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| 1 | Metal composition of layered double hydroxides(LDHs) regulating ClO_4^- adsorption to calcined LDHs via the memory effect and hydrogen bonding显示文摘A series of calcined carbonate layered double hydroxides(CLDHs) with various metal compositions and different M2+/M3+ ratios were prepared as adsorbents for perchlorate. Adsorption isotherms fit Langmuir model well, and the adsorption amount followed the order of MgAl-CLDHs > MgFe-CLDHs >>> ZnAl-CLDHs. The isotherms of MgAl-CLDHs and MgFe-CLDHs displayed a two-step shape at low and high concentration ranges and increased with an increase in the M2+/M3+ ratio from 2 to 4. The two-step isotherm was not observed for ZnAl-CLDHs, and the adsorption was minimally affected by the M2+/M3+ ratio. The LDHs, CLDHs and the reconstructed samples were characterized by X-ray diffraction, SEM, FT-IR and Raman spectra to delineate the analysis of perchlorate adsorption mechanisms. The perchlorate adsorption of MgAl-CLDHs and MgFe-CLDHs was dominated by the structural memory effect and the hydrogen bonds between the free hydroxyl groups on the reconstructed-LDHs and the oxygen atoms of the perchlorates. For ZnAl-CLDHs, the perchlorate adsorption was controlled by the structural memory effect only, as the hydroxyl groups on the hydroxide layers preferred to form strong hydrogen bonds with carbonate over perchlorate, which locked the intercalated perchlorate into a more confined nano-interlayer. Several distinct binding mechanisms of perchlorate by CLDHs with unique M2+ ions were proposed. | Yajie Lin Qile Fang Baoliang Chen | 2014 | Journal of Environmental Sciences2014，26，3： | 6 |
| 2 | Precise orbit determination for BDS satellites显示文摘Since the frst pair of BeiDou satellites was deployed in 2000,China has made continuous eforts to establish its own independent BeiDou Navigation Satellite System(BDS)to provide the regional radio determination satellite service as well as regional and global radio navigation satellite services,which rely on the high quality of orbit and clock products.This article summarizes the achievements in the precise orbit determination(POD)of BDS satellites in the past decade with the focus on observation and orbit dynamic models.First,the disclosed metadata of BDS satellites is presented and the contribution to BDS POD is addressed.The complete optical properties of the satellite bus as well as solar panels are derived based on the absorbed parameters as well the material properties.Secondly,the status and tracking capabilities of the L-band data from accessible ground networks are presented,while some low earth orbiter satellites with onboard BDS tracking capability are listed.The topological structure and measurement scheme of BDS Inter-Satellite-Link(ISL)data are described.After highlighting the progress on observation models as well as orbit perturbations for BDS,e.g.,phase center corrections,satellite attitude,and solar radiation pressure,diferent POD strategies used for BDS are summarized.In addition,the urgent requirement for error modeling of the ISL data is emphasized based on the analysis of the observation noises,and the incompatible characteristics of orbit and clock derived with L-band and ISL data are illuminated and discussed.The further researches on the improvement of phase center calibration and orbit dynamic models,the refnement of ISL observation models,and the potential contribution of BDS to the estimation of geodetic parameters based on L-band or ISL data are identifed.With this,it is promising that BDS can achieve better performance and provides vital contributions to the geodesy and navigation. | Qile Zhao Jing Guo Chen Wang Yifei Lyu Xiaolong Xu Chao Yang Junqiang Li | 2022 | Satellite Navigation2022，3，1： | 4 |
| 3 | Non-Darcy flow seepage characteristics of saturated broken rocks under compression with lateral constraint显示文摘sing an MTS816.03 test system and self-designed seepage apparatus,seepage tests of saturated broken rocks were conducted,and the influence of lithology,axial stress,grain size distribution and loading rate on seepage characteristics was analyzed.The results show that:(1) Under the same axial stress(12 MPa)the permeability of different lithologic samples increases in the order:gangue < mudstone < sand stone < limestone.The permeability of gangue is 3 magnitudes lower than that of limestone.The absolute value of the non-Darcy coefficient β increases in the order:limestone < sandstone < mudstone < gangue The non-Darcy coefficient β of limestone,which is positive,is 5 magnitudes lower than that of gangue.(2)With increasing axial stress,the permeability of saturated broken sandstone decreases,and the absolute value of the non-Darcy coefficient β increases.After the axial stress exceeds 12 MPa,the curves of perme ability and non-Darcy coefficient β all tend to be stable.(3) With increasing Talbol power exponent,the permeability increases,and the absolute value of the non-Darcy coefficient β decreases.(4) With increas ing loading,the permeability increases,and the absolute value of the non-Darcy coefficient β decreases When the loading rate is 0.5 kN/s,the non-Darcy coefficient β is positive. | Yu Bangyong Chen Zhanqing Ding Qile Wang Luzhen | 2016 | International Journal of Mining Science and Technology2016，26，6： | 2 |
