For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive ...For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive properties of PseEMs remains lacking.Here,we demonstrate a universal chargecompensating strategy to improve the charge-storage capability of PseEMs intrinsically:ⅰ) in the electrolyte with anion as charge carriers(such as OH-),reducing the multivalent cations of PseEMs into lower valences could create more reversible low-to-high valence redox cou ples to promote the intercalation of the anions;ⅱ) in the electrolytes with cation as charge carriers(such as H^(+),Li^(+),Na^(+)),oxidizing the multivalent cations of PseEMs into higher valences could introduce more reversible high-to-low valence redox couples to promote the intercalation of the cations.And we demonstrated that the improved intrinsic charge-storage capability for PseEMs originates from the increased Faradaic charge storage sites.展开更多
Starting from the supposition of time-space substitution, the Langbein-Schumm's Law was applied to deal with response of fluvial erosion System to the changes in mean annual Precipitation induced by global green-h...Starting from the supposition of time-space substitution, the Langbein-Schumm's Law was applied to deal with response of fluvial erosion System to the changes in mean annual Precipitation induced by global green-house warming. As a result, a simple method was put forward to predict change in sediment yield, with Ningxia Hui Autonomous Region in the northern fringe of the Loess Plateau of China as an example. Results show that, even the change in mean annual precipitation is the same, the direction and magnitude of the resultant chang in sediment yteld would be quite different in fferent physico-geographical zones. When mean annual precipitation is increased, sediment yield in arid or semi-arid areas with a mean anntal Peripitation of less than 400 mm will be increased, while sediment yield in sub-humid or humid areas with a mean annual precipitation of more than 400 mm will be decreased.Additionally, the complex response of fluvial erosion system in time series due to the lag of change in vegetation behind the changn in precipitation has also been qualitatively discussed in this paper.展开更多
As China celebrates 40 years of reform and opening up,it shares mutual development with Africa The default impression of China for many foreigners three or four decades ago was kungfu movies.However,things have change...As China celebrates 40 years of reform and opening up,it shares mutual development with Africa The default impression of China for many foreigners three or four decades ago was kungfu movies.However,things have changed and the country has transformed into a land of highspeed展开更多
The existence and iteration of positive solution for classical Gelfand models are considered, where the coefficient of nonlinear term is allowed to change sign in [0, 1]. By using the monotone iterative technique, an ...The existence and iteration of positive solution for classical Gelfand models are considered, where the coefficient of nonlinear term is allowed to change sign in [0, 1]. By using the monotone iterative technique, an existence theorem of positive solution is obtained, corresponding iterative process and convergence rate are given. This iterative process starts off with zero function, hence the process is simple, feasible and effective.展开更多
Appraisal Theory is a part of the interpersonal metafunction in Systemic Functional Linguistics to reveal the speaker＇s attitudes and positionings. Some scholars in recent years have introduced this theory to the Chi...Appraisal Theory is a part of the interpersonal metafunction in Systemic Functional Linguistics to reveal the speaker＇s attitudes and positionings. Some scholars in recent years have introduced this theory to the Chinese reader and applied it to the study of different genres, but up to now, very little has been done to test this newly developed theory in translation studies. This paper attempts to use the Appraisal Theory as a tool to investigate speaker＇s positioning in ST （source text） and TT （target text）. The translations of part of the Q＆A （Question＆Answer） section of the Vice President Cheney＇s speech at Fudan University and their STs will be investigated in the present study. The source and target texts are first described in the appraisal theoretical framework and then compared to find out the differences in terms of the speaker＇s positioning in ST and TT. Finally, a discussion is carried out to explore possible reasons that caused the speaker＇s changed positioning from ST and TT. Our findings indicate that translator＇s role, linguistic characteristics, and translation purpose might all contribute to speaker＇s changed positioning.展开更多
Men sometimes say, 'We are better and cleverer than women. Women never invent things. We do. ' It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too. [原译]...Men sometimes say, 'We are better and cleverer than women. Women never invent things. We do. ' It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too. [原译]男人常说:“我们比女人更能干、更聪明。女人决不会发明什么。可我们会的。”的确,男人发明了许多有用的家伙:字母表、机器、火箭,还有枪炮。 [改译]男人常说:“我们比女人更聪明能干。她们从未发明过东西。展开更多
