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Evaluation of fall armyworm resistance in maize germplasm lines using visual leaf injury rating and predator survey

Insect Science 2014年第5期21卷 541-555页

作者： Xinzhi Ni wenwei xu Michael H. Blanco W. Paul Williams USDA-ARS Crop Genetics and Breeding Research Unit University of Georgia-Tifton Tifton GA 31793 Agricultural Research &Extension Center Texas A&M University Lubbock TX 79403 USDA-ARS Plant Introduction Research Unit Iowa State UniversityAmes IA 50011 Corn Host Plant Resistance Research Unit USDA-ARS Mississippi State MS 39762 USA

After examining ear-colonizing pest resistance, 20 maize lines from the USDA- ARS Germplasm Enhancement of Maize （GEM） Program were evaluated for whorl-feeding fall armyworm （FAW）（Spodopterafrugiperda） resistance using 4 maize inbred lines as the resistant and susceptible controls. Both FAW injury ratings at 7- and 14-d after infestation, and predator abundance and diversity at whorl stage （V6-V8） were recorded in 2009 and 2010. The survey of the diversity and abundance of predators in each experimental plot were conducted 7 d after the FAW infestation. Of the 20 germplasm lines examined, 3 of them （i.e., entries 9, 15, and 19 that were derived from tropical maize germplasm lines were originated from Uruguay, Cuba, and Thailand, respectively） were identified as the best FAW-resistant germplasm lines using the leaf injury ratings and predator survey data. In addition, the abundance and diversity of the predators were greater in 2010 than in 2009, which might have caused the low level of the FAW injury ratings on all lines examined in 2010. The 2-year data showed that the FAW injury ratings were negatively correlated to the predator abundance and diversity, which is also influence by genotype × environment interactions. The findings suggested that tropical germplasm is an important source of native resistance to the FAW and the corn earworm. At the same time, the maize genotype x environment interaction （e.g., predator attractiveness, and varying weather conditions） should be included in the multiple-year evaluations of insect and disease resistance of maize germplasm lines under field conditions.

关键词： field screening genotype × environment interactions multiple insect resistance predator abundance and diversity whorl-feeding

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Integrated pest management is the lucrative bridge connecting the ever emerging knowledge islands of genetics and ecology

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Insect Science 2014年第5期21卷 537-540页

作者： Xinzhi Ni Zhongren Lei Kanglai He Xin Li Xianchun Li wenwei xu USDA-ARS Crop Genetics and Breeding Research Unit Tifton GA 31793 USA State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 China College of Plant Protection Northwest A&F University Yangling Shaanxi 712100 China Department of Entomology University of Arizona Tucson AZ 85721 USA Texas A&M AgriLife Research Texas A&M University System Lubbock TX 79403 USA

Integrated pest management （IPM） has long been considered a profit- and product （or technology）-driven multidisciplinary research field that maximizes crop yield and minimizes pest-inflicted economic losses. The introduction of transgenic crops has revolutionized crop protection and IPM by combining crop protection and genetics into one entity-the seed. Before the arrival of transgenic technology, studies of insect-plant interactions were frequently categorized under the field of ecology, and IPM programs were then the product of applied ecological research on suppressing pest populations in crop or livestock production.

关键词： connecting proposed identifying

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Synthesis and Evaluation of the Analogues of Penicillide against Cholesterol Ester Transfer Protein

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Chinese Journal of Chemistry 2013年第3期31卷 355-370页

作者： Qiao Zhang Chunlin Deng Lisong Fang wenwei xu Qun Zhao Jiange Zhang Yiping Wang Xinsheng Lei School of Pharmacy Fudan University Shanghai 201203 China Department of Medicinal Chemistry School of Pharmaceutical Science Zhengzhou University Zhenezhou Henan 450001 China Shanghai Institute of Materia Medica Chinese Aeademy of Sciences Shanghai 201203 China

A series ofpenicillide analogues, with modifications at C-3 and C-9 positions, are synthesized as potential cho-lesteryl ester transfer protein （CETP） inhibitors. The preliminary in vitro inhibition assay provided s... 详细信息

关键词： cross-coupling lactone inhibitors cholesterol ester transfer protein penicillide

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Partners in Profit

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ChinAfrica 2015年第12期7卷 40-40,42页

作者： xu wenwei Ji Zhenyong

In September, Ningbo Construction, a Chinese company listed on Shanghai Stock Exchange, acquired South African Anglorand Financial Services Group. Anglorand Securities, part of the group, became the first South Africa... 详细信息

