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11篇 您的检索式:作者名="Youjun Zeng"
    题名 作者 年代 出处 被引量
1Effect of pyrophosphate on the light scatter in KDP crystal显示文摘Pyrophosphate doped potassium dihydrogen phosphate (KDP) crystal was grown from aqueous solution by the temperature lowering method. Light scatter in KDP crystal was detected with the ultramicroscopic method. The light scatter in KDP crystal was aggravated when pyro-phosphate was doped into the growth solution, which was distributed ununiformly in prism and pyramidal sectors of KDP crystal. Different effects of pyrophosphate on prism and pyramidal sectors of KDP crystal can explain this case. The transmission in this crystal was measured, showing that pyrophosphate affects the transmission evidently.Xun Sun Xinguang Xu Youjun Fu Shenglai Wang Hong Zeng Yiping Li Zhangshou Gao 2001Chinese Science Bulletin2001,46,5:3
2NONLINEAR MOTION MECHANICS MODEL OF CURVED BLOOD VESSEL显示文摘A geometric model of curved blood vessels is established based on some reason-able hypotheses;the nonlinear motion mechanics model of the curved blood vessel is establishedaccording to basic mechanics laws.This model includes much more physiological factors.It cou-ples the interaction of blood flow with mechanical factors such as the displacement,deformation,strain and stress etc.of the curved blood vessel.It is of great importance for investigating thecirculation rules of the cardiovascular system and the nonlinear pulse wave propagation in curvedblood vessels.Qiao Aike Liu Youjun Wu Shigui Xu Xiaohu Zeng Yanjun 2003Acta Mechanica Solida Sinica2003,16,1:3
3A Study of the Mixing of Cement and Emulsified Asphalt Mortar 显示文摘Xiaohui Zeng Youjun Xie Dehua Deng 2013Magazine of Concrete Research2013,65,21:1
4Improvement in Resolution of Multiphoton Scanning Structured Illumination Microscopy via Harmonics显示文摘We describe a multiphoton(mP)-structured illumination microscopy(SIM)technique,which demonstrates substantial improvement in image resolution compared with linear SIM due to the nonlinear response of fluorescence.This nonlinear response is caused by the effect of nonsinusoidal structured illumination created by scanning a sinusoidally modulated illumination to excite an mP fluorescence signal.The harmonics of the structured fluorescence illumination are utilised to improve resolution.We present an mP-SIM theory for reconstructing the super-resolution image of the system.Theoretically,the resolution of our m P-SIM is unlimited if all the high-order harmonics of the nonlinear response of fluorescence are considered.Experimentally,we demonstrate an 86 nm lateral resolution for two-photon(2P)-SIM and a 72 nm lateral resolution for second-harmonic-generation(SHG)-SIM.We further demonstrate their application by imaging cells stained with F-actin and collagen fibres in mouse-tail tendon.Our method can be directly used in commercial mP microscopes and requires no specific fluorophores or high-intensity laser.Lei Wang Xiaomin Zheng Jie Zhou Meiting Wang Jiajie Chen Youjun Zeng Gaixia Xu Ying Wang Haixia Qiu Yonghong Shao Junle Qu Bruce Zhi Gao Ying Gu 2022Engineering2022,,9:1
5Conductivi- ty behavior of the fresh CA mortar and its relationship with the fluidity properties 显示文摘ZENG Xiaohui XIE Youjun DENG Dehua 2012Construction and Build- ing Materials2012,36,3:1
6Conductivity behavior of the fresh CA mortar and its relationship with the fluidity properties显示文摘ZENG Xiaohui XIE Youjun DENG Dehua 2012Construction and Building Materials2012,36,:1
7Conductivity behavior of the fresh CA mortar and its relationship with the fluidity properties显示文摘Zeng Xiaohui Xie Youjun Deng Dehua 2012Construction and Building Materials2012,36,3:1
8Effects of impurities on growth habit of KDP crystal显示文摘The effects of metaphosphate, boric acid and quaternary ammonium cations with different concentration on the growth habit of KDP crystal are reported. The results are analyzed and discussed, which show that the effects of different impurities on the growth habit of KDP are not the same. It is due to the different adsorption mechanism of the impurities.Sun Xun Fu Youjun Gao Zhangshou Wang Shenglai Zeng Hong Li Yiping 2001Chinese Science Bulletin2001,46,13:0