| 4 | Near-field surface displacement and permanent deformation induced by the Alaska Mw 7.5 earthquake determined by high-rate real-time ambiguity-fixed PPP solutions显示文摘High-rate GPS data from the United States continuously operating reference stations in the Alaska region are processed using the recently developed precise point positioning(PPP) technique. The traditional PPP technique does not fix ambiguities into their integers because these ambiguities do not have an integer nature when data from a single receiver, as well as precise orbit and clock corrections, are used. Additional corrections, i.e.,uncalibrated phase delay(UPD), are needed to fix integer ambiguities and consequently improve positioning accuracy. This study proposes a methodology to compute for wide-lane and L2(the second L-band frequency) UPDs using the geometry-based model and subsequently applies these parameters to the computation for ambiguity-fixed solutions. The instantaneous displacements of near-field sites, as well as the permanent deformations after the earthquake, are therefore obtained for the January 5, 2013,Alaska earthquake. The real-time performance of PPP solutions are assessed by considering realistic data latency and data interval of corrections. Ambiguity-fixed solutions are compared with ambiguity-float ones. The comparison shows that the positioning accuracy can be improved significantly when the ambiguities are fixed correctly. Thesolutions using the real-time corrections are also compared with those using post-processing corrections, i.e., Center for Orbit Determination in Europe final orbit and clock.Although the accuracy is somehow degraded because of the data latency and data interval, the real-time results are satisfactory for use in monitoring the small-scale deformation(1–2 cm) caused by the Alaska earthquake. In addition, the kinematic ambiguity-fixed PPP solutions for7 days around the earthquake are calculated to obtain permanent pre- and post-earthquake deformations. The deformations computed from real-time and post-processing corrections do not appear to be significantly different. | Gang Chen Qile Zhao | 2014 | Chinese Science Bulletin2014，59，34： | 2 |
| 5 | A variant of raw observation approach for BDS/GNSS precise point positioning with fast integer ambiguity resolution显示文摘The Precise Point Positioning(PPP)technique uses a single Global Navigation Satellite System(GNSS)receiver to collect carrier-phase and code observations and perform centimeter-accuracy positioning together with the precise satellite orbit and clock corrections provided.According to the observations used,there are basically two approaches,namely,the ionosphere-free combination approach and the raw observation approach.The former eliminates the ionosphere effects in the observation domain,while the latter estimates the ionosphere effects using uncombined and undifferenced observations,i.e.,so-called raw observations.These traditional techniques do not fix carrier-phase ambiguities to integers,if the additional corrections of satellite hardware biases are not provided to the users.To derive the corrections of hardware biases in network side,the ionosphere-free combination operation is often used to obtain the ionosphere-free ambiguities from the L1 and L2 ones produced even with the raw observation approach in earlier studies.This contribution introduces a variant of the raw observation approach that does not use any ionosphere-free(or narrow-lane)combination operator to derive satellite hardware bias and compute PPP ambiguity float and fixed solution.The reparameterization and the manipulation of design matrix coefficients are described.A computational procedure is developed to derive the satellite hardware biases on WL and L1 directly.The PPP ambiguity-fixed solutions are obtained also directly with WL/L1 integer ambiguity resolutions.The proposed method is applied to process the data of a GNSS network covering a large part of China.We produce the satellite biases of BeiDou,GPS and Galileo.The results demonstrate that