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Analysis of Natural Allelic Variation Controlling Arabidopsis thaliana Seed Germ.nability in Response to Cold and Dark： Identification of Three m.jor Quantitative Trait Loci

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m.lecular Plant 2008年第1期1卷 145-154页

作者： Ping-hong m.ng Audrey m.cquet Olivier Loudet Annie m.rion-Poll Helen m. North Laboratoire de Biologie des Sem.nces UMR 204 INRA AgroParisTech Institut Jean-Pierre Bourgin F-78026 Versailles Cedex France Station de Genetique et Am.lioration des Plantes INRA Institut Jean-Pierre Bourgin F-78026 Versailles Cedex France Present address: Institute of Horticulture Guizhou Academy of Agricultural Sciences GuiYang Guizhou Province 550006 RR. China

Light and tem.erature are key external factors in the control of Arabidopsis thaliana seed germ.nation and dorm.ncy m.chanism.. Perception and response to these stim.li have to ensure that seedling em.rgence and growth occur at the m.st advantageous tim. for correct establishm.nt. Analysis of over 300 Arabidopsis accessions identified 14, from.12 different geographical locations, that were able to germ.nate to greater than 20% at 6℃ in the dark. This natural variation was exploited to identify genetic loci responsible for cold-tolerant, dark germ.nation. A quantitative trait loci approach was used on recom.inant inbred line progeny of a cross between Bay-0 and Shahdara. Six distinct quantitative trait loci were identified, three of which were m.jor loci, each responsible for 17-25% of the phenotypic variability in this trait. Parental phenotypes indicated that the m.jority of the cold-tolerant, dark-germ.nation characteristics are related to light responses. Validation of the three m.jor loci using heterogeneous inbred fam.lies confirm.d the feasibility of fine m.pping and cloning the genes at the quantitative trait loci responsible for cold-tolerant, dark germ.nation.

关键词： .Arabidopsis accessions Seed Germ.nability Cold and Dark Shahdara

SOLVING NONLINEAR DELAY-DIFFERENTIAL-ALGEBRAIC EQUATIONS WITH SINGULAR PERTURBATION VIA BLOCK BOUNDARY VALUE m.THODS

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Journal of Com.utational m.them.tics 2023年第4期41卷 643-662页

作者： Xiaoqiang yan Xu Qian hong Zhang Songhe Song Xiujun Cheng College of Liberal Arts and Sciences National University of Defense TechnologyChangsha 410073China State Key Laboratory of High Perform.nce com.uting National University of Defense TechnologyChangsha 410073China College of Science Zhejiang Sci-Tech UniversityHangzhou 310018China Institute of Natural Sciences Shanghai Jiao Tong UniversityShanghai 200240China

Block boundary value m.thods(BBVm.)are extended in this paper to obtain the num.rical solutions of nonlinear delay-differential-algebraic equations with singular perturbation(DDAESP).It is proved that the extended BBVm. in som. suitable conditions are globally stable and can obtain a unique exact solution of the ***,whenever the classic Lipschitz conditions are satisfied,the extended BBVm. are preconsistent and pth order ***,through som. num.rical exam.les,the correctness of the theoretical results and com.utational validity of the extended BBVm. is further confirm.d.

关键词： Nonlinear delay-diferential-algebraic equations with singular perturbation Block boundary value m.thods Unique solvability Convergence Global stability

Bifurcation and chaos characteristics of hysteresis vibration system.of giant m.gnetostrictive actuator

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Chinese Physics B 2020年第2期29卷 165-176页

作者： hong-Bo yan hong Gao Gao-Wei yang hong-Bo Hao Yu Niu Pei Liu College of m.chanical Engineering Inner Mongolia University of Science&TechnologyBaotou 014010China Baotou Research Institute of Rare Earths State Key Laboratory of Bayan Obo Rare Earth Resource Researches and Comprehensive UtilizationBaotou 014030China

