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32篇 您的检索式:作者名="Guo Yingjun"
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1Theoretical and simulation research of hydrodynamic instabilities in inertial-confinement fusion implosions显示文摘Inertial fusion energy(IFE)has been considered a promising,nearly inexhaustible source of sustainable carbon-free power for the world's energy future.It has long been recognized that the control of hydrodynamic instabilities is of critical importance for ignition and high-gain in the inertial-confinement fusion(ICF)hot-spot ignition scheme.In this mini-review,we summarize the progress of theoretical and simulation research of hydrodynamic instabilities in the ICF central hot-spot implosion in our group over the past decade.In order to obtain sufficient understanding of the growth of hydrodynamic instabilities in ICF,we first decompose the problem into different stages according to the implosion physics processes.The decomposed essential physics processes that are associated with ICF implosions,such as Rayleigh-Taylor instability(RTI),Richtmyer-Meshkov instability(RMI),Kelvin-Helmholtz instability(KHI),convergent geometry effects,as well as perturbation feed-through are reviewed.Analytical models in planar,cylindrical,and spherical geometries have been established to study different physical aspects,including density-gradient,interface-coupling,geometry,and convergent effects.The influence of ablation in the presence of preheating on the RTI has been extensively studied by numerical simulations.The KHI considering the ablation effect has been discussed in detail for the first time.A series of single-mode ablative RTI experiments has been performed on the Shenguang-Ⅱlaser facility.The theoretical and simulation research provides us the physical insights of linear and weakly nonlinear growths,and nonlinear evolutions of the hydrodynamic instabilities in ICF implosions,which has directly supported the research of ICF ignition target design.The ICF hot-spot ignition implosion design that uses several controlling features,based on our current understanding of hydrodynamic instabilities,to address shell implosion stability,has been briefly described,several of which are novel.LiFeng Wang WenHua Ye XianTu He JunFeng Wu ZhengFeng Fan Chuang Xue HongYu Guo WenYong Miao YongTeng Yuan JiaQin Dong Guo Jia Jing Zhang YingJun Li Jie Liu Min Wang YongKun Ding WeiYan Zhang 2017Science China(Physics,Mechanics & Astronomy)2017,60,5:4
2Rh-doped PdAg nanoparticles as efficient methanol tolerance electrocatalytic materials for oxygen reduction显示文摘Direct methanol fuel cells(DMFCs)have received extensive attention on their high efficiency,high reliability,and no carbon emission.Unfortunately,the poor methanol tolerance and sluggish oxygen reduction reaction(ORR)at cathode have seriously hindered their further development.Herein we report the synthesis of a new class of Rh-doped PdAg alloy nanoparticles(NPs)for boosting ORR activity with high methanol tolerance capacity concurrently.The ORR mass activity of typical Rh_4Pd_(40)Ag_(56)NPs is 4.2 times higher than that of commercial Pt catalyst.Moreover,it shows a great methanol tolerance capability by maintaining 92.4%in ORR mass activity in alkaline solution with 0.1 mol L^(à1)methanol,against a big decrease of almost 100%for commercial Pt.Even after 30,000 potential cycles with 1.0 mol L^(à1)methanol,Rh_4Pd_(40)Ag_(56)NPs still retain ORR mass activity of up to 68.3%.DFT calculations reveal that excellent ORR performance with excellent methanol tolerance originates the active d-band-pinning engineering for an efficient site-independent electron-transfer.A generalized d-band mediated fine electron-transfer tuning path has blueprinted for effectively minimizing intrinsic ORR barriers with high current density.The present work highlights the key role of Rh doping in enhancing the ORR activity and methanol tolerance ability of PdAg NPs for future high-performance DMFCs.Yingjun Sun Bolong Huang Nuoyan Xu Yingjie Li Mingchuan Luo Chunji Li Yingnan Qin Lei Wang Shaojun Guo 2019Science Bulletin2019,64,1:4
