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| 1 | Study on preparation and properties of CeO_2/epoxy resin composite coating on sintered NdFeB magnet显示文摘The CeO_2/epoxy resin composite coating was deposited on NdFeB substrate by cathode electrophoresis method for enhancing the anticorrosion and anti-wear performances. The morphologies and structures were characterized by a scanning electron microscope and an X-ray diffractometer. The micro hardness of the composite coating was evaluated by a microhardness tester. The corrosive behaviors of the coatings were studied by potentiodynamic polarization curve, electrochemical impedance spectroscopy and neutral salt spray tests. The concentration of CeO_2 nanoparticles(NPs) in the electrophoresis bath was optimized according to the coating structures and anticorrosion performances. The results show that CeO_2 NPs can enhance the microhardness of the composite coatings. Moreover, the nanoparticles disperse uniformly in the matrix when the concentration is lower than 30 g/L. The microhardness of CeO_2/epoxy resin(30 g/L) composite coating is about 63% higher than that of the blank epoxy resin coating. And the NSS time of the CeO_2/epoxy resin(30 g/L) composite coated sample can reach 1248 h.Meanwhile, the composite coatings possess no deteriorate influence on the magnetic properties of NdFeB substrates. The anticorrosion mechanisms of the composite coatings on the NdFeB substrate are deeply discussed. | Pengjie Zhang Minggang Zhu Wei Li Guangqing Xu Xiulian Huang Xiaofei Yi Jingwu Chen Yucheng Wu | 2018 | Journal of Rare Earths2018，36，5： | 8 |
| 2 | Downregulation of CD4+CD25+ regulatory T cells may underlie enhanced Th1 immunity caused by immunization with activated autologous T cells显示文摘规章的 T 房间(Treg ) 在免疫系统动态平衡起重要作用,并且可以被压制涉及反肿瘤免疫的 Th1 免疫反应也涉及肿瘤免疫忍耐。我们以前报导了有稀释激活的自体同源的 T 房间的那免疫导致提高的反肿瘤免疫并且在调整 Th1 回答 invivo 上面。然而,内在的分子的机制很好没被理解。这里,我们证明 Tregfunction 是显著地, down 在老鼠调整了稀释激活的自体同源的 T 房间的那收到的免疫。我们发现那 Foxp3 表情从使免疫的老鼠在 CD4+CD25+ T 房间减少了。而且,从使免疫的老鼠获得的 CD4+CD25+Foxp3+ Treg 从天真的老鼠与那些相比展出了减少的免疫力的抑制能力。进一步的分析证明使免疫的鼠标的浆液包含 anti-CD25 抗体(大约 30 ng/ml, p<0.01 对控制) 的高水平。与在 Treg 的 down 规定的 anti-CD25 反应的一个角色一致,到天真的鼠标的从使免疫的鼠标的浆液的采纳转移在接受者鼠标在 Treg 人口和功能导致了重要减少。在使免疫的老鼠被触发 anti-CD25 反应能被 CD25 在激活的自体同源的 T 房间为免疫使用了的 ConA 被导致到高水平的事实解释。我们的结果第一次证明有稀释激活的自体同源的 T 房间的那免疫唤起 anti-CD25 抗体生产,它导致阻碍的 CD4+CD25+Foxp3+Treg 扩大和功能体内。我们建议那阻抑的 Treg 功能多半在使免疫的老鼠贡献提高的 Th1 反应并且是位于 boostedanti 肿瘤免疫下面的机制的至少部分。 | Qi Cao Li Wang Fang Du Huiming Sheng Yan Zhang Juanjuan Wu Baihua Shen TianweiShen Jingwu Zhang Dangsheng Li Ningli Li | 2007 | Cell Research2007，17，7： | 5 |
| 3 | The Geochemical and Zircon Trace Elements Characteristics of A-type Granitoids in Boziguoer, Baicheng County, Xinjiang显示文摘The Boziguoer A-type granitoids in Baicheng County,Xinjiang,belong to the northern margin of the Tarim platform as well as the neighboring EW-oriented alkaline intrusive rocks.The rocks comprise an aegirine or arfvedsonite quartz alkali feldspar syenite,an aegirine or arfvedsonite alkali feldspar granite,and a biotite alkali feldspar syenite.The major rock-forming minerals are albite,K-feldspar,quartz,arfvedsonite,aegirine,and siderophyllite.The accessory minerals are mainly zircon,pyrochlore,thorite,fluorite,monazite,bastnaesite,xenotime,and astrophyllite.The chemical composition of the alkaline granitoids show that SiO2varies from 64.55%to 72.29%with a mean value of 67.32%,Na2O+K2O is high(9.85%–11.87%)with a mean of 11.14%,K2O is 2.39%–5.47%(mean=4.73%),the K2O/Na2O ratios are 0.31–0.96,Al2O3ranges from 12.58%to 15.44%,and total FeO T is between 2.35%and 5.65%.CaO,MgO,MnO,and TiO2are low.The REE content is high and