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2篇 您的检索式:作者名="DAI ShouHui"
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1New insights into the life history of Monochamus saltuarius(Cerambycidae:Coleoptera)can enhance surveillance strategies for pine wilt disease显示文摘Pine wilt disease was first discovered in Dongtang town,Liaoning Province,China,in 2017.Monochamus saltuarius Gebler is a new vector of pinewood nematode and the only known vector in Liaoning Province.The biology of this pest has not been reported thus far;therefore,it is necessary to study its life history.During 2018 and 2019,we collected 138 and 491 adult M.saltuarius beetles,respectively,to analyze their eclosion from larva to adult stage.In mid-March,overwintering larvae began to feed(on xylem)and seek nutrition in preparation for pupation and eclosion.The adults began to appear in mid-April,and the population reached its peak in late May.The life span of the adults was 28-76 days.After approximately 1 week of supplemental nutrition(feeding on twigs),adults began to mate and lay eggs.The egg stage of M.saltuarius lasted 4-8 days.The larvae in Dongtang town have 4 instars and overwinter in tunnels as 3rd-4th instars.The 1st-instar stage lasted 3-9 days,the 2nd-instar stage lasted 11-23 days,the 3rd-instar stage lasted 30-130 days,and the 4th-instar stage lasted 44-180 days.The pupal stage lasted 7-12 days,and the life span of the adults was 28-76 days.In this study we systematically monitored the life history of M.saltuarius for the first time.Our objective was to lay a foundation for improving control of this pinewood nematode vector.Min Li Yun Dai Yang Wang Lichao Wang Shouhui Sun Fengmao Chen 2021Journal of Forestry Research2021,32,6:2
2Measurement of aerosol effective density by single particle mass spectrometry显示文摘Single particle mass spectrometry has been widely used to determine the size and chemical compositions of atmospheric aerosols; however, it is still rarely used for the microphysical properties measurement. In this study, two methods were developed for determining aerosol effective density by a single particle aerosol mass spectrometer(SPAMS). Method I retrieved effective density through comparison between measured light scattering intensities and Mie theoretical modelled partial scattering cross section. Method II coupled a differential mobility analyzer(DMA) with SPAMS to simultaneously determine the electric mobility and vacuum aerodynamic diameter, and thus the effective density. Polystyrene latex spheres, ammonium sulfate and sodium nitrate were tested by these methods to help validate their effectiveness for determining the aerosol effective density. This study effectively extends SPAMS measurements to include particle size, chemical composition, light scattering, and effective density, and thus helps us better understand the environment and climate effects of aerosols.ZHANG GuoHua BI XinHui HAN BingXue QIU Ning DAI ShouHui WANG XinMing SHENG GuoYing FU JiaMo 2016Science China Earth Sciences2016,59,2:1
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