Lyantria dispar larvae were fed with the leaves of Populus deltoids seedlings exposed to methyl jasmonate （MeJA） for 24 h. The growth and development of the larvae were investigated, and phenolics contents in treate...Lyantria dispar larvae were fed with the leaves of Populus deltoids seedlings exposed to methyl jasmonate （MeJA） for 24 h. The growth and development of the larvae were investigated, and phenolics contents in treated leaves including pyrocatechol, caffeic acid, coumarin, fernlic acid and benzoic acid were also surveyed by high-pressure liquid chromatography （HPLC）. Results indicated that approximate digestibility, efficiency of conversion of ingested food, efficiency of conversion of digested food, and weight of the larvae were inhibited obviously, especially from the sixth day, which may result from the increase of total phenolics contents in treated leaves. This result provides strong supports for MeJA acting as the airborne signal molecule between woody plants.展开更多
A large country will undoubtedly show development disparity among its regions: it is not surprising therefore that China would not have developed evenly. In analyzing China’s development features and its manner of en...A large country will undoubtedly show development disparity among its regions: it is not surprising therefore that China would not have developed evenly. In analyzing China’s development features and its manner of enforcing relative policies, the various financial sectors in China cannot be simply regarded as a whole unit: a unified policy would not be suitable for the local conditions of a given area, otherwise it will lost its future direction. This paper measures China’s disparity of financial development during the period展开更多
Since the Reform and Opening-up policy had been implemented in 1978, China's Mainland has experienced significant economic growth, with GDP rising on an annual average of about 10%. However, this growth miracle wa...Since the Reform and Opening-up policy had been implemented in 1978, China's Mainland has experienced significant economic growth, with GDP rising on an annual average of about 10%. However, this growth miracle was far from being evenly distributed across space. It is, therefore, the aim of this paper to study the evolution of spatial disparities in economic development across the country between 1993 and 2012, a period which is characterized by all provinces having access to international markets and being open for international investors. We seek to answer the question of whether Central and Western Chinese provinces were catching up with the East. We define ＇catching up＇ as a growing similarity among spatial units. Convergence processes might manifest in four dimensions, including （1） the spatial allocation of employment, value added generation and the fixed capital stock, （2） forms of technical change, （3） productivity patterns, and （4） income distribution. Results show that persistent phases of convergence appeared. However, in some cases the catching up of China＇s less developed parts with the flourishing East was limited to only a few Western and Central Chinese provinces. A high degree of path-dependency in economic development prevented catching up from taking place in a more uniform manner.展开更多
基金This research was supported by National Natural Science Foundation of China (No.30170764)
文摘Lyantria dispar larvae were fed with the leaves of Populus deltoids seedlings exposed to methyl jasmonate （MeJA） for 24 h. The growth and development of the larvae were investigated, and phenolics contents in treated leaves including pyrocatechol, caffeic acid, coumarin, fernlic acid and benzoic acid were also surveyed by high-pressure liquid chromatography （HPLC）. Results indicated that approximate digestibility, efficiency of conversion of ingested food, efficiency of conversion of digested food, and weight of the larvae were inhibited obviously, especially from the sixth day, which may result from the increase of total phenolics contents in treated leaves. This result provides strong supports for MeJA acting as the airborne signal molecule between woody plants.
文摘A large country will undoubtedly show development disparity among its regions: it is not surprising therefore that China would not have developed evenly. In analyzing China’s development features and its manner of enforcing relative policies, the various financial sectors in China cannot be simply regarded as a whole unit: a unified policy would not be suitable for the local conditions of a given area, otherwise it will lost its future direction. This paper measures China’s disparity of financial development during the period
文摘Since the Reform and Opening-up policy had been implemented in 1978, China's Mainland has experienced significant economic growth, with GDP rising on an annual average of about 10%. However, this growth miracle was far from being evenly distributed across space. It is, therefore, the aim of this paper to study the evolution of spatial disparities in economic development across the country between 1993 and 2012, a period which is characterized by all provinces having access to international markets and being open for international investors. We seek to answer the question of whether Central and Western Chinese provinces were catching up with the East. We define ＇catching up＇ as a growing similarity among spatial units. Convergence processes might manifest in four dimensions, including （1） the spatial allocation of employment, value added generation and the fixed capital stock, （2） forms of technical change, （3） productivity patterns, and （4） income distribution. Results show that persistent phases of convergence appeared. However, in some cases the catching up of China＇s less developed parts with the flourishing East was limited to only a few Western and Central Chinese provinces. A high degree of path-dependency in economic development prevented catching up from taking place in a more uniform manner.