the total SREE is(263–1219)ppm(mean=776 ppm),showing LREE enrichment and HREE depletion with strong negative Eu anomalies.In addition,the chondrite-normalized REE patterns of the alkaline granitoids belong to the'seagull'pattern of the right-type.The Zr content is(113–1246)ppm(mean=594 ppm),Zr+Nb+Ce+Y is between(478–2203)ppm with a mean of 1362 ppm.Furthermore,the alkaline granitoids have high HFSE(Ga,Nb,Ta,Zr,and Hf)content and low LILE(Ba,K,and Sr)content.The Nb/Ta ratio varies from 7.23 to 32.59(mean=16.59)and the Zr/Hf ratio is 16.69–58.04(mean=36.80).The zircons are depleted in LREE and enriched in HREE.The chondrite-normalized REE patterns of the zircons are of the'seagull'pattern of the left-inclined type with strong negative Eu anomaly and without a Ce anomaly.The Boziguoer A-type granitoids share similar features with A1-type granites.The average temperature of the granitic magma was estimated at 832–839°C.The Boziguoer A-type granitoids show crust–mantle mixing and may have formed in an anorogenic intraplate tectonic setting under high-temperature,anhydrous,and low oxygen fugacity conditions. | LIU Chunhua YIN Jingwu WU Cailai SHAO Xingkun YANG Haitao XU Haiming WANG Jun | 2013 | Acta Geologica Sinica(English Edition)2013，87，6： | 2 |
| 4 | Distribution,Seismic Characteristics and Controlling Factors of Carbonate Platforms on the Northwestern Margin of the South China Sea显示文摘Newly-acquired seismic data reveal widespread carbonate deposits covering a large part of the northwestern South China Sea margin.Three carbonate platforms are identified to have developed on the topographic highs inherited from tectonic deformation and volcanic accretion.Across the carbonate platforms,the Miocene strata are characterized by high-amplitude seismic reflections and distinct platform architecture that overlaps older strata.The Guangle and Xisha carbonate platforms grew on faulted blocks due to South China Sea continental rifting,while the Zhongjian carbonate platform developed on a structural high induced by early Miocene volcanism.During the late Miocene,partial drowning resulted in the inhibition of platform growth,eventual platform drowning and termination of most carbonate deposition.The drowning of the Guangle and Zhongjian carbonate platforms is shown by the supply of siliciclastic sediments during the late Miocene and seems to be closely linked to late Neogene volcanic activity,whilst the drowning of the Xisha carbonate platform is primarily related to relative eustatic changes.Our results imply that tectonic activity,volcanism and eustasy are the dominant controls on the evolution of carbonate platforms on the northwestern margin of the South China Sea. | LI Lin WANG Bin YANG Taotao YANG Zhili LI Li LU Yintao WANG Xuefeng WU Jingwu SUN Guozhong | 2021 | Acta Geologica Sinica(English Edition)2021，95，1： | 1 |
| 5 | Characteristics of the aqueous solu- tion of high DS:Carboxymethyl starch 显示文摘 | Zhang Jingwu Wu Dahua | 1992 | J Appl Polym Sci1992，46，2： | 1 |
| 6 | Identifying quasi-2D and 1D electrides in yttrium and scandium chlorides via geometrical identification显示文摘Developing and understanding electron-rich electrides offers a promising opportunity for a variety of electronic and catalytic applications.Using a geometrical identification strategy,here we identify a new class of electride material,yttrium/scandium chlorides Y(Sc)_(x)Cl_(y)(yx<2).Anionic electrons are found in the metal octahedral framework topology.The diverse electronic dimensionality of these electrides is quantified explicitly by quasi-two-dimensional(2D)electrides for[YCl]^(+)∙e−and[ScCl]^(+∙)e−and one-dimensional(1D)electrides