关键词： construction industry range of

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Adjunctive treatment with high frequency repetitive transcranial magnetic stimulation for the behavioral and psychological symptoms of patients with Alzheimer＇s disease： a randomized, double-blind, sham-controlled study

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上海精神医学 2015年第5期27卷 280-288页

作者： Yue WU wenwei xu Xiaowei LIU Qing xu Li TANG Shuyan WU Department of Psychiatry Wuxi Mental Health Center Nanjing Medical University Wuxi China Wuxi Tongren International Rehabilitation Hospital Naniing Medical University Wuxi. China

BACKGROUND:Behavioral and psychological symptoms of dementia (BPSD) occur in 70-90% of patients at different stages of Alzheimer's Disease (AD), but the available methods for managing these problems are of limited effectiveness.;OBJECTIVE:Assess the effects of high-frequency repetitive transcranial magnetic stimulation (rTMS), applied over the left dorsolateral prefrontal cortex (DLPFC), on BPSD and cognitive function in persons with AD.;METHODS:Fifty-four patients with AD and accompanying BPSD were randomly divided into an intervention group (n=27) and a control group (n=27). In addition to standard antipsychotic treatment, the intervention group was treated with 20Hz rTMS five days a week for four weeks, while the control group was treated with sham *** Behavioral Pathology in Alzheimer's Disease Rating Scale (BEHAVE-AD), the Alzheimer's Disease Assessment Scale-Cognitive (ADAS-Cog), and the Treatment Emergent Symptom Scale (TESS) were administered by raters who were blind to the group assignment of patients before and after four weeks of treatment.;RESULTS:Twenty-six subjects from each group completed the study. After four weeks of antipsychotic treatment with adjunctive real or sham rTMS treatment, the mean (sd) total BEHAVE-AD scores and mean total ADAS-Cog scores of both groups significantly decreased from baseline. After adjusting for baseline values, the intervention group had significantly lower scores (i.e., greater improvement) than the control group on the BEHAVE-AD total score, on five of the seven BEHAVE-AD factor scores (activity disturbances, diurnal rhythm, aggressiveness, affective disturbances, anxieties and phobias), on the ADAS-Cog total score, and on all four ADAS-Cog factor scores (memory, language, constructional praxis, and attention). The proportion of individuals whose behavioral symptoms met a predetermined level of improvement (i.e., a drop in BEHAVE-AD total score of > 30% from baseline) in the intervention group was greater than t

关键词：阿尔茨海默病药物治疗人的行为经颅磁刺激症状患者高频心理

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从追赶到领先——华为的创新之路

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中国科学院院刊 2019年第10期34卷 1108-1111页

作者：徐文伟华为技术有限公司

华为技术有限公司(以下简称“华为”)成立于1987年,得益于改革开放,经过30多年的拼搏努力,我们把华为这艘大船划到了“与世界同步的起跑线”上。华为从小到大、从大到强、从国际化到全球化的全过程,就是基于创新的成功。

关键词：创新信息产业瓶颈开放式智能社会

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Evaluation of spatial and temporal patterns of insect damage and aflatoxin level in the pre-harvest corn fields to improve management tactics

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Insect Science 2014年第5期21卷 572-583页

作者： Xinzhi Ni Jeffrey P. Wilson Michael D. Toews G. David Buntin R. Dewey Lee Xin Li Zhongren Lei Kanglai He wenwei xu Xianchun Li Alisa Huffaker Eric A. Schmelz USDA-ARS Crop Genetics and Breeding Research Unit Department of Entomology University of Georgia Tifton Department of Entomology University of Georgia Griffin Department of Crop and Soil Sciences University of Georgia Tifton Georgia USA Collegeof Plant Protection Northwest A&F University Yangling Shaanxi State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing China Texas A&M University Texas AgriLife LubbockTexas Department of Entomology University of Arizona Tucson Arizona USDA-ARS Center for Medical Agricultural and Veterinary Entomology Gainesviile Florida USA

