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| 1 | Reversible self-assembly of gold nanorods mediated by photoswitchable molecular adsorption显示文摘Stimuli-responsive self-assembly of nanoparticles represents a powerful strategy to achieve reconfigurable materials with novel functionalities and promising applications.In this regard,light-induced reversible self-assembly (LIRSA) of nanoparticles is most attractive but it is usually limited by the prerequisite yet cumbersome chemical functionalizations of the particle surface.Here we describe an innovative method to realize LIRSA of gold nanorods (GNRs) without surface functionalization through photoswitchable adsorption of an anionic azobenzene derivate AzoNa.The LIRSA of GNRs is caused by the reversible change between a nearly neutral state and a highly charged state of the GNRs arising from the photoswichable adsorption of AzoNa triggered by photoisomerization.The LIRSA behavior can be readily adjusted by changing the concentration of AzoNa and the aspect ratio of the GNRs.This new LIRSA strategy may provide a convenient and efficient route toward light-triggered reversibly reconfigurable nanomaterials. | Qian Wang Di Li Junyan Xiao Fucheng Guo Limin Qi | 2019 | Nano Research2019，12，7： | 2 |
| 2 | New Maikhanellid Shells and Siphogonuchitid Spicule Bundles from the Cambrian Fortunian Stage of South China显示文摘Maikhanellids are a distinct group of Cambrian Fortunian small shelly fossils by the capshaped profiles and scaly shell ornamentation.According to the individual shell shape and ornamentation feature types of 50 maikhanellids fossils which were collected from Xixiang botia,we confirmed the family Maikhanellidae content of six genera,which are Maikhanella,Ramenta,Purella,Ramentoides,Yunnannopleura and Mediata.Unlike the halkieriid animals whose shells and spicules are articulated on different body parts,maikhanellids were presumably yielded by siphogonuchitid spicules penetrating the intermediate matrix(the 'spicule shell' hypothesis),and this is the reason that some researchers treated maikhanellids and co-occurring siphogonuchitids as synonyms.The affinities of Maikhanellids and siphogonuchitids remain debatable.Here,we report three dimensionally phosphatized maikhanellid shells and siphogonuchitid spicule bundles from the Cambrian Fortunian small shell faunas of South China.They differ from all the previously reported maikhanellids and siphogonuchitids,and may represent new types.The intact and smooth surface underneath the partially preserved scales of the shells challenges the 'spicule-shell' hypothesis.The present siphogonuchitid spicules differ from the maikhanellid scales in size,morphology,and.arrangement pattern,thus the spicules might not be derived from the shells.Whether the shells and spicule bundles were articulated on different body parts of the same animals remains unknown. | LIU Yunhuan ZHANG Yanan SHAO Tiequan TANG Hanhua JIANG Kaituo WANG Qi CHEN Cheng DONG Junyan LIANG Yongchun DAI Jun XUE Jiaqi | 2016 | Acta Geologica Sinica(English Edition)2016，90，5： | 2 |
| 3 | Surfactant - assisted, shape - controlled synthesis of gold nanocrystals 显示文摘 | Junyan Xiao Limin Qi | 2011 | Nanoscale2011，，3： | 1 |
| 4 | Synthesis of MgO-doped ordered mesoporous carbons by Mg^(2+)-tannin coordination for efficient isomerization of glucose to fructose显示文摘In-situ MgO-doped ordered mesoporous carbon(OMC@MgO)was fabricated by formaldehyde-free self-assembly method,in which biomass-derived tannin was used as carbon precursor replacing fossil-based phenolics,Mg^(2+)as both cross-linker and precursor of catalytic sites.Up to~20 wt% MgO could be doped in the carbon skeleton with good dispersion retaining well-ordered mesoporous structures,while more MgO content(35 wt%)led to the failing in the formation of ordered mesoporous structure.The OMC@MgO possessed a high specific surface area(298.8 m^(2) g^(-1)),uniform pore size distribution(4.8 nm)and small crystallite size of MgO(1.73 nm)due to the confinement effect of ordered mesoporous structure.Using OMC@MgO as the heterogeneous catalyst,a maximum fructose yield of 32.4% with a selectivity up to 81.1%was achieved from glucose in water(90℃,60 min),which is much higher than that obtained using the MgO doped active carbon via conventional post-impregnation method(26.5%yield with 58.3% selectivity).Higher reaction temperature(>90℃)resulted in decrease of selectivity due to the formation of humins.The designed OMC@MgO displayed tolerant to high initial glucose concentrations(10 wt%)and could remain good recyclability without significant loss of activity for three cycles. | Junyan Fu Feng Shen Xiaoning Liu Xinhua Qi | 2023 | Green Energy & Environment2023，8，3： | 0 |