A selective review of the literature demonstrates the difficulty in defining‘vernacular architecture’.Recent studies have presented an overly narrow,single-sided,or even unacceptable image of the topic in comp...A selective review of the literature demonstrates the difficulty in defining‘vernacular architecture’.Recent studies have presented an overly narrow,single-sided,or even unacceptable image of the topic in comparison with many earlier definitions and discussions.However,those earlier analyses also had various shortfalls.The interdependence of vernacular architecture,economic interests,and emerging awareness of buildings’interaction with the environment demand a rethinking of vernacular architecture,which the present study understands as signifying housing offered for most of the world’s population.展开更多
In the research of bio-molecular chips and sensors, extra electric biases are most often employed to control and manipulate the DNA and protein molecules moving through micro/nano-fluidic channels. In order to accurat...In the research of bio-molecular chips and sensors, extra electric biases are most often employed to control and manipulate the DNA and protein molecules moving through micro/nano-fluidic channels. In order to accurately and flexibly control the bio-molecules as they move within the channels, a clear understanding of how the current changes within the buffer solution caused by an applied bias is fundamental. In this report, the current changed value of different buffer solutions, e.g., KC1, TE, and TBE was systematically studied with real-time monitoring and quantitative analysis in the situation of the buffers moving through a fluidic channel with a 5 μm inner diameter, driven by biases of 50 or 100 mV. The results revealed that the relation- ship between the current changed value and the pause interval of the applied electric field is highly consistent with the Hill Equation, which is helpful for accurately detecting and manipulating single biomolecules in microfluidic sensors and biochips.展开更多
Men sometimes say, "We are better and cleverer than women. Women never invent things. We do. " It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too.
“Are you too stupid to do anything right?”These words—said by a woman to a little boy who was evidently her son—were spoken because he had walked away from her.Andthey were said at a volume high enough that all th...“Are you too stupid to do anything right?”These words—said by a woman to a little boy who was evidently her son—were spoken because he had walked away from her.Andthey were said at a volume high enough that all the strangersin the vicinity could hear.Chastised,the boy returned quiet-ly to the woman’s side,his eyes downcast.Not a big moment,perhaps.Yet small moments some-展开更多
CHEN Xueping was born at the beginning of this century, in Sanhe County, Hebei Province. At that time the economy in Sanhe, an agricultural county, was backward with only a few limekilns and coal mines. Chen Xueping m...CHEN Xueping was born at the beginning of this century, in Sanhe County, Hebei Province. At that time the economy in Sanhe, an agricultural county, was backward with only a few limekilns and coal mines. Chen Xueping married into the Zhang family in Duanjialing Village when展开更多
基金supported by the National Natural Science Foundation of China(51972146,52072150)。
文摘For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive properties of PseEMs remains lacking.Here,we demonstrate a universal chargecompensating strategy to improve the charge-storage capability of PseEMs intrinsically:ⅰ) in the electrolyte with anion as charge carriers(such as OH-),reducing the multivalent cations of PseEMs into lower valences could create more reversible low-to-high valence redox cou ples to promote the intercalation of the anions;ⅱ) in the electrolytes with cation as charge carriers(such as H^(+),Li^(+),Na^(+)),oxidizing the multivalent cations of PseEMs into higher valences could introduce more reversible high-to-low valence redox couples to promote the intercalation of the cations.And we demonstrated that the improved intrinsic charge-storage capability for PseEMs originates from the increased Faradaic charge storage sites.
文摘Starting from the supposition of time-space substitution, the Langbein-Schumm's Law was applied to deal with response of fluvial erosion System to the changes in mean annual Precipitation induced by global green-house warming. As a result, a simple method was put forward to predict change in sediment yield, with Ningxia Hui Autonomous Region in the northern fringe of the Loess Plateau of China as an example. Results show that, even the change in mean annual precipitation is the same, the direction and magnitude of the resultant chang in sediment yteld would be quite different in fferent physico-geographical zones. When mean annual precipitation is increased, sediment yield in arid or semi-arid areas with a mean anntal Peripitation of less than 400 mm will be increased, while sediment yield in sub-humid or humid areas with a mean annual precipitation of more than 400 mm will be decreased.Additionally, the complex response of fluvial erosion system in time series due to the lag of change in vegetation behind the changn in precipitation has also been qualitatively discussed in this paper.
