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| 1 | Anticorrosion Performance of Epoxy Coatings Containing Small Amount of Inherently Conducting PEDOT/PSS on Hull Steel in Seawater显示文摘Corrosion protection of the hull steel by the conventional epoxy paint containing a small amount of commercial poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate)(PEDOT/PSS),which is one of the most popular and successful inherently conducting polymers as the corrosion inhibitor was studied.The corrosion behavior of the samples was investigated in seawater by electrochemical impedance spectroscopy and open circuit potential.Scanning electron microscopy was used to observe the surface morphology of the samples after corrosion.It was found that adding a small amount of PEDOT/PSS to the epoxy resin can significantly improve its corrosion protection. | Jian Hou Guang Zhu Jingkun Xu Huajian Liu | 2013 | Journal of Materials Science & Technology2013，29，7： | 9 |
| 2 | Copper-Catalysed Decarboxylative Trifluoromethylation of β-Ketoacids显示文摘 | Xiaolan Xu Huanhuan Chen Jianbo He Huajian Xu | 2017 | Chinese Journal of Chemistry2017，35，11： | 5 |
| 3 | A new method to constrain shallow crustal S-wave velocities based on direct P-wave amplitudes in receiver functions and its application in northeastern Tibet显示文摘A new method is developed to constrain S-wave velocity structures of the shallow crust based on frequencydependent amplitudes of direct P-waves in P-wave receiver functions(P-RFs). This method involves the following two steps:first, the high-frequency approximate amplitude formula of direct P-waves in P-RFs of individual stations is used to fit the observed amplitude distribution against the ray parameters at different frequencies, and second, the S-wave velocity depth profile beneath each station is constrained according to an empirical correlation between frequency and depth. Unlike traditional inversion techniques, the newly developed method is not dependent on initial velocity models, and the lateral and vertical resolutions of the results are controlled by the interstation distance and the data frequency, respectively. The effectiveness of the method is verified by synthetic tests on various models. The method is then applied to teleseismic P-RF data from a NW-SEtrending linear seismic array extending from the northeastern Tibetan Plateau to the central Sichuan Basin to construct an S-wave velocity image of the shallow crust along the array. The imaged velocity structure is further analysed and compared with the regional geology. In particular, the structural differences of sedimentary basins in the cratonic area of the stable Sichuan Basin and tectonically active belts in northeastern Tibet are investigated. By combining our results with previous observations, the relationship between the surficial geology and deep processes in the study region is also discussed. | Xu WANG Ling CHEN Yuan LING Yifan GAO Jianyong ZHANG Huajian YAO | 2019 | Science China Earth Sciences2019，62，11： | 3 |
| 4 | Molecular modulating of cobalt phthalocyanines on aminofunctionalized carbon nanotubes for enhanced electrocatalytic CO_(2)conversion显示文摘Metal porphyrins and metal phthalocyanines(Pc)constitute a promising class of metal molecular catalysts(MMCs)for efficient CO_(2)-to-CO electrocatalytic conversion due to their well-defined molecular structures.How to adjust the local coordination and electronic environment of the metal center and enhance the molecular-level dispersion of the active components remains as great challenges for further improving the performance.Herein,a cobalt(II)Pc(CoPc)-COOH/carbon nanotube(CNT)-NH_(2)hybrid catalyst was rationally designed by clicking the CoPc-COOH molecules onto the surface of CNT-NH_(2)through amidation reaction.This novel hybrid catalyst exhibited the enhanced current density of 22.4 mA/cm2 and CO selectivity of 91%at−0.88 V vs.reversible hydrogen electrode(RHE)in the CO_(2)electroreduction,as compared with CoPc-COOH/CNT and CoPc/CNT samples.The superior activity was ascribed to the charge transfer induced by introduction of-COOH and-NH_(2)functional groups to CoPc and CNT,respectively,facilitating the active centers of CoI being generated at lower potentials,and leading to the highest turnover frequency(TOF)being obtained over the CoPc-COOH/CNT-NH_(2)hybrid catalyst.The inherent directivity and saturability of covalent bonds formed via the amidation reaction ensure not only a higher density of Co active centers,but also an improved stability for CO_(2)reduction reaction(CO_(2)RR).The present study represents an effective strategy for improving MMCs performance by molecular modulating of metal phthalocyanines on functionalized carbon substrates directed by click confinement chemistry. | Huajian Xu Huizhu Cai Linxia Cui Limei Yu Rui Gao Chuan Shi | 2023 | Nano Research2023，16，3： | 2 |
