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| 1 | Structure and coalbed methane occurrence in tectonically deformed coals显示文摘Research on structure of tectonically deformed coals(TDC) is a key issue in coal and gas outburst prevention and coalbed methane(CBM) exploitation.This paper presents a summary on the research progress in TDC's structural-genetic classification,tectonic strain influence on coal microstructure,coal porosity system,coal chemical structure and constituents,and their relationship with the excess coalbed methane.Previous studies suggested that tectonic deformation had significant influence on coal microstructure,coal super microstructure,and even chemical macromolecular structure.The main mechanisms of coal deformation are the tectonic stress degradation and polycondensation metamorphism(dynamical metamorphism).Besides,under different deformation mechanisms,the ultra-and micro-structure and chemical constituents of TDC presented distinct characteristics.Based on these achievements,we propose one possible evolutionary trend of TDC with different deformation mechanisms,and suggest that the coal and gas outburst in the TDC,especially in the mylonitic coals,may be not only controlled by geological structure,but also influenced by the tectonic stress degradation of ductile deformation.Therefore,further study on TDC should be focused on the controlling mechanism of deformation on structure and composition of coal,generation conditions and occurrence state of excess coalbed methane from deformation mechanism of coal. | HOU QuanLin LI HuiJun FAN JunJia JU YiWen WANG TianKai LI XiaoShi WU YuDong | 2012 | Science China Earth Sciences2012,55,11: | 49 |
| 2 | Micro-structural evolution and their effects on physical properties in different types of tectonically deformed coals显示文摘The macromolecular structure of tectonically deformed coals(TDC)may be determined by the deformation mechanisms of coal.Alterations of the macromolecular structure change the pore structure of TDC and thereby impact physical properties such as porosity and permeability.This study focuses on structure and properties of TDC from the Huaibei and Huainan coal mining areas of southern North China.Relationships between the macromolecular structure and the pore structure of TDC were analyzed using techniques such as X-ray diffraction,high-resolution transmission electron microcopy,and the low-temperature nitrogen adsorption.The results indicated that the directional stress condition can cause the arrangement of basic structural units(BSU)more serious and closer.And,the orientation is stronger in ductile deformed coal than in brittle deformed coal.Tectonic deformation directly influences the macromolecular structure of coal and consequently results in dynamic metamorphism.Because the size of BSU in brittle deformed coal increases more slowly than in ductile deformed coal,frictional heating and stress-chemistry of shearing areas might play a more important role,locally altering coal structure under stress,in brittle deformed coal.Strain energy is more significant in increasing the ductile deformation of coal.Furthermore,mesopores account for larger percentage of the nano-scale pore volume in brittle deformed coals,while mesopores volume in ductile deformed coal diminishes rapidly along with an increase in the proportion of micropores and sub-micropores.This research also approved that the deformations of macromolecular structures change nano-scale pore structures,which are very important for gas adsorption and pervasion space for gas.Therefore,the exploration and development potential of coal bed methane is promising for reservoirs that are subjected to a certain degree of brittle deformation(such as schistose structure coal,mortar structure coal and cataclastic structure coal).It also holds promise for TDC resulting from wrinkle structure coal of low ductile deformation and later superimposed by brittle deformation.Other kinds of TDC suffering from strong brittle-ductile and ductile deformation,such as scale structure coal and mylonitic structure coal,are difficult problems to resolve. | Yiwen Ju Kray Luxbacher Xiaoshi Li Guochang Wang Zhifeng Yan Mingming Wei Liye Yu | 2014 | International Journal of Coal Science & Technology2014,1,3: | 43 |