3Hydrothermal growth of whitlockite coating on β-tricalcium phosphate surfaces for enhancing bone repair potential显示文摘In this study, we developed a simple approach for the controllable growth of whitlockite(WH) on a β-tricalcium phosphate surface and investigated its cell viability via CCK-8, its live-dead staining and its alkaline phosphatase activity. Herein, WH with controllable morphologies was prepared by regulating the hydrothermal reaction conditions. The results of scanning electron microscopy, X-ray diffraction and Xray photoelectron spectroscopy indicated that pure hexagonal plates of WH were prepared successfully.In vitro cell experiments showed that WH possessed excellent biocompatibility and effectively promoted the adhesion and proliferation of mouse bone mesenchymal stem cells. The osteogenesis of the WH was also enhanced. The obtained WH was expected to be utilized for promising applications as implantable block materials for bone repair.Xiaoheng Guo Xiao Liu Huichang Gao Xuetao Shi Naru Zhao Yingjun Wang 2018Journal of Materials Science & Technology2018,34,6:2
4Whole-exome sequencing reveals twovariants in thegene in two Chinese patients with left ventricular non-compaction cardiomyopathy显示文摘Importance:Pathogenic variants in theRBM20 gene are associated with aggressive dilated cardiomyopathy(DCM).Recently,RBM20 was found to be associated with left ventricular non-compaction cardiomyopathy(LVNC).Thus far,only five families with LVNC have been reported to carry variants inRBM20.It remains unknown whether the variants inRBM20 associated with DCM can also cause LVNC.Objective:To elucidate the causativeRBM20 variant in two unrelated patients with both LVNC and DCM,and to identify the clinical characteristics associated with variants inRBM20.Methods:Trio whole-exome sequencing(WES)was performed.Variants were filtered and classified in accordance with the guidelines of the American College of Medical Genetics and Genomics(ACMG).Results:We identified two distinctde novo variants inRBM20(one per patient)in these two patients with LVNC.Both variants have been reported in patients with DCM,without the LVNC phenotype.Patient 1 was an 11-year-old girl who had DCM,LVNC,and heart failure;the ratio of noncompacted-to-compacted myocardium was 2.7:1.Ade novo heterozygous variant c.1907G>A(p.Arg636His)in exon 9 was identified in this patient.Patient 2 was a 13-year-old boy who had clinical phenotypes identical to those of Patient 1;the ratio of noncompacted-to-compacted myocardium was 3.2:1 in this patient.WES revealed ade novo heterozygous variant c.1909A>G(p.Ser637Gly)in exon 9.Both variants were previously characterized as pathogenic,and our study classified them as pathogenic variants based on the ACMG guidelines.Interpretation:We found that two patients with LVNC had variants inRBM20.Our results extended the clinical spectrum of the twoRBM20 variants and illustrated that the same variant inRBM20 can cause DCM,with or without the LVNC phenotype.Qiqing Sun Jun Guo Chanjuan Hao Ruolan Guo Xuyun Hu Yuanying Chen Weili Yang Wei Li Yingjun Feng 2020Pediatric Investigation2020,4,1:2
5Dynamic dispersion stability of graphene oxide with metal ions显示文摘Graphene oxide(GO),an important chemical precursor of graphene,can stably disperse in aqueous surrounding and undergo aggregation as metal cations introduced.The usual instability of GO with ions is caused by the shielding effect of ions and crosslinking between GO and ions.However,the dynamic stability of GO under ions exchange still remains unclear.Here,we investigated the dynamic dispersion stability of GO with metal ions and observed a redispersion behavior in concentrated Fe3+solution,other than permanent aggregation.The exchange with Fe3+ions drives the reversion of zeta(ζ)potential and enables the redispersion to individual GO-Fe3+complex sheets,following a dynamic electric double layer(EDL)mechanism.It is found that the specifically strong electrostatic shielding effect and coordination attraction between Fe3+and functional oxygen groups allows the selective redispersion of GO in concentrated Fe3+solution.The revealed dynamic dispersion stability complements our understanding on the dispersive stability of GO and can be utilized to fabricate graphene-metal hybrids for rich applications.Yinghui He Yingjun Liu Fan Guo Kai Pang Bo Fang Ya Wang Dan Chang Zhen Xu Chao Gao 2020Chinese Chemical Letters2020,31,6:2