| 5 | Distinct durability of IgM/IgG antibody responses in COVID-19 patients with differing severity显示文摘Dear Editor,The coronavirus disease 2019(COVID-19)pandemic is generating a demand for simultaneous vaccine development,which is expected to prevent future outbreaks by eliciting sufficient and protective immunity. | Junyan Han Ning Zhang Danying Chen Yuhuan Gong Guoli Li Yaxian Kong Lin Pu Chen Chen Jingyuan Liu Qi Wang Ju Zhang Xuesen Zhao Juan Du Kai Han Chuan Song Linghang Wang Mingxi Hua Yu Hao Rui Song Yangzi Song Fengting Yu Siyuan Yang Haofeng Xiong Wei Zhang George F.Gao Fujie Zhang Ang Li Hui Zeng Yuhai Bi | 2022 | Science China(Life Sciences)2022，65，1： | 0 |
| 6 | Dock4 is required for the maintenance of cochlear hair cells and hearing function显示文摘Auditory hair cells(HCs)are the mechanosensory receptors of the cochlea,and HC loss or malfunction can result from genetic defects.Dock4,a member of the Dock180-related protein superfamily,is a guanine nucleotide exchange factor for Rac1,and previous reports have shown that Dock4 mutations are associated with autism spectrum disorder,myelodysplastic syndromes,and tumorigenesis.Here,we found that Dock4 is highly expressed in the cochlear HCs of mice.However,the role of Dock4 in the inner ear has not yet been investigated.Taking advantage of the piggyBac transposon system,Dock4 knockdown(KD)mice were established to explore the role of Dock4 in the cochlea.Compared to wild-type controls,Dock4 KD mice showed significant hearing impairment from postnatal day 60.Dock4 KD mice showed hair bundle deficits and increased oxidative stress,which eventually led to HC apoptosis,late-onset HC loss,and progressive hearing loss.Furthermore,molecular mechanism studies showed that Rac1/β-catenin signaling was significantly downregulated in Dock4 KD cochleae and that this was the cause for the disorganized stereocilia and increased oxidative stress in HCs.Overall,our work demonstrates that the Dock4/Rac1/β-catenin signaling pathway plays a critical role in the maintenance of auditory HCs and hearing function. | Guodong Hong Xiaolong Fu Jieyu Qi Buwei Shao Xuan Han Yuan Fang Shuang Liu Cheng Cheng Chengwen Zhu Junyan Gao Xia Gao Jie Chen Ming Xia Wei Xiong Renjie Chai | 2023 | Fundamental Research2023，3，4： | 0 |
| 7 | Comparative analysis of trade effects of anti-dumping measures targeting China vs.those initiated by China显示文摘Using the numbers of anti-dumping cases both in China and around the world, the value of imports and exports from 1995 to 2012, and the anti-dumping index (ADI) proposed by Finger and Murray in 1999, this paper analyzes the characteristics of anti-dumping measures that target China and those imposed by China, and constructs a multiple linear regression model. We try to show the effect of anti-dumping measures in either direction on the total value of China’s trade. This paper finds that both have great impact on export trade value. The intensity of the level of anti-dumping measures to which China is subject is positively correlated with total export value since this intensity, to a certain degree, can promote China’s industrial upgrading and the increase of the export of high value-added products. This paper further analyzes different effects of anti-dumping measures based on the method of technological content classification of Lall (2000). Finally, we put forward policy suggestions on how to enhance China’s export competitiveness by overcoming the effects of antidumping measures to which we are subject and by making proper use of antidumping measures on others. | Qi Junyan Sun Qian | 2015 | China Finance and Economic Review2015，4，3： | 0 |
