China's food security mainly depends on the core areas of food production.Under the dual constraints of resource scarcity and environmental degradation,improving the grain production efficiency of the main grain-p...China's food security mainly depends on the core areas of food production.Under the dual constraints of resource scarcity and environmental degradation,improving the grain production efficiency of the main grain-producing areas has become the fundamental way to strengthen the grain production capacity and improve the national food security capability,and to improve the efficiency of grain production in major grain-producing areas requires empirical support.This paper used the Super SBM model and the Malmquist index to measure the grain production efficiency of the main grain-producing areas from 2001 to 2020 from both static and dynamic perspectives,and compared the differences in grain production efficiency among different soil types and different provinces(autonomous regions)in the main grain-producing areas.The results showed that from 2001 to 2020,the grain production in the main grain-producing areas was in a relatively ineffective state,and the differences in grain production efficiency among different soil types and different provinces(autonomous regions)in the main grain-producing areas were obvious.The order of grain production efficiency in different soil types was black soil region>red-yellow soil region>paddy soil region>fluvo-aquic soil region,and the order of grain production efficiency of the provinces(autonomous regions)in the main grain-producing areas was Jilin>Heilongjiang>Inner Mongolia>Jiangxi>Hunan>Sichuan>Hubei>Jiangsu>Liaoning>Henan>Anhui>Shandong>Hebei.From 2001 to 2020,the total factor productivity of grain in the main grain-producing areas increased,but due to the trade-off between the technological progress and the growth of technical efficiency,the increase in the total factor productivity of grain in the main grain-producing areas was small,and the growth mainly came from the increase of input factors in this period.The total factor productivity of grain in Hebei,Heilongjiang,Liaoning,Jilin,Inner Mongolia,Shandong,Jiangsu,Henan and Anhui increased,but the increase was small,while the total factor productivity of grain in Jiangxi,Sichuan,Hunan and Hubei provinces declined.展开更多
With the social and economic development, there is growing demand in agricultural technique English. But there exist some obstacles in agricultural technique promotion. Some translators haven＇t paid attention to thei...With the social and economic development, there is growing demand in agricultural technique English. But there exist some obstacles in agricultural technique promotion. Some translators haven＇t paid attention to their needs and education levels of target readers in agricultural promotion that proves to be obscure translation rather than simple farming method. This paper conducted an investigation on modal values based on Halliday＇s systematic modality theory. Corpus quantitative research approach was used in the hope of gaining more insights into agriculture technique English. A comparative analysis was made between Brown Corpus and agricultural English Corpus （AEC） which contains 400 000 words, summarizing the differences in application of modal verbs across the two corpora. This study aimed to probe into modal values in practice of agricultural technique promotion texts in a way, which could be better understood by readers of target language.展开更多
Muscle satellite cells,as muscle stem cells,play a critical role in the process of muscle regeneration,and effective muscle regeneration helps to restore muscle function and maintain the homeostasis of muscle tissues....Muscle satellite cells,as muscle stem cells,play a critical role in the process of muscle regeneration,and effective muscle regeneration helps to restore muscle function and maintain the homeostasis of muscle tissues.In damaged muscle,muscle satellite cells are activated to form new myofibers through the process of cell proliferation,migration,differentiation and fusion to complete muscle tissue regeneration.Meanwhile,this process is mainly affected by endogenous gene expression and many exogenous factors.Researches in recent years have shown that vitamins,as important nutrients,play an extremely important role in the process of muscle regeneration.Therefore,this article reviewed the roles of vitamins in the regeneration of muscle satellite cells,according to the latest research progress.It would provide more theoretical and data support for the regeneration and repair of muscle damage,muscle atrophy and other muscle diseases,so that it could be better applied in the field of muscle regeneration researches and serve human health.展开更多
基金Supported by Science of China University Journals(CUJS2021-027)China Agricultural Journals Website 2021(CAJW2021-033)。
文摘China's food security mainly depends on the core areas of food production.Under the dual constraints of resource scarcity and environmental degradation,improving the grain production efficiency of the main grain-producing areas has become the fundamental way to strengthen the grain production capacity and improve the national food security capability,and to improve the efficiency of grain production in major grain-producing areas requires empirical support.This paper used the Super SBM model and the Malmquist index to measure the grain production efficiency of the main grain-producing areas from 2001 to 2020 from both static and dynamic perspectives,and compared the differences in grain production efficiency among different soil types and different provinces(autonomous regions)in the main grain-producing areas.The results showed that from 2001 to 2020,the grain production in the main grain-producing areas was in a relatively ineffective state,and the differences in grain production efficiency among different soil types and different provinces(autonomous regions)in the main grain-producing areas were obvious.The order of grain production efficiency in different soil types was black soil region>red-yellow soil region>paddy soil region>fluvo-aquic soil region,and the order of grain production efficiency of the provinces(autonomous regions)in the main grain-producing areas was Jilin>Heilongjiang>Inner Mongolia>Jiangxi>Hunan>Sichuan>Hubei>Jiangsu>Liaoning>Henan>Anhui>Shandong>Hebei.From 2001 to 2020,the total factor productivity of grain in the main grain-producing areas increased,but due to the trade-off between the technological progress and the growth of technical efficiency,the increase in the total factor productivity of grain in the main grain-producing areas was small,and the growth mainly came from the increase of input factors in this period.The total factor productivity of grain in Hebei,Heilongjiang,Liaoning,Jilin,Inner Mongolia,Shandong,Jiangsu,Henan and Anhui increased,but the increase was small,while the total factor productivity of grain in Jiangxi,Sichuan,Hunan and Hubei provinces declined.
文摘With the social and economic development, there is growing demand in agricultural technique English. But there exist some obstacles in agricultural technique promotion. Some translators haven＇t paid attention to their needs and education levels of target readers in agricultural promotion that proves to be obscure translation rather than simple farming method. This paper conducted an investigation on modal values based on Halliday＇s systematic modality theory. Corpus quantitative research approach was used in the hope of gaining more insights into agriculture technique English. A comparative analysis was made between Brown Corpus and agricultural English Corpus （AEC） which contains 400 000 words, summarizing the differences in application of modal verbs across the two corpora. This study aimed to probe into modal values in practice of agricultural technique promotion texts in a way, which could be better understood by readers of target language.
文摘Muscle satellite cells,as muscle stem cells,play a critical role in the process of muscle regeneration,and effective muscle regeneration helps to restore muscle function and maintain the homeostasis of muscle tissues.In damaged muscle,muscle satellite cells are activated to form new myofibers through the process of cell proliferation,migration,differentiation and fusion to complete muscle tissue regeneration.Meanwhile,this process is mainly affected by endogenous gene expression and many exogenous factors.Researches in recent years have shown that vitamins,as important nutrients,play an extremely important role in the process of muscle regeneration.Therefore,this article reviewed the roles of vitamins in the regeneration of muscle satellite cells,according to the latest research progress.It would provide more theoretical and data support for the regeneration and repair of muscle damage,muscle atrophy and other muscle diseases,so that it could be better applied in the field of muscle regeneration researches and serve human health.