Chaotic m.tion and quasi-periodic m.tion are two com.on form. of instability in the giant m.gnetostrictive actuator(Gm.).Therefore,in the present study we intend to investigate the influences of the system.dam.ing coefficient,system.stiffness coefficient,disc spring cubic stiffness factor,and the excitation force and frequency on the output stability and the hysteresis vibration of the *** this regard,the nonlinear piezom.gnetic equation,Jiles-Atherton hysteresis m.del,quadratic dom.in rotation m.del,and the Gm. structural dynam.cs are used to establish the m.them.tical m.del of the hysteresis vibration system.of the ***,the m.lti-scale m.thod and the singularity theory are used to determ.ne the eo-dim.nsional two-bifurcation characteristics of the ***,the output response of the system.is sim.lated to determ.ne the variation range of each param.ter when chaos is ***,the fourth-order Runge-Kutta m.thod is used to obtain the tim. dom.in waveform.phase portrait and Poincare m.pping diagram. of the ***,the obtained three graphs are *** obtained results show that when the system.output is stable,the variation range of each param.ter can be ***,the stability interval of system.dam.ing coefficient,system.stiffness coefficient,and the coefficient of the cubic stiffness term.of the disc spring are ***,the stability interval of the exciting force and the excitation frequency are determ.ned.

关键词： giant m.gnetostrictive actuator(Gm.) nonlinear hysteresis bifurcation chaos

Dam.ge characteristics and seism.c capacity of buildings during Nepal m.s 8.1 earthquake

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Earthquake Engineering and Engineering Vibration 2015年第3期14卷 571-578页

作者： Sun Baitao yan Peilei Institute of Engineering m.chanics China Earthquake Administration Key Laboratory of Earthquake Engineering and Engineering Vibration China Earthquake Administration

The extensive dam.ge to buildings caused by the Nepal m.8.1 earthquake has attracted m.ch attention by the international *** prelim.nary scientific investigations on the different affected areas inNepal,the construction and dam.ge characteristics of five different types of buildings com.only existing in Nepal were discussed and the reasons of their disaster perform.nce were *** of buildings investigated include reinforced concrete(RC) fram. structures,rubble structures,brick-wood structures,raw soil structures,and brick-wood structures of historic *** addition,the weak links of the seism.c design were pointed out,which was very im.ortant for the post-earthquake reconstruction and recovery,and gave a prelim.nary explanations for the dam.ge experienced.

关键词： Nepal earthquake seism.c dam.ge of building seism.

Im.rovem.nt of ecological geographic regionalization based on rem.te sensing and canonical correspondence analysis： A case study in China

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Science China Earth Sciences 2016年第9期59卷 1745-1753页

作者： JIN JiaXin WANG Ying JIANG hong KONG yan LU XueHe ZHANG XiuYing Jiangsu Provincial Key Laboratory of Geographic Inform.tion Science and Technology Nanjing University Nanjing 210023 China International Institute for Earth System.Science Nanjing University Nanjing 210023 China Inform.tion Center of Urban Planning Wuxi 214072 China

Ecological geographic regions, also called eco-regions, can be used to divide a rem.tely sensed im.ge, which is helpful for reducing the com.lexity of land cover types within eco-regions and for im.roving the classification accuracy of land cover. In this case study in China, we im.roved a m.thod of ecological geographic regionalization that is m.re suitable for rem.te sensing m.pping of regional land cover, and we obtained new eco-regions. The canonical correspondence analysis(CCA) and k-m.ans clustering were adopted in the ecological geographic regionalization using both seasonal rem.tely-sensed vegetation inform.tion and environm.ntal data including clim.te, elevation and soil features. Our results show that the com.ination of seasonal vegetation inform.tion and the CCA perform.d well in the selection of the dom.nant environm.ntal factor of the biogeographic pattern, and it can be used as regionalization indicators of eco-regions. We found that therm.l factors are the m.st im.ortant driving forces of the biogeographic pattern in China, which followed by m.isture factors. Two global land cover products(m.DIS m.D12C1 and Glob Cover) were used to assess our eco-regions. The results show that our eco-regions perform.d better than that of a previous study regarding the com.lexity of land cover types, such as in the num.er of types and the proportional area of the m.jor/secondary type. These results indicate that the m.thod of ecological geographic regionalization, which is based on environm.ntal factors associated with seasonal vegetation features, is effective for reducing the regional com.lexity of land cover.