both accuracy and convergence are significantly improved with integer ambiguity resolution.The BeiDou contributions on accuracy and convergence are also assessed.It is disclosed for the first time that BeiDou only ambiguity-fixed solutions achieve the similar accuracy with that of GPS/Galileo combined,at least in China's Mainland.The numerical analysis demonstrates that the best solutions are achieved by GPS/Galileo/BeiDou solutions.The accuracy in horizontal components is better than 6 mm,and in the height component better than 20 mm(one sigma).The mean convergence time for reliable ambiguity-fixing is about 1.37 min with 0.12 min standard deviation among stations without using ionosphere corrections and the third frequency measurements.The contribution of BDS is numerically highlighted. | Qile Zhao Jing Guo Sijing Liu Jun Tao Zhigang Hu Gang Chen | 2021 | Satellite Navigation2021，2，1： | 2 |
| 6 | 2020 Roadmap on gas-involved photo-and electro-catalysis显示文摘Green reactions not only provide us chemical products without any pollution,but also offer us the viable technology to realize difficult tasks in normal conditions.Photo-,photoelectro-,and electrocatalytic reactions are indeed powerful tools to help us to embrace bright future.Especially,some gas-involved reactions are extremely useful to change our life environments from energy systems to liquid fuels and cost-effective products,such as H2 evolution(H2 production),02 evolution/reduction,CO2 reduction,N2 reduction(or N2 fixation) reactions.We can provide fuel cells clean H2 for electric vehicles from H2 evolution reaction(HER),at the same time,we also need highly efficient 02 reduction reaction(ORR) in fuel cells for improving the reaction kinetics.Moreover,we can get the clean oxidant O2 from water through O2 evolution reaction(OER),and carry out some reactions without posing any pollution to reaction systems.Furthermore,we can translate the greenhouse gas CO2 into useful liquid fuels through CO2 reduction reaction(CRR).Last but not the least,we can get ammonia from N2 reduction reaction(NRR),which can decrease energy input compared to the traditional Hubble process.These reactions,such as HER,ORR,OER,CRR and NRR could be realized through solar-,photoelectro-and electro-assisted ways.For them,the catalysts used play crucial roles in determining the efficiency and kinds of products,so we should consider the efficiency of catalysts.However,the cost,synthetic methods of catalysts should also be considered.Nowadays,significant progress has been achieved,however,many challenges still exist,reaction systems,catalysts underlying mechanisms,and so on.As extremely active fields,we should pay attention to them.Under the background,it has motivated us to contribute with a roadmap on ’GasInvolved Photo-and Electro-Catalysis’. | Yulu Yang Yang Tang Haomin Jiang Yongmei Chen Pingyu Wan Maohong Fan Rongrong Zhang Sana Ullah Lun Pan Ji-Jun Zou Mengmeng Lao Wenping Sun Chao Yang Gengfeng Zheng Qiling Peng Ting Wang Yonglan Luo Xuping Sun Alexander S.Konev Oleg V.Levin Panagiotis Lianos Zhuofeng Hu Zhurui Shen Qinglan Zhao Ying Wang Nadia Todorova Christos Trapalis Matthew V.Sheridan Haipeng Wang Ling Zhang Songmei Sun Wenzhong Wang Jianmin Ma | 2019 | Chinese Chemical Letters2019，30，12： | 1 |
| 7 | Preparation of nanosized Mo powder by microwave plasma chemical vapor deposition method 显示文摘 | Gu Hongchen Chen Qiling | 1999 | Materials Chemistry and Physice1999，59，： | 1 |
| 8 | d(GC)n repeats form Z-DNA within promoter region and repress the promoter activity in Escherichia coil显示文摘 | Shenghe Huang Chuxin Wu Dongming Li Haizhou Wang Zechang Rao Qiling Shen Chunxiang Chen Yong Liu Xun Xu Chengyu Hu | 2015 | Acta Biochimica et Biophysica Sinica2015，47，7： | 1 |
| 9 | Inhibitory effect of boron against Botrytis cinerea on table grapes and its possible mechanisms of action显示文摘 | QIN Guozheng ZONG Yuanyuan CHEN Qiling | 2010 | International Journal of Food Microbiology2010，138，1： | 1 |
| 10 | Inhibitoryeffect of boron against Botrytis cinerea on table grapes and its possiblemechanisms of action显示文摘 | QIN Guozheng ZONG Yuanyuan CHEN Qiling | 2010 | International Journal of Food Microbiology2010，138，12： | 1 |
| 11 | Synthesis,decoration and properties of three-dimensional graphene-based macrostructures:A review显示文摘 | Fang Qile Shen Yi Chen Baoliang | 2015 | Chemical Engineering Journal2015，，264： | 1 |
| 12 | Preparation of Nanosized Mo Powder by Microwave Plasma Chemical Vapot Deposition Method显示文摘 | Liu Binghai Gu Hongchen Chen Qiling | 1999 | Materials Chemistry and Physics1999，59，3： | 1 |
