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Advance in Research of Ecology and Landscape Reconstruction of the River Floodplain In China

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湿地科学 2008年第1期6卷 80-86页

作者： qiAO lifang qi Anguo ZHANG Yichuan College of Landscape Architecture Henan Institute of Science and Technology Xinxiang 453003 Henan P. R. China

The research of ecology and landscape reestablishment of river floodplain is considered favorable to its conservation and *** similarity and difference among river floodplain,wetland,riverside and shore have been reviewed,as well as the progress in the research of floodplain ecology reestablishment in quantitative evaluation,vegetation restoration,the influence on animal habitat and the application of eco-engineering;and of the landscape reestablishment in resource development and utilization,landscape feature and changes,landscape function,structure and *** potentially important fields are expected to be the change of landscape pattern in different scales,the reasonable protection and utilization in the floodplain tourism,the simulating and monitoring of landscape dynamics,the planning and designing methods of floodplain landscape and the management of floodplain ecosystems.

关键词：生态再造景观改造中国洪水

A systematic COSMO-RS study on mutual solubility of ionic liquids and C6-hydrocarbons

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Green Chemical Engineering 2024年第1期5卷 97-107页

作者： Chuxin qi Zhen Song Hongye Cheng lifang Chen Zhiwen qi State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and Technology130 Meilong RoadShanghai200237China

When considering the usage of ionic liquids(ILs)for reactions and separations involving non-polar or weak-polar hydrocarbons,the knowledge of the mutual solubility behaviors of ILs and hydrocarbons is of the utmost *** this work,taking four typical C6-hydrocarbons namely benzene,cyclohexene,cyclohexane,and hexane as representatives,the mutual solubility of ILs and non-polar or weak-polar hydrocarbons are systematically studied based on the COSMO-RS *** reliability of COSMO-RS for these systems is first evaluated by comparing experimental and predicted hydrocarbon-in-IL activity coefficient at infinite dilution and binary/ternary liquid-liquid equilibria of related ***,the mutual solubility of the four hydrocarbons and13,650 ILs(composed by 210 cations and 65 anions)are *** effect of different IL structural characteristics including alkyl chain length,cation family/symmetry/functional group,and anion on the IL-hydrocarbon mutual solubility behaviors are further analyzed by the analyses of interaction energy and screen charge *** mutual solubility databases and the structural effects identified thereon could provide useful guidance for IL selection in related applications.

关键词： C6-hydrocarbons Ionic liquids Mutual solubility COSMO-RS Structural effect analysis

Design and Realization of InP/AlGaInAs MultipleQuantum Well Ring Laser

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Transactions of Tianjin University 2014年第6期20卷 402-406页

作者： Xie Sheng Guo Jing Guan Kun Mao Luhong Guo Weilian qi lifang Li Xianjie School of Electronic In formation Engineering Tianjin UniversityTianjin 300072China The 13th Research Institute of China Electronic Technology Group Corporation Shijiazhuang 050051China

Using beam propagation method （BPM）, key optical design parameters of InP/AlGaInAs multiple quantumwell （MQW） ring laser were numerically analyzed. The influences of waveguide dimensions, curvature radiusand gap size on the coupling efficiency were discussed. An InP/AlGaInAs MQW ring laser with radius of 350 μm wasdesigned and realized. The experimental results show that the designed device, lasing at 1 563.2 nm with side modesuppression ratio higher than 20 dB, exhibited unidirectional bistability between the clockwise and counterclockwisemodes.

关键词： semiconductor laser multiple quantum well optical bistability AlGaInAs

AlGaInAs multi-quantum wells ring laser with optical coupling waveguides

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Chinese Science Bulletin 2009年第20期54卷 3716-3719页

作者： LI XianJie qi lifang GUO WeiLian YU JinLong ZHAO YongLin CAI DaoMin YIN ShunZheng MAO LuHong 13th Institute of China Electronic Technology Group Corporation Shijiazhuang 050051 China School of Electronic Information Engineering Tianjin University Tianjin 300072 China

Based on InAlGaAs multi-quantum wells epitaxy structure for Fabry-Pero laser diode,a multi-quantum wells semiconductor ring laser is realized using ICP dry etching process and polyimide planarization *** laser is generated in a semiconductor resonator ring and is output by two coupled integrated bus *** ring diameter is 700 μm and the width of the waveguide is 3 μ*** output optical power-current(P-I) characteristic and the wavelength spectra of the ring laser are measured using a fiber coupled to the cleaved facet of the bus *** threshold current of the device is 120 mA and the wavelength is 1602 nm at an injected current of 160 *** addition,the operation mode for the laser in the resonator ring is roughly discussed based on the P-I characteristic plot.

