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Synchrotron Radiation Topographic Study on the Dislocations in Lithium Tetraborate Crystal

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Chinese Physics Letters 1991年第2期8卷 78-81页

作者： yang Ping JIANG Shusheng WANG Luchun ZHAO Jiyong JIANG Xiaoming JIANG Jianhua CHAO Zhiyu TIAN Yulian XIAN Dingchang yang wenjuan yang Yao Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210008 Synchrotron Radiation Laboratory IHEPBeijing 100039 Centre of Materials Analysis Nanjing UniversityNanjing 210008

The dislocations in lithium tetraborate crystal have been investigated by means of synchrotron radiation white beam topography in BSRL(Beijing Synchrotron Radiation Laboratory).The Burgers'vectors of these dislocation... 详细信息

关键词： borate Crystal Lithium

Promotional Effect of CoO(OH) on Selective Hydrogenation of Maleic Anhydride to γ-Butyrolactone over Supported Ruthenium Catalyst

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China Petroleum Processing & Petrochemical Technology 2015年第4期17卷 96-101页

作者： Zhou Yafen Wang Qing Wang Manman yang wenjuan Zhou Limei Ma Xiaoyan Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering China West Normal University College of Materials and Chemistry & Chemical Engineering Chengdu University of Technology

A decorated ruthenium catalyst was prepared by the coprecipitation method and used for the selective hydrogenation of maleic anhydride(MA) to γ-butyrolactone(GBL). The as-prepared catalyst was characterized by XRD, TGDTG and N2 adsorption techniques. The characterization tests revealed that the catalyst carrier was composed of monoclinic zirconia(m-ZrO2) and hydroxyl cobalt oxide(CoO(OH)). The hydrogenation results showed that the content of CoO(OH), the reaction temperature, the hydrogen pressure and the reaction time significantly affected the catalytic selectivity to GBL. The promotional effect of CoO(OH) was remarkable, which led to an obvious increase in GBL selectivity. An 100% MA conversion and 92.0% selectivity to GBL were achieved over the Ru/ZrO2-CoO(OH)(35%) catalyst in water solvent under the conditions involving a reaction temperature of 180 ℃, a hydrogen pressure of 3.0 MPa, and a reaction time of 6 h.

关键词： ruthenium catalyst hydrogenation maleic anhydride γ-butyrolactone

S-Nitrosoglutathion Reductase Activity Modulates the Thermotolerance of Seeds Germination by Controlling ABI5 Stability under High Temperature

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Phyton-International Journal of Experimental Botany 2021年第4期90卷 1075-1087页

作者： Wenjie Wei Yulan Hu wenjuan yang Xiaoli Li Jiali Wei Xiangyang Hu Ping Li Shanghai Key Laboratory of Bio-Energy Crops School of Life SciencesShanghai UniversityShanghai200444China

Seed germination or dormancy status is strictly controlled by endogenous phytohormone and exogenous environment *** acid(ABA)is the important phytohormone to suppress seed *** high temperature(HT)also suppressed seed germination,or called as secondary seed dormancy,through upregulating ABI5,the essential component of ABA signal *** result shows that appropriate nitric oxide(NO)breaks seed dormancy through triggering S-nitrosoglutathion reductase(GSNOR1)-dependent S-nitrosylation modification of ABI5 protein,subsequently inducing the degradation of *** we found that HT induced the degradation of GSNOR1 protein and reduced its activity,thus accumulated more reactive nitrogen species(RNS)to damage seeds ***,HT increased the S-nitrosylation modification of GSNOR1 protein,and triggered the degradation of GSNOR1,therefore stabilizing ABI5 to suppress seed ***,the ABI5 protein abundance was lower in the transgenic line overexpressing GSNOR1,but higher in the gsnor mutant after HT *** analysis showed that GSNOR1 affected seeds germination through ABI5 under *** together,our data reveals a new mechanism by which HT triggers the degradation of GSNOR1,and thus stabilizing ABI5 to suppress seed germination,such mechanism provides the possibility to enhance seed germination tolerance to HT through genetic modification of GNSOR1.

