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Effects of different rotation patterns on the occurrence of clubroot disease and diversity of rhizosphere microbes

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Journal of Integrative Agriculture 2020年第9期19卷 2265-2273页

作者： YANG xiao-xiang huang xiao-qin WU Wen-xian XIANG Yun-jia DU Lei ZHANG Lei LIU Yong Institute of Plant Protection Sichuan Academy of Agricultural SciencesChengdu 610066P.R.China Key Laboratory of Integrated Pest Management on Crops in Southwest Ministry of Agriculture and Rural AffairsChengdu 610066P.R.China

Clubroot disease, caused by Plasmodiophora brassicae, is one of the most destructive soil-borne diseases in cruciferous crops worldwide. New strategies are urgently needed to control this disease, as no effective disease-resistant varieties or chemical control agents exist. Previously, we found that the incidence rate and disease index of clubroot in oilseed rape decreased by 50 and 40%, respectively, when oilseed rape was planted after soybean. In order to understand how different rotation patterns affect the occurrence of clubroot in oilseed rape, high-throughput sequencing was used to analyze the rhizosphere microbial community of oilseed rape planted after leguminous (soybean, clover), gramineous (rice, maize) and cruciferous (oilseed rape, Chinese cabbage) crops. Results showed that planting soybeans before oilseed rape significantly increased the population density of microbes that could inhibit P. brassicae (e.g., Sphingomonas, Bacillus, Streptomyces and Trichoderma). Conversely, consecutive cultivation of cruciferous crops significantly accumulated plant pathogens, including P. brassicae, Olpidium and Colletotrichum (P<0.05). These results will help to develop the most effective rotation pattern for reducing clubroot damage.

关键词： oilseed rape clubroot Gramineae Leguminosae Cruciferae rhizosphere soil

Nucleation Mechanism of Polycrystalline Diamond Film Deposited on Ceramic Alumina by Microwave Plasma Chemical Vapor Deposition

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Chinese Physics Letters 1996年第7期13卷 557-560页

作者： XIA Yi-ben MO Yao-wu WANG Yu huang xiao-qin CHEN Da-ming WANG Hong College of Materials Science and Engineering Shanghai UniversityShanghai 201800

Polycrystalline diamond films have been deposited on ceramic alumina substrates by microwave plasma chemical vapor deposition *** of the emission spectra in the microwave plasma with the microwave power and the vapor pressure in the reaction chamber is studied,*** between the hydrogen atomic spectra and the average energy of the electrons in the plasma,as well as the mechanism of diamond film deposition on ceramic alumina are discussed.

关键词： ceramic microwave Diamond

Construction of ecological environment of oasis in qingtongxia Irrigation District

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Journal of Groundwater Science and Engineering 2014年第3期2卷 78-84页

作者： huang xiao-qin YU Yan-qing SUN Yong-liang Institute of Hydrogeology and Engineering and Environmental Geology of Ningxia

Oasis is the core area of social and economic development in the arid western regions,and is also a territory with prominent ecological environmental problems. Because of the unreasonable development and utilization of soil and water resources,the ecological environment of oasis in qingtongxia Irrigation District is threatened by soil salinization,shrinkage of lakes and wetlands,and deterioration of water environment. As for these environmental problems,the direct cause is the loss of regulation of groundwater depth or serious pollution of water caused by man-made irrational exploitation,and the root cause lies in shortage of water resources and unreasonable allocation of water resources. In this regard,it is believed that the primary task for the construction ecological environment of oasis in qingtongxia Irrigation District is to adjust the allocation structure of water resources and to ease the contradiction between supply and demand of water resources,for which the direct means is to carry out dynamic control of water and salt based on the ecological landscape structure and land type in the Irrigation District in accordance with local conditions.

