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55篇 您的检索式:作者名="Yu Simin"
    题名 作者 年代 出处 被引量
1Effects of characteristic inhomogeneity of bamboo culm nodes on mechanical properties of bamboo fiber reinforced composite显示文摘Dendrocalamus farinosus and Phyllostachys heterocycla bamboo logs were subjected to a novel treatment process for the preparation of bamboo fiber mats(BFMs), and the obtained BFM were used to fabricate bamboo fiber reinforced composite(BFRC). We studied the mechanical properties of the BFRCs manufactured from the mats with and without bamboo nodes. The presence of nodes in BFM greatly reduced tensile strength,compressive strength, modulus of elasticity, and modulus of rupture of the BFRCs, while the BFRCs fabricated from BFMs with nodes possessed higher horizontal shear strength. Therefore, the nodes in bamboo culms were an important factor in the uniform distribution of mechanical properties, and BFMs should be homogeneously arranged to reduce the impact of nodes on the mechanical strengths of BFRCs.Jinqiu Qi Jiulong Xie Wenji Yu Simin Chen 2015Journal of Forestry Research2015,26,4:3
2Genome-wide identification and characterization of the lateral organ boundaries domain gene family in Brassica rapa var.rapa显示文摘The Lateral Organ Boundaries Domain(LBD)genes encode highly conserved plant-specific LOB domain proteins which regulate growth and development in various species.However,members of the LBD gene family have yet to be identified in Brassica rapa var.rapa.In the present study,fifty-nine LBD genes were identified and distributed on 10 chromosomes.The BrrLBD proteins are predicted to encode hydrophobic polypeptides between 118 and 394 amino acids in length and with molecular weights ranging from 13.31 to 44.24 kDa;the theoretical pi for these proteins varies from 4.83 to 9.68.There were 17 paralogous gene pairs in the BrrLBD family,suggesting that the amplification of the BrrLBD gene family involved largescale gene duplication events.Members of the BrrLBD family were divided into 7 subclades(class I a to e,class II a and b).Analysis of gene structure and conserved domains revealed that most BrrLBD genes of the same subclade had similar gene structures and protein motifs.The expression profiles of 59 BrrLBD genes were determined through Quantitative Real-time fluorescent PCR(qRT-PCR).Most BrrLBD genes in the same subclade had similar gene expression profiles.However,the expression patterns of 7 genes differed from their duplicates,indicating that although the gene function of most BrrLBD genes has been conserved,some BrrLBD genes may have undergone evolutionary change.Qin Yu Simin Hu Jiancan Du Yongping Yang Xudong Sun 2020Plant Diversity2020,42,1:3
3Clinical manifestations and pathogen characteristics in children admitted for suspected COVID-19显示文摘Coronavirus disease 2019(COVID-19),which is caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2),has spread around the world.However,approaches to distinguish COVID-19 from pneumonia caused by other pathogens have not yet been reported.We retrospectively analyzed the clinical data of 97 children with probable COVID-19.A total of 13(13.4%)patients were confirmed positive for SARS-CoV-2 infection by nucleic acid RT-PCR testing,and 41(42.3%)patients were found to be infected with other pathogens.Notably,no pathogen was detected in 43(44.3%)patients.Among all patients,25(25.8%)had familial cluster exposure history,and 52(53.6%)had one or more coexisting conditions.Fifteen(15.5%)patients were admitted or transferred to the PICU.In the 11 confirmed COVID-19 cases,5(45.5%)and 7(63.6%)were positive for IgM and IgG against SARS-CoV-2,respectively.In 22 patients with suspected COVID-19,1(4.5%)was positive for IgG but negative for IgM.The most frequently detected pathogen was Mycoplasma pneumonia(29,29.9%).One patient with confirmed COVID-19 died.Our results strongly indicated that the detection of asymptomatic COVID-19 or coexisting conditions must be strengthened in pediatric patients.These cases may be difficult to diagnose as COVID-19 unless etiologic analysis is conducted.A serologic test can be a useful adjunctive diagnostic tool in cases where SARS-CoV-2 infection is highly suspected but the nucleic acid test is negative.Xiaofang Cai Hanlan Jiang Simin Zhang Shengying Xia Wenhui Du Yaoling Ma Tao Yu Wenbin Li 2020Frontiers of Medicine2020,14,6:2
