From the establishment of dialogue relations between China and ASEAN in 1991 to the 30th anniversary of their dialogue relations in 2021,bilateral ties have been continuously elevated to a comprehensive strategic part...From the establishment of dialogue relations between China and ASEAN in 1991 to the 30th anniversary of their dialogue relations in 2021,bilateral ties have been continuously elevated to a comprehensive strategic partnership.We have witnessed relentless enhancement of political mutual trust,deepening economic cooperation,and closer people-to-people exchanges.The sustained development of the China-ASEAN bilateral partnership is precisely what has generated significant positive spillover e!ects,driving profound changes in China’s relations with neighboring countries.The various levels of partnerships China has established with neighboring countries will play an important role in shaping a networked,non-hierarchical regional order in the future,and such relationships have already become a key pathway for China and its neighbors to jointly build a community with a shared future in the region.展开更多
The uniqueness of meromorphic functions that share four values is investigated. A necessary condition to the case is acquired, and some partial results for question '1CM+3IM=4CM' are obtained.
At present, the speed of social and economic development is getting faster and faster, and the process of urbanization around the country is speeding up. In order to ensure the long-term stable development of enterpri...At present, the speed of social and economic development is getting faster and faster, and the process of urbanization around the country is speeding up. In order to ensure the long-term stable development of enterprises, enterprise managers should earnestly do a good job in financial sharing services and financial management. Understand the current actual situation of enterprise development, and comprehensively improve the effect and quality of financial management. We should also continuously optimize the existing financial management content to improve the overall management effect and management system. This paper mainly analyzes the impact of financial sharing service center on corporate financial management.展开更多
在强光照射下,CdS量子点易发生光腐蚀现象,通过金属掺杂和复合的方式可以提高CdS的光催化性能和光稳定性。采用水热法合成了Zn掺杂CdS/g-C_(3)N_(4)复合纳米材料(Zn-CdS/g-C_(3)N_(4))。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、...在强光照射下,CdS量子点易发生光腐蚀现象,通过金属掺杂和复合的方式可以提高CdS的光催化性能和光稳定性。采用水热法合成了Zn掺杂CdS/g-C_(3)N_(4)复合纳米材料(Zn-CdS/g-C_(3)N_(4))。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和傅里叶变换红外光谱(FT-IR)等手段对Zn-CdS/g-C_(3)N_(4)复合材料的形貌、结构和组成等进行了表征。结果表明,Zn-CdS纳米颗粒附着在g-C_(3)N_(4)表面上,从而形成Zn-CdS/g-C_(3)N_(4)复合材料,且复合后材料带隙减小,光生电子-空穴复合率降低。在500 W Xe灯照射下,研究了Zn-CdS/g-C_(3)N_(4)对罗丹明B(RhB)的光催化降解性能。在最优条件下,光照40 min后,所制备的Zn-CdS/g-C_(3)N_(4)对RhB的光催化降解效率达99%。此外,所合成的Zn-CdS/g-C_(3)N_(4)复合材料光稳定性较高、可再生性好。这归因于Zn和Cd的协同作用以及与g-C_(3)N_(4)的复合,促进了光生载流子的分离和转移。展开更多
文摘From the establishment of dialogue relations between China and ASEAN in 1991 to the 30th anniversary of their dialogue relations in 2021,bilateral ties have been continuously elevated to a comprehensive strategic partnership.We have witnessed relentless enhancement of political mutual trust,deepening economic cooperation,and closer people-to-people exchanges.The sustained development of the China-ASEAN bilateral partnership is precisely what has generated significant positive spillover e!ects,driving profound changes in China’s relations with neighboring countries.The various levels of partnerships China has established with neighboring countries will play an important role in shaping a networked,non-hierarchical regional order in the future,and such relationships have already become a key pathway for China and its neighbors to jointly build a community with a shared future in the region.
基金Project supported by the National Natural Science Foundation of China(19971052) and the Programme of Hunan Education Foundation(02C095)
文摘The uniqueness of meromorphic functions that share four values is investigated. A necessary condition to the case is acquired, and some partial results for question '1CM+3IM=4CM' are obtained.
文摘At present, the speed of social and economic development is getting faster and faster, and the process of urbanization around the country is speeding up. In order to ensure the long-term stable development of enterprises, enterprise managers should earnestly do a good job in financial sharing services and financial management. Understand the current actual situation of enterprise development, and comprehensively improve the effect and quality of financial management. We should also continuously optimize the existing financial management content to improve the overall management effect and management system. This paper mainly analyzes the impact of financial sharing service center on corporate financial management.
文摘在强光照射下,CdS量子点易发生光腐蚀现象,通过金属掺杂和复合的方式可以提高CdS的光催化性能和光稳定性。采用水热法合成了Zn掺杂CdS/g-C_(3)N_(4)复合纳米材料(Zn-CdS/g-C_(3)N_(4))。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)和傅里叶变换红外光谱(FT-IR)等手段对Zn-CdS/g-C_(3)N_(4)复合材料的形貌、结构和组成等进行了表征。结果表明,Zn-CdS纳米颗粒附着在g-C_(3)N_(4)表面上,从而形成Zn-CdS/g-C_(3)N_(4)复合材料,且复合后材料带隙减小,光生电子-空穴复合率降低。在500 W Xe灯照射下,研究了Zn-CdS/g-C_(3)N_(4)对罗丹明B(RhB)的光催化降解性能。在最优条件下,光照40 min后,所制备的Zn-CdS/g-C_(3)N_(4)对RhB的光催化降解效率达99%。此外,所合成的Zn-CdS/g-C_(3)N_(4)复合材料光稳定性较高、可再生性好。这归因于Zn和Cd的协同作用以及与g-C_(3)N_(4)的复合,促进了光生载流子的分离和转移。
