High-entropy materials(HEMs)have better mechanical,thermal,and electrical properties than traditional materials due to their special"high entropy effect".They can also adjust the performance of high entropy ...High-entropy materials(HEMs)have better mechanical,thermal,and electrical properties than traditional materials due to their special"high entropy effect".They can also adjust the performance of high entropy ceramics by adjusting the proportion of raw materials,and have broad application prospects in many fields.This article provides a review of the high entropy effect,preparation methods,and main applications of high entropy ceramic materials,especially exploring relevant research on high entropy perovskite ceramics.It is expected to provide reference for the promotion of scientific research and the development of further large-scale applications of high-entropy ceramic materials.展开更多
Rice tiller angle,as a component of plant architecture,affects rice grain yield via plant density.However,the molecular mechanism underlying rice tiller angle remains elusive.We report that the key domestication gene ...Rice tiller angle,as a component of plant architecture,affects rice grain yield via plant density.However,the molecular mechanism underlying rice tiller angle remains elusive.We report that the key domestication gene PROSTRATE GROWTH 1(PROG1)controls rice tiller angle by regulating shoot gravitropism and LAZY1(LA1)-mediated asymmetric distribution of auxin.Acting as a transcriptional repressor,PROG1 negatively regulates the expression of LA1 in light-grown rice seedlings.Overexpression of LA1 partially rescued the larger tiller angle of the PROG1 complementation transgenic plant(prog1-D).Double-mutant analysis showed that PROG1 acts upstream of LA1 to regulate shoot gravitropism and tiller angle.Mutation of Suppressors of lazy1(SOL1),encoding DWARF3(D3)acting in the strigolactone signal pathway,suppressed the large tiller angle of prog1-D by rescuing the transcription of LA1.The discovery of a light-sensitive PROG1-LA1 transcription regulatory module controlling rice shoot gravitropism and tiller angle sheds light on the genetic control of rice tiller angle.展开更多
Through systematic summary of domestic research documents about China's tourism-oriented poverty alleviation in recent 10 years,it is found that researches mainly focus on 5 aspects:effect of tourism-oriented pove...Through systematic summary of domestic research documents about China's tourism-oriented poverty alleviation in recent 10 years,it is found that researches mainly focus on 5 aspects:effect of tourism-oriented poverty alleviation,model and development strategy,benefit of poverty stricken people,practice of tourism-oriented poverty alleviation in specific region,and other related problems.At present,academic circle mainly has weak points of research content,method,object and region in tourism-oriented poverty alleviation.Finally,it points out key research interests:(1)Strengthening combination of qualitative and quantitative researches;(2)Expanding research fields and scope and promoting in-depth researches;(3)Analyzing benefiting mechanism of poverty-stricken people participating in tourism development in depth with poverty-stricken people as research objects;(4)Increasing scale development of perception research on effect of tourism-oriented poverty alleviation and research on measurement testing,to make subsequent research have reliability and comparability.展开更多
文摘High-entropy materials(HEMs)have better mechanical,thermal,and electrical properties than traditional materials due to their special"high entropy effect".They can also adjust the performance of high entropy ceramics by adjusting the proportion of raw materials,and have broad application prospects in many fields.This article provides a review of the high entropy effect,preparation methods,and main applications of high entropy ceramic materials,especially exploring relevant research on high entropy perovskite ceramics.It is expected to provide reference for the promotion of scientific research and the development of further large-scale applications of high-entropy ceramic materials.
基金supported by the Top Talents Program"One Case One Discussion(Yishiyiyi)"of Shandong Province and the Natural Science Foundation of Shandong Province(ZR2022MC082).
文摘Rice tiller angle,as a component of plant architecture,affects rice grain yield via plant density.However,the molecular mechanism underlying rice tiller angle remains elusive.We report that the key domestication gene PROSTRATE GROWTH 1(PROG1)controls rice tiller angle by regulating shoot gravitropism and LAZY1(LA1)-mediated asymmetric distribution of auxin.Acting as a transcriptional repressor,PROG1 negatively regulates the expression of LA1 in light-grown rice seedlings.Overexpression of LA1 partially rescued the larger tiller angle of the PROG1 complementation transgenic plant(prog1-D).Double-mutant analysis showed that PROG1 acts upstream of LA1 to regulate shoot gravitropism and tiller angle.Mutation of Suppressors of lazy1(SOL1),encoding DWARF3(D3)acting in the strigolactone signal pathway,suppressed the large tiller angle of prog1-D by rescuing the transcription of LA1.The discovery of a light-sensitive PROG1-LA1 transcription regulatory module controlling rice shoot gravitropism and tiller angle sheds light on the genetic control of rice tiller angle.
基金Supported by Fundamental Research Funds for the Central Universities in 2013(SWU1309219)of Southwest University
文摘Through systematic summary of domestic research documents about China's tourism-oriented poverty alleviation in recent 10 years,it is found that researches mainly focus on 5 aspects:effect of tourism-oriented poverty alleviation,model and development strategy,benefit of poverty stricken people,practice of tourism-oriented poverty alleviation in specific region,and other related problems.At present,academic circle mainly has weak points of research content,method,object and region in tourism-oriented poverty alleviation.Finally,it points out key research interests:(1)Strengthening combination of qualitative and quantitative researches;(2)Expanding research fields and scope and promoting in-depth researches;(3)Analyzing benefiting mechanism of poverty-stricken people participating in tourism development in depth with poverty-stricken people as research objects;(4)Increasing scale development of perception research on effect of tourism-oriented poverty alleviation and research on measurement testing,to make subsequent research have reliability and comparability.
