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Insect Science 2018年第6期25卷 991-1005页

作者： yi-yang yuan Mei Li Fan Fan Xing-Hui Qiu State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina College of Plant Protection Hebei Agricultural UniversityBaodingHebei ProvinceChina

Malpighian tubules (MTs)are moregulatory organs of ***, usually considered the key excretory and os- increasing evidence has suggested that MTs perform many more functions than just *** now,the molecular and physiological functions of MTs in the cotton bollworm (Helicoverpa armigera),a very important agricultural pest,are largely *** this study,the transcriptomes of H. armigera MTs from larvae,male adults and female adults were sequenced using RNA-Seq technology,and comparative analyses of transcriptomes between two life stages (larval and adult)and between adult sexes were *** generated a total of 84 643 high-quality unigenes,and identified a large number of abundant transcripts putatively encoding proteins involved in diuresis,detoxification,immunity,carbohydrate transport and metabolism,development and *** found that the expression pattern of unigenes was relatively similar between female and male adult MTs,but different between larval and adult *** data suggest that insect MTs may take multiple physiological fimctions as versatile *** extensive alterations in gene expression in MTs occurred from larvae to adults reflect an ecological adaptation to different feeding *** dimorphism in the cotton bollworm is somewhat indicated by the transcriptional difference of genes related to carbohydrate metabolism,detoxification,immunity and reproduction in the MTs of male and female adults.

关键词： ecological adaptation Helicoverpa armigera Malpighian tubules sexual dimorphism transcriptome

Azotobacter inoculation can enhance the resistance of Bt cotton to cotton bollworm, Helicoverpa armigera

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Insect Science 2023年第6期30卷 1648-1662页

作者： Zhuo Li Ming Zhao Lei Li yi-yang yuan Fa-Jun Chen Megha N.Parajulee Feng Ge Institute of Plant Protection Shandong Academy of Agricultural SciencesJinanChina State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina Shandong Cotton Research Center Shandong Academy of Agricultural SciencesJinanChina Department of Entomology Nanjing Agricultural UniversityNanjingChina Texas A&M University AgriLife Research and Extension Center LubbockTexasUSA

The rising trend in the cultivation of Bacillus thuringiensis (Bt) transgenic crops may cause a destabilization of agroecosystems, thus increasing concerns about the sustainability of Bt crops as a valid pest management method. Azotobacter can be used as a biological regulator to increase environmental suitability and improve the soil nitrogen utilization efficiency of crops, especially Bt cotton. A laboratory test investigated effects on the development and food utilization of Helicoverpa armigera fed with different Cry1Ab/Cry1Ac proteins and nitrogen metabolism-related compounds from cotton (transgenic variety SCRC 37 vs non-Bt cotton cv. Yu 2067) inoculated with Azospirillum brasilense (Ab) and Azotobacter chroococcum (Ac). The findings indicate that inoculation with Azotobacter significantly decreased the partial development and food utilization indexes (pupal weight;pupation rate;adult longevity;fecundity;relative growth rate, RGR;efficiency of conversion of digested food, ECD;and efficiency of conversion of ingested food, ECI) of H. armigera fed on Bt cotton, but contrasting trends were found among these indexes in H. armigera fed on non-Bt cotton inoculated with Azotobacter, as a result of differences in Bt toxin production. Overall, the results showed that inoculation with Azotobacter had negative effects on the development and food utilization of H. armigera fed on Bt cotton, leading to enhanced target insect resistance. Presumably, Azotobacter inoculation can be used to stimulate plant soil nitrogen uptake to increase nitrogen metabolism-related compounds and promote plant growth for Bt and non-Bt cotton, simultaneously raising Bt protein expression and enhancing resistance efficacy against cotton bollworm in Bt cotton.

关键词： Azotobacter Bt protein expression development and fecundity food utilization nitrogen metabolism-related compounds transgenic Bt cotton

Weathering Characteristics of Sloping Fields in the Three Gorges Reservoir Area, China

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Pedosphere 2006年第1期16卷 50-55页

作者： JIANG Hong-Tao XU Fei-Fei CAI yi yang Da-yuan Department of Urban and Resources Science Nanjing University Nanjing 210093 （China）. Department of Earth Science Nanjing University Nanjing 210093 （China）

For the purpose of understanding the weathering characteristics of surface layers in purple mudstone sloping fields of the Three Gorges Reservoir area of China, oxide content of major elements, composition of clay minerals, magnetic susceptibility, and difference in weathering characteristics of surface layers under different slope gradients were determined. The results showed that the oxide content of Si, Al, and Fe ranged from 60% to 75% and the weathering coefficient with depth showed no trend along the slope gradient. Also, for gentle (10° and 15°) and intermediate (25° and 40°) slopes the clay relative diffraction peak for kaolinite at the surface between 0-10 cm and 10-20 cm declined with an increase in slope gradient, while the relative diffraction peak for kaolinite in weathered layers on steep slopes (50° and 60°) disappeared altogether. Magnetic susceptibility decreased with increasing depth and, for a given depth layer, decreased with an increase in slope gradient. Analysis of the oxide content, weathering coefficients, clay minerals, and magnetic susceptibility showed that in the Three Gorges Reservoir area, the pedogenesis of the weathering layer in purple mudstone sloping fields was weak with weaker soil formation going from gentle slope to steep slope.

