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Now showing items 33 - 48 of 139

Ionic Liquids Tailored and Confined by One-Step Assembly with Mesoporous Silica for Boosting Catalytic Conversion of CO2 into Cyclic Carbonates

Su, Qian Qi, Yaqiong Yao, Xiaoqian Cheng, Weiguo Dong, Li Chen, Songsong Zhang, Suojiang

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Boron-doped melamine-derived carbon nitrides tailored by ionic liquids for catalytic conversion of CO\r <sub/>2sub>\r into cyclic carbonates

Su, Qian Yao, Xiaoqian Cheng, Weiguo Zhang, Suojiang

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[American Society of Civil Engineers 14th COTA International Conference of Transportation Professionals - Changsha, China (July 4-7, 2014)] CICTP 2014 - A Kinematic Approach for Seismic Stability Analysis of Cantilever Retaining Wall

Su, Qian Zhang, Xiaoxi

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Probability analysis of Shanghai shallow layer subsidence : Su, H Y; Lin, G M; Qian, J H Proc 4th International Conference on Land Subsidence, Houston, 12–17 May 1991P585–592. Publ Wallingford: IAHS Press, 1991

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[American Society of Civil Engineers Third International Conference on Transportation Engineering (ICTE) - Chengdu, China (July 23-25, 2011)] ICTE 2011 - Load Sharing and Its Time Effect on Piled Raft Foundations under High Embankment

Su, Qian Cheng, Mayao Wang, Bin Bai, Hao

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Microbridge testing of silicon oxide/silicon nitride bilayer films deposited on silicon wafers, by Y.-J. Su, C.-F. Qian, M.-H. Zhao and T.-Y. Zhang, originally published in Acta Materialia, Volume 48(20), pp. 4901–4915, 2000

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[IEEE 2009 WRI International Conference on Communications and Mobile Computing (CMC) - Kunming, Yunnan, China (2009.01.6-2009.01.8)] 2009 WRI International Conference on Communications and Mobile Computing - A Peer-to-Peer Resources Search Algorithm Based on Small-World Model

Su, Qian Zhang, Xuejie

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[IEEE 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) - Pisa, Italy (2015.5.11-2015.5.14)] 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings - Ultrasound attenuation characteristics in oil-water two-phase flow

Su, Qian Tan, Chao Dong, Feng

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Microstructural Evolution and Mechanical Properties in Superlight Mg-Li Alloy Processed by High-Pressure Torsion

Su, Qian Xu, Jie Li, Yugiao Yoon, Jae Ik Shan, Debin Guo, Bin Kim, Hyoung Seop

Microstructural evolution and mechanical properties of LZ91 Mg-Li alloy processed by high-pressure torsion (HPT) at an ambient temperature were researched in this paper. The microstructure analysis demonstrated that significant grain refinement was achieved after HPT processing with an average grain size reducing from 30 mu m (the as-received condition) to approximately 230 nm through 10 turns. X-ray diffraction analysis revealed LZ91 alloy was consisted of ff phase (hexagonal close-packed structure, hcp) and beta phase (body-centered cubic structure, bcc) before and after HPT processing. The mean value of microhardness increased with the increasing number of HPT turns. This significantly increased hardness of specimens can be explained by Hall-Petch strengthening. Simultaneously, the distribution of microhardness along the specimens was different from other materials after HPT processing due to the different mechanical properties of two different phases. The mechanical properties of LZ91 alloy processed by HPT were assessed by the micro-tensile testing at 298, 373, 423, and 473 K. The results demonstrate that the ultra-fine grain LZ91 Mg-Li alloy exhibits excellent mechanical properties: tensile elongation is approximately 400% at 473 K with an initial strain rate of 1 x 10(-2) s(-1).

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Carbon dots derived from pea for specifically binding with Cryptococcus neoformans

Su, Qian Lu, Chunsong Liu, Jie Yang, Xiaoming

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Prediction of tire-pavement noise of porous asphalt mixture based on mixture surface texture level and distributions

Chen, De Ling, Cheng Wang, Tingting Su, Qian Ye, Anjun

An accurate tire-pavement noise prediction model is highly needed by transportation agencies and pavement designers during the porous asphalt mixture design to reduce the tire-pavement noise which has been recognized as a dominant contributor to the overall traffic noise. In this paper, the surface texture level and distributions of porous asphalt mixture are acquired by a recently developed program named as 2-Dimensional Image Texture Analysis Method (2D-ITAM). The acoustic absorption coefficient of porous asphalt mixture is calculated using a proposed sound absorption model based on the micro-structure of porous asphalt mixture. Also, a prediction model correlating the tire-pavement noise level with macro texture and short wavelength of mega-texture of pavement is established using a multivariate non-linear regression analysis. This prediction model is validated through laboratory experiment demonstrating its effectiveness of predicting the tire-pavement noise level. The model is anticipated to serve as an improved tool which could be considered by practitioners in an optimized porous asphalt mixture design incorporating the evaluation of noise produced by asphalt pavement. (C) 2018 Elsevier Ltd. All rights reserved.