| 3 | New research progress on the ultrastructure of tectonically deformed coals显示文摘The structure of tectonically deformed coals shows some characteristics and regulations on the ultra-scale when influenced by different factors such as temperature,pressure and directional stress.Deformations of the macromolecular structure may induce changes in the nano-scale pore structure,which are very important for gas adsorption and pervasion.The geological impact of different mechanisms of deformation on different types of ultrastructure of tectonically deformed coals is not only of significance as a topic for scientific research, but also in studying environments of metamorphism-deformation at differing metamorphic stages.This research is also very important in studying the accumulation and occurrence conditions of coalbed methane gas,mechanisms of coal and gas outbursts,predictions of coalbed methane resources and dangers of coal and gas outbursts.This paper analyzes current research,within China and other countries, in the ultrastructure of tectonically deformed coals.The research includes(1) structural models of tectonically deformed coals;(2) the relationship between ultrastructure and stress;(3) the structure of tectonically deformed coals and its strain environment.These results are also based on our own experiments including vitirnite reflectance(R_(o,max)),X-ray diffraction(XRD) and nuclear magnetic resonance (NMR(CP/MAS + TOSS)).We discuss the important effects of the structure of tectonically deformed coals and their physical properties,and then point out some problems concerning the research progress of tectonically deformed coals. | Yiwen Ju,Xiaoshi Li Laboratory of Computational Geodynamics,College of Earth Science,Graduate University of Chinese Academy of Sciences,Beijing 100049,China | 2009 | Progress in Natural Science:Materials International2009,19,11: | 29 |
| 4 | Spectra response from macromolecular structure evolution of tectonically deformed coal of different deformation mechanisms显示文摘Coals with different deformation mechanisms(brittle deformation,brittle-ductile deformation,and ductile deformation) repre-sent different ways in macromolecular structure evolution based on the metamorphism.The evolution of coal structure could affect the occurrence condition of coalbed methane(CBM) because the nanopore structure affected by macromolecular struc-ture is the most important reservoir for CBM.This paper analyzes the evolutions and mechanisms of structure and functional group of tectonically deformed coals(TDCs) collected from Huainan-Huaibei coalfield using X-ray diffraction(XRD),Raman spectroscopy,and Fourier Transform Infrared(FTIR) spectroscopy methods.The results show that the macromolecular struc-ture evolutions of TDC are different from the primary structure coal as a result of the different metamorphic grade and defor-mation mechanisms.The different deformation mechanisms variously affect the process of functional group and polyconden-sation of macromolecular structure.Furthermore,the tectonic deformation leads to secondary structural defects and reduces the structure stability of TDC.The coupled evolution on stacking and extension caused by the changes of secondary structural de-fects results from different deformation mechanisms.We consider that the changes of chemical structure and secondary struc-tural defects are the primary reasons for the various structure evolutions of TDC compared with primary structure coal. | LI XiaoShi JU YiWen HOU QuanLin LIN Hong | 2012 | Science China Earth Sciences2012,55,8: | 18 |
| 5 | Polysaccharides from Tricholoma matsutake and Lentinus edodes enhance 5-fluorouracil-mediated H22 cell growth inhibition显示文摘OBJECTIVE: Few studies have investigated the effects produced by combinations of polysaccharides and chemotherapeutic drugs in cancer treatment.We hypothesized that a combinationo fpolysaccha rides(COP) from Lentinus edodes and Tricholoma matsutake would improve the efficacy of 5-fluorouracil(5-FU)-mediated inhibition of H22 cell growth.METHODS: Mice were injected H22 cells and then treated with either 5-FU, polysaccharides from Tricholoma matsutake(PTM), polysaccharides from Lentinus edodes(PL), PTM+PL, 5-FU+PTM, 5-FU+PL, or 5-FU+COP. The tumor weight and volume,and splenic CD4 + and CD8 + T cell frequencies,were determined. Additionally, splenic natural killer(NK) cell and cytotoxic Tlymphocyte (CTL) activities were assessed and the serum levels of tumor necrosis factor-α(TNF-α),Interleukin-2(IL-2),and Interferon-γ (IFN-γ) were measured. 