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RPTDB:a comprehensive rice pest transcriptome database

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RPTDB:a comprehensive rice pest transcriptome database

第十三届全国植物基因组学大会

作者： Hao Wu,Liang Gao,yongjun lin~* National Key Laboratory of Corp Genetic Improvement,Natonal Center of Plant Gene Research(wuhan),Huazhong Agricultural University,Wuhan 430070,China

As a staple for over 1 billion people in China,rice yield is damaged by over 350 insect *** various kinds of strategies are used to control pests,the losses are still ***(RNA interference) is believed to have great potential in pest controlling,but the lack of genetic material vastly limits the application of this *** Rice Pest Transcriptome DataBase(RPTDB) is a

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基于风速估计的小型永磁直驱风力发电系统MPPT控制方法

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太阳能学报 2017年第3期38卷 631-639页

作者：刘卫亮刘长良林永君陈文颖马良玉华北电力大学新能源电力系统国家重点实验室保定071003

为了提高小型永磁直驱风力发电系统的发电效率并降低控制成本,基于转速信号与功率信号,采用支持向量机方法,对1台200 W永磁直驱风力发电机建立风速估计模型。分析模型参数对模型精度的影响,并采用萤火虫算法对模型参数进行优化。基于上... 详细信息

为了提高小型永磁直驱风力发电系统的发电效率并降低控制成本,基于转速信号与功率信号,采用支持向量机方法,对1台200 W永磁直驱风力发电机建立风速估计模型。分析模型参数对模型精度的影响,并采用萤火虫算法对模型参数进行优化。基于上述模型提出一种最大功率跟踪复合控制方法,并利用Matlab对该方法进行仿真验证,结果表明其具有有效性。最后利用送风机、小型永磁直驱风力机等构成试验平台,对所提控制方法的可行性进行验证。

关键词：风力发电机最大功率跟踪支持向量机萤火虫算法

A global evaluation of the associations between long-term dynamics of seed falls and rodents

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Integrative Zoology 2023年第5期18卷 831-842页

作者： Rui LIU yongjun ZHANG Hongmao ZHANG lin CAO Chuan YAN State Key Laboratory of Grassland Agro-ecosystems College of Ecology&School of Life SciencesLanzhou UniversityLanzhouChina Institute of Evolution and Ecology College of Life SciencesCentral China Normal UniversityWuhanChina College of Ecology and Environmental Science Yunnan UniversityKunmingChina Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Institute of Biodiversity Yunnan UniversityKunmingChina

One classic system of pulsed resource and animal population is mast seeding and population dynamics of seedeating rodents in ***,we still lack an understanding of the global patterns regarding the contributions of seed falls to rodent outbreaks or population *** analyzed a global dataset of coupled long-term time series of seed abundances and rodent populations from published literature,including 66 and 89 time series(156 rodent-seed pairs from 37 studies)for rodent and seed abundances,*** found only half of the examined rodent populations showed statistically significant coincidence between rodent outbreak and mastseeding *** all the coupled time series,seed abundance was found to positively correlate with rodent abundance with a one-year lag,and the relative importance of seed abundance was much lower than that of density dependence in affecting rodent population growth *** also found the relative importance of seed abundance decreased,but that of rodent density dependence increased with the latitude of *** the first time,our work provides a global pattern on the associations between seed falls and rodent population dynamics mostly in midand high-latitude forests,and highlights the necessity of more long-term studies on this subject in more forest ecosystems.

关键词： density dependence mast resource pulse rodent seed

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自适应在永磁同步电机伺服系统的应用

微计算机信息 2007年第3S期23卷 132-133页

作者：李垚林永君侯晓勇刘瑞华北电力大学(保定)

本文介绍了永磁同步电动机的数学模型和其相应的控制理论,在此基础上在交流伺服系统中引入了模型参考自适应控制方法,该方法不仅可以实现参数自修正,而且也可以提高系统的鲁棒性。同时仿真与实验结果表明该方法的有效性。

关键词：永磁同步电机自适应控制 MRAS

添加剂对番茄茎秆好氧堆肥发酵过程及氮素损失的影响

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中国农业大学学报 2024年第3期29卷 79-86页

作者：周顺李洋张冠智徐鹏林爱雨武永军杨振超西北农林科技大学园艺学院/农业农村部西北设施园艺工程重点实验室陕西杨凌712100 西北农林科技大学生命学院陕西杨凌712100

为研究减少在番茄茎秆好氧堆肥过程中氮素损失的途径,提高堆肥品质,以粉碎的番茄茎秆为原料,按物料干重分别加入5%的腐殖酸(T1)、氯化钙(T2)和过磷酸钙(T3),同时以不进行任何添加的堆体作为对照(CK),进行45 d的好氧堆肥试验。结果表明:... 详细信息

