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Reproduction does not impede the stopover departure to ensure a potent migration in Cnaphalocrocis medinalis moths

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Insect Science 2022年第6期29卷 1672-1684页

作者： jiawen guo Fan Yang Haiyan Zhang Peijiong Lin Baoping Zhai Zhongxian Lu Gao Hu Pengcheng Liu College of Plant Protection Nanjing Agricultural UniversityNanjingChina State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products Institute of Plant Protection and MicrobiologyZhejiang Academy of Agricultural SciencesHangzhouChina Institute of Vegetable Wuhan Academy of Agricultural ScienceWuhanChina Station of Plant Protection and Plant Inspection Agricultural Technology Extension Center of Jiangyan DistrictTaizhouChina Wenzhou Station of Plant Protection Soil and FertilizersWenzhouChina Key Laboratory of Integrated Management of Crop Disease and Pests Ministry of EducationNanjing Agricultural UniversityNanjingChina Laboratory of Bio-interactions and Crop Health Nanjing Agricultural UniversityNanjingChina

Despite the importance of reproduction in insects,its relation with multi-stop flight remains poorly understood in migratory *** clarify whether reproductive maturation commences during the multi-stop flight or after the completion of migration,we conducted physiological and behavioral assays in the rice leaf roller Cnaphalocrocis medinalis with laboratory-simulated conditions and field-captured *** found that the ovarian development was significantly promoted by tethered flight treatment for 1-2 nights when compared to the unflown group,while the flight muscle development was not *** was no significant difference in flight duration,flight distance and flight velocity between mated and virgin female moths,indicating that mated moths remained competent for the subsequent flights as did the *** an integrated field assay,we identified that over 60%of the female moths in the migrating populations cap-tured by high-altitude searchlights in the Immigration period of a season had completed the ovarian development and *** mature and mated moths collected in the rice field in the Emigration period were found capable of engaging in migratory take-off,as observed using an indoor monitoring ***,our findings point out that ***-inalis managed to complete reproductive maturation to a large extent during the multi-stop migratory flight without compromising the migration *** a cost-effective strategy ensures a successful migration for the *** findings advance our under-standing of the relationship between reproduction and migration,thus shedding light on the development of novel control measures for the outbreak of migratory insect pests.

关键词： mating multi-stop flight ovarian development pest control rice leaf roller

Growth and metal uptake of energy sugarcane (Saccharum spp.) in different metal mine tailings with soil amendments

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Journal of Environmental Sciences 2014年第5期26卷 1080-1089页

作者： Xin Zhang Yongguan Zhu Yuebin Zhang Yunxia Liu Shaochun Liu jiawen guo Rudan Li Songlin Wu Baodong Chen State key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sciences Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of Sciences Sugarcane Research Institute Yunnan Academy of Agricultural Sciences

A pot experiment was conducted to investigate the feasibility of growing energy sugarcane （Sac- charum spp.） in three different metal mine railings （Cu, Sn and Pb/Zn tailings） amended with uncontaminated soil at different mixing ratios. The results indicated that sugarcane was highly tolerant to tailing environments. Amendments of 20% soil to Sn tailings and 30% soil to Cu tailings could increase the biomass of cane-stem for use as the raw material for bioethanol production. Heavy metals were mostly retained in roots, which indicated that sugarcane was useful for the stabilization of the tailings. Bagasse and juice, as the most valuable parts to produce bioethanol, only accounted for 0.6%- 3% and 0.6%-7% of the total metal content. Our study supported the potential use of sugarcane for tailing phytostabilization and bioenergy production.

关键词： bioenergy crop sugarcane metal mine tailings phytoremediation

How silicon fertilizer improves nitrogen and phosphorus nutrient availability in paddy soil?

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2021年第7期22卷 521-532页

作者： Yuqi LIANG Min LIAO Zhiping FANG jiawen guo Xiaomei XIE Changxu XU College of Environmental and Resource Science Zhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Hangzhou 310058China National Demonstration Center for Experimental Environmental and Resources Education Zhejiang UniversityHangzhou 310058China Institute of Soil&Fertilizer and Resource&Environment Jiangxi Academy of Agricultural SciencesNanchang 330200China

