Carbonized polymer dots(CPDs),as a new type of carbon-based nanomaterials,have been widely used in the fields of biosensing,light-emitting devices,and energy storage systems due to their tunable photovoltaic propertie...Carbonized polymer dots(CPDs),as a new type of carbon-based nanomaterials,have been widely used in the fields of biosensing,light-emitting devices,and energy storage systems due to their tunable photovoltaic properties and abundant surface functional groups.Especially in energy storage,it has good prospects and applications as an artificial negative electrode protective layer for zinc-ion batteries(AZIBs).However,less research has been done on its use as an additive in zinc ion battery electrolyte6.We developed a method for the rapid synthesis of CPDs using citric acid as a substrate and urea as a nitrogen-doped additive using the microwave method at 1000W.The synthesized CPDs have graphitized carbon core centers as well as a wide range of peripheral functional groups.Due to the great potential of CPDs in the field of zinc ion batteries,we applied them as electrolyte additives in the electrolyte of aqueous zinc ion batteries,which can effectively inhibit the growth of dendrites on zinc anode,the precipitation of hydrogen and oxygen in the electrolyte,and at the same time,the corrosion current of the electrolyte on the anode is extremely low,which can greatly inhibit the corrosion of zinc anode in the electrolyte,and can effectively promote the rapid diffusion of zinc ions from the two-dimensional to the three-dimensional,which can greatly improve the long-cycle stability of zinc ion battery,as well as the stability of the long-cycle stability of the zinc ion battery.It can also effectively promote the rapid diffusion of zinc ions from two-dimensional to three-dimensional,which greatly improves the long cycle stability of zinc ion battery and the cycle life of the whole battery.The zinc iodine battery has a stable cycle time of 43,000 cycles,a capacity retention rate of 90%,and a Coulombic efficiency of 100%.展开更多
Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multip...Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multiple-Output(MIMO)Orthogonal Frequency Division Multiplexing(OFDM)signals as integrated signals and investigate the estimation performance of MIMO-OFDM signals.First,we analyze the Cramer-Rao Lower Bound(CRLB)of parameter estimation.Then,the transmit powers over different subcarriers are optimized to achieve the best tradeoff between the transmission rate and the estimation performance.Finally,we propose a more accurate estimation method that uses Canonical Polyadic Decomposition(CPD)of the third-order tensor to obtain the parameter matrices.Due to the characteristic of the column structure of the parameter matrices,we only need to use DFT/IDFT to recover the parameters of multiple targets.The simulation results show that tensor-based estimation method can achieve a performance close to CRLB,and the estimation performance can be improved by optimizing the transmit powers.展开更多
Although mixed lineage kinase domain-like protein(MLKL)is widely recognized as a critical effector in the necroptotic signaling pathway,MLKL plays broader regulatory roles beyond programmed necroptosis.Notably,Xuan Yu...Although mixed lineage kinase domain-like protein(MLKL)is widely recognized as a critical effector in the necroptotic signaling pathway,MLKL plays broader regulatory roles beyond programmed necroptosis.Notably,Xuan Yuan et al demonstrated that CPD4,an ATP-binding pocket inhibitor of MLKL,significantly reduces liver inflammation and improves liver function by inhibiting NF-κB signaling,suggesting its use as a potential therapeutic candidate for alcoholic liver disease.However,the pharmacokinetic properties and long-term toxicity of CPD4 require further evaluation.Moreover,a single therapeutic strategy targeting MLKL may not be sufficient.Future studies should focus on the precise regulation of MLKL and develop combination therapies to achieve dual intervention of inflammatory and cell death pathways.This paper provides an important theoretical foundation for translational research on MLKL-targeted therapy.However,its clinical translation requires overcoming existing limitations and further elucidating the regulatory network of MLKL in complex microenvironments.展开更多
Additive engineering significantly enhances the photovoltaic performance of perovskite solar cells(PSCs).The atomistic and mechanistic origins of these jfurther investigation to fully understand the physicochemical in...Additive engineering significantly enhances the photovoltaic performance of perovskite solar cells(PSCs).The atomistic and mechanistic origins of these jfurther investigation to fully understand the physicochemical interactions of additives with the perovskite lattice,band structure,and charge carriers.Herein,how additives of cellulose triacetate(CTA)improve the photovoltaic performance and stability of perovskite solar cells(PSCs)is shown.These improvements are found to stem from the formation of hydrogen bonds between CTA molecules and organic cations.The Kelvin probe force microscopy results show that contact potential difference variation under dark and light conditions increases from 79.68 to 141.24 mV by doping CTA,indicating enhanced separation of electron-hole pairs in perovskite.The piezoresponse force microscopy(PFM)tests indicate that CTA additives reduce the PFM amplitude by approximately 50 pm under dark and light conditions and inhibit flipping from antiferroelectric domains to ferroelectric domains.Moreover,the CTA additives regulate the charge distribution within the PbI6 octahedron and bind organic ions through hydrogen bonding,forming a compact film structure.These findings not only improve the long-term stability of organic-inorganic hybrid perovskites(OIHPs),but also pave the way for developing novel strategies for large-scale PSCs.展开更多
基金supported by the National Natural Science Foundation of China(22035001,22275030 and 22209023)the Jilin Provincial Education Department(JJKH20231304KJ)the Jilin Province Scienceand Technology Development Plan Project(International Cooperation 20240402073GH).