文摘As China celebrates 40 years of reform and opening up,it shares mutual development with Africa The default impression of China for many foreigners three or four decades ago was kungfu movies.However,things have changed and the country has transformed into a land of highspeed
文摘The existence and iteration of positive solution for classical Gelfand models are considered, where the coefficient of nonlinear term is allowed to change sign in [0, 1]. By using the monotone iterative technique, an existence theorem of positive solution is obtained, corresponding iterative process and convergence rate are given. This iterative process starts off with zero function, hence the process is simple, feasible and effective.
文摘Appraisal Theory is a part of the interpersonal metafunction in Systemic Functional Linguistics to reveal the speaker＇s attitudes and positionings. Some scholars in recent years have introduced this theory to the Chinese reader and applied it to the study of different genres, but up to now, very little has been done to test this newly developed theory in translation studies. This paper attempts to use the Appraisal Theory as a tool to investigate speaker＇s positioning in ST （source text） and TT （target text）. The translations of part of the Q＆A （Question＆Answer） section of the Vice President Cheney＇s speech at Fudan University and their STs will be investigated in the present study. The source and target texts are first described in the appraisal theoretical framework and then compared to find out the differences in terms of the speaker＇s positioning in ST and TT. Finally, a discussion is carried out to explore possible reasons that caused the speaker＇s changed positioning from ST and TT. Our findings indicate that translator＇s role, linguistic characteristics, and translation purpose might all contribute to speaker＇s changed positioning.
文摘Men sometimes say, 'We are better and cleverer than women. Women never invent things. We do. ' It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too. [原译]男人常说:“我们比女人更能干、更聪明。女人决不会发明什么。可我们会的。”的确,男人发明了许多有用的家伙:字母表、机器、火箭,还有枪炮。 [改译]男人常说:“我们比女人更聪明能干。她们从未发明过东西。
文摘A selective review of the literature demonstrates the difficulty in defining‘vernacular architecture’.Recent studies have presented an overly narrow,single-sided,or even unacceptable image of the topic in comparison with many earlier definitions and discussions.However,those earlier analyses also had various shortfalls.The interdependence of vernacular architecture,economic interests,and emerging awareness of buildings’interaction with the environment demand a rethinking of vernacular architecture,which the present study understands as signifying housing offered for most of the world’s population.
基金supported by the Major Research Plan of the National Natural Science Foundation of China(Grant No.91123030)the Interna-tional Cooperation Foundation of the National Science and Technology Major Project of the Ministry of Science and Technology of China(Grant No.2011DFA12220)the National Natural Science Foundation of China(Grant No.61378083)
文摘In the research of bio-molecular chips and sensors, extra electric biases are most often employed to control and manipulate the DNA and protein molecules moving through micro/nano-fluidic channels. In order to accurately and flexibly control the bio-molecules as they move within the channels, a clear understanding of how the current changes within the buffer solution caused by an applied bias is fundamental. In this report, the current changed value of different buffer solutions, e.g., KC1, TE, and TBE was systematically studied with real-time monitoring and quantitative analysis in the situation of the buffers moving through a fluidic channel with a 5 μm inner diameter, driven by biases of 50 or 100 mV. The results revealed that the relation- ship between the current changed value and the pause interval of the applied electric field is highly consistent with the Hill Equation, which is helpful for accurately detecting and manipulating single biomolecules in microfluidic sensors and biochips.
文摘Men sometimes say, "We are better and cleverer than women. Women never invent things. We do. " It is true that men have invented a lot of useful things: the alphabet, machines, rockets, and guns, too.
文摘“Are you too stupid to do anything right?”These words—said by a woman to a little boy who was evidently her son—were spoken because he had walked away from her.Andthey were said at a volume high enough that all the strangersin the vicinity could hear.Chastised,the boy returned quiet-ly to the woman’s side,his eyes downcast.Not a big moment,perhaps.Yet small moments some-
文摘CHEN Xueping was born at the beginning of this century, in Sanhe County, Hebei Province. At that time the economy in Sanhe, an agricultural county, was backward with only a few limekilns and coal mines. Chen Xueping married into the Zhang family in Duanjialing Village when