关键词： purple mudstone sloping field Three Gorges weathering

A Special TMCP Used to Develop a 800MPa Grade HSLA Steel

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Journal of University of Science and Technology Beijing 2001年第3期8卷 224-228页

作者： Chengjia Shang,Xuemin Wang, Xinlai He, Shanwu yang, yi yuan Material Science and Engineering School, University of Science and Technology Beijing, Beijing, 100083, China Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China

The effect of relaxation after finished rolling on structures and properties of four microalloyed steel with different content of Nb and Ti was investigated. By alloy designing and control rolling + relaxation-precipitation-control phase trail storm ati on (RPC) process, a new 800 MPa grade HSLA plate steel could be obtained, the microstructure is composite ultra-fine lath bainite/martensite. The tempering process and mechanical properties of this kind of HSLA steel were investigated. The yield strength can achieve 800 MPa, and the ductility and impact toughness is satisfied.

关键词： HSLA steel microstructure and mechanical properties TMCP (thermomechanical control process) RPC

Functional characterization of a novel, highly expressed ion-driven sugar antiporter in the thoracic muscles of Helicoverpa armigera

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Insect Science 2022年第1期29卷 78-90页

作者： yi-yang yuan Yu-Cui Xin Jian-Li Han Yu-Han Zhao Shi-Ming Han Zi-Yan Nangong Xin Chen Zhu-Cheng Wang Mei Li Xing-Hui Qiu State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina College of Life Sciences Cangzhou Normal UniversityCangzhouJiangsu ProvinceChina College of Plant Protection Hebei Agricultural UniversityBaodingHebei ProvinceChina

Sugar transporters(STs),which mainly mediate cellular sugar exchanges,play critical physiological roles in living organisms,and they may be responsible for sugar exchanges among various insect ***,the molecular and physiological functions of insect STs are largely ***,16 STs of Helicoverpa armigera were identified.A phylogenetic analysis classified the putative HaSTs into 12 sub-families,and those identified in this study were distributed into 6 ***-time polymerase chain reaction indicated that the 16 HaSTs had diverse tissue-specific expression *** transporter,HaST10,was highly expressed in thoracic muscles.A functional study using a Xenopus oocyte expression system revealed that HaST10 mediated both H+-driven trehalose and Na+-driven glucose antiport activities with high transport efficiency and low affinity levels.A HaST10 knockout clearly impaired the performance of ***,HaST10 may participate in sugar-supply regulation and have essential physiological roles in ***.

关键词： CRISPR/Cas9 glucose Helicoverpa armigera sugar transporter trehalose thoracic muscles

Sex differences in aging and injured brain

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Neural Regeneration Research 2025年第10期20卷 2901-2902页

作者： Jordan N.Williamson yuan yang University of Illinois Urbana-Champaign Grainger College of EngineeringDepartment of BioengineeringUrbanaILUSA Carle Foundation Hospital Stephenson Family Clinical Research InstituteClinical Imaging Research CenterUrbanaILUSA University of Illinois Urbana-Champaign Beckman Institute for Advanced Science and TechnologyUrbanaILUSA Northwestern University Department of Physical Therapy and Human Movement SciencesChicagoILUSA

Background:The prevalence,age of onset,and symptomatology of traumatic brain injury,stroke,and neurodegenerative diseases(such as Alzheimer’s disease(AD),Parkinson’s disease,amyotrophic lateral sclerosis,and Huntington’s disease)differ substantially between males and *** higher prevalence of these brain disorders has been attributed to females having a greater longevity compared with *** one of the greatest risk factors of acquired brain injury(such as stroke,traumatic brain injury caused by fall)and neurodegenerative disease is age.

关键词： Huntington prevalence traumatic

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端壁叶间装配缝尾段泄漏流气膜冷却特性

工程热物理学报 2017年第8期38卷 1641-1646页

作者：李毅飞张扬袁新清华大学热科学与动力工程教育部重点实验室北京100084

为了揭示端壁装配缝几何参数对叶片尾缘下游部分的气膜冷却特性影响机理,本文对GE-E^3直列叶栅中的装配缝气膜冷却特性进行了数值模拟研究。研究发现槽缝几何参数对叶片尾缘的冷却特性具有较大影响。装配缝两侧端壁中,靠近吸力面端壁低... 详细信息