In order to reveal the mechanism of silicon(Si)fertilizer in improving nitrogen(N)and phosphorus(P)nutrient availability in paddy soil,we designed a series of soil culture experiments by combining application of varying Si fertilizer concentrations with fixed N and P fertilizer *** the recommendations of fertilizer manufacturers and local farmers,we applied Si in concentrations of 0,5.2,10.4,15.6,and 20.8μg/*** each concentration of added Si,the availability of soil N and P nutrients,soil microbial activity,numbers of ammonia-oxidizing bacteria and P-decomposing bacteria which means that the organic P is decomposed into inorganic nutrients which can be absorbed and utilized by plants,and urease and phosphatase activity first increased,and then decreased,as Si was added to the *** indicators reached their highest levels with a Si application rate of 15.6μg/kg,showing values respectively 19.78%,105.09%,8.34%,73.12%,130.36%,28.12%,and 20.15%higher than those of the *** Si application(10.4 to 15.6µg/kg)could significantly increase the richness of the soil microbial community involved in cycling of N and P nutrients in the *** the Si application rate was 15.6μg/kg,parameters for characterizing microbial abundance such as sequence numbers,operational taxonomic unit(OTU)number,and correlation indices of microbial community richness such as Chao1 index,the adaptive coherence estimator(ACE)index,Shannon index,and Simpson index all reached maximum values,with amounts increased by 14.46%,10.01%,23.80%,30.54%,0.18%,and 2.64%,respectively,compared with the control *** is also a good correlation between N and P mineralization and addition of Si *** correlation coefficients between the ratio of available P/total P(AP/TP)and the number of ammonia-oxidizing bacteria,AP/TP and acid phosphatase activity(AcPA),AP/TP and the Shannon index,the ratio of available N/total amount of N(AN/TN)and the number of ammoniated

关键词： Silicon Paddy soil Nitrogen and phosphorus nutrient availability Microbial community structure nutrient

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含芯拧绞绳非线性弯曲动力学特性分析与研究

力学学报 2018年第2期50卷 373-384页

作者：过佳雯魏承谭春林赵阳中国空间技术研究院北京100190 哈尔滨工业大学航天学院哈尔滨150001

建立细长缆索大柔性多体动力学模型时,现实存在的复杂捻制几何构型多不予考虑,而是将柔索简化为材料均匀梁进行描述,致使运动仿真模型与物理实际存在一定差距.为此,研究一种典型非线性拧绞绳股的大变形等效动力学建模方法,考虑准静态与... 详细信息

建立细长缆索大柔性多体动力学模型时,现实存在的复杂捻制几何构型多不予考虑,而是将柔索简化为材料均匀梁进行描述,致使运动仿真模型与物理实际存在一定差距.为此,研究一种典型非线性拧绞绳股的大变形等效动力学建模方法,考虑准静态与大范围运动情况下绳股内的线接触,计算了受摩擦力及弯曲曲率影响的绳股可变弯曲刚度,通过等效梁模型避免了绳股精细建模时的大规模计算消耗.基于连续介质力学与绝对节点坐标方法,建立了拧绞绳惯性广义坐标下的多柔体动力学模型.为了验证等效模型的可行性,与基于有限段方法建立的精细模型进行对比仿真分析,通过位形验证了等效模型的精度.进一步地,根据力载作用下的准静态构型,研究了特定构型绳股弯曲刚度沿轴向的分布规律;通过自重力下一端固定柔性绳摆自由运动仿真并与传统均匀梁模型相比,研究了模型弯曲特性的差异.最后,根据能量守恒原理分析了摩擦耗散系统内各种能量间的相互转化.拧绞绳大变形等效动力学模型能够提高绳索动力系统运动预测的仿真计算效率,还能为钢丝绳参数与构型设计提供依据.

关键词：拧绞绳可变弯曲刚度大变形绝对节点坐标法接触摩擦

Experience and inspirations of the Mass Drug Administration Programme with artemisinin-piperaquine in Moheli Island of the Comoros assisted by China

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Global Health Journal 2018年第3期2卷 1-7页

作者： Qi Wang Yueming Yun Hongying Zhang jiawen guo Wanting Wu Changsheng Deng Bo Huang Zhiyong Xu Qin Xu Jianping Song Science and Technology Industrial Park Guangzhou University of Chinese MedicineGuangzhou 510445China Institute of Tropical Medicine Guangzhou University of Chinese MedicineExperimental buildingNo.12Airport RoadGuangzhou 510405China

Malaria is one of the major diseases threatening the lives of people in *** the past decade,China has provided anti-malaria assistance to *** November 2007,fast control malaria team of Guangzhou University of Chinese Medicine cooperated with the Comoros health *** Moheli Island of the Comoros,the anti-malaria team adopted a new strategy of Mass Drug Administration(MDA)and active *** established an e ective anti-malaria system and reporting system,as well as a local anti-malaria ***,they treated patients with malaria in Moheli Island and implemended health education in local *** a very short time,they have achieved remarkable *** paper summarized the experiences of the project in order to provide useful reference for China to better carry out anti-malaria action in Africa and expand foreign health assistance.