关键词： Seed germination ambient high temperature GSNOR1 S-nitrosoglutathion ABI5

Pillar[5]arene-based [3]rotaxanes: Convenient construction via multicomponent reaction and pH responsive self-assembly in water

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Chinese Chemical Letters 2020年第6期31卷 1550-1553页

作者： Junmei Ye Runmiao Zhan wenjuan yang Ying Han Hao Guo Ju Xie Chaoguo Yan Yong Yao School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 213300China School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China

Four pillar[5]arene based[3]rotaxanes(1-4)involving two 1,4-diethoxypillar[5]arene(DEP5)rings and a dumbbell-shaped component were successfully *** dumbbell-shape molecules contain one longer bridge,two triazole sites and two multicomponent *** threading DEP5 rings with linear guests(G1-G4)which contain two benzaldehyde units,the base catalyzed three-component reaction of dimedone,malononitrile and benzaldehyde was performed to construct the stoppers and connected the pseudorotaxanes with stoppers to generate *** structures of[3]rotaxanes and their self-assembly behaviors were characterized by 1 H NMR,13C NMR,NOESY,HR-ESI-MS,DLS and TEM *** hope that pillar[5]arene based[3]rotaxanes may have potential applications in drug delivery systems and molecular devices.

关键词： Pillararene Rotaxane Multicomponent reaction Molecular machine Self-assembly

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洞庭湖总磷水环境污染分析

湖南理工学院学报（自然科学版） 2024年第3期37卷 64-70页

作者：欧阳美凤尹宇莹高吉权阳文娟朱丹丹湖南省洞庭湖生态环境监测中心湖南岳阳414000 湖南省长沙生态环境监测中心湖南长沙410000 湖南省岳阳生态环境监测中心湖南岳阳414000

总磷已成为洞庭湖湖区主要污染物,为打赢洞庭湖总磷污染控制与削减攻坚战,以洞庭湖湖体、入湖河流以及出口的断面为对象,监测其2016年至2022年水质,进而探明洞庭湖流域总磷时空变化规律.结果表明,湖体总磷年均浓度呈先降后升再降趋势;... 详细信息

总磷已成为洞庭湖湖区主要污染物,为打赢洞庭湖总磷污染控制与削减攻坚战,以洞庭湖湖体、入湖河流以及出口的断面为对象,监测其2016年至2022年水质,进而探明洞庭湖流域总磷时空变化规律.结果表明,湖体总磷年均浓度呈先降后升再降趋势;按考核市州划分三个湖区,总磷年均浓度东洞庭湖(岳阳湖区)>西洞庭湖(常德湖区)>南洞庭湖(益阳湖区);湘江、资江、沅江、澧水四水入湖口处总磷年均浓度总体呈下降趋势,总体明显低于湖体浓度,建议重点防控湖区总磷农业面源污染.

关键词：洞庭湖总磷面源污染

Connections Between Induction Generator Effect and Open-loop Modal Proximity to Cause Sub-synchronous Oscillations in Series-compensated Power System

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 963-973页

作者： wenjuan Du yang Wang H.F.Wang Tao Zhao Tim Littler College of Electrical Engineering Sichuan UniversityChengduChina School of Electrical Engineering the Queen’s University of BelfastBelfastUK IEEE

The induction generator effect(IGE)and the openloop modal proximity(OLMP)are two different reasons why subsynchronous oscillations(SSOs)in a series-compensated power system(SCPS)may *** IGE attributes the growing SSOs to negative resistance,while the OLMP explains the SSO mechanism from the standpoint of modal *** this paper,we investigate the connections between the IGE and the OLMP through equivalent RLC circuit and open-loop modal *** investigation is conducted for two types of seriescompensated power systems where either a synchronous generator or a DFIG is connected at the sending *** investigation reveals the conditions,in which the IGE and the OLMP may jointly cause the growing SSOs,i.e.,both the IGE and the OLMP can explain why the growing SSOs ***,the investigation indicates that the IGE and the OLMP may be totally irrelevant and lead to growing SSOs *** implies that it is possible that in a SCPS,the growing SSOs are only due to the IGE,and the OLMP is non-existent,and vice ***,when the growing SSOs occurs in a SCPS,examination based on both the IGE and the OLMP should be carefully conducted in order to find if the oscillatory instability is due to the IGE,or the OLMP,or both of them.

关键词： Induction generator effect open-loop modal proximity series compensation sub-synchronous oscillations

国家公园景观视觉美学质量对公众生理反应的影响

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自然保护地 2024年第1期4卷 13-24页

作者：王鹏俞飞何友均李乐高志强杨文娟中国林业科学研究院林业科技信息研究所北京100091 浙江农林大学林业与生物技术学院杭州311300 中国林业科学研究院热带林业研究所广州510520 西昌学院农业科学学院四川西昌615000

【目的】评估景观视觉美学质量及其对公众的生理影响,为构建国家公园景观资源评价制度提供决策参考。【方法】采用美景度(Scenic beauty evaluation,SBE)、K−均值聚类、ArcGis空间分析与生理反应测定实验等技术方法,探讨钱江源国家公园... 详细信息

