Linked tetra shaft and double cantilever flat flap gate is a new type of structure in water conservancy projects,but the traditional method is now adopted in its design.In order to the application and dissemination ...Linked tetra shaft and double cantilever flat flap gate is a new type of structure in water conservancy projects,but the traditional method is now adopted in its design.In order to the application and dissemination of the type of sluice,this paper researches the difficult points of design advance,through researching the motion locus & stress coundition of linked tetra shaft system.The writer will build up the mathmatical model and handle it with the computer.Thus,we can achieve the modern desing on the basis of the software of linked tetra shaft system development.展开更多
Ⅰ. AN OVERVIEW OF THE THIRD GEN-ERATION COMMAND AND CONTROL COMMUNICATIONS SYSTEM (CC3) OF THE HONG KONG POLICE FORCE1.1 CC1The first generation command and control communi-cations center of the HKPF (CC1) was establ...Ⅰ. AN OVERVIEW OF THE THIRD GEN-ERATION COMMAND AND CONTROL COMMUNICATIONS SYSTEM (CC3) OF THE HONG KONG POLICE FORCE1.1 CC1The first generation command and control communi-cations center of the HKPF (CC1) was established展开更多
Exploring a new and robust material for proton conduction is of significant importance to the scientific interest and technological importance.Polyoxometalates(POMs)are a class of molecular anion metal oxide clusters ...Exploring a new and robust material for proton conduction is of significant importance to the scientific interest and technological importance.Polyoxometalates(POMs)are a class of molecular anion metal oxide clusters with well-defined structures and diverse properties.Therefore,the design and synthesis of a POM-based material for proton conduction is extremely vital.Herein,a dimeric four tartaric acid-bridged tetra-Zr-incorporated arsenotungstate.展开更多
Recently,CsPbBr_(3)perovskite solar cells(PSCs)have garnered attention due to cost-effectiveness and reliability.However,hole transport limitations lead to charge recombination and lower power conversion efficiency(PC...Recently,CsPbBr_(3)perovskite solar cells(PSCs)have garnered attention due to cost-effectiveness and reliability.However,hole transport limitations lead to charge recombination and lower power conversion efficiency(PCE).Defects in the CsPbBr_(3)layer,poor hole transport at the interface with carbon electrodes,and energy level differences hinder performance.Optimizing the perovskite layer using electrondonating organic molecules containing-NH_(2)groups enhances efficiency and stability by passivating defects and modulating lattice structure.In this work,tetra(4-aminophenyl)ethylene(TPE)and tetra(4-aminobiphenyl)ethylene(TPE-Ph)were employed to optimize the CsPbBr_(3)/carbon electrode interface.Their strong electron-donating properties and amino groups facilitate hole transfer and defect passivation,boosting PCE to 9.38%and enhancing stability.展开更多
文摘Linked tetra shaft and double cantilever flat flap gate is a new type of structure in water conservancy projects,but the traditional method is now adopted in its design.In order to the application and dissemination of the type of sluice,this paper researches the difficult points of design advance,through researching the motion locus & stress coundition of linked tetra shaft system.The writer will build up the mathmatical model and handle it with the computer.Thus,we can achieve the modern desing on the basis of the software of linked tetra shaft system development.
文摘Ⅰ. AN OVERVIEW OF THE THIRD GEN-ERATION COMMAND AND CONTROL COMMUNICATIONS SYSTEM (CC3) OF THE HONG KONG POLICE FORCE1.1 CC1The first generation command and control communi-cations center of the HKPF (CC1) was established
基金supported by the National Natural Science Foundation of China(Nos.22071043 and 22203027)Shanxi Province Science Foundation(No.202303021211194)the program for the(Reserved)Discipline Leaders of Taiyuan Institute of Technology.
文摘Exploring a new and robust material for proton conduction is of significant importance to the scientific interest and technological importance.Polyoxometalates(POMs)are a class of molecular anion metal oxide clusters with well-defined structures and diverse properties.Therefore,the design and synthesis of a POM-based material for proton conduction is extremely vital.Herein,a dimeric four tartaric acid-bridged tetra-Zr-incorporated arsenotungstate.
基金supported by the National Natural Science Foundation of Chinathe authors sincerely thank the National Natural Science Foundation of China(Nos.22271106 and 52073286)Science Foundation of State Key Laboratory of Structural Chemistry(No.20230027)。
文摘Recently,CsPbBr_(3)perovskite solar cells(PSCs)have garnered attention due to cost-effectiveness and reliability.However,hole transport limitations lead to charge recombination and lower power conversion efficiency(PCE).Defects in the CsPbBr_(3)layer,poor hole transport at the interface with carbon electrodes,and energy level differences hinder performance.Optimizing the perovskite layer using electrondonating organic molecules containing-NH_(2)groups enhances efficiency and stability by passivating defects and modulating lattice structure.In this work,tetra(4-aminophenyl)ethylene(TPE)and tetra(4-aminobiphenyl)ethylene(TPE-Ph)were employed to optimize the CsPbBr_(3)/carbon electrode interface.Their strong electron-donating properties and amino groups facilitate hole transfer and defect passivation,boosting PCE to 9.38%and enhancing stability.