| 13 | Bioinspired Adaptive,Elastic,and Conductive Graphene Structured Thin-Films Achieving High-Efficiency Underwater Detection and Vibration Perception显示文摘Underwater exploration has been an attractive topic for understanding the very nature of the lakes and even deep oceans.In recent years,extensive efforts have been devoted to developing functional materials and their integrated devices for underwater information capturing.However,there still remains a great challenge for water depth detection and vibration monitoring in a high-efficient,controllable,and scalable way.Inspired by the lateral line of fish that can sensitively sense the water depth and environmental stimuli,an ultrathin,elastic,and adaptive underwater sensor based on Ecoflex matrix with embedded assembled graphene sheets is fabricated.The graphene structured thin film is endowed with favourable adaptive and morphable features,which can conformally adhere to the structural surface and transform to a bulged state driven by water pressure.Owing to the introduction of the graphene-based layer,the integrated sensing system can actively detect the water depth with a wide range of 0.3-1.8 m.Furthermore,similar to the fish,the mechanical stimuli from land(e.g.knocking,stomping)and water(e.g.wind blowing,raining,fishing)can also be sensitively captured in real time.This graphene structured thin-film system is expected to demonstrate significant potentials in underwater monitoring,communication,and risk avoidance. | Qiling Wang Peng Xiao Wei Zhou Yun Liang Guangqiang Yin Qiu Yang Shiao-Wei Kuo Tao Chen | 2022 | Nano-Micro Letters2022，14，4： | 1 |
| 14 | Role of real-time three-dimensional transesophageal echocardiography in mitral valve repair显示文摘Background and objective Pre-operative assessment of mitral valve (MV) anatomy is essential to surgical design in patients undergoing MV repair.Although 2-dimensional (2D) echocardiography provides precise information regarding MV anatomy,RT-3D TEE could increase the understanding of MV apparatus and individual scallop identification.We aimed to investigate the value of RT- 3DTEE in MV repair.Methods RT-3DTEE was performed in six patients with mitral valve prolapse (MVP) by using Philips 1E33 with X7-2t probe.Preoperative RT-3DTEE studies were compared with surgical findings in patients undergoing surgical mitral valve repair,and quantitative evaluation was performed by QLab 6.0 software before and after surgical mitral valve repair.Results RT- 3DTEE could display dynamic morphology of MV,the location of prolapse,and spatial relation to the surrounding tissue.It could provide surgical views of the valves and the valvular apparatus.These results were consistent with surgical findings.The quantitative evaluation before and after surgical MV repair indicated that anterolateral to posteromedial diameter of annulus,anterior to posterior diameter of annulus,perimeter of annulus,and area of annulus in projection plane were significantly smaller after operation compared with those before operation (P<0.05).The length of posterior leaflet,the area of anterior and posterior leaflet,the maximal prolapse height,the volume of leaflet prolapse and the length of coaptation in projection plane were significantly reduced after operation (P<0. 05).Conclusion RT-3DTEE is a unique new modality for rapid and accurate evaluation ofmitral valve prolapse and mitral valve repair. | Cuizhen Pan~1 Xianhong Shu~1 Qiling Cao~2 Chunsheng Wang~1 Wenjun Ding~1 Haozhu Chen~1 1 Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China, 2 Rush University Medical Center, Chicago, USA | 2008 | Journal of Geriatric Cardiology2008，5，3： | 1 |
| 15 | Self-targeting visualizable hyaluronate nanogel for synchronized intracellular release of doxorubicin and cisplatin in combating multidrug-resistant breast cancer显示文摘Multidrug-resistance(MDR)featuring complicated and poorly defined mechanisms is a major obstacle to the success of cancer chemotherapy in the clinic.Compound nanoparticles comprising multiple cytostatics with different mechanisms of action are commonly developed to tackle the multifaceted nature of clinical MDR.However,the different pharmacokinetics and release profiles of various drugs result in inconsistent drug internalization and suboptimal drug synergy at the tumor sites.In the present study,a type of self-targeting hyaluronate(HA)nanogels((CDDPH)^ANG/DOX)to reverse drug resistance through the synchronized pharmacokinetics,intratumoral distribution,and intracellular release of topoisomerase II inhibitor doxorubicin(DOX)and DNA-crosslinking agent cisplatin(CDDP)is developed.With prolonged circulation time and enhanced intratumoral accumulation in vivo,(CDDP)^HANG/DOX shows efficient drug delivery into the drug-resistant MCF-7/ADR breast cancer cells and enhanced antitumor activity.Besides,fluorescence imaging of DOX combined with the micro-computed tomography(micro-CT)imaging of CDDP facilitates the visualization of this combination tumor chemotherapy.With visualizable synchronized drug delivery,the self-targeting in situ crosslinked nanoplatform may hold good potential in future clinical therapy of advanced cancers. | Wen Ma Qiling Chen Weiguo Xu Meng Yu Yuanyuan Yang Binhua Zou Yu Shrike Zhang Jianxun Ding Zhiqiang Yu | 2021 | Nano Research2021，14，3： | 1 |