关键词：波导激光器多量子阱量子阱半导体激光器耦合环光学输出电流耦合波导激光波长

HvMPK4 phosphorylates HvWRKY1 to enhance its suppression of barley immunity to powdery mildew fungus

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Journal of Genetics and Genomics 2024年第3期51卷 313-325页

作者： Pengya Xue Ling Zhang Renchun Fan Yanan Li Xinyun Han Ting qi lifang Zhao Deshui Yu qian-Hua Shen State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Biotic Interactions College of Advanced Agricultural SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Department of Nutritional Sciences&Toxicology University of CaliforniaBerkeleyCA 94720USA Lushan Botanical Garden Chinese Academy of ScienceJiujiangJiangxi 332900China

Mitogen-activated protein kinase(MAPK)cascades play important roles in disease resistance in model plant ***,the functions of MAPK signaling pathways in crop disease resistance are largely *** we report the function of HvMKK1-HvMPK4-HvWRKY1 module in barley immune ***4 is identified to play a negative role in barley immune response against Bgh,as virus-induced gene silencing of HvMPK4 results in enhanced disease resistance whilst stably overexpressing HvMPK4 leads to super-susceptibility to Bgh ***,the barley MAPK kinase HvMKK1 is found to specifically interact with HvMPK4,and the activated HvMKK1^(DD) variant specifically phosphorylates HvMPK4 in ***,the transcription factor HvWRKY1 is identified to be a downstream target of HvMPK4 and phosphorylated by HvMPK4 in vitro in the presence of HvMKK1^(DD).Phosphorylation assay coupled with mutagenesis analyses identifies S122,T284,and S347 in HvWRKY1 as the major residues phosphorylated by ***1 is phosphorylated in barley at the early stages of Bgh infection,which enhances its suppression on barley immunity likely due to enhanced DNA-binding and transcriptional repression *** data suggest that the HvMKK1-HvMPK4 kinase pair acts upstream of HvWRKY1 to negatively regulate barley immunity against powdery mildew.

关键词： Barley MPK4 WRKY1 Phosphorylation Disease resistance Powdery mildew

Tal6b/AvrXa27A,a hidden TALE targeting the susceptibility gene OsSWEET11a and the resistance gene Xa27 in rice

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Plant Communications 2024年第2期5卷 122-134页

作者： Zhengyin Xu Xiameng Xu Ying Li Linlin Liu qi Wang Yijie Wang Yong Wang Jiali Yan Guanyun Cheng lifang Zou Bo Zhu Gongyou Chen Shanghai Collaborative Innovation Center of Agri-Seeds School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Microbial Metabolism Shanghai Jiao Tong UniversityShanghai 200240China

Xanthomonas oryzae ***(Xoo)secretes transcription activator-like effectors(TALEs)to activate rice susceptibility(S)genes,causing bacterial blight(BB),as well as resistance(R)genes,leading to de-fense against *** activation follows a gene-for-gene paradigm that results in an arms race between the TALE of the pathogen and effector-binding elements(EBEs)in the promoters of host *** this study,we characterized a novel TALE,designated Tal6b/AvrXa27A,that activates the rice S gene OsSWEET11a and the rice R gene ***6b/AvrXa27A is a member of the AvrXa27/TalAO class and contains 16 repeat variable diresidues(RVDs);one RVD is altered and one is deleted in Tal6b/AvrXa27A compared with AvrXa27,a known avirulence(avr)effector of ***6b/AvrXa27A can transcriptionally activate the expression of Xa27 and OsSWEET11a via EBEs in their corresponding promoters,leading to effector-triggered immunity and susceptibility,*** 16 RVDs in Tal6b/AvrXa27A have no obvious similarity to the 24 RVDs in the effector PthXo1,but EBETal6b and EBEPthXo1 are overlapped in the OsSWEET11a ***6b/AvrXa27A is prevalent among Asian Xoo isolates,but PthXo1 has only been reported in the Philippine strain *** editing of EBETal6b in the OsSWEET11a pro-moter further confirmed the requirement for OsSWEET11a expression in Tal6b/AvrXa27A-dependent susceptibility to ***,Tal6b/AvrXa27A resulted in higher transcription of Xa27 than of OsSWEET11a,which led to a strong,rapid resistance response that blocked disease *** suggest that Tal6b/AvrXa27A has a dual function:triggering resistance by activating Xa27 gene expression as an avirulence factor and inducing transcription of the S gene OsSWEET11a,resulting in ***,Tal6b/AvrXa27A,but not AvrXa27,can bind to the promoter of *** underlying recognition mechanism for this binding remains unclear but appears to deviate from the currently accepted TALE code.