| 8 | Effect of A1P master alloy on grain refinement of primary silicon in eutectic Al-Si alloys显示文摘To obtain the finer primary silicon crystals, the proprietary Al-P master alloy was adopted to modify the eutectic Al-Si alloys and the most suitable modification process was made in the experiments. The SEM (Scanning Electron Microscope) and DSC (Differential Scanning Calorimeter) analysis indicate that the Al-P modifier has more advantages over Cu-P and Fe-P modifier in easily addition, no elemental alteration and less undercooling of primary silicon's solidification, which suggests the Al-P master alloy is an effective modifier of eutectic Al-Si alloys. | SONG Xigui, BIAN Xiufang, QI Xiaogang, LIU Xiangfa, ZHANG Junyan, WANG Baopei, andZHU Limin | 2004 | Rare Metals2004，23，1： | 0 |
| 9 | Digital Economy Development,Institutional Quality and Upstreamness of Global Value Chains显示文摘By building a composite index for measuring national digital economy development and sectoral digital intensities,this paper derives metrics of industry-level digital economy penetration under the framework of specialization within global value chains(GVCs),systematically analyzes the mechanisms through which digital economy development affects GVCs upstreamness,and examines the moderating effect of institutional quality.The study shows that different dimensions of digital economy development significantly boost GVCs upstreamness,a conclusion that holds even after accounting for endogeneity through dynamic panel models with instrumental variables based on past data.Further research shows that technological innovation capabilities and resource allocation efficiency have gradually become important channels for digital economy development to boost GVCs upstreamness.Adding indicators on institutional quality reveals that greater institutional quality not only directly promotes GVCs upstreamness but also reinforces the impact of digital economy development on higher GVCs positioning. | QI Junyan REN Yida | 2022 | Frontiers of Economics in China-Selected Publications from Chinese Universities2022，17，1： | 0 |
| 10 | Xixiang Biota——Another Rare Scientific Window of the Cambrian Explosion显示文摘Objective The Xixiang biota is a specially preserved micro oryctocoenose discovered in the Lower Cambrian Kuanchuanpu member of Dengying Formation at Zhangjiagou section of Xixiang County in southern Shaanxi Province.The Kuanchuanpu member is a set of neritic carbonate sedimentary formation containing phosphorus and silicon.Its lithology is mainly | LIU Yunhuan WANG Qi SHAO Tiequan DONG Junyan TANG Hanhua ZHANG Yanan JIANG Kaituo HU Bo WANG Zhaojing PANG Guotao MA Yingying FAN Ziyang | 2016 | Acta Geologica Sinica(English Edition)2016，90，3： | 0 |
| 11 | Quantum Griffiths singularity in two-dimensional superconducting 4Ha-TaSe_(2) nanodevices显示文摘The layered transition metal dichalcogenides(TMDs)have raised considerable interest in the past decades for both fundamental physics and low-dimensional nanodevice applications.Recently,intriguing phenomena of Ising superconductivity and quantum metallic state have been reported in two-dimensional(2D)4Ha-TaSe2 nanodevices.Here,we report the magnetic field induced superconductor–metal transition(SMT)in mechanical exfoliated 4Ha-TaSe2 nanodevices with thickness down to 2.5 nm.We observe the quantum Griffiths singularity(QGS)of SMT in thin 4Ha-TaSe2 nanodevices by performing ultralow temperature transport measurements and activated scaling analysis.With increasing the thickness of TaSe2 nanodevice to 10.6 nm,the signature of magnetoresistance crossing region can hardly be detected,revealing the thickness dependence of SMT.In this procedure,the disorder strength plays a dominant role.This work enriches the platform for studying QGS and may stimulate further investigations on the correlation between different novel quantum phenomena in the same 2D superconducting system. | Ying Xing Yiyu Liu Pu Yang Jun Ge Longxin Pan Junyan Wang Shichao Qi Yi Liu Jian Wang | 2023 | Nano Research2023，16，10： | 0 |
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