一、语境概述什么是语境?又何谓语言语境? 语言学家对语境的解释大体有两种:一种把语境解释为从具体的情景中抽象出来的对语言活动参与者产生影响的一些因素,这些因素系统地决定了话语的形式,话语的合适性以及话语的意义。这是John Lyon...一、语境概述什么是语境?又何谓语言语境? 语言学家对语境的解释大体有两种:一种把语境解释为从具体的情景中抽象出来的对语言活动参与者产生影响的一些因素,这些因素系统地决定了话语的形式,话语的合适性以及话语的意义。这是John Lyons对语境所作的界定。他在其《语义学》一书中写道: ...Context,it must be emphasized,is a theoretical construct,in the postulation 0f which展开更多
参考文献1)Rollet,E.De la mensuration des os longs des membres.Lyons.2)Manouvrier,L.Determination de la taille d’ appres les os longs.Rev.E.d’anthrop.paris.11.277.1892.3)Pearson,K.Ⅳ.Mthematical contributions to the ...参考文献1)Rollet,E.De la mensuration des os longs des membres.Lyons.2)Manouvrier,L.Determination de la taille d’ appres les os longs.Rev.E.d’anthrop.paris.11.277.1892.3)Pearson,K.Ⅳ.Mthematical contributions to the theory of evolution.展开更多
Photochemical aging of volatile organic compounds(VOCs)in the atmosphere is an important source of secondary organic aerosol(SOA).To evaluate the formation potential of SOA at an urban site in Lyon(France),an outdoor ...Photochemical aging of volatile organic compounds(VOCs)in the atmosphere is an important source of secondary organic aerosol(SOA).To evaluate the formation potential of SOA at an urban site in Lyon(France),an outdoor experiment using a Potential Aerosol Mass(PAM)oxidation flow reactor(OFR)was conducted throughout entire days during JanuaryFebruary 2017.Diurnal variation of SOA formations and their correlation with OH radical exposure(OHexp),ambient pollutants(VOCs and particulate matters,PM),Relative Humidity(RH),and temperature were explored in this study.Ambient urban air was exposed to high concentration of OH radicals with OHexp in range of(0.2-1.2)×10^12 molecule/(cm^3·sec),corresponding to several days to weeks of equivalent atmospheric photochemical aging.The results informed that urban air at Lyon has high potency to contribute to SOA,and these SOA productions were favored from OH radical photochemical oxidation rather than via ozonolysis.Maximum SOA formation(36μg/m^3)was obtained at OHexp of about 7.4×10^11 molecule/(cm^3·sec),equivalent to approximately 5 days of atmospheric oxidation.The correlation between SOA formation and ambient environment conditions(RH&temperature,VOCs and PM)was observed.It was the first time to estimate SOA formation potential from ambient air over a long period in urban environment of Lyon.展开更多
Lyon IARC多瘤病毒(LIPyV)是2017年于人类皮肤样本中新发现的病毒,为更加了解其致病性和流行病学状况,本试验拟建立一种灵敏度高、可快速检测LIPyV的SYBR Green I实时荧光定量PCR方法,并对该方法的特异性、灵敏性和重复性进行评价。结...Lyon IARC多瘤病毒(LIPyV)是2017年于人类皮肤样本中新发现的病毒,为更加了解其致病性和流行病学状况,本试验拟建立一种灵敏度高、可快速检测LIPyV的SYBR Green I实时荧光定量PCR方法,并对该方法的特异性、灵敏性和重复性进行评价。结果显示:该检测方法的Ct值与标准品模板线性关系良好,相关系数为0.9989;利用该方法检测CBoV、FBoV、AGV2这几种病毒的基因组均没有出现非特异性扩增;敏感性比普通PCR检测方法高100倍;组内和组间重复性试验的变异系数小于1%;通过60份样本检测发现LIPyV阳性率为6.67%,比普通PCR更灵敏可靠。结果表明,本试验建立的SYBR Green I实时荧光定量PCR方法可用于LIPyV的快速检测。展开更多
文摘一、语境概述什么是语境?又何谓语言语境? 语言学家对语境的解释大体有两种:一种把语境解释为从具体的情景中抽象出来的对语言活动参与者产生影响的一些因素,这些因素系统地决定了话语的形式,话语的合适性以及话语的意义。这是John Lyons对语境所作的界定。他在其《语义学》一书中写道: ...Context,it must be emphasized,is a theoretical construct,in the postulation 0f which
文摘参考文献1)Rollet,E.De la mensuration des os longs des membres.Lyons.2)Manouvrier,L.Determination de la taille d’ appres les os longs.Rev.E.d’anthrop.paris.11.277.1892.3)Pearson,K.Ⅳ.Mthematical contributions to the theory of evolution.
基金the Institute for Research on Catalysis and the Environment of Lyon(IRCELYON)supported by the"Investissement d’Avenir"PEPS Program Project(ASTRAL)of the University of Lyon and French National center for Scientific Research(French:center national de la recherche scientifique,CNRS)as part of the ANR-11-IDEX-0007 programby the European Research Council under the Horizon 2020 Research and Innovation Program Project of the European Union under Convention N°690958(MARSU)。
文摘Photochemical aging of volatile organic compounds(VOCs)in the atmosphere is an important source of secondary organic aerosol(SOA).To evaluate the formation potential of SOA at an urban site in Lyon(France),an outdoor experiment using a Potential Aerosol Mass(PAM)oxidation flow reactor(OFR)was conducted throughout entire days during JanuaryFebruary 2017.Diurnal variation of SOA formations and their correlation with OH radical exposure(OHexp),ambient pollutants(VOCs and particulate matters,PM),Relative Humidity(RH),and temperature were explored in this study.Ambient urban air was exposed to high concentration of OH radicals with OHexp in range of(0.2-1.2)×10^12 molecule/(cm^3·sec),corresponding to several days to weeks of equivalent atmospheric photochemical aging.The results informed that urban air at Lyon has high potency to contribute to SOA,and these SOA productions were favored from OH radical photochemical oxidation rather than via ozonolysis.Maximum SOA formation(36μg/m^3)was obtained at OHexp of about 7.4×10^11 molecule/(cm^3·sec),equivalent to approximately 5 days of atmospheric oxidation.The correlation between SOA formation and ambient environment conditions(RH&temperature,VOCs and PM)was observed.It was the first time to estimate SOA formation potential from ambient air over a long period in urban environment of Lyon.
文摘Lyon IARC多瘤病毒(LIPyV)是2017年于人类皮肤样本中新发现的病毒,为更加了解其致病性和流行病学状况,本试验拟建立一种灵敏度高、可快速检测LIPyV的SYBR Green I实时荧光定量PCR方法,并对该方法的特异性、灵敏性和重复性进行评价。结果显示:该检测方法的Ct值与标准品模板线性关系良好,相关系数为0.9989;利用该方法检测CBoV、FBoV、AGV2这几种病毒的基因组均没有出现非特异性扩增;敏感性比普通PCR检测方法高100倍;组内和组间重复性试验的变异系数小于1%;通过60份样本检测发现LIPyV阳性率为6.67%,比普通PCR更灵敏可靠。结果表明,本试验建立的SYBR Green I实时荧光定量PCR方法可用于LIPyV的快速检测。