关键词： Xanthomonas oryzae pv.oryzae TALE AvrXa27 tal6b Xa27 OsSWEET11a

Chronic Real-Ambient PM_(2.5)Exposure Exacerbates Cardiovascular Risk via Amplifying Liver Injury in Mice Fed with a High-Fat and High-Cholesterol Diet

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Environment & Health 2024年第4期2卷 221-232页

作者： Yi Chen Hiu Lok Ngan Yuanyuan Song Zenghua qi lifang Zhao Chuan Dong Ruijin Li Yanbo Li Zhu Yang Zongwei Cai State Key Laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong Kong SAR 000000China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006China Institute of Environmental Science Shanxi UniversityTaiyuan 030006China Beijing Key Laboratory of Environmental Toxicology Capital Medical UniversityBeijing 100029China

Epidemiology has associated fine particulate matter(PM_(2.5))exposure with an increased cardiovascular ***,the underlying mechanism,particularly from the liver perspective,remains ***,the influence of chronic PM_(2.5)exposure on cardiovascular risk in mice fed a high-fat and high-cholesterol diet(HFCD)was studied by using a real-world PM_(2.5)exposure *** showed that PM_(2.5)exposure elevated the serum levels of nonhigh-density lipoprotein cholesterol(non-HDL-C)and oxidized low-density lipoprotein(oxLDL)in HFCD-fed mice,demonstrating increased cardiovascular *** investigate the molecular mechanism,lipidomics and metabolomics analyses were conducted and revealed that PM_(2.5)exposure enhanced lipid accumulation and disturbed purine metabolism and glutathione metabolism in the liver of HFCD-fed mice,contributing to the elevated non-HDL-C levels and intensified oxidative ***,PM_(2.5)exposure increased total cholesterol levels by upregulating Hmgcr expression and downregulating Cyp7a1 expression in the livers of HFCD-fed *** HDL-C level was reduced by inhibiting the hepatic Abca1 and Abcg1 expression and decreasing the levels of ApoA-I and ***,the PM_(2.5)-induced pro-oxidative environment impeded the oxLDL clearance and further triggered inflammation,in turn exacerbating oxidative stress and oxLDL *** study demonstrated a synergy of PM_(2.5)and HFCD on cardiovascular risk and illuminated the molecular mechanism in PM_(2.5)-susceptible populations.

关键词： PM_(2.5) HFCD Metabolomics Lipidomics Cardiovascular risk

InGaAs/InP台面型pin高速光电探测器

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微纳电子技术 2021年第3期58卷 196-200页

作者：韩孟序齐利芳尹顺政中国电子科技集团公司第十三研究所石家庄050051

介绍了一种应用于5G通信系统的高速光电探测器,设计了InP基台面型pin高速光电探测器材料结构,通过理论计算及软件模拟得到响应度和带宽随耗尽层厚度的变化规律,并对材料结构进行优化。制备了光敏面直径为20μm及耗尽层厚度分别为1.0、1.... 详细信息

介绍了一种应用于5G通信系统的高速光电探测器,设计了InP基台面型pin高速光电探测器材料结构,通过理论计算及软件模拟得到响应度和带宽随耗尽层厚度的变化规律,并对材料结构进行优化。制备了光敏面直径为20μm及耗尽层厚度分别为1.0、1.3和1.5μm的器件。对比响应度和带宽的理论值与实测值,结果表明实测值与理论值相符,当耗尽层厚度为1.3时响应度可达到0.89A/W,带宽可达23GHz以上,可满足25Gibit/s的传输速率要求。建立了探测器小信号模型对器件的带宽特性进行仿真,仿真结果与理论值一致,进一步验证理论分析的正确性。

关键词：光电探测器 InGaAs/InP 光通信响应度带宽小信号模型

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天然气的利用及开发

内蒙古石油化工 2001年第4期27卷 132-134页

作者：祁丽昉包头市化工设计研究所

阐述天然气在燃料和化工原料方面的广泛用途。

关键词：天然气利用技术路线天然气资源燃料