4显示文摘Cai Rui Jiang Simin Yu Xing 2012J MaterChem2012,22,16:1
5Construction of Photoresponsive 3D Structures Based on Triphenylethylene Photochromic Building Blocks显示文摘Photoresponsive materials have been widely used in sensing,bioimaging,molecular switches,information storage,and encryption nowadays.Although a large amount of photoresponsive materials have been reported,the construction of these smart materials into precisely prescribed complex 3D geometries is rarely studied.Here we designed a novel photoresponsive material methyl methacrylate containing triphenylethylene(TrPEF_(2)-MA)that can be directly used for digital light processing(DLP)3D printing.Based on TrPEF_(2)-MA,a series of photoresponsive 3D structures with reversible color switching under ultraviolet/visible light irradiations were fabricated.These complex photoresponsive 3D structures show high resolutions(50μm),excellent repeatability(25 cycles without fatigue),and tunable saturate color degrees.Multicomponent DLP 3D printing processes were also carried out to demonstrate their great properties in information hiding and information-carrying properties.This design strategy for constructing photoresponsive 3D structures is attractive in the area of adaptive camouflage,information hiding,information storage,and flexible electronics.Xiayu Zhang Fukang Liu Beibei Du Rongjuan Huang Simin Zhang Yunfei He Hailan Wang Jingjing Cui Biao Zhang Tao Yu Wei Huang 2022Research2022,,4:1
6Generation of n×m-Scroll Attractorsundera Chua-circuit Framework显示文摘Yu Simin Wallace K S 2007International Journal of Bifurcation and Chaos2007,17,11:1
7Dynamics analysis and synchronization of a new chaotic attractor显示文摘Deng Kuibiao Li Jing Yu Simin 2014Optik2014,125,13:1
8Generating hyperchaotic Lü attractor via state feedback control显示文摘CHEN Aimin LU Junan Lü Jinhu YU Simin 2006Physica A2006,364,:1
9The Synthesis of Sub-Nano-Thick Pd Nanobelt-Based Materials for Enhanced Hydrogen Evolution Reaction Activity显示文摘Tailoring atomic structures of noblemetal nanomaterials with size close to single-unit cell range is essential in both fundamental researchand applications,including their development into high catalytic performance materials in renewable,green energy conversions,devices for energy storage,and as biosensors for environmental pollutants.However,several strategies used in fabricating these materials still impose enormous challenges,arising from lack of even size distribution,shape uniformity,and controlled composition,which are critical in determining their specific activities and efficiencies.Herein,we report a facile approach for preparing sub-nano-thick palladium nanobelt-based(PdNB)materials.Then we rationalized the formation mechanism of such highly anisotropic structures by morphology-related thermodynamic and kinetic analysis.Moreover,we investigated if electrocatalysis performance of these NB-basedmaterialswere enhanced.Thepalladium(Pd)NBs featured a thickness of∼0.9-1.2 nm and width of 5-18nmwith length extending to severalmicrometers[denoted as Pd(0.9)],or a thickness of∼0.7-0.9 nm and width of 2.5-6 nmwith length of several hundreds of nanometers[denoted as Pd(0.7)].According to our theoretical analysis,one-dimensional(1D)growth encountered almost no energy barrier at optimal reaction conditions,whereas the growth of Pd nanostructures with other dimensions confronted high barriers,indicating that it was plausible to prepare 1D structures with sizes close to single-unit cells.Also,platinum(Pt)could be successfully doped into the Pd(0.9)NBs through a galvanic epitaxial growth,forming edge-Pt-enriched Pd NBs(eePtPd NBs).Further,electron transfer from Pd to Pt imparted the eePtPd NBs with high hydrogen evolution reaction(HER)activity.The eePtPd NBs showed a 3.5 and 1.8 times higher in exchange current density and mass activity(at−0.1 V),respectively,compared to those of Pt catalysts in perchloric acid(HClO_(4))solutions.Finally,the NBs all showed high activity toward ethanol and formic acid oxidation reactions.Our current work aids in gaining insights into tailoring Pd nanostructures at an atomic level and provides Pd sub-nanometric 1D structures for further research.Moreover,our morphology-related thermodynamic and kinetic analysis extend our understanding of the control of nanostructure morphology and might shed light on the precision of designing specific morphologies of noble metal nanocrystal structures.Bing Ni Qinghua Zhang Chen Ouyang Simin Zhang Biao Yu Jing Zhuang Lin Gu Xun Wang 2020CCS Chemistry2020,2,1:1