| 16 | Inhibitory effect of boron against Botrytis cinerea on table grapes and its possible mechanisms of action显示文摘 | QIN Guozheng ZONG Yuanyuan CHEN Qiling | 2010 | International Journal of Food Microbiology2010，138，： | 1 |
| 17 | Design of a novel mitochondria targetable turn-on fluorescence probe for hydrogen peroxide and its two-photon bioimaging applications显示文摘Considering that hydrogen peroxide(H2O2)plays significant roles in oxidative stress,the cellular signal transduction and essential biological process regulation,the detection and imaging of H2O2 in living systems undertakes critical responsibility.Herein,we have developed a novel two-photon fluorescence turn on probe,named as Pyp-B for mitochondria H2O2 detection in living systems.Selectivity studies show that probe Pyp-B exhibit highly sensitive response toward H2O2 than other reactive oxygen species(ROS)and reactive nitrogen species(RNS)as well as biologically relevant species.The fluorescence colocalization studies demonstrate that the probe can localize in the mitochondria solely.Furthermore,as a bio-compatibility molecule,the highly selective and sensitive of fluorescence probe Pyp-B have been confirmed by its cell imaging application of H2O2 in living A549 cells and zebrafishes under the physiological conditions. | Kangnan Wang Wen Ma Yuchun Xu Xin Liu Gui Chen Meng Yu Qiling Pan Chaobo Huang Xiaochuan Li Qingchun Mu Yongbing Sun Zhiqiang Yu | 2020 | Chinese Chemical Letters2020，31，12： | 1 |
| 18 | Inhibitory effect of boron against Botrytis cinerea on table grapes and its possible mechanisms of action显示文摘 | QIN Guozheug ZONG Yuanyuan CHEN Qiling | 2010 | International Journal of Food Microbiology2010，138，12： | 1 |
| 19 | A TWO-GRID FINITE ELEMENT APPROXIMATION FOR NONLINEAR TIME FRACTIONAL TWO-TERM MIXED SUB-DIFFUSION AND DIFFUSION WAVE EQUATIONS显示文摘In this paper,we develop a two-grid method(TGM)based on the FEM for 2D nonlinear time fractional two-term mixed sub-diffusion and diffusion wave equations.A two-grid algorithm is proposed for solving the nonlinear system,which consists of two steps:a nonlinear FE system is solved on a coarse grid,then the linearized FE system is solved on the fine grid by Newton iteration based on the coarse solution.The fully discrete numerical approximation is analyzed,where the Galerkin finite element method for the space derivatives and the finite difference scheme for the time Caputo derivative with orderα∈(1,2)andα1∈(0,1).Numerical stability and optimal error estimate O(h^(r+1)+H^(2r+2)+τ^(min{3−α,2−α1}))in L^(2)-norm are presented for two-grid scheme,where t,H and h are the time step size,coarse grid mesh size and fine grid mesh size,respectively.Finally,numerical experiments are provided to confirm our theoretical results and effectiveness of the proposed algorithm. | Yanping Chen Qiling Gu Qingfeng Li Yunqing Huang | 2022 | Journal of Computational Mathematics2022，40，6： | 0 |
| 20 | High Strength and Ductility of a MgAg/MgGdYAg/MgAg Sandwiched Plate Produced by High-Pressure Torsion显示文摘Due to their unique precipitation behavior,magnesium-rare earth(Mg-RE)alloys exhibit excellent strength and high thermal stability.However,owing to the negative blocking effect of precipitation on dislocation slipping,the plasticity and ductility of Mg-RE alloys become deteriorate after aging treatment.In this work,a novel strategy to improve the combination of strength and ductility by designing a laminate heterostructured Mg alloy is proposed.High-pressure torsion(HPT)processing is employed to fabricate a clean and well-bonded interface between MgGdYAg and MgAg alloys.The two alloys have huge differences in precipitation hardening,and ductility is improved due to two facts.For one thing,the density of the second phases in the MgAg alloy is much lower than that of MgGdYAg alloy;for another,the non-basal〈c+a〉slipping is continuously activated during deformation.Through this mechanism,the uniform elongation of the heterostructured MgAg/MgGdYAg/MgAg alloy is improved to 7.1%. | Qile Huo Yaxin Chen Bo Gao Yi Liu Manping Liu Xuefei Chen Hao Zhou | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，2： | 0 |
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