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浙江省水稻三种飞虱对杀虫剂的敏感性测定

浙江农业学报 2012年第4期24卷 642-646页

作者：何月平张珏锋肖鹏飞陈列忠陈建明浙江省植物有害生物防控重点实验室省部共建国家重点实验室培育基地浙江省农业科学院植物保护与微生物研究所浙江杭州310021

为了调查浙江省水稻飞虱抗药性现状,采用稻茎浸渍法测定了2010—2011年采自浙江省嘉兴市褐飞虱田间种群、杭州市白背飞虱种群以及长兴市和嘉兴市灰飞虱种群对几种常用杀虫剂的敏感性。测定结果表明,嘉兴种群褐飞虱对吡虫啉分别产生了61... 详细信息

为了调查浙江省水稻飞虱抗药性现状,采用稻茎浸渍法测定了2010—2011年采自浙江省嘉兴市褐飞虱田间种群、杭州市白背飞虱种群以及长兴市和嘉兴市灰飞虱种群对几种常用杀虫剂的敏感性。测定结果表明,嘉兴种群褐飞虱对吡虫啉分别产生了615.9～814.2倍抗性,对噻虫嗪产生了66.2倍抗性,对噻嗪酮具有13.0倍抗性,对烯啶虫胺尚敏感;相对于2008年种群,2010年杭州白背飞虱种群对毒死蜱的敏感性降低了9.5倍,说明白背飞虱对毒死蜱的抗性上升很快;相对于2007年种群,2010—2011年长兴灰飞虱对噻虫嗪、毒死蜱和吡虫啉的敏感性分别降低了1.6,2.5和2.3倍;噻虫嗪和毒死蜱对长兴种群灰飞虱的毒力略高于嘉兴种群。根据敏感性测定结果,提出了针对防治水稻飞虱的田间用药和抗药性治理的参考意见。

关键词：褐飞虱白背飞虱灰飞虱敏感性抗药性

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螺杆压缩机内密封齿间隙泄漏量的数值仿真

压缩机技术 2013年第4期 11-14,20页

作者：李敏王亚洲刁安娜肖鹏飞中国船舶重工集团公司第七一一研究所上海200072

通过CFD方法计算气体在三维齿顶间隙模型中的泄漏量,分析了气体在模型中的压力与速度分布,并研究了压差、密封齿的长度和高度对泄漏量的影响,并对现有的密封齿进行改进,仿真计算结果表明改进后的密封齿可以有效减少气体的泄漏量。

关键词：螺杆压缩机密封齿泄漏量齿顶间隙 CFD

Status of dark matter detection

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Frontiers of physics 2013年第6期8卷 794-827页

作者： xiao-Jun Bi peng-fei Yin Qiang Yuan Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

The detection of dark matter has made great progresses in recent years. We give a brief review on the status and progress in dark matter detection, including the progresses in direct detection, collider detection at LHC and focus on the indirect detection. The results from PAMELA, ATIC, Fermi-LAT and relevant studies on these results are introduced. Then we give the progress on indirect detection of gamma rays from Fermi-LAT and ground based Cerenkov telescopes. Finally the detection of neutrinos and constraints on the nature of dark matter are reviewed briefly.

关键词： dark matter annihilation cosmic rays gamma rays

Burden of mental disorders and risk factors in the Western Pacific region from 1990 to 2021

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World Journal of Psychiatry 2025年第1期15卷 93-105页

作者： Ya-Xin Xu xiao-Xuan Niu Wen-Chang Jia Jing Wen Xue-Lin Cheng Yan Han Ming-Hui peng Jing Zhou Yao Liu Sun-Fang Jiang xiao-Pan Li Department of Health Management Centre Zhongshan HospitalFudan UniversityShanghai 200030China Department of General Practice Zhongshan HospitalFudan UniversityShanghai 200030China Department of Nutrition Zhongshan HospitalFudan UniversityShanghai 200032China School of Public Health Fudan UniversityShanghai 200032China

