http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ye, Hao,Kim, Dae Hyeon,Chen, Xiankai,Sandanayaka, Atula S. D.,Kim, Jong Uk,Zaborova, Elena,Canard, Gabriel,Tsuchiya, Youichi,Choi, Eun Young,Wu, Jeong Weon,Fages, Fré,dé,ric,Bredas, Jean-L American Chemical Society 2018 Chemistry of materials Vol.30 No.19
<P>Near-infrared (NIR) organic light-emitting devices have aroused increasing interest because of their potential applications such as information-secured displays, photodynamic therapy, and optical telecommunication. While thermally activated delayed fluorescent (TADF) emitters have been used in a variety of high-performance organic light-emitting diodes (OLEDs) emitting in the visible spectral range, efficient NIR TADF materials have been rarely reported. Herein, we designed and synthesized a novel solution-processable NIR TADF dimeric borondifluoride curcuminoid derivative with remarkable photophysical, electroluminescence and amplified spontaneous emission properties. This dye was specifically developed to shift the emission of borondifluoride curcuminoid moiety toward longer wavelengths in the NIR region while keeping a high photoluminescence quantum yield. The most efficient OLED fabricated in this study exhibits a maximum external quantum efficiency of 5.1% for a maximum emission wavelength of 758 nm, which ranks among the highest performance for NIR electroluminescence. In addition, this NIR TADF emitter in doped thin films displays amplified spontaneous emission above 800 nm with a threshold as low as 7.5 μJ/cm<SUP>2</SUP>, providing evidence that this material is suitable for the realization of high-performance NIR organic semiconductor lasers.</P> [FIG OMISSION]</BR>
Pengfei Li,Jianzhong Zhou,Yadong Gong,Xiankai Meng,Jinzhong Lu 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.7
The microstructure, hardness, and fracture strength of Inconel 718 fabricated with laser metal deposition are investigated. The solution treatment plus aging (STA) (including 980 °C, 720 °C, and 620 °C for 1, 8, and 8 h, respectively) and low-temperature stress-relief annealing (LTSLA) (including 650 °C for 1 h) are compared, which can respectively improve the hardness and tensile properties. Results show that the as-deposited sample mainly contained γ matrix, coarse Laves phase, granular carbides, and nitrides. STA and LTSLA post-heat treatments could respectively improve the hardness and tensile properties, while the elongation slightly decreased. The solution treatment promoted almost Laves phase to dissolve into γ matrix and homogenized the matrix, and the aging treatment promoted the precipitation of γ′ and γ′′ phases, which significantly improved the mechanical properties.
Proteomic Analysis of Shigella Virulence Effectors Secreted under Different Conditions
( Xingming Liu ),( Lilan Lu ),( Xinrui Liu ),( Xiankai Liu ),( Chao Pan ),( Erling Feng ),( Dongshu Wang ),( Chang Niu ),( Li Zhu ),( Hengliang Wang ) 한국미생물 · 생명공학회 2017 Journal of microbiology and biotechnology Vol.27 No.1
A series of novel effector molecules secreted by the type three secretion system (T3SS) of Shigella spp. have been reported in recent years. In this study, a proteomic approach was applied to study T3SS effectors systematically. First, proteins secreted by the S. flexneri wildtype strain after Congo Red induction were separated and identified using two-dimensional electrophoresis to display the relative abundance of all kinds of early effectors for the first time. Then, a gene deletion mutant of known virulence repressor (OspD1) and a gene overexpressed mutant of two known virulence activators (MxiE and IpgC) were constructed and analyzed to discover potential late effectors. Furthermore, the supernatant proteins of gene deletion mutants of two known translocators (IpaB and IpaD), which would constantly secrete effectors, were also analyzed. Among all of the secreted proteins identified in our study, IpaH1.4, IpaH_5, and IpaH_7 have not been reported before. These proteomics data of the secreted effectors will be valuable to understand the pathogenesis of S. flexneri.
A Novel Hybrid Suspension Electromagnet for Middle-low Speed Maglev Train
Han Weitao,Sun Jinji,Liu Xiankai,Guo Haixia,Wang Jinsha 한국자기학회 2017 Journal of Magnetics Vol.22 No.3
This paper proposes a novel hybrid suspension electromagnet for application in the middle-low speed maglev train. Its configuration and working principle are introduced. Mathematical models of the suspension force and guidance force are established accurately by equivalent magnetic circuit method (EMCM), from which the relationships of suspension force-control current-suspension gap and guidance force-guidance displacement are derived. Finite element method (FEM) is also applied to analyze the performances and characteristics of the novel hybrid suspension electromagnet. The analysis results are in good agreement with those calculated by EMCM, which is helpful in designing and optimizing the suspension system. The comparisons are made between the performances of the novel and the traditional electromagnets. The contrast results indicate that the proposed hybrid suspension electromagnet possesses better performances compared to the traditional structure, especially the little control current and the low suspension power loss.