| 5 | Implantable blood clot loaded with BMP-2 for regulation of osteoimmunology and enhancement of bone repair显示文摘The treatment of large-area bone defects still faces many difficulties and challenges.Here,we developed a blood clot delivery platform loaded with BMP-2 protein(BMP-2@BC)for enhanced bone regeneration.Blood clot gel platform as natural biomaterials can be engineered from autologous blood.Once implanted into the large bone defect site,it can be used for BMP-2 local delivery,as well as modulating osteoimmunology by recruiting a great number of macrophages and regulating their polarization at different stages.Moreover,due to the deep-red color of blood clot gel,mild localized hyperthermia under laser irradiation further accelerated bone repair and regeneration.We find that the immune niche within the bone defect microenvironment can be modulated in a controllable manner by the blood clots implantation and laser treatment.We further demonstrate that the newly formed bone covered almost 95%of the skull defect area by our strategy in both mice and rat disease models.Due to the great biocompatibility,photothermal potential,and osteoimmunomodulation capacity,such technology shows great promise to be used in further clinical translation. | Qin Fan Jinyu Bai Huajian Shan Ziying Fei Hao Chen Jialu Xu Qingle Ma Xiaozhong Zhou Chao Wang | 2021 | Bioactive Materials2021，6，11： | 2 |
| 6 | Experiments on Exploration of Shallow Fine Structures and the Construction of the 1-D Velocity Model in the Pingtan Island,Fujian显示文摘112 short-period seismographs were set up in the 400 km^2 area of Pingtan Island and its surrounding areas in Fujian.The combined observations of the airgun source and ambient noise source were carried out using a dense array to receive the 387 airgun signals excited around the island and one month of continuous ambient noise recording.The 1-D P-wave and S-wave shallow velocity model of Pingtan Island is obtained by the inversion of the airgun body wave’s first arrival time data,and the reliability of the velocity model is verified by using the surface wave phase velocity dispersion curve,which can provide initial model for subsequent 3-D imaging.The experimental results show that this experiment is a successful demonstration of local scale green non-destructive detection,which can provide basic data for shallow surface structure research and strong vibration simulation of the Pingtan Island. | GUO Yang XU Jiajun LIN Chen JIN Xing YAO Huajian YANG Hongfeng CAI Huiteng | 2019 | Earthquake Research in China2019，33，2： | 1 |
| 7 | CuI-nanoparticles-catalyzed selective synthesis of phenols, anilines, and thiophenols from aryl halides in aqueous solution 显示文摘 | XU Huajian LIANG Yufeng CAI Zhenya | 2011 | J Org Chem2011，76，7： | 1 |
| 8 | Lithiation-enhanced charge transfer and sliding strength at the silicon-graphene interface:A first-principles study显示文摘The application of silicon as ultrahigh capacity electrodes in lithium-ion batteries has been limited by a number of mechanical degradation mechanisms including fracture, delamination and plastic ratcheting, as a result of its large volumetric change during lithiation and delithiation. Graphene coating is one feasible technique to mitigate the mechanical degradation of Si anode and improve its conductivity. In this paper, first-principles calculations are performed to study the atomic structure, charge transfer and sliding strength of the interface between lithiated silicon and graphene. Our results show that Li atoms segregate at the(lithiated) Si-graphene interface preferentially, donating electrons to graphene and enhancing the interfacial sliding resistance. Moreover, the interfacial cohesion and sliding strength can be further enhanced by introducing single-vacancy defects into graphene.These findings provide insights that can guide the design of stable and efficient anodes of silicon/graphene hybrids for energy storage applications. | Cheng Chang Xiaoyan Li Zhiping Xu Huajian Gao | 2017 | Acta Mechanica Solida Sinica2017，30，3： | 1 |
| 9 | An active bacterial anti-adhesion strategy based on directional transportation of bacterial droplets driven by triboelectric nanogenerators显示文摘An active bacterial anti-adhesion strategy based on directional transportation of bacterial droplets driven by a triboelectric nanogenerator(TENG)has not been reported to date,although passive defense approaches can prevent bacterial adhesion by regulating superwetting surfaces combined with incorporated antibacterial substances.Here a triboelectric nanogenerator driving droplet system(TNDDS)was built to drive directional transportation of bacterial droplets to be eliminated,which comprises TENG with periodical frictional Kapton film and aluminum foils and a superhydrophobic driving platform(SDP)with paralleled driving electrodes.The current generated by the TENG triboelectricity is transmitted to the paralleled driving electrodes to form an electric field driving the