为研究减少在番茄茎秆好氧堆肥过程中氮素损失的途径,提高堆肥品质,以粉碎的番茄茎秆为原料,按物料干重分别加入5%的腐殖酸(T1)、氯化钙(T2)和过磷酸钙(T3),同时以不进行任何添加的堆体作为对照(CK),进行45 d的好氧堆肥试验。结果表明:3种添加剂均可降低堆肥过程中的氮素损失,同时减少了NH_3的挥发量;堆肥结束时,CK、T1、T2和T3处理的氮素损失率分别为18.04%、15.00%、12.65%和14.05%,累计NH_3挥发量为CK(1 648.11 mg/kg)>T1(1 330.35 mg/kg)>T3(995.35 mg/kg)>T2(528.11 mg/kg)。其中,添加氯化钙的处理保氮效果最好,与对照相比,氮素损失率低至12.65%,NH_3挥发量减少67.96%;各处理高温期均≥3 d,发芽指数≥80%,表明堆体已经腐熟,无植物毒性。综上,番茄茎秆好氧堆肥中添加氯化钙,对于减少堆肥过程中的氮素损失较为理想。本研究可为番茄茎秆好氧堆肥保氮工艺优化提供理论依据。

关键词：番茄茎秆好氧堆肥氮素损失氨挥发添加剂

Optimal Operation of Energy Hub Based Micro-energy Network with Integration of Renewables and Energy Storages

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Journal of Modern Power Systems and Clean Energy 2022年第1期10卷 100-108页

作者： Thanhtung Ha Ying Xue Kaidong lin yongjun Zhang Vu Van Thang Thanhha Nguyen Department of Electric Power Systems Thai Nguyen University of Technology(TNUT)Thai NguyenVietnam University of Birmingham BirminghamU.K School of Electric Power South China University of TechnologyGuangzhouChina Thai Nguyen University Thai NguyenVietnam

This study proposes an optimized model of a micro-energy network(MEN)that includes electricity and natural gas with integrated solar,wind,and energy storage systems(ESSs).The proposed model is based on energy hubs(EHs)and it aims to minimize operation costs and greenhouse *** research is motivated by the increasing use of renewable energies and ESSs for secure energy supply while reducing operation costs and environment effects.A general algebraic modeling system(GAMS)is used to solve the optimal operation problem in the *** results demonstrate that an optimal MEN formed by multiple EHs can provide appropriate and flexible responses to fluctuations in electricity prices and adjustments between time periods and *** also yields significant reductions in operation costs and *** proposed model can contribute to future research by providing a more efficient network model(as compared with the traditional electricity supply system)to scale down the environmental and economic impacts of electricity storage and supply systems on MEN operation.

关键词： Micro-energy network(MEN) natural gas price electricity price energy hub(EH) renewables energy storage optimal operation

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计及雾霾影响因素的光伏发电超短期功率预测

中国电机工程学报 2018年第14期38卷 4086-4095页

作者：刘卫亮刘长良林永君李静李金拓熊峰陈晨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 河北能源职业技术学院河北省唐山市063000

近年来频繁出现的雾霾天气,对光伏发电的输出功率造成了显著影响。首先,针对太阳辐射削弱情景,采用机器学习方法对大气气溶胶光学厚度进行估计,进而利用经云遮系数修正的晴空太阳辐射模型计算光伏电池面板接收的辐射强度;其次,针对光伏... 详细信息

近年来频繁出现的雾霾天气,对光伏发电的输出功率造成了显著影响。首先,针对太阳辐射削弱情景,采用机器学习方法对大气气溶胶光学厚度进行估计,进而利用经云遮系数修正的晴空太阳辐射模型计算光伏电池面板接收的辐射强度;其次,针对光伏电池面板积灰情景,开展功率测量实验,构造颗粒物累积浓度——功率衰减率样本集,从而通过相似日筛选估计不同积灰状态下的功率输出衰减率;最终,结合光电转换模型,基于地面颗粒物浓度预测以及精细天气预报信息,提出一种光伏发电超短期功率预测方法。实验结果表明,所提出的预测方法具有较高的精度,且易于工程实现。

关键词：光伏功率预测雾霾颗粒物浓度气溶胶光学厚度积灰

Functional characterisation of OSLY15,which regulates rice stem and panicle growth

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Functional characterisation of OSLY15,which regulates rice s...

第十三届全国植物基因组学大会

作者： Yu Liu,yongjun lin~* National Key Laboratory of Corp Genetic Improvement,Natonal Center of Plant Gene Research(wuhan),Huazhong Agricultural University,Wuhan 430070,P.r.china

Plants have developed sophisticated signaling pathways to regulate their normal growth.A gene termed OsLY15 was first selected from our laboratory microarray ***,OsLY15 were showed to be specially expressed in stem and panicle according to GUS assay using transgenic plants harboring OsLY15.:GUS,and the results were confirmed by qRT-PCR using specific primers of OsL ***,

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Cultivate brown planthopper (nilaparvata lugens) resistant rice using RNA interference technology

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Cultivate brown planthopper (nilaparvata lugens) resistant r...

第十一届全国植物基因组学大会

作者： Qiuhong Chen,yongjun lin~* National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research(Wuhan), Huazhong Agricultural University,Wuhan 430070,P.R.China

Rice is one of the most important food crops over the world,and the brown planthopper(BPH) is one of the most critical pests of rice,sometimes it can impact yield and quality of rice *** traditional methods to resist ...

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