Spatial and temporal patterns of insect damage in relation to aflatoxin contamination in a corn field with plants of uniform genetic background are not well understood. After previous examination of spatial patterns of insect damage and aflatoxin in pre-harvest corn fields, we further examined both spatial and temporal patterns of cob- and kernel- feeding insect damage, and aflatoxin level with two samplings at pre-harvest in 2008 and 2009. The feeding damage by each of the ear/kernel-feeding insects （i.e., corn earworm/fall armyworm damage on the silk/cob, and discoloration of corn kernels by stink bugs） and maize weevil population were assessed at each grid point with five ears. Sampling data showed a field edge effect in both insect damage and aflatoxin contamination in both years. Maize weevils tended toward an aggregated distribution more frequently than either corn earworm or stink bug damage in both years. The frequency of detecting aggregated distribution for aflatoxin level was less than any of the insect damage assessments. Stink bug damage and maize weevil number were more closely associated with aflatoxin level than was corn earworm damage. In addition, the indices of spatial-temporal association （χ） demonstrated that the number of maize weevils was associated between the first （4 weeks pre-harvest） and second （1 week pre-harvest） samplings in both years on all fields. In contrast, corn earworm damage between the first and second samplings from the field on the Belflower Farm, and aflatoxin level and corn earworm damage from the field on the Lang Farm were dissociated in 2009.

关键词： aflatoxin level corn earworm damage maize weevil population SADIE analysis spatial pattern spatio-temporal association stink bug damage

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分布时滞细胞神经网络的代数抗饱和补偿设计

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系统工程与电子技术 2017年第6期39卷 1341-1346页

作者：何汉林徐文巍严路海军工程大学理学院湖北武汉430033

针对一类分布时滞神经网络系统提出一种代数抗饱和补偿设计。在不考虑系统输入饱和的前提下,通过系统参数、M矩阵理论、迪尼导数设计出了一种代数判据。在此基础上,当发生输入饱和时,运用舒尔补引理将二次型矩阵不等式(quadratic matrix... 详细信息

针对一类分布时滞神经网络系统提出一种代数抗饱和补偿设计。在不考虑系统输入饱和的前提下,通过系统参数、M矩阵理论、迪尼导数设计出了一种代数判据。在此基础上,当发生输入饱和时,运用舒尔补引理将二次型矩阵不等式(quadratic matrix inequality,QMI)转化成线性矩阵不等式(linear matrix inequality,LMI)。同时给出优化吸引域估计的方法。仿真结果验证了方案的可行性和有效性。

关键词：抗饱和分布时滞细胞神经网络吸引域

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Introduction and Application of ‘Mini Star White'——A New Variety of Gazania rigens L.

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Journal of Landscape Research 2013年第9期5卷 16-18页

作者： LIU Yang YANG Haiqin xu wenwei ZHOU Xiaohui LU Xiaoping Gold Mantis School of Architecture and Urban Environment Soochow University

*** *** a new quality ground cover plant can be applied in parks,yards,roadsides and tree pools,and contributes to the beauty of urban *** paper introduces biological characters and adaptability of‘Mini Star White’,a new variety of *** *** from Japan,and studied the color improvement of the variety on the basis of applying it in various landscape forms,which enriches ground cover diversity of Suzhou area,and provides new materials for the hybridization of *** L..

关键词： G.rigens L. Mini Star White Landscape application Cross breeding

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基于Ansys的磁保持电磁选针器瞬态仿真

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纺织学报 2018年第12期39卷 124-130页

作者：袁嫣红徐文炜彭来湖浙江理工大学浙江省现代纺织装备技术重点实验室浙江杭州310018

为优化磁保持选针器的选针性能和求解选针最佳驱动参数,利用Ansys作为数值分析工具,建立磁保持选针器仿真模型,通过对比在脉冲电压驱动下,选针器刀头摆动运动规律及转矩变化规律的仿真结果和实验结果,验证仿真模型的合理性;在此基础上,... 详细信息

为优化磁保持选针器的选针性能和求解选针最佳驱动参数,利用Ansys作为数值分析工具,建立磁保持选针器仿真模型,通过对比在脉冲电压驱动下,选针器刀头摆动运动规律及转矩变化规律的仿真结果和实验结果,验证仿真模型的合理性;在此基础上,就半硬磁铁芯关键参数对选针性能的影响进行了仿真研究,结果表明剩磁和矫顽力的增大会提高选针速度,但矫顽力的增大会降低选针启动速度。搭建了选针器性能测试实验平台,通过全面实验法分析了驱动电压与脉冲宽度对选针性能的影响因子,得出电压为24 V、脉宽为300μs时为驱动关键点。

关键词：电子选针装置磁保持电磁选针器半硬磁性材料 Ansys

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