目的通过综述金属有机框架材料(metal-organic frameworks,MOFs)固定化漆酶研究进展为后续MOFs固定化漆酶的选择和设计提供指导。方法利用Web of Science与中国知网等检索平台,查阅相关文献,总结近年来MOFs固定化漆酶的最新进展。结果...目的通过综述金属有机框架材料(metal-organic frameworks,MOFs)固定化漆酶研究进展为后续MOFs固定化漆酶的选择和设计提供指导。方法利用Web of Science与中国知网等检索平台,查阅相关文献,总结近年来MOFs固定化漆酶的最新进展。结果本文综述了近年来MOFs固定化漆酶的研究进展和其活性评价方法,并且分析了在使用物理吸附法和共价结合法固定漆酶的过程中,漆酶投加量和固定化时间对固定化效率的影响,还介绍了固定化对漆酶最适pH和最适温度的改变,并且对漆酶和介体的共固定化进行了总结,最后,介绍了MOFs固定化漆酶在废水处理中的应用。结论MOFs因其高吸附容量和灵活的结构已成为漆酶固定化研究的热门载体。展开更多
As a new three-dimensional(3-D)modulation,Polarization Quadrature Amplitude Modulation(PQAM) can be regarded as the combination of Pulse amplitude modulation(PAM) and Quadrature Amplitude Modulation(QAM) Modulation.It...As a new three-dimensional(3-D)modulation,Polarization Quadrature Amplitude Modulation(PQAM) can be regarded as the combination of Pulse amplitude modulation(PAM) and Quadrature Amplitude Modulation(QAM) Modulation.It can better improve the digital communication efficiency and reduce the Symbol error rate(SER) of the system than one-dimensional or two-dimensional modulation scheme.How to design a feasible constellation is the most concerned problem of PQAM currently.This paper first studies the relationship between the SER theoretical value of PQAM and the distribution of M and N,proposes a new M,N allocation scheme.Secondly,a new and straightforward design method of constructing higher-level 3-D signal constellations,which can be matched with the PQAM,and the constellation can divided into three different structures according to the ary for PQAM.Finally,the simulation results show that:in PQAM system,the modulation scheme and the constellation mapping scheme are proposed in this paper which can effectively reduce the system SER and improve the anti-noise performance of the system.展开更多
文摘目的通过综述金属有机框架材料(metal-organic frameworks,MOFs)固定化漆酶研究进展为后续MOFs固定化漆酶的选择和设计提供指导。方法利用Web of Science与中国知网等检索平台,查阅相关文献,总结近年来MOFs固定化漆酶的最新进展。结果本文综述了近年来MOFs固定化漆酶的研究进展和其活性评价方法,并且分析了在使用物理吸附法和共价结合法固定漆酶的过程中,漆酶投加量和固定化时间对固定化效率的影响,还介绍了固定化对漆酶最适pH和最适温度的改变,并且对漆酶和介体的共固定化进行了总结,最后,介绍了MOFs固定化漆酶在废水处理中的应用。结论MOFs因其高吸附容量和灵活的结构已成为漆酶固定化研究的热门载体。
基金supported in part by the National Natural Science Foundation of China (61561039, 61271177, and 61461044)
文摘As a new three-dimensional(3-D)modulation,Polarization Quadrature Amplitude Modulation(PQAM) can be regarded as the combination of Pulse amplitude modulation(PAM) and Quadrature Amplitude Modulation(QAM) Modulation.It can better improve the digital communication efficiency and reduce the Symbol error rate(SER) of the system than one-dimensional or two-dimensional modulation scheme.How to design a feasible constellation is the most concerned problem of PQAM currently.This paper first studies the relationship between the SER theoretical value of PQAM and the distribution of M and N,proposes a new M,N allocation scheme.Secondly,a new and straightforward design method of constructing higher-level 3-D signal constellations,which can be matched with the PQAM,and the constellation can divided into three different structures according to the ary for PQAM.Finally,the simulation results show that:in PQAM system,the modulation scheme and the constellation mapping scheme are proposed in this paper which can effectively reduce the system SER and improve the anti-noise performance of the system.