10A modulebased and unified approach to chaotic circuit design and its applications显示文摘YU Simin Lü Jinhu CHEN Guanrong 2007International Journal of Bifurcation and Chaos2007,17,5:1
11Design and implementation of n-scroll chaotic attractors from a general jerk circuit 显示文摘Simin Yu Jinhu Lu Leung H Guanrong Chen 2005Circuits and Systems 1 (S1549-8328)2005,52,7:1
12A continuous simulation of Holocene effective moisture change represented by variability of virtual lake level in East and Central Asia显示文摘The fluctuation of a single lake level is a comprehensive reflection of water balance within the basin, while the regional consistent fluctuations of lake level can indicate the change of regional effective moisture. Previous researches were mainly focused on reconstructing effective moisture by multiproxy analyses of lake sediments. We carried out a series of experiments, including a transient climate evolution model, a lake energy balance model and a lake water balance model to simulate continuous Holocene effective moisture change represented by variability of virtual lake level in East and Central Asia.The virtual lake level, area, water depth and salinity are not equivalent to actual values, but we estimated relative changes of the regional effective moisture. We also explored the driving mechanisms of effective moisture change in different geographical regions. Our results indicated that gradually falling effective moisture during the Holocene in northern China was due to the combined effects of high lake evaporation caused by longwave and shortwave radiation, and low precipitation caused by reductions of summer solar insolation. A decline in effective moisture through the Holocene in the Tibetan Plateau and southern Central Asia resulted from decreased precipitation because of the weakening of the Asian summer monsoon. Increased precipitation induced by the strengthening of the westerly circulation contributed to the effective moisture rise during the Holocene in northern Central Asia.Yu LI Yuxin ZHANG Xinzhong ZHANG Wangting YE Lingmei XU Qin HAN Yichan LI Hebin LIU Simin PENG 2020Science China Earth Sciences2020,63,8:1
13Design and implementation of n-scroll chaotic attractors from a general jerk circuit显示文摘Yu Simin Lu Jinhu H Leung 2005Circuits and Systems I:Regular Papers IEEE Transactions on2005,52,7:1
14A novel method to enhance rate performance of an Al-doped LiaTisOI2 electrode by post-synthesis treatment in liquid formaldehyde at room temperature显示文摘Rui Cai Simin Jiang Xing Yu 2012Chem Mater2012,22,9:1
15Hyperchaotic Sig- nal Generation via DSP for Efficient Perturbations to Liquid Mix- ing显示文摘ZHANG Zhong CHEN Guanrong YU Simin 2009International Journal of Circuit Theory and Applications2009,37,1:1
16Generating hyper-chaotic Lti attractor via state feedback control显示文摘Aimin Chen Jun -an Lu Jinhu Lu Simin Yu 2006Physical A2006,36,4:1
17A systematic methodology for constructing hyperchaotic systems with multiple positive Lyapunov exponents and circuit implementation显示文摘SHEN Chaowen YU Simin L~ Jinhu 2014IEEE Transactions on Circuits and Systems-I: Regular Papers2014,61,3:1
18Designing hyperchaotic systems with any desired number of positive Lyapunov exponents via a simple model显示文摘SHEN Chaowen YU Simin LU Jinhu 2014IEEE Transactions on Circuits and Systems-I: Regular Papers2014,61,8:1
19Constructing hyperchaotic systems at will显示文摘SHEN Chaowen YU Simin LU Jinhu 2015International Journal of Circuit Theory and Applications2015,43,12:1
20Design and ARM-embedded implementation of a chaotic map-based multicast scheme for multiuser speech wireless communication显示文摘GAN Qiuye YU Simin LI Chengqing 2015Submitted to IEEE Transactions on Circuits and Systems for Video Technology2015,,:1
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