文摘Carbonized polymer dots(CPDs),as a new type of carbon-based nanomaterials,have been widely used in the fields of biosensing,light-emitting devices,and energy storage systems due to their tunable photovoltaic properties and abundant surface functional groups.Especially in energy storage,it has good prospects and applications as an artificial negative electrode protective layer for zinc-ion batteries(AZIBs).However,less research has been done on its use as an additive in zinc ion battery electrolyte6.We developed a method for the rapid synthesis of CPDs using citric acid as a substrate and urea as a nitrogen-doped additive using the microwave method at 1000W.The synthesized CPDs have graphitized carbon core centers as well as a wide range of peripheral functional groups.Due to the great potential of CPDs in the field of zinc ion batteries,we applied them as electrolyte additives in the electrolyte of aqueous zinc ion batteries,which can effectively inhibit the growth of dendrites on zinc anode,the precipitation of hydrogen and oxygen in the electrolyte,and at the same time,the corrosion current of the electrolyte on the anode is extremely low,which can greatly inhibit the corrosion of zinc anode in the electrolyte,and can effectively promote the rapid diffusion of zinc ions from the two-dimensional to the three-dimensional,which can greatly improve the long-cycle stability of zinc ion battery,as well as the stability of the long-cycle stability of the zinc ion battery.It can also effectively promote the rapid diffusion of zinc ions from two-dimensional to three-dimensional,which greatly improves the long cycle stability of zinc ion battery and the cycle life of the whole battery.The zinc iodine battery has a stable cycle time of 43,000 cycles,a capacity retention rate of 90%,and a Coulombic efficiency of 100%.
基金supported by the National Natural Science Foundation of China under grants 62072229,U1936201,62071220,61976113joint project of China Mobile Research Institute&X-NET。
文摘Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multiple-Output(MIMO)Orthogonal Frequency Division Multiplexing(OFDM)signals as integrated signals and investigate the estimation performance of MIMO-OFDM signals.First,we analyze the Cramer-Rao Lower Bound(CRLB)of parameter estimation.Then,the transmit powers over different subcarriers are optimized to achieve the best tradeoff between the transmission rate and the estimation performance.Finally,we propose a more accurate estimation method that uses Canonical Polyadic Decomposition(CPD)of the third-order tensor to obtain the parameter matrices.Due to the characteristic of the column structure of the parameter matrices,we only need to use DFT/IDFT to recover the parameters of multiple targets.The simulation results show that tensor-based estimation method can achieve a performance close to CRLB,and the estimation performance can be improved by optimizing the transmit powers.
文摘Although mixed lineage kinase domain-like protein(MLKL)is widely recognized as a critical effector in the necroptotic signaling pathway,MLKL plays broader regulatory roles beyond programmed necroptosis.Notably,Xuan Yuan et al demonstrated that CPD4,an ATP-binding pocket inhibitor of MLKL,significantly reduces liver inflammation and improves liver function by inhibiting NF-κB signaling,suggesting its use as a potential therapeutic candidate for alcoholic liver disease.However,the pharmacokinetic properties and long-term toxicity of CPD4 require further evaluation.Moreover,a single therapeutic strategy targeting MLKL may not be sufficient.Future studies should focus on the precise regulation of MLKL and develop combination therapies to achieve dual intervention of inflammatory and cell death pathways.This paper provides an important theoretical foundation for translational research on MLKL-targeted therapy.However,its clinical translation requires overcoming existing limitations and further elucidating the regulatory network of MLKL in complex microenvironments.
基金supported by the National Natural Science Foundation of China(No.U2130128)Yanzhao Young Scientist Project from Natural Science Foundation of Hebei Province(Nos.B2023205040)+4 种基金Basic Research Cooperation Special Foundation of Beijing-Tianjin-Hebei Region(Nos.H2022205047,22JCZXJC00060 and E3B33911DF)Hebei Administration for Market Supervision Science and Technology Project List(No.2023ZC03)the Innovation Capability Improvement Plan Project of Hebei Province(No.22567604H)Ph.D.Scientific Research Start-up Fund of Hebei Normal University(No.L2023B18)College Student’s Innovation and Entrepreneurship Training Plan Program(No.S202410094046).
文摘Additive engineering significantly enhances the photovoltaic performance of perovskite solar cells(PSCs).The atomistic and mechanistic origins of these jfurther investigation to fully understand the physicochemical interactions of additives with the perovskite lattice,band structure,and charge carriers.Herein,how additives of cellulose triacetate(CTA)improve the photovoltaic performance and stability of perovskite solar cells(PSCs)is shown.These improvements are found to stem from the formation of hydrogen bonds between CTA molecules and organic cations.The Kelvin probe force microscopy results show that contact potential difference variation under dark and light conditions increases from 79.68 to 141.24 mV by doping CTA,indicating enhanced separation of electron-hole pairs in perovskite.The piezoresponse force microscopy(PFM)tests indicate that CTA additives reduce the PFM amplitude by approximately 50 pm under dark and light conditions and inhibit flipping from antiferroelectric domains to ferroelectric domains.Moreover,the CTA additives regulate the charge distribution within the PbI6 octahedron and bind organic ions through hydrogen bonding,forming a compact film structure.These findings not only improve the long-term stability of organic-inorganic hybrid perovskites(OIHPs),but also pave the way for developing novel strategies for large-scale PSCs.