为了揭示端壁装配缝几何参数对叶片尾缘下游部分的气膜冷却特性影响机理,本文对GE-E^3直列叶栅中的装配缝气膜冷却特性进行了数值模拟研究。研究发现槽缝几何参数对叶片尾缘的冷却特性具有较大影响。装配缝两侧端壁中,靠近吸力面端壁低于另一侧端壁对提高端壁气膜有效度具有有利作用。双侧切角结构虽然提高了靠近装配缝区域的气膜有效度,但增大了冷却盲区。装配缝结构应以靠近吸力侧偏低的几何关系和提高冷却出流速度为目标进行设计和优化。

关键词：装配缝台阶方向切角结构

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少数民族题材电影中原生态民歌的功能与运用

贵州民族研究 2017年第12期38卷 102-105页

作者：杨艺媛西安文理学院艺术学院陕西西安710065

原生态民族音乐是中国电影艺术塑造少数民族形象,传播少数民族文化的重要载体,也是少数民族独有的自然生态景观与现实生活场景的表达。少数民族题材电影中对原生态音乐的运用是二者的相融共生,对电影主题的表达、深化、拓展有着深刻的... 详细信息

原生态民族音乐是中国电影艺术塑造少数民族形象,传播少数民族文化的重要载体,也是少数民族独有的自然生态景观与现实生活场景的表达。少数民族题材电影中对原生态音乐的运用是二者的相融共生,对电影主题的表达、深化、拓展有着深刻的意义。

关键词：功能民族题材电影原生态民歌运用

Multi-Stage Voltage Control Optimization Strategy for Distribution Networks Considering Active-Reactive Co-Regulation of Electric Vehicles

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Energy Engineering 2025年第1期122卷 221-242页

作者： Shukang Lyu Fei Zeng Huachun Han HuiyuMiao yi Pan Xiaodong yuan Electric Power Research Institute State Grid Jiangsu Electric Power Co.Ltd.Nanjing211103China

The high proportion of uncertain distributed power sources and the access to large-scale random electric vehicle(EV)charging resources further aggravate the voltage fluctuation of the distribution network,and the existing research has not deeply explored the EV active-reactive synergistic regulating characteristics,and failed to realize themulti-timescale synergistic control with other regulatingmeans,For this reason,this paper proposes amultilevel linkage coordinated optimization strategy to reduce the voltage deviation of the distribution ***,a capacitor bank reactive power compensation voltage control model and a distributed photovoltaic(PV)activereactive power regulationmodel are ***,an external characteristicmodel of EVactive-reactive power regulation is developed considering the four-quadrant operational characteristics of the *** optimization model of the distribution network is then constructed considering the time-series coupling constraints of multiple types of voltage regulators.A multi-timescale control strategy is proposed by considering the impact of voltage regulators on active-reactive EV energy consumption and PV energy ***,a four-stage voltage control optimization strategy is proposed for various types of voltage regulators with multiple time ***-objective optimization is solved with the improvedDrosophila algorithmto realize the power fluctuation control of the distribution network and themulti-stage voltage control *** results validate that the proposed voltage control optimization strategy achieves the coordinated control of decentralized voltage control resources in the distribution *** effectively reduces the voltage deviation of the distribution network while ensuring the energy demand of EV users and enhancing the stability and economic efficiency of the distribution network.

关键词： Electric vehicle(EV) distribution network multi-stage optimization active-reactive power regulation voltage control

基于变下垂系数的直流配电网自适应虚拟惯性控制

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电力系统自动化 2017年第8期41卷 116-124页

作者：王毅黑阳付媛施凯伦新能源电力系统国家重点实验室(华北电力大学) 河北省保定市071003

直流配电网采用电压下垂控制具有较好的稳定性,但对高频随机功率波动的调节能力较差。文中研究了适用于直流配电网电压下垂控制的虚拟惯性控制方法,以兼顾调压器的快速性和稳定性,改善直流配电网电压质量。所述控制策略在功率波动瞬间... 详细信息

直流配电网采用电压下垂控制具有较好的稳定性,但对高频随机功率波动的调节能力较差。文中研究了适用于直流配电网电压下垂控制的虚拟惯性控制方法,以兼顾调压器的快速性和稳定性,改善直流配电网电压质量。所述控制策略在功率波动瞬间通过调压器下垂特性曲线的摆动,快速释放或吸收能量,相当于在直流侧虚拟出比实际电容大得多的虚拟电容,提高了系统惯性,有效抑制了直流电压波动。同时,理论分析了在不同运行情况下该控制策略所能提供的具体的虚拟惯性裕度,在此范围内根据电压大小自适应地调节下垂系数,提供大小可变的惯性支持,从而使系统获得最佳动态响应。最后,在MATLAB/Simulink中搭建了四端风储直流配电网系统并进行仿真验证,结果表明所述控制策略能够起到改善系统暂态响应、提高直流母线电压质量,以及平滑与交流主网交换功率的作用。

关键词：直流配电网虚拟惯性下垂控制蓄电池储能电能质量