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Insect Science 2021年第3期28卷 811-824页

作者： Jun-Nan Yang jia-ning Wei Le Kang State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijingChina

The pea leafminer,Liriomyza huidobrensis,is an important pest species affecting ornamental crops *** damage consists of oviposition and feeding punctures created by female adult flies as well as larva-bored mines in leaf mesophyll *** plants indirectly defend themselves from these two types of leafminer damage has not been sufficiently *** this study,we compared the indirect defense responses of bean plants infested by either female adults or *** of leaves by adults released green leaf volatiles and terpenoids,while larval feeding caused plants to additionally emit methyl salicylate and(E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene(TMTT).Puncturing of plants by female adults induced increases in jasmonic acid(JA)and JA-related gene expressions but reduced the expressions of salicylic acid(SA)-related *** contrast,JA and SA and their-related gene expression levels were increased significantly by larval *** exogenous application of JA+SA significantly triggered TMTT emission,thereby significantly inducing the orientation behavior of *** study has confirmed that larval feeding can trigger TMTT emission through the activation of both JA and SA pathways to attract parasitoids;however,TMTT alone is less attractive than the complete blend of volatiles released by infested plants.

关键词： jasmonic acid Liriomyza huidobrensis parasitoids salicylic acid TMTT

Dispersive behavior of high frequency Rayleigh waves propagating on an elastic half space

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Acta Mechanica Sinica 2021年第4期37卷 562-569,I0001页

作者： ning jia Zhilong Peng jianjun Li Yin Yao Shaohua Chen Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures Beijing Institute of TechnologyBeijing 100081China School of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China

When the wavelength of Rayleigh wave is comparable with nanometers,Rayleigh wave will become *** an interesting phenomenon cannot be predicted by the classical theory of *** order to reveal the internal mechanism and influencing factors of the dispersion,a model of Rayleigh wave propagating on an elastic half space is established and analyzed by a new theory of surface elastodynamics,in which the surface effect characterized by both the surface energy density and surface inertia is *** intrinsic nano-length scales,including the ratio of bulk surface energy density to bulk shear modulus and the ratio of surface mass density to bulk mass density,are *** is found that when the wavelength of Rayleigh wave is comparable with the two intrinsic nano-lengths,the surface effect becomes *** a result,dispersion of Rayleigh wave happens and even two Rayleigh waves with different wave speeds may ***,it is found that the effect of surface energy density would enhance the wave speed,while that of surface inertia would reduce *** the increase of wavelength,both effects gradually disappear and the Rayleigh wave speed degenerates to the classical *** results of this paper are not only helpful to understand the dispersive mechanism of elastic waves,but also helpful for the fine design and measurement of nanowave devices.

关键词： Rayleigh wave High frequency Dispersion Elastodynamics Surface effect

Phase Structure and Electrochemical Properties of Melt-Spun La_4MgNi_(17.5)Mn_(1.5) Hydrogen Storage Alloys

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Acta Metallurgica Sinica(English Letters) 2017年第11期30卷 1033-1039页

作者： Yu Zhang Fan-Song Wei jia-ning Xiao Xin Cai jiangsu University of Science and Technology Zhenjiang 212003 China

The （La4MgNi17.5Mn1.5） alloys at different melt-spun speeds were prepared by using a vacuum melt-spun furnace, and the phase structure and electrochemical properties of alloys were studied. X-ray diffraction analysis results show that melt-spun LaaMgNi17.5Mn1.5 alloys are composed of CeCus-type, PrsCo19-type and CeNi2-type phase. As the melt-spun speed increased, the phase abundance of CeCus-type increased, but that of PrsCo19-type decreased. Scanning electron microscopy-energy-dispersive spectroscopy analysis results show that melt-spun treatment can refine grain and make the alloys homogenization. Electrochemical tests show that all alloys have good activation performance within four cycles. With the increase in melt-spun speed, the cycle stability （S） of the alloys was improved obviously. After 100 cycles, the retention rate （S100） of the alloy increased from 54.82% （as-cast） to 82.29% （25 m/s）. Nevertheless, the maximum discharge capacity （Cmax） and high-rate dischargeability gradually decreased.

