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Abnormalities Occurring during Female Gametophyte Development Result in the Diversity of Abnormal Embryo Sacs and Leads to Abnormal Fertilization in indica/japonica Hybrids in Rice

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Journal of Integrative Plant Biology 2009年第1期51卷 3-12页

作者： Yu-Xiang Zeng Chao-Yue Hu Yong-Gen Lu Jin-quan li Xiang-dong liu ( Guangdong Provincial Key Laboratory of Plant Molecular Breeding South China Agricultural University Guangzhou 510642 China)

Embryo sac abortion is one of the major reasons for sterility in indicaljaponica hybrids in rice. To clarify the causal mechanism of embryo sac abortion, we studied the female gametophyte development in two indicaljaponica hybrids via an eosin B staining procedure for embryo sac scanning using confocal laser scanning microscope. Different types of abnormalities occurred during megasporogenesis and megagametogenesis were demonstrated. The earliest abnormality was observed in the megasporocyte. A lot of the chalazal-most megaspores were degenerated before the mono-nucleate embryo sac stage. Disordered positioning of nucleus and abnormal nucellus tissue were characteristics of the abnormal female gametes from the mono-nucleate to four-nucleate embryo sac stages. The abnormalities that occurred from the early stage of the eight-nucleate embryo sac development to the mature embryo sac stage were characterized by smaller sizes and wrinkled antipodals. Asynchronous nuclear migration, abnormal positioning of nucleus, and degeneration of egg apparatus were also found at the eight-nucleate embryo sac stage. The abnormalities that occurred during female gametophyte development resulted in five major types of abnormal embryo sacs. These abnormal embryo sacs led to abnormal fertilization. Hand pollination using normal pollens on the spikelets during anthesis showed that normal pollens could not exclude the effect of abnormal embryo sac on seed setting.

关键词： indicaljaponica hybrid megagametogenesis megasporogenesis Oryza sativa whole-mount eosin B-staining confocal laser scanning microscopy.

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Post-solitons and electron vortices generated by femtosecond intense laser interacting with uniform near-critical-density plasmas

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Chinese Physics B 2022年第4期31卷 486-492页

作者： dong-Ning Yue Min Chen Yao Zhao Pan-Fei Geng Xiao-Hui Yuan quan-li dong Zheng-Ming Sheng Jie Zhang School of Sciences Harbin Institute of Technology at WeihaiWeihai 264209China Key Laboratory for Laser Plasmas(Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-Dao Lee Institute Shanghai 200240China

Generation of nonlinear structures,such as stimulated Raman side scattering waves,post-solitons and electron vortices,during ultra-short intense laser pulse transportation in near-critical-density(NCD)plasmas is studied by using multidimensional particle-in-cell(PIC)*** two-dimensional geometries,both P-and S-polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on *** the S-polarized case,the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons,while the main pulse excites convective electric currents leading to the formation of electron vortices through Kelvin-Helmholtz instability(KHI).In the P-polarized case,the scattered waves dissipate their energy by heating surrounding *** vortices are excited due to the hosing instability of the drive *** polarization dependent physical processes are reproduced in two different planes perpendicular to the laser propagation direction in three-dimensional simulation with linearly polarized laser *** current work provides inspiration for future experiments of laser-NCD plasma interactions.

关键词： stimulated Raman side scattering near-critical-density plasmas electron vortices post-solitons

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Spectral-Phase-Modulated Cross-Polarized Wave for Chirped Pulse Amplifier with High Contrast Ratio

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Chinese Physics Letters 2017年第2期34卷 43-46页

作者： Shuang Qin Zhao-Hua Wang Shuai-Shuai Yang Zhong-Wei Shen quan-li dong Zhi-Yi Wei Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 School of Physics and Optoelectronic Engineering Ludong University Yantai 264025

We demonstrate a high-quality cross-polarized-wave filter based on spectral phase modulation. Driven by Well- eompressed spectral-phase fully-compensated fundamental laser lmlses, the filter stretches the pulse bandwi... 详细信息

关键词： Spectral-Phase-Modulated Cross-Polarized Wave for Chirped Pulse Amplifier with High Contrast Ratio FTL

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New conversion of Friendlnder reaction of 3-amino-1H-benzo[f]chromene-2-carbonitriles with cyclohexanone

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Chinese Chemical Letters 2008年第1期19卷 15-18页

作者： Jia Rong li li Jun Zhang Xi quan Yang Qing li dong Wang Chun Xia Wang Da Xin Shi Qi Zhang School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China

Two different skeletons of heterocyclic compounds, quinoline and quinazolinone analogs could be obtained by a novel one-pot synthesis from substituted 3-amino- 1H-benzo[f]chromene-2-carbonitrile derivatives and cyclohexanone in DMF in the catalyst of anhydrous Zinc chloride under reflux. A plausible mechanism was proposed. 2007 Jia Rong li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Friedlander cyclocondensation Quinoline and quinazolinone analogs New conversion

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Excitation-wavelength-dependent THz wave modulation via external bias electric field

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Chinese Physics B 2020年第6期29卷 212-215页

作者： Shi-Jia Feng li-quan dong Dan-Ni Ma Tong Wu Yong Tan liang-liang Zhang Cun-lin Zhang Yue-Jin Zhao Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Terahertz Optoelectronics Ministry of EducationBeijing Key Laboratory for Terahertz Spectroscopy and Imagingand Beijing Advanced Innovation Center for Imaging TechnologyDepartment of PhysicsCapital Normal UniversityBeijing 100048China

A theoretical model was proposed to describe the effects of external bias electric field on terahertz(THz)generated in air *** model predicted that for a plasma in a bias electric field,the amplification effect of the THz wave intensity increases with the increase of the excitation laser *** experimentally observed the relationship between the THz enhancement effect and the electric field strength at different *** results showed a good agreement with the model *** results enhance our understanding of the physical mechanism by which femtosecond lasers excite air to generate THz and extend the practical applications of THz generation and modulation.