关键词： Oasis Ecological environment Allocation of water resources qingtongxia Irrigation District

语用规则与跨文化语用失误——汉语第二语言言语行为语用失误原因及对策

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北京师范大学学报（社会科学版） 2013年第2期 36-44页

作者：黄晓琴北京师范大学汉语文化学院北京100875

在与汉语母语者进行普通国际交往或学习汉语过程中,英语母语者往往在恭维与赞美、问候与寒暄、请求与建议、致谢与致歉、邀请与拒绝等常见言语行为方面出现社交语用失误。如果从跨文化交际角度重新审视中英两种语言的语用规则,便可发现... 详细信息

在与汉语母语者进行普通国际交往或学习汉语过程中,英语母语者往往在恭维与赞美、问候与寒暄、请求与建议、致谢与致歉、邀请与拒绝等常见言语行为方面出现社交语用失误。如果从跨文化交际角度重新审视中英两种语言的语用规则,便可发现导致语用失误的三个内在原因:其一,中英语之间有不同的语用规则;其二,相同的语用规则其主次排序及其动态变化却不同;其三,语用规则与不同言语行为之间匹配错位。有鉴于此,有必要了解中英语语用规则的差异,正确选择不同言语行为所匹配的语用规则,积极调适语用规则的主次排序及其动态变化,从而避免言语行为语用失误,以获得预期的交际效果。

关键词：语用规则社交语用失误言语行为语用失误

存在关节力矩输出死区及外部干扰的漂浮基空间机械臂积分滑模神经网络自适应控制

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计算力学学报 2018年第6期35卷 713-718页

作者：黄小琴陈力福州大学机械工程及自动化学院福州350116 福建省高端装备制造协同创新中心福州350116

探讨了载体位置和姿态都不受控时,漂浮基空间机械臂在带有关节力矩输出死区及外部干扰情况下轨迹跟踪的控制算法设计问题。死区与外部干扰影响系统的跟踪精度与稳定性。为此引入积分型切换函数,减少外部干扰引起的稳态误差,并利用径向... 详细信息

探讨了载体位置和姿态都不受控时,漂浮基空间机械臂在带有关节力矩输出死区及外部干扰情况下轨迹跟踪的控制算法设计问题。死区与外部干扰影响系统的跟踪精度与稳定性。为此引入积分型切换函数,减少外部干扰引起的稳态误差,并利用径向基函数神经网络逼近动力学方程的未知部分,设计了一种积分滑模神经网络控制方案。控制算法的优点是,在死区斜率与边界参数不确定及最优逼近误差上确界未知的条件下,可以利用最优逼近误差、死区及干扰的补偿项来消除影响。李亚普诺夫稳定性分析证明了闭环系统的稳定性,且轨迹跟踪误差将收敛到0的某个小邻域内。仿真算例证实了该控制算法的有效性,实现了空间机械臂的轨迹跟踪控制。

关键词：漂浮基空间机械臂系统关节力矩输出死区外部干扰积分滑模神经网络轨迹跟踪

The Hilbert expansion of the Boltzmann equation in the incompressible Euler level in a channel

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Science China Mathematics 2025年第1期68卷 39-88页

作者： Feimin huang Weiqiang Wang Yong Wang Feng xiao Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of Sciences Key Laboratory of Computing and Stochastic Mathematics (Ministry of Education) School of Mathematics and StatisticsHunan Normal University

The study of the hydrodynamic limit of the Boltzmann equation with physical boundary is a challenging problem due to the appearance of the viscous and Knudsen boundary *** this paper,the hydrodynamic limit from the Boltzmann equation with the specular reflection boundary condition to the incompressible Euler equations in a channel is *** on the multi-scaled Hilbert expansion,the equations with boundary conditions and compatibility conditions for interior solutions,and viscous and Knudsen boundary layers are derived under different scaling,***,some uniform estimates for the interior solutions,and viscous and Knudsen boundary layers are *** the help of the L2-L∞framework and the uniform estimates obtained above,the solutions to the Boltzmann equation are constructed by the truncated Hilbert expansion with multiscales,and hence the hydrodynamic limit in the incompressible Euler level is justified.