关键词： Hydrogen storage alloy Melt-spun Crystal structure Electrochemical property

The Causes and Consequences of China's Municipal Amalgamations:Evidence from Population Redistribution

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China & World Economy 2022年第4期30卷 174-200页

作者： ning jia Huiyong Zhong Antai College of Economics and Management Shanghai Jiaotong UniversityChina School of Finance Shanghai University of International Business and EconomicsChina

Along with China's urbanization,the spatial redistribution of the country's population has led to difficulties for local governance,especially in areas experiencing population *** amalgamation is an ffctive *** study uses administrative system code data that are accurate at the community and village level to verify the causal relationship between migration and village or community municipal *** shows that migration has been an important reason for municipal *** with greater population outflow have experienced more frequent amalgamation,manifesting a decrease in the numbers of villages and *** study,also examined the consequences of this amalgamation,finding that it can significantly alleviate local governments'fiscal pressures and promote public services in the long *** is of great importance for improving the grassroots governance of population outflow areas during rapid urbanization in China.

关键词： fiscal pressure municipal amalgamation population redistribution public services urbanization

Spectral Representation and Analysis of the KBR Precision Based on the Earth Gravity Spectrum

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Geo-Spatial Information Science 2005年第3期8卷 205-208,219页

作者： LUO jia ning Jinsheng LUO Zhicai School of Geodesy and Geomaties Wuhan University

Satellite-to-Satellite Tracking in low-low model （SST-Ⅱ） is a new technique to resolve the series of problems met in the determination of the earth＇s gravity field. As the key technique of SST-Ⅱ, KBR can get SST-Ⅱ measurements directly. So the KBR performance analysis is the first step in SST-Ⅱ design. In this paper, assuming that the satellite pairs of SST-Ⅱ are in near circle polar orbits, the spectrum relationship between the earth gravity field and KBR is established using analytic method. And then some examples are analyzed, the suggestions and conclusions are drawn from these examples. The research results could be taken as a reference for future satellite gravity project of China.

关键词： SST-Ⅱ KBR earth gravity field spectrum

New Minor Cyclopeptides from Arenaria oreophila (Caryophyllaceae)

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Chinese Chemical Letters 2006年第4期17卷 477-480页

作者： Ai Qun jia ning Hua TAN Jun ZHOU State Key Laboratory of Phytochemistry and Plant Resources in West China Kuning Institute of Botany Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences Kunming 650204

New minor cyclic peptides, named arenariphilin C 1 and arenariphilin D 2, were isolated from the whole plants of Arenaria oreophila （Caryophyllaceae）. Their structures were determined as cyclo（Pro^1-Pro2-Leu^1-Leu2-Phe-Ser-Gly-Thr） and cyclo （Ser-Cys） on the basis of spectroscopic data, especially by two-dimension NMR （2D NMR） technologies.

关键词： Arenaria oreophila Caryophyllaceae cyclopeptide arenariphilin C arenariphilin D.

Cyclopeptidic Constituents from Arenaria oreophila J.D,Hooker(Caryophyllaceae)

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Journal of Integrative Plant Biology 2006年第6期48卷 740-744页

作者： Ai-Qun jia ning-Hua Tan Jun Zhou State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany the Chinese Academy of Sciences Kunming 650204 Yunnan China

To further investigate the cyclopeptldes of the Caryophyllaceae family, two new cyclopeptldes, named Arenarlphilin E （compound 1） and Arenariphilin F （compound 2）, were obtained from Arenaria oreophUe J. D. Hooker using some Isolation methods, e. g. normal and reverse silica gel. By detailed spectroscopic analysis, such as FAB^＋-MS, 1 D NMR, 2D NMR, the structures of Arenariphilin E （compound 1） and Arenariphilln F （compound 2） were determined as cyclo（lle^1-Gly-Val^1-Ala-Leu-lle^3-lle^2-Val^2-Pro） and cyclo（Pro^2-Pro^1-Gly^2-lle-Val-Leu-Gly^1-AiaThr- Gly^3）, respectively.