【目的】评估景观视觉美学质量及其对公众的生理影响,为构建国家公园景观资源评价制度提供决策参考。【方法】采用美景度(Scenic beauty evaluation,SBE)、K−均值聚类、ArcGis空间分析与生理反应测定实验等技术方法,探讨钱江源国家公园景观视觉美学质量及其对公众生理反应的影响。【结果】①钱江源国家公园景观视觉美学质量处于中高水平,文化景观(SBE 76.33)>水域景观(SBE 76.15)>森林景观(SBE 74.57)>乡村景观(SBE 72.29);②钱江源国家公园视觉美学质量呈现中部高、南北低的空间格局特征,游憩展示区(SBE 76.84)>传统利用区(SBE 75.63)>生态保育区(SBE 74.57)>核心保护区(SBE 69.16);③景观视觉美学感知会使人出现皮肤电导水平下降、呼吸频率增加的生理反应变化。美学质量最高的文化景观,其呼吸频率变化值最大(0.907 resp);美学质量最低的乡村景观,其呼吸频率变化值最小(0.528 resp)。【结论】相比景观面积规模,景观元素的多样性以及元素间的视觉协调性更能影响景观美学质量评价,并促使公众皮肤电导率和呼吸频率等生理指标发生变化。建议从视觉感官与促进人体健康等角度,加强多功能景观管理,尤其是游憩林与康养林的精细化经营。

关键词：国家公园景观资源评价景观美学美景度生理反应

Benefit of aerosol reduction to winter wheat during China's clean air action:A case study of Henan Province

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Journal of Environmental Sciences 2024年第7期141卷 90-101页

作者： yang Bai Pengfei Zhao Xueyang Chen Lijun Wang wenjuan Chang Jianzhong Guo Jiayao Wang College of Geography and Environmental Science Henan UniversityKaifeng 475004China Henan Industrial Technology Academy of Spatio-Temporal Big Data Henan UniversityZhengzhou 475000China Henan Technology Innovation Center of Spatio-Temporal Big Data Henan UniversityZhengzhou 450046China Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Henan University) Ministry of EducationKaifeng 475000China

A strongly declining aerosol radiative effect has been observed in China since 2013 after implementing the clean air action,yet its impact on wheat(Triticum aestivum L.)production remains *** use satellite measures and a biophysical crop model to assess the impact of aerosol-induced radiative perturbations on winter wheat production in the agricultural belt of Henan province from 2013 to *** calibrating parameters with the extended Fourier Amplitude Sensitivity Test(EFAST)and the generalized likelihood uncertainty estimation(GLUE)method,the DSSAT CERES-Wheat model was able to simulate crop biomass and yield more *** found that the aerosol negatively impacted wheat biomass by 21.87%and yield by 22.48%from 2006 to 2018,and the biomass effects from planting to anthesis were more significant compared to anthesis to *** to the strict clean air action,under all-sky conditions,the surface solar shortwave radiation(SSR)in 2018 increased by about 7.08%over 2006-2013 during the wheat growing *** a result of the improvement of crop photosynthesis,winter wheat biomass and yield increased by an average of 5.46%and 2.9%,*** findings show that crop carbon uptake and yield will benefit from the clean air action in China,helping to ensure national food and health security.

关键词： Haze pollution Clean air action Aerosol-induced radiative perturbation Wheat production DSSAT model

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大型仪器共享平台内涵式发展路径研究

实验室科学 2024年第2期27卷 203-209页

作者：方三华刘丽杨丹杨文娟黄莹莹李艳伟刘双双浙江大学医学院公共技术平台浙江杭州310058

大型仪器共享平台(以下简称:平台)是高校重要的科研支撑体系,探索平台内涵式发展路径,实现平台高质量和高水平发展,对于支撑和推动高校“双一流”建设具有重要意义。以浙江大学医学院大型仪器共享平台发展为例,阐述平台外延式发展中出... 详细信息

大型仪器共享平台(以下简称:平台)是高校重要的科研支撑体系,探索平台内涵式发展路径,实现平台高质量和高水平发展,对于支撑和推动高校“双一流”建设具有重要意义。以浙江大学医学院大型仪器共享平台发展为例,阐述平台外延式发展中出现的问题、平台内涵式发展的路径及成效。通过创新组织管理构架、建立先进的实验仪器管理系统、创新大型仪器设备论证和采购制度、提升研究生大型仪器操作技能和加强实验技术队伍建设等内涵式发展内容与途径,解决了外延式发展中出现的问题,大幅提高平台运行效率,提升了平台服务能力和水平,在开放共享服务、大型仪器高效使用、研究生培养、仪器新功能和新技术开发等方面都取得优异的成绩,为科学研究、研究生培养和社会服务提供了良好的技术支撑。

关键词：大型仪器共享平台内涵式发展平台效率服务水平人才培养