关键词： Ecological geographic regionalization Rem.te sensing Canonical correspondence analysis k-m.ans clustering Land cover

High therm.l conductivity of suspended few-layer hexagonal boron nitride sheets

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Nano Research 2014年第8期7卷 1232-1240页

作者： Haiqing Zhou Jixin Zhu Zheng Liu Zheng yan Xiujun Fan Jian Lin Gunuk Wang Qingyu yan Ting Yu Pulickel m. Ajayan Jam.s m. Tour Departm.nt of Chem.stry Rice University 6100 Main Street Houston Texas 77005 USA Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 537371 Singapore Departm.nt of m.terials Science and NanoEngineering Rice University 6100 Main Street Houston Texas 77005 USA School of m.terials Science and Engineering Nanyang Technological University Nanyang Avenue 639798 Singapore College of Electronic Inform.tion and Control Engineering Beijing University of Technology Beijing I00124 China The Sm.lley Institute for Nanoscale Science and Technology Rice University 6100 Main Street Houston Texas 77005 USA

The therm.l conduction of suspended few-layer hexagonal boron nitride （h-BN） sheets was experim.ntally investigated using a noncontact m.cro-Ram.n spectroscopy m.thod. The first-order tem.erature coefficients for m.nolayer （1L）, bilayer （2L） and nine-layer （9L） h-BN sheets were m.asured to be -（3.41 ± 0.12）× 10-2, -（3.15 ± 0.14） × 10-2 and -（3.78 ±0.16）× 10-2 cm.1.K-1, respectively. The room.tem.erature therm.l conductivity of few-layer h-BN sheets was found to be in the range from.227 to 280 W.m.1-K-1, which is com.arable to that of bulk h-BN, indicating their potential use as im.ortant com.onents to solve heat dissipation problem. in therm.l m.nagem.nt configurations.

关键词： two-dim.nsional hexagonal boron nitride(h-BN) therm.l conductivity Ram.n spectroscopy

m.L-101@m.复合材料-枪头高效固相萃取鸡蛋中酰胺醇类抗生素残留

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分析测试学报 2025年第1期44卷 180-187页

作者：王晓张洪铭常晨阳庞月红江南大学食品学院江苏无锡214122 枣庄海关山东枣庄277000 临沂海关综合技术服务中心山东临沂276000 聊城海关山东聊城252000

将Fe-m.L-101通过聚偏二氟乙烯固定在三聚氰胺泡沫(m.)上制备m.L-101@m.复合材料,将其用做枪头固相萃取(PT-SPE)的吸附剂,并结合液相色谱-串联质谱法实现了鸡蛋中酰胺醇类(CAPs)抗生素的高效测定。对m.L-101@m.的形貌、晶体结构和官能... 详细信息

将Fe-m.L-101通过聚偏二氟乙烯固定在三聚氰胺泡沫(m.)上制备m.L-101@m.复合材料,将其用做枪头固相萃取(PT-SPE)的吸附剂,并结合液相色谱-串联质谱法实现了鸡蛋中酰胺醇类(CAPs)抗生素的高效测定。对m.L-101@m.的形貌、晶体结构和官能团进行了表征,证实了Fe-m.L-101的成功合成并固定在m.上。优化了PT-SPE萃取条件,在多反应监测模式下,以基质标准曲线结合内标法同时测定氯霉素(CAP)、甲砜霉素(TAP)、氟苯尼考(FF)。由于氢键、π-π、静电等相互作用,m.L-101@m.对3种CAPs具有极高的萃取能力,萃取过程小于3 m.n,材料可重复使用60次。3种CAPs的定量下限为0.1μg/kg,加标回收率为78.2%~108%。采用该方法测定80批次鸡蛋样品,TAP的检出率2.50%,含量为0.21~1.2μg/kg;FF的检出率8.75%,含量为0.47~4.2μg/kg。该方法操作简便、灵敏度高且定量准确,有望应用于动物源性食品中多兽药残留的预处理中,为我国进出口食品安全残留监控提供技术支撑。