关键词： Arenaria oreophila Arenariphilin E Arenariphilin F Caryophyllaceae Cyclopeptide.

Joint Probability Analysis and Prediction of Sea Ice Conditions in Liaodong Bay

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Journal of Ocean University of China 2024年第1期23卷 57-68页

作者： LIAO Zhenkun DONG Sheng TAO Shanshan HUA Yunfei jia ning College of Engineering Ocean University of ChinaQingdao 266100China Shuifa Planning and Design Co. Ltd.Jinan 250100China National Hazards Mitigation Service Beijing 100194China

Sea ice conditions in Liaodong Bay of China are often described by sea ice grades,which classify annual sea ice conditions based on the annual maximum sea ice thickness(AM-SIT)and annual maximum floating ice extent(AM-FIE).The joint probability distribution of AM-SIT and AM-FIE was established on the basis of their data pairs from 1949/1950 to 2019/2020 in Liaodong *** joint intensity index of the sea ice condition in the current year is calculated,and the joint classification criteria of the sea ice grades in past years are established on the basis of the joint intensity index series.A comparison of the joint criteria with the 1973 and 2022 criteria revealed that the joint criteria of the sea ice grade match well,and the joint intensity index can be used to quantify the sea ice condition over the years.A time series analysis of the sea ice grades and the joint intensity index sequences based on the joint criteria are then *** show a decreasing trend of the sea ice condition from 1949/1950 to 2019/2020,a mutation in 1990/1991,and a period of approximately 91 years of the sea ice *** addition,the Gray-Markov model(GMM)is applied to predict the joint sea ice grade and the joint intensity index of the sea ice condition series in future years,and the error between the results and the actual sea ice condition in 2020/2021 is small.

关键词： sea ice grade ice thickness floating ice extent Liaodong Bay copula

Surface and chemical diffusion effects of nanowire electrodes in lithium-ion batteries

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Science China(Technological Sciences) 2020年第11期63卷 2413-2422页

作者： jia ning PENG ZhiLong WANG Shuai LI jianJun YAO Yin CHEN ShaoHua Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China College of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China

Nanostructured electrodes with surface effect show a distinct advantage in prolonging the lifetime of lithium-ion(Li-ion)*** order to characterize the surface and chemical diffusion effects in a cylindrical nanowire electrode,a new theoretical model is proposed based on a combination of the diffusion theory and a surface energy density-based elastic *** the reformulation of the stress boundary condition in terms of a surface-induced traction,the bulk surface energy density and surface relaxation parameter are introduced as two simple parameters characterizing the surface effect in nanowire electrodes,instead of the surface elastic constants always used in existing ***-form solutions of the diffusion-induced elastic fields under potentiostatic operation are *** is found that the radial expansion and tensile stress in nanowire electrodes become smaller than the classical predictions without surface effect and decrease monotonically with a decreasing nanowire radius when the surface effect is *** phenomena can be basically attributed to the action of surface-induced traction on the nanowire *** results demonstrate the convenience and effectiveness of the present model in predicting the chemo-mechanical behavior of nanowire electrodes,which should be of guidance value for the optimal design of durable electrodes.

关键词： lithium-ion battery nanowire electrode diffusion-induced stresses surface effect surface energy density

Changes in structure and functional properties of whey proteins induced by high hydrostatic pressure:A review

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Frontiers of Chemical Science and Engineering 2009年第4期3卷 436-442页

作者： Xiaoming LIU jia ning Stephanie CLARK State Key Laboratory of Food Science and Technology and School of Food Science and Technology Jiangnan UniversityWuxi 214122China Department of Food Science and Human Nutrition Iowa State UniversityAmesIA 50011-1061USA

High hydrostatic pressure(HHP)is an alternative technology to heat processing for food product *** does not cause environmental pollution and eliminates the use of chemical additives in food *** review covers the research conducted to understand the effect of HHP on structure and functional properties of whey *** this paper,the mechanism underlying pressure-induced changes inβ-lactoglobulin andα-lactabumin is also discussed and how they related to functional properties such as hydrophobicity,foam stability,and flavor-binding capacity.

关键词： high hydrostatic pressure whey protein functional properties structure