9Passively and actively enhanced surface plasmon resonance sensing strategies towards single molecular detection显示文摘Surface plasmonic resonance(SPR)has been a corner stone for approaching single molecular detection due to its highsensitivity capability and simple detection mechanism,and has brought major advancements in biomedicine and life science technology.Over decades,the successful integration of SPR with versatile techniques has been demonstrated.However,several crucial limitations have hindered this technique for practical applications,such as long detection time and low overall sensitivity.This review aims to provide a comprehensive summary of existing approaches in enhancing the performance of SPR sensors based on“passive”and“active”methods.Firstly,passive enhancement is discussed from a material aspect,including signal amplification tags and modifications of conventional substrates.Then,the focus is on the most popular active enhancement methods including electrokinetic,optical,magnetic,and acoustic manipulations that are summarized with highlights on their advantageous features and ability to concentrate target molecules at the detection sites.Lastly,prospects and future development directions for developing SPR sensing towards a more practical,single molecular detection technique in the next generation are discussed.This review hopes to inspire researchers’interests in developing SPR-related technology with more innovative and influential ideas.Boliang Jia Jiajie Chen Jie Zhou Youjun Zeng Ho-Pui Ho Yonghong Shao 2022Nano Research2022,15,9:0
10A novel chromogenic and fluorogenic scaffold for detection of oxidative radicals显示文摘Radical detection has attracted significant attention recently. Here we have developed a scaffold through covalent assembly principle(OR570), which could facile applications in detection of oxidative radicals.The primary advantage of the assembly type probe lies at the turn-on fluorescence signal from a zero background and hence high fluorescence turn-on ratio for sensitive detection of weak signal.Zuhai Lei Zhenhua Zeng Xuhong Qian Youjun Yang 2017Chinese Chemical Letters2017,28,10:0
11Alternative splicing of a carboxyl/choline esterase gene enhances the fenpropathrin tolerance of Tetranychus cinnabarinus显示文摘Detoxification plays a crucial role in agricultural pests to withstand pesticides,and cytochrome P450s,carboxyl/choline esterases(CCEs),and glutathione-S-transferases are the main proteins responsible for their detoxification ability.The activity of CCEs can be upregulated,downregulated,or modified by mutation.However,few studies have examined the role of alternative splicing in altering the properties of CCEs.We identified 2 variants of TcCCE23 in Tetranychus cinnabarinus:a long version(CCE23-V1)and a short version that is 18 nucleotides shorter than CCE23-V1(CCE23-V2).Whether splicing affects the activity of TcCCE23 remains unclear.Overexpression of CCE23-V2 in fenpropathrin-resistant T.cinnabarinus revealed that splicing affected the detoxification of fenpropathrin by CCE23-V2.The mortality of mites was significantly higher when the expression of CCE23-V2 was knocked down(43.2%±3.3%)via injection of CCE23-dsRNA(double-stranded RNA)compared with the control group injected with green fluorescent protein-dsRNA under fenpropathrin exposure;however,the downregulation of CCE23-V1(61.3%±6.3%)by CCE23-small interfering RNA had no such effect,indicating CCE23-V2 plays a greater role in xenobiotic metabolism than CCE23-V1.The tolerance of flies overexpressing CCE23-V2 to fenpropathrin(50%lethal dose[LD_(50)]=19.47μg/g)was significantly higher than that of Gal4/UAS-CCE23-V1 transgenic flies(LD_(50)=13.11μg/g).Molecular docking analysis showed that splicing opened a“gate”that enlarges the substrate binding cavity of CCE23-V2,might enhance the ability of CCE23-V2 to harbor fenpropathrin molecules.These findings suggest that splicing might enhance the detoxifying capability of TcCCE23.Generally,our data improve the understanding of the diversity and complexity of the mechanisms underlying the regulation of CCEs.Peng Wei Xinying Zeng Haonan Han Yiqing Yang Youjun Zhang Lin He 2023Insect Science2023,30,5:0
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