5-FU, PL, PTM, PTM+PL, 5-FU+PL, and 5-FU+PTM groups, mice treated with 5-FU+COP showed:(a)significantly reduced tumor weight and volume(P<0.05);(b) significantly higher serum levels ofTNF-α,IL-2, and IFN-γ(P<0.05);(c) significantly increased CD4+andCD8+Tcell frequencies in the spleen(P<0.05); and(d) significantly increased splenic NK cell and CTL activities(P<0.05). The tumor weight and volume in mice treated with 5-FU+PL or 5-FU+PTM were significantly reduced compared with mice treated with 5-FU alone(P<0.05). Serum levels of TNF-α, IL-2, and IFN-γ, frequencies of CD4 + and CD8+T cells in the spleen, and splenic NK and CTL activities were also significantly increased in mice treated with 5-FU+PL or 5-FU+PTM compared with mice treated with 5-FU alone (P<0.05).CONCLUSION: Polysaccharides from Lentinus edodes and Tricholoma matsutake could enhance the efficacy of 5-FU-mediated H22 cell growth inhibition. | Ming Ren Lingyan Ye Xiaoshi Hao Zhixing Ren Shuping Ren Kun Xu Juan Li | 2014 | Journal of Traditional Chinese Medicine2014,34,3: | 15 |
| 6 | Defined tumor antigen-specific T cells potentiate personalized TCR-T cell therapy and prediction of immunotherapy response显示文摘Personalized immunotherapy targeting tumor-specific antigens(TSAs)could generate efficient and safe antitumor immune response without damaging normal tissues.Although neoantigen vaccines have shown therapeutic effect in clinic trials,precise prediction of neoantigens from tumor mutations is still challenging.The host antitumor immune response selects and activates T cells recognizing tumor antigens.Hence,T cells engineered with T-cell receptors(TCRs)from these naturally occurring tumor antigen-specific T(Tas)cells in a patient will target personal TSAs in his/her tumor.To establish such a personalized TCR-T cell therapy,we comprehensively characterized T cells in tumor and its adjacent tissues by single-cell mRNA sequencing(scRNA-seq),TCR sequencing(TCR-seq)and in vitro neoantigen stimulation.Compared to bystander T cells circulating among tissues,Tas cells were characterized by tumor enrichment,tumor-specific clonal expansion and neoantigen specificity.We found that CXCL13 is a unique marker for both CD4^(+)and CD8^(+)Tas cells.Importantly,TCR-T cells expressing TCRs from Tas cells showed significant therapeutic effects on autologous patient-derived xenograft(PDX)tumors.Intratumoral Tas cell levels measured by CXCL13 expression precisely predicted the response to immune checkpoint blockade,indicating a critical role of Tas cells in the antitumor immunity.We further identified CD200 and ENTPD1 as surface markers for CD4^(^(+))and CD8^(^(+))Tas cells respectively,which enabled the isolation of Tas cells from tumor by Fluorescence Activating Cell Sorter(FACS)sorting.Overall,our results suggest that TCR-T cells engineered with Tas TCRs are a promising agent for personalized immunotherapy,and intratumoral Tas cell levels determine the response to immunotherapy. | Jingjing He Xinxin Xiong Han Yang Dandan Li Xuefei Liu Shuo Li Shuangye Liao Siyu Chen Xizhi Wen Kuai Yu Lingyi Fu Xingjun Dong Kaiyu Zhu Xiaojun Xia Tiebang Kang Chaochao Bian Xiang Li Haiping Liu Peirong Ding Xiaoshi Zhang Zhenjiang Liu Wende Li Zhixiang Zuo Penghui Zhou | 2022 | Cell Research2022,32,6: | 10 |
| 7 | A review of historical reconstruction methods of land use/land cover显示文摘理解长期的人环境的相互作用要求过去的陆地使用和陆地封面变化的历史的重建。大多数重建从历史的来源首先基于一致地可得到、相对标准化的信息。基于可得到的数据来源和回顾的研究,在我们考察的这篇论文数字重建和分析的途径和方法他们在下列方面的优点和可能的限制:(1 ) 历史的文件关于过去的陆地使用包含质或半量的信息,它通常也包括档案的文件的陆地封面数据,而是准备是很费时间的。(2 ) 历史的地图和图画为视觉、空间的量的陆地封面提供信息。(3 ) 自然档案为经过植被重建作为一个方法有重要优点并且当历史的记录失踪或缺乏时,特别有它的唯一的可能性,但是它有重建某些陆地封面类型的大限制。(4 ) 历史的重建模型逐渐地从实验模型被开发了到机械学的。方法做不仅重建在历史的时期的陆地使用 / 盖住的数量,但是它也复制空间分发。然而仍然有有高空间的分辨率的很少历史的陆地封面数据集。(5 ) 重建方法能从多重观点基于多重来源的数据和多学科的研究造历史的陆地封面,补充失踪的数据,验证重建结果并且因此改进重建精确性。然而,有挑战,仍然在探索阶段做方法。这个方法能是为历史的陆地封面重建的一个长期的发展目标。研究人员们应该集中于由开发新模型与高空间的分辨率重建历史的陆地封面数据集以便学习结果能有效地在气候、生态的效果的模拟被使用。 | YANG Yuanyuan ZHANG Shuwen YANG Jiuchun CHANG Liping BU Kun XING Xiaoshi | 2014 | Journal of Geographical Sciences2014,24,4: | 9 |