6Allele-specific targeting of hsa-miR-657 to human IGF2R creates a potential mechanism underlying the association of ACAA-insertion/deletion polymorphism with type 2 diabetes显示文摘Ke Lv Yingjun Guo Yiliang Zhang Kaiyu Wang Yin Jia Shuhan Sun 2008Biochemical and Biophysical Research Communications2008,,1:1
7Transient inhibition of foot-and-mouth disease virus replication by siRNAs silencing VP1 protein coding region显示文摘Ke Lv Yingjun Guo Yiliang Zhang Kaiyu Wang Ka Li Yan Zhu Shuhan Sun 2008Research in Veterinary Science2008,,3:1
8Gravity affects the responsiveness of Runx2 to 1, 25-dihydroxyvitamin D3 (VD3)显示文摘Feima Guo Zhongquan Dai Feng Wu Zhaoxia Liu Yingjun Tan Yumin Wan Peng Shang Yinghui Li 2013Acta Astronautica2013,,:1
9Precise Thermoplastic Processing of Graphene Oxide Layered Solid by Polymer Intercalation显示文摘The processing capability is vital for the wide applications of materials to forge structures as-demand.Graphene-based macroscopic materials have shown excellent mechanical and functional properties.However,different from usual polymers and metals,graphene solids exhibit limited deformability and processibility for precise forming.Here,we present a precise thermoplastic forming of graphene materials by polymer intercalation from graphene oxide(GO)precursor.The intercalated polymer enables the thermoplasticity of GO solids by thermally activated motion of polymer chains.We detect a critical minimum containing of intercalated polymer that can expand the interlayer spacing exceeding 1.4 nm to activate thermoplasticity,which becomes the criteria for thermal plastic forming of GO solids.By thermoplastic forming,the flat GO-composite films are forged to Gaussian curved shapes and imprinted to have surface relief patterns with size precision down to 360 nm.The plastic-formed structures maintain the structural integration with outstanding electrical(3.07×10^(5) S m^(−1))and thermal conductivity(745.65 W m^(−1) K^(−1))after removal of polymers.The thermoplastic strategy greatly extends the forming capability of GO materials and other layered materials and promises versatile structural designs for more broad applications.Zeshen Li Fan Guo Kai Pang Jiahao Lin Qiang Gao Yance Chen Dan Chang Ya Wang Senping Liu Yi Han Yingjun Liu Zhen Xu Chao Gao 2022Nano-Micro Letters2022,14,1:1
10Optimization strategy for plasmid DNAs containing multiple-epitopes of foot-and-mouth disease virus by cis-expression with IL-2显示文摘Zhang Hongying Sun Shuhan Guo Yingjun 2008Vaccine2008,26,:1
11Lithium-ion insertion kinetics of Na-doped Li2TiSiO5 as anode materials for lithium-ion batteries显示文摘Li2TiSiO5 receives much interest recently in lithium-ion battery anodes because of its attractive Liinsertion/extraction potential at 0.28 V(vs. Li+/Li), which bridges the potential gap between graphite and Li4 Ti5 O12. However, Li2TiSiO5 suffers from the low intrinsic electronic conductivity and sluggish Liion transfer kinetics. In this work, we report lithium-ion insertion kinetics of Li2TiSiO5 by Na doping,achieving high-rate capability. Rietveld refinement of X-ray diffraction results reveals that Na doping can enlarge the space of Li slabs, thus reducing the Li-ion transfer barrier and enhancing the Li-ion diffusion kinetics. According to first-principles calculations, Na doping can tune the band structure of Li2TiSiO5 from indirect to direct band, leading to improved electronic conductivity and electrochemical performance. In particular, the Na-doped Li2TiSiO5(Li1.95 Na(0.05)TiSiO5) electrode exhibits outstanding rate capability with a high capacity of 101 m A h g^(-1) at 5 A g^(-1) and superior cyclability with a reversible capacity of 137 m A h g^(-1) under 0.5 A g^(-1) over 150 cycles.Yueni Mei Yuyu Li Fuyun Li Yaqian Li Yingjun Jiang Xiwei Lan Songtao Guo Xianluo Hu 2020Journal of Materials Science & Technology2020,54,22:1