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Ionic liquids tailored and confined by one-step assembly with mesoporous silica for boosting the catalytic conversion of CO2 into cyclic carbonates

Su, Qian Qi, Yaqiong Yao, Xiaoqian Cheng, Weiguo Dong, Li Chen, Songsong Zhang, Suojiang

On the basis of economic and energy-saving criteria, the minimum effective dose of ionic liquids (ILs) for the catalytic conversion of CO2 into cyclic carbonates was first explored by confinement. With one-step assembly of mesoporous silica (mSiO(2)) by using a fixed amount of silicon source with varying amounts of ILs as templates, certain amounts of 1-ethyl-3-methyl imidazolium bromides (EmimBr) were tailored and confined in mSiO(2). The confined ILs (EmimBr@mSiO(2)) retained the advantages of homo- and heterogeneous catalysts, exhibiting higher performance than bulk EmimBr under identical reaction conditions. Amongst all the prepared materials, EmimBr@mSiO(2) with the lowest amount of EmimBr (6.9 wt%) exhibited the biggest improvement in catalytic activity, achieving a TOF of 112.6 h(-1) which is almost 1.7 times the bulk phase with good recyclability. The boosted catalytic activity could be attributed to the larger proportion of mesopores, the better dispersity of EmimBr (Si/Br =3D 25) and the synergistic effect from more exposed silanol groups (Si-OH/Br =3D 8) in the structure. The good recyclability was then explained by the XPS analysis and density functional theory (DFT) calculation, which confirmed that the compressing effect from Si-OH could enhance the cation and anion interaction to stabilize ILs in the space more firmly when less ILs were confined.

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Ultra-long room-temperature phosphorescent carbon dots: pH sensing and dual-channel detection of tetracyclines

Lu, Chunsong Su, Qian Yang, Xiaoming

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Hippocampal Protein Kinase C Gamma Signaling Mediates the Impairment of Spatial Learning and Memory in Prenatally Stressed Offspring Rats

Su, Qian Zhang, Huiping Dang, Shaokang Yao, Dan Shao, Shuya Zhu, Zhongliang Li, Hui

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Polymeric ionic liquids tailored by different chain groups for the efficient conversion of CO <sub/>2sub> into cyclic carbonates

Ying, Ting Tan, Xin Su, Qian Cheng, Weiguo Dong, Li Zhang, Suojiang

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Facile preparation of CoS2 nanoparticles embedded into polyaniline with tunable electromagnetic wave absorption performance

Ji, Ying Mu, Congpu Wang, Bochong Su, Qian Xiang, Jianyong Nie, Anmin Cheng, Dachuan Liu, Pengliang Wen, Fusheng

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Ionic Liquids Tailored and Confined by One-Step Assembly with Mesoporous Silica for Boosting Catalytic Conversion of CO2 into Cyclic Carbonates

Boron-doped melamine-derived carbon nitrides tailored by ionic liquids for catalytic conversion of CO\r <sub/>2sub>\r into cyclic carbonates

[American Society of Civil Engineers 14th COTA International Conference of Transportation Professionals - Changsha, China (July 4-7, 2014)] CICTP 2014 - A Kinematic Approach for Seismic Stability Analysis of Cantilever Retaining Wall

Probability analysis of Shanghai shallow layer subsidence : Su, H Y; Lin, G M; Qian, J H Proc 4th International Conference on Land Subsidence, Houston, 12–17 May 1991P585–592. Publ Wallingford: IAHS Press, 1991

[American Society of Civil Engineers Third International Conference on Transportation Engineering (ICTE) - Chengdu, China (July 23-25, 2011)] ICTE 2011 - Load Sharing and Its Time Effect on Piled Raft Foundations under High Embankment

Microbridge testing of silicon oxide/silicon nitride bilayer films deposited on silicon wafers, by Y.-J. Su, C.-F. Qian, M.-H. Zhao and T.-Y. Zhang, originally published in Acta Materialia, Volume 48(20), pp. 4901–4915, 2000

[IEEE 2009 WRI International Conference on Communications and Mobile Computing (CMC) - Kunming, Yunnan, China (2009.01.6-2009.01.8)] 2009 WRI International Conference on Communications and Mobile Computing - A Peer-to-Peer Resources Search Algorithm Based on Small-World Model

[IEEE 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) - Pisa, Italy (2015.5.11-2015.5.14)] 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings - Ultrasound attenuation characteristics in oil-water two-phase flow

Microstructural Evolution and Mechanical Properties in Superlight Mg-Li Alloy Processed by High-Pressure Torsion

Carbon dots derived from pea for specifically binding with Cryptococcus neoformans

Prediction of tire-pavement noise of porous asphalt mixture based on mixture surface texture level and distributions

Ionic liquids tailored and confined by one-step assembly with mesoporous silica for boosting the catalytic conversion of CO2 into cyclic carbonates

Ultra-long room-temperature phosphorescent carbon dots: pH sensing and dual-channel detection of tetracyclines

Hippocampal Protein Kinase C Gamma Signaling Mediates the Impairment of Spatial Learning and Memory in Prenatally Stressed Offspring Rats

Polymeric ionic liquids tailored by different chain groups for the efficient conversion of CO <sub/>2sub> into cyclic carbonates

Facile preparation of CoS2 nanoparticles embedded into polyaniline with tunable electromagnetic wave absorption performance

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