关键词： Boltzmann equation incompressible Euler equations hydrodynamic limit Hilbert expansion specular reflection boundary condition viscous boundary layer Knudsen boundary layer

烧伤患者耐药鲍曼不动杆菌感染的抗菌药物选择

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上海交通大学学报（医学版） 2012年第6期32卷 815-819页

作者：黄晓琴郇京宁上海交通大学医学院附属瑞金医院烧伤整形科上海200025

耐药性鲍曼不动杆菌是严重烧伤感染的重要致病菌之一,其耐药机制与细菌产生多种β-内酰胺酶、膜药物通透性缺陷、药物外排系统和细菌生物膜形成等有关。针对烧伤创面鲍曼不动杆菌感染,磺胺嘧啶银霜、磺胺米隆溶液和银离子敷料是良好的... 详细信息

耐药性鲍曼不动杆菌是严重烧伤感染的重要致病菌之一,其耐药机制与细菌产生多种β-内酰胺酶、膜药物通透性缺陷、药物外排系统和细菌生物膜形成等有关。针对烧伤创面鲍曼不动杆菌感染,磺胺嘧啶银霜、磺胺米隆溶液和银离子敷料是良好的局部外用药物。在耐药鲍曼不动杆菌脓毒症的治疗方面,可选择多黏菌素、舒巴坦、米诺环素和替加环素。但是,尤为重要的手段是联合应用抗生素。此外,该文还讨论了某些新型药物的抗耐药鲍曼不动杆菌的作用。

关键词：鲍曼不动杆菌烧伤感染、耐药性抗生素

Photoinduced radical sulfur dioxide insertion with asymmetric cyclization of alkenes: accessing β-chiral sulfones bearing S-stereocentric cyclic sulfinamides

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Science China Chemistry 2025年第1期68卷 257-263页

作者： Jiapian huang Chenxin Wang Xu Wang xiaoyu Zhou Wei xiao Jie Wu School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies Taizhou University State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences School of Chemistry and Chemical Engineering Henan Normal University

The generation of various β-chiral sulfones bearing chiral cyclic sulfinamides through photoredox-catalyzed sulfur dioxide insertion with asymmetric radical cyclization is described. This method features a broad substrate scope and excellent stereospecificity. Computational studies reveal that the dispersion interaction between sulfinyl group and CH2SO2Ph group plays a crucial role in the stereoselectivity control.

关键词： β-chiral sulfones chiral cyclic sulfinamides sulfur dioxide insertion asymmetric radical cyclization stereoselectivity

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颅脑损伤患者下呼吸道医院感染相关因素分析

中华医院感染学杂志 2005年第2期15卷 152-154页

作者：黄晓琴安庆市立医院安徽安庆246003

目的　找出颅脑损伤患者下呼吸道医院感染的相关因素,提出控制措施。方法　应用病例对照研究法,将神经外科64例下呼吸道医院感染病例设为感染组,随机抽样63例未发生医院感染的为非感染组,拟定下呼吸道医院感染的相关因素,设置统一的两... 详细信息

目的　找出颅脑损伤患者下呼吸道医院感染的相关因素,提出控制措施。方法　应用病例对照研究法,将神经外科64例下呼吸道医院感染病例设为感染组,随机抽样63例未发生医院感染的为非感染组,拟定下呼吸道医院感染的相关因素,设置统一的两组表格进行回顾性调查分析。结果　下呼吸道医院感染与患者年龄、性别、慢性疾病无相关性;而与患者气管切开、气管插管、吸痰、意识障碍、插入胃管、应激性溃疡、全麻手术、亚低温治疗有相关性。结论　注意无菌操作、保持呼吸道通畅、作好预防性消毒与隔离是控制下呼吸道医院感染最有效的措施。

关键词：颅脑损伤下呼吸道医院感染预防控制