for[Y_(2)Cl_(3)]^(+)∙e−,[Sc_(7)Cl_(10)]^(+)∙e−,and[Sc5Cl8]2+∙2e−with divalent metal elements(Sc^(2+):3d^(1) and Y^(2+):4d^(1)).The localized anionic electrons were confined within the inner-layer spaces,rather than inter-layer spaces that are observed in A_(2)B-type 2D electrides,e.g.Ca_(2)N.Moreover,when hydrogen atoms are introduced into the host structures to form YClH and Y2Cl3H,the generated phases transform to conventional ionic compounds but exhibited a surprising reduction of work function,arising from the increased Fermi level energy,contrary to the conventional electrides reported so far.Y_(2C)l_(3) was experimentally confirmed to be a semiconductor with a band gap of 1.14 eV.These results may help to promote the rational design and discovery of new electride materials for further technological applications. | Biao Wan Yangfan Lu Zewen Xiao Yoshinori Muraba Junghwan Kim Dajian Huang Lailei Wu Huiyang Gou Jingwu Zhang Faming Gao Ho-kwang Mao Hideo Hosono | 2018 | npj Computational Materials2018，，1： | 0 |
| 7 | A buried submarine canyon in the northwest South China Sea:architecture,development processes and implications for hydrocarbon exploration显示文摘High-resolution multichannel seismic data enables the discovery of a previous,undocumented submarine canyon(Huaguang Canyon)in the Qiongdongnan Basin,northwest South China Sea.The Huaguang Canyon with a NW orientation is 140 km in length,and 2.5 km to 5 km in width in its upper reach and 4.6 km to 9.5 km in width in its lower reach.The head of the Huaguang Canyon is close to the Xisha carbonate platform and its tail is adjacent to the central canyon.This buried submarine canyon is formed by gravity flows from the Xisha carbonate platform when the sea level dropped in the early stage of the late Miocene(~10.5 Ma).The internal architecture of the Huaguang Canyon is mainly characterized by high amplitude reflections,indicating that this ancient submarine canyon was filled with coarse-grained sediments.The sediment was principally scourced from the Xisha carbonate platform.In contrast to other buried large-scale submarine canyons(central canyon and Zhongjian Canyon)in the Qiongdongnan Basin,the Huaguang Canyon displays later formation time,smaller width and length,and single sediment supply.The coarse-grained deposits within Huaguang Canyon provide a good environment for reserving oil and gas,and the muddy fillings in Huaguang Canyon have been identified as regional caps.Therefore,Huaguang Canyon is potential area for future hydrocarbon exploration in the northwest South China Sea.Our results may contribute to a better understanding of the evolution of submarine canyons formed in carbonate environment. | Bin Wang Fuliang Lyu Shuang Li Jian Li Zhili Yang Li Li Xuefeng Wang Yintao Lu Taotao Yang Jingwu Wu Guozhong Sun Hongxia Ma Xiaoyong Xu | 2021 | Acta Oceanologica Sinica2021，40，3： | 0 |
| 8 | Corrosion resistance and mechanical properties of (Ho,Nd)FeB magnets显示文摘(Ho,Nd)FeB magnets with different Ho contents were prepared by Ho substitution for part of Nd during the casting process.Effects of Ho contents on the corrosion resistance and mechanical properties of(Ho,Nd)FeB magnets were analyzed by a highly accelerated aging tester,an electrochemical workstation,a microhardness tester,a bending tester,a scanning electron microscope and an X-ray diffractometer.Results show that the addition of Ho can change the main phase structure,optimize the distribution of rare-earth rich(RE-rich) phases in grain boundary,and improve the corrosion resistance and mechanical properties of NdFeB magnets.When the content of Ho increases from 0 to 21.0 wt%,the weight loss of magnets decreases from 2.672 to 0.933 mg/cm^(2),and the microhardness and bending strength increase from 528.74 HV and 374.92 MPa to 633.84 HV and 459.80 MPa,respectively. | Yujie Cao Youhao Liu Pengjie Zhang Guangqing Xu Jiaqin Liu Jingwu Chen Xiaofei Yi Yucheng Wu | 2021 | Journal of Rare Earths2021，39，11： | 0 |