12Th2 polarization in target organs is involved in the alleviation of pathological damage mediated by transplanting granulocyte colony-stimulating factor-primed donor T cells显示文摘Acute graft-versus-host disease(a GVHD)is caused by allo-activated donor T cells infiltrating target organs.As a regulator of immune function,granulocyte colony-stimulating factor(G-CSF)has been demonstrated to relieve the a GVHD reaction.However,the role of G-CSF-primed donor Tcells in specific target organs is still unknown.In this study,we employed a classical MHC-mismatched transplantation mouse model(C57BL/6 into BALB/c)and found that recipient mice transplanted with GCSF-primed T cells exhibited prolonged survival compared with that of the PBS-treated group.This protective function against GVHD mediated by G-CSF-primed donor T cells was further confirmed by decreased clinical and pathological scores in this a GVHD mouse model,especially in the lung and gut.Moreover,we found that Tcells polarized towards Th2 cells and regulatory T cells were increased in specific target organs.In addition,G-CSF treatment inhibited inducible co-stimulator(ICOS)expression and increased the expression of tolerance-related genes in recipient mice.Our study provides new insight into the immune regulatory effects of G-CSF on T cell-mediated a GVHD,especially for its precise regulation in GVHD target organs.Yang Zhoui Leqing Cao Huidong Guo Yan Hong Ming Wang Ke Wang Xiaojun Huang Yingjun Chang 2021Science China(Life Sciences)2021,64,7:1
13Hepatitis B virus X protein (HBx)-related long noncoding RNA (lncRNA) down-regulated expression by HBx (Dreh) inhibits hepatocellular carcinoma metastasis by targeting the intermediate filament protein vimentin 显示文摘Huang Jinfeng Guo Yingjun Zhao Chenxi 2013Hepatolo- gy2013,57,5:1
14Transient inhibition of foot-and-mouth disease virus replication by siRNAs silen-cing VP1 protein coding region显示文摘Ke Lv Yingjun Guo Yiliang Zhang 2009Veterinary Science2009,86,:1
15Three-dimensional printing of graphene-based materials for energy storage and conversion显示文摘Developing high-performance energy storage and conversion(ESC)device relies on both the utilization of good constituent materials and rational design of assembly structure.Graphene-based materials,due to their superior properties like high electrical/thermal conductivity,large surface area,and unique optical properties,have been extensively reported for ESC applications.The emerging three-dimensional(3D)printing techniques,especially extrusion-based direct ink writing technique,have brought a revolutionary improvement in structure control accuracy and designing capability to graphene-based macro-assemblies,triggering a boost in functionalities and performances of graphene-based ESC devices.In these circumstances,understanding the very recent progress of 3Dprinted graphene materials and their design philosophy to bring new concepts for material designs and address the requirements for high-performance ESC devices are urgently important.In this review,we aim to outline recent developments in 3D printing of graphene-based materials and their applications in ESC applications.Basic requirements and theoretical analysis for preparation printable inks are discussed,as well as feasible GO ink preparation strategies in existing literatures.The representative explorations of 3D-printed graphenematerials in ESC applications like batteries,supercapacitors,solar steam generators,and electro-thermal conversion are also reviewed.This study attempts to provide a comprehensive overview of the progresses and limitations of present 3D printed graphenematerials,and seeks to enlighten the opportunities and orientations of future research in this field.Yanqiu Jiang Fan Guo Yingjun Liu Zhen Xu Chao Gao 2021SusMat2021,1,3:1
16MicroRNA-26a acts as a tumor suppressor inhibiting gallbladder cancercell proliferation by directly targeting HMGA2显示文摘Huading Zhou Weijie Guo Yingjun Zhao Yifei Wang Ruopeng Zha Jie Ding Linhui Liang Jun Hu Hao Shen Zongyou Chen Baobing Yin Baojin Ma 2014International Journal of Oncology2014,,6:1