| 8 | Response of Macromolecular Structure to Deformation in Tectonically Deformed Coal显示文摘有不同 deformational 机制和不同 deformational 紧张的构造地使变形的煤(TDC ) 的结构的进化通过 31 上的分析不同变形等级取样的 X 光检查衍射(XRD ) 深入地被调查(Ro,最大:0.7%3.1%) 从 Huaibei 煤田镇定。结果显示在有变态和变丑增加的可锻、易碎的 deformational 煤之间有不同进化特征。随变态的增加,在一方面,原子飞机间距( d002 )在步速度正在减少,叠 BSU 层( Lc )起初正在增加然后减少,但是 BSU 层( La )和 La/Lc 的比率的延期开始正在减少然后增加。为易碎的 deformational 煤,当 deformational 紧张正在增加时,在另一方面, d002 开始正在增加然后减少,它在降低中间或高中间的变态等级下面引起 Lc 和 La 的变化的倒置。在可锻的 deformational 煤,相反, d002 开始减少了然后增加,并且 Lc 的价值随 deformational 的增加减少了紧张。但是 La 的价值在降低中间的变态等级下面增加了并且起初增加了然后在高中间的变态等级下面减少了。我们断定 TDC macromolecular 结构的降级和 polycondensation 能显然在可锻的 deformational 过程期间被影响,因为统一脱臼的增加和累积也许把压力转变成紧张精力。同时,易碎的变丑能把压力转变成部分热能,并且也支持变态和降级。变丑比对可锻、易碎的 deformational 煤的微分进化的变态更重要,这能被结束。 | LI Xiaoshi JU Yiwen HOU Quanlin FAN Junjia | 2013 | Acta Geologica Sinica(English Edition)2013,87,1: | 8 |
| 9 | Effects of hot extrusion on microstructure and mechanical properties of Mg matrix composite reinforced with deformable TC4 particles显示文摘Mg matrix composites were often reinforced by non-deformable ceramic particles.In this paper,a novel Mg matrix composite reinforced with deformable TC4(Ti-6Al-4 V)particles was fabricated and then extruded.The evolutions of microstructure and mechanical properties of the composite during hot extrusion were investigated.Hoi extrusion refined giains and eliminated the segregation of TC4 particles.TC4 particles,as deformable particles,stimulated the nucleation of dynamic recrystallization during extrusion.However,since the deformation of TC4 particles partly released the stress concentrations around them,the recrystallized grains are just slightly smaller around TC4 particles than that away from them,which is evidently different from the case in Mg matrix composites reinforced by non-deformable ceramic particles.Compared with AZ91 matrix composites reinforced by SiC particles,the present composite possesses the superior comprehensive mechanical properties,which are attributed to not only the strong interfacial bonds between TC4p and matrix but also the deformability of TC4 particles. | Xiaojun Wang Xiaoming Wang Xiaoshi Hu Kun Wu | 2020 | Journal of Magnesium and Alloys2020,8,2: | 7 |
| 10 | Targeted and personalized therapy for cancer:Theory and practice in China显示文摘Molecular targeted therapy (MTT), using chemicals of low molecular weight, monoclonal antibodies, and/or polypep- tides to interfere with specific signaling pathways in cancer cells, causes inhibition of tumor progression. Clinical evi- dence has demonstrated that MTT has promising potential in not only killing tumors but also inducing tumor cells to differentiate into normal cells, leading to cure of the patients. Furthermore, MTT leads to potent inhibition of oncogenic signals. The delay of tumor progression makes the patients 'survive with tumor'. Thus, in the future it is possible that cancer becomes a chronic disease much like diabetes and hypertension. This article reviews the theory on molecular targeted therapy, its features and future direction, and con- tributions in the field from Chinese scientists. | LIU Qiang ZHANG XiaoShi Zeng YiXin | 2011 | Science China(Life Sciences)2011,54,12: | 6 |
| 11 | High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly显示文摘Electrocaloric effect(ECE)is promising in realizing solid-state cooling as an alternative to the conventional refrigeration with environmentally harmful coolant and low efficiency.High ECE in lead-free ferroelectric ceramics is highly desirable for the EC cooling.In this work,different from the researches that tune the ECE by conventional compositional design or external stress engineering,we fabricated the(1-x)BaTiO_(3)-xNaNbO_(3)(BTO-xNN)lead-free ceramics with a core-shell grain structure arising from the inhomogeneous stoichiometry of element distribution,leading to the internal compressing stress in the grains.It is interesting that the phase transition behavior,including the phase transition temperature and the diffusion property,is regulated by the core-shell grain structure induced internal stress,which can be capitalized on for the favorable ECE.Cooperated with 0.02 NN,a high ECE,e.g.adiabatic temperature change(ΔT)of 3.6 K and isothermal entropy change(ΔS)of 4.5 J kg^(-1) K^(-1),is attained in the BTO ceramic.As the internal stress further increases with more NN,the BTO-0.06NN exhibits an extremely stable ECE with a variety rate below ±4% in a wide temperature range from 300 K to 360 K.This work provides a novel approach to explore pronounced ECE in lead-free ferroelectrics for eco-friendly refrigeration. | Chao Zhang Quanpei Du Wenru Li Dong Su Meng Shen Xiaoshi Qian Bing Li Haibo Zhang Shenglin Jiang Guangzu Zhang | 2020 | Journal of Materiomics2020,6,3: | 4 |