| 9 | A facile process to optimize performance of regenerated Nd-Fe-B sintered magnets:Chemo-selective dissolution washing显示文摘In this work,the recycled Nd-Fe-B powders and regenerated Nd-Fe-B sintered magnets with low impurity content were successfully prepared from Nd-Fe-B magnet sludge via reduction diffusion(RD)method followed by a chemo-selective dissolution washing proc ess.The chemo-selective dissolution effect of various solution(deionized water,dilute acetic acid solution,NH_(4)Cl-methanol solution) was evaluated by impurity content and magnetic properties of the recycled Nd-Fe-B powder.The NH_(4)Cl-methanol solution can selectively remove impurities with minimal damage to the magnetic phase.Besides,the optimal NH_(4)Cl concentration and liquid-to-solid ratio were investigated.As a consequence,the contents of Ca,O,and H after optimal washing process are reduced to 0.07 wt%,0.31 wt% and 0.22 wt%,respectively.Hence,M_(3) Tis increased to 146.72 emu/g,which is 33% higher than that of the initial sludge.Then,the regenerated Nd-Fe-B sintered magnets with properties of B_(r)=11.66 kG,H_(cj)=16.49 kOe,and(BH)_(m)=31.78 MGOe were successfully prepared by mixing with 40 wt% Nd4Fe14B alloy powders.Compared with the corresponding regenerated magnets washed with deionized water,the remanence and coercivity are increased by 18% and 59%,respectively. | Haibo Xu Qingmei Lu Lichao Yu Liying Cong Haowen Tian Weiqiang Liu Youhao Liu Yunqiao Wang Jingwu Chen Xiaofei Yi Qiong Wu Ming Yue | 2023 | Journal of Rare Earths2023，41，12： | 0 |
| 10 | Recent advances in the application of MXenes for neural tissue engineering and regeneration显示文摘Transition metal carbides and nitrides(MXenes)are crystal nanomaterials with a number of surface functional groups such as fluorine,hydroxyl,and oxygen,which can be used as carriers for proteins and drugs.MXenes have excellent biocompatibility,electrical conductivity,surface hydrophilicity,mechanical properties and easy surface modification.However,at present,the stability of most MXenes needs to be improved,and more synthesis methods need to be explored.MXenes are good substrates for nerve cell regeneration and nerve reconstruction,which have broad application prospects in the repair of nervous system injury.Regarding the application of MXenes in neuroscience,mainly at the cellular level,the long-term in vivo biosafety and effects also need to be further explored.This review focuses on the progress of using MXenes in nerve regeneration over the last few years;discussing preparation of MXenes and their biocompatibility with different cells as well as the regulation by MXenes of nerve cell regeneration in two-dimensional and three-dimensional environments in vitro.MXenes have great potential in regulating the proliferation,differentiation,and maturation of nerve cells and in promoting regeneration and recovery after nerve injury.In addition,this review also presents the main challenges during optimization processes,such as the preparation of stable MXenes and long-term in vivo biosafety,and further discusses future directions in neural tissue engineering. | Menghui Liao Qingyue Cui Yangnan Hu Jiayue Xing Danqi Wu Shasha Zheng Yu Zhao Yafeng Yu Jingwu Sun Renjie Chai | 2024 | Neural Regeneration Research2024，19，2： | 0 |
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