BACKGROUND The burden of mental disorders(MD)in the Western Pacific Region(WPR)re-mains a critical public health concern,with substantial variations across demogra-phics and *** To analyze the burden of MD in the WPR from 1990 to 2021,along with associated risk factors,to reveal changing trends and emerging *** We used data from the Global Burden of Disease 2021,analyzing prevalence,incidence,and disability-adjusted life years(DALYs)of MD from 1990 to *** methods included age-standardisation and uncertainty analysis to address variations in population structure and data *** Between 1990 and 2021,the prevalence of MD rose from 174.40 million cases[95%uncertainty interval(UI):160.17-189.84]to 234.90 million cases(95%UI:219.04-252.50),with corresponding DALYs increasing from 22.8 million(95%UI:17.22-28.79)to 32.07 million(95%UI:24.50-40.68).During this period,the burden of MD shifted towards older age *** and anxiety disorders were predominant,with females showing higher DALYs for depressive and anxiety disorders,and males more affected by conduct disorders,attention-deficit hyperactivity disorder,and autism spectrum ***,New Zealand,and Malaysia reported the highest burdens,whereas Vietnam,China,and Brunei Darussalam reported the ***,childhood sexual abuse and bullying,and intimate partner violence emerged as significant risk *** This study highlights the significant burden of MD in the WPR,with variations by age,gender,and *** coronavirus disease 2019 pandemic has exacerbated the situation,emphasizing the need for a coordinated response.

关键词： Mental disorders Western pacific region Global Burden of Disease Risk factors Disability-adjusted life years

Dynamics and formation of vortices collapsed from ring dark solitons in a two-dimensional spin–orbit coupled Bose–Einstein condensate

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Frontiers of physics 2022年第4期17卷 185-193页

作者： peng-Hong Lu xiao-fei Zhang Chao-Qing Dai College of Optical Mechanical and Electrical EngineeringZhejiang A&F UniversityLin’an 311300China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China

We consider the dynamics and formation of vortices from ring dark solitons in a two-dimensional Bose–Einstein condensate with the Rashba spin–orbit coupling based on the time-dependent coupled Gross–Pitaevskii *** with previous results,the system exhibits complex dynamical behaviors in the presence of the spin–orbit *** the modulation of the spin–orbit coupling,not only the lifetime of ring dark solitons is greatly prolonged,but also their attenuation kinetics is significantly *** two shallow ring dark solitons with the equal strength of the spin–orbit coupling,the radius of ring dark solitons increases to a maximum value over time and then shrinks into a minimum *** to the effect of the snake instability,ring dark solitons split into a series of ring-like clusters of vortex pairs,which perform complex *** indicates that the system is strongly dependent on the presence of the spin–orbit ***,the effect of different initial modulation depths on the dynamics of ring dark solitons is investigated.

关键词： Bose–Einstein condensate Rashba spin–orbit coupling ring dark solitons vortex pairs

Structure and properties of indium-doped ZnO films prepared by RF magnetron sputtering under different pressures

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Rare Metals 2022年第9期41卷 3239-3243页

作者： Li-Ping peng A-Ling He Liang Fang xiao-fei Yang Research Center of Laser Fusion Chinese Academy of Engineering PhysicsMianyang621900China Department of Applied Physics Chongqing UniversityChongqing400030China Science and Technology Information Center Chinese Academy of Engineering PhysicsMianyang621900China

High conductive and transparent In-doped ZnO thin films were deposited on glass substrates by radio-frequency(RF)magnetron sputtering at 250℃.Argon gas was used as the sputtering gas,and its pressure varies from 0.1 to 4.0 *** influences of deposition pressure on the structural,electrical and optical properties of the films were investigated by means of X-ray diffraction(XRD),scanning electron microscope(SEM)and Hall and transmittance *** optical constant of the films was estimated from transmittance data using a nonlinear programming *** is found that the deposition pressure affects the properties of the films *** film deposited at 2.0 Pa shows the optimal crystal quality with a high transmittance of 85%in the visible range and a low resistivity of 2.4×10^(−3)Ω·cm and can thus be used as a transparent electrode.