| 12 | Achievement of promising cryogenic magnetocaloric performances in La_(1-x)Pr_(x)Fe_(12)B_(6)compounds显示文摘The magnetic refrigeration(MR)utilizing magnetocaloric effect(MCE)has been recognized as an environmentally friendly and energy efficiency technology.Here we presented the magnetic properties and MCE in Pr-doped La_(1-x)Pr_(x)Fe_(12)B_(6)(x=0.05-0.2)itinerant-electron metamagnetic(IEM)compounds.A small amount of Pr doping La site can greatly improve the peak values in the magnetic entropy change S_(M)(T)curves,especially under relatively low magnetic field changes(ΔH).Additionally,the peak temperature increases gradually and the magnetic hysteresis reduces gradually with increasing x.The observed MCE in present La_(1-x)Pr_(x)Fe_(12)B_(6)compounds is related to its field-induced first-ordered IEM transition.The peak values ofΔS_(M)for La_(1-x)Pr_(x)Fe_(12)B_(6)compounds reach 13.4,15.4,12.5 and 13.0 J/(kg K)at T_(C)~58,68,72and 89 K for x=0.05,0.10,0.15 and 0.2 under H of 0-7 T,respectively.The corresponding relative cooling power values are 462.3,480.7,372.4 and 375.7 J/kg.The present La_(1-x)Pr_(x)Fe_(12)B_(6)compounds could be good candidates for active MR application if the magnetic and thermal hysteresis can be further reduced.The present work indicates that the La Fe_(12)B_(6)-based material system could also exhibit promising magnetocaloric performances. | Zhipan Ma Xiaoshi Dong Zhenqian Zhang Lingwei Li | 2021 | Journal of Materials Science & Technology2021,,33: | 4 |
| 13 | The effect of different deformation mechanisms on the chemical structure of anthracite coals显示文摘To study the effect of different deformation mechanisms on the chemical structure of anthracite coals and further understand the correlation between changed chemical structures and coal and gas outburst, ten groups of sub-high-temperature and sub-high-pressure deformation experiments were performed. All samples maintained primary structure, which were collected from the Qudi Mine in the southern Qinshui Basin of China. The samples were analyzed by ultimate analysis, Vitrinite Reflection(VR), Fourier Transform Infrared spectroscopy(FTIR), and Raman spectroscopy both before and after deformation experiments for contrasting. The results showed that the VR values of all samples after experiments were significantly higher than before experiments, which suggested that the metamorphism degree of anthracite coals was increased by deformation. The results also indicated that both temperature and strain rate had significant effects on the chemical structure of anthracite coals. At a high strain rate of 4×10?5 s?1, the deformation of the samples was mainly brittle in which the mechanical energy was transformed mainly into frictional energy. In this situation, all samples developed several distinct fractured surfaces and the change of chemical structures was not obvious. On the contrary, with the decrease of the strain rates, the ductile deformation was dominated and the mechanical energy was mainly transformed into strain energy, resulting in the accumulation of deformation energy confessed by increasing quantity of dislocation and creep in the coal's interior nucleus. The absorption in the aromatic ring groups increased; otherwise the absorption in the aliphatic structures and ether oxygen groups decreased rapidly. During these experiments, CO was collected from two experimental samples. The number of aromatic rings and the structure defects within the two generated gas samples increased and the degree of molecular structure orders decreased. | XU RongTing LI HuiJun HOU QuanLin LI XiaoShi YU LiYe | 2015 | Science China Earth Sciences2015,58,4: | 4 |