directional transportation of charged droplets.The critical value of the driven droplet volume on SDP is closely related to the distributed electrodes’distance and width,and the driving distance of droplets is related to the number of electrodes.More crucially,TNDDS can actively drive the charged droplets of prepared triangular silver nanoprisms(Ag NPs)forward and back to mix with and remove a tiny bacterial droplet on an open SDP or in a tiny semi-enclosed channel.Bacteria could be killed by releasing Ag+and effectively removed by TNDDS by regulating the motion direction.Generally,this approach offers a promising application for removing bacteria from material surfaces driven by TENG and opens a new avenue for bacterial anti-adhesion. | Jing Lin Jialin Li Shichang Feng Caiqin Gu Huajian Li Hanqing Lu Fei Hu Duo Pan Ben Bin Xu Zhanhu Guo | 2023 | Nano Research2023，16，1： | 0 |
| 10 | Spatial distribution and network morphology of epicardial,endocardial,interstitial,and Purkinje cell-associated elastin fibers in porcine left ventricle显示文摘Cardiac extracellular matrices(ECM)play crucial functional roles in cardiac biomechanics.Previous studies have mainly focused on collagen,the major structural ECM in heart wall.The role of elastin in cardiac mechanics,however,is poorly understood.In this study,we investigated the spatial distribution and microstructural morphologies of cardiac elastin in porcine left ventricles.We demonstrated that the epicardial elastin network had location-and depth-dependency,and the overall epicardial elastin fiber mapping showed certain correlation with the helical heart muscle fiber architecture.When compared to the epicardial layer,the endocardial layer was thicker and has a higher elastin-collagen ratio and a denser elastin fiber network;moreover,the endocardial elastin fibers were finer and more wavy than the epicardial elastin fibers,all suggesting various interface mechanics.The myocardial interstitial elastin fibers co-exist with the perimysial collagen to bind the cardiomyocyte bundles;some of the interstitial elastin fibers showed a locally aligned,hinge-like structure to connect the adjacent cardiomyocyte bundles.This collagen-elastin combination reflects an optimal design in which the collagen provides mechanical strength and elastin fibers facilitate recoiling during systole.Moreover,cardiac elastin fibers,along with collagen network,closely associated with the Purkinje cells,indicating that this ECM association could be essential in organizing cardiac Purkinje cells into“fibrous”and“branching”morphologies and serving as a protective feature when Purkinje fibers experience large deformations in vivo.In short,our observations provide a structural basis for future in-depth biomechanical investigations and biomimicking of this long-overlooked cardiac ECM component. | Xiaodan Shi Song Zhang Yue Liu Bryn Brazile Jim Cooley J.Ryan Butler Sara R.McMahan Karla L.Perez Jiazhu Xu Timothy Eastep Kytai T.Nguyen Pietro Bajona Matthias Peltz Huajian Gao Yi Hong Jun Liao | 2023 | Bioactive Materials2023，，1： | 0 |
| 11 | Expanding Synergy with Ethiopia显示文摘Mutually beneficial cooperation is creating employment opportunities in Africa.In 2017 alone,Zhang Huarong took 132 flights totaling 480,000 kilometers,including 34 round trips between China and Ethiopia.Zhang considers Ethiopia his second home.“I have not only invested money there,but also considerable energy and emotion,”he said.“Why all the effort?Because it gives me a profound sense of satisfaction.Bringing China's development experience to Africa and changing the lives of local people make me feel that what I do is very meaningful.It's more important than making money.” | Zheng Xu Huajian Group | 2023 | China Pictorial2023，，10： | 0 |
| 12 | Preface to the special issue on complicated features on seismic sources and deep structures显示文摘Earthquake is a kind of natural phenomenon in the Earth.Earthquake seismology has been developed quickly since modern digital seismometers were applied to observations.From seismic records,seismologists study source properties of the earthquakes and detect multi-scale structural variations in the crust,mantle,and core.Earthquake is complicated,including seismicity and seismic sources. | Yuan Gao Lisheng Xu Huajian Yao Xiaobo Tian | 2021 | Earthquake Science2021，34，1： | 0 |