关键词： ZnO thin films Transparent conductive oxide Optical constant Magnetron sputtering

Rational designed isostructural MOF for the charge-discharge behavior study of super capacitors

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Nano Research 2022年第7期15卷 6208-6212页

作者： Hong Chen xiao-fei Liu Hai-Yang Li peng peng Shuang-Quan Zang Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001China

In recent years,the rapid charge-discharge property of super capacitors based on metal-organic frameworks(MOFs)has seen excellent applications in energy storage ***,the purposeful design of high-performance electrodes for MOFderived super capacitors is still an urgent problem that needs to be ***,we rationally design and prepare three MOFs with the same crystal configuration and controllable functional *** the combination of rigorous experiment and calculation,we have verified the effects of the specific surface area of the electrode material as well as the binding energy between the electrode material and the electrolyte ions on the performance of the super *** work not only extends the application of MOFs,but also provides a model-material platform for the study of charge–discharge behavior of MOF-based super capacitors,creating a way of thinking for the selection and design of MOF materials for energy storage applications.

关键词： Eu-metal-organic framework(Eu-MOF) super capacitor rational design controllable charge-discharge behavior

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丁二酸酐性能及各种生产工艺介绍

广州化工 2014年第12期42卷 182-183页

作者：潘玉莹李江胡利娜肖鹏飞河南能源化工集团精细化工有限公司河南鹤壁458000 河南省东方集团防腐有限公司河南新乡453400

丁二酸酐是一种重要的精细化工原料,用途广泛,尤其它的衍生物更是附加值高的精细化工产品,全球丁二酸酐的生产工艺主要有丁二酸脱水法、顺丁烯二酸酐催化加氢法。本文章主要介绍了丁二酸酐的性能、用途和生产工艺技术,并对生产工艺技术... 详细信息

丁二酸酐是一种重要的精细化工原料,用途广泛,尤其它的衍生物更是附加值高的精细化工产品,全球丁二酸酐的生产工艺主要有丁二酸脱水法、顺丁烯二酸酐催化加氢法。本文章主要介绍了丁二酸酐的性能、用途和生产工艺技术,并对生产工艺技术进行了比较,顺丁烯二酸酐熔融催化加氢法由于生产成本和综合能耗较低,是最具竞争力,发展前景看好的一种方法。

关键词：丁二酸酐性能用途生产工艺技术

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四川郫县土壤耕层有机质时空变异特征

土壤通报 2004年第3期35卷 261-263页

作者：魏甦张世熔邓良基刘英华肖鹏飞四川农业大学资源环境学院四川雅安625014

在ArcGlS8.1软件系统平台上,通过分析四川郫县土壤耕层1981年93个样点和2002年46个样点的有机质含量,研究了该县有机质的时空变化特征。结果表明,郫县耕层土壤有机质平均含量从1981年的26.4gkg-1增加到2002年的28.2gkg-1。其区域变化差... 详细信息

在ArcGlS8.1软件系统平台上,通过分析四川郫县土壤耕层1981年93个样点和2002年46个样点的有机质含量,研究了该县有机质的时空变化特征。结果表明,郫县耕层土壤有机质平均含量从1981年的26.4gkg-1增加到2002年的28.2gkg-1。其区域变化差异为:东部略微下降,中部与西部增加。近21年来水稻土有机质平均含量仅少量增加,而黄壤则增幅明显。距成都市区的远近和推广秸秆还田程度是引起耕层土壤有机质含量时空变异的主要原因。

关键词：郫县土壤耕层有机质时空变异特征秸秆还田程度土壤肥力