关键词： THz wave generation DC bias electric field ponderomotive force

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Electron Dynamics and Characteristics of Attosecond Electromagnetic Emissions in Relativistic Laser-Plasma Interactions

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Chinese Physics Letters 2018年第9期35卷 37-40页

作者： Yi-Ying Wu quan-li dong Zhao-Hua Wang Ping liu Cheng-Zhen Wang Yi-Hui Zhang Zheng-Ming Sheng Jie Zhang School of Physics and Optoeleetronics Engineering Ludong UniversityYantai 264025 Beijing National Laboratory of Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240 Innovative Collaboration Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240 University of Chinese Academy of Sciences Beijing 100864

Generation of attosecond electromagnetic （EM） pulses and the associated electron dynamics are studied using particle-in-cell simulations of relativistic laser pulses interacting with over-dense plasma foil targets. The inter- action process is found to be so complicated even in the situation of utilizing driving laser pulses of only one cycle. Two electron bunches closely involved in the laser-driven wavebreaking process contribute to attosecond EM pulses through the coherent synchrotron emission process whose spectra are found to follow an exponential decay rule. Detailed investigations of electron dynamics indicate that the early part of the reflected EM emission is the high-harmonics produced through the relativistic oscillating mirror mechanism. High harmonics are also found to be generated through the Bremsstrahlung radiation by one electron bunch that participates in the wavebreaking process and decelerates when it experiences the local wavebreaking-generated high electrostatic field in the moving direction.

关键词： Electron Dynamics and Characteristics of Attosecond Electromagnetic Emissions in Relativistic Laser-Plasma Interactions

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The Clinical Blood Transfusion Management in Rh（-） Patients

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麻醉与监护论坛 2010年第2期17卷 92-93页

作者： Qiang li quan dong Fu-jun Zhang Qing-sheng Xue Bu-wei Yu Department of Anesthesiology Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 P.R.China

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Effect of lamellarization on the microstructure and mechanical properties of marine 10Ni5CrMoV steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 402-413页

作者： Tao Zou Yanwu dong Zhouhua Jiang Shuyang Du Yushuo li School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education) Northeastern UniversityShenyang 110819China

Multistage heat treatment involving quenching(Q),lamellarizing(L),and tempering(T)is applied to marine 10Ni5CrMoV *** microstructure and mechanical properties were studied by multiscale characterizations,and the kinetics of reverse austenite transformation,strain hardening behavior,and toughening mechanism were further *** lamellarized specimens possess low yield strength but high toughness,especially cryogenic *** leads to the development of film-like reversed austenite at the martensite block and lath boundaries,refining the martensite structure and lowering the equivalent grain *** analysis of austenite reversion based on the JMAK model shows that the isothermal transformation is dominated by the growth of reversed austenite,and the maximum transformation of reversed austenite is reached at the peak temperature(750℃).The strain hardening behavior based on the modified Crussard-Jaoul analysis indicates that the reversed austenite obtained from lamellarization reduces the proportion of martensite,significantly hindering crack propagation via martensitic transformation during the *** a consequence,the QLT specimens exhibit high machinability and low yield *** with the QT specimen,the ductile-brittle transition temperature of the QLT specimens decreases from-116 to-130℃due to the low equivalent grain size and reversed austenite,which increases the cleavage force required for crack propagation and absorbs the energy of external load,*** work provides an idea to improve the cryogenic toughness of marine 10Ni5CrMoV steel and lays a theoretical foundation for its industrial application and comprehensive performance improvement.

关键词： 10Ni5CrMoV steel lamellarizing reversed austenite cryogenic toughness ductile-brittle transition temperature

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批判视野下罗尔斯和森的分配正义理论之比较

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商业研究 2017年第9期 110-117页

作者：朱成全李东杨东北财经大学经济学院辽宁大连116025

本文围绕约翰·罗尔斯和阿马蒂亚·森关于分配正义理论中基本善和可行能力的争论而展开,认为森的分配正义理论采取一种面向实际的现实研究方法,着眼于现实的对比,因而更具合理性;二者理论的相同点表现在避免了效用比较问题、对非收入因... 详细信息

本文围绕约翰·罗尔斯和阿马蒂亚·森关于分配正义理论中基本善和可行能力的争论而展开,认为森的分配正义理论采取一种面向实际的现实研究方法,着眼于现实的对比,因而更具合理性;二者理论的相同点表现在避免了效用比较问题、对非收入因素的关注、对弱势群体的关注和重视异质个体的多样性特征,不同点表现在对于自由追求标准不同、比较指标范围不同、差别原则适用对象不同和理论所要达到的目的不同。以马克思辩证法思想为指导对两者理论进行哲学批判,并综合二者的互补性从分配制度和政策上探索有效治理中国贫富差距问题的对策更具有合理性。

关键词：分配正义贫富差距基本善可行能力

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Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao li Yangfei Chen Yang Jiang Xiaofei Guo Han dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

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