可用时间对算法求解结果和改进效果的影响.

关键词：柔性制造系统多载位AGV 差分进化算法变邻域搜索关键路径最大完工时间

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基于床层传热的皮江法炼镁过程优化

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东北大学学报（自然科学版） 2024年第4期45卷 523-529页

作者：傅大学狄跃忠王耀武东北大学多金属共生矿生态化冶金教育部重点实验室辽宁沈阳110819 东北大学冶金学院辽宁沈阳110819 福建省长汀金龙稀土有限公司福建龙岩366300

球团在还原罐内传热导致的温度梯度是限制皮江法还原反应的关键因素.本文采用数值方法研究了球团尺寸、装料方式、还原罐外壁温度等因素对床层温度分布、还原率分布的影响.结果表明:在球团直径为22.3 mm、还原时间相同时能够获得最大的... 详细信息

球团在还原罐内传热导致的温度梯度是限制皮江法还原反应的关键因素.本文采用数值方法研究了球团尺寸、装料方式、还原罐外壁温度等因素对床层温度分布、还原率分布的影响.结果表明:在球团直径为22.3 mm、还原时间相同时能够获得最大的还原率;生产过程中应尽量提高还原罐外壁温度;床层中心区域温度低,还原反应速率慢,反应滞后;通过中心留空的方法能够有效缩短还原周期,提高原料利用率;以单位体积、单位时间镁的产量为依据,对于内径为270 mm的还原罐,当中心留空区域的直径小于27 mm时,可获得最大生产效率.

关键词：镁皮江法真空硅热还原数值仿真传热

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应激诱导蛋白Sestrin2对脂多糖诱发树突状细胞坏死性凋亡的影响

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中华危重病急救医学 2024年第3期36卷 237-243页

作者：吴梦瑶姚人骐段昱王陆郑丽玉贺鹏翼董宁吴瑶姚咏明解放军总医院医学创新研究部北京100853 解放军总医院第一医学中心普通外科北京100853 解放军总医院第一医学中心重症医学科北京100853

目的探讨应激诱导蛋白Sestrin2(SESN2)对脂多糖(LPS)联合泛天冬氨酸特异性半胱氨酸蛋白酶(caspase)抑制剂zVAD诱导小鼠树突状细胞(DC)坏死性凋亡的影响。方法将培养至第3~10代小鼠骨髓来源树突状细胞系DC2.4给予LPS刺激0、6、12、24 h,... 详细信息

目的探讨应激诱导蛋白Sestrin2(SESN2)对脂多糖(LPS)联合泛天冬氨酸特异性半胱氨酸蛋白酶(caspase)抑制剂zVAD诱导小鼠树突状细胞(DC)坏死性凋亡的影响。方法将培养至第3~10代小鼠骨髓来源树突状细胞系DC2.4给予LPS刺激0、6、12、24 h,并按照刺激时间点进行分组,采用蛋白质免疫印迹试验(Western blotting)检测各组细胞SESN2蛋白表达水平。将过表达空载慢病毒(NC)、SESN2基因过表达RNA序列慢病毒(SESN2 LV-RNA)、小干扰空载慢病毒(NS)以及SESN2基因小干扰RNA序列慢病毒(SESN2 siRNA)分别转染至DC2.4细胞中,转染后72 h,于倒置荧光显微镜下观察细胞荧光表达改变。各转染组细胞给予LPS刺激24 h,同时设立空白对照组给予磷酸盐缓冲液(PBS)并培养24 h,采用Western blotting检测SESN2蛋白表达水平;给予LPS+zVAD刺激24 h,同时设立空白对照组给予PBS并培养24 h,采用Western blotting检测混合谱系激酶结构域样蛋白(MLKL)、磷酸化MLKL(p-MLKL)蛋白表达水平,使用激光共聚焦显微镜观察p-MLKL变化及阳性细胞数量,采用流式细胞术和Hoechst染色检测坏死性凋亡细胞比例。结果与LPS刺激0 h组相比,LPS刺激24 h组细胞SESN2蛋白表达明显升高,故将24 h作为后续实验LPS刺激时间点。成功转染慢病毒后培养24 h,SESN2 siRNA+LPS+zVAD组细胞MLKL磷酸化水平明显高于NS+LPS+zVAD组;SESN2 LV-RNA+LPS+zVAD组细胞MLKL磷酸化水平明显低于NC+LPS+zVAD组;且NS+LPS+zVAD组和NC+LPS+zVAD组MLKL磷酸化水平分别高于NS+PBS组、NC+PBS组。激光共聚焦显微镜下显示,各组细胞p-MLKL蛋白荧光表达数量及荧光强度变化趋势与上述结果一致。流式细胞术和Hoechst染色检测结果均显示,SESN2 siRNA+LPS+zVAD组坏死性凋亡细胞比例明显高于NS+LPS+zVAD组〔流式细胞术:(30.800±1.153)%比(20.800±1.114)%,Hoechst染色:(75.267±0.451)%比(46.267±3.371)%,均P<0.05〕,提示敲减SESN2表达可以进一步加剧细胞坏死性凋亡发生;SESN2 LV-RNA+LPS+zVAD组坏死性凋亡细胞比例明显低于NC+LPS+zVAD组〔流式细胞术:(7.160±0.669)%比(19.240±2.322)%,Hoechst染色:(32.433±3.113)%比(48.567±4.128)%,均P<0.05〕,提示过表达SESN2可以逆转上述改变。结论SESN2对于脓毒症状态下DC坏死性凋亡具有明显抑制效应,干预SESN2有助于调节脓毒症时DC介导免疫反应进程。

关键词：应激诱导蛋白Sestrin2 坏死性凋亡脓毒症树突状细胞免疫反应

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深刻理解“ 第二个结合”的逻辑前提——以价值观主张的契合性为视角

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中南民族大学学报（人文社会科学版） 2024年第7期44卷 1-9,181页

作者：姚功武张士海山东大学马克思主义学院山东济南250100

“天下观”作为中华优秀传统文化中的核心范畴和重要概念,是中国人对“天下”问题的总观点和总看法,具有鲜明深刻的多重内涵,同科学社会主义价值观主张具有高度契合性。其集中体现为:哲学思维高度契合,中华传统天下观辩证思维方式同辩... 详细信息

“天下观”作为中华优秀传统文化中的核心范畴和重要概念,是中国人对“天下”问题的总观点和总看法,具有鲜明深刻的多重内涵,同科学社会主义价值观主张具有高度契合性。其集中体现为:哲学思维高度契合,中华传统天下观辩证思维方式同辩证唯物主义世界观方法论的共通共融;价值追求高度契合,“民为邦本”民本思想同“人民群众创造世界历史”群众史观的共通共融;天下情怀高度契合,“和合共生”世界情怀同超越国界“真正的共同体”思想的共通共融;社会理想高度契合,“天下为公”大同世界同“自由人联合体”共产主义社会的共通共融。新时代新征程,深刻把握中华优秀传统文化同科学社会主义价值观主张的高度契合性,有助于学习贯彻习近平文化思想,更好实现“第二个结合”,为强国建设、民族复兴注入强大精神力量。

关键词：习近平文化思想中华优秀传统文化天下观科学社会主义价值观主张 “第二个结合”

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