17Segmented Au/PtCo heterojunction nanowires for efficient formic acid oxidation catalysis显示文摘Exploring a new strategy for the removal of adsorbed CO (CO^(*)) on a Pt surface at a low potential is the key to achieving enhanced catalysis for the formic acid oxidation reaction (FAOR);however, the development of such a strategy remains a significant challenge. Herein, we report a class of Au/PtCo heterojunction nanowires (HNWs) as efficient electrocatalysts for accelerating the FAOR. This heterojunction structure and the induced Co alloying effects can facilitate formic acid adsorption/activation on Pt with high CO tolerance, generating the FAOR pathway from dehydration to dehydrogenation. The optimized Au_(23)/Pt_(63)Co_(14) HNWs showed the highest specific and mass activities of 11.7 mA cm^(−2)Pt and 6.42 A mg^(−1)Pt reported to date, respectively, which are considerably higher than those of commercial Pt/C. DFT calculations confirmed that the electron-rich Au segment enhances the electronic activity of the PtCo NWs, which not only allows the construction of a highly efficient electron transfer channel for the FAOR but also suppresses CO formation.Yingjun Sun Bolong Huang Yingjie Li Yingnan Qin Ziqi Fu Mingzi Sun Lei Wang Shaojun Guo 2021Fundamental Research2021,1,4:1
18Characteristics of organic and elemental carbon in PM 2.5 samples in Shanghai, China显示文摘Yanli Feng Yingjun Chen Hui Guo Guorui Zhi Shengchun Xiong Jun Li Guoying Sheng Jiamo Fu 2009Atmospheric Research2009,,4:1
19Electrospinning of Neat Graphene Nanofbers显示文摘Macroscopic assembly of graphene sheets has renovated the preparation of neat carbonaceous fbers with integrating high performance and superior functionalities,beyond the pyrolysis of conventional polymeric precursors.To date,graphene microfbers by the liquid crystalline wet-spinning method have been established.However,how to reliably prepare continuous neat graphene nanofbers remains unknown.Here,we present the electrospinning of neat graphene nanofbers enabled by modulating colossally extensional fow state of graphene oxide liquid crystals.We use polymer with mega molecular weight as transient additives to realize the colossal extensional fow and electrospinning.The neat graphene nanofbers feature high electronic quality and crystallinity and exhibit high electrical conductivity of 2.02×10^(6) S/m that is to be comparable with single crystal graphite whisker.The electrospinning of graphene nanofbers was extended to prepare large-area fabric with high fexibility and superior specifc electrical/thermal conductivities.The electrospinning of graphene nanofbers opens the door to nanofbers of rich two-dimensional sheets and the neat graphene nanofbers may grow to be a new species after conventional carbonaceous nanofbers and whiskers in broad functional applications.Zhanpo Han Jiaqing Wang Senping Liu Qinghua Zhang Yingjun Liu Yeqiang Tan Shiyu Luo Fan Guo Jingyu Ma Peng Li Xin Ming Chao Gao Zhen Xu 2022Advanced Fiber Materials2022,4,2:1
20MRD-directed and risk-adapted individualized stratified treatment of AML显示文摘Measurable residual disease(MRD)has been widely recognized as a biomarker for deeply evaluating complete remission(CR),predicting relapse,guiding pre-emptive interventions,and serving as an endpoint surrogate for drug testing.However,despite the emergence of new technologies,there remains a lack of comprehensive understanding regarding the proper techniques,sample materials,and optimal time points for MRD assessment.In this review,we summarized the MRD methods,sample sources,and evaluation frequency according to the risk category of the European Leukemia Net(ELN)2022.Additionally,we emphasize the importance of properly utilizing and combining these technologies.We have also refined the flowchart outlining each time point for preemptive interventions and intervention paths.The evaluation of MRD in acute myeloid leukemia(AML)is sophisticated,clinically applicable,and technology-dependent,and necessitates standardized approaches and further research.Yijing Zhao Hanfei Guo Yingjun Chang 2023Chinese Journal of Cancer Research2023,35,5:0
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