| 13 | High-resolution velocity structure and seismogenic potential of strong earthquakes in the Bamei-Kangding segment of the Xianshuihe fault zone显示文摘On September 5,2022,a strong MS6.8 earthquake struck the Luding area in the Kangding-Moxi segment of the Xianshuihe fault zone,which is the northern boundary of the Sichuan-Yunnan rhombic block,causing considerable casualties.The Bamei-Kangding segment of the Xianshuihe fault zone,which is located only tens of kilometers away from the Luding earthquake,has hosted frequent moderate to strong earthquakes in history and is a dangerous earthquake-prone zone.Therefore,it is critical to investigate the regional seismogenic environment for strong earthquakes and to evaluate the impact of the Luding earthquake in this area.For this purpose,we deployed a dense seismic array comprising over 200 short-period nodes in this region from July to August,2022 and acquired seismic ambient noise for over 30 days.Using the collected data,we conducted surface wave tomography and obtained a high-resolution 3-D shear wave velocity model for the regional shallow crust down to 8 km in depth.The key findings include:(1)the Bamei-Kangding segment of the Xianshuihe fault zone exhibits widespread stripped lowvelocity anomalies,suggesting shear movements at a relatively high temperature of the Xianshuihe fault zone;the Zheduoshan granitic pluton situated between the Zheduotang and southern Selaha faults shows a distinct low-velocity anomaly,which may be attributed to the localized high-temperature anomaly resulted by a deep magmatic heat source and the recent rapid uplift of the Zheduoshan area;(2)a ten-kilometer-wide high velocity body found below 4 km in depth near the Zhonggu area in the Bamei segment coincides with the seismic gap of moderate to strong earthquakes in this region,suggesting that the high velocity body may act as a seismic barrier;(3)the heterogeneity of the velocity structure along the Bamei-Kangding segment of the Xianshuihe fault zone corresponds to the regional changes in temperature,which reveals the reason for the spatially varying seismogenic potential in this segment;especially,the Selaha and Zheduotang faults which are located along the boundaries between the high and low velocity anomalies may possess considerable seismogenic potential;(4)the Coulomb failure stress calculations indicate that the Luding earthquake has imposed nontrivial stress loading in the Bamei-Kangding segment,and may shorten the earthquake recurrence intervals of the southern Selaha fault,the Zheduotang fault,and the Xuemenkan segment of the Xianshuihe fault zone.Thus,the Luding earthquake may potentially pose threats to the Sichuan-Xizang railway passing through this region. | Yan ZHAO Junlun LI Jian XU Huajian YAO Gaohua ZHU Hongfeng YANG Jinyu ZHANG Renqi LU | 2023 | Science China Earth Sciences2023，66，9： | 0 |
| 14 | Highly efficient twin-field quantum key distribution with neural networks显示文摘Quantum key distribution(QKD)allows two legitimate parties,Alice and Bob,to share a series of random bits that are secured by the laws of quantum mechanics.As a remarkable theoretical progress towards longer distances. | Jingyang LIU Qingqing JIANG Huajian DING Xiao MA Mingshuo SUN Jiaxin XU Chun-Hui ZHANG Shipeng XIE Jian LI Guigen ZENG Xingyu ZHOU Qin WANG | 2023 | Science China(Information Sciences)2023，66，8： | 0 |
| 15 | Deeply‐Recursive Attention Network for video steganography显示文摘Video steganography plays an important role in secret communication that conceals a secret video in a cover video by perturbing the value of pixels in the cover frames.Imperceptibility is the first and foremost requirement of any steganographic approach.Inspired by the fact that human eyes perceive pixel perturbation differently in different video areas,a novel effective and efficient Deeply‐Recursive Attention Network(DRANet)for video steganography to find suitable areas for information hiding via modelling spatio‐temporal attention is proposed.The DRANet mainly contains two important components,a Non‐Local Self‐Attention(NLSA)block and a Non‐Local Co‐Attention(NLCA)block.Specifically,the NLSA block can select the cover frame areas which are suitable for hiding by computing the correlations among inter‐and intra‐cover frames.The NLCA block aims to effectively produce the enhanced representations of the secret frames to enhance the robustness of the model and alleviate the influence of different areas in the secret video.Furthermore,the DRANet reduces the model parameters by performing similar operations on the different frames within an input video recursively.Experimental results show the proposed DRANet achieves better performance with fewer parameters than the state‐of‐the‐art competitors. | Jiabao Cui Liangli Zheng Yunlong Yu Yining Lin Huajian Ni Xin Xu Zhongfei Zhang | 2023 | CAAI Transactions on Intelligence Technology2023，8，4： | 0 |
| 16 | Hydroarylation of terminal alkynes with arylboronic acids catalyzed by low loadings of palladium显示文摘The hydroarylation reaction of terminal alkynes with arylboronic acids catalyzed by low(400 ppm) loadings of palladium has been developed. The reaction is broad in scope and high-yielding, even on multigram scale. It is suitable for the synthesis of alkenes labeled with deuterium, and for the late-stage modification of bioactive molecules. | Lei Xu Shiyu Li Qi Zhang Ning Deng Biao Zhang Huajian Xu | 2023 | Chinese Chemical Letters2023，34，2： | 0 |
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