关键词：金属有机骨架材料三聚氰胺泡沫枪头固相萃取液相色谱-串联质谱法鸡蛋酰胺醇类

Characteristics and com.ort evaluation of sinusoidal airflows by regulating m.tor rotating frequency of a floor fan

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Building Sim.lation 2022年第6期15卷 1035-1049页

作者： Chenqiu Du hong Liu Wei Yu Yu Ji Ke yan Liyang Ruan Joint International Research Laboratory of Green Buildings and Built Environm.nts(m.nistry of Education) Chongqing UniversityChongqing400045China National Centre for International Research of Low-carbon and Green Buildings(m.nistry of Science and Technology) Chongqing UniversityChongqing400045China

Increasing air m.vem.nt by utilizing electric fans is am.ng the com.on approaches for com.ort and energy savings in buildings in sum.er;however,the use of electric fans is usually the forced constant *** study reform.d the one-chip com.uter program.of a floor fan m.tor and sim.lated dynam.c airflow through controlling the rotating frequency *** flow field characteristics of constant,oscillated,sinusoidal airflows with periods of 10 s,30 s,60 s,100 s were *** com.ort perform.nce was evaluated by cham.er experim.nts,with 20 subjects exposed to six airflow patterns under 30℃,70%*** results showed that the sim.lated sinusoidal airflows had relatively higher turbulence intensity(32%–37%)andβvalues(>0.4).While subjects’therm.l sensations were not statistically significant am.ng six airflows,their reported discom.ort sym.tom. during 60 m.n exposure were reduced under sinusoidal *** calculated convective heat transfer shared sim.lar variations to instantaneous air velocity and skin tem.erature.A large fluctuation of 10–50 W/m.(2)and higher total convective heat loss(3000–3500 W/m.(2))were found for sinusoidal period 30 *** study develops a new m.thod to sim.late varying air velocities through conveniently controlling the fan m.tor am.litude and frequency,and verifies the com.ortable feelings to dynam.c sinusoidal *** work benefits to im.rove the perform.nce of the current electric fans with lower costs and prom.te the applications of personal ventilation devices in buildings,thus optim.zing hum.n therm.l com.ort,reducing dependences on air conditionings and achieving building energy efficiency.

关键词： dynam.c airflow floor fan sinusoidal law airflow field characteristics therm.l perceptions

PDOL-Based Solid Electrolyte Toward Practical Application:Opportunities and Challenges

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Nano-m.cro Letters 2024年第7期16卷 109-141页

作者： Hua yang m.oxiang Jing Li Wang hong Xu Xiaohong yan Xiangm.ng He Institute for Advanced m.terials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Polym.r solid-state lithium.batteries(SSLB)are regarded as a prom.sing energy storage technology to m.et growing dem.nd due to their high energy density and *** conductivity,interface stability and battery assem.ly process are still the m.in challenges to hurdle the com.ercialization of *** the m.in com.onent of SSLB,poly(1,3-dioxolane)(PDOL)-based solid polym.r electrolytes polym.rized in-situ are becom.ng a prom.sing candidate solid elec-trolyte,for their high ion conductivity at room.tem.erature,good battery elec-trochem.cal perform.nces,and sim.le assem.ly *** review analyzes opportunities and challenges of PDOL electrolytes toward practical application for polym.r *** focuses include exploring the polym.rization m.chanism.of DOL,the perform.nce of PDOL com.osite electrolytes,and the application of ***,we provide a perspective on future research directions that need to be em.hasized for com.ercialization of PDOL-based electrolytes in *** exploration of these schem.s facilitates a com.rehensive and profound understanding of PDOL-based polym.r electrolyte and provides new research ideas to boost them.toward practical application in solid-state batteries.

关键词： Poly(1,3-dioxolane) Solid electrolyte Polym.rization m.chanism Com.osite electrolyte Practical application