关键词： anti-malaria experiences inspirations

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空心型框架桥地震动力响应分析

铁道建筑 2017年第3期57卷 26-28页

作者：李家稳马鹏郭钢北方工业大学土木工程学院北京100144

为探讨空心结构框架桥的地震动力响应,以一下穿框架桥项目为工程背景,通过有限元软件分别建立空心型框架桥和原型框架桥三维模型,对比了空心结构框架桥和实际框架桥的自振频率、振型和时程曲线。分析结果表明:2种结构在整体刚度方面基... 详细信息

为探讨空心结构框架桥的地震动力响应,以一下穿框架桥项目为工程背景,通过有限元软件分别建立空心型框架桥和原型框架桥三维模型,对比了空心结构框架桥和实际框架桥的自振频率、振型和时程曲线。分析结果表明:2种结构在整体刚度方面基本保持一致,横向刚度较小,纵向刚度较大,保证了结构的稳定性。通过时程响应分析法对结构的特征点进行分析,对比了2种结构在最不利时刻的第1、第3主应力,发现二者时程曲线变化趋于一致,抗震性能几乎相同。

关键词：城市桥梁框架桥空心型框架桥抗震动力响应有限元模拟

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渠道走向及几何尺寸对灌溉水增温的影响

灌溉排水学报 2020年第11期39卷 137-144页

作者：郭佳雯蒲迅赤黄瑞仙四川大学水力学与山区河流开发保护国家重点实验室成都610065

【目的】寻找合适的渠道走向和几何尺寸,优化渠道水温度。【方法】根据渠道增温过程原理,建立了适用于渠道表面水体吸收太阳短波辐射的计算模型,并通过试验验证该模型,在此基础上,利用该模型模拟不同的渠道几何尺寸(宽深比分别为1∶1、... 详细信息

【目的】寻找合适的渠道走向和几何尺寸,优化渠道水温度。【方法】根据渠道增温过程原理,建立了适用于渠道表面水体吸收太阳短波辐射的计算模型,并通过试验验证该模型,在此基础上,利用该模型模拟不同的渠道几何尺寸(宽深比分别为1∶1、1.5∶1、2∶1)和渠道走向(东西走向、南北走向、与东西方向呈45°夹角)下灌溉水的增温效率。【结果】东西走向且宽深比最大的渠道增温效率最高,宽深比为2∶1的渠道的增温效率比1∶1的渠道高42.42%~256%;东西走向的渠道增温效率比南北走向的渠道高58.45%~296%,说明该模型具有一定的精度及准确度。【结论】增大灌溉渠道宽深比并使其走向趋向东西走向,可以有效利用灌溉水输运过程中的自然增温过程提高水温,降低低温灌溉水对农作物生长的影响。

关键词：渠道走向几何尺寸灌溉水太阳辐射水温

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黄河文化保护传承弘扬的路径研究

大连干部学刊 2023年第6期39卷 51-57页

作者：郭嘉雯郑州工业应用技术学院艺术设计学院河南郑州451150

黄河文化作为中华文明的重要组成部分,蕴含着丰富的时代价值,它是铸牢中华民族共同体意识的精神纽带,是坚定华夏儿女文化自信的重要基石,是促进黄河流域优质发展的强力抓手,也是深化文明交流互鉴的核心内容。但在面临全球性文化竞争和... 详细信息

黄河文化作为中华文明的重要组成部分,蕴含着丰富的时代价值,它是铸牢中华民族共同体意识的精神纽带,是坚定华夏儿女文化自信的重要基石,是促进黄河流域优质发展的强力抓手,也是深化文明交流互鉴的核心内容。但在面临全球性文化竞争和国内社会主要矛盾转换等时代机遇时,黄河文化的保护传承弘扬工作存在着遗产保护缺乏系统性、整体性和可持续性,精神特质及世界影响力尚未显现,创意开发和创新转化不足等诸多问题。要做好黄河文化的保护传承弘扬工作,需启动黄河流域世界遗产申报工作,加强对黄河文化精神内涵的挖掘,注重黄河文化资源的教育转化,构筑黄河文化标识及体系,搭建符号化与场景化传播矩阵,从而使黄河文化担起新时代的使命与责任,为实现中华民族伟大复兴的中国梦贡献黄河文化力量。

关键词：黄河文化时代价值标识体系基本路径

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泛审美时代下的博物馆审美教育研究

自然博物 2017年第1期 79-86页

作者：郭佳雯浙江大学文物与博物馆学系杭州310028

随着我国博物馆对公众免费开放,传统博物馆作为唯审美的精英文化的代表,与泛审美的大众文化之间形成了碰撞。审美教育是博物馆教育的内涵之一,博物馆的传统审美教育往往拉大了公众与博物馆文化间的距离。对此,文中引入了接受美学的观点... 详细信息

随着我国博物馆对公众免费开放,传统博物馆作为唯审美的精英文化的代表,与泛审美的大众文化之间形成了碰撞。审美教育是博物馆教育的内涵之一,博物馆的传统审美教育往往拉大了公众与博物馆文化间的距离。对此,文中引入了接受美学的观点,重新审视公众的审美诉求与博物馆审美教育的目的,并提出通过多维度、多层次、对话性、经验性和创造性的审美体验构建起泛审美与唯审美、审美教育与审美学习之间的桥梁,探索博物馆审美教育的实现。

关键词：泛审美大众文化接受美学博物馆审美教育