| 14 | Detection of Lactobacillus acidophilus in Fermented Material by Real-time Fluorescent Quantitative PCR显示文摘The species distinctive PCR primer of Lactobacillus acidophilus( L. acidophilus) was designed according to 16 S rRNA gene sequences of common Lactobacillus species in fermented material. Bacterial genome DNA of separated L. acidophilus in fermented sample was taken as template,and L. acidophilus in fermented material was conducted the quantitative determination by real-time quantitative PCR( RT-PCR). Analysis on RT-PCR results shown that contents of L. acidophilus in the test sample reached 1. 5 billion CFU / g. Test results shown that contents of L. acidophilus in fermented material could be detected accurately by the established RT-PCR method in the test,indicating that the established RT-PCR method could be applied to the detection of L. acidophilus in fermented material. | Guo Zihao Fang Hua Xia Zhisheng Zhu Xiaoshi Sun Zhongchao Yu Hanli Xia Jiaji | 2016 | Animal Husbandry and Feed Science2016,8,1: | 4 |
| 15 | Prognostic potential of an immune score based on the density of CD8+ T cells, CD20+ B cells, and CD33+/p-STAT1+ double-positive cells and HMGB1 expression within cancer nests in stage ⅢA gastric cancer patients显示文摘Objective: There is heterogeneity in the prognosis of gastric cancers staged according to the tumornodes-metastasis(TNM) system.This study evaluated the prognostic potential of an immune score system to supplement the TNM staging system.Methods: An immunohistochemical analysis was conducted to assess the density of T cells, B cells, and myeloid-derived suppressor cells(MDSCs) in cancer tissues from 100 stage ⅢA gastric cancer patients; the expression of the high-mobility group protein B1(HMGB1) was also evaluated in cancer cells.The relationship between the overall survival(OS), disease-free survival(DFS), and immunological parameters was analyzed.Results: An immune score system was compiled based on the prognostic role of the density of T cells, B cells, MDSCs, and the expression of HMGB1 in cancer tissues.The median 5-year survival of this group of patient was 32%.However, the 5-year survival rates of 80.0%, 51.7%, 0%, 5.8%, and 0% varied among the patients with an immune score of 4 to those with an immune score of 0 based on the immune score system, respectively.Similarly, differences in DFS rates were observed among the immune score subgroups.Conclusions: An immune score system could effectively identify the prognostic heterogeneity within stage ⅢA gastric cancer patients, implying that this immune score system may potentially supplement the TNM staging system, and help in identifying a more homogeneous group of patients who on the basis of prognosis can undergo adjuvant therapy. | Jun Dong Jiao Li Shiming Liu Xingyu Feng Shi Chen Zhiwei Zhou Yingbo Chen Xiaoshi Zhang | 2016 | Chinese Journal of Cancer Research2016,28,5: | 3 |
| 16 | Development and strengthening mechanisms of a hybrid CNTs@SiCp/Mg-6Zn composite fabricated by a novel method显示文摘The hybrid addition of CNTs was used to improve both the strengths and ductility of SiCp reinforced Mg matrix composites.A novel method was developed to simultaneously disperse SiCp and CNTs in Mg melt.Firstly,new CNTs@SiCp hybrid reinforcements were synthesized by CVD.Thus,CNTs were well pre-dispersed on the SiCp surfaces before they were added to Mg melt.Therefore,the following semisolid stirring and ultrasonic vibration dispersed the new hybrid reinforcements well in Mg-6Zn melt.The hybrid composite exhibits some unique features in microstructures.Although the distribution of SiCp was very uniform in the Mg-6Zn matrix,most CNTs distributed along the strips in the state of micro-clusters,in which CNTs were bonded very well with Mg matrix.Most of the CNTs kept their structure integrity during fabrication process.All these factors ensure that the hybrid composite have much higher strength and elongation than the mono SiC/Mg-6Zn composites.The dominant strengthening mechanism is the load transfer effect of CNTs.Apart from grain refinement,the CNTs toughen the composites by impeding the microcrack propagation inside the material.Thus,the hybrid CNTs@SiCp successfully realizes the reinforcing advantage of“1+1>2”. | Chao Ding Xiaoshi Hu Hailong Shi Weimin Gan Kun Wu Xiaojun Wang | 2021 | Journal of Magnesium and Alloys2021,9,4: | 3 |
| 17 | Microstructure and mechanical properties of bio-inspired Cf/Ti/Mg laminated composites显示文摘Inspired by an old fish skin structure,the Cf/Ti/Mg laminated composites were fabricated by squeeze casting technology.No porous or voids were found in final composite,and carbon fiber was uniformly dispersed in Mg matrix.Furthermore,the addition of net-shaped Ti adsorbed Al element and facilitated the nucleation of Mg_(17)Al_(12)nearby Ti.The reaction product Al_(4)C_(3)was found at the Cf and AZ91 interface.Mechanical tests indicate that the introduction of Ti could greatly improve the toughness of Cf/Mg composites. | Xiaoshi Hu Zhenming Sun Chunlei Zhang Xiaojun Wang Kun Wu | 2018 | Journal of Magnesium and Alloys2018,6,2: | 3 |
| 18 | Improving the Young’s modulus of Mg via alloying and compositing–A short review显示文摘Lightweight,high-modulus structural materials are highly desired in many applications like aerospace,automobile and biomedical instruments.As the lightest metallic structural material,magnesium(Mg)has great potential but is limited by its low intrinsic Young’s modulus.This paper reviews the investigations on high-modulus Mg-based materials during the last decades.The nature of elastic modulus is introduced,and typical high-modulus Mg alloys and Mg matrix composites are reviewed.Specifically,Mg alloys enhance Young’s modulus of pure Mg mainly by introducing suitable alloying elements to promote the precipitation of high-modulus second phases in the alloy system.Differently,Mg matrix composites improve Young’s modulus by incorporating high-modulus particles,whiskers and fibers into the Mg matrix.The modulus strengthening effectiveness brought by the two approaches is compared,and Mg matrix composites stand out as a more promising solution.In addition,two well-accepted modulus prediction models(Halpin-Tsai and Rule of mixtures(ROM))for different Mg matrix composites are reviewed.The effects of reinforcement type,size,volume fraction and interfacial bonding condition on the modulus of Mg matrix composites are discussed.Finally,the existing challenges and development trends of high-modulus Mg-based materials are proposed and prospected. | Hailong Shi Chao Xu Xiaoshi Hu Weimin Gan Kun Wu Xiaojun Wang | 2022 | Journal of Magnesium and Alloys2022,10,8: | 3 |
| 19 | One-Pot Synthesis of Co-Based Coordination Polymer Nanowire for Li-Ion Batteries with Great Capacity and Stable Cycling Stability显示文摘Nanowire coordination polymer cobalt–terephthalonitrile(Co-BDCN) was successfully synthesized using a simple solvothermal method and applied as anode material for lithium-ion batteries(LIBs). A reversible capacity of 1132 mAh g^(-1) was retained after 100 cycles at a rate of 100 mAg^(-1), which should be one of the best LIBs performances among metal organic frameworks and coordination polymers-based anode materials at such a rate. On the basis of the comprehensive structural and morphology characterizations including fourier transform infrared spectroscopy,~1 H NMR,^(13)C NMR, and scanning electron microscopy, we demonstrated that the great electrochemical performance of the as-synthesized Co-BDCN coordination polymer can be attributed to the synergistic effect of metal centers and organic ligands, as well as the stability of the nanowire morphology during cycling. | Peng Wang Xiaobing Lou Chao Li Xiaoshi Hu Qi Yang Bingwen Hu | 2018 | Nano-Micro Letters2018,10,2: | 3 |
| 20 | Recent diagnostic developments at the 100 kJ-level laser facility in China显示文摘A 100 kJ-level laser facility has been designed to study inertial confinement fusion physics in China.This facility incorporates various diagnostic techniques,including optical,x-ray imaging,x-ray spectrum,and fusion product diagnostics,as well as general diagnostics assistance systems and central control and data acquisition systems.This paper describes recent developments in diagnostics at the facility. | Feng Wang Shaoen Jiang Yongkun Ding Shenye Liu Jiamin Yang Sanwei Li Tianxuan Huang Zhurong Cao Zhenghua Yang Xin Hu Wenyong Miao Jiyan Zhang Zhebin Wang Guohong Yang Rongqing Yi Qi Tang Longyu Kuang Zhichao Li Dong Yang Yulong Li Xiaoshi Peng Kuan Ren Baohan Zhang | 2020 | Matter and Radiation at Extremes2020,5,3: | 2 |