The research on sensitizer for dye sensitized solar cells based on (metallo)porphyrin/phthalocyanine materials were reviewed, and experimental design and assembly method were advised. Latest progress and research stat...The research on sensitizer for dye sensitized solar cells based on (metallo)porphyrin/phthalocyanine materials were reviewed, and experimental design and assembly method were advised. Latest progress and research status of sensitizer dyes based on metalloporphyrins applied in dye sensitized solar cells was summarized. The preparation and construction of sensitizer electrodes and dye sensitized solar cells based on metal organic frameworks (MOFs) of (metallo)porphyrin/phthalocyanine were projected.展开更多
代数学是伴随着早期文明的产生而产生的,它是最早的、有组织的智力活动之一。代数化是20世纪数学发展的一个重要特征和有效引擎,将代数的思想和方法渗透到其他领域的研究中,所呈现出的“交叉融合”的数学倾向是20世纪数学发展的特色之...代数学是伴随着早期文明的产生而产生的,它是最早的、有组织的智力活动之一。代数化是20世纪数学发展的一个重要特征和有效引擎,将代数的思想和方法渗透到其他领域的研究中,所呈现出的“交叉融合”的数学倾向是20世纪数学发展的特色之一。如果要对代数学的历史寻本挖源,它几乎可以和人类的文明史相媲美。著名数学大师范·德·瓦尔登(B.L.van der Waerden,1903—1996)认为,在美索不达米亚、埃及、中国以及印度的古代文明之前,就存在着一种文明,这种文明是大部分早期数学的源泉[1]。展开更多
Orientation-dependent transport properties induced by anisotropic molecules are enticing in single-molecule junctions.Here,using the first-principles method,we theoretically investigate spin transport properties and p...Orientation-dependent transport properties induced by anisotropic molecules are enticing in single-molecule junctions.Here,using the first-principles method,we theoretically investigate spin transport properties and photoresponse characteristics in trimesic acid magnetic single-molecule junctions with different molecular adsorption orientations and electrode contact sites.The transport calculations indicate that a single-molecule switch and a significant enhancement of spin transport and photoresponse can be achieved when the molecular adsorption orientation changes from planar geometry to upright geometry.The maximum spin polarization of current and photocurrent in upright molecular junctions exceeds 90%.Moreover,as the Ni tip electrode moves,the tunneling magnetoresistance of upright molecular junctions can be increased to 70%.The analysis of the spin-dependent PDOS elucidates that the spinterfaces between organic molecule and ferromagnetic electrodes are modulated by molecular adsorption orientation,where the molecule in upright molecular junctions yields higher spin polarization.Our theoretical work paves the way for designing spintronic devices and optoelectronic devices with anisotropic functionality base on anisotropic molecules.展开更多
Deterministic compartment models(CMs)and stochastic models,including stochastic CMs and agent-based models,are widely utilized in epidemic modeling.However,the relationship between CMs and their corresponding stochast...Deterministic compartment models(CMs)and stochastic models,including stochastic CMs and agent-based models,are widely utilized in epidemic modeling.However,the relationship between CMs and their corresponding stochastic models is not well understood.The present study aimed to address this gap by conducting a comparative study using the susceptible,exposed,infectious,and recovered(SEIR)model and its extended CMs from the coronavirus disease 2019 modeling literature.We demonstrated the equivalence of the numerical solution of CMs using the Euler scheme and their stochastic counterparts through theoretical analysis and simulations.Based on this equivalence,we proposed an efficient model calibration method that could replicate the exact solution of CMs in the corresponding stochastic models through parameter adjustment.The advancement in calibration techniques enhanced the accuracy of stochastic modeling in capturing the dynamics of epidemics.However,it should be noted that discrete-time stochastic models cannot perfectly reproduce the exact solution of continuous-time CMs.Additionally,we proposed a new stochastic compartment and agent mixed model as an alternative to agent-based models for large-scale population simulations with a limited number of agents.This model offered a balance between computational efficiency and accuracy.The results of this research contributed to the comparison and unification of deterministic CMs and stochastic models in epidemic modeling.Furthermore,the results had implications for the development of hybrid models that integrated the strengths of both frameworks.Overall,the present study has provided valuable epidemic modeling techniques and their practical applications for understanding and controlling the spread of infectious diseases.展开更多
股骨头坏死(osteonecrosis of the femoral head,ONFH)是骨科常见难治性疾病。中医治疗ONFH形成了以“三期四型”理论为核心的完善的辨证论治体系,证候是中医辨证论治ONFH的核心内容。然而,证候的生物学基础目前尚未明确,这已成为影响...股骨头坏死(osteonecrosis of the femoral head,ONFH)是骨科常见难治性疾病。中医治疗ONFH形成了以“三期四型”理论为核心的完善的辨证论治体系,证候是中医辨证论治ONFH的核心内容。然而,证候的生物学基础目前尚未明确,这已成为影响中医治疗ONFH临床疗效的提升及引起西医争议的关键问题。本文从ONFH的中医分期分型、ONFH中医辨证论治的现代内涵、ONFH证候生物学基础的研究近况及深化ONFH证候生物学基础研究的作用与展望等方面对深化ONFH证候生物学基础研究的重要性进行了探讨。展开更多
文摘The research on sensitizer for dye sensitized solar cells based on (metallo)porphyrin/phthalocyanine materials were reviewed, and experimental design and assembly method were advised. Latest progress and research status of sensitizer dyes based on metalloporphyrins applied in dye sensitized solar cells was summarized. The preparation and construction of sensitizer electrodes and dye sensitized solar cells based on metal organic frameworks (MOFs) of (metallo)porphyrin/phthalocyanine were projected.
文摘代数学是伴随着早期文明的产生而产生的,它是最早的、有组织的智力活动之一。代数化是20世纪数学发展的一个重要特征和有效引擎,将代数的思想和方法渗透到其他领域的研究中,所呈现出的“交叉融合”的数学倾向是20世纪数学发展的特色之一。如果要对代数学的历史寻本挖源,它几乎可以和人类的文明史相媲美。著名数学大师范·德·瓦尔登(B.L.van der Waerden,1903—1996)认为,在美索不达米亚、埃及、中国以及印度的古代文明之前,就存在着一种文明,这种文明是大部分早期数学的源泉[1]。
基金Project supported by the National Natural Science Foundation of China (Grant Nos.11974217,12204281,and 21933002)the Shandong Provincial Natural Science Foundation (Grant No.ZR2022QA068)。
文摘Orientation-dependent transport properties induced by anisotropic molecules are enticing in single-molecule junctions.Here,using the first-principles method,we theoretically investigate spin transport properties and photoresponse characteristics in trimesic acid magnetic single-molecule junctions with different molecular adsorption orientations and electrode contact sites.The transport calculations indicate that a single-molecule switch and a significant enhancement of spin transport and photoresponse can be achieved when the molecular adsorption orientation changes from planar geometry to upright geometry.The maximum spin polarization of current and photocurrent in upright molecular junctions exceeds 90%.Moreover,as the Ni tip electrode moves,the tunneling magnetoresistance of upright molecular junctions can be increased to 70%.The analysis of the spin-dependent PDOS elucidates that the spinterfaces between organic molecule and ferromagnetic electrodes are modulated by molecular adsorption orientation,where the molecule in upright molecular junctions yields higher spin polarization.Our theoretical work paves the way for designing spintronic devices and optoelectronic devices with anisotropic functionality base on anisotropic molecules.
基金supported by the National Natural Science Foundation of China(Grant Nos.82173620 to Yang Zhao and 82041024 to Feng Chen)partially supported by the Bill&Melinda Gates Foundation(Grant No.INV-006371 to Feng Chen)Priority Academic Program Development of Jiangsu Higher Education Institutions.
文摘Deterministic compartment models(CMs)and stochastic models,including stochastic CMs and agent-based models,are widely utilized in epidemic modeling.However,the relationship between CMs and their corresponding stochastic models is not well understood.The present study aimed to address this gap by conducting a comparative study using the susceptible,exposed,infectious,and recovered(SEIR)model and its extended CMs from the coronavirus disease 2019 modeling literature.We demonstrated the equivalence of the numerical solution of CMs using the Euler scheme and their stochastic counterparts through theoretical analysis and simulations.Based on this equivalence,we proposed an efficient model calibration method that could replicate the exact solution of CMs in the corresponding stochastic models through parameter adjustment.The advancement in calibration techniques enhanced the accuracy of stochastic modeling in capturing the dynamics of epidemics.However,it should be noted that discrete-time stochastic models cannot perfectly reproduce the exact solution of continuous-time CMs.Additionally,we proposed a new stochastic compartment and agent mixed model as an alternative to agent-based models for large-scale population simulations with a limited number of agents.This model offered a balance between computational efficiency and accuracy.The results of this research contributed to the comparison and unification of deterministic CMs and stochastic models in epidemic modeling.Furthermore,the results had implications for the development of hybrid models that integrated the strengths of both frameworks.Overall,the present study has provided valuable epidemic modeling techniques and their practical applications for understanding and controlling the spread of infectious diseases.
文摘股骨头坏死(osteonecrosis of the femoral head,ONFH)是骨科常见难治性疾病。中医治疗ONFH形成了以“三期四型”理论为核心的完善的辨证论治体系,证候是中医辨证论治ONFH的核心内容。然而,证候的生物学基础目前尚未明确,这已成为影响中医治疗ONFH临床疗效的提升及引起西医争议的关键问题。本文从ONFH的中医分期分型、ONFH中医辨证论治的现代内涵、ONFH证候生物学基础的研究近况及深化ONFH证候生物学基础研究的作用与展望等方面对深化ONFH证候